High-accuracy ball body machining method through eccentric type curvature-variable groove

A variable curvature and eccentric technology, applied in the direction of metal processing equipment, grinding tools, manufacturing tools, etc., can solve the problems of complex processing equipment and control, low sphericity and processing efficiency, poor processing consistency, etc., to improve batch consistency , correct spherical deviation, uniform grinding effect

Inactive Publication Date: 2014-08-20
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the existing grinding/polishing processing methods for spherical parts, such as low sphericity and processing efficiency, poor processing consistency, complicated processing devices and controls, and high cost, the present invention provide

Method used

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  • High-accuracy ball body machining method through eccentric type curvature-variable groove
  • High-accuracy ball body machining method through eccentric type curvature-variable groove
  • High-accuracy ball body machining method through eccentric type curvature-variable groove

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] refer to figure 1 , a method for processing high-precision spheres with eccentric variable-curvature grooves. In the processing equipment for realizing the processing method, a groove with a variable-curvature track is opened on the lower grinding disc, and the load pressurization system acts on the ball through the upper grinding disc. blank, the variable-curvature groove and the upper grinding disc together constitute three processing contact points of the grinding ball, the centers of the rotating spindles of the upper grinding disc and the lower grinding disc are not on a straight line, and the upper and lower spindles are composed of two independent The drive mechanism (motor can be selected) drives.

[0043] By selecting the trajectory of variable curvature and the eccentricity of the main shaft of the upper grinding disc, the billet can be moved in a "variable relative orientation", so that the grinding trajectory can be evenly distributed on the surface of the ...

Embodiment 2

[0047] refer to figure 2 , a method for processing high-precision spheres with eccentric variable-curvature grooves. In the processing equipment for realizing the processing method, a groove with a variable-curvature track is opened on the lower grinding disc, and the load pressurization system acts on the ball through the upper grinding disc. Blank, the groove structure and the upper grinding disc together form three processing contact points of the grinding ball, the center of the variable curvature groove is eccentric to the center of the main shaft of the lower grinding disc, the main shafts of the upper and lower grinding discs are coaxial, and the upper and lower main shafts Driven by two independent motors.

[0048] refer to figure 2 and Figure 3-3The high-efficiency grinding / polishing device used in this embodiment includes an upper grinding disc 2, a lower grinding disc 1, a pressurizing system 3, an upper grinding disc main shaft 4, a lower grinding disc main sh...

Embodiment 3

[0058] Refer to attached figure 1 , the variable curvature groove track in this embodiment adopts Figure 3-2 The variable pitch helix shown. The remaining structures and implementation modes of this embodiment are the same as those of Embodiment 1.

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Abstract

Provided is a high-accuracy ball body machining method through an eccentric type curvature-variable groove. A machining device for achieving the method comprises an upper grinding disc, a lower grinding disc and a pressurizing system. The upper grinding disc is connected with an upper grinding disc main shaft. The lower grinding disc is connected with a lower grinding disc main shaft. The upper grinding disc main shaft and the lower grinding disc main shaft are connected with driving mechanisms respectively. The upper grinding disc is placed right above the lower grinding disc. A loading system is arranged on the upper grinding disc. The curvature-track-variable groove is formed in the lower grinding disc. The center of a curvature-variable track and the center of the grinding disc are eccentric. The pressurizing system has an effect on a ball blank through the upper grinding disc. A groove structure and the upper grinding disc form three machining contact points of a grinding ball. The ball blank to be machined moves between the upper grinding disc and the lower grinding disc in the groove during a machining process. According to the high-accuracy ball body machining method through the eccentric type curvature-variable groove, high machining accuracy, high machining efficiency and machining consistency can be achieved, the machining device is simple, and manufacturing cost is low.

Description

technical field [0001] The invention relates to a grinding / polishing processing method of a spherical part, in particular to a precision grinding / polishing processing method of a high-precision ceramic ball in a high-speed, high-precision ceramic ball bearing, and belongs to the processing technology of a high-precision spherical part. Background technique [0002] As an important component in roundness meters, gyroscopes, bearings and precision measuring instruments, precision balls are in huge demand and are widely used in precision machinery, aerospace, military defense, petrochemical and other fields. The accuracy of precision balls is the guarantee of the accuracy of roundness meters, gyroscopes, and precision measuring instruments. The accuracy of bearing balls (spherical deviation and surface roughness) directly affects the motion accuracy and life of bearings, which in turn affects the performance of instruments and equipment. The high-precision ball processing metho...

Claims

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Application Information

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IPC IPC(8): B24B37/025B24B37/34
CPCB24B37/025B24B37/16B24B37/34
Inventor 赵萍周芬芬袁巨龙李帆吕冰海邓乾发冯铭傅宣琪
Owner ZHEJIANG UNIV OF TECH
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