Fully automatic vibrating cold extrusion plastic forming device and process for medium and small diameter internal threads

Abstract

The invention discloses a full-automatic vibration cold extruding plastic forming device and technology for small-medium-diameter internal threads. The full-automatic vibration cold extruding plasticforming device comprises extrusion taps, the extrusion taps are driven by tapping motors different in forward and reverse rotation angle to achieve vibration tapping and are installed in driving shafts, the driving shafts are installed in guide shafts, and the extrusion taps can move in the axial direction but are limited by chucks; and a semi-finished product feeding mechanism is arranged above the extrusion taps, to-be-machined nuts sequentially enter two feeding rails to be arranged under the action of stirring rods, pushing mechanisms are arranged in front of the extrusion taps, and push rods pushed by pushing motors push the to-be-machined nuts to be sleeved the extrusion taps for tapping machining. The full-automatic vibration cold extruding plastic forming device has the advantagesof being high in machining efficiency and easy to operate. The technology has the advantages that the material utilization rate is high, and the cold-extruded internal threads are high in strength andprecision and good in surface smoothness. Through the full-automatic vibration cold extruding plastic forming device and technology, automatic and efficient machining of internal threads for hexagonnuts with multiple specifications and thicknesses or parts in other shapes can be achieved.

Description

technical field [0001] The invention belongs to the technical field of extrusion plastic forming of internal threads, and in particular relates to a fully automatic vibrating cold extrusion plastic forming device and process for small and medium diameter internal threads. Background technique [0002] Small and medium-diameter internal threaded parts with a nominal diameter of M12-M24mm and a hexagonal, quadrangular or cylindrical shape are very important parts of mechanical transmission and fasteners, and are widely used in engineering practice. At present, the above-mentioned small and medium-diameter internal thread parts are cut and processed on a lathe or a special tapping machine. The former uses an internal thread turning tool for cutting on the lathe, and the latter uses a cutting tap for cutting. In general, the second method is used for processing. [0003] The cutting and tapping method has the disadvantages of low material utilization rate and low mechanical pro...

AI Technical Summary

Problems solved by technology

[0003] The cutting and tapping method has the disadvantages of low material utilization rate and low mechanical properties of threaded teeth due to the cutting of metal fibers in the inner hole. It also has the disadvantages of high frictional resistance on the thread surface caused by rough surfaces such as cutting tool marks left by cutting tools. become an urgent problem

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