Gear grinding tool for internal spline gear

Abstract

The invention provides a gear grinding tool for an internal spline gear. The gear grinding tool comprises a gear grinding mandrel, a first nut, an elastic metal ring, an expansion sleeve and a secondnut. The gear grinding mandrel comprises a mounting handle, a first external threaded section, a cone-shaped section and a second external threaded section which are successively arranged back and front; the cone-shaped section is small on the front part but big on the back part; the first nut is screwed to the first external threaded section; a cone-shaped hole is formed in the expansion sleeve;the expansion sleeve is arranged on the cone-shaped section; a plurality of spline teeth are arranged on the outer wall of the expansion sleeve; a plurality of straight slots are formed in the outer surface of the expansion sleeve; a first opening is further formed in the side wall of the expansion sleeve; the first opening is internally filled with sponge; lubricating oil impregnates the sponge;the second nut is screwed to the second external threaded section; a second opening is formed in the elastic metal ring; the elastic metal ring comprises a plurality of protrusive boards; and the protrusive boards are fixedly connected to the back end surface of the expansion sleeve through screws. By adopting the technical scheme, the fixing stability can be improved, and the machining precisionof the internal spline gear can be improved.

Description

technical field [0001] The invention belongs to the technical field of fixtures, in particular to a gear grinding tool for internal spline gears. Background technique [0002] In gear production, most gear grinding fixtures use clearance fit positioning mandrels, but due to the clearance between the mandrel and the gear hole, the gear fit reference is skewed relative to the machining rotation axis, resulting in geometric eccentricity, which will increase the workpiece. Pitch error, when the gear is fixed in this way, the fixing stability is poor, which will affect the machining accuracy of the gear. Contents of the invention [0003] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a gear grinding tool for internal spline gears. [0004] The purpose of the present invention is achieved by such a technical solution, which includes a grinding mandrel, a first nut, an elastic metal ring, an expansion sleeve and a second nut, a...

AI Technical Summary

Problems solved by technology

[0002] In gear production, most gear grinding fixtures use clearance fit positioning mandrels, but due to the clearance between the mandrel and the gear hole, the gear fit reference is skewed relative to the machining rotation axis, resulting in geometric eccentricity, which will increase the workpiece. Pitch error, when the gear is fixed in this way, the fixing stability is poor, which will affect the machining accuracy of the gear

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