Planetary gear spherical surface measuring device

Abstract

The invention discloses a planetary gear spherical surface measuring device which comprises dial indicators, dial indicator frames, a screw and a tooth mould seat. A conical tooth ring is arranged in the upper part of the tooth mould seat, and a positioning component of a circular hole is arranged at the lower part the tooth mould seat. The dial indicator frames are umbrella-shaped frame components, spherical trisection fork strips are arranged on the top, and vertical shafts are connected to the lower parts of the dial indicator frames. The bottom section of the vertical shaft is in clearance fit with the circular hole of the bottom face of the tooth mould seat and the middle section of the vertical shaft is in clearance fit with the inner hole of a planetary gear to be tested. The spherical surfaces on the top of the dial indicator frames are concentric with the spherical surface of the planetary gear to be tested which is positioned and arranged on the tooth mould seat; the three fork strips are respectively provided with one dial indicator which is installed into a through hole in a way that the dial indicator head faces downwards; through holes on the three fork strips are respectively arranged on an outer point, a middle point and an inner point of the spherical surface of the planetary gear to be tested; according to the invention, the standard planetary gear is arranged in the tooth mould seat, the three dial indicators are zeroed, then the planetary gear to be test is installed for comparative measurement, and the installation position of a cutter or a clamp is guided to be adjusted according to a real measurement result. The planetary gear spherical surface measuring device is not restricted by particular detection conditions, and is particularly applicable to the on-line detection of a production site.

Description

technical field [0001] The invention relates to a length measuring instrument, in particular to a device for measuring the spherical surface of a planetary gear by setting three positioning points. Background technique [0002] The planetary gear is one of the important parts in the differential, and its large end surface is spherical. The spherical surface is the reference mating surface for the axial limit of the planetary gear at the installation position. It has high shape and position tolerance requirements. It is usually manufactured by mechanical cutting and can be mass-produced after the machine tools, tools and fixtures are adjusted in place. . However, the tools and fixtures must have normal wear and tear during the machining process, and the installation errors generated when the tools and fixtures are replaced naturally form manufacturing errors, resulting in a decline in product quality. Therefore, during the mechanical cutting process, it is necessary to freq...

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly aims at the problem that the prior art is not suitable for on-line detection, and proposes a planetary gear spherical surface measuring device suitable for on-line detection with simple structure, convenient operation, high detection accuracy and low detection condition requirements

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