Method for producing electrical discharge copper matrix tool electrode for steel cavity mould

Abstract

The invention discloses a method for producing an electrical discharge copper matrix tool electrode for a steel cavity mould, which comprises the following steps: firstly, utilizing cartographic software to realize three-dimensional reconstruction of a tool electrode, transforming the reconstructed entity data into an STL formatted file, generating a formatted file defaulted by a photocuring rapid prototyping device after stratified slicing treatment on the STL formatted file, inputting the formatted file into the photocuring rapid prototyping device, and producing a resin prototype of the required electrical discharge copper matrix tool electrode of the steel cavity mould; arranging the produced resin prototype of the tool electrode into a vacuum casting moulding machine to duplicating a silicon mould of the tool electrode; casting a paraffin prototype of the tool electrode by using the silicon mould; and finally, producing the paraffin prototype of the tool electrode into the required copper matrix tool electrode by utilizing a investment casting method. The method for producing the electrical discharge copper matrix tool electrode for the steel cavity mould has the advantages of cost saving, high production speed and high accuracy.

Description

Technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to the use of a combination of light curing rapid prototyping technology and investment precision casting technology to manufacture EDM copper-based tool electrodes for steel cavity molds. Background technique [0002] The steel cavity mold is a blind-hole cavity. The existing manufacturing method usually first uses traditional cutting processing (including cutting with a five-axis CNC machining center), leaving an appropriate machining allowance. After quenching, EDM machining blind hole cavity with tool electrode. [0003] Most of the currently used cavity EDM tool electrodes are graphite EDM tool electrodes made by CNC machining centers. At this stage, many of the tool electrodes in our country still need to import expensive CNC machining centers from abroad. The machining is complicated, time-consuming, and costly, and some shapes cannot or are difficult to realize in cutting. ...

AI Technical Summary

Problems solved by technology

At this stage, many of the tool electrodes in my country still need to import expensive CNC machining centers from abroad. The processing is complicated, time-consuming, and costly, and some shapes are impossible or difficult to achieve by cutting.

In addition, in the process of EDM, the loss of tool electrodes cannot be avoided. In order to ensure the machining accuracy of complex cavities, multiple tool electrodes have to be produced at the same time to process the same cavity, which makes the CNC machining center overwhelmed

A mold manufacturing factory needs to purchase more than ten CNC machining centers to make tool electrodes, which doubles the cost of making tool electrodes and doubles the production efficiency, forming a vicious circle

[0004] In view of this situation, the use of traditional cutting methods to manufacture EDM tool electrodes is complex and difficult, time-consuming and costly, and has become a bottleneck restricting product mold manufacturing

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