Double-lever force standard machine and calibration and demarcation method thereof
A double-lever, standard machine technology, applied in the direction of force/torque/work measuring instrument calibration/testing, instruments, measuring devices, etc., can solve the problems of low degree of automation, complex structure, inconvenient use, etc., and achieve simple calibration methods, The effect of reducing equipment volume and simple calibration method
Inactive Publication Date: 2013-01-02
JILIN UNIV
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Problems solved by technology
[0003] The existing lever type force standard machine (or loading device) for the above purpose has the following disadvantages: complex structure, limited series of applied force values, low efficiency, high cost, low degree of automation, inconvenient use, etc.
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[0141] A 50kN double-lever floating code force standard machine, the length of the main lever beam 9 loaded is 2000mm, the maximum amplification ratio is 18, and the loading range is 500N-50kN, S 1 =285mm,L 0 =240mm, S=95mm, H=1000mm, load weight 10 gravity W=2800N, counterweight weight 19 gravity W of zero point balance lever beam 6 1 =1600N, the power of the servo motor 2 is 750W, the rated speed is 2000rpm, and the displacement resolution of the weight 10 moving on the main lever beam 9 is 0.5 μm.
[0142] figure 1 The middle represents the structural composition of the 50kN double-lever floating code force standard machine, which includes:
[0143] Power point knife bearing 1, servo motor 2, fulcrum knife bearing 3, moving beam 5, zero balance lever beam 6, electric control cabinet 7, ball screw 8, main lever beam 9 and weight 10. Figure 5 The middle shows the structural diagram of zero calibration and force value calibration of the 50kN double-lever floating-type forc...
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The invention discloses a double-lever force standard machine and a calibration and demarcation method thereof, aiming to solve the problems of complex structure, limited applied force value level, low efficiency and the like in the prior art. The force standard machine comprises a loading lever system and a balancing lever system, wherein the loading lever system comprises a synchronous belt andan eccentric wheel tensioning mechanism; the balancing lever system comprises a balance weight; the eccentric wheel tensioning mechanism comprises an eccentric shaft, a spring check ring, a bearing, a spacer bush and bolts; and the balance weight is in an upper-lower or left-right double-body dismounting structure and comprises an additional balance weight, an original balance weight, a stop pin and fastening bolts. The calibration and demarcation method comprises the following steps of: calibrating zero balance; placing a gravity weight on the upper end surface of a lower beam of a reverse frame; calibrating zero balance again; recording the weight displacement; and representing the displacement directly by the pulse number of a coder and the like. The invention also provides a calibration and demarcation method for the double-lever force standard machine by the balance weight.
Description
technical field [0001] The invention relates to a lever-type precision force value loading device and its calibration and calibration method. More specifically, the invention relates to a double-lever force standard machine and its calibration and calibration method. Background technique [0002] Force value measurement is a basic measurement technology that plays an important role in national economic construction. One of the most basic equipment and instruments in the field of force measurement is the force standard machine, among which the lever force standard machine is widely used in various occasions in the development, production and use of force measuring instruments. In the production of artillery and other weapons, the use of plastic deformation pressure measurement to measure the pressure in the chamber is widely used, and it requires precise force application devices. [0003] The existing lever-type force standard machine (or loading device) used for the above ...
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IPC IPC(8): G01L25/00
Inventor 张学成张晟郑烨炜赵恒喜
Owner JILIN UNIV