Extrusion device and extrusion method for hollow helicoid rotor profile with internal keyway

Abstract

The invention discloses an extruding device and an extruding method for a hollow helicoid rotor profile with internal key grooves. The device includes an upper die and a lower die; one end of the upper die is provided with at least one diversion chamber, and the other end communicates with the diversion chamber There are at least two diversion holes; a diversion bridge is arranged between two adjacent diversion holes; a blocking platform is arranged at the intersection of two diversion bridges; a mold core is connected to the end of the upper mold far away from the diversion chamber; One end of the connected lower mold is at least set as a first-level welding chamber, and the end of the welding chamber away from the upper mold is connected with the die opening of the lower mold, and the end of the mold core away from the upper mold is sequentially inserted into the welding chamber and the die opening of the lower mold; The flow chamber, the distribution hole, the welding chamber and the lower mold mouth are connected in sequence; the outer wall of the mold core is provided with a transition key structure and a key structure that are matched and connected. The extrusion method of the present invention based on the above-mentioned device adopts light alloy to directly extrude the hollow rotor, has high processing efficiency and billet utilization rate, and low production cost.

Description

technical field [0001] The invention relates to the technical field of metal extrusion, in particular to a hollow helical rotor profile extrusion device and an extrusion method with an inner key groove. Background technique [0002] As the core component of mechanical supercharger, screw compressor, helical rotor flowmeter and other equipment, helical rotor is widely used in important fields such as automobile, machinery, chemical industry, metallurgy, construction, mining and aerospace. At this stage, the processing of helical rotors is mainly based on various cast or forged steel round bars as raw materials, which are formed by traditional machining (such as hobbing, milling, turning, grinding, planing, etc.). On the one hand, traditional machining has high requirements on machine tool structure and tool design, and is difficult to machine, which limits its application scope, and has low machining efficiency, waste of raw materials, and extremely high production costs, whi...

AI Technical Summary

Problems solved by technology

However, there is currently a lack of extrusion methods and processes for helicoidal rotor profiles with continuous hollow and internal connection structures.

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