Error detection device for hourglass worm

Abstract

The invention discloses an error detection device for a hourglass worm, comprising a body, a spindle unit and a measuring unit, wherein the spindle unit comprises a spindle servo motor, a spindle, a workpiece fixture to be measured and a tailstock; the spindle servo motor drives the spindle to rotate; the workpiece fixture to be measured is fixedly matched with the spindle in the circumferential direction; the measuring unit comprises a base, a rotating table, a measuring contact, a data acquisition system and a computer; the rotating table is arranged on the base in the manner of rotating around a z-axis; and the measuring contact is arranged on the rotating table in the manner of adjustable position along an x-axis, a y-axis and the z-axis and can rotate around an axis parallel to the z-axis. The coordinate measurement can be carried out for the hourglass worm by adopting the arc measuring method, the line by line measurement can be carried out, the efficiency is higher than that of the point by point measurement in the prior art, the influences of subjectivity of human intervention and mechanical error of the standard worm on the detection results are avoided, as different types of measuring contacts are adopted, various errors of the worm can be accurately detected, and the universality is strong.

Description

Technical field [0001] The invention relates to a worm detection device, in particular to a toroidal worm error detection device. Background technique [0002] Worm drive is a commonly used transmission type in mechanical equipment. It has the characteristics of wide transmission ratio range (usually the first-level transmission ratio can reach 5-100), compact structure, small volume, smooth movement and low noise. Toroidal worm drive (such as plane-enveloped toroidal worm drive, cone-enclosed toroidal worm drive, straight-profile toroidal worm drive, etc.) has higher carrying capacity, transmission efficiency, long life, and small average indexing error. Features, so it is widely used. [0003] Worm error detection is a key program to ensure that the finished worm is used in mechanical equipment and operates normally. The error detection of worms is more complicated. For example, the helix surface of a plane-enveloped toroidal worm is a straight spiral of unequal pitch variable d...

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] In addition, the instrument measures the motion error and period error of the worm pair transmission during the meshing transmission process of the measured worm pair, which is used for the selection of worm gears and worm parts and the comprehensive accuracy inspection of product worm pairs, etc. It cannot be used for the accuracy of worm parts Detection and Analysis

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