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Sample gauge length and after-fracture length measuring device

A technology of length measurement and gauge length, which is applied in the field of specimen gauge length and length measurement device after fracture, can solve the problems of not being able to complete the marking of the gauge length and the length measurement after fracture at the same time, and the non-detachable movement of the extensometer, so as to achieve accurate and reliable indication values. , the effect of reducing random errors

Inactive Publication Date: 2018-09-28
CITIC DICASTAL
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

When the special extensometer is used, there are the following problems: on the one hand, the extensometer cannot be disassembled and moved; When comparing material tests, it is still necessary to manually detect the length of the broken sample
Most of the above-mentioned patent documents only provide gauge marking devices and methods, and cannot complete gauge marking and post-break length measurement at the same time

Method used

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  • Sample gauge length and after-fracture length measuring device
  • Sample gauge length and after-fracture length measuring device
  • Sample gauge length and after-fracture length measuring device

Examples

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Embodiment Construction

[0025] A device for measuring the gauge length of a sample and its length after breaking, the device includes a workbench, a sliding table support A, a control and length display, a spiral micrometer head, a scoring knife, and a sample. The sample is installed between the slide bracket A and the slide bracket B; the screw micrometer is installed on the slide bracket A and is located directly above the sample, and the axis of the sample is parallel to the axis of the screw micrometer in the vertical plane , parallel to the table surface.

[0026] Using the reading device with spiral micrometer head to measure the gauge length and the length after breaking, the detection accuracy is ±0.01mm, which is better than the requirement of ±0.05mm in GB / T228 "Metallic Materials Tensile Test Method at Room Temperature".

[0027] The spiral micrometer head is driven by a stepping motor, which does not require manual measurement and reduces random errors.

[0028] The control and length di...

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Abstract

The invention provides a sample gauge length and after-fracture length measuring device and a method using the device to measure the gauge length and after-fracture length of samples. The device comprises a workbench, a slide table support, a control and length display, a spiral micrometer head, a scriber, a sample and the like. The device has the advantages that the spiral micrometer head is usedas the reading device of the direct gauge length and after-fracture length measuring, and the detecting accuracy of the micrometer head is + / -0.01mm which is better than the + / -0.05mm requirement inMetallic Material Room Temperature Tensile Testing Method; the device is scientific in detecting principle, simple and reasonable in structure and the like.

Description

technical field [0001] The invention relates to a device for measuring the gauge length of a sample and the length after breaking, which is used for measuring the gauge length and the length after breaking of a material test sample, and belongs to the technical field of material testing and length measurement and detection. Background technique [0002] The device for measuring the gauge length and the length after breaking of a sample is a measuring device specially for measuring the gauge length and the length after breaking of a material test sample, and belongs to the technical field of material testing and length measurement and detection. Usually, the measurement of the gauge length and the length after fracture of the material test sample adopts a special extensometer or a vernier caliper. [0003] The scribing of the sample gauge requires manual measurement and scribing. The scribing of the test gauge is basically done manually. The manual scribing gauge is affected ...

Claims

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Application Information

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IPC IPC(8): G01B5/02
CPCG01B5/02G01N3/04G01N2203/0067G01N2203/0605G01N2203/0682G01B5/043G01N3/06
Inventor 孙汉宝吕金旗朱英伟刘敬英王英锋王柱兴朱志华
Owner CITIC DICASTAL
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