Deformation control device and method in ultrasonic rolling process of RV reducer cycloidal gear

Abstract

The invention discloses a deformation control device and method in the ultrasonic rolling process of an RV reducer cycloidal gear. The device comprises a clamp assembly, an ultrasonic rolling cutter and a signal transmission line, the clamp assembly comprises a positioning element, a clamping block, a bearing seat, a permanent magnet attraction block base, a contour sensor and a controller, and a rolling bearing is arranged in the bearing seat; the bearing seat is connected to the permanent magnet attraction block base in a height-adjustable manner, the first end of the positioning element is fixedly connected with the rolling bearing and penetrates through the bearing seat, the second end of the positioning element is detachably connected with the clamping block, the contour sensor and the controller are both arranged on the bearing seat, and the contour sensor is connected with the controller; and an air pressure controller is arranged on the ultrasonic rolling cutter and connected with the controller through the signal transmission line. According to the deformation control device , the hardness and strength of gear teeth can be remarkably improved, the abrasion resistance and corrosion resistance of the surfaces of the gear teeth are improved, the machining quality and machining efficiency are improved, and the service life of the cycloidal gear is prolonged.

Description

technical field [0001] The invention relates to a deformation control device and method in the ultrasonic rolling process of a cycloidal wheel of an RV reducer, and belongs to the technical field of RV reducer processing and manufacturing. Background technique [0002] The cycloidal wheel is the core component of the RV reducer. The tooth profile of the gear teeth is relatively complicated, and the processing technology requirements are high. As the RV reducer continues to develop towards high precision, high power, and high life, the bearing capacity between the contact surface of the cycloidal wheel and the needle roller continues to increase, which further increases the contact stress between the gear tooth contact pair, and the contact The magnitude of the stress is a key factor affecting the wear degree and fatigue life of the contact pair. Ultrasonic rolling relies on the static pressure and ultrasonic mechanical vibration applied to the processing tool head to deform...

AI Technical Summary

Problems solved by technology

[0003] The first purpose of the present invention is to solve the technical problems of the contact pair of the cycloidal wheel and the needle roller in the RV reducer, such as the wear of the contact pair, fatigue failure, and the easy deformation of the surface during the ultrasonic rolling process. , provides a deformation control device in the ultrasonic rolling process of the RV reducer cycloidal wheel. The device has a reasonable structure design, good clamping stability, and simple use. By setting the profile sensor and controller on the clamp assembly, And cooperate with the air pressure controller on the ultrasonic rolling tool to roll multiple workpieces through one clamping. The safety contour parameters of each section of the workpiece can be set in advance before processing, and the contour sensor can be used in real time during processing. Monitor the contour parameters of the processed workpiece, use the controller to control the air pressure on the ultrasonic rolling tool to control the rolling force, and then effectively control the deformation of the workpiece during the rolling process, thereby significantly increasing the hardness and strength of the gear teeth and improving their The wear resistance and corrosion resistance of the surface improve the processing quality and efficiency, and prolong the service life of the cycloidal wheel

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