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Indexing fixture

A fixture and indexing technology, used in clamping, clamping devices, manufacturing tools, etc., can solve the problems of insufficient positioning accuracy, unnecessary clearance errors, affecting machining accuracy, etc., to reduce vibration, improve machining accuracy, and improve The effect of machining accuracy

Active Publication Date: 2016-10-19
贵州安吉华元科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current defect of this technical solution is that the shape of the workpiece is different, and the surface is uneven, and because the pressing device only has the rough pressing effect of the pressing hydraulic cylinder, there is an unnecessary gap error between the pressing plate and the workpiece. Affects machining accuracy and insufficient positioning accuracy
And because the existing pressing plate and the workpiece rotate together, the pressing plate will exert a radial force on the pressing device in contact with it, especially the radial force will be transmitted to the piston rod of the pressing hydraulic cylinder, resulting in the failure of the pressing action, which greatly Affect machining accuracy and bring potential safety hazards

Method used

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Embodiment Construction

[0016] according to Figure 1 to Figure 4 , Figure 6 to Figure 8 As shown, the indexing fixture embodiment of the present invention includes a clamp body 100, the clamp body 100 has a housing space 900, the clamp body 100 is provided with a supporting device 200 and a pressing device 300, and the pressing device 300 includes a pressing plate 310, a pressing hydraulic pressure Cylinder 320, piston rod 330, connecting rod 340, compression hydraulic cylinder 320 and clamp body 100 are fixedly assembled, piston rod 330 is axially movable relative to compression hydraulic cylinder 320, and piston rod 330 is driven by compression hydraulic cylinder 320 to move axially , the connecting rod 340 and the piston rod 330 are axially fixedly assembled, the connecting rod 340 and the piston rod 330 are axially adjusted relative to each other, the connecting rod 340 and the pressure plate 310 are axially fixedly assembled, the pressure plate 310 is rotatably assembled relative to the connec...

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Abstract

The invention provides an indexing fixture. After a workpiece is mounted on a supporting device, a compressing hydraulic cylinder acts to roughly compress the workpiece; the workpiece is then fed by an operating link and is further tightly compressed; an acting positioning gap of the compressing hydraulic cylinder is filled by fine compression, positioning accuracy is improved, vibration is decreased during machining of the workpiece, and machining precision is improved. A rolling ball is accommodated between a connecting plate groove and a compressing plate groove and is in rolling friction with both the grooves; both the grooves have positioning action on the rolling ball; after a compressing plate and the workpiece rotate together, the compressing plate has a slight radial displacement relative to the operating link; the radial force negative influence of the compressing plate upon the operating link is decreased through the rolling friction, axial concentricity of the operating link is kept, and machining precision is improved.

Description

technical field [0001] The invention relates to a fixture, in particular to a fixture matched with a machine tool for indexing and processing a workpiece. Background technique [0002] The Chinese patent No. 201420111322.9 records the indexing fixture, which includes a clamp body, which has an accommodation space, and the workpiece is loaded in the accommodation space. The clamp body is provided with a supporting device and a pressing device, and the supporting device is used to support the workpiece. After the supporting device supports the workpiece, the pressing device exerts pressure on it to compress the workpiece and then completes the positioning. The current defect of this technical solution is that the shape of the workpiece is different, and the surface is uneven, and because the pressing device only has the rough pressing effect of the pressing hydraulic cylinder, there is an unnecessary gap error between the pressing plate and the workpiece. Affect the machining...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q3/08B23Q16/10
CPCB23Q3/082B23Q16/10B23Q16/102B23Q2703/04
Inventor 潘茜茜
Owner 贵州安吉华元科技发展有限公司
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