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Intelligent monitoring and controlling system for pretightening force and pretightening displacement of high-speed precise main shaft and control method thereof

An intelligent monitoring system and pre-tightening force technology, applied in manufacturing tools, metal processing equipment, measuring/indicating equipment, etc., to achieve high positioning accuracy, high rigidity, and fast response

Active Publication Date: 2017-06-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, the existing control devices are only based on closed-loop control of preload force or closed-loop control of preload displacement.

Method used

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  • Intelligent monitoring and controlling system for pretightening force and pretightening displacement of high-speed precise main shaft and control method thereof
  • Intelligent monitoring and controlling system for pretightening force and pretightening displacement of high-speed precise main shaft and control method thereof
  • Intelligent monitoring and controlling system for pretightening force and pretightening displacement of high-speed precise main shaft and control method thereof

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Embodiment Construction

[0036] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0037] see Figure 1 to Figure 5 , an intelligent monitoring system for high-speed precision spindle preload and preload displacement, comprising a spindle housing 21, a spindle 10, a front sleeve assembly, a rear sleeve assembly, a piezoelectric actuator assembly, and a data acquisition and control system;

[0038] The main shaft housing 21 is a cylindrical structure with an inner cavity for installation, and the main shaft housing 21 is provided with an installation inner cavity for installing the front sleeve assembly, the rear sleeve assembly, and the main shaft;

[0039] The front sleeve assembly includes a front sleeve 18, a positioning end cover 19, and a front end cover 17. The front sleeve 18 is fixedly installed in the main shaft ho...

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Abstract

The invention discloses an intelligent monitoring and controlling system for the pretightening force and pretightening displacement of a high-speed precise main shaft. The intelligent monitoring and controlling system for the pretightening force and pretightening displacement of the high-speed precise main shaft comprises a main shaft shell, a front sleeve assembly, a back sleeve assembly, multiple piezoelectric actuator assemblies, a main shaft and a data collection and control system. The front sleeve assembly is fixedly installed inside the main shaft shell. The back sleeve assembly is installed in the main shaft shell through cage guide bearings, and the back sleeve assembly slides along the axis of the main shaft. The main shaft is coaxially and fixedly installed in the front sleeve assembly and the back sleeve assembly through bearings. The multiple piezoelectric actuator assemblies parallel to the main shaft are evenly distributed on the main shaft shell along the circumference of the main shaft and used for exerting the axial load on a back sleeve. The intelligent monitoring and controlling system has the functions of online monitoring and controlling the pretightening force and pretightening displacement of a main shaft-bearing system at the same time.

Description

technical field [0001] The invention relates to the field of on-line monitoring and control of the pretightening force of a high-speed precision spindle-bearing system, in particular to an intelligent monitoring system for the pretightening force and pretightening displacement of a high-speed precision spindle and a control method thereof. Background technique [0002] The main shaft is the core functional part of the machine tool, and its performance directly affects the performance of the machine tool. The preload of high-speed precision spindle bearings is the most important factor affecting the rigidity, precision and reliability of the spindle. High-speed precision bearings are extremely sensitive to changes in preload. Therefore, during the processing of the spindle, the preload and displacement of the spindle-bearing system are monitored and controlled online according to the spindle speed, temperature rise, load, and initial assembly conditions, so as to realize the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/00
CPCB23Q17/005
Inventor 胡高峰高卫国张大卫
Owner TIANJIN UNIV
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