Test system and test method of axial riveting force in wheel hub bearing riveting assembly
A technology of wheel hub bearing and testing system, applied in the field of force testing system, can solve the problems such as the failure of bearing life concentration, the difficulty of assembly accuracy to meet the requirements, and the inability to accurately know the axial force of riveting, so as to improve the service life and improve the The effect of intrinsic quality and product performance
Inactive Publication Date: 2011-04-27
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 hub unit have good performance, especially to meet the service life requirements, 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 the hub bearing riveting assembly, the 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 To the transmitter for calibration, the transmitter transmits the calibrated analog value to the AD conversion module, and then transmits it to the single-chip microcomputer for comparison with the set value. According to the comparison result, the oil circuit is controlled through the relay, and can be changed through the keyboard during the process. Target value; In add...
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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 analogquantity 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 theproduct performance of the riveting hub bearing unit.
Description
【Technical field】 [0001] The invention belongs to the technical field of a force testing system and method, and relates to a test system and a testing method for axial riveting force of a wheel hub bearing riveted assembly during axial riveting assembly of a wheel hub bearing unit of a car. 【Background technique】 [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. D...
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IPC IPC(8): G01M13/04G01L1/00
Inventor 肖耘亚神翠楠周志雄龙迎春
Owner SHAOGUAN COLLEGE