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High-precision hardness tester force value loading adjusting device

A technology of adjusting device and hardness tester, which is applied in the direction of measuring device, testing material hardness and strength characteristics, etc., can solve problems such as difficulty in achieving maximum loading force value, inability to meet accuracy requirements, and large mechanical structure.

Inactive Publication Date: 2009-11-25
BEIJING CHANGCHENG METERING TEST TECH INST NO 1 GRP CO CHINA AVIATION IND
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the high-precision standard hardness tester force loading systems at home and abroad are realized by weight static weight. The standard hardness tester force loading device produced by this method has a large mechanical structure, inconvenient maintenance and operation, regular calibration, and low work efficiency.
In other existing hardness testers, the electromagnetic force loading device can realize micro force value adjustment, but it is difficult to achieve the maximum loading force value required by the Brinell hardness test
The electric and hydraulic force loading structure can realize fast loading of large force, but the force value adjustment accuracy can only reach ±1%, which cannot meet the accuracy requirement of ±0.1% as a standard machine

Method used

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  • High-precision hardness tester force value loading adjusting device
  • High-precision hardness tester force value loading adjusting device
  • High-precision hardness tester force value loading adjusting device

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Embodiment Construction

[0015] specific implementation plan

[0016] The device of the present invention will be further described in detail according to the accompanying drawings and embodiments:

[0017] See attached Figure 1~3 As shown, this kind of high-precision hardness tester force value loading adjustment device includes a body 6, an indenter lifting device 4, a working platform 8, a working platform lifting device 1 and a motor 7, and the upper part of the indenter lifting device 4 is connected to a force sensor 5 A piezoelectric ceramic force loading block 2 formed by stacking multiple piezoelectric ceramics 2 is installed on the central axis of the force loading of the device. The piezoelectric ceramic force loading block 2 can be installed under the working platform 3, or It can be installed above the pressure head lifting device 4. The piezoelectric ceramic force value loading block 2 fixes the upper cover plate 12, the lower cover plate 13 and the multi-layer piezoelectric ceramic she...

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Abstract

The invention provides a high-precision hardness tester force value loading adjusting device, comprising a high-rigidity body, a pressure head lifting device and a working platform coarse lifting device; the axle wire of force value loading of the device is mounted with a piezoelectric ceramic force value loading block composed by overlapping multiple piece of piezoelectric ceramics; the circuit connecting structure of the multiple piece of piezoelectric ceramics is in parallel connection, the excitation voltage thereof is supplied by driver through positive and negative electrode wires; the driver is controlled by computer; compared the technical proposal of the invention with the prior technical device, the device can cause the precision of the force loading to exceed more than + / - 0.1% and has the advantages of fast response, compact structure.

Description

technical field [0001] The invention is a high-precision hardness tester force value loading adjustment device, which belongs to the technical field of product structure. Background technique [0002] At present, most of the high-precision standard hardness tester force loading systems at home and abroad are realized by weight static weight. The standard hardness tester force loading device produced by this method has a large mechanical structure, inconvenient maintenance and operation, regular calibration, and low work efficiency. . In other existing hardness testers, the electromagnetic force loading device can realize micro force value adjustment, but it is difficult to realize the maximum loading force value required by the Brinell hardness test. Electric and hydraulic force loading structures can realize rapid loading of large force, but the force adjustment accuracy can only reach ±1%, which cannot meet the accuracy requirement of ±0.1% as a standard machine. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02G01N3/40
Inventor 石伟陶继增曾吾于娅楠王显伟李金颖徐明
Owner BEIJING CHANGCHENG METERING TEST TECH INST NO 1 GRP CO CHINA AVIATION IND
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