Finishing the mandrel of the straight bevel gear base

When the factory produces the straight-toothed bevel gears, the A and B faces (Fig. 1) are the benchmarks for processing, inspection and assembly. The internal splines have radial runout (0.08~0.15mm) requirements relative to the B surface. The mandrel is clamped and the reference faces A and B are ground. The cylindrical pin 1 (Fig. 2) of the grinding machine spindle is in an interference fit with the mandrel body 4 for rotating the mandrel. The collar 2 and the mandrel body 4 have an interference fit, which ensures the circular runout requirement of the figure. The taper sleeve 5 is removed when the workpiece is mounted, and the taper sleeve 5 and the mandrel body 4 have a matching clearance as shown and a 60° taper jump requirement. The steel ball 3 and the clamp ring 2 can be coupled in various ways, but it is necessary to ensure that the steel ball 3 can flexibly rotate. Generally, three steel balls having a diameter difference of not more than 0.002 mm are generally selected, and the steel balls are adhered to the clamp ring 2 with butter.