High-precision detachable worm gear and worm drive mechanism

Abstract

A high-accuracy detachable worm gear drive mechanism is characterized in that an elastic bearing seat is fixedly assembled on a housing, an elastic bearing is connected to the elastic bearing seat through a spring, and a worm penetrates through a bearing hole formed in the elastic bearing. An orientation seat is fixedly assembled on the housing, the working outer surface of the orientation seat is an outer arc-shaped face, and a long hole is formed in the orientation seat. A detaching seat, a compression spring, a deflection positioning ring, a direction deflection ring and a drive ring are sequentially installed at the right end of the worm sequentially penetrates in a penetrating mode. The working outer surface corresponding to the orientation seat, of the detaching seat, is an inner arc-shaped face. The deflection positioning ring is provided with an outer conical face, and the direction deflection ring is provided with an inner conical face matched with the outer conical face. The drive ring is fixed to the worm by using a pin, two penetrating holes are formed in a disc body of the drive ring, the drive ring is sleeved with a deflection detaching button, and two contactors are arranged at the inner end of the deflection detaching button and penetrate through the penetrating holes to be in contact with the deflection positioning ring. The high-accuracy detachable worm gear drive mechanism is high in drive accuracy, capable of simultaneously measuring an absolute value and a relative value of an angle, flexible to detach, simple in structure and convenient to operate.

Description

Technical field [0001] The invention relates to a mechanical device, in particular to a high-precision releasable worm gear transmission mechanism, which can perform precise transmission and angle measurement, and can quickly rotate and position after being released. [0002] technical background [0003] In mechanical transmission equipment, gear transmission is a typical transmission mechanism, among which worm gear transmission mechanism has the characteristics of large transmission ratio and self-locking, which is widely used in the precision transmission measurement industry. Precise measurement requires high transmission accuracy and requires both positive and negative rotation. Therefore, the center distance, wheel tooth backlash, etc. have a greater impact on the return error, which will greatly reduce the transmission accuracy of the worm gear, thereby reducing the measurement accuracy of the instrument. The processing requirements are relatively high, and it is difficult ...

AI Technical Summary

Problems solved by technology

Precision measurement requires high transmission accuracy, and requires both forward and reverse rotation. Therefore, the center distance and backlash of the gear teeth have a greater impact on the return error, which will greatly reduce the transmission accuracy of the worm gear, thereby reducing the measurement accuracy of the instrument. The processing requirements are relatively high, and it is difficult for general processing equipment to guarantee the requirements of precision transmission, and the processing cost of precision processing is relatively high, which increases the production cost of products and reduces the market competitiveness of enterprises

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