Brake disc form and location tolerance measuring method and measuring instrument for realizing same

Abstract

The invention relates to a measuring method for measuring parameters such as jumpy geometric senses and planeness of upper and lower brake surfaces of a brake disc of a car and a measuring instrument for realizing the method. According to the measuring method and the measuring instrument for realizing the method, jumping amount and planeness of paired reference of the upper and lower brake surfaces, the jumping amount of the top surface and planeness of paired reference, the planeness of an inner reference surface, coaxiality of paired reference hole of the outer circle surface, and thickness difference of the brake disc on any circumference of the two brake surfaces can be measured. The measuring method comprises the steps of: calibrating, positioning and rotating the work-piece for a circle; sampling data from 12 displacement sensors and 12 sampling points during the rotating process; and performing comparison and analysis on sampled data and qualified data in a database by an IPC (Industrial Personal Computer). The measuring instrument for realizing the method comprises a display device, a device body, a bracket and the like, wherein the device body comprises a rotating mechanism, a measuring mechanism, a compressing mechanism, a locating mechanism, a driving mechanism, a three-color alarm and the like; and the measuring mechanism is internally provided with 12 displacement sensors.

Description

technical field [0001] The invention relates to a measuring method for measuring geometric quantities such as runout and flatness of the upper and lower braking surfaces of an automobile brake disc and a measuring instrument for realizing the method. Background technique [0002] With the rapid development of our automobile industry, the precision requirements for related auto parts are getting higher and higher. The traditional automobile (automatic) brake disc runout detection is carried out manually, which has low efficiency and low accuracy. [0003] Chinese Invention Patent Publication CN 101210799A discloses a car brake disc assembly runout measuring instrument, including industrial microcomputer control electric box, equipment body, operating table, equipment protective cover, measuring protective cover, safety protection switch, on the operating platform The board is equipped with a brake surface runout measurement part, a pressing mechanism, and a positioning platf...

AI Technical Summary

Problems solved by technology

Although the measuring instrument disclosed above can be used to measure the runout of the braking surface, it cannot measure the flatness of the upper and lower braking surfaces, the flatness of the inner plane reference surface, the coaxiality, etc.

Images