Transcript Blueprint Reading for the Machine Trades, Sixth Edition Unit 2

Blueprint Reading for the
Machine Trades, Sixth Edition
Unit 2: Dimensioning Systems
Russ Schultz and Larry Smith
PowerPoint presentation created by
LaVonne Vichlach
1
Dimensioning Systems
 Four different systems of dimensioning
used in U.S. and Canada




Fractional inch
Decimal inch
Dual dimensioning
SI Metric
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
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Dimensioning Systems
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
3
Dimensioning Systems
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
4
Dimensioning Systems
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
5
Dimensioning Systems
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
6
Dimensioning Systems
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
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 Fractional type steel rules divided into
units of:
 1/16
 1/32
 1/64
 Major graduation accentuated by longer
lines
 Some have small numbers printed
adjacent to lines
Fractional Dimensioning



Always reduce a fraction to its lowest
terms
If numerator is even number-it can be
reduced
Begin your count from a major
graduation close to the reading
Schultz and Smith: Blueprint
Reading for the Machine
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Fractional Dimensioning
Schultz and Smith: Blueprint
Reading for the Machine
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Scale Reading Quiz 1
Record the
scale length
identified by
1
1. 3/4
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Reading for the Machine
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Scale Reading Quiz 1
Record the
scale length
identified by
2
2. 1 5/8
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Reading for the Machine
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Scale Reading Quiz 1
Record the
scale length
identified by
3
3. 2 7/16
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Reading for the Machine
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Scale Reading Quiz 1
Record the
scale length
identified by
4
4. 3 3/16
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Reading for the Machine
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Scale Reading Quiz 1
Record the
scale length
identified by
5
5. 3 15/16
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Reading for the Machine
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Scale Reading Quiz 1
Record the
scale length
identified by
6
6. 13/16
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Reading for the Machine
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Scale Reading Quiz 1
Record the
scale length
identified by
7
7. 1 ¾
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Reading for the Machine
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Scale Reading Quiz 1
Record the
scale length
identified by
8
8. 2 11/16
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Reading for the Machine
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Scale Reading Quiz 1
Record the
scale length
identified by
9
9. 3 17/32
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Reading for the Machine
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Scale Reading Quiz 1
Record the
scale length
identified by
10
10. 3 31/32
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Reading for the Machine
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Decimal Scales




Subdivided into units of 1/10, 1/20, 1/50, or
1/100 in.
1/50 is sufficient for most applications
With 50 increments to an inch each increment
=.02 in.
Reading between increments-capable of
determining closest .01 inch measurement
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Reading for the Machine
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Decimal Scales




Closer measurements require using
micrometer, vernier or dial calipers
Major graduations are accented by longer
lines-usually every 1/10 in.
Popular scales graduation style has .04 and
.06 increments slightly longer than .02 and
.08
Reads faster, more recognizable
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Reading for the Machine
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Decimal Scales
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
23
Decimal Scales
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
24
Decimal Scales
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
25
Decimal Scales
Schultz and Smith: Blueprint
Reading for the Machine
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Scale Reading Quiz 2
Record the
scale length
identified
by... 1
1. .80
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Reading for the Machine
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Scale Reading Quiz 2
Record the
scale length
identified
by… 2
2. 1.60
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Reading for the Machine
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Scale Reading Quiz 2
Record the
scale length
identified
by… 3
3. 2.50
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Reading for the Machine
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Scale Reading Quiz 2
Record the
scale length
identified
by… 4
4. 3.32
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Reading for the Machine
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Scale Reading Quiz 2
Record the
scale length
identified
by… 5
5. 3.86
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Reading for the Machine
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Decimal Dimensioning


Drawing may be dimensioned using
two- or three-place decimals
Amount of tolerance is determined
by number of decimal places
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Reading for the Machine
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Decimal Dimensioning



.50 may have tolerance of ± .01
.500 may have tolerance of ± .001
.5000 may have tolerance of ±.0001
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Reading for the Machine
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Decimal Dimensioning


