Hypoid gear rotary forging processing device and method for processing hypoid gear

Abstract

The invention relates to a hypoid gear rotary forging processing device and a method for processing a hypoid gear, comprising a rotary forging head which is arranged on a machine tool spindle and rotates around the machine tool spindle and at the same time around the self-axis of the rotary forging head, and the included angle between the axis of the machine tool spindle and the rotation axis of the rotary forging head is 2-15 degrees; a rotating table for arranging a gear to be processed is arranged on a machine tool workbench during processing, the axis of the rotating table and the axis of the gear to be processed are overlapped, so that the rotating table can be used for accurate indexing so as to process each tooth of the gear to be processed, and the included angle between the rotating axis of the rotating table and the machine tool spindle is the complementary angle of the root angle of the gear to be processed; and a tooth profile mold is arranged on the rotary forging head, and is provided with an annual rotating body which is formed by a trapezoid cross section matched with the tooth profile of the gear to be processed in a way of rotating around the rotation axis of the rotary forging head for one circle. The processing device and method provided by the invention are suitable for processing the hypoid gear, the needed rotary forging driving force is small, the impact to the device is small, and the precision stability of the device during processing is improved.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a hypoid gear rotary rolling processing device and a method for processing a hypoid gear. Background technique [0002] Hypoid gears are widely used in the main reduction transmission of automobile drive axles due to their large reduction ratio and small size. The failure of hypoid gear transmission will cause driving interruption or even accidents. Factors such as easy broken teeth and poor reliability of truck drive axle gears have seriously affected the competitiveness and credibility of domestic vehicles. The traditional processing method of hypoid gears is to use the method of cutting to remove material, such as fan-forming method or forming method, which will leave tool marks on the surface of the tooth profile, form stress concentration on the tooth surface and tooth root, and easily form fatigue cracks or even break , so it is particularly important to research hypoi...

AI Technical Summary

Problems solved by technology

The Chinese patent application with the authorized notification number CN 2743058Y discloses a vibratory swing rolling device, which is to add a periodically changing vibration system to the conventional swing rolling device, so as to complete the combination of vibration and swing rolling, and reduce the forging blank. Oscillation rolling force required for plastic deformation, but existing oscillating rolling equipment is not suitable for processing hypoid gears

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