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RV speed reducer dual-camshaft finish machining clamp and method

A technology of double camshafts and reducers, which is applied to manufacturing tools, metal processing equipment, grinding workpiece supports, etc., can solve the problems of high processing cost, increased manufacturing cost of reducer, low efficiency, etc., and achieves improved uniformity and practicality. Effective processing method, high dimensional accuracy effect

Active Publication Date: 2019-04-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, enterprises mainly use high-precision grinding machines to process double camshafts. The processing cost is high and the efficiency is low, which greatly increases the manufacturing cost of the reducer.

Method used

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  • RV speed reducer dual-camshaft finish machining clamp and method
  • RV speed reducer dual-camshaft finish machining clamp and method
  • RV speed reducer dual-camshaft finish machining clamp and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] like figure 1 As shown, a double camshaft finishing fixture for an RV reducer includes a three-jaw chuck, and the three-jaw chuck includes a fixture base 1 and three jaws 2 that are synchronously movable on the fixture base 1 At least one claw 2 is provided with a threaded hole along the radial direction of the clamp base 1, and a positioning pin 3 threadedly fitted is provided in the threaded hole.

[0030] The fixture of this embodiment can realize the clamping and positioning of the double camshafts of the RV reducer at the same time by applying pretightening force; wherein the cooperation of the positioning pin 3 and the spline groove of the double camshafts can realize the positioning operation of the teeth, and the positioning The pin 3 cooperates with the threaded hole of the claw 2, and through the cooperation of the positioning pin 3 and the spline groove of the double camshaft, the remote point of the double cam needs to be distributed at 180° and is precisely...

Embodiment 2

[0033] A method for finishing double camshafts of an RV reducer using a fixture as described, comprising the steps of:

[0034] (1) Mark the spline tooth top corresponding to the cam remote point of the double camshaft 4 to be processed, as shown in the figure figure 2 black spots in

[0035] (2) Vertically place the tooling mandrel in the middle of the three jaws 2. The tooling mandrel is in point-to-face contact with the arc surface of the front end of the jaws 2, and then locked with the positioning pin 3 to realize the coordinate grinding of the three cards. The machining of the arc surface of the front end of the claw 2, after processing, measure the runout of the end face of the inner hole to ensure the roundness of the arc surface of the front end of the three jaws 2 and the coaxiality with the double camshaft 4.

[0036] (3) Put the shaft of the double camshaft 4 to be processed near the end of the spline vertically into the jaw 2 and clamp it. During the putting pro...

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Abstract

The invention relates to an RV speed reducer dual-camshaft finish machining clamp. The RV speed reducer dual-camshaft finish machining clamp comprises a three-jaw chuck, the three-jaw chuck comprisesa clamp base, and three clamping jaws which are synchronously and movably arranged on the clamp base; a thread hole is formed in at least one clamping jaw in the radial direction of the clamp base inthe radial direction, and a positioning pin is arranged in each thread hole in a thread fit manner. The invention further discloses a machining method of the RV speed reducer dual-camshaft finish machining clamp. The three-soft-claw-positioning in clamp is arranged on the chuck, through fit of a positioning pin and a dual-camshaft spline groove, tooth alignment positioning operation is achieved, amachined RV speed reducer dual-camshaft improves the load uniformity and rotation stability, the size precision is high, surface roughness is low, the machining efficiency of the dual-camshaft is obviously improved, and the machining cost of the dual-camshaft is reduced.

Description

technical field [0001] The invention belongs to the field of camshaft fixture design, in particular to a high-efficiency and simple finishing method and fixture for double camshafts. Background technique [0002] In recent years, with the rapid development of industrial robots, the demand for high-precision RV reducers for industrial robots has increased significantly, and almost all joints of heavy-duty robots need to use RV reducers. As the joint reducer of industrial robots, the RV reducer has a major impact on the transmission accuracy, carrying capacity and manufacturing cost of industrial robots. The RV reducer has much higher fatigue strength, stiffness and life than the harmonic drive commonly used in robots, and the backlash accuracy is stable, while the motion accuracy of the harmonic reducer will decrease significantly with the increase of use time. Therefore, on average, each robot uses an average of 3-5 RV reducers. In 2013, the world's robot sales volume was 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B41/06B24B19/12
CPCB24B19/12B24B41/06Y02P70/10
Inventor 万珍平王炜曾繁铿董柳杰陆龙生汤勇
Owner SOUTH CHINA UNIV OF TECH