Sample gauge length and length after fracture measuring device

Patent metadata

Field	Value
Publication number	US-10823543-B2
Application number	US-201916258798-A
Country	US
Kind code	B2
Filing date	Jan 28, 2019
Priority date	Jun 26, 2018
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

A sample gauge length and length after fracture measuring device includes a worktable, a first sliding table support and a second sliding table support, a control and length display, a spiral micrometer head, a scriber, a sample, etc. The reading device using the spiral micrometer head to directly measure the gauge length and the length after fracture has a detection accuracy of ±0.01 mm, which is superior to the requirement of ±0.05 mm in GB/T228 Metallic Materials Tensile Testing at Ambient Temperature.

First claim

The invention claimed is:

1. A sample gauge length and length after fracture measuring device, comprising a worktable, a first sliding table support, a control and length display, a spiral micrometer head, a second sliding table support, a sample and a scriber, wherein the sample is installed between the first sliding table support and the second sliding table support; the spiral micrometer head is installed on the first sliding table support and located directly above the sample, and an axis of the sample is parallel to an axis of the spiral micrometer head in a vertical plane and parallel to a surface of the worktable.

2. The sample gauge length and length after fracture measuring device according to claim 1 , wherein the worktable is provided with a trapezoidal groove, and the first sliding table support and the second sliding table support are installed on the worktable;
a portion of the first sliding table support in contact with the worktable is a trapezoidal boss; a top of the first sliding table support is provided with a rectangular groove and a through hole, and a threaded hole is formed at the rectangular groove to fasten the spiral micrometer head; a rectangular groove, a rectangular notch and a through hole are formed in a middle of the first sliding table support, a threaded hole is formed at the rectangular groove, and a fastening bolt can be installed through the notch to fasten one end of the sample;
a portion of the second sliding table support in contact with the worktable is a trapezoidal boss to facilitate movement and fixing on the worktable; a top of the second sliding table support is provided with a rectangular groove and a through hole, and a threaded hole is formed at the rectangular groove to facilitate the installation of a fastening bolt for fastening other end of the sample;
the scriber is installed at one end of the spiral micrometer head, and the end of the spiral micrometer head provided with the scriber is provided with a trapezoidal groove to facilitate movement and positioning of the scriber;
the scriber is made of tool steel; a portion where the scriber is installed to the spiral micrometer head is provided with a trapezoidal boss and a threaded through hole to facilitate fixing between the scriber and the spiral micrometer head; meanwhile, an end of the scriber in contact with the sample is machined into a line contact shape for reducing the scribing width of the sample.

Assignees

• Citic Dicastal Co Ltd

Inventors

• Sun Hanbao
• Lv Jinqi
• Zhu Yingwei
• Liu Jingying
• Wang Yingfeng
• Wang Zhuxing
• Zhu Zhihua

Classifications

• G01B5/02 Primary

  for measuring length, width or thickness (G01B5/004, G01B5/08 take precedence) · CPC title

• G01N3/04

  Chucks · CPC title

• G01N3/06

  Special adaptations of indicating or recording means · CPC title

• G01B5/043 Primary

  for measuring length · CPC title

• G01N2203/0682

  Spatial dimension, e.g. length, area, angle · CPC title