Case of clutch pressure plate housing

The clutch pressure plate of a German car parts manufacturer

Material is AlSi9Cu3 (Fe) D

The processing part is shown in the figure of each dimension. This case design special fixture and special tool scheme solves the following four problems:

1. Clamp of thin wall irregular parts

2. The combined machining of turning and drilling is completed simultaneously with a machine tool

3. The drawing Φ87.5 roundness in 0.008

4. Five protruding claws for continuous cutting, flatness 0.1