A non-contact induction power supply device for ultrasonic milling

Abstract

The invention discloses a non-contact inductive power supply device for ultrasonic milling, which mainly includes a primary side and a secondary side. The spatial position relationship between the primary side and the secondary side is arranged as an inner and outer concentric circle, and there is no mechanical connection between the two, wherein the structure of the primary side is only about 2 / 5 of the circumference in the circumferential direction. Complete circular columnar structure. The secondary side is optimized to realize mutual compensation at the working vibration frequency of the ultrasonic vibration system by using the leakage inductance of the secondary side coil and the equivalent capacitive reactance of the ultrasonic vibration system without additional compensation components. . The non-contact induction power supply device has a compact structure, a small moment of inertia, and can be expanded and installed, which can meet the working requirements of automatic tool change, high-speed rotation of the spindle, and high power of the ultrasonic vibration system in ultrasonic milling; install two sets of the non-contact The induction power supply device can also meet the power supply requirements of ellipse ultrasonic milling.

Description

technical field [0001] The invention relates to a non-contact inductive power supply device, in particular to a non-contact inductive power supply device for ultrasonic milling. The invention belongs to the technical field of ultrasonic milling. Background technique [0002] In the traditional ultrasonic milling process, the ultrasonic vibration system mostly adopts the contact power supply mode. For example, the power supply mode of the conductive slip ring has four major defects: First, the slip ring is always in contact with the power supply brush, resulting in serious wear or damage, which cannot ensure stability. and high-reliability ultrasonic milling operations; secondly, due to the contact electric spark of the power supply brush, the stable and high-reliability ultrasonic milling processing operation cannot be guaranteed; thirdly, in order to reduce the wear or damage of the slip ring, it has In addition, after adding the sealing ring, the speed cannot be increased...

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Problems solved by technology

[0002] In the traditional ultrasonic milling process, the ultrasonic vibration system mostly adopts the contact power supply mode. For example, the power supply mode of the conductive slip ring has four major defects: First, the slip ring is always in contact with the power supply brush, resulting in serious wear or damage, which cannot ensure stability. and high-reliability ultrasonic milling operations; secondly, due to the contact electric spark of the power supply brush, the stable and high-reliability ultrasonic milling processing operation cannot be guaranteed; thirdly, in order to reduce the wear or damage of the slip ring, it has In addition, after adding the sealing ring, the speed cannot be increased, so it cannot meet the requirements of high-speed rotation of the ultrasonic milling spindle; the fourth is that there is a mechanical connection between the rotating part and the stationary part in the power supply device, which cannot meet the automatic tool change requirements of the CNC machining center. Require

[0005] 1) It cannot meet the requirements of automatic tool change of CNC machining center;

[0006] 2) The rotation stability of the rotating part is low, and after being installed on the standard spindle ultrasonic milling tool holder, it cannot meet the high-speed rotation requirements of the ultrasonic milling spindle;

[0007] 3) The resonance compensation scheme adopted by the secondary circuit has theoretical flaws, the transmission capacity of the non-contact induction power supply device is limited, and it cannot meet the working requirements of the high-power ultrasonic vibration system

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