Roll ball high-speed milling electric main shaft

Abstract

The invention relates to a roll ball high-speed milling electric main shaft, in particular to an electromechanically-integrated main shaft device which integrates a rolling bearing, a cooling device, an automatic cutter changing system and a motor driver. An upper bearing component (6) is fixed in an internal through hole of an upper bearing seat component (5) through an upper bearing locking nut (17); the front end of a step of the upper bearing seat component (5) is fixed together with the rear end of a machine body component (9); a lower bearing pressing ring (16) is fixed at the front end of a lower bearing component (10) through a lower bearing locking nut (15); and an encoder (18) for measuring rotating speeds is fixed at the rear end of a shaft core main body of a shaft core component (7). The electric main shaft has an adjustable rotating speed, high accuracy at a high rotating speed, advantages of insufficient axial and radial rigidity and the like and long service life and is convenient to popularize and apply.

Description

technical field [0001] The invention relates to a mechanical processing equipment, in particular to a mechatronic spindle device integrating a rolling bearing, a cooling device, an automatic tool changing system and a motor drive. Background technique [0002] In the prior art, the stator of the general electric spindle uses a non-variable frequency power supply, so the working speed of the rotor cannot be changed, the function is single, and the rotor is easily damaged under rapid start, which affects the service life of the electric spindle. In addition, for special belt For the electric spindle required by the milling function, the supporting force provided by the bearing is insufficient, so that the axial and radial directions of the spindle have sufficient rigidity when the spindle is running at high speed. Furthermore, many sundries such as sewage and cutting chips easily enter the main shaft during milling, which will block the interior of the main shaft and seriously...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the stator of the general electric spindle uses a non-variable frequency power supply, so the working speed of the rotor cannot be changed, the function is single, and the rotor is easily damaged under rapid starting, which affects the service life of the electric spindle. In addition, for special belt For the electric spindle required by the milling function, the supporting force provided by the bearing is insufficient, so that the axial and radial directions of the spindle have sufficient rigidity when the spindle is running at high speed

Furthermore, during milling, a lot of sundries such as sewage and cutting chips easily enter the main shaft, which will block the interior of the main shaft and seriously affect the service life of the main shaft.

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