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Deterministic magnetic jet-flow finishing method and apparatus

A finishing processing and magnetic jet technology, which is applied in the direction of explosion generating devices, metal processing equipment, manufacturing tools, etc., can solve the problems of stagnant processing technology of large optical parts, reduce the versatility of computer control technology, etc., and achieve high surface quality and the effect of shape accuracy

Inactive Publication Date: 2004-01-28
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0003] There are still many disadvantages in computer-controlled finishing using traditional asphalt polishing dies: first, different materials and shapes of aspheric parts need to use asphalt polishing dies with different hardness, so that the polishing dies can better fit the surface of the workpiece and obtain Good and stable unit removal function, but the different fabrication of polishing molds reduces the versatility of computer control technology
However, due to the limitation of the control principle and implementation method of magnetorheological fluid, satisfactory results have not been obtained, and the CCOS processing technology of large optical parts has been stagnant.

Method used

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  • Deterministic magnetic jet-flow finishing method and apparatus
  • Deterministic magnetic jet-flow finishing method and apparatus
  • Deterministic magnetic jet-flow finishing method and apparatus

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Embodiment Construction

[0010] The present invention is realized by using a "controllable" jet base fluid - magnetorheological fluid. The formula of the magnetorheological fluid is: 30%-40% Volume of carbonyl iron powder, 50%-60% Volume of water, 4%-8% Volume of abrasive, 1%-5% Volume of stabilizer. Magnetorheological fluid is an emerging smart material with promising development and engineering application value. Magnetorheological fluids with good performance can produce obvious magnetorheological effects under the action of a magnetic field, that is, rapid and reversible transitions between liquid and solid states, and this transition is completed within milliseconds. During this process, the viscosity of the magnetorheological fluid remains continuous and changes steplessly. The entire conversion process is extremely fast and controllable, with minimal energy consumption, and real-time active control can be realized. This is because when there is no external magnetic field, the magnetic moments ...

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Abstract

The invention is a kind of decided magnetic radiating processing method. The piece and the nozzle for spraying magnetic rheology liquid are set on the numerical control platform, there sets a magnetic field. It controls the rheology performance of magnetic rheology liquid through controlling the special movement position of the piece and the direction-magnitude of the magnetic field, and controlsthe viscosity of the liquid and the spraying angle. Makes the liquid into anisotropic liquid media and processes the piece. The inventin includes numerical control platform with y axis, v axis, x axis, z axis and u axis, the piece is placed on y axis, v axis has a nozzle above it and u axis. There is controllable electromagnetic coil, z axis connects with u axis and x axis.

Description

Technical field: [0001] The invention relates to the technical field of ultra-precision forming of optical parts, in particular to a method for finishing the surface of optical parts by magnetorheological fluid jets and a device designed by the method. Background technique: [0002] Since the 1980s, computer technology has been integrated into the processing of optical parts, and deterministic processing has become the key to distinguish modern advanced optical manufacturing technology from non-quantifiable and non-repeatable classic optical processing, and thus the development of computer-controlled optical surface Forming technology (referred to as CCOS technology) has greatly promoted the development of optical parts manufacturing technology, especially the grinding and polishing of large optical parts. CCOS technology has shown incomparable advantages in processing efficiency compared with traditional methods, and has a tendency to replace manual processing. With the dev...

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Application Information

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IPC IPC(8): B24C5/08
Inventor 戴一帆李圣怡彭小强郑子文
Owner NAT UNIV OF DEFENSE TECH
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