Measuring machine for automatic tightening, hole alignment and pretightening force of hub adjusting nut with hole and method of use thereof

Abstract

The invention discloses a machine for automatically tightening a wheel hub adjustment nut with holes, realizing hole alignment and measuring a pre-tightening force and a use method of the machine andbelongs to the engineering machinery assembly field. The machine comprises a counter-force measuring device, a nut tightening machine, a nut tightening disc, a sensor mounting disc, a laser sensor, ameasuring shaft and a PLC; the counter-force measuring device is connected with the output shaft of the nut tightening machine; the output end of the nut tightening machine is connected with the sensor mounting disc; the sensor mounting disc is connected with the nut tightening disc; the laser sensor is fixed on the sensor mounting disc; the measuring shaft is meshed with the counter-force measuring device through a gear; the PLC is connected with and controls a tightening shaft controller, a measuring shaft controller and the laser sensor. The invention also discloses a use method of the above machine. With the machine and the use method thereof of the invention adopted, the tightening of the wheel hub adjustment nut, the synchronous measurement of the pre-tightening force and the automatic alignment of the holes of the adjustment nut can be realized simultaneously; operation is automated; tightening is safe and reliable; and measurement is accurate.

Description

technical field [0001] The invention belongs to an assembly tool and its use method, in particular to an automatic tightening, hole alignment and pretightening force measuring machine for wheel hub adjustment nuts with holes and its use method. Background technique [0002] With the rapid development of the construction machinery industry, people's requirements for the quality of loaders are constantly improving, especially for the assembly and pre-tightening force requirements of the wheel hub bearing adjustment nuts are more stringent. At present, most OEMs generally use manual assembly when assembling wheel hub adjustment nuts, and manually detect the bearing pretightening force. The work is intensive and cannot be automated. [0003] In recent years, a new tightening adjustment method has emerged during the tightening process of wheel hub adjustment nuts. For example, Chinese patent: 201010536076.8 discloses a wheel hub main nut tightening and bearing pretightening force...

AI Technical Summary

Problems solved by technology

At present, most OEMs generally use manual assembly when assembling the wheel hub adjustment nuts, and manually detect the bearing pretightening force. The work is intensive and cannot be automated.

[0003] In recent years, a new tightening adjustment method has emerged during the tightening process of wheel hub adjustment nuts. For example, Chinese patent: 201010536076.8 discloses a wheel hub main nut tightening and bearing pretightening force measuring machine and its use method in the automotive industry. The main nut is tightened mechanically and automatically. However, for the hub adjusting nut with threaded holes, especially the hub adjusting nut in the field of engineering machinery, this patent does not involve

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