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Double-tensioning centering clamp

A centering fixture and tensioning technology, which is applied in the direction of expanding the mandrel, can solve problems such as workpiece deformation, and achieve the effects of improving the processing zero degree, high installation and positioning efficiency, and uniform force application

Active Publication Date: 2021-03-12
青岛涵锐精密机械有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the existing fixtures are difficult to accurately locate and fix the stepped thin-walled workpieces and easily cause deformation of the workpieces, the present invention specifically provides a double-tensioning centering fixture for the structural characteristics of the stepped thin-walled workpieces , through two sets of drive systems, drive two rubber expansion sleeves to fix the different inner diameter surfaces of the workpiece, realize precise positioning and stable clamping of the workpiece, high installation and positioning efficiency, and help improve the processing zero degree of the workpiece

Method used

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  • Double-tensioning centering clamp

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Embodiment 1

[0041] Such as Figure 1-Figure 5 A double tensioning centering fixture is shown, which includes: a fixed assembly fixedly connected to the machine tool, a first rubber expansion sleeve driving assembly for positioning the upper inner diameter surface of the thin-walled workpiece 3 with a step hole, and a first rubber expansion sleeve drive assembly for positioning the step hole The second rubber expansion sleeve drive assembly on the lower inner diameter surface of the thin-walled workpiece 3. The first rubber expansion sleeve drive assembly and the second rubber expansion sleeve drive assembly respectively pass the lifting movement relative to the fixed assembly, thereby driving the corresponding rubber expansion sleeve to tighten the different inner surfaces of the workpiece, so as to realize the precise positioning of the thin-walled workpiece with stepped holes .

[0042] In this example, Figure 10 A specific structure of a thin-walled workpiece 3 with a stepped hole i...

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Abstract

The invention discloses a double-tensioning centering clamp which comprises a fixing assembly, a first rubber tensioning sleeve driving assembly and a second rubber tensioning sleeve driving assembly.The fixing assembly comprises a flange plate and a taper body, the first rubber tensioning sleeve driving assembly comprises a pull shaft body, a lower rubber tensioning sleeve, a coupling ring for connecting the pull shaft body and the lower rubber tensioning sleeve, and a first threaded pull sleeve connected to the lower end of the pull shaft body, the second rubber tensioning sleeve driving assembly comprises an upper rubber tensioning sleeve sleeving the top of the taper body, a pull rod clamped to the upper rubber tensioning sleeve, and a second threaded pull sleeve connected with the lower end of the pull rod, and the second threaded pull sleeve penetrates through the taper body, the pull shaft body and the first threaded pull sleeve. Under the action of external force, the first threaded pull sleeve drives the lower rubber tensioning sleeve to move downwards and tension the lower inner diameter surface of a workpiece through the pull shaft body and the coupling ring, and the second threaded pull sleeve drives the upper rubber tensioning sleeve to move downwards and tension the upper inner diameter surface of the workpiece through the pull rod, so that the whole positioningof the workpiece is realized. The clamp is stable in workpiece clamping and accurate in positioning.

Description

technical field [0001] The invention relates to the technical field of processing thin-walled workpieces with stepped holes, in particular to a double-tensioning centering fixture for fixing thin-walled workpieces with stepped holes. Background technique [0002] In the machining industry, in order to realize the positioning and processing of different types of workpieces, various types of fixtures appear on the market. However, there are few special fixtures designed for thin-walled workpieces with stepped holes at present, and the types are single, which affects the machining accuracy of thin-walled workpieces with stepped holes. [0003] At present, the following two methods are mainly used to locate the outer circle of the workpiece with stepped hole and thin wall: the first method is to use a three-jaw chuck to directly fix the inner hole of one end of the workpiece with stepped hole. After clamping with a three-jaw chuck, on the one hand, it is necessary to calibrate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B31/40
CPCB23B31/4053
Inventor 谭传立尚周利
Owner 青岛涵锐精密机械有限公司
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