Manufacturing

Plans for Each Part

Base

The base will first be cast. Holes will be spot faced, center drilled and drilled on a universal milling machine.

Cover

The cover will be injection molded

Connecting Link

The connecting link will first be forged (including drill point hole locations), holes will be spot faced and jig bored.

Presumed Process Capabilities

Process

Min Tolerances

Geometric Restrictions

Injection Molding

     +/- .1 mm over 100 mm

     +/-.05 mm on small features

     1 min. cavity draft

     .5 min. core draft

     2.3 mm wall

     ribs intersect at 60% max

Milling

     +/- .05 mm

     No sharp inside corners

     No small detail in narrow deep locations

Forging

     +/- .05 mm

     3 min. cavity draft

     1 min. core draft

     Thick convex geometries

Casting

     +/- .1 mm over 100 mm

     +/-.05 mm on small features

     3 min. cavity draft

     1 min. core draft

     4 mm wall
ribs intersect at 60% max

     fillet corners

Jig Boring

     +/- .01 mm size, shape, alignment

     Holes only

Drilling

     +/- .1 mm on size, shape, alignment

     Holes only

 

      

      

Minimum Assembly Clearances

Parts

Min Clearances

Cover and Base vs. Screws

.05 mm

Connecting Link vs. Bushings

-.01 mm