This fixture is used to hold a CCB(Cross car beam) part in CMM(Coordinate measuring machine). It is a manual fixture. There are 4 clamping points and 2 retractable locating pins. When the part is loaded to the fixture by the operator, clamps are closed one by one according to customer specific clamping sequence by the operator. After all clamps are closed, pins are retracted from the part. The pin assembly is also rotated away to be able to get better access for the measurement of the alignment holes.
- Two spring loaded manual clamp to limit the clamping force in desired range.
- Retractable and rotatable locating pin.
- RPS features on the fixture to create coordinate system for the fixture.
- Lifting rings.
- Tower position is adjustable in X and Y.
4 point manual CMM fixture overview
After the part is clamped, locating pin is retracted and rotated away, to open space for the CMM probe.
Rotated assembly is locked in position with a spring plunger so that it does not fall back during measurement process.
Design of Machinery and Automation 