Handheld universal measuring instrument for M values of internal splines

Abstract

The invention discloses a handheld universal measuring instrument for M values of internal splines. The handheld universal measuring instrument comprises a body, an elastomer, a gauge chuck, a gauge chuck expansion sleeve, a transmission bar, an ejector pin, a dial gauge, a measuring head and a calibration part; a vertically through inner cavity is arranged in the middle of the body, the upper end of the elastomer is fixed to the lower end of the body, the measuring head is arranged at the lower end of the elastomer, the transmission bar and the ejector pin are arranged in the inner cavity of the body, and the lower end of the transmission bar is connected with the ejector pin in an abutted manner; and the gauge chuck is fixed to the upper end of the gauge chuck expansion sleeve, the lower end of the gauge chuck expansion sleeve is fixedly connected with the upper end of the body, a vertically through inner cavity is arranged in the middle of the gauge chuck expansion sleeve, the transmission bar extends into the lower end of the inner cavity of the gauge chuck expansion sleeve, the lower end of the dial gauge extends into the inner cavity of the gauge chuck expansion sleeve from the upper portion of the inner cavity of the gauge chuck expansion sleeve, and the upper end of the transmission bar is connected with the lower end of the dial gauge in an abutted manner. The handheld universal measuring instrument has the advantages of precise and accurate measurement, wide measurement range, high applicability and the like.

Description

technical field [0001] The invention relates to a measuring instrument, in particular to a hand-held universal measuring instrument for measuring the actual value of the M value of the involute internal spline (cross-stick (ball) distance, stick (ball) distance) size. Background technique [0002] The involute spline connection is currently the most widely used mechanical connection method in power transmission in the fields of automobiles, aviation, construction machinery, etc. in the world. Manufacturers of related spline parts generally use two traditional methods to detect the actual value of the M value of the involute internal spline (cross-stick (ball) distance, stick (ball) distance) size: one is to use a measuring rod plus a micrometer (or other auxiliary tools) direct measurement, but the measurement efficiency of this method is low, the influence of human factors is large, the accuracy is not high, and it is not feasible in mass production; It is simple, but ...

AI Technical Summary

Problems solved by technology

Manufacturers of related spline parts generally use two traditional methods to detect the actual value of the M value of the involute internal spline (cross-stick (ball) distance, stick (ball) distance) size: one is to use a measuring rod plus a micrometer (or other auxiliary tools) direct measurement, but the measurement efficiency of this method is low, the influence of human factors is large, the accuracy is not high, and it is not feasible in mass production; It is simple, but it can only judge whether the spline is qualified or not, and cannot measure the actual value of the M value of the spline, especially when it is required to perform graded interchange in some precision spline fits.

Images