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Automatic polishing device for surface finishing of complex-curved-profile parts

a technology of complex-curved-profile parts and automatic polishing, which is applied in the direction of automatic grinding control, metal-working equipment, manufacturing tools, etc., can solve the problems of insufficient precision at acceptable efficiency, the use of these automated polishing machines is restricted to those parts, and the existing automated polishing machines cannot be applied to complex-curved-profile parts. , to achieve the effect of facilitating the flow of abrasive slurry, low cost and non-destructiv

Inactive Publication Date: 2013-10-17
NANO & ADVANCED MATERIALS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an alternate polishing device that can create a uniform finish on a free form surface. It is precise, low cost, non-destructive, and non-polluting. The device includes a controlled flow of abrasive slurry and an apparatus for mounting the workpiece with which its orientation varies along multi-axes. The first rotary stage is automatically adjustable for controlled variation in the orientation of the mounted workpiece. The abrasive slurry includes a plurality of abrasive particles and a carrying liquid, and may also include a plurality of elastic polymer particles and a magnetic core to facilitate the flow of the abrasive slurry. The device may also be modified to include a second rotary stage for driving the rotation of the first rotary stage.

Problems solved by technology

However, the use of these automated polishing machines is restricted to those parts with surface profiles in regular shape.
Most of the existing automated polishing machines just could not be applied to the complex-curved-profile parts, such as small watch parts and jewelry parts that are made of metal or metal alloy, jade stone, ivory, and ceramics, etc.
U.S. Pat. No. 6,171,175 has disclosed a hand polishing method using conventional grinding, lapping, honing techniques, or an automatic polishing method with improved adaptive mechanical tools but none of these methods can give enough precision at acceptable efficiency.
No. 20070227878) possess high precision but the capital cost is too high.
However, the treatment and disposal of used chemicals and waste water are troublesome.
Such wet-polishing processes involving chemical reactions are restricted due to environmental regulations in many circumstances.

Method used

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  • Automatic polishing device for surface finishing of complex-curved-profile parts
  • Automatic polishing device for surface finishing of complex-curved-profile parts
  • Automatic polishing device for surface finishing of complex-curved-profile parts

Examples

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Embodiment Construction

[0012]FIG. 1 illustrates an exemplary embodiment of the present invention. The automatic polishing device in this embodiment comprises a circular container 11 containing an abrasive slurry 12 which comprises a plurality of abrasive particles and a carrying liquid driven by a liquid pump 13, wherein the liquid pump 13 drives the abrasive slurry to form abrasive slurry flow 12 in the circular container 11. A workpiece 15 to be polished is mounted in a three-axis rotary stage 16 immerged inside the abrasive slurry flow 12. The orientation of the workpiece 15 varies in a controlled manner by the three-axis rotary stage 16 capable of automatic adjustment to facilitate a gentle and uniform surface finish of the workpiece 15. In one example, the workpiece 15 is a complex-curved-profile aluminum article at dimension of less than 50(L)×50(W)×50(H)mm3. It is immerged in the abrasive slurry 12 containing 600 mesh silicon carbide (SiC) abrasive particles, other polymers such as silicone-based e...

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Abstract

The present invention discloses an automatic polishing device and the method of using the device for the surface finishing of a workpiece such as complex-curved-profile parts. Automatic polishing is performed by mounting the workpiece on an apparatus which enables different orientations along multiple axes and immerging the workpiece in a controlled flow of abrasive slurry. The device of the present invention provides a uniform finish on free form surface. It is also precise, low cost, non-destructive, and non-polluting.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application claims priority from the U.S. provisional application Ser. No. 61 / 686,852 filed on Apr. 13, 2012, the disclosure of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]This invention relates to an automatic polishing device, in particular, to a flow-based polishing device for the surface finishing of complex-curved-profile parts.TECHNICAL BACKGROUND[0003]Polishing is an essential process of creating a smooth and shiny surface by using mechanical or chemical reaction and it has been employed by manufacturing industry for centuries. Comparing with hand-polishing, the process using automated polishing machines, such as those used for polishing semiconductor wafers and for polishing fine optics, are more efficient. However, the use of these automated polishing machines is restricted to those parts with surface profiles in regular shape. Therefore, hand-polishing is still widely used in a number of ind...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B24B49/00
CPCB24B49/00B24B31/003B24B31/102
Inventor KAN, KWOK FUNGCHEN, JIHE, JIAN CHAOZHANG, CHUN
Owner NANO & ADVANCED MATERIALS INST
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