Transcript IENG 471 Lecture 14 Material Handling

IENG 471 - Lecture 14
Material Handling
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Assignments
 Current Assignment:
 Finish HW 5
 Next Assignment
 HW 6:
 Work in teams of TWO students
 Turn in ONE spreadsheet for both
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Put “IENG 471 HW 6” in subject line
First line of message has BOTH student names
Attach Excel spreadsheet
Format your problems professionally
Do NOT copy website (or other’s) text on Question 3.d & 3.e –
your answer needs to be your understanding, in your words,
in your spreadsheet format
 Due by 5:00 PM on 01 Nov
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Material Handling
 The art and science of moving, storing, protecting,
and controlling material.
 Material Handling provides for:
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The right amount
Of the right material
In the right condition
At the right place
In the right orientation
In the right sequence
For the right cost
At the right time
By the right method
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Material Handling – Bill of ‘Rights’
 The right amount –
 exactly what is needed (no more, no less)
 Of the right material –
 identification of correct material
 In the right condition –
 physically ready for use
 At the right place –
 at the point of use or storage
 In the right orientation –
 positioned for ease of handling
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Material Handling – Bill of ‘Rights’
 In the right sequence –
 helping to eliminate unnecessary/wasted efforts
 For the right cost –
 the most efficient method at the most reasonable
cost
 over the lifetime of the system
 At the right time –
 on-time, not early or late
 By the right method –
 incorporating the impacts on safety, etc..
 product safety, personnel safety, equipment safety,
environmental safety, …
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10 Material Handling Principles
1)
Planning Principle
 Defined in advance of implementation, covering:
 What
 When
 Where
 Whom
 How
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Standardization Principle
 Reducing the variation in methods and equipment employed
3)
Work Principle
 Measured in Flow X Distance
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Ergonomic Principle
 Adapting the work to fit the abilities of the worker
5)
Unit Load Principle
 The load that can be moved as a single entity regardless of the
number of component units
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Material Handling Principles
6) Space Utilization Principle
 Space is 3-Dimensional in Material Handling
 Unit is the cube
7) System Principle
 Combination of
 Interacting entities and
 Independent entities
8) Automation Principle
 High degree of mechanization, control, reprogrammablity
 Very rarely is it wise to use people as material handlers**
9) Environmental Principle
 Reuse of, and reduction of impact upon natural resources
10) Life-Cycle Cost Principle
 Incorporating all foreseeable cash flows from start to disposal
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Material Handling Design Steps
Define objective & scope of operation
Analyze the operation’s requirements
Generate multiple alternatives
Evaluate each alternative on criteria
Select preferred design
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Based on reasonable weighting of criteria
Implement preferred design
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Plan (with schedule) for:
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Acquisition
Installation
Training & Verification
Operation & Maintenance
Removal & Disposal
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Reusable Containers
 Reusable containers can increase efficiency of
operations. Measures:
 Container Space Utilization
 Usable Cube divided by Exterior Container Envelope
 Storage Space Efficiency
 Usable Cube divided by Storage Cube
 Container Nesting Ratio
 Overall Container Dimension divided by Nested Dimension
 Trailer Space Utilization
 Trailer Usable Cube divided by Loaded Storage Cube
 Trailer Usable Cube = Usable Cube x Number of Containers in Trailer
 Trailer Return Ratio
 Total Unloaded Container Cube divided by Loaded
Container Cube
 Progressive Dimension System
 Ratios: 1:1, 1:2, 1:4, 1:8, 1:16
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Example Illustrations
 Container Space Utilization
 Usable Cube divided by Exterior Container Envelope
 Storage Space Efficiency
 Total Usable Cube divided by Storage Cube
 Container Nesting Ratio
 Overall Container Dimension divided by Nested Dimension
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Example Illustrations
 Progressive Dimension System
 Full Size Container
 Nested 1/2 - Size Container
 Nested 1/4 - Size Container
 Nested 1/8 - Size Container
 Nested 1/16 - Size Container
 Results in fewer container sizes while maximizing efficiency
1/16
1/4
1/8
Full Size 1/16
Container
1/2
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Pallets
 Standard Sizes
 32x40 40x48* 36x48 42x42 48x48
 Typical Construction
 See Fig. 5.7, p. 180, and Fig. 5.8, p. 181
 Two Classes
 Two-Way and Four-Way
 Materials
 Wood, PressBoard, Corrugated, Plastic, Metal
 Weight savings
 Durability improvement
 Repairability improvement
 Environmental impact
 Stacking Patterns
 See Fig. 5.9, p. 183
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Pallets
 Aisle Width Requirements for Common Pallet Handling
Equipment:
Table 5.4 after p. 211 of 4th ed. of Tompkins, et al. text.
Recommended Aisle Widths for Materials Handling Equipment in Facility Design
Equipment Type
Pick Aisle (ft) Cross Aisle (ft)
Three Wheel Counter Balance
9 - 10
10
Four Wheel Counter Balance
10 - 12
12
Reach Truck
8- 6
10
Double Reach Truck
8- 6
10
Order Picker Truck
5
10
Turret Truck
5
12
Swing Mast Truck
5- 6
12
Side Loader
6
15 - 20
Fixed Mast Truck
5
20
Counter Balanced with Attachment
12
14 - 20
Manual Pallet Jack
6
8 - 10
Powered Pallet Jack
7- 8
8 - 10
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Pallets (Types & Stacking Patterns)
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Material Handling Equipment
 Textbook Resources:
 Appendix 5A, pp. 206 – 213 has a checklist
 Appendix 5B, pp. 214 – 289 catalogs various
equipment with photos
 Appendix 5C, pp. 290 – 296 describes
automatically guided vehicles (AGVs)
 Online Resource:
 http://www.mhia.org/et/ET_MHI_CICMHE_Home.cfm
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Questions & Issues
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