Auxiliary cold extrusion machining device with large diameter and inner thread based on electromagnetic vibration exciter

Abstract

The invention relates to an auxiliary cold extrusion machining device with large diameter and inner thread based on an electromagnetic vibration exciter. The auxiliary cold extrusion machining device is characterized by comprising a base (4), a fixing plate (7), a torsional vibration plate (3) and an electromagnetic vibration exciter (5), wherein the base (4) is arranged on a machine tool slide carriage (8); the fixing plate (7) is arranged on the base (4) and equipped with an adjustable length to the machine tool slide carriage (8); one end of the fixing plate (7), which is far away from an extrusion tap fixture (1), is provided with a stretching screw (6); the fixing plate is also provided with at least one guide slot (9); the torsional vibration plate (3) is arranged on the fixing plate (7) through a connection bolt (10) which has a guide function and penetrates through the guide slot (9) on the fixing plate (7); one end of the torsional vibration plate (3) abuts against a torsional vibration rod (2) arranged on the extrusion tap fixture (1), and the other end abuts against the stretching screw (6); and the electromagnetic vibration exciter is fixedly arranged on the trosional vibration plate (3) and drives the torsional vibration plate (3) to vibrate synchronously. The invention has the advantages of simple structure, flexible operation and convenient realization and is beneficial to improving processing quality, prolonging the service life of cutters and reducing production cost.

Description

technical field [0001] The invention relates to a large-diameter internal thread cold extrusion auxiliary processing device, in particular to an auxiliary large-diameter internal thread cold extrusion processing device using vibration processing technology, specifically a large-diameter internal thread extrusion processing device based on an electromagnetic exciter. Thread cold extrusion auxiliary processing device. Background technique [0002] With the rapid development of modern industry, in my country's aviation, aerospace, high-speed train, oil drilling, transportation and other industries, more and more precision instruments and parts under large load, high speed and dynamic load factors have appeared. The performance of fasteners and its anti-fatigue manufacturing technology put forward higher requirements, not only requiring high precision, high hardness, and low surface roughness of the thread, but also requiring the thread to have high-quality surface integrity. As...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the taps are easy to break, the cooling liquid is difficult to flow into the extrusion zone in the existing large-diameter internal thread cold extrusion process, and the surface integrity of the thread after processing is not ideal. A large-diameter internal thread cold extrusion auxiliary processing device based on an electromagnetic exciter that can be widely used in large-diameter internal thread cold extrusion

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