Device and method for efficiently polishing and processing high-precision balls in cluster magneto-rheological mode

A magnetorheological and high-precision technology, which is applied in the direction of surface polishing machine tools, metal processing equipment, grinding/polishing equipment, etc., can solve the problems of poor processing consistency, high processing cost, and sphericity limitation, and achieve stable shape accuracy , high processing efficiency and good consistency

Pending Publication Date: 2018-04-06
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method uses many power sources for processing devices, complex structures and control systems, high requirements for manufacturing and assembly precision, and high processing costs.
In addition, there is also a ceramic ball magnetic levitation grinding method, which is mainly characterized by the use of magnetic fluid technology to achieve high-efficiency grinding of the ball blank. In addition to the different pressurization methods for the ball blank, the grinding movement method is the same as the traditional V-shaped groove grinding proces...

Method used

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  • Device and method for efficiently polishing and processing high-precision balls in cluster magneto-rheological mode
  • Device and method for efficiently polishing and processing high-precision balls in cluster magneto-rheological mode
  • Device and method for efficiently polishing and processing high-precision balls in cluster magneto-rheological mode

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as Figure 1-9As shown, a kind of ceramic ball polishing processing device based on the magneto-rheological effect of the present invention includes a lower polishing disk revolution mechanism, a cluster magnetic pole eccentric rotation mechanism, an upper polishing disk and a pressure regulating mechanism, and the lower polishing disk revolution mechanism includes a bottom plate ( 1), Base (2), Thrust Ball Bearing (30), Thrust Ball Bearing Housing (31), Hollow Shaft (33), Hollow Shaft Bearing (32), Pinion Shaft Mounting Plate (10), Support Ring (28) , the lower polishing disc (16) with V-shaped groove, the hollow shaft motor (4), the timing belt (7), the hollow shaft pulley (6) parts, wherein the hollow shaft motor (4) is fixedly installed on the base plate (1) , the hollow shaft (33) and the hollow shaft bearing (32) are fixedly installed in the large center hole on the base (2), and the lower polishing disc (16) is connected to the pinion shaft mounting plate (1...

Embodiment 2

[0067] The specific structure of the device is the same as that of the specific embodiment 1.

[0068] Such as Figure 1-9 As shown, a device and method for high-efficiency cluster magnetorheological polishing and processing of high-precision balls includes the following steps:

[0069] 1) According to the characteristics of the processed ceramic balls, select a permanent magnet (15) with a suitable diameter and magnetic field strength and install it above the pinion shaft (13) in the revolution mechanism of the lower polishing disc, and adjust the angle of the eccentricity adjustment ring (14) according to requirements , so that the rotation eccentricity of each magnet is the same.

[0070] 2) Fix the revolution mechanism of the lower polishing disc and its lower parts on the mobile worktable of the CNC milling machine through nuts, and connect the upper polishing disc and the pressure regulating device to the spindle of the CNC milling machine through the upper flange.

[...

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Abstract

The invention discloses a device and a method for efficiently polishing and processing high-precision balls in a cluster magneto-rheological mode. The device comprises upper and lower polishing discs,and a magnetic field generator. Under action of magnetic fields, viscosity of magneto-rheological fluid which enters V-shaped slots of the polishing discs is increased within extremely short time, and a magnetic chain string clamps abrasive particles to form a flexible polishing pad; ceramic balls are coated by the flexible polishing pad in the V-shaped slots; and along with motion (auto-rotationduring revolution) of the polishing discs, the surfaces of the ceramic balls are polished by the abrasive particles in the magneto-rheological flexible polishing pad. The device does not need to adopt a circulating device for regenerating the magneto-rheological fluid, so that the whole process from rough polishing to fine polishing of the ball bodies can be realized through once clamping; and anobtained workpeice is good in surface consistency, is stable in shape precision, is high in processing efficiency, and is free of surface and sub-surface damages; and moreover, the device is low in cost, and is suitable for high-efficiency ultra-smooth uniform grinding and polishing of high-precision ceramic balls in ceramic ball bearings.

Description

technical field [0001] The present invention relates to a spherical part polishing device and polishing method, in particular to a high-speed, high-precision ceramic ball bearing cluster magnetorheological high-efficiency polishing device and method for processing high-precision balls. The magneto-rheological effect further improves the surface quality of ceramic balls, and belongs to the technical field of ultra-precision processing. Background technique [0002] According to the current increase in the spindle speed, the requirements for the bearing are also greatly improved. Hot isostatic pressed silicon nitride (HIPSN) is considered to be the material of choice for manufacturing high-speed, high-temperature precision bearing balls such as aircraft engines, high-speed spindles and precision machine tools. Compared with traditional steel balls, it has the characteristics of lower density, higher hardness, larger elastic modulus (better rigidity), smaller thermal expansion...

Claims

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Application Information

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IPC IPC(8): B24B1/00B24B29/02
CPCB24B1/005B24B29/02
Inventor 肖晓兰阎秋生路家斌熊强
Owner GUANGDONG UNIV OF TECH
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