Method for measuring tooth surface error of enveloping worm

Abstract

The invention discloses a method for measuring the tooth surface error of an enveloping worm. The coordinates of the enveloping worm are measured by adopting a circular arc measuring mode, thereby being more suitable for the shape characteristics of the enveloping worm; a standard worm is not needed in the detection process, thereby reducing the detection cost and eliminating the influence of themechanical error of the standard worm on the detection result; and the computer modeling technology is applied for constructing a theoretical worm mathematical model which has no error theoretically,and the mathematical model is compared with the acquired experimental data to measure the error of the worm. By selecting different mathematical models in the computer and equipping different types of measuring contacts, the method of the invention can be applied to various enveloping worms such as a planar double enveloping worm, a toroid enveloping worm with cone generatrix, a toroid envelopingworm with straight line generatrix and the like. The invention has the advantages of theoretical universality and wide application value.

Description

technical field [0001] The invention relates to a method for detecting a worm, in particular to a method for measuring the tooth surface error of a toroidal worm. Background technique [0002] Toroidal worm drive (such as planar enveloping toroidal worm drive, cone enveloping toroidal worm drive, straight profile toroidal worm drive, etc.) has the characteristics of high bearing capacity, high transmission efficiency, long life, and small average indexing error. Therefore, it is widely used in metallurgy, petrochemical, military industry, textile, mineral processing, rail transit and other industries. [0003] Worm error detection is a key procedure to ensure that the finished worm is used in mechanical equipment and operates normally, but the error detection of toroidal worm is more complicated. For example, the helical surface of the tooth part of the planar enveloping toroidal worm is a straight involute spiral surface with unequal distance variable diameter space spiral...

AI Technical Summary

Problems solved by technology

The standard worm used is a worm with high precision. Worms with different parameters need to be equipped with different standard worms, and the cost is extremely high

Moreover, this detection method transmits the error existing in the standard worm to the measured worm, although human participation is avoided, the detection result is not accurate

[0005] Other measurement methods measure the motion error and period error of the worm gear pair transmission during the meshing transmission process of the tested worm gear pair, which are used for the selection of worm gear and worm parts and the comprehensive accuracy inspection of product worm pairs, etc., and cannot be used for worm parts. Accuracy detection and analysis

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