Electrode wire rotation and feeding combined driving spindle mechanism for micro electric discharge machining
A technology for driving spindles and electrode wires, applied in electric processing equipment, electrode manufacturing, metal processing equipment, etc., can solve problems such as increasing the difficulty of spindle mechanism design, achieve the effects of solving lead wire design problems, improving discharge efficiency, and shortening distances
Inactive Publication Date: 2014-01-01
TSINGHUA UNIV
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Problems solved by technology
[0004] Therefore, if the spindle mechanism integrates the comprehensive functions of micro-wire rotation angle positioning, variable-speed continuous rotation, and peristaltic clamping feed, it will expand the function and scope of application of micro-EDM, but it will also increase the spindle mechanism. Design Difficulty
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[0030] The present invention provides a combined electrode wire rotation and feed drive spindle mechanism for micro electric discharge machining. The mechanical structure, connection and cooperation relationship, action process and operation steps of the present invention will be described in detail below in conjunction with the accompanying drawings. First, the mechanical structure and assembly connection relationship are described in detail; then, the action process and control method of the micro-electrode wire rotation angle positioning, variable-speed continuous rotation, and peristaltic clamping feed are explained in the micro-EDM process.
[0031] 1. Explain the mechanical constitution and assembly connection relationship of the present invention
[0032] Such as Figure 1 to Figure 6As shown in the embodiment of the present invention, the mechanical structure and related components are assembled and connected: the hollow shaft stepper motor 5 is fixedly connected to th...
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An electrode wire rotation and feeding combined driving spindle mechanism for micro electric discharge machining belongs to the technical field of micro nontraditional machining. The spindle mechanism adopts a mode of leading feeding motion to drive rotation motion, and electrode wire rotation peripheral locating and variable-speed continuous rotation motion adopt forward-direction rotation driving of a hollow-shaft stepping motor. Peristaltic clamping feeding of an electrode wire is coordinately controlled by a normally closed clamp and a normally opened clamp and is achieved by being matched with axial feeding motion. The normally closed clamp is installed on a feeding driven movable unit sliding block, and a unidirectional bearing is used for switching the hollow-shaft stepping motor to rotate for 90 degrees for driving opening in opposite direction. The normally opened clamp adopts a small and exquisite structure which tensions a pressing block through an electromagnet, so that closing and flexibly tensioning the electrode wire can be achieved. The mechanism can be applied to micro electric discharge machining devices, has comprehensive functions of superfine electrode wire rotation periphery angle location, variable speed continuous rotation and peristaltic clamping feeding, can achieve on-line manufacture of special-shaped superfine tool electrodes, improves removing efficiency of machining scraps and compensates loss of the electrode wire.
Description
technical field [0001] The invention belongs to the technical field of micro-special processing, and is oriented to micro-electric discharge machining using micro-long electrode wires, in particular to a micro-electrode discharge machining electrode wire rotation and feed composite drive spindle mechanism. Background technique [0002] As a non-contact micro-special processing technology, micro-EDM uses the pulse discharge between the tool electrode and the work to etch materials, which has the advantages of low processing stress, no processing burrs, and can process high-hardness conductive materials. It can be applied For the processing of micro holes, micro grooves and micro three-dimensional structures. [0003] In the micro-EDM device, the spindle mechanism directly determines the system function, processing efficiency and precision. The main shaft has the function of fine electrode wire rotation, which can reduce the unfavorable short circuit and arc phenomenon in pro...
Claims
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IPC IPC(8): B23H7/26B23H1/00B23H7/10
Inventor 佟浩李勇张龙
Owner TSINGHUA UNIV