Test system and test method of axial riveting force in wheel hub bearing riveting assembly
A technology of wheel hub bearing and test system, applied in the field of force test system, can solve the problems such as the difficulty of assembly accuracy, the failure to meet the bearing life concentration, and the inability to accurately know the axial force of riveting, so as to improve the internal quality and Product performance, the effect of improving life
Inactive Publication Date: 2009-12-09
SHAOGUAN COLLEGE
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Problems solved by technology
[0002] The existing axial riveting assembly of car hub bearing units usually sets the working cycle and beat by time, and relies on the round nut limit to control the end point of riveting, and the position of the nut is adjusted by the operator's experience , due to the lack of special testing instruments and equipment, it is impossible to accurately know the axial force during riveting, so that it is impossible to accurately control the axial preload of the assembled bearing unit, making it difficult to meet the requirements for assembly accuracy, and the life of the bearing is concentrated The degree is far below the requirements of similar foreign products
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[0027] Below in conjunction with accompanying drawing and embodiment, the present invention is further described:
[0028] In order to make the riveted assembled hub unit have good performance, especially to meet the requirements of service life, it is necessary to strictly control the axial preload during assembly.
[0029] see figure 1 and figure 2 , A test system and test method for the axial riveting force of wheel hub bearing riveting assembly, the wheel hub bearing unit 1 to be tested is placed in the transition sleeve 2 of the pressure sensor 3 for positioning, and the pressure sensor 3 sends the detected pressure to the When the transmitter is calibrated, the transmitter transmits the calibrated analog value to the AD conversion module, and then transmits it to the single-chip microcomputer and compares the set value. According to the comparison result, the oil circuit is controlled by the relay, which can be changed through the keyboard during the process. target v...
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Abstract
This invention relates to a test system and a test method of the axial riveting force in wheel hub bearing riveting assembly, comprising a pressure sensor, a transducer, a cassette collection instrument and a microcomputer system. The pressure sensor converts an axial riveting force signal to a voltage signal which is calibrated and amplified by the transducer; the calibrated and amplified analog quantity is sent to the cassette collection instrument for AD conversion and then is sent to the microcomputer system; finally, data are stored and processed by the microcomputer system. The test system can real-time measure the axial riveting force in the course of wheel hub bearing riveting assembly and has the ability of feedback control, so that an operator can accurately measure the axial riveting force in riveting; a target value of axial riveting force is preset; riveting is automatically stopped as the riveting force gets up to the target value in assembly, thereby accurately controlling the pretightening force of the assembled bearing unit, improving the assembly accuracy and the service life of the bearing, and being benefit for effectively improving the inherent quality and the product performance of the riveting hub bearing unit.
Description
【Technical field】 [0001] The invention belongs to the technical field of force testing systems and methods, and relates to a testing system and a testing method for the axial riveting force of wheel hub bearing riveting assembly during the axial riveting assembly of a car wheel hub bearing unit. 【Background technique】 [0002] The axial riveting assembly of the existing car wheel hub bearing unit usually sets the working cycle and rhythm by time, and relies on the limit of the round nut to control the end point of the riveting assembly, and the nut position is adjusted by the operator's experience. , Due to the lack of special testing instruments and equipment, the axial force during riveting cannot be accurately known, so it is impossible to accurately control the axial preload of the assembled bearing unit, making the assembly accuracy difficult to meet the requirements, and the life of the bearing is concentrated. The degree is also far from the requirements of similar fo...
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IPC IPC(8): G01L1/00G01M13/04
Inventor 肖耘亚神翠楠周志雄龙迎春
Owner SHAOGUAN COLLEGE