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Bearing outside diameter grinding and processing method utilizing noncentral excircle through feed grinding

A grinding and bearing technology, which is applied in the field of centerless outer circle through-grinding bearing outer diameter grinding, can solve the problems that the machining accuracy can only reach the ordinary level, and the center height of the workpiece is not determined and grasped, so as to improve the service life and simplify the operation Convenience and the effect of ensuring processing accuracy

Inactive Publication Date: 2004-11-10
WAFANGDIAN BEARING GRP CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

Although the centerless cylindrical grinding bearing outer diameter grinding method usually used at present adjusts the center height of the workpiece, the best solution for adjusting the center height of the workpiece has never been determined and mastered. Therefore, the machining accuracy can generally only reach Ordinary

Method used

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  • Bearing outside diameter grinding and processing method utilizing noncentral excircle through feed grinding

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Embodiment Construction

[0018] Use a centerless grinder to process workpieces with an outer diameter of Φ80-120mm (ordinary grade)

[0019] Ellipse VDP≤5μm

[0020] Wav≤2.5μm

[0021] Taper VDMP≤5μm

[0022] Circular deviation Δcir≤6μm(K=2)

[0023] The center height 5 of each grinder is determined, which is the height from the grinding surface 4 to the connecting line between the grinding wheel 2 and the guide wheel 1. At the same time, the center height of the grinder 5 = the radius of the workpiece + the height of the support plate 7 of the grinder. To adjust the center height 6 of the workpiece, as long as the center height 5 of the grinder is adjusted, the purpose of adjusting the center height 6 of the workpiece can be achieved, and the operation is simple and convenient.

[0024] The operation method is as follows:

[0025] (1) When the workpiece 3 is from the heat treatment quenching process to the outer diameter grinding process, the center height 6 of the workpiece 3 should be adjusted first, a...

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Abstract

The invention relates to an external diameter milling processing method of coreless through-external circule milling bearing, continuously adjusting the center height of the workpiece to heighten milling precision and productivity. Its technical project: (1) external diameter milling procedure: taking the center height of the mill bed as reference to adjust the center height of a workpiece to 80mm, roughly milling twice-thrice up to the roughly milling size and eliminating circular error; (2) reprocessing workpiece: taking the center height of the mill bed to adjust that of the workpiece to 3-7 mm, the elliptical VDP is controlled in 2 mum and waviness controlled in 1.5mum; (3) after processed by the above two procedures, adjusting the center height of the workpiece again to 80mm with that of the mill bed as reference for milling, the diameter of the workpiece is milled off by 10mum, the 'multi-angle ' are removed by 25mum, and circular error is controlled within 1.5mum; adjusting the center height of the workpiece with the external diameter less than 80mm to 40mm. It ensures processing precision, prolongs service life of finished bearings and heightens the whole quality of bearing products.

Description

Technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to a method for grinding and processing the outer diameter of a centerless external cylindrical through-grinding bearing. Background technique [0002] The manufacture of bearing rings has to go through a series of processing procedures such as material preparation→forging→turning→heat treatment→grinding. The last process is grinding. Each surface of the grinding process, national standards, and design process regulations have strict accuracy requirements. The size and geometric accuracy of the processed surface of the previous process will directly affect the dimensional accuracy, geometric accuracy and product quality of the next process. It directly affects the service life of finished bearings. The shape and position errors of each surface of the bearing ring in the grinding process and their mutual influence and mutual restriction. In the process of grinding the bearing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B5/28
Inventor 王吉祯王路顺康宝顺赵明良刘魁元王毅
Owner WAFANGDIAN BEARING GRP CO LTD
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