Converting fractions to decimalsresults in too many decimal
places
Need to round off those
numbers to desired places
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Reading for the Machine
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Decimal Dimensioning
 Rule #1-When the figure following
the last digit to be retained is
greater than 5---increase the last
number by one
 .016 becomes .02
 .047 becomes .05
 .078 becomes .08
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Reading for the Machine
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Decimal Dimensioning
 Rule #2-When the figure following
the last digit to be retained is less
than 5---retain the last number
 .031 becomes .03
 .062 becomes .06
 .093 becomes .09
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Reading for the Machine
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Decimal Dimensioning
 Rule #3-When the figure following
the last digit to be retained is
exactly 5 and the figure to be
retained is odd---increase the last
number by one
 .375 becomes .38
 .875 becomes .88
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Reading for the Machine
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Decimal Dimensioning
 Rule #4-When the figure following
the last digit to be retained is
exactly 5 and the figure to be
retained is even---retain the last
number
 .125 becomes .12
 .625 becomes .62
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Reading for the Machine
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Decimal Dimensioning
 Rule #3 and #4 are different
 Established to even numbers as often
as possible
 Even numbers are preferred
 Decimal numbers divided by two-e.g.diameter/2 = radius-----results will
contain same number of decimal places
Schultz and Smith: Blueprint
Reading for the Machine
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Decimal Dimensioning
Decimal Rounding Quiz
1.
2.
3.
4.
5.
6.
7.
.109
.125
.156
.234
.438
.547
.562
=
=
=
=
=
=
=
.11
.12
.16
.23
.44
.55
.56
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Reading for the Machine
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Decimal Rounding Quiz
8.
9.
10.
11.
12.
13.
14.
.641 = .64
.797 = .80
.875 = .88
1.056 = 1.06
1.672 = 1.67
2.205 = 2.20
2.454 = 2.45
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Reading for the Machine
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Decimal Rounding Quiz
15. 3.335 = 3.34
16.
17.
18.
19.
20.
3.767 =
5.555 =
6.665 =
7.045 =
8.885 =
3.77
5.56
6.66
7.04
8.88
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Reading for the Machine
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Metric Dimensioning




Metric increment of measure is
millimeter
Will be noted if different
Dual dimensioning system-SI Metricused in U.S. and Canada
Convert a metric dimension to inches by
multiplying it by .03937
Schultz and Smith: Blueprint
Reading for the Machine
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Metric Dimensioning


Conversion charts are available to
provide converted dimensions
Metric scales are available and can
be used-eliminating need for
conversion
Schultz and Smith: Blueprint
Reading for the Machine
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Metric Dimensioning
 Metric scales
 Have graduations every millimeter of halfmillimeter
 Designated “mm” or “1/2 mm”
 Every fifth millimeter is accentuated by a
longer line
 Every tenth millimeter is identified by a
number
Schultz and Smith: Blueprint
Reading for the Machine
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Metric Dimensioning
Schultz and Smith: Blueprint
Reading for the Machine
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Scale Reading Quiz 3
Record the scale
length identified by 1
1. 20 mm
Schultz and Smith: Blueprint
Reading for the Machine
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Scale Reading Quiz 3
Record the scale
2
length identified by
2. 35 mm
Schultz and Smith: Blueprint
Reading for the Machine
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Scale Reading Quiz 3
Record the scale
3
length identified by
3. 51 mm
Schultz and Smith: Blueprint
Reading for the Machine
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Scale Reading Quiz 3
4. 77.5 mm
Record the
scale length
identified by 4
Schultz and Smith: Blueprint
Reading for the Machine
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Scale Reading Quiz 3
5. 93.5 mm
Record the
scale length
identified by 5
Schultz and Smith: Blueprint
Reading for the Machine
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Blueprints
 Blueprinting-Term can be interpreted as
 Drawing
 Picture
 Contains information




Required sizes
Tolerances
Essential requirements
Notes and instructions
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Reading for the Machine
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From the information on this drawing,
could you make this part?
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Reading for the Machine
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Could you make this one?
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Reading for the Machine
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Engineering Drawings



Original drawing made by drafter or
engineer
Prints are referred to as engineering
drawings
Also referred to as blueprints (more
common term)
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Reading for the Machine
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Engineering Drawings
 Standardized drawings





