Grinding tool for bearing seat hole of rv reducer and positioning method of bearing seat hole
A bearing seat hole and reducer technology, which is applied to machine tools designed for grinding workpiece rotating surfaces, grinding workpiece supports, grinding/polishing equipment, etc. and other problems, to achieve the effect of improving grinding accuracy, consistent hole center distance error, and reducing the difficulty of tooth shape design
Active Publication Date: 2018-06-01
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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Problems solved by technology
[0005] The existing technology is to position the bearing seat hole of each part separately, and then process the seat hole on this basis. The center distance error and symmetry error of the two holes are guaranteed by the first positioning process. Since the three parts are not unified The processing benchmarks, and there is no same tooling for clamping, and the tolerance consistency cannot be ensured. Therefore, it is difficult to install the three parts with the crank shaft and the needle bearing, and it also introduces assembly errors, which affects the meshing characteristics between the tooth profiles. , reducing the overall motion accuracy and service life of the RV reducer
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[0031] Such as Figure 1a , 1b As shown, the shape and characteristics of each part are described as follows: Tapered shank disc 1 is a rotary part, one end is a tapered long axis, which is matched with the clamping tapered surface of the grinding machine during processing, and adjusted and fixed by the threaded hole at the end of the taper shank. There are five positioning holes in the tapered shank disc (A 0 , B 0 、C 0 、D 0 ,E 0 ), and arranged symmetrically; the inner surface of the expansion sleeve 3 is a conical surface, the outer surface is cylindrical, and there is a groove with a certain width around it. The expansion sleeve can use the conical surface for expansion and deformation to adjust the size of the outer circle; It is connected with a cylindrical surface, with a step at one end and a threaded hole at the other end. The taper is equal to the inner tapered surface of the expansion sleeve; the shape of the cylindrical pin 4 is connected by two cylindrical sur...
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The invention provides an RV reducer bearing base hole grinding tool and a positioning method for bearing base holes. The tool comprises a taper shank disc, a cylindrical pin and fixing devices. The taper shank disc is a rotary part, a long taper shank is located at one end of the taper shank disc, and during machining, the taper shank disc is matched with a grinder clamping tapered face, and a threaded hole in the tail end of the long taper shank is used for regulation and fixation; a disc body is located at the other end of the taper shank disc and provided with five positioning holes which are sequentially marked as D0, B0, A0, C0 and E0, and the five positioning holes are symmetrically formed with respect to the A0; and the B0 or the C0 is a mounting positioning hole for a workpiece to be ground, and the bearing seat holes of the workpiece to be ground coincide with the D0 and the A0 or coincide with the E0 and the A0. According to the shape, the cylindrical pin is formed by connecting two cylindrical faces which are different in diameter. The cylindrical pin is used for connecting and positioning a mounting hole of the workpiece to be ground and the B0 or the C0 of the grinding tool. The fixing devices are used for fixing the workpiece to be ground and the grinding tool.
Description
technical field [0001] The invention relates to the field of processing key components of a robot RV reducer, in particular to a method for positioning a bearing seat hole of an RV reducer and a grinding device. Background technique [0002] RV reducer is widely used in robots, CNC lathe spindle indexing, factory automation, flexible manufacturing units, precision servo due to its small size, light weight, high rigidity, stable transmission, high motion precision, and strong impact resistance Transmission and other fields. [0003] The RV reducer for robots has high requirements for motion accuracy, gap backlash, stiffness and other indicators. Generally, it is controlled at about 1 to 1.5 minutes to ensure that the end of the robot accurately reaches the specified position. Therefore, the processing and processing of various parts of the RV reducer The installation error requirements are extremely stringent. [0004] The RV reducer is mainly composed of core parts such as...
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IPC IPC(8): B24B41/06B24B5/48
CPCB24B5/48B24B41/06
Inventor 宋洪舟徐强郑继贵侍威王水铭王春明
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS