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A kind of cylindrical grinding processing method

A processing method and cylindrical grinding technology, applied in the field of grinding processing, can solve the problems of long diagnosis time, complexity, large uncertainty, etc., and achieve good surface integrity, stable grinding quality, and elimination of grinding vibration. Effect

Active Publication Date: 2022-02-08
ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the implementation of these related measures is relatively complicated, not only the diagnosis time is long, the efficiency is low, but also there is a large uncertainty, it is not suitable for the application of machine tool operators, and the engineering effect is not good, etc.
[0004] The Chinese invention patent "A Method for Cylindrical Grinding of Cross Shaft Journal" (publication number: CN103522132B) discloses a machining method for cylindrical grinding of cross shaft journal, which includes the following steps: design and optimize variables, and use the cross shaft workpiece Rotation linear velocity vw and grinding wheel lateral feed fr are optimized variables; the objective function is to take the least time spent in grinding a single cross axis as the objective function, where the objective function is the rotational linear speed of the cross axis workpiece, fr is the grinding wheel lateral feed , k is the correction coefficient; according to the constraint conditions, the optimal cross-axis workpiece rotation speed vw and grinding wheel lateral feed rate fr are obtained; according to the obtained cross-axis workpiece rotation speed vw and grinding wheel lateral feed rate fr, the plunge grinding method is adopted Carry out the cylindrical grinding of the cross shaft journal; the invention focuses on the optimization goal of the highest efficiency of the cross shaft journal cylindrical grinding, and the optimization mathematical model with the cross shaft rotation line speed and lateral feed as design variables, for The selection of the best grinding process parameters provides a theoretical basis for the cylindrical grinding of the cross shaft journal, and it is impossible to eliminate or improve the grinding vibration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] Example 1: External cylindrical plunge grinding

[0030] The cylindrical grinding processing method comprises the following steps:

[0031] 1) Grinder refinement

[0032] Check that the grinding machine runs smoothly and the sliding pair has no creeping phenomenon; the radial runout of the grinding wheel spindle is 1.5 μm, the axial movement is 1.0 μm, and the static stiffness of the grinding wheel spindle is ≤0.5 μm / 10kg.

[0033] 2) Homogeneous grinding wheel

[0034] The thickness deviation of both ends of the grinding wheel is 0.16mm, the coaxiality deviation of the inner and outer circles of the grinding wheel is 0.18mm, the hardness deviation of the grinding wheel is 0.2mm, and the unbalanced mass of the grinding wheel is 17g to ensure that the inner quality of the grinding wheel is uniform.

[0035] 3) Grinding wheel installation and adjustment

[0036] After the grinding wheel is installed, centered and tightened, the radial runout of the grinding wheel is 0....

example 2

[0044] Example 2, cylindrical longitudinal grinding:

[0045] The cylindrical grinding processing method comprises the following steps:

[0046] 1) Grinder refinement

[0047] Check that the grinding machine runs smoothly and the sliding pair has no creeping phenomenon; the radial runout of the grinding wheel spindle is 1.5 μm, the axial movement is 1.0 μm, and the static stiffness of the grinding wheel spindle is 200 N / μm.

[0048] 2) Homogeneous grinding wheel

[0049] The thickness deviation of both ends of the grinding wheel is 0.16mm, the coaxiality deviation of the inner and outer circles of the grinding wheel is 0.18mm, the hardness deviation of the grinding wheel is 0.2mm, and the unbalanced mass of the grinding wheel is 18g.

[0050] 3) Grinding wheel installation and adjustment

[0051] After the grinding wheel is installed, centered and tightened, the radial runout of the grinding wheel is 0.36mm (eccentricity 0.18mm); furthermore, after the rough trimming and ch...

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PUM

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Abstract

A processing method of cylindrical grinding, by adopting the settings of grinding machine refinement, homogeneous grinding wheel, grinding wheel installation and adjustment, grinding wheel dressing and refining, feed grinding and dwell grinding, the specific process of cylindrical grinding is limited The grinding process eliminates the grinding vibration. After grinding, the grinding surface has no defects such as vibration marks, burns, residual stress, cracks, etc., and the surface integrity is good. At the same time, this process method has stable grinding quality, good repeatability, and is convenient and practical. Applications can be promoted.

Description

technical field [0001] The invention belongs to the technical field of grinding processing, and in particular relates to a cylindrical grinding processing method. Background technique [0002] Grinding is a processing technology that uses a high-speed rotating grinding wheel to remove excess material on the workpiece. It can meet the processing needs of various materials and various mechanical parts, and plays a key role in the surface quality of parts. Therefore, it is often used as the last process of mechanical processing. . However, in the process of cylindrical grinding, system instability, especially grinding vibration, often occurs, which not only affects the surface quality of the workpiece (roughness, vibration lines, burns, cracks, etc.), machining accuracy, accelerates the wear of the grinding wheel, and reduces the life of the grinding wheel. Moreover, it will accelerate the aging of the grinding machine and increase unsafe hidden dangers. [0003] In order to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B5/04B24B1/00B24B55/06
CPCB24B5/04B24B1/00B24B55/06
Inventor 冯克明赵金坠邢波
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD