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Novel method and special device for precisely processing titanium alloy joint prosthesis by curved-surface turbulence

An artificial joint and precision machining technology, which is applied in metal processing equipment, manufacturing tools, abrasives, etc., can solve the problems of low processing efficiency, low processing accuracy, uneven processing, etc., and achieve easy design and manufacture, reduce sewage discharge, The effect of improving abrasive grain utilization and processing efficiency

Inactive Publication Date: 2011-08-17
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the shortcomings of low processing efficiency, low processing precision and uneven processing in the existing processing methods, the present invention provides a new method for turbulent precision processing of titanium alloy artificial joint surface with high processing efficiency, high processing precision and uniform processing. Method and special device thereof

Method used

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  • Novel method and special device for precisely processing titanium alloy joint prosthesis by curved-surface turbulence
  • Novel method and special device for precisely processing titanium alloy joint prosthesis by curved-surface turbulence

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Effect test

Embodiment 1

[0015] A new method for turbulent precision machining of titanium alloy artificial joint surface is to construct a restricted flow channel on the outer surface of the titanium alloy artificial joint prosthesis, flow abrasive grains into the restricted flow channel, and artificially control the titanium alloy in a turbulent state. The outer surface of the joint prosthesis is ground and polished.

[0016] The technical idea of ​​the present invention is: abrasive grains with weak viscosity or non-viscosity flow through the flow channel and pass through the outer surface of the artificial joint prosthesis, and in the state of turbulent flow, the frequent action of micro-force and micro-cutting of the abrasive grains is used to realize surface roughness. Step by step smoothing, the randomness of the abrasive grain movement in the turbulent flow field realizes the disorder of the surface texture until the tool-free mirror-level processing of the artificial joint prosthesis surface i...

Embodiment 2

[0018] refer to figure 1 , a special device for a new method of turbulent precision machining of a titanium alloy artificial joint surface, including a titanium alloy artificial joint prosthesis 1, the outer surface of the titanium alloy artificial joint prosthesis 1 is covered with a titanium alloy artificial joint prosthesis matching model 2, the A restricted flow channel 3 is formed between the outer surface of the titanium alloy artificial joint prosthesis 1 and the inner surface of the titanium alloy artificial joint prosthesis matching model 2, and the inlet 4 of the restricted flow channel 3 is connected with a flow of abrasive particles. The outlet 5 of the pipeline is connected with the abrasive particle flow outflow pipeline.

[0019] The shape of the titanium alloy artificial joint prosthesis matching model 2 is the same as that of the titanium alloy artificial joint prosthesis 1, and the size of the titanium alloy artificial joint prosthesis matching model 2 is lar...

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Abstract

The invention relates to a novel method for precisely processing a titanium alloy joint prosthesis by curved-surface turbulence. The novel method comprises the steps of: structuring a constraint runner on an outer surface of the titanium alloy joint prosthesis, introducing an abrasive grain flow into the constraint runner, and grinding and polishing the outer surface of the titanium alloy joint prosthesis in a turbulence state. A special device for the method provided by the invention comprises the titanium alloy joint prosthesis, a die arrangement model of the titanium alloy joint prosthesis covers the outer surface of the titanium alloy joint prosthesis, the constraint runner is formed between the outer surface of the titanium alloy joint prosthesis and the inner surface of the die arrangement model of the titanium alloy joint prosthesis, an inlet of the constraint runner is connected with an abrasive grain flow inlet pipeline, and an outlet of the constraint runner is connected with an abrasive grain flow outlet pipeline. The special device in the invention has the beneficial effects of simple structure, easiness for design and manufacture, high processing efficiency and processing precision and uniformity in processing.

Description

technical field [0001] The invention relates to a new method for turbulent precision machining of partially covered and constrained titanium alloy artificial joints, which is especially suitable for machining titanium alloy artificial joints with complex heterogeneous curved surfaces, and is convenient for controlling the shape and surface accuracy of titanium alloy artificial joints in the process of processing. Background technique [0002] An artificial joint is an organ with joint function, which can restore the motor function of a limb as an implanted organ. [0003] The titanium alloy artificial joint prosthesis after molding and sintering cannot be directly applied to the inside of the human body, and it needs to go through a series of subsequent processes such as grinding and polishing to finally obtain a smooth, uniform, high-quality surface and a good artificial joint with human bones. joint. Under the premise of ensuring the surface accuracy and surface quality o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24C1/08B24C3/32
Inventor 张利许亚敏曾晰文东辉谭大鹏计时鸣李研彪袁巧玲
Owner ZHEJIANG UNIV OF TECH
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