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Device and method for finishing and processing surface of viscoelastic and magnetic abrasive tool

A magnetic grinding tool and smooth finishing technology, which is applied in the direction of superfinishing machines, metal processing equipment, manufacturing tools, etc., can solve the limitations of comprehensive improvement of surface quality, low utilization rate and repeated utilization rate, equipment and fixture structure Complexity and other problems, to achieve the effect of improving physical and mechanical properties, high utilization rate and repeated utilization rate, simple and practical processing equipment and process

Inactive Publication Date: 2012-10-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The quality of magnetic abrasive finishing is good, but the magnetic field generating device is complex, and it is difficult for granular magnetic abrasives to concentrate on the processed area of ​​complex surfaces. The utilization rate and reuse rate are low, and the cost of magnetic abrasives is high, which greatly limits its industry application
Squeeze honing is to process through constant friction transmitted to the surface of the workpiece by a certain pressure. Although the abrasive used is semi-solid and easy to adapt to the surface shape, the structure of the equipment and fixture is complicated, the cost of the abrasive is high, and the dead angle of the channel and the blind channel Inside, the fluid cannot flow, and the processing effect is poor
The finishing process of liquid magnetic abrasive tool is to use the magnetic field to make the phase change of the liquid magnetic abrasive tool to form a certain force, and realize the processing through relative motion. It is difficult to process complex surfaces, and the stability of the abrasive tool is poor and the process cost is high.
The ultrasonic processing method used for finishing processing is to rely on the high-intensity vibration generated by the ultrasonic horn to directly excite the workpiece and the liquid-solid two-phase fluid that is forced to flow on the surface of the complex workpiece. , has great limitations on the comprehensive improvement of surface quality

Method used

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  • Device and method for finishing and processing surface of viscoelastic and magnetic abrasive tool
  • Device and method for finishing and processing surface of viscoelastic and magnetic abrasive tool
  • Device and method for finishing and processing surface of viscoelastic and magnetic abrasive tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0043] Slender hole processing, the processing parameters are as described in Table 1:

[0044] Table 1 Machining parameters of slender holes

[0045]

[0046] value

412

10

240

20

YL12

32

400

5

[0047] Implementation Effect:

[0048] attached Figure 4 It is a photo before processing, it can be seen that the inner surface of workpiece 2 is rough and dull; Figure 5 It is a photo after processing. It can be seen that the surface of workpiece 2 after processing is smooth and bright as a whole, with a mirror effect, burrs are removed, and the processing effect is obvious. After testing, the surface roughness Ra value of the workpiece dropped from 2.39 μm to 0.25 μm, which decreased by about 3 levels.

Embodiment approach 2

[0050] Groove parts processing, processing parameters are shown in Table 2:

[0051] Table 2 Processing parameters of grooved parts

[0052]

[0053] Implementation Effect:

[0054] attached Image 6 It is a photo before processing. Before processing, the side and bottom of the groove have obvious knife marks, the surface is rough, and is anisotropic. The burrs at both ends of the groove are relatively obvious, and there is a feeling of cutting hands; attached Figure 7 This is the photo after processing, the surface quality of the side and bottom of the groove after processing is greatly improved, the surface is smooth and bright as a whole, the burrs on both sides of the groove are obviously removed, the edges are rounded, and the surface shows an isotropic trend.

Embodiment approach 3

[0056] For the processing of blind hole parts, the processing parameters are shown in Table 3:

[0057] Table 3 Processing parameters of blind hole parts

[0058]

[0059] Implementation Effect:

[0060] attached Figure 8 It is a photo before processing. Before processing, the bottom surface of the blind hole has obvious tool marks, the surface is rough, and is anisotropic. There are obvious burrs on the bottom surface and corners of the blind hole; attached Figure 9 This is the photo after processing. The surface after processing is smooth and bright as a whole, with a mirror effect. The bottom surface of the blind hole and the burrs at the corners are removed, and the hand feels smooth.

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Abstract

The invention discloses a device and a method for finishing and processing the surface of a viscoelastic and magnetic abrasive tool. The abrasive tool for the processing device has viscoelasticity and is in a semisolid state; the flexibility and fluidity of the abrasive tool per se can adapt to various surfaces and reach any part of the surface of a workpiece; the abrasive tool for the processingdevice simultaneously has magnetism, generates an acting force on the surface of the workpiece under the action of a magnetic field and forms complex motion relative to the surface of the workpiece through the rotary motion and reciprocating linear motion of the magnetic field; and under the actions of force and relative motion, the viscoelastic and magnetic abrasive tool generates micro grinding, rolling and electrochemical corrosion on the surface of the workpiece, reduces the surface roughness, improves the physical and mechanical performance, improves the surface quality and realizes deburring and finishing and processing of a complex surface. The device and the method can effectively solve the finishing and processing problems of irregular holes, curved surfaces, surfaces of grooves and the like, and have the advantages of simple device, high utilization rate of the abrasive tool, low processing cost, good processing effect, high efficiency and the like.

Description

technical field [0001] The invention relates to a grinding tool surface finishing device and a processing method thereof, in particular, a viscoelastic magnetic grinding tool with viscoelasticity and magnetism, which is used for elongated holes, narrow grooves, blind holes, curved surfaces and other special-shaped surfaces. A surface finishing device and method thereof. Background technique [0002] An important development direction of modern manufacturing technology is precision and ultra-precision, micro- and ultra-fine processing technology. Surface finishing technology is a very important part of precision and ultra-precision processing technology, and it is also a key issue that is currently being researched and solved. The difficulties in surface finishing of special-shaped surfaces such as elongated holes, narrow grooves, blind holes, and curved surfaces in actual production, as well as the development of new composite materials, all pose new topics and challenges fo...

Claims

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Application Information

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IPC IPC(8): B24B35/00
Inventor 李文辉李秀红杨胜强宋春花
Owner TAIYUAN UNIV OF TECH
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