“A” size is 8 ½ x 11 inches
“B” size is 11 x 17 inches
“C” size is 17 x 22 inches
“D” size is 22 x 34 inches
“E” size is 34 x 44 inches
Schultz and Smith: Blueprint
Reading for the Machine
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Engineering Drawings
Schultz and Smith: Blueprint
Reading for the Machine
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Engineering Drawings
1. What are the basic
dimensions of the Asize drawing?
2. If C-size is twice as
large as B-size,
how much larger is
it than A-size?
8 ½ X 11
4X
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Engineering Drawings
3. Will an E-size print
fold to fit in the
same envelope with
an A-size print?
4. What metric size is
twice as large as the
A3 size?
YES
A2
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Reading for the Machine
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Engineering Drawings
5. Are the A4 metric size and
the A inch size exactly the
same? (Use 1in = 25.4
mm or 1mm = .03937 in.
to compare)
NO
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Reading for the Machine
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Title Blocks
 Each drawing contains a Title Block
 Drawing number is most prominent
lettering in title block
 Lettered larger to stand out
 Scale determines the size of the
object drafted
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Reading for the Machine
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Title Blocks
 Mechanical drawings may be
reduced to
 Half size
 Quarter size
 One eighth size
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Reading for the Machine
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Title Blocks
 Mechanical drawings may be
enlarged
 Double
 Four times
 Ten times
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Reading for the Machine
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Title Blocks



Half scale---1/2, 1:2, or ½”=1”
Twice scale-2/1, 2:1, 2-1, 2”=1” or 2X
Arrangement of numerals indicates
relationship
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Title Blocks
 Refer to scale as the “Do Scale”
 “D” stands for the drawing
 “O” stands for the object
 Sale of 1:2 means
 The drawing is 1 inch
 Object is 2 inches
 A “Do Scale” of 2:1 means
 The drawing is 2 inches
 The object is one inch or one half the drawing size
Schultz and Smith: Blueprint
Reading for the Machine
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Title Blocks
Schultz and Smith: Blueprint
Reading for the Machine
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Title Blocks
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
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Title Blocks
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
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Title Blocks
Schultz and Smith: Blueprint
Reading for the Machine
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Drawing Notes
 Local notes-apply to specific item or area
 Use leaders
 Direct notes to point of application
 General notes apply to whole drawing or
product




Machining
Heat treat
Material
Tolerances
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Reading for the Machine
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Drawing Notes


Abbreviations are used in notes
Keep them brief
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Reading for the Machine
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Drawing Notes-General

UNLESS OTHERWISE SPECIFIED
1.
2.
3.
METRIC UNITS ARE MILLIMETERS
FILS & RNDS ARE .12R
PART SYM ABOUT CL
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Drawing Notes-Local
5 HOLES EQL SP ON 6.000BC
.344 DR, .500 CBORE, .30 DP
.281 DR, 82° CSK, .53 DIA
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Drawing Notes Quiz
1. What type of note applies to an entire
drawing?
General
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Drawing Notes Quiz
2. What type of line is used with local
notes?
Leader
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Drawing Notes Quiz
3. Where do general notes appear on a
drawing?
Above the title block
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Drawing Notes Quiz
4. Interpret the abbreviations SYM and CL
used in the third general note.
Symmetrical and centerline
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Drawing Notes Quiz
5. Interpret the abbreviations DR and CSK
used in the third local note.
Drill and countersink
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Single-View Drawings
 Sometimes
adequate to
describe object
 Material
thickness is listed
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Detail Drawings
 “Production drawings” and “working
drawings” are general terms
 Includes all types of engineering
drawings
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Detail Drawings
 Detail drawings include
 Sufficient number of views
 Dimensions
 Notes
 Other pertinent information
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Reading for the Machine
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Centerlines
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Centerlines
 Intersecting centerlines
drawn through each hole
 Used for locationcenterlines are extended
outside view and
dimensions are added
 Radii are the same-often
share a common axiscommon design practice
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Reading for the Machine
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Schultz and Smith: Blueprint
Reading for the Machine
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Diameters and Radii
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Reading for the Machine
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Diameters and Radii
 Internationally
recognized symbol
for diameter
 
 Use in place of the
abbreviation DIA
 Number of holes
indicated
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Reading for the Machine
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Diameters and Radii
 Overall
dimensions can
be calculated
 Remaining
material around
hole can be
calculated
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Reading for the Machine
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Diameters and Radii
 Remaining
material around
hole can be
calculated
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Reading for the Machine
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Answer the questions
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Reading for the Machine
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Thermostat
Gasket
1. What is the
part number?
11A001
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Reading for the Machine
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Thermostat
Gasket
2. What is the
name of the
part?
Thermostat
gasket
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Reading for the Machine
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Thermostat
Gasket
3. What is the
drawing size?
(A, B, or C)
A
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Thermostat
Gasket
4. What scale is
the drawing?
1:1
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Thermostat
Gasket
5. Use words to
explain the
answer to
question 4.
Actual size
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Thermostat
Gasket
6. How thick is
the part?
.06
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Thermostat
Gasket
7. Is the part
symmetrical?
Yes
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Reading for the Machine
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Thermostat
Gasket
8. Which system of
dimensioning was
used? (Refer to
page 21.)
Decimal
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Reading for the Machine
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98
Thermostat
Gasket
9. What is the
fractional
equivalent of the
center hole size?
(Refer to the
equivalency chart,
page 25.)
2 3/16
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
99
Thermostat
Gasket
10. What is the
fractional
equivalent of the
mounting hole
spacing? (Refer to
the equivalency
chart, page 25.)
3 5/8
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
10
0
Thermostat
Gasket
11. Calculate the
longest overall
dimension of
the part.
4.24
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
10
1
Thermostat
Gasket
12. Calculate the
overall
dimension of
the part
(height.)
2.88
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
10
2
Thermostat
Gasket
13. Calculate the
material
remaining
between the
large hole and
the nearest
outside edge.
.345
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
10
3
Thermostat
Gasket
14. Calculate the
material
remaining
between the
small hole and
the nearest
outside edge.
.155
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
10
4
Thermostat
Gasket
15. Calculate the
material
remaining
between the
large hole and
the nearest
small hole.
.56
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
10
5
Break Lines




Permits removal of a portion of view
Paper size is smaller
Drawing scale can get smaller
Portion removed must be uniform in
shape
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
10
6
Break Lines
Drawing is full
size and does
not require a “B”
size drawing
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
10
7
Break Lines
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
10
8
Break Lines
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
10
9
Break Lines
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
11
0
Break Lines
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
11
1
Typical Dimensions
 Entered after a dimension
 Means all other similar dimensions
are same as one marked “TYP”
 Eliminates repetition of dimensions
 Saves on drawing space
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
11
2
Symmetry
 Indicated by note
 Indicated by view’s centerline
carrying abbreviation
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
11
3
Exercise
Enter dimensions
for the letters
provided.
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
11
4
Bottom
Plate
A
1.50
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
11
5
Bottom
Plate
B
3.60
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
11
6
Bottom
Plate
C
.30
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
11
7
Bottom
Plate
D
1.47
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
11
8
Bottom
Plate
E
6.10
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
11
9
Bottom
Plate
F
2.00
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
12
0
Bottom
Plate
G
.19
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
12
1
Bottom
Plate
H
.57
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
12
2
Bottom
Plate
I
.86
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
12
3
Bottom
Plate
J
.68
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
12
4
Bottom
Plate
K
.10
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
12
5
Bottom
Plate
L
.46
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
12
6
Bottom
Plate
1. What type of
line was drawn
to indicate
symmetry?
Centerline
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
12
7
Bottom
Plate
2. What word is
abbreviated
TYP?
Typical
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
12
8
Bottom
Plate
3. What is the
thickness of
the plate?
.25
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
12
9
Bottom
Plate
4. How many
round holes
does the plate
contain?
10
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
13
0
Bottom
Plate
5. What is the
fractional
equivalent of
the small hole
diameter?
9/32
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
13
1
Bottom
Plate
6. How much
material remains
between a .62
Dia. hole and the
nearest outside
edge?
.25
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
13
2
Bottom
Plate
7. How much
material remains
between a .28
Dia. hole and the
nearest outside
edge?
.16
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
13
3
Bottom
Plate
8. Calculate the
longest overall
dimension of
the plate.
6.76
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
13
4
Tolerances
 Tolerances are assigned to every
dimension
 Assign maximum acceptable deviationtolerance
 Shown with dimension
 Shown in the title block as a general
tolerance
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
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5
Tolerances
 General tolerances commonly assigned
using decimals
 Decimal dimension and tolerance have
same number of places
 Most commonly expressed bilaterallynot always equal in both directions
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
13
6
Tolerances
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
13
7
Tolerance Quiz
1. What is the
two place
decimal
tolerance in
Example A?
 .03
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
13
8
Tolerance Quiz
2. What is the
tolerance for
drilled holes
in Example
A?
+ .010
-.002
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
13
9
Tolerance Quiz
3. What is the
three-place
decimal
tolerance in
Example B?
 .004
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
14
0
Tolerance Quiz
4. What is the
fractional
tolerance in
Example C?
 1/64
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
14
1
Tolerance Quiz
5. What is the
total tolerance
for the twoplace decimal
inch in
Example A?
 .03
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
14
2
Tolerance Quiz
6. What is the
angular
tolerance in
Example C?
 030’
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
14
3
Tolerance Quiz
7. What is the
total tolerance
for the threeplace decimal
inch in
Example B?
 .004
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
14
4
Tolerance Quiz
8. What is the
total tolerance
for drilled
holes in
Example A?
+ .010
-.002
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
14
5
Bolt Circles
 Three or more holes are positioned
around a common center
 Located angularly on a circular
centerline
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
14
6
Bolt Circles
 Dimension of bolt circle appears






