Integral stiffness measuring method of screw press
A technology of screw press and measurement method, which is applied in the testing of machines/structural components, measuring devices, elastic testing, etc., can solve problems such as inaccurate measurement of comprehensive elastic deformation stiffness, and achieve the effect of simplifying the testing process and being convenient to use
Inactive Publication Date: 2010-12-08
SHANDONG UNIV OF TECH
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Problems solved by technology
The existing technology cannot accurately measure the stiffness of comprehensive elastic deformation, which has become a difficult technical problem in this field
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The invention provides a comprehensive rigidity measurement method for a spiral pressure machine. The method is characterized by adopting the following steps: (1) operating data comprising energy coefficient k, motion part energy E and total rotary inertia Je of the side of a motor shaft is input; (2) according to a formula (1), a control part calculates the needed rotational speed omega of a switched reluctance motor and further controls the action of the switched reluctance motor; and when a motor controller detects that the rotational speed value of the switched reluctance motor is equal to omega, the motor controller controls the switched reluctance motor to cut off power; and (3) according to pressure value Fk displayed by a tonnage instrument, the comprehensive rigidity Ck value is calculated by a formula (2). As the comprehensive elastic deformation rigidity of the tested spiral pressure machine comprises vertical elastic deformation, torsional elastic deformation and rebound deformation of a stress piece and torsional elastic deformation and mass variables of groundwork, the method does not need to test each variable respectively, simplifies an equipment testing process and is convenient for a user to use.
Description
technical field The invention provides a method for measuring the comprehensive stiffness of a screw press, which belongs to the field of mechanical industrial equipment. Background technique When the screw press is working, its effective strike energy is transformed into workpiece deformation work and comprehensive elastic deformation work. The comprehensive elastic deformation work includes longitudinal elastic deformation, torsional elastic deformation, rebound deformation and torsional elastic deformation of the foundation of the equipment. The prior art cannot accurately measure the stiffness of comprehensive elastic deformation, which has become a difficult technical problem in this field. Contents of the invention The object of the present invention is to provide a method for the comprehensive stiffness of the screw press which can overcome the above defects and can accurately measure the comprehensive elastic deformation stiffness of the screw press. Its technica...
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IPC IPC(8): G01M5/00
Inventor 赵婷婷杨思一
Owner SHANDONG UNIV OF TECH