Device and method for polishing symmetrical optical component of small-caliber rotating shaft

A polishing device and optical element technology, applied in grinding/polishing equipment, abrasive feeding device, used abrasive processing device, etc., can solve the problem of large outward expansion, large fluid disturbance, unstable performance, etc. To achieve the effect of enhancing the sliding effect and stability, improving the removal efficiency and reducing the air interference

Active Publication Date: 2013-01-16
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional high-pressure abrasive jet is carried out in an open air environment with atmospheric pressure. The fluid is greatly disturbed by aerodynamic force, and the outward expansion is greatly affected, resulting in a large polishing point, which lim

Method used

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  • Device and method for polishing symmetrical optical component of small-caliber rotating shaft
  • Device and method for polishing symmetrical optical component of small-caliber rotating shaft
  • Device and method for polishing symmetrical optical component of small-caliber rotating shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] see figure 1 , the small-diameter rotary axis-symmetrical optical element polishing device includes a sealed container mechanism 2, a worktable drive system 1 installed in the inner cavity of the sealed container mechanism 2, and a polishing fluid circulation system 3 connected to the sealed container mechanism 2;

[0040] The workbench drive system 1 includes a servo lifting platform 11 capable of moving up and down, a servo rotating platform 12 capable of rotating and moving on the servo lifting platform 11, and a servo rotating platform 12 for fixing a workpiece 15 with a symmetrical curved surface on the rotary axis. The workpiece support table 13;

[0041] The sealed container mechanism 2 includes a circular support platform 21, a sealing cylinder 22 arranged on the circular support platform 21, a sealing cylinder 22 sleeved on the upper part of the sealing cylinder 22 and locked and connected with the sealing cylinder 22 through an adjustable positioning block 24...

Embodiment 2

[0045] see Figure 5 , the small-diameter rotary axis-symmetrical optical element polishing device includes a sealed container mechanism 2, a worktable drive system 1 installed in the inner cavity of the sealed container mechanism 2, and a polishing fluid circulation system 3 connected to the sealed container mechanism 2;

[0046] The workbench drive system 1 includes a servo lifting platform 11 capable of moving up and down, a servo rotating platform 12 capable of rotating and moving on the servo lifting platform 11, and a servo rotating platform 12 for fixing a workpiece 15 with a symmetrical curved surface on the rotary axis. The workpiece support table 13;

[0047] The sealed container mechanism 2 includes a circular support platform 21, a sealing cylinder 22 arranged on the circular support platform 21, a sealing cylinder 22 sleeved on the upper part of the sealing cylinder 22 and locked and connected with the sealing cylinder 22 through an adjustable positioning block 24...

Embodiment 3

[0052] The method for polishing a small-diameter rotary axisymmetric optical element based on the device of the present invention comprises the following steps:

[0053] (1) Fix the workpiece 15 with a small-diameter rotary axis-symmetrical curved surface on the workpiece support table 13, and adjust the distance between the curved surface of the rotary axis-symmetrical curved surface workpiece 15 and the flow-limiting nozzle 309 to 4 mm;

[0054] (2) Add polishing fluid containing fine abrasive particles 311 into the liquid storage tank 304; start the agitator 305 and the suction pump 302 to reduce the pressure in the negative pressure space, so that the polishing fluid passes through the suction pipe 306 and the swing pipe 308 from the The flow-limiting nozzle 309 shoots out and polishes the workpiece 15 with a symmetrical curved surface on the rotary axis, and then returns to the liquid storage tank through the suction pipe 301 and the return pipe 303. The polishing fluid ci...

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PUM

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Abstract

The invention discloses a device and a method for polishing a symmetrical optical component of a small-caliber rotating shaft. The device comprises a sealed container mechanism, a workbench drive system which is installed in an inner cavity of the sealed container mechanism and a polishing fluid circulating system which is connected with the sealed container mechanism; and a negative pressure space is formed in the upper part of the inner cavity of the sealed container mechanism. During the polishing, a suction effect of negative pressure difference is utilized for sucking and compositing polishing fluid, a negative pressure cavitation effect is utilized for machining a workpiece surface, a normal pressure environment of machining is changed into a negative pressure environment, air disturbance in an injection process is reduced, a polishing point can be reduced, and the sliding friction function and stability of micro and fine abrasive particles are increased; and moreover, the negative pressure cavitation effect forms strong cavitation shock wave and high speed micro jet, so that the removal efficiency of the workpiece surface is increased. Materials are removed under the combined action of abrasive particle cutting and cavitation erosion, so that the surface with high quality is obtained. The device is suitable for polishing various rotating symmetroid optical components, and has a high practicable value in automatic processing.

Description

technical field [0001] The invention belongs to the technical field of ultra-precision optical polishing processing, and relates to a fluid polishing device and method suitable for processing the curved surface of a small-diameter rotary axis-symmetrical optical element. Background technique [0002] With the sharp increase in the demand for small-caliber optical components in digital cameras, mobile phones, photographic devices, endoscopes, aiming systems and other products, the requirements for the quality of their processed surfaces are also getting higher and higher. For optical components and molds with small-diameter rotary axis symmetry, the grinding process can generally achieve high shape accuracy and smooth mirror surface, but in the case of strict requirements, surface defects and damages after grinding must be polished with free abrasive grains to improve surface quality. For the polishing of small-diameter rotary axis-symmetrical workpieces below a few millimet...

Claims

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Application Information

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IPC IPC(8): B24C3/02B24C7/00B24C9/00B24C5/00
Inventor 陈逢军尹韶辉胡天余剑武许志强
Owner HUNAN UNIV
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