A lead-in device for high-speed rotating electrical machining of tool electrodes

Abstract

The invention discloses a tool electrode high-speed rotation electromachining electric conduction device. The device comprises an air pump, a rubber tube, an upper end cover, a reducing valve, a revolution joint, a conducting solution, a fixed joint and an electric conduction screw. By the adoption of the device, the abrasion problem of an electric brush in a traditional electric conduction mode can be solved, and the advantages of being safe, green and free of pollution are achieved compared with a mercury electric conduction mode. Meanwhile, compared with a wireless electric conduction mode, the device is simple and easy to implement, the process difficulty and cost are low, and the practicability is good.

Description

technical field [0001] The invention relates to the problem of lead-in for electric machining, in particular to a lead-in device for high-speed rotating electric machining of tool electrodes, which belongs to the field of special processing. Background technique [0002] In the electric machining process, the high-speed rotation of the tool electrode has the following advantages: the high-speed rotation of the tool electrode is conducive to the upward transportation of the working medium in the machining gap, the renewal of the working fluid in the machining gap, and the stability of the machining process. [0003] Due to the high rotational speed of the tool electrode during processing, how to conduct electricity to the tool electrode during processing has become a difficult problem. The current solutions are: electric brush lead, mercury lead, wireless lead. The Chinese patent No. 201520514464.4 discloses a rotary power supply device for rotary kiln. The device is in cont...

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Problems solved by technology

The Chinese patent No. 201520514464.4 discloses a rotary power supply device for rotary kiln. The device is in contact with the slip ring line through the brush, and uses the brush method to conduct electricity. This method can use multiple collectors for power supply, making the power supply more stable. , but the disadvantage is that the brush wear is very serious under high-speed rotation; the Chinese patent No. 201520914971.7 discloses a mercury slip ring device, which uses mercury to conduct current transmission, no wear between the stator and the rotor, and high transmission accuracy. Good stability, but the disadvantage is that mercury is toxic and requires high sealing conditions, especially when the temperature rises during high-speed rotation, mercury vapor is formed, which is very harmful to the health of operators; Chinese patent No. 201520625673.6 discloses a A wireless power supply ultrasonic rotating machining electric spindle, the device responds to the transmitting electromagnetic coil through the receiving electromagnetic coil, and transmits the signal to the piezoelectric ceramic transducer to generate high-frequency vibration processing. This method realizes wireless power induction, but the disadvantage is that the device Complex structure, high cost, poor economy

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