Electromagnetic type small force value standard apparatus
A technology of electromagnetic balance and standard device, which is applied in the direction of measuring device, force/torque/power measuring instrument calibration/test, instrument, etc., can solve the problems that the structure is no longer feasible, and the force value calibration cannot be realized, so as to achieve improvement The effect of trimming efficiency, accurate and fast reading, and guaranteed accuracy
Active Publication Date: 2012-10-10
深圳中航技术检测所有限公司厦门分公司
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Problems solved by technology
Due to structural and functional limitations, the force value range of these calibration devices cannot achieve force value calibration in the range below 1N
At present, the equipment commonly used for force value calibration in a small range is the force standard machine of the static weight mechanism, and this type of equipment requires a reverser mechanism, and this mechanism needs to be used as the first-level force value of the device. However, due to the limitation of structure and materials, the force value of this level cannot be made very small, so when the force value is small enough, this structure is no longer feasible.
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[0012] Electromagnetic balance small force value standard device is mainly composed of loading device, control system, connectors and indicating instruments. The loading device mainly adopts the principle of equal-arm lever, which is equivalent to a lever-type force standard machine with a leverage ratio of 1:1. Its working principle is: transform the high-precision electromagnetic balance, add weights and weight loading mechanism, precision adjustment mechanism, reverser and balance device, etc. A standard force value weight is applied to one end of the lever, and the level of the lever is adjusted through a precision adjustment mechanism to generate the same force value at the other end of the lever. This force value is applied to the force sensor or dynamometer to be calibrated through the reverser.
[0013] The present invention uses the gravity generated by the weight to generate the force value through the lever mechanism, which has one more lever mechanism with a lever...
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The invention belongs to a measuring testing technology, relating to an electromagnetic scale small power standard device. The device is mainly composed of a force arm lever, small weights and small weight loading mechanism, large weights and large weight loading mechanism; stepping electric motor, decelerating boxes, a servo platform, a reverser, a balancing mechanism, an electronic balancer, anelectronic balance indicator, a weight hanging and a reverser hanging. The invention leveraged takes the general structure of power from the standard machine, the electromagnetic balance of high precision have been modified in order to achieve a small force measurement and calibration. The electromagnetic balance of the weight-side takes the stepper motor to achieve an accurate load weight. When weight is loaded after the adoption of servo control system to drive precision as precision ball screw to adjust the body to make the scales balance in order to achieve the balance of power at both ends of the same value.
Description
technical field [0001] The invention belongs to the measuring and testing technology, and relates to an electromagnetic balance type small force value standard device. Background technique [0002] Force value is one of the basic quantities in the field of mechanical metrology. Force measurement is widely used in aviation, aerospace, ships, weapons and other national defense technology fields, and also plays an important role in civil industries such as automobile industry and other manufacturing industries. In recent years, with the rapid development of related disciplines such as nanometering and micro-nano electromechanical systems, a large number of small-force measurements have been carried out in its scientific research and production, such as nano-hardness, film mechanical performance testing, and nano-material elastic modulus. In the process of testing and other tests, it is necessary to accurately test the small force value to ensure the accuracy of the test result...
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IPC IPC(8): G01L25/00
Inventor 秦海峰刘永录
Owner 深圳中航技术检测所有限公司厦门分公司