Right-angle milling head for compensating coaxial errors

Abstract

The invention relates to the technical field of metal milling devices and discloses a right-angle milling head for compensating coaxial errors. The right-angle milling head comprises a shell, a vertical shaft, a bevel gear unit and a horizontal shaft, wherein the vertical shaft is connected with the horizontal shaft at a right angle through the bevel gear unit; the vertical shaft and the horizontal shaft can be rotatably arranged in the shell through bearings; the vertical shaft comprises an upper vertical shaft, a lower vertical shaft, and an elastic coupling; the elastic coupling comprises an upper part and a lower part; a gap is formed between the upper part and the lower part; and the upper vertical shaft is coaxially connected with the lower vertical shaft through the elastic coupling. By the technical scheme, the work environment of shaft elements is improved, the transmission is stable, the service life of the equipment is prolonged, and the machining efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of metal milling machine tools and cutters, in particular to a right-angle milling head for compensating coaxiality errors. Background technique [0002] The right-angle milling head is a machine tool accessory that uses a pair of bevel gear sets that mesh with each other to convert the vertical axis perpendicular to the table into a horizontal axis parallel to the table. Chinese patent literature (publication number CN 101100035A) discloses a "bevel gear right-angle milling head", which converts the vertical rotation of the CNC machine tool spindle into the horizontal rotation of the milling head through a pair of shafts and a pair of bevel gears for machining; However, when the right-angle milling head is installed, there is a coaxiality error between the vertical axis of the milling head and the spindle of the machine tool. This error will cause the bearing to bear additional radial force and greatly redu...

AI Technical Summary

Problems solved by technology

Chinese patent literature (publication number CN 101100035A) discloses a "bevel gear right-angle milling head", which converts the vertical rotation of the CNC machine tool spindle into the horizontal rotation of the milling head through a pair of shafts and a pair of bevel gears for machining; However, when the right-angle milling head is installed, there is a coaxiality error between the vertical axis of the milling head and the spindle of the machine tool. This error will cause the bearing to bear additional radial force and greatly reduce the life of the right-angle milling head.

At present, there is a method to directly rely on the key block to transmit the torque, but the centering of the key block is not good, and radial force will also be generated, which will cause the key block to wear sharply and lose the pulling force of the main shaft broach, resulting in axial displacement. The actual use effect is not good

[0003] Therefore, the right-angle milling head in the prior art has a coaxiality error between the rotating shaft and the machine tool spindle, which causes poor working conditions for components such as bearings and keys, resulting in unstable transmission, short service life of equipment, and low processing efficiency.

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