The principle of non-movement of parts after positioning in the fixture

The direction of the clamping force is selected to point to the positioning datum (a datum), and the magnitude of the clamping force should be sufficient to balance the influence of other forces and not cause the parts to move during the processing. The principle of non-deformation after the parts are positioned in the fixture. Under the action of the clamping force, the parts will not be deformed during the machining process that is not allowed by the accuracy. The appropriate clamping position must be selected and the contact state of the pressure plate and the part must be adjusted. , Apply proper pressing force.　　The principle of non-vibration after the parts are positioned in the fixture.　　Ensure the rigidity of the support and clamping system. The clamping position should be as close as possible to the processing area of u200bu200bthe part to avoid vibration of the part and clamping system. Generally speaking, for the fixture used for rough machining, choose a larger clamping force, mainly considering the principle of non-movement of the parts, and for the fixture used for finishing, choose a smaller clamping force, mainly considering the non-deformation and non-deformation of the parts. Principle of vibration.　　 Fixture, Fixture, Inspection Tool Processing