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Precise magnetic flowage polishing system for optics parts and method thereof

A technology for precision polishing and optical parts, applied in the direction of optical surface grinders, grinding/polishing equipment, grinding machines, etc., can solve the problems of high manufacturing cost and low material removal efficiency, achieve convenient operation, high processing efficiency, and improve processing efficiency Effect

Inactive Publication Date: 2008-07-23
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Under the action of a magnetic field, the above-mentioned processing methods all use a small flexible grinding head with a certain hardness to replace the loose grain abrasive for polishing, but due to the fixed installation method of the workpiece and the fixed shape of the grinding head, they can only process smaller planes and curved surfaces. And it is single-point small grinding head polishing, the material removal efficiency is low, and special fixtures need to be designed for parts of different shapes and sizes, and the manufacturing cost is high

Method used

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  • Precise magnetic flowage polishing system for optics parts and method thereof
  • Precise magnetic flowage polishing system for optics parts and method thereof
  • Precise magnetic flowage polishing system for optics parts and method thereof

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Embodiment 1

[0044] Embodiment 1, as shown in Figure 1, the device for magnetorheological precision polishing of optical parts is mainly composed of a spindle device, a numerical control platform device and a liquid circulation device. The main shaft and the two shafts are fixedly connected by the main shaft connecting device, and the polishing head is installed on the polishing main shaft. Speed, the spindle device moves along the Z-axis direction to adjust the relative distance between the polishing head and the workpiece, and the magnetic field generator around the polishing head is connected to the spindle device, and the electromagnetic coil is connected to a controllable DC power supply, which is generated in the processing area after power on. Gradient magnetic field, the magnetic field strength is controlled by adjusting the current strength, the rotational speed of the polishing spindle is ≥1000 rpm, and the magnetic field strength is ≥0.2 Tesla. The liquid circulation device is c...

Embodiment 2

[0047] Embodiment 2: The overall device and composition of this embodiment are the same as that of specific embodiment 1, the difference is that a small-sized single-point polishing head with a convex curved surface is used to replace a large-sized multi-point polishing head on a plane for polishing. The polishing method and steps of this embodiment As follows: Install large-size flat optical parts on the workbench, position and clamp the optical parts; The head reaches the initial processing position, and adjust the distance between the polishing spindle and the workpiece; close the shut-off valve, add the magnetorheological liquid to the liquid storage tank, open the shut-off valve and start the delivery peristaltic pump, and the magnetorheological fluid passes through the silicone hose Then enter the polishing head with the rotary joint, then fill the gap between the polishing head and the workpiece, and finally enter the recovery device, start the recovery peristaltic pump ...

Embodiment 3

[0048] Embodiment 3: this embodiment is identical with specific embodiment 1 overall device and composition, as shown in Figure 14, and difference is to replace plane large-size optical part with curved surface large-size optical part, so described polishing head should be large Surface single-point polishing head and small-sized curved surface single-point polishing head, the body platform is mainly composed of frame, workbench, X-axis workbench, Y-axis workbench, Z-axis slide table and clamping components, and the workpiece is installed on the workbench In addition, the spindle device cooperates with the Z-axis slide table. In addition to moving, the X table and Y table can also realize the swing around the axis. Through the linkage of multiple degrees of freedom, the polishing process at any position in the workpiece space can be realized.

[0049] The polishing method and steps of this embodiment are as follows: install the large-size curved surface optical parts on the wor...

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Abstract

The invention relates to an optical part magnetic rheologic precise polishing system and a method; magnetic rheologic liquid which flows out of a liquid storage cylinder is pressurized by a peristaltic pump and then enters a polishing head through a rotating connector and a guide pipe; the clearance between a workpiece and the polishing head is fully filled by the magnetic rheologic liquid; under the action of electromagnetic field, the magnetic rheologic liquid is transformed from the liquid state to the half-solid state so as to form a flexible grinding head used for polishing. The polishing head of the invention is not directly contacted with the workpiece; the polishing heads with different shapes and specifications can be replaced according to the processed workpiece; a computer automatic control device can realize the viscousity control and the temperature control of the magnetic rheologic liquid, and different polishing efficiency and precisions can be obtained by changing the factors such as magnetic field and rotation speed, etc.; the method of the invention can process the curved workpieces and plane workpieces with different shapes, more particularly the ultra-precise polishing of the large plane optical parts; the system has the advantages of high processing efficiency, wide applicable range, high processing precision and convenient operation.

Description

technical field [0001] The invention relates to the technical field of magnetorheological fluid precision polishing, in particular to a high-efficiency magnetorheological precision polishing method and device for high-performance optical parts. Background technique [0002] The continuous development of modern science and technology has put forward higher and higher requirements for the surface quality of optical parts, requiring the surface of optical parts not only to have a perfect geometric shape, but also to have good physical and mechanical properties. Therefore, as the ultimate processing procedure, the surface finishing technology has been developed rapidly. It is a new frontier subject integrating mechanical processing, materials science, physics, electromagnetism, chemistry and other disciplines, and it is being paid more and more attention by people. . [0003] The rapid development of optical lenses also puts forward higher requirements for the ultra-precision p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B13/00B24B1/00
Inventor 杨建国李蓓智王安伟赵华
Owner DONGHUA UNIV
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