Electrical discharge machining method of three-dimensional space hole

Abstract

The invention provides an electrical discharge machining method of a three-dimensional space hole. The electrical discharge machining method of the three-dimensional space hole is characterized by comprising the steps that 1, a locating fixture is made; the locating fixture is capable of conducting clamping and locating on a workpiece and being connected with a machine tool rotating table stably and reliably, and the fixture can not interfere the machining position; 2, the coordinate zero points of each axis of a machine tool is defined; when the rotating table plane is parallel to the XY plane, the zero point state of a swing axis B axis is achieved, the position of the swing axis B axis is the zero point, the coordinate zero points of the X axis, the Y axis and the Z axis of the machine tool are the intersection points of a gyration center of a revolving axis C axis and the rotating table plane when the swing axis B axis is in a zero point state, and the zero point of the revolving axis C axis is a fixed position.

Description

Technical field: [0001] The method relates to the field of electric discharge small hole machining, and is based on the electric discharge machining of three-dimensional small holes on a workpiece with a mathematical model. Background technique: [0002] At present, the commonly used EDM method for three-dimensional small holes is: scribe the hole position according to the theoretical size of the hole, and use the six-axis EDM small hole with B, C rotary axis and X, Y, Z, S linear axis The processing machine tool positions the electrode tube to the marking position through the rotation and movement of each axis, and determines the machining hole position by visually comparing the marking position. The shortcomings of this method: 1. The programming efficiency is low, and each hole position needs to be observed and compared with the naked eye; 2. The equipment utilization is low, and the spatial hole position must be performed on the machine tool by means of picking points, which ...

AI Technical Summary

Problems solved by technology

The shortcomings of this method: 1. The programming efficiency is low, and each hole position needs to be observed and compared with the naked eye; 2. The utilization rate of the equipment is low, and the space hole position must be selected on the machine tool, which reduces the effective processing of the equipment Time; 3. The positioning accuracy of small holes is poor, because each hole position is determined by naked eye observation, human factors are greatly affected, and the hole position deviation after programming is large

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