Inside of diagonal dimension line
With abbreviation BC after hole data
Holes may be equally spaced
Abbreviation EQL SP follows quantity in local note
Divide 360 by number of holes
One of the holes is on vertical or horizontal
centerline
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
14
7
Bolt Circles
Inside of diagonal
dimension line
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
14
8
Bolt Circles
Inside of diagonal
dimension line
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
14
9
Bolt Circles
With abbreviation
BC after hole dataHoles may be
equally spaced
Abbreviation EQL
SP follows quantity
in local note
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
15
0
Bolt Circles
 Holes may be
located coordinately
 Use only vertical or
horizontal
dimensions
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
15
1
Shim
1. How thick is
the shim?
.020
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
15
2
Shim
2. Is the shim
symmetrical?
No
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
15
3
Shim
3. Are the bolt
circles
concentric?
Yes
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
15
4
Shim
4. How many holes
are in the shim?
8
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
15
5
Shim
5. What is the
tolerance on the
.250 Dia. holes?
.005
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
15
6
Shim
6. What is the
tolerance on the
.500 Dia. holes?
.008
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
15
7
Shim
7. What is the
tolerance on the
1.000 Dia. hole?
.010
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
15
8
Shim
8. What is the
tolerance on the
bolt circles?
.010
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
15
9
Shim
9. What is the
tolerance on
the radii?
.02
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
16
0
Shim
10. How much
material is
between the 5/8”
hole and the
nearest outside
edge?
.1875
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
16
1
Shim
11. How far apart
angularly are
the three .500
Dia. holes?
120°
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
16
2
Shim
12. How far apart
angularly are a
.250 Dia. hole
and the nearest
.500 Dia. hole?
60°
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
16
3
Shim
13. How far apart
angularly are a
.250 Dia. hole
and the farthest
.500 Dia. hole?
180°
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
16
4
Shim
14. How far apart
angularly is the
5/8” hole from
the nearest ½”
hole?
30°
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
16
5
Shim
15. What is the
angular
tolerance for the
hole locations?
±0°30’
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
16
6
Shim
What is the
dimension for A?
1.15
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
16
7
Shim
What is the
dimension for B?
1.125
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
16
8
Shim
What is the
dimension for C?
.625
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
16
9
Shim
What is the
dimension for D?
.525
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
17
0
Shim
What is the
dimension for E?
.275
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
17
1
Maximum & Least Material
Condition
 MMC
 Feature of size contains the maximum
material within assigned tolerances
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
17
2
Maximum & Least Material
Condition
 For a shaft
 At MMC when tolerance is added to its size
dimension (.760)
 At LMC when tolerance is subtracted from
it size dimension (.740)
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
17
3
Maximum & Least Material
Condition
 Internal feature-hole-is at MMC when it
is at its smallest size
Sizes are exaggerated.
NTS-Not To Scale
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
17
4
Maximum & Least Material
Condition
 Internal feature-hole-is at LMC when it
is at its largest size
Sizes are exaggerated.
NTS-Not To Scale
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
17
5
Maximum & Least Material
Condition
 On any part
 All surfaces are features (they are not
measurable-size)
 For LMC and MMC, the feature must have a
size dimension
 Must be associated with tow opposing
elements or two opposed parallel surfaces
 Must be measurable
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
17
6
A
MMC
LMC
DOES NOT APPLY
X
MMC
LMC
DOES NOT APPLY
B
1.005
.995
MMC
LMC
DOES NOT APPLY
C
3.005
2.995
MMC
LMC
DOES NOT APPLY
D
1.30
1.32
MMC
LMC
DOES NOT APPLY
E
.349
.339
MMC
LMC
DOES NOT APPLY
F
.30
.32
MMC
LMC
DOES NOT APPLY
G
.66
.64
H
MMC
LMC
DOES NOT APPLY
X
I
MMC
LMC
DOES NOT APPLY
X
MMC
LMC
DOES NOT APPLY
J
.905
.895
MMC
LMC
DOES NOT APPLY
K
1.91
1.89
L
MMC
LMC
DOES NOT APPLY
X
MMC
LMC
DOES NOT APPLY
M
.258
.248
MMC
LMC
DOES NOT APPLY
N
.370
.380
Allowance
