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Precision ultra-precision machining method for forming grinding

A technology of ultra-precision machining and forming grinding, applied in ultra-finishing machines, metal processing equipment, manufacturing tools, etc., it can solve the problems of difficulty in ensuring the consistency of machining quality, poor inspection and surface quality, and achieve high-quality Consistency, high quality and consistent effect

Inactive Publication Date: 2019-09-20
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of off-line modification, trimming, sharpening, detection and processing of poor surface quality, and difficulty in ensuring the consistency of processing quality in traditional processing, and can realize precision ultra-precision forming grinding processing under mass production conditions

Method used

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  • Precision ultra-precision machining method for forming grinding
  • Precision ultra-precision machining method for forming grinding
  • Precision ultra-precision machining method for forming grinding

Examples

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Effect test

example 1

[0032] Example 1: Example of forming and grinding the inner raceway of the outer ring of the bearing

[0033] ⑴Technical background

[0034] The processing technology used for the inner raceway of the traditional bearing outer ring is ultra-precision grinding with fine-grained whetstone after grinding with a shaped grinding wheel. Although the whetstone precision grinding process can significantly improve the surface quality and accuracy of the workpiece, it still has low processing efficiency and surface quality. Problems such as burns, cracks, and poor consistency of raceway dimensions. In the finishing processing of large and medium-sized bearing raceways, due to the large processing area, high roughness of the original surface, and large processing allowance, the mold blockage is more serious. It is urgent to improve the processing accuracy and processing quality of the surface of the bearing raceway, and to innovate and develop a new processing method for the inner racew...

example 2

[0041] Example 2: "Precise progressive" grinding removal method to process bearing manganese steel to ensure the consistency of processing quality optimization control experiment

[0042] (1) Experimental conditions:

[0043]

[0044] According to the ELID grinding principle and removal mechanism and the "precise progressive" processing method, 10 bearing manganese steel samples were used to conduct the "precise progressive" surface processing quality consistency control optimization experiment.

[0045] (2) Experimental method

[0046] Such as image 3 As shown in the principle of ELID grinding and removal, the ELID grinding experiment of 10 bearing manganese steel samples is carried out on the basis of the existing conditions, and the manganese steel samples are placed on the horizontal test bench. 2500r / min, feed rate 5m / min, magnification 50%, electrolysis voltage 60V, electrolysis gap 0.4-1mm, choose w10 particle size iron-based bond grinding wheel for grinding remov...

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Abstract

The invention discloses a precision ultra-precision machining method for forming grinding. Through the method, the precision progressive type grinding machining technology mode, including in-place shape correcting, in-place trimming, online electrolytic sharpening and online detection, of a metal-bonded grinding wheel is achieved. The method is characterized in that graphite wheel precision turning forming is achieved in place; deionized water serves as a medium, and grinding wheel electric spark precision forming and shape correcting are achieved; through a diamond roller opposite-grinding trimming method, in-place trimming of the grinding wheel is achieved, and a hard layer is removed; online electrolytic sharpening is conducted, and it is achieved that the good sharpness of the grinding wheel is kept all the time in the grinding and removing processes; online detection is conducted, and dimensional precision detection of a machined part is achieved; and according to the grinding wheel particle size, the concentration and progressive magnitude between different procedures, precision progressive type precision forming grinding machining is achieved. Through the precision ultra-precision machining method, the problems that a traditional machining mode is poor in offline shape correcting, trimming, sharpening, detection and machined surface quality, and the machining quality consistency is difficult to ensure are solved, and precision ultra-precision forming grinding machining can be achieved under the batch production conduction.

Description

technical field [0001] The invention relates to a precision ultra-precision machining method for forming grinding, which belongs to the field of precision ultra-precision machining. Background technique [0002] Forming abrasives in traditional processing have complicated and complicated processing procedures, and each process will accumulate processing and installation errors. In addition, due to fatal defects such as large size changes and serious wear and tear of the abrasives themselves, the processing efficiency is low, the surface quality is poor, and the processing quality is low. Consistency is difficult to guarantee. Surface quality and processing quality consistency will directly affect the performance and service life of parts. The metal bond grinding wheel has the advantages of high hardness, large grinding ratio, good shape retention, and not easy to wear. [0003] At present, the traditional dressing method is difficult for its dressing process. Most of the m...

Claims

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Application Information

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IPC IPC(8): B24B35/00
CPCB24B35/00
Inventor 关佳亮刘书君杨洋张龙月
Owner BEIJING UNIV OF TECH
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