Device and method for measuring friction coefficient between inner and outer rings of bearing
A friction coefficient and measuring device technology, applied in measuring devices, mechanical devices, instruments, etc., can solve the problem of inability to measure the secondary sliding friction coefficient of the inner and outer rings of the bearing.
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 between 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 inner and outer rings of the bearing.
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[0040]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.
[0041] 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.
[0042] figure 1 A schematic structural diagram of a friction coefficient measuring device between the inner and outer rings of a bearing provided by an 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 structure in the friction coefficient measurin...
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The embodiment of the invention discloses a device and method for measuring a friction coefficient between inner and outer rings of a bearing. A to-be-measured bearing assembly comprises two accompanying bearings, an accompanying bush, a rotary loading bush, a rotary pin shaft, an inner ring of the measured bearing and an outer ring of the measured bearing; a force loading module is used for loading a radial load to the outer ring of the bearing and the inner ring of the bearing through the outer ring fixing piece, so that the inner ring of the bearing and the outer ring of the bearing are incontact, and a loaded radial load value is recorded; a torque measurement module is used for measuring a load torque value borne by the to-be-measured bearing assembly t during rotation; the difference between the load torque value and the additional torque values of the two accompanying bearings is a correction torque value between the inner ring of the bearing and the outer ring of the bearing;and the friction coefficient between the inner ring of the bearing and the outer ring of the bearing is the slope of the relation curve of the correction torque value changing along with the radial load value. According to the embodiment of the invention, the situations of uneven stress, sliding friction interference of other assemblies and the like can be effectively eliminated, so that the static friction coefficient and the dynamic friction coefficient between the inner and outer rings of the bearing 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 inner and outer rings of a bearing. 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 inner and outer rings of the bearing 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 coefficient of friction between the inner and outer rings of a bearing is crucial for the calculation of the secondary slip of a hinge mechanism with bearings. However, the friction coefficient is affected by many factors such as...
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Login to View More IPC IPC(8): G01N19/02
CPCG01N19/02
Inventor 朱江冯成慧韩易东
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA