The development of the fixture of the float brake caliper based on 3D design

According to the technological requirements of float disc brake caliper during processing, special fixture of the caliper is researched based on 3D design in this paper. Through the design and kinematics simulation for special fixture 3D model, it is convenient to forecast assembly interference of lathe fixture and add the mass of lead brick accurately before prototype is made. Therefore, it solves the vibration problem of special fixture due to the unbalance mass and improves the run-out tolerance precision of cylinder hole of the workpiece compared with machine tool spindle. These means ensure the processing quality of the cylinder hole in brake caliper.