Double-swing cutter head driven by alternating-current permanent-magnet synchronous inner rotor torque motor

Abstract

The invention belongs to the field of machine tools, in particular to a double-swing cutter head driven by an alternating-current permanent-magnet synchronous inner rotor torque motor. The double-swing cutter head is divided into an upper part and a lower part by an end-toothed disc, wherein the upper part is a shaft C which can rotate around a vertical shaft, the lower part is a shaft A which can swing around the vertical shaft, and the shaft A and the shaft C are respectively connected by an exchangeable interface; a spindle box of the shaft A, a spindle-box support shaft, and an inner rotor of the torque motor are connected to a box body of the shaft A by bearings; the box body of the shaft A is equipped with an outer rotor of the torque motor; the cutter head is connected with the shaft C by a hydraulic pulling claw through the positioning of the end-toothed disc, and the exchange of the shaft A is realized by the pulling claw through hydraulic control; and the torque motor on the shaft C transmits twisting moments by the end-toothed disc so as to realize the peripheral rotation of the shaft A, and the swing of the spindle box is realized by the torque motor on the shaft A. By using the double-swing cutter head provided by the invention, the problems that the traditional mechanically operated double-swing is large in additional rotation inertia and complicated in installation and has a transmission clearance, and the like caused by excessive middle transmission links are solved, therefore, the double-swing cutter head provided by the invention can be widely applied to high-grade numerical control machining centers subjected to surface machining.

Description

technical field [0001] The invention belongs to the field of machine tools, specifically a double pendulum milling head driven by an AC permanent magnet synchronous inner rotor torque motor, which has two degrees of freedom of rotation, A and C, and the A axis can be automatically exchanged. Composite structure used by central unions. Background technique [0002] At present, as the core component of the five-axis linkage processing machine tool, the driving mode of the double pendulum milling head is mainly driven by ordinary motor mechanical transmission chain and external rotor torque motor. Mechanical transmission generally includes gear transmission and worm gear transmission, which is characterized by large transmission torque, but due to the existence of high gear, clearance is inevitable. Although the existing technology can eliminate the clearance to a certain extent, due to the existence of wear, its Accuracy is bound to be difficult to guarantee. Although the ex...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an AC-axis double pendulum milling head with interchangeable A-axis driven by an AC permanent magnet synchronous inner rotor torque motor, so as to solve the additional rotation of the double pendulum head of traditional mechanical transmission due to too many transmission links in the middle Problems such as large inertia, gap in transmission, complicated installation, etc.

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