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Loading device for hydrostatic spindle system

A technology of hydrostatic spindle and loading device, which is applied in the direction of measuring device, testing of mechanical parts, testing of machine/structural parts, etc. Accurate and high-precision linear motion control, simple structure, stable and reliable effect

Inactive Publication Date: 2019-03-19
BEIJING UNIV OF TECH
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AI Technical Summary

Problems solved by technology

Since the spindle system will be affected by the change of external cutting force, the vibration caused by the fluctuation of the oil film in the spindle system and the vibration caused by the imbalance of the spindle system itself during the working process, these forces will cause a certain degree of deformation of the spindle system. The deformation will seriously reduce the machining accuracy and adversely affect the quality of the processed workpiece

Method used

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  • Loading device for hydrostatic spindle system
  • Loading device for hydrostatic spindle system
  • Loading device for hydrostatic spindle system

Examples

Experimental program
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Embodiment Construction

[0016] The technical solution will be further elaborated below in conjunction with the accompanying drawings.

[0017] figure 1 As shown, a loading device for a hydrostatic spindle system, the device includes a spindle rotor 1, a radial loading plate 2, a rolling bearing 3, an axial loading plate 4, a motor bracket 5, and a turn-back electric cylinder 6 in the radial direction , radial thrust rod 7, first pressure sensor 8, axial thrust rod 9, second pressure sensor 10, fold-back electric cylinder 11 and workbench 12 in the axial direction; the motor drives the hydrostatic spindle rotor 1 to rotate , the inner ring of the rolling bearing 3 and the main shaft rotor 1 are interference fit, the radial loading plate 2 and the axial loading plate 4 are connected with the outer ring of the rolling bearing 3, the radial loading plate 2 and the foldback electric motor in the radial direction The cylinders 6 are connected by a radial thrust rod 7, and a first pressure sensor 8 is inst...

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Abstract

The invention discloses a loading device for a hydrostatic spindle system. The device is provided with a hydrostatic spindle rotor, a rolling bearing, two pressure sensors, two foldback linear electric cylinders and a loading control system, wherein the foldback linear electric cylinders are the radial foldback electric cylinder and the axial foldback electric cylinder; the hydrostatic spindle rotor is in interference fit with an inner ring of the rolling bearing, an outer ring of the rolling bearing is connected with a radial loading device and an axial loading device separately, the axial loading plate is provided with four axial loading contacts, and the two pressure sensors are installed on a radial push rod and an axial push rod respectively, connected with the loading control system,and used for detecting the size of loading force in real time. The loading control system is connected with the two foldback electric cylinders, the loading control system controls the foldback linear electric cylinder displacement movement and thrust size, and then radial and axial real-time loading on the spindle system is achieved.

Description

technical field [0001] The present invention designs a loading device for the hydrostatic spindle system, in particular, a device that can accurately load the hydrostatic spindle in real time in the radial and axial directions during the working process. Background technique [0002] In the process of precision and ultra-precision machining, the radial stiffness and axial stiffness of the hydrostatic spindle system affect the machining accuracy to a great extent. Since the spindle system will be affected by the change of external cutting force, the vibration caused by the fluctuation of the oil film in the spindle system and the vibration caused by the imbalance of the spindle system itself during the working process, these forces will cause a certain degree of deformation of the spindle system. The deformation will seriously reduce the machining accuracy and adversely affect the quality of the processed workpiece. Therefore, it is of great significance to improve the stiff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 陈东菊王浩李源
Owner BEIJING UNIV OF TECH
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