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Spring plate rigidity precision testing instrument

A spring plate and tester technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of accurate measurement of electronic balance spring plates, etc., to improve accuracy and stability, test accuracy, simple structure

Inactive Publication Date: 2009-10-14
SHANGHAI SUNNY HENGPING SCI INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After extensive review and retrieval of public publications and patent documents at home and abroad, there is no report on a spring leaf stiffness precision tester for accurately measuring the spring leaf stiffness of an electronic balance.

Method used

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  • Spring plate rigidity precision testing instrument

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] In the precision spring leaf stiffness tester, the spring leaf (2) to be tested is clamped by the clamping device (1). A non-contact displacement sensor (7) and a digital display (8) are arranged on the upper part of the spring piece to be tested (2). There is a booster rod (3) at the bottom of the spring piece (2) to be tested; the booster rod (3) is connected with one end of the lever (4). The other end of lever (4) is provided with weight frame (9), and weight frame (9) is used for device weight (6). An eccentric wheel (5) is arranged near the weight (6) at the lever (4), and a lever support (10) is arranged at the middle part of the lever (4). The invention is easy to use: press the tested spring piece (2) in the clamping device (1), and read its original position value from the digital display (8) under the condition of no test force, and record . Turn ...

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Abstract

The invention discloses a spring plate rigidity precision testing instrument which measures the rigidity of a spring plate on an electronic balance. The same kinds of spring plates on the same electronic balance have to possess the same rigidity. The rigidity of the prior spring plate is difficult to precisely measure due to the lack of a precision testing instrument, therefore, the accuracy and the stability of the electronic balance are affected. The lower part of the spring plate (2) to be measured is provided with a stress application rod (3); one end of a lever (4) acts on the stress application rod (3), and the other end is connected with a weight (6); an eccenter (5) is arranged close to the weight (6); and the upper part of the spring plate (2) to be measured is connected with a non-contact type displacement sensor (7) and a digital displayer (8). A weight rack (9) is arranged on the lever (4), and the middle part of the lever (4) is provided with a lever support (10). The invention has the advantages that the rigidity of the spring plate is accurately measured, the accuracy and the stability of the electronic balance can be ensured, and the spring plate rigidity precision testing instrument has convenient operation, simple structure, small volume and low cost.

Description

technical field [0001] The invention relates to a measuring instrument, in particular to a spring leaf stiffness precision tester for measuring the spring leaf stiffness of an electronic balance. Background technique [0002] In the electronic balance, each has more than 10 pieces of different spring leaves. In order to ensure the accuracy and stability of the balance, the same type of spring leaf installed on the same balance must have the same stiffness, that is, the "force-deformation" performance must be the same. Since there is no spring stiffness precision tester for measuring the spring stiffness of the electronic balance in the prior art, the stiffness of the spring cannot be accurately measured, thereby affecting the accuracy and stability of the electronic balance. Electronic balances are widely used in various technical fields, especially for scientific research. The accuracy and stability of electronic balances directly affect the accuracy of scientific research...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/14
Inventor 黄飞
Owner SHANGHAI SUNNY HENGPING SCI INSTR
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