An electrophoresis-assisted ultrasonic mechanical composite micro-drilling device

Abstract

The invention discloses an electrophoretic assisted ultrasonic mechanical composite micro-drilling machining device comprising a vertical slider, a micro ultrasonic spindle, a micro ultrasonic spindle power generator and a control panel thereof, an electrophoretic assisted power supply, a micro ultrasonic platform power generator and a control panel thereof, a micro three-dimensional motion platform, a micro ultrasonic operating platform, a drilling bit and an electrophoretic assisted electrode. In the ultrasonic vibration assisting micro-drilling machining process, the solution with supermicro abrasive particles is added, the micro drilling bit is provided with the assisting voltage through the electrophoretic circular assisting electrode, the assisting electric field is generated between the solution and the micro drilling bit to drive the micro abrasive particles to move or absorb the micro abrasive particles to the micro drilling bit, the binding force of the micro abrasive particles on the drilling bit can be regulated indirectly by regulating the voltage to allow the abrasive particles to grind workpieces, consolidated abrasive particles protect the drilling bit, cutter wearing is reduced, the abrasive particles are driven by ultrasonic vibrations to impact the workpieces, material removing efficiency is improved, and drilling machining efficiency is improved.

Description

technical field [0001] The invention relates to an electrophoresis-assisted ultrasonic mechanical composite micro-drilling processing device, in particular to a micro-drilling processing device involving metal or non-metal difficult-to-machine materials, and belongs to the technical field of micro-structure composite processing. Background technique [0002] With the development of industrial production, due to the superiority of the performance of tiny parts, modern industrial products continue to develop in the direction of lightness, thinness, shortness and smallness, and its component parts are becoming more and more miniaturized and precise. As the application of metal parts is becoming more and more extensive, more and more parts with tiny holes appear in the same way. According to statistics, the processing of holes accounts for about 1 / 3 of the total machining and 1 / 4 of the total machining time. [0003] In hole processing, the processing of micro holes is the most...

AI Technical Summary

Problems solved by technology

[0006] Mechanical drilling cannot process materials harder than tools, and the space for chips is small. Especially when processing deep holes, chips are difficult to discharge, resulting in damage to the drill bit. In order to obtain a certain cutting speed, a high speed is required. Generally, It is required to be around 10 000~150 000 r / min, and the rotation error of the spindle is required to be small (<1μm). Such equipment is expensive, and ordinary mechanical drilling cannot avoid burrs

[0007] Due to the loss of the discharge gap and the electrode, the roundness and aperture accuracy of the micro-holes in EDM are poor, and chip removal is difficult; the geometric accuracy and shape accuracy of laser drilling are not high, and the cost is high

Ordinary drilling bits are easy to slip and burn on the workpiece; while in ultrasonic vibration drilling, the disadvantages are high processing temperature, serious tool wear, unstable processing under complex working conditions, and slow processing efficiency

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