Electric spindle type torque motor driven A/C double tilt angle numerical control universal milling head

Abstract

The invention discloses an electric spindle type torque motor driven A / C double tilt angle numerical control universal milling head. The electric spindle type torque motor driven A / C double tilt angle numerical control universal milling head comprises a spindle which is arranged in a swinging body and is used for clamping a tool, and a shaft A assembly for supporting a spindle unit, wherein the part comprises a support frame consisting of a left-right box and a connecting body and a torque motor which drives the spindle unit to swing; a rotor is arranged on a supporting shaft of the swinging body; a stator is arranged on the box; the shaft A assembly serving as an overall unit is fixed on the rotor of a shaft C part torque motor; a shaft A transmission mechanism is wholly arranged in a fork-shaped swinging body; the shaft A is directly driven to swing by adopting an outer rotor type torque motor; the shaft C driving torque motor is arranged inside a ram; the shaft C is directly driven to rotate by adopting an outer rotor type torque motor; and the shaft C can infinitely rotate within nx360 degrees by virtue of a shaft C conductive sliding ring. The shaft A torque motor drives a milling head to swing around the shaft A, and the electric spindle rotates in a horizontal plane along with the swinging body and swings in a vertical plane along with the swinging body. According to the universal milling head disclosed by the invention, five-axis combined machining of a complicated surface in the field of numerically-controlled machine tools can be realized.

Description

technical field [0001] The invention relates to an electric spindle type torque motor-driven A / C double-swing angle numerical control universal milling head, which is used to realize the five-axis linkage processing requirements of complex profiles in the field of numerical control machine tools. Background technique [0002] The double-swing angle CNC universal milling head in the traditional structure realizes the drive of the milling head through the transmission mechanism. The power source usually adopts a servo motor, and the intermediate transmission link adopts gear transmission, synchronous belt transmission or worm gear transmission. In this traditional solution, although the cost is low, the processing accuracy of gears, synchronous pulleys or worm gears is high; and due to the existence of intermediate transmission links, moment of inertia, elastic deformation, backlash, motion Hysteresis, friction, vibration, noise and wear will reduce the accuracy and stability...

AI Technical Summary

Problems solved by technology

In this traditional solution, although the cost is low, the processing accuracy of gears, synchronous pulleys or worm gears is high; and due to the existence of intermediate transmission links, moment of inertia, elastic deformation, backlash, motion Lag, friction, vibration, noise and wear will reduce the accuracy and stability of the double-swing angle CNC universal milling head system over time

In addition, the complex mechanical transmission structure plus the mechanical facilities adopted to eliminate the transmission gap make the transmission structure more complicated

Due to the existence of the transmission gap, the positioning accuracy will not be very high, which cannot meet the requirements of higher processing accuracy and reduce the processing quality.

Images