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Centering device and centering method

A centering device and eccentric technology, applied in positioning devices, measuring devices, clamping, etc., to save space, improve durability, and achieve the effect of correcting accuracy

Inactive Publication Date: 2011-08-24
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to attach a gauge for measuring the amount of eccentricity to such a member with high precision.

Method used

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  • Centering device and centering method
  • Centering device and centering method
  • Centering device and centering method

Examples

Experimental program
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Embodiment Construction

[0043] based on the following Figure 1 to Figure 16 Embodiments of the present invention will be described.

[0044] Figure 1 ~ Figure 3 The centering device of the present invention is shown. The centering device includes: a rotary table 1 on which a workpiece W is placed; a drive unit 2 for rotating the rotary table 1 around its axis; Inner ring or outer ring, etc.) The impact force imparting structure 3 that imparts impact force.

[0045] The drive unit 2 includes: a bearing structure 6 that supports the center shaft 5 of the turntable 1 so as to be rotatable about its axis, a drive motor 7 , an output shaft 8 of the drive motor 7 and the center shaft 5 Linkage members 9 linked together. The interlocking member 9 includes: a sprocket 11 mounted on the central shaft 5 of the turntable 1; a sprocket 12 mounted on the output shaft 8 of the driving motor 7; and a chain wound around the sprockets 11, 12. (Illustration omitted). The bearing structure 6 and the driving moto...

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Abstract

Provided are a centering device simplified as a whole and capable of stably centering a work and a centering method. The eccentric amount of a work (W) rotated by means of a rotary table (1) is detected. A centering operation for correcting the eccentric amount is performed by applying an impact force to the work (W) by a hammer means (25). The centering operation is repeated until the eccentric amount reaches a preset convergence target value.

Description

technical field [0001] The invention relates to a centering device and a centering method. Background technique [0002] When manufacturing an annular structure (ring-shaped workpiece) such as an inner ring or an outer ring of a bearing, a turning process or a grinding process is performed on the ring-shaped workpiece. In addition, in such a process, it is necessary to center the ring-shaped workpiece (workpiece) by a centering device. [0003] At present, when grinding a ring-shaped workpiece such as a large bearing, the workpiece is temporarily set on the grinding machine, and a skilled operator places a gauge for measuring eccentricity on the outer periphery of the workpiece, and the workpiece While rotating, the deviation during one rotation is measured. Then, predetermined centering is carried out by tapping with a hammer near the maximum position of the deviation. That is, in the manual centering work performed by such workers, skilled workers measure the eccentrici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/18B23Q17/22
CPCB23Q17/2291B23Q3/183G05B19/404G01M1/02B23Q3/00B23Q3/18B23Q17/22
Inventor 原田晴久名仓元治
Owner NTN CORP
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