Chain wheel outer circle and end surface grinding tool

Abstract

The invention belongs to the technical field of machining, and in particular, relates to a chain wheel outer circle and end surface grinding tool. The tool comprises a mandrel, an end surface polishing sleeve, a centering sleeve spline sleeve, a pressing sleeve and a flower nut; the end surface polishing sleeve, the centering sleeve spline sleeve, the pressing sleeve and the flower nut sleeve theouter side of the mandrel in sequence side by side; the end surface polishing sleeve and a positioning sleeve spline sleeve are in inference fit with the mandrel; the maximum outer diameter of the tail end part of the end surface positioning sleeve is larger than the maximum outer diameter of the positioning sleeve spline sleeve; an involute spline is arranged at the outer periphery of the positioning sleeve spline sleeve, and is matched with a center inner spline of a chain wheel to be machined; the pressing sleeve is in clearance fit with the mandrel; an external thread is arranged on the outer side wall, near the tail end direction, of the middle end of the mandrel; and the flower nut is connected with the thread of the mandrel. The tool realizes once clamping and grinding, prevents accumulated errors caused by multiple times of clamping, and guarantees the run-out tolerance of end surfaces relative to the involute spline, the run-out tolerance of outer circles relative to the involute spline, the coaxiality tolerance of the outer circles and all size tolerances.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, in particular to a tool for grinding the outer circle and end face of a sprocket. Background technique [0002] Sprockets are widely used as a transmission component in motorcycles, automobiles, marine engines, and various industrial machinery. At present, the engine timing system not only requires accurate control of intake and exhaust, but also puts forward higher requirements for the manufacturing accuracy, transmission accuracy, and noise of each core component. The timing sprocket is a key core component in the engine timing system, and its manufacturing accuracy directly affects the transmission accuracy, service life and noise performance of the entire system. [0003] At present, engine manufacturers at home and abroad have an increasing demand for high-precision sprockets, and the requirements are getting higher and higher. To meet the high-end customers' precision require...

AI Technical Summary

Problems solved by technology

[0003] At present, engine manufacturers at home and abroad have an increasing demand for high-precision sprockets, and the requirements are getting higher and higher. To meet the high-end customers' precision requirements for sprockets, it is necessary to grind the sprocket, especially for grinding the outer circle and the end face at the same time. The technical difficulty is high, and the traditional grinding method requires multiple clamping, resulting in a large cumulative error, and it is difficult to guarantee the tolerances of various shapes and positions

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