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Motorized spindle of machine tool

A technology for electric spindles and machine tools, which is applied in the direction of metal processing machinery parts, large fixed members, measuring/indicating equipment, etc. It can solve the problem that the glass code disc of the encoder is easily broken, the electric spindle cannot be used normally, and the stability of the encoder is reduced. problems, to achieve the effect of simplifying maintenance and replacement operations

Inactive Publication Date: 2020-03-10
蒂森克虏伯动力部件(大连)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the protection level of this encoder is not high, which will cause the encoder stability to decrease as it is used
In addition, this encoder installation method cannot support soft connections in narrow spaces
Therefore, when the encoder is stressed in the axial direction, the glass code disc of the encoder is very easy to break, which leads to the malfunction of the electric spindle

Method used

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  • Motorized spindle of machine tool
  • Motorized spindle of machine tool
  • Motorized spindle of machine tool

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Embodiment Construction

[0022] Hereinafter, embodiments of the present invention are described with reference to the drawings. The following detailed description and accompanying drawings serve to illustrate the principles of the present invention. The present invention is not limited to the described preferred embodiments, but the scope of the present invention is defined by the claims. The invention will now be described in detail with reference to exemplary embodiments, some examples of which are illustrated in the accompanying drawings. The following description is made with reference to the drawings, and the same reference numerals in different drawings represent the same or similar elements unless otherwise indicated. The aspects described in the following exemplary embodiments do not represent all aspects of the present invention. Rather, these aspects are merely examples of systems and methods of the various aspects of the invention as recited in the appended claims.

[0023] An electric sp...

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Abstract

The invention relates to a motorized spindle of a machine tool. The motorized spindle of the machine tool comprises a shell, a motor, a rotation shaft, a master gear and an encoder, wherein the motoris arranged in the shell and comprises a stator and a rotor, and the stator of the motor is fixed on the shell; the rotation shaft is arranged in the shell and can be driven by the motor to rotate around an axis of rotation, and the rotor of the motor twists and is coaxially connected to the rotation shaft; the master gear is arranged at one axial end part of the rotation shaft in a mode of torsion resistance and can rotate with the rotation shaft around the axis of rotation; the encoder is connected to the shell in the mode of torsion resistance, and a predetermined radial clearance exists between the encoder and the master gear; and axial position of the encoder overlaps at least partially with the axial position of the master gear.

Description

technical field [0001] The invention relates to an electric spindle of a machine tool. More specifically, the present invention relates to electrospindles of machine tools employing non-contact encoders. Background technique [0002] The electric spindle integrates the machine tool shaft and the shaft motor. The electric spindle can simplify the transmission structure of the machine tool. It is known that in a CNC grinding machine, due to the compact structure of the electric spindle and the limited installation space inside the electric spindle, an incremental encoder without a built-in bearing is used. However, the degree of protection of such an encoder is not high, so that the stability of the encoder decreases as it is used. In addition, this encoder installation method cannot support flexible connections in narrow spaces. Therefore, when the encoder is stressed in the axial direction, the glass code disc of the encoder is easily broken, thus causing the electric sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B19/02B23Q17/00
CPCB23Q1/70B23Q17/00
Inventor 刘宝强
Owner 蒂森克虏伯动力部件(大连)有限公司
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