Portable digital display hardness measuring device
A measuring device and portable technology, applied in the field of portable digital hardness measuring devices, to achieve the effects of simple test operation, high resolution and simple structure
Active Publication Date: 2015-06-17
SHENJAN TJANSIN TESTING INSTR KO LTD
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- Abstract
- Description
- Claims
- Application Information
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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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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
A portable digital display hardness measuring device comprises a supporting seat (8), a force measuring device, a pressure head (1), an electronic circuit board (26), a digital display (19), and a stress application and indentation depth measuring device. The stress application and indentation depth measuring device comprises a hand wheel (11), a rotary encoder (9), a sleeve (14), and a micrometer screw thread pair formed by a micrometer nut (18) and a micrometer screw rod (17); the rotary encoder (9) is disposed on the supporting seat (8), the micrometer nut (18) is disposed in a hole, the digital displayer (19) is disposed on a front side, and the electronic circuit board (26) is disposed on a side face; the micrometer screw rod (17) is disposed in the micrometer nut (18), a rotating shaft (10) of the rotary encoder (9) is connected to the micrometer screw rod (17) and rotates with the micrometer screw rod (17), an upper end of the micrometer screw rod (17) is connected to the hand wheel (11), a lower end is connected to the force measuring device; and a lower end of the force measuring device is connected to the pressure head (1); and the hand wheel (11), the micrometer screw rod (17), the force measuring device, and the press head (1) 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 has a simple structure, convenient reading, easy operation and high precision, and can be fixed on metal parts through a fixing device to quickly detect 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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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