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The principle of precision positioning of automotive fixtures

2023-04-08

The principle of precision positioning of automotive fixtures
The principles of precision positioning of automotive fixtures are as follows:
1: The position accuracy of the main positioning is ±0.25mm, and the machining accuracy is -0.05mm;

2: The distance difference between the fixture reference surface and the measuring points in the vertical direction of all fixtures is ±0.25mm.

3: The distance difference between the positioning hole and the positioning hole on the horizontal plane is ±0.05mm, and the roughness is 1.6um.

4: The distance difference between all the reference planes and the positioning holes is ±0.05mm, and the roughness is 1.6um.

5: The accuracy between the reference surfaces is allowed to have a distance difference of ±0.1mm, and the accuracy between the measurement surfaces is allowed to have a distance difference of ±0.2mm.

6: The repeatability of the turning mechanism is ±0.2 (at Φ200);
7: When the three-coordinate inspection fixture is used, its manufacturing accuracy requires inspection records and fill in the equipment inspection records.