Device and method for measuring friction coefficient of end face of bearing inner ring and surface of bushing
A technology of bearing inner ring and friction coefficient, which is applied to measuring devices, mechanical devices, instruments, etc., can solve the problem of inability to measure the friction coefficient between the end face of the bearing inner ring and the surface of the bushing.
Active Publication Date: 2020-03-27
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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However, the above measurement method measures the friction coefficient of the primary sliding of the inner and outer rings of the bearing, that is, none of the existing measurement methods can measure the friction coefficient of the secondary sliding between the end face of the inner ring of the bearing and the surface of the bushing
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[0038] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0039]The following specific embodiments provided by the present invention can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
[0040] figure 1 It is a schematic structural diagram of a friction coefficient measuring device between the end surface of the bearing inner ring and the surface of the bushing provided by the embodiment of the present invention, figure 2 for figure 1 The illustrated embodiment provides a cross-sectional view of a bearing assembly to be tested and a corresponding supporting struc...
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The embodiment of the invention discloses a device and method for measuring a friction coefficient between an end face of a bearing inner ring and a surface of a bushing. A to-be-measured bearing assembly comprises two accompanying bearings, an accompanying bushing, a rotating bushing, a fixed pin shaft and a bearing inner ring. A force loading module is used for loading a force along the axial direction of a fixed pin shaft to the bearing inner ring through a supporting structure, the accompanying bearing and the accompanying bushing, and recording a loaded axial load value; a torque measuring module is used for measuring a load torque value borne by the to-be-measured bearing assembly when the rotating bushing rotates; the difference between the load torque value and the additional torque value of the single accompanying bearing is the correction torque value of the bearing inner ring end surface and the bushing surface; and the friction coefficient between the end face of the bearing inner ring and the surface of the bushing is the slope of a relation curve of the correction torque value changing along with the axial load value. According to the embodiment of the invention, thesituations of uneven stress, sliding friction interference of other components and the like can be effectively eliminated, so that the static friction coefficient and the dynamic friction coefficientof the bearing and the surface of the bushing are effectively measured.
Description
technical field [0001] The present application relates to but is not limited to the technical field of friction coefficient measurement of aeronautical structures, especially a device and method for measuring the friction coefficient between the end face of a bearing inner ring and the surface of a bushing. Background technique [0002] In the hinge structure with bearings, if the bearing has a locking failure, it must be ensured that the hinge can overcome the static friction between the bearing end face and the bushing to slide effectively. This kind of sliding is different from the sliding of the inner and outer rings of the bearing, and is called secondary sliding. . The secondary sliding pair can effectively guarantee the safety and reliability of the hinge structure. The friction coefficient between the end face of the inner ring of the bearing and the surface of the bushing is very important for the calculation of the secondary sliding of the hinge mechanism with bea...
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IPC IPC(8): G01N19/02
CPCG01N19/02
Inventor 朱江李云鹏冯成慧
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA