Dynamic pressure spindle stiffness test system
A test system and spindle technology, applied in the direction of mechanical bearing test, elastic test, machine/structural component test, etc., can solve the problem of inability to measure safely and accurately, and achieve the effect of improving safety and measurement accuracy
Active Publication Date: 2019-09-17
TSINGHUA UNIV
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Problems solved by technology
For the dynamic pressure spindle system, the actual system stiffness can only be reflected during the normal rotation of the spindle. Considering the rotation characteristics in the dynamic pressure spindle stiffness test, the general test system cannot safely and accurately measure its true stiffness
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[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0023] Refer below Figure 1-Figure 2 A dynamic pressure spindle stiffness testing system 100 according to an embodiment of the present invention is described, the dynamic pressure spindle stiffness testing system 100 can measure the stiffness of the dynamic pressure spindle 11 in a static state and a rotating state.
[0024] Such as figure 1 with figure 2 As shown, the dynamic pressure spindle stiffness testing system 100 generally includes: a force receiving module 10 , a fixing module 20 , a loading module 30 , a force meas...
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The invention discloses a dynamic pressure spindle stiffness test system. The system includes a force receiving module, a fixing bearing sleeve, a fixing module, a load applying module, a force measurement module, a displacement measurement module and a control module; the force receiving module is provided with a dynamic pressure spindle, and the periphery of the dynamic pressure spindle is sleeved with a bearing, an outer ring of the bearing is sleeved with the fixing bearing sleeve, and the fixing bearing sleeve is provided with a hook used for disposing the weight for the force receiving module; fixing module is arranged below the force receiving module; the load applying module is arranged on the fixing module and used for applying a load to the bearing; the force measurement module is arranged on the load applying module and used for measuring the load F applied by the load applying module to the bearing; the displacement measurement module is opposite to the dynamic pressure spindle and used for measuring the radial displacement S of the dynamic pressure spindle; the control module is connected with the load applying module, the force measurement module and the displacement measurement module respectively and receives output signals of the force measurement module and the displacement measurement module so as to calculate the stiffness K=F / S of the dynamic pressure spindle. According to the dynamic pressure spindle stiffness test system, the safety is high and the measurement accuracy is high.
Description
technical field [0001] The invention relates to the technical field of spindle stiffness testing, in particular to a dynamic pressure spindle stiffness testing system. Background technique [0002] The traditional method of measuring the stiffness of the spindle is to directly apply a load to the stationary spindle, and at the same time measure the deformation of the spindle in the direction of the applied force to calculate the stiffness. For the dynamic pressure spindle system, the actual system stiffness can only be reflected during the normal rotation of the spindle. Considering the rotation characteristics in the dynamic pressure spindle stiffness test, the general test system cannot safely and accurately measure its true stiffness. Contents of the invention [0003] The present invention aims to solve one of the above-mentioned technical problems at least to a certain extent. [0004] Therefore, the present invention proposes a dynamic pressure spindle stiffness tes...
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IPC IPC(8): G01M5/00G01M13/04
Inventor 冯平法张建富邱文瀛郁鼎文吴志军
Owner TSINGHUA UNIV