 Minimum clearance between mating parts
 Maximum interference between mating
parts
 Calculate by subtracting MMC of shaft from
MMC of hole
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
19
1
Allowance
 When shaft’s MMC is smaller than hole’s
MMC-positive allowance-clearance
 When shaft’s MMC is larger than hole’s
MMC-negative allowance-interference
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
19
2
Allowance
 Positive or negative-allowance is always
the tightest possible fit between mating
parts
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
19
3
Allowance
Use the formula for calculating
allowance:
MMC Hole - MMC Shaft = Allowance
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
19
4
Allowance
MMC Hole
-MMC Shaft A
Allowance
=.999
=.998
=.001 (positive)
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
19
5
Allowance
MMC Hole
-MMC Shaft B
Allowance
=.999
=1.004
=-.005 (negative)
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
19
6
MMC/Allowance Quiz
1. What is the MMC of hole “D?”
.748
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
19
7
MMC/Allowance Quiz
2. What is the MMC of Shaft “C?”
.745
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
19
8
MMC/Allowance Quiz
3. What is the allowance between “C” and
“D?’
.003
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
19
9
MMC/Allowance Quiz
4. Is the allowance positive or negative?
Positive
Schultz and Smith: Blueprint
Reading for the Machine
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Trades, 6th edition
20
0
MMC/Allowance Quiz
5. Is it a clearance or interference fit?
Clearance
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
20
1
MMC/Allowance Quiz
6. What is the MMC of hole “F?”
.743
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
20
2
MMC/Allowance Quiz
7. What is the MMC of shaft “E?”
.747
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
20
3
MMC/Allowance Quiz
8. What is the allowance between “E” and
“F?”
-.004
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
20
4
MMC/Allowance Quiz
9. Is the allowance positive or negative?
Negative
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
20
5
MMC/Allowance Quiz
10. Is it a clearance or interference fit?
Interference
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
20
6
MMC/Allowance Quiz
1. What is the LMC of hole “D?”
.752
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
20
7
MMC/Allowance Quiz
2. What is the LMC of Shaft “C?”
.735
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
20
8
MMC/Allowance Quiz
3. What is the allowance between “C” and
“D?’
.017
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
20
9
MMC/Allowance Quiz
4. Is the allowance positive or negative?
Positive
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
21
0
MMC/Allowance Quiz
5. Is it a clearance or interference fit?
Clearance
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
21
1
MMC/Allowance Quiz
6. What is the LMC of hole “F?”
.745
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
21
2
MMC/Allowance Quiz
7. What is the LMC of shaft “E?”
.743
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
21
3
MMC/Allowance Quiz
8. What is the allowance between “E” and
“F?”
.002
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
21
4
MMC/Allowance Quiz
9. Is the allowance positive or negative?
Positive
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
21
5
MMC/Allowance Quiz
10. Is it a clearance or interference fit?
Clearance
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
21
6
Arcs And Circles
 When an arc is less than a complete
circle-dimension it by radius
 May have a definite center-e.g.. 1.00R
& 4.50R in Dwg. 11A004
 May float-run tangent with other arcs or
lines-e.g. .75R same print
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
21
7
Arcs And Circles
 Radial dimension not used for
circles or diameters
 Radial dimension doubles permit
greater variation
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
21
8
Arcs And Circles
 E.g. 1.000 DIA with .01 yields dimension
between .99 and 1.01 DIA
 .50R with .01 would permit diametric
dimensions between .98 and 1.02 DIA
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
21
9
Arcs And
Circles
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
22
0
Arcs And
Circles
1. Is the print
drawn to (a)
half-size or (b)
twice-size?
(a) half-size
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
22
1
Arcs And
Circles
2. What is the
thickness of
the spacer?
.500
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
22
2
Arcs And
Circles
3. Interpret the
abbreviation
CRS used in
the title block?
Cold-Rolled Steel
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
22
3
Arcs And
Circles
4. How many
holes does the
spacer
contain?
10
