Vibration Stop Device

a technology of vibration stopper and rotating part, which is applied in the direction of positioning apparatus, metal-working machine components, manufacturing tools, etc., can solve the problems of not being able to avoid the pressure contact of a partial region of the holding part, no particular countermeasure, and no particular countermeasure taken, so as to achieve the effect of easy correction of the precise error of the work

Inactive Publication Date: 2015-11-19
MATSUURA MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012]To achieve the object, the present invention has the following basic structure:
[0013]A vibration stop device, a plurality of holding parts for vibration stop holds an outer circumferential surface of a columnar work in a process stage under a pressure contact state with pressure supplied from a hydraulic cylinder, and pressure contact position on the outer circumferential surface is changed by rotation of the work,
[0014]wherein an angular range formed by both ends of each of the holding parts for vibration stop is larger than an angular range of a processing region regarding an angular range based on a position of an axis of the rotation.
[0015]In the present invention having the basic structure, the pressure contact region of the holding part of the vibration stop device never introduces into the recess in the processing region, and so, the problem in the rotation of the work due to the intrusion can be prevented.
[0016]Moreover, in the examples described later, the position of the holding parts can be independently adjusted, whereby the precision error of the work can be easily corrected.

Problems solved by technology

Thus, it cannot be avoided to make a partial region of the holding part come into pressure contact.
On the other hands, the pressure contact state causes a problem that the pressure contact region of the holding part intrudes into a region recessed by the processing, in the other words, in a recess, and even if the work is to be rotated along a columnar center axis for the next processing, such rotation is hindered due to the intrusion.
However, in the prior art, no particular countermeasure has been taken for the problem caused by the pressure contact region of the holding part intruding into the recesses that has been formed by the processing.

Method used

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Examples

Experimental program
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Effect test

example 1

[0036]As shown in FIG. 4, the example 1 has a feature that the holding parts for vibration stop 11 are each independently interlocked with a hydraulic cylinder 31, and approaching and separating of the holding parts for vibration stop 11 to and from the work 2 are achieved by changing the oil pressure.

[0037]When a precision error occurs in the work 2, the pressure contact state created by a vibration stop device needs to be immediately released, and the processing region 21 where the precision error has occurred needs to be rotated to an operation position on a main shaft side.

[0038]In such a case, the conventional technique shown in FIG. 5 and the embodiments shown in FIGS. 1 to 3 require cumbersome control such as an operation of the pressure transmission part 12, and movement of the third holding part for vibration stop 11.

[0039]In the example 1, the rotation state can be achieved by immediately releasing, from each of the holding parts for vibration stop 11, pressure supplied fr...

example 2

[0041]As shown in FIG. 4, the example 2 has a feature that a relief valve 34 is provided in juxtaposition with the solenoid valve 33 which supplies the oil pressure to the vibration stop device, in a hydraulic circuit that creates the pressure contact state.

[0042]Specifically, a hydraulic cylinder 31, a pressure reducing valve 32 for adjusting the pressure, and the solenoid valve 33 for turning ON and OFF transmission of reduced pressure are used as in the conventional technique, and the relief valve 34 in parallel with an oil pressure circuit is further provided.

[0043]In the example 2 described above, even if the vibrating state of the work 2 is changed and consequently the amount of pressure required for the pressure contact of the holding part for vibration stop 11 changes by turning ON the relief valve 34, the change in the pressure can be compensated by the relief valve 34 turning on, so that the pressure transmitted to the hydraulic cylinder 31 can be reduced as much as possib...

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PUM

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Abstract

A vibration stop device that can prevent a problem caused by intrusion of a pressure contact region of a holding part of the vibration stop device into a recess of a processing region of a work includes a plurality of holding parts for the vibration stop which hold an outer circumferential surface of a columnar work in a process stage under a pressure contact state with pressure supplied from a hydraulic cylinder, and a pressure contact position on the outer circumferential surface is changed by rotation of the work, and an angular range formed by opposite ends of each of the holding parts for the vibration stop is larger than an angular range of the processing region regarding an angular range based on a position of an axis of the rotation.

Description

TECHNICAL FIELD[0001]The present invention is relates to a vibration stop device necessary for stopping vibration of a work in a process stage.BACKGROUND OF THE INVENTION[0002]Accurate processing on a work in a process stage requires the work to be prevented from vibrating.[0003]The work is divided into a processing region and a non-processing region along a circumferential direction, and in many cases, moves together with a main shaft in a state where a holding part for vibration stop is in pressure contact with an already processed region of the work.[0004]As shown in FIG. 5, in the pressure contact state of the holding part of a prior art, a pressure contact region is too small. Thus, it cannot be avoided to make a partial region of the holding part come into pressure contact.[0005]On the other hands, the pressure contact state causes a problem that the pressure contact region of the holding part intrudes into a region recessed by the processing, in the other words, in a recess, ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B25B5/06B23Q3/08B25B5/14
CPCB25B5/064B23Q3/08B25B5/147B23Q11/0032B23Q1/76B23Q3/082
Inventor AMAYA, KOICHIIIZUKA, SYUJIIWAI, KIYOTAKA
Owner MATSUURA MACHINERY
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