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A test bar marking device for tensile test

A scribing device and tensile test technology, applied in workshop equipment, manufacturing tools, etc., can solve the problems of low work efficiency, troublesome operation, uneven scale and non-standard, etc., to improve accuracy and work efficiency, improve work efficiency, The effect of omitting scratches

Active Publication Date: 2015-12-02
中国航空工业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] First, the scratch depth is not easy to control
The existing marking machine is marked by scratches, and the existing marking machine cannot guarantee the depth of the marking knife. If the tester does not grasp the strength and draws deeply, it will affect the performance of the metal itself and cause The sample breaks prematurely, which affects the test results, wastes time and delays production, and requires refilling and wastes materials
[0004] Second, poor marking accuracy
Do not stop when the line is shaking. Once there is a pause, the scale drawn will not be uniform or standard.
The speed of shaking the handle will also affect the accuracy of marking, which will cause a large error
The result is even more inaccurate
[0005] Third, troublesome operation
After marking the line, you need to unscrew the screw to remove it. The operation is very troublesome and the work efficiency is low.

Method used

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  • A test bar marking device for tensile test

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Effect test

Embodiment Construction

[0010] The present invention will be described in further detail below. see figure 1 , a test bar marking device for tensile test, it is made up of drawing line frame assembly, base plate 13 and 2 hinges 5, and 2 hinges 5 make drawing line frame assembly and base plate 13 form hinged connection; Draw line The frame assembly is composed of a wire drawing frame, 4 scroll screws 1, 2 scrolls 2, 4 handles 3, 5 to 50 nylon threads 4 and a handle 7; the wire drawing frame is a rectangular frame formed by integral processing, and it has 2 A long frame 11 and two short frames 12, on the lower surfaces of the two long frames 11, there is respectively a reel installation groove 8 extending along the length direction and through, on the outer surfaces of the two long frames 11, close to the long The two ends of the frame 11 respectively have a threaded hole connected with the spool mounting groove 8, and the 4 spool screws 1 are respectively screwed in the 4 threaded holes at the two en...

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PUM

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Abstract

The invention belongs to the technology of strength test and relates to a modified test rod scribing device for tension test. The test rod scribing device is characterized by comprising a scribing frame component, a bottom plate (13) and two hinges (5), and the scribing frame component and the bottom plate (13) are in hinged connection through the two hinges (5). The scribing frame component is composed of a scribing frame, four scroll screws (1), two scrolls (2), four hand shanks (3), five to fifty nylon wires (4) and a handle (7). By the test rod scribing device for tension test, scratches on test rods can be reduced, affection on test results from the scratches is eliminated, and scribing accuracy and work efficiency are improved.

Description

technical field [0001] The invention belongs to the strength test technology, and relates to the improvement of a test rod marking device used for tensile tests. Background technique [0002] The existing marking machine in the physical and chemical room is mainly composed of a scratcher, a crank, a screw, and a clip. The two chucks of the test rod are respectively placed on the chucks with clips, and then the clips are pressed with screws, and the screws are tightened. The test rod is thus fixed. Its working principle is: by shaking the handle to drive the shaft to rotate, the sample will also move accordingly, and the sample will move 5mm every time it is shaken, and then press the knife to draw a scribe line on the cylindrical surface of the test rod. Its disadvantages are: [0003] First, the depth of scratches is not easy to control. The existing marking machine is marked by scratches, and the existing marking machine cannot guarantee the depth of the marking knife. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25H7/04
Inventor 陈亚萍
Owner 中国航空工业集团有限公司
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