Temperature compensation method for machined workpiece in turbulent flow machining process of artificial joint piece

Abstract

The invention discloses a temperature compensation method for a machined workpiece in the turbulent flow machining process of an artificial joint piece. The method includes the following steps that (1) an artificial joint abrasive flow machining profiling flow channel is established; (2) the turbulence energy function of abrasive flow in the profiling flow channel is established; (3) the kinetic energy loss formula of the abrasive flow is established; (4) the relational expression of the temperature and machining path is established; (5) profiling electromagnetic wave heaters are arranged; and (6) after the whole device works stably, all the positions in the profiling flow channel are subjected to temperature compensation by independently adjusting a heating source of each profiling electromagnetic wave heater, and the abrasive flow is used for continuously machining the artificial joint piece till the complete machining process is completed. By means of the temperature compensation method, the temperature compensation function is established, temperature variation of the abrasive flow in the profiling flow channel is visually reflected in real time by establishing the temperature compensation function, and therefore temperature compensation of all the positions in the profiling flow channel is facilitated, the heating sources of the electromagnetic wave heaters can be accurately controlled conveniently, and homogeneity in the machining process is guaranteed.

Description

technical field [0001] The invention relates to the technical field of abrasive flow polishing, and more specifically, relates to a method for compensating the temperature of workpieces during turbulent flow processing of similar artificial joints. Background technique [0002] Artificial joint is an artificial organ designed by people to save joints that have lost their function. It has the best curative effect among artificial organs. The commonly used materials for artificial joints are metal alloys. Among them, special titanium alloys are suitable for the manufacture of artificial joints because of their biocompatibility, corrosion resistance, and elastic modulus, which are close to those of human bones. The surface quality of artificial joints determines the surface friction properties. The greater the roughness, the higher the contact probability of asperities on the surface, resulting in increased adhesive wear. As we all know, titanium alloy has poor processing tech...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the turbulent total kinetic energy of the abrasive particle flow changes with time during the turbulent precision machining process of the existing artificial joint parts, which leads to the poor uniformity of the machining effect in the entire machining process, and provides a kind of artificial joint. The Temperature Compensation Method of Workpiece During Turbulent Flow Machining of Joint Parts

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