CNC lathe dual-channel water-cooled electric spindle

Abstract

The invention discloses a two-channel water-cooling electric spindle of a digital controlled lathe and belongs to a machine tool component device. A hollow spindle is supported and mounted at two ends of a spindle hole of a spindle box by bearings in a front bearing support and a rear bearing support; a spindle drive mechanism mainly consists of a rotor and a stator; the rotor is sleeved on the spindle; an angle coder device is mounted at the rear end of the spindle by a connecting sleeve; a brake device comprises a brake disc connected to the rear end of the connecting sleeve and a hydraulic brake which is mounted at the rear end of the spindle box; a cooling system comprises a spindle cooling mechanism and a bearing cooling mechanism; the spindle cooling mechanism mainly consists of spindle cooling water passages which are arranged between the spindle box and a stator connecting sleeve and distributed between the front end and the rear end of the stator connecting sleeve; the bearing cooling mechanism mainly consists of a bearing cooling water passage between the spindle box and the front bearing support. Two-channel cooling water circulation is formed for the spindle and the bearings, the radiating effect is good, the stability is high, and the defect that the radiating effect of the existing air cooling electric spindle cannot meet the requirement of high-speed large torque processing is overcome.

Description

technical field [0001] The invention belongs to the field of machine tool parts and devices, and in particular relates to a double-channel water-cooled electric spindle of a numerical control lathe. Background technique [0002] At present, the drive chain of the main shaft structure of ordinary lathes is too long, the external dimension is large, and the transmission torque is small, which affects the transmission accuracy and positioning accuracy of the main shaft of the lathe. When it is necessary to stop processing, the main shaft cannot stop rotating immediately, and the controllability is poor. In order to solve the defects of the above-mentioned ordinary lathe spindle, the applicant of this patent once developed a precision CNC lathe air-cooled electric spindle device, applied for a Chinese patent with the patent number ZL201220337475.6 and the authorized announcement number CN202667675U, and in 2013 Authorization announcement on January 16. Although the air-cooled e...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defect that the heat dissipation effect of the existing lathe air-cooled electric spindle device cannot meet the needs of high-speed and high-torque machining, and to provide a dual-channel water-cooled electric spindle for CNC lathes with good heat dissipation performance

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