Clamping fixture for externally threaded workpieces

A technology of workpiece clamping and external thread, which is applied in the direction of manufacturing tools, metal processing machinery parts, clamping, etc., can solve the problems of difficult positioning accuracy and low production efficiency, and achieve the effect of solving the difficult control of positioning accuracy

Inactive Publication Date: 2015-04-01
CHONGQING FENGYUN MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a clamping fixture for externally threaded workpieces, which has positioning accuracy for externally threaded workpieces, in view of the disadvantages of difficult control of positioning accuracy and low production efficiency in the indirect clamping of externally threaded workpieces through copper bushings in the prior art Accurate, high production efficiency

Method used

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  • Clamping fixture for externally threaded workpieces
  • Clamping fixture for externally threaded workpieces
  • Clamping fixture for externally threaded workpieces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment one is basically as attached figure 1 , figure 2 , image 3 Shown: the external thread workpiece clamping fixture, including the rotating shaft 1, the lock nut 2 and the clamping plate 3, the rotating shaft 1 and the clamping plate 3 are detachably connected, the rotating shaft 1 and the locking nut 2 are threaded; the rotating shaft 1 From left to right, there are clamping part, threaded part, shaft neck and stop part; the clamping part is cylindrical, and there are three clamping surfaces on the clamping part, the crotch is disc-shaped, and the threaded part and The diameters of the blocking parts are the same, and the diameter of the shaft neck is smaller than that of the threaded part. The threads of the threaded portion match the threads of the lock nut 2 . The clamping plate 3 is a cuboid, and the front of the clamping plate 3 is provided with three longitudinally arranged threaded blind holes, and the three threaded blind holes are M8, M12, M24 on ...

Embodiment 2

[0022] The difference between the second embodiment and the first embodiment is that the stop part of the rotating shaft 1 is a dovetail block, and the chute is a dovetail groove matching the dovetail block.

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PUM

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Abstract

The invention discloses a clamping fixture for externally threaded workpieces. The clamping fixture comprises a rotary shaft, a locking nut and a clamping plate. The rotary shaft is detachably connected with the clamping plate, is connected with the locking nut in a threaded manner and sequentially comprises a clamping portion, a threaded portion, a journal and a stopping portion, and the diameter of the journal is smaller than that of the threaded portion; a plurality of threaded blind holes which are longitudinally arrayed and have different diameters are formed in the front surface of the clamping plate, a slide groove for accommodating the stopping portion is formed in the back surface of the clamping plate, and the clamping portion of the rotary shaft is provided with a plurality of clamping surfaces. The clamping fixture has the advantage that shortcomings of difficulty in controlling the positioning precision and low production cost due to the fact that externally threaded workpieces are indirectly clamped by copper bushes in the prior art can be overcome by the aid of the clamping fixture.

Description

technical field [0001] The invention relates to the field of workpiece clamping, in particular to an external thread workpiece clamping fixture. Background technique [0002] In the processing and maintenance of shaft parts, it is sometimes necessary to process external thread parts. However, externally threaded parts cannot be directly clamped by a three-jaw chuck, etc. If the diameter is clamped, it is easy to pinch the threads of the externally threaded parts and affect the fit of the parts. In the prior art, a copper bushing is generally installed on the surface of the processed external threaded part, and then the external threaded part is indirectly clamped by clamping the copper bushing. In the prior art, the indirect clamping of externally threaded workpieces through copper bushings has the disadvantages of difficult control of positioning accuracy and low production efficiency. Contents of the invention [0003] The technical problem to be solved in the present ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/00
CPCB23Q3/12
Inventor 孙时彬
Owner CHONGQING FENGYUN MACHINERY MFG
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