Multi-field coupling roll finishing device for conical surface

Abstract

The invention provides a multi-field coupling roll finishing device for a conical surface. Multi-field coupling particularly means coupling of a high-temperature thermal field, a variable frequency pulsed magnet field and an ultrasonic field. The multi-field coupling roll finishing device comprises a rolling knife, an amplitude-change pole, a transducer, an ultrasonic generator, a thermocouple coil, a temperature controller, a pulsed magnet field intensifying system, a dynamometer and a mounting rack. A novel rolling knife structure is designed, so that different rolling wheels can be replacedaccording to different rolling workpieces, meanwhile, different rolling angles can be replaced according to different conical surface angles of workpieces, and accordingly, the use is convenient andreliable. According to the multi-field coupling roll finishing device, the heating temperatures of the workpieces can be controlled by a temperature controller, the rolling temperature of the workpieces is increased, and the atomic vitality of the workpieces is enhanced, dislocation movement is overcome, the resistance is reduced, and accordingly, a favorable rolling surface quality is acquired. The conical workpieces are placed in a pulsed magnet field acting region, so that the hardness and the wear resistance of the workpieces are improved. The value of a rolling force in a rolling processcan be monitored in real time by the dynamometer, and the rolling force in the rolling process is kept constant by feedback of a digital control system. An ultrasonic rolling system which can be mounted on a common lathe is designed to roll a conical-surface shaft part, the surface roughness of the part can be reduced, the surface hardness is improved, and favorable surface quality and mechanicalperformance are acquired.

Description

technical field [0001] The invention relates to a rolling device, in particular to a device for multi-field coupling conical surface rolling processing. The multi-field coupling specifically refers to the coupling of a high-temperature thermal field, a variable frequency pulse magnetic field and an ultrasonic field. Background technique [0002] Parts with tapered shafts are widely used in mechanical structures, and most of these parts are obtained by turning. After turning, the surface of the parts will leave turning textures and form microscopic defects. Shaft parts are subject to large torque, bending moment and axial alternating tensile pressure in actual work, and fatigue fractures are prone to occur from defects on the outer surface of the outer circle, thus affecting the service life of shaft parts. Therefore, it is necessary to carry out rolling processing on the surface to improve the surface quality and fatigue life. [0003] The rolling process makes the peaks on...

AI Technical Summary

Problems solved by technology

However, the smoothing effect of ordinary rolling is not ideal. The introduction of high-temperature thermal field, frequency conversion pulse magnetic field and ultrasonic machining technology into rolling processing is of great significance to the improvement of the surface quality of shaft parts with tapered surfaces.

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