Device and method for measuring friction coefficient between inner and outer rings of a bearing
A technology of friction coefficient and bearing outer ring, which is applied in the field of friction coefficient measurement of aeronautical structures, which can solve the problem that the secondary sliding friction coefficient of the inner and outer rings of the bearing cannot be measured.
Active Publication Date: 2022-04-19
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 friction coefficient measuring device and a measuring method between the inner and outer rings of a bearing. Bearing inner ring and bearing outer ring; the force loading module is used to load radial load to the bearing outer ring and inner ring through the bearing outer ring fixing parts, so that the bearing inner and outer rings are in contact, and record the loaded radial load value; torque measurement The module is used to measure the load torque value received when the bearing assembly to be tested rotates; the difference between the load torque value and the additional torque value of the two test bearings is the corrected torque value between the inner and outer rings of the bearing; the friction between the inner and outer rings of the bearing The coefficient is the slope of the relationship curve of the modified torque value versus the radial load value. The embodiment of the present invention can effectively eliminate the situation of uneven force and sliding friction interference of other components, so as to effectively measure the coefficient of static friction and coefficient of dynamic friction between the inner and outer rings of the bearing.
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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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