Portable digital display hardness measuring device

A measuring device, portable technology, applied in the field of portable digital display hardness measuring device, achieves high resolution, simple test operation, and maintains the effect of accuracy

Active Publication Date: 2013-09-18
SHENJAN TJANSIN TESTING INSTR KO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, Brinell hardness and Vickers hardness detection by the sounding method has not been used in portable hardness testers.

Method used

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  • Portable digital display hardness measuring device

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Embodiment Construction

[0043] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0044] Such as figure 1 As shown, the present invention comprises support seat 8, force measuring device, indenter 1, electronic circuit board 26, digital display 19 and adding force and indentation depth measuring device, wherein adding force and indentation depth measuring device comprise hand wheel 11, The rotary encoder 9, the sleeve 14 and the micrometric screw pair composed of the micrometric nut 18 and the micrometric screw rod 17, the force measuring device includes a sliding sleeve 6, a force sensor 5 and a force sensor seat 4.

[0045] The supporting seat 8 is the main support, and its inside has a round hole along the axial direction. The micrometric nut 18 is installed in the round hole of the supporting seat 8. The micrometric screw rod 17 is located in the micrometric nut 18 and is threadedly connected with the micrometric nut 18; One end (upp...

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Abstract

The invention relates to a material hardness detection instrument, and in particular relates to a portable digital display hardness measuring device. The portable digital display hardness measuring device mainly comprises a pressure application and indentation depth measurement device consisting of a hand wheel, a rotary encoder and a micrometer screw thread pair, and further comprises a supporting seat, a force-measuring device, a pressure head, an electronic circuit board and a display, wherein the supporting seat is provided with the rotary encoder, a micrometer nut is arranged in a hole of the supporting seat, the front surface of the supporting seat is provided with a digital display, and the side surface of the supporting seat is provided with the electronic circuit board; a micrometric screw rod is arranged in the micrometer nut; a rotating shaft of the rotary encoder is connected with the micrometric screw rod and rotates along with the micrometric screw rod; the upper end of the micrometric screw rod is connected with the hand wheel, the lower end of the micrometric screw rod is connected with the force-measuring device; the lower end of the force-measuring device is connected with the pressure head; and the hand wheel, the micrometric screw rod, the force-measuring device and the pressure head are connected to each other and are concentric, and move with rotation of the hand wheel (11) in the axial direction. The portable digital display hardness measuring device is simple in structure, convenient to read, easy to operate and high in precision, and can be fixed on metal parts through a fixing device and is used for quickly detecting hardness of large parts on site.

Description

technical field [0001] The invention relates to a material hardness testing instrument, in particular to a portable digital display hardness measuring device. Background technique [0002] At present, most conventional hardness testers use the principle of static force and then measure indentation. Among them, the Rockwell hardness tester measures the indentation depth and directly displays the hardness value; the Brinell hardness tester measures the indentation diameter, looks up the table or calculates the hardness value; the Vickers hardness tester measures the diagonal length of the indentation, looks up the table or calculates the hardness value; Calculate the hardness value. These hardness testers are generally desktop machines, which can only be used in the laboratory, and can only test small and medium-sized parts. For large parts that exist in large quantities on the production site, it is necessary to make samples or take samples to the laboratory for testing hard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/42
CPCG01N3/42G01N2203/0082
Inventor 张凤林吴丹刘丽萍张路明
Owner SHENJAN TJANSIN TESTING INSTR KO LTD
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