Gear pitch deviation measuring method and measuring tool thereof

Abstract

The invention discloses a gear pitch deviation measuring method and a measuring tool thereof. The method comprises the following steps: adjusting the heights of a fixed measuring jaw and a movable measuring jaw of a pitch measuring mechanism; hoisting a measuring force weight on the constant force applying side of the measured gear through a hanging rope to obtain a transverse reference value of the transverse position of the tooth pitch measuring mechanism; obtaining a reference tooth pitch value of the measured reference tooth; the sliding tooth pitch measuring mechanism enabling the measured first tooth to be located between the fixed measuring jaw and the movable measuring jaw; enabling the compression amount reading of the second dial indicator to be consistent with the transverse reference amount value; obtaining a first tooth pitch value of the measured first tooth; comparing the first tooth pitch value with a reference tooth pitch value to obtain a tooth pitch deviation value.According to the gear pitch deviation measurement method, a constant measurement force is applied to the constant force application side of the measured gear, so that the measurement of the pitch of the measured gear is not easily influenced by the environment and operators, and the pitch deviation of the measured gear is accurately measured.

Description

technical field [0001] The invention relates to the technical field of measuring tools, in particular to a method for measuring gear pitch deviation and a measuring tool thereof. Background technique [0002] The single pitch deviation refers to the difference between the actual pitch and the nominal pitch on the pitch circle, and the cumulative total pitch deviation refers to the actual arc length and the nominal arc length between any two tooth surfaces on the same side on the pitch circle. The maximum absolute value of the length difference, that is, the algebraic difference between the maximum tooth pitch cumulative deviation and the minimum tooth pitch cumulative deviation. In actual measurement, a certain pitch is usually used as the reference pitch, and the deviation of the rest of the pitches from the reference pitch is measured. The measuring tools include a universal tooth measuring instrument and a hand-held tooth distance measuring instrument. The hand-held too...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the position of the fixed jaws cannot be changed during operation, and the two jaws are in contact at the same time. The measurement force during measurement is completely controlled by the operator’s experience, and there is a problem that the measurement force of each tooth is different. situation, so the error is difficult to control and affects the accuracy of the measurement

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