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Clamping device

A technology of clamping device and mounting table, applied in positioning device, gear tooth manufacturing device, clamping and other directions, can solve the problems of clamp flying off, weakening of restraint force, limited increase of clamping force, etc., so as to improve the clamping force. , the effect of improving safety

Active Publication Date: 2015-05-27
MITSUBISHI HEAVY IND MACHINE TOOL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned method of clamping the outer peripheral surface of the workpiece, centrifugal force acts on the jig (split collet, multiple claws) to weaken the binding force of the workpiece, so the rotational speed of the mounting table (workpiece) cannot be increased to above the specified speed
In the method of clamping the end face of the workpiece, although the clamping force can be increased by increasing the number of claws and mechanical arms, the increase in the clamping force is also limited due to the corresponding enlargement of the equipment.
In addition, in the method of clamping workpieces using claws, hooks, and robotic arms, if the fixture (claws, hooks, and robotic arm) is damaged or the fixture that fixes the fixture is temporarily loose, the clamp may be damaged. Fly off, call for increased safety

Method used

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no. 1 approach

[0082] For the clamping device of the first embodiment of the present invention, refer to figure 1 and figure 2 to illustrate.

[0083] The clamping device of the present embodiment is provided on a mounting table provided with a reference surface for centering a workpiece. Such as figure 1 As shown, the mount 30 has a hole 30a provided in the center, and a stepped portion 31 provided at the edge of the hole 30a. The stepped portion 31 includes a reference surface 32 and a side wall portion 33 connected to the outer peripheral portion of the reference surface 32 and extending upward. The upper end of the side wall portion 33 is connected to the upper surface portion 30 b of the mount 30 . The stepped portion 31 is formed to have substantially the same size as the outer diameter D2 of the workpiece 101 , and by disposing the workpiece 101 on the stepped portion 31 , the workpiece 101 can be centered. That is, the central axis of the workpiece 101 is arranged to coincide w...

no. 2 approach

[0097] For the clamping device of the second embodiment of the present invention, refer to image 3 Be explained. In the present embodiment, the workpiece is centered using a guide member and a split collet instead of the stepped portion of the mounting table. In this embodiment, an alternative to the mounting table included in the clamp device of the first embodiment described above is a device consisting of a mounting table, a split collet, and a guide member, and has the same components except for that. In this embodiment, the same reference numerals are assigned to the same components as those in the clamp device of the first embodiment, and description thereof will be omitted.

[0098] In the clamping device of this embodiment, if image 3 As shown, the workpiece 101 is arranged on the reference plane 111 of the mounting table 110 . In addition, a hole portion 110 a is provided at the center of the mounting table 110 . The clamping device has a split collet 120 and a ...

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Abstract

Provided is a clamping device having improved safety and an improved clamping force for clamping a work to an attaching table, said work having the inner circumferential surface thereof to be processed. The clamping device clamps a work (101) disposed on the reference surface (32) of an attaching table (30). The clamping device is provided with: a board-like fixing member (10), which has formed therein a hole (11a) that is larger than the inner diameter (D1) of the work (101) but smaller than the outer diameter (D2) of the work, and which is in surface-contact with the end surface (101a) of the work (101) disposed on the reference surface (32) of the attaching table (30); and a pressing force applicator (20), which has a cylindrical shape that surrounds the attaching table (30), and which applies a pressing force toward the end surface (101a) of the work (101) with respect to the fixing member (10).

Description

technical field [0001] The present invention relates to a clamping device for clamping a workpiece on a mounting table, and more particularly to a clamping device suitable for grinding and finishing the inner peripheral surface of a workpiece. Background technique [0002] The internal gear workpiece after heat treatment is fixed on the mounting table, and the tooth surface of the internal gear workpiece is ground and finished in this state, thereby improving the gear accuracy. As a method of fixing the internal gear workpiece, there are a method of clamping the outer peripheral surface of the internal gear workpiece and a method of clamping the end surface of the internal gear workpiece (for example, refer to Patent Document 1). [0003] As a method of clamping the outer peripheral surface of the internal gear workpiece, there is a method of using a split collet and a plurality of claws. In the method of using the split collet, the workpiece is placed on the upper surface ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23F23/06B23F23/08B23Q3/06
CPCB23F23/06B23F23/08B23Q3/062B23B31/025B23B31/30B23B31/10B23Q3/082
Inventor 越智政志柳瀬吉言
Owner MITSUBISHI HEAVY IND MACHINE TOOL CO LTD
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