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Numerically-controlled machine tool electric spindle adopting integrated bearings

An electro-spindle and bearing technology, applied in the field of numerical control, can solve the problems of unreasonable setting of electro-spindle, affecting processing quality, etc., and achieve the effects of reducing vibration and noise, uniform distribution, and avoiding improper matching.

Inactive Publication Date: 2018-09-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an electric spindle of a numerically controlled machine tool using an integrated bearing, which can solve the problem in the prior art that the processing quality and precision are affected by the unreasonable setting of the electric spindle

Method used

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  • Numerically-controlled machine tool electric spindle adopting integrated bearings

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Embodiment Construction

[0021] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific embodiments.

[0022] An embodiment of the present invention provides an electric spindle of a CNC machine tool using integrated bearings, such as figure 1 As shown, it includes: left bearing seat 1, right bearing seat 2, angular contact ball bearing 3, rotor winding 4, stator winding 5, main shaft 6, housing 7, cooling tank 8, bearing preload linkage device 9.

[0023] A cooling tank 8 is arranged inside the housing 7 , and the cooling tank 8 is connected to the cooling device through a cooling tank inlet 81 and a cooling tank outlet 82 . A stator winding 5 is sheathed inside the casing 7, and the stator winding 5 is connected to the electric spindle drive module through a power adapter. The main shaft 6 is provided with a rotor winding 4, which is connected to th...

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Abstract

The invention discloses a numerically-controlled machine tool electric spindle adopting integrated bearings, and relates to the field of numerical control. The numerically-controlled machine tool electric spindle can solve the problem that the machining quality and the machining accuracy are influenced by unreasonable electric spindle arrangement in the prior art. The numerically-controlled machine tool electric spindle comprises a motor shell and a spindle body, a cooling groove is formed inside a shell, and a stator winding is sleeved with the inner side of the shell and is connected with anelectric spindle driving module. The spindle body and angular contact ball bearings are combined and assembled to form inner-ring-free integrated shaft and bearings, the spindle body is sleeved witha rotor winding, and the rotor winding is connected with the electric spindle driving module. The two ends of the shell are provided with bearing blocks, the bearing block at the right end is fixedlyconnected with the shell through a fixing bolt, each pair of angular contact ball bearings and the corresponding pair of bearing blocks are installed in a mirror image manner, pre-tightening bolts onthe outer sides of each pair of bearing blocks are connected through cooperation of large and small gears, and a bearing pre-tightening linkage device is formed.

Description

technical field [0001] The invention relates to the field of numerical control, in particular to an electric spindle of a numerical control machine tool using integrated bearings. Background technique [0002] High-speed machining technology is one of the contemporary advanced manufacturing technologies. The prerequisite for the development and application of high-speed machining technology is to have advanced CNC machine tools with excellent performance. High-end CNC machine tools and their key technologies are one of the technical foundations and development directions of the equipment manufacturing industry. It is an important indicator to measure the manufacturing level of a country. [0003] The electric spindle is one of the core functional components of the CNC machine tool. In the traditional electric spindle structure design, it is necessary to solve the installation and positioning of the bearing on the spindle, as well as the precision assembly of the inner ring o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q1/70B23Q11/12
Inventor 苏川陈蔚芳孙朋梁睿君罗勇沈雨苏陈奇伟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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