Device for forming bevel gear through ultrasonic-assisted cold-rocking-rolling and machining method

Abstract

The invention discloses a device for forming a bevel gear through ultrasonic-assisted cold-rocking-rolling. The device comprises a base, a lower die and an ultrasonic horn, wherein the base has an accommodating cavity with an upward opening; the lower die is used for clamping a workpiece; the ultrasonic horn is mounted in the accommodating cavity and comprises a positioning section, a first vibration mounting section and a vibration conversion output section which are sequentially and coaxially arranged along a vertical axis; the positioning section is connected with the base and is positioned in the circumferential direction; a first piezoelectric actuator is mounted on the first vibration mounting section; a second piezoelectric actuator is mounted on the vibration conversion output section; ultrasonic vibration generated by the first piezoelectric actuator and ultrasonic vibration generated by the second piezoelectric actuator are superposed; and the vibration conversion output section makes contact with the workpiece and is used for transferring the ultrasonic vibration to the workpiece. The accommodating cavity is used for accommodating the ultrasonic horn, and ultrasonic vibration with larger vibration energy is generated after the ultrasonic vibration generated by the first piezoelectric actuator and the second piezoelectric actuator on the ultrasonic horn is utilized and superposed, so that the machining requirement is met.

Description

technical field [0001] The invention relates to the field of machining, in particular to a device and a processing method for forming bevel gears by ultrasonic-assisted cold swing rolling. Background technique [0002] In the cold swing forming gear technology, because the cold swing rolling forming gear requires a large force, the gear forming needs to be matched with a large tonnage forming equipment, the manufacturing cost is high, and the forming accuracy is poor, and it is difficult to meet the high-performance gear technology. Require. Under the action of ultrasonic vibration, the material flow pressure of the material is significantly reduced, which is conducive to the plastic flow of the material, that is, the pressure required for molding is reduced. However, usually the equipment has very limited space for the installation of the ultrasonic vibration device, resulting in a small vibration generated by the installed ultrasonic vibration device, which is difficult t...

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Problems solved by technology

However, usually the equipment has very limited space for the installation of the ultrasonic vibration device, resulting in a small vibration generated by the installed ultrasonic vibration device, which is difficult to meet the processing needs

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