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Flexible grinding and polishing compound arc sand wheel

A grinding wheel, grinding and polishing technology, applied in the field of grinding wheels, can solve the problems of high manufacturing difficulty, high manufacturing process requirements of hole-type flexible grinding wheels, and inability to process aspheric workpieces, etc., achieve high processing efficiency, improve material removal rate and surface shape accuracy , Expand the effect of processing effective parts

Inactive Publication Date: 2014-09-03
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hole-type flexible grinding wheel has very high manufacturing process requirements, is difficult to manufacture, and cannot process aspheric workpieces.

Method used

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  • Flexible grinding and polishing compound arc sand wheel
  • Flexible grinding and polishing compound arc sand wheel
  • Flexible grinding and polishing compound arc sand wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment is used for grinding processing.

[0023] see figure 1 and 2 , The present invention is provided with grinding wheel main body 1, air valve 16, airbag arc adjustment device, annular airbag 3, grinding and polishing material ring and pressing device.

[0024] The main body of the grinding wheel 1 is provided with an air channel 101 , and the air valve 16 is located in the air channel 101 . The inner end of the air channel 101 communicates with the inner cavity 31 of the annular air bag 3 . The air bag arc adjustment device is provided with a front air bag arc adjustment ring 21, a rear air bag arc adjustment ring 22 and an adjustment drive screw 12, and the adjustment drive screw 12 ends are provided with a knob 13. The front airbag arc adjustment ring 21 is nested on the front end surface of the grinding wheel main body 1, the rear air bag arc adjustment ring 22 is nested on the rear end surface of the grinding wheel main body 1, the front air bag arc ...

Embodiment 2

[0027] This embodiment is used for polishing.

[0028] see image 3 , similar to Embodiment 1, the difference is that the grinding and polishing material ring is a polishing washer 17, and the material of the polishing washer 17 is polyurethane. The rest of the symbols correspond to those in Example 1.

[0029] During polishing, the abrasive belt 6, the trimming rubber layer 5 and the hard rubber layer 4 in Example 1 are removed, the annular airbag 3 is kept, and the polishing pad 17 is put on the annular airbag 3. By adjusting the pressure of the annular airbag 3, the stiffness of the airbag 3 can be adjusted. According to different processes, the inflation pressure can be reasonably selected to reduce subsurface damage and surface roughness, and improve material removal rate and surface shape accuracy.

[0030] see Figure 4 , in order to prevent the intermediate frequency error generated by the workpiece P to be processed by the grinding wheel (represented by the label 1...

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Abstract

The invention discloses a flexible grinding and polishing compound arc sand wheel and relates to a sand wheel. The flexible grinding and polishing compound arc sand wheel comprises a sand wheel body, an air valve, an airbag arc-shaped adjustment device, an annular airbag, a grinding and polishing material ring and a compaction device, wherein an air channel is formed in the sand wheel body; the air valve is arranged in the air channel; the inner end of the air channel is communicated with an inner cavity in the annular airbag; the air channel is externally connected with an air source through the air valve; the airbag arc-shaped adjustment device is provided with a front airbag arc-shaped adjustment ring, a rear airbag arc-shaped adjustment ring and an adjustment drive screw rod; the front airbag arc-shaped adjustment ring and the rear airbag arc-shaped adjustment ring are respectively nested onto the rear end surface of the sand wheel body; the adjustment drive screw rod penetrates through the front airbag arc-shaped adjustment ring and the rear airbag arc-shaped adjustment ring as well as the sand wheel body and is in running fit with the sand wheel body; the front part and the rear part of the adjustment drive screw rod are in threaded fit with the front airbag arc-shaped adjustment ring and the rear airbag arc-shaped adjustment ring respectively; the annular airbag is sleeved and pressed onto the front airbag arc-shaped adjustment ring and the rear airbag arc-shaped adjustment ring; the grinding and polishing material ring is sleeved onto the annular airbag; a front pressure ring and a rear pressure ring of the compaction device are used for compacting the two end surfaces of the grinding and polishing material ring and the two end surfaces of the annular airbag respectively; and the front pressure ring and the rear pressure ring are fixedly connected with the front airbag arc-shaped adjustment ring and the rear airbag arc-shaped adjustment ring respectively.

Description

technical field [0001] The invention relates to a grinding wheel, in particular to an ultra-precision aspheric grinding and polishing compound arc grinding wheel for flexible grinding and polishing. Background technique [0002] Large-aperture aspheric lenses have the characteristics of large caliber, high image quality precision, and heterogeneous aperture. The giant laser device of inertial confinement fusion (ICF) uses large-aperture aspheric lenses to achieve laser beam focusing. The processing of such lens elements generally goes through two stages, namely grinding and polishing. The grinding stage mainly ensures the surface shape accuracy of the workpiece and reduces the subsurface damage to reduce the removal amount in the polishing stage; the polishing stage mainly removes the subsurface damage to further reduce the surface shape accuracy and surface roughness of the workpiece. [0003] Grinding aspherical surfaces with traditional diamond arc grinding wheels is a b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D5/00
Inventor 郭隐彪林晓辉姜涛林建华白志杨
Owner XIAMEN UNIV
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