Swinging head structure

Abstract

The invention discloses a swinging head structure. A swinging head B base is adopted, a swinging head B arc-shaped track groove is formed in the swinging head B base, a swinging head B servo motor capable of rotating relative to the swinging head B base is arranged on one side of the swinging head B base, and an output shaft of the swinging head B servo motor is connected with a swinging head B ball screw; a swinging head A base is rotatably arranged on the other side of the swinging head B base, the rotating arc radius of the swinging head A base is equal to and concentric with the arc radiusof the swinging head B arc-shaped track groove, and the swinging head A base is rotationally connected with a swinging head B lead screw nut; and the servo motor drives a nut of a lead screw nut pairto achieve linear motion, and the nut moves out of an arc under the track constraint condition through the linear motion of a lead screw, so that a swinging head B is driven to swing in the swinginghead B direction, multiple transmission links are omitted in the structure, linear motion is combined with rotation so as to move out of the arc track, the whole swinging heads AB can meet the requirements that large torque is needed and the rotating speed cannot be too low when difficult-to-machine materials are cut, and the device is compact in structural design, simple in structure and stable in transmission.

Description

technical field [0001] The invention belongs to the field of high-precision, high-speed, high-efficiency five-axis linkage machining, and in particular relates to a swing head structure. Background technique [0002] As a suitable equipment for processing complex thin-walled parts, the five-axis machining center is widely used in the aerospace field. The AB pendulum, as an important functional component of the five-axis machining center, is the focus and difficulty of research and development. [0003] In order to meet the requirements of cutting difficult-to-machine materials such as titanium alloys, higher torque is generally required. The traditional AB swing head uses an ordinary servo motor to drive the rack and pinion, and then drives through the worm gear to achieve torque amplification. However, the increase of the transmission link increases the overall weight of the AB swing head, which leads to the failure of the rotation speed of the AB swing head to reach a hig...

AI Technical Summary

Problems solved by technology

However, the increase of the transmission link increases the overall weight of the AB swing head, which leads to the inability of the rotation speed of the AB swing head to reach a higher value, resulting in the problem of low processing efficiency.

At the same time, due to the large volume and inertia of the traditional swing head, the mechanical wear increases and the machining accuracy decreases.

Images