A processing method for improving the wear resistance of the second-stage transmission unit of the rv reducer
A transmission unit, wear-resistant strength technology, applied in the field of industrial robot precision reducer processing, can solve the problem of difficult to meet the working conditions of the robot, the surface hardness and wear resistance and stability of the workpiece cannot meet the stable and safe operation and service life of the industrial robot. Low and other problems, to achieve the effect of increasing hardness, improving stability, and improving wear resistance
Inactive Publication Date: 2019-05-21
沈阳新松智能驱动有限公司
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Problems solved by technology
[0004] At present, the second-stage transmission unit of the RV reducer is difficult to meet the working conditions of the robot. Its processing still adopts the traditional CNC machining center and grinding machine processing procedures. The hardness, wear resistance and stability of the workpiece surface cannot meet the smooth and safe operation of industrial robots. , the overall service life is low
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[0019] The RV reducer is composed of the first-stage planetary transmission and the second-stage cycloidal transmission. The main components include input shaft gear shaft 1, crank shaft 2, involute planetary gear 3, cycloidal gear 4, pin teeth 5. The planet carrier 6 and the pin gear housing 7, etc.; wherein the second-stage transmission unit includes the cycloidal wheel 4, the pin teeth 5, and the pin gear housing 7, and the precision machining steps of the cycloidal wheel 4 and the pin gear housing 7 are as follows:
[0020] (1) Rough machining: rough machining the outer contour surface 4-1 of the cycloidal wheel 4, the bearing inner hole surface 4-2, and the bearing support holes 7-2 at both ends of the pin gear housing 7, while ensuring that the pin gear housing 7 is two The coaxiality of the bearing support hole 7-2 at the end, the grinding amount, and a certain finishing allowance are left; the 40 semicircular holes 7-1 on the inner circle of the pin gear housing 7 are f...
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The invention relates to a machining method for improving the abrasive resistance of a second-stage transmission unit of an RV reducer. The machining method includes the main steps that rough machining is conducted on outer contour surfaces and bearing inner hole surfaces of cycloidal gears, bearing supporting holes at both ends of a pin wheel housing, and forty semi-circular holeson the inner circle of the pin wheel housing; the roughness of the machinedfaces reaches Ra<=3.2; tooth profiles of two cycloidal gears are completely consistent, and precision vibration grinding is conducted; vibration grinding is conducted on fortysemi-circular holesurfaces of the pin wheel housing and bearing supporting holesurfaces at both ends; the roughness of the machined faces reaches Ra<=0.4. The machining method has the advantages that dimensional accuracy, geometric precision, surface quality, material uniformity and residual stress release of the second-stage transmission unit can be ensured, stress concentration on the surface does not occur, stability, surface hardness and abrasive resistance of materials are improved, the hardness of machinedsurfaces of workpieces is improved by 20%, and the abrasive resistanceis improved by 50%.
Description
technical field [0001] The invention belongs to the technical field of precision reducer processing for industrial robots, and in particular relates to a processing method for improving the wear resistance strength of a second-stage transmission unit of an RV reducer. Background technique [0002] RV transmission is a newly emerging transmission. It is developed on the basis of traditional pendulum planetary transmission. It not only overcomes the shortcomings of general needle pendulum transmission, but also has the advantages of small size, light weight, large transmission ratio range and long life. , stable precision, high efficiency, stable transmission and a series of advantages. Foreign countries are very mature in the design and production of precision reducers. Japan, Germany, and Denmark are in a leading position in technology. For high-precision robot RV reducers, Japan’s Nabtesco has an absolute leading advantage, accounting for 75% of the global robot industry. ...
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IPC IPC(8): B23P15/14F16H55/08
CPCB23P15/14F16H55/08
Inventor 蔡宇王文涛甄凤博左莹莹康宗涛
Owner 沈阳新松智能驱动有限公司