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Non-contact electrical discharge machining system

A non-contact, machining system technology, applied in electric machining equipment, metal machining equipment, circuits, etc., can solve problems such as restricting EDM machining efficiency and improving surface integrity, limiting spindle speed and rotation accuracy, etc. The effect of concentrated discharge and abnormal arc discharge, improved precision and compact structure

Active Publication Date: 2017-11-21
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0005] In view of this, the present invention provides a non-contact electric discharge machining system based on the principle of electromagnetic induction, which can solve the problem that the existing contact electric energy introduction system severely limits the spindle speed and rotation accuracy, which restricts the processing efficiency of electric discharge machining and surface integrity issues

Method used

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Embodiment Construction

[0023] In order to make the technical means, creation features, work flow, use method, purpose and effect of the present invention easy to understand and understand, the following combination Figure 1 to Figure 4 , to further illustrate the present invention.

[0024] In this embodiment, the first scheme adopts the principle of double induction, and the transformation method is through a loosely coupled designed transformer coil, and its magnetic core is a special-shaped ferrite material. like figure 1 As shown, the medium induction coil (1) is fixed on the stationary end of the main shaft (9) and does not rotate with the main shaft. The dielectric induction coil (1) is connected to a pulse power source that generates a certain frequency, and a changing voltage and current are generated in the coil, and a certain electromotive force and current are generated in the dielectric induction coil (1) through the principle of electromagnetic induction, so as to transmit energy from...

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Abstract

The invention relates to a non-contact electrical discharge machining system, comprising a non-contact electrical discharge machining electricity introduction system that is of inside-outside separate structure. Electricity is transferred to a tool electrode in wireless transmission manner; in this way, the structure can be compacted, good dynamic balance can be provided for a hilt, and high spindle speed can be achieved. In addition, high-speed rotation of a spindle can further accelerate flowing of an inter-electrode working fluid, discharge chips can be removed quickly, and fine electrical discharge machining efficiency is further improved. By increasing the spindle speed, it is possible to inhibit discharge concentration and abnormal arc discharge, pulse utilization rate can be increased, and machining speed is further increased.

Description

technical field [0001] The invention belongs to the technical field of electrical discharge machining, and in particular relates to a non-contact electrical discharge machining electrical energy introduction system based on the principle of electromagnetic induction. Background technique [0002] The traditional electric spark power transmission mostly adopts physical contact power transmission methods such as carbon brushes and collector rings. In this way, carbon brushes and collector rings have fast sliding wear, large heat generation, exposed wires, and the speed should not be too high. It is easy to cause problems such as contact sparks. At the same time, the use of carbon brushes and collector rings has contacts and forces on the electrodes, which adds vibration to the electrodes and reduces the rotation accuracy. Therefore, most of the current research is carried out when the electrodes do not rotate or rotate at low speeds. [0003] The high-speed rotation of the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H1/00B23H1/02B23H11/00
CPCB23H1/00B23H1/02B23H11/00
Inventor 董颖怀王岩杨峰薛威
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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