Method for measuring normal meshing tooth profile of involute spiral cylindrical gear

Abstract

The invention discloses a method for measuring the normal meshing tooth profile of an involute spiral cylindrical gear, which is used for measuring the normal meshing tooth profile on the tooth surface of a measured gear, and a cross-axis involute spiral cylindrical gear is driven to move through the normal meshing tooth profile. The actual movement working conditions of the transmission quality and the working stability of the gear reflected by the normal meshing tooth profile are measured; in gear hobbing, gear shaving and worm grinding wheel grinding generating method machining, movement of a tool and a gear is achieved based on the normal meshing tooth shape, and control over the normal meshing tooth shape has the unique advantage on control over the gear machining quality. Measurement is achieved through a gear measurement center, four-axis linkage measurement is adopted, and the situation that the measurement precision is prone to being affected by the size of a measured gear is effectively improved. Radial and axial motions are respectively limited to realize simplified measurement of normal meshing tooth profiles and measurement of involutes by a meshing method. The method is suitable for measuring the involute of the straight toothed cylindrical gear, and the normal meshing tooth form on the tooth surface of the gear coincides with the involute, so that the method is also suitable for measuring the involute of the straight toothed spur gear.

Description

Technical field[0001]The present invention relates to a gear measuring method, and more particularly to a method of improving a method of jet a spiral cylindrical gear.Background technique[0002]The gear is an important base transmission, which has the advantages of large carrying capacity, high drive precision, constant drive power, and has become a key component for transmitting motion and power in various mechanical equipment. Therefore, the guaranteed gear mass is an important part of promoting gear processing and wide application.[0003]The tooth surface of the progressive cylindrical gear is gradually open, and there are four common characteristics: progressive wire, helix, method to mesh and contact line, such asfigure 1 Indicated. In the current international standard, in national standards, the tooth surface of the evaluation gear is achieved by measuring progressive discharge and helix.[0004]The cross shaft gradually open spiral cylindrical gear drive, belongs to the point c...

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Problems solved by technology

[0005] But at present, whether it is a three-dimensional coordinate measuring machine or a gear measurement center, the measurement of the gear tooth surface is measured by the involute and the helix, which sometimes cannot effectively reflect the real information of the gear transmission quality and processing quality. And the existing measuring instruments do not have the measurement function of the normal meshing tooth profile

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