Transcript ExampleProjectLayout.ppt

Steering Quickener
Justin Marsha / Jonathan Pierson
Part Specification
Back Plate
Back plate will be CNC milled from a solid block of aluminum. Holes will be
center drilled and CNC milled to size and tolerances.
Front Plate
Front plate will be CNC milled from a solid block of aluminum. Holes will be
center drilled and CNC milled to size and tolerances.
Input Shaft
Input shaft will be lathed down to size from 25mm solid stock shaft. Gear will then
be pressed onto shaft and within tolerance.
Output Shaft
Input shaft will be lathed down to size from 25mm solid stock shaft. Gear will then
be pressed onto shaft and within tolerance.
Gears
Gears will be sourced from a third party manufacture. Then pressed onto shafts
to set length and tolerances.
Process Tolerances
Process
Milling/Lathe
Drilling
Min Tolerances
Geometric Restrictions
 +/- .05 mm
 4mm end mill to be used
 +/- .1 mm on size,
shape, alignment
 Holes must be center drilled
before using boring bar
Minimum Assembly Clearances
Parts
Bearing
Bearing vs Bearing Recess
Bearing vs Shaft
Min Clearances
Assuming that bearing size is exact
1 mm
0 mm
Front Plate vs Back Plate
Shaft Gear vs Plates
Gear vs Shaft
0 mm
1.4 mm
-1 mm (Press Fit)
Steering Quickener
Project
Description:
Project Website:
MEC 1012 Design Communication II Spring 2005
Steering Quickener by Justin Marsha and Jonathan Pierson