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
22
4
Arcs And
Circles
5. Is the spacer
symmetrical
about the vertical
and horizontal
centerline?
Vertical
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
22
5
Arcs And
Circles
6. What is the
angular
dimension
between each
small hole?
60
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
22
6
Arcs And
Circles
7. What is the
angular
dimension
between each
large hole?
120
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
22
7
Arcs And
Circles
8. What tolerance
is assigned to
the angular
spacing of the
drilled holes?
 030’
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
22
8
Arcs And
Circles
9. What is the
tolerance on
the bolt
circles?
 .01
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
22
9
Arcs And
Circles
10. What is the
tolerance on
the center
hole
diameter?
 .005
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
23
0
Arcs And
Circles
11. What is the
MMC of the
center hole?
4.995
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
23
1
Arcs And
Circles
12. What is the
tolerance on
the drilled
holes?
+.010
-.002
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
23
2
Arcs And
Circles
13. What is the
MMC of the
.688 holes?
.686
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
23
3
Arcs And
Circles
14. What is the
overall
dimension
along the
horizontal CL?
9.00
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
23
4
Arcs And
Circles
15. What is the
overall
dimension
along the
vertical CL?
10.50
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
23
5
Arcs And
Circles
Enter the
dimension for
the letter “A.”
.50
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
23
6
Arcs And
Circles
Enter the
dimension for
the letter “B.”
.531
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
23
7
Arcs And
Circles
Enter the
dimension for
the letter “C.”
1.00
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
23
8
Arcs And
Circles
Enter the
dimension for
the letter “D.”
.656
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
23
9
Arcs And
Circles
Enter the
dimension for
the letter “E.”
.687
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
24
0
Arcs And
Circles
Enter the
dimension for
the letter “A.”
.81
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
24
1
Arcs And
Circles
Enter the
dimension for
the letter “B.”
2.32
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
24
2
Arcs And
Circles
Enter the
dimension for
the letter “C.”
.15
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
24
3
Arcs And
Circles
Enter the
dimension for
the letter “D.”
3.28
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
24
4
Arcs And
Circles
Enter the
dimension for
the letter “E.”
7.26
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
24
5
Arcs And
Circles
Enter the
dimension for
the letter “F.”
1.72
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
24
6
Arcs And
Circles
Enter the
dimension for
the letter “G.”
1.58
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
24
7
Arcs And
Circles
Enter the
dimension for
the letter “H.”
.42
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
24
8
Arcs And
Circles
Enter the
dimension for
the letter “I.”
30°
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
24
9
Arcs And
Circles
Enter the
dimension for
the letter “J.”
3.98
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
25
0
Arcs And
Circles
Enter the
dimension for
the letter “K.”
.01
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
25
1
Arcs And
Circles
Enter the
dimension for
the letter “L.”
.20
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
25
2
Arcs And
Circles
Enter the
dimension for
the letter “M.”
.19
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
25
3
Arcs And
Circles
Enter the
dimension for
the letter “N.”
.12
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
25
4
Arcs And
Circles
Enter the
dimension for
the letter “0.”
.30
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
25
5
Arcs And
Circles
1. How much
material
remains
between a .250
hole and the
outside edge?
.225
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
25
6
Arcs And
Circles
2. How much
material
remains
between a .220
hole and the
outside edge?
.19
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
25
7
Arcs And
Circles
3. Are the .200
holes located in
the exact center
between ID and
OD?
(Calculate this.)
No
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
25
8
Arcs And
Circles
4. What is the
MMC of the
center hole?
2.555
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
25
9
Arcs And
Circles
5. What is the
MMC of the
.250 holes?
.248
Schultz and Smith: Blueprint
Reading for the Machine
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.
Trades, 6th edition
26
0