A screw pump rotor rotary die extrusion forming process and forming device
A technology of extrusion forming and screw pump, which is applied in the direction of metal extrusion dies, metal extrusion mandrels, etc., can solve the problems of high cutting processing cost, long processing cycle, material loss, etc., and achieve high material utilization rate and high molding speed Fast, easy-to-operate results
Active Publication Date: 2021-06-29
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
However, more than 50% of the material is removed during the cutting process, resulting in a great loss and waste of material
And the cutting cost is relatively high, and the processing cycle is long
Method used
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[0040] Specific embodiments of the present invention will be described in detail below in conjunction with specific drawings. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be regarded as isolated, and they can be combined with each other to achieve better technical effects.
[0041] Such as Figure 3-Figure 4 As shown, the embodiment of the present invention is a screw pump rotor rotary die extrusion forming device, including a frame 5, a screw 6, an extrusion cylinder 2, an extrusion cylinder fixing seat 7, an extrusion ejector pin 3, a rotary die 1, Rotary mold holder 8;
[0042] Preferably, the rotary mold 1 is installed in the 8 holes of the rotary mold holder, and the rotary mold 1 is processed with a keyway, and the rotary mold 1 is limited by the first flat key 9; the rotary mold 1 and the 8 holes of the rotary mold holder are tight Coordination; the rotary mold holder 8 is instal...
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Abstract
The invention relates to the technical field of screw pumps, and provides a screw pump rotor rotary die extrusion forming process and a forming device. The process includes: pre-processing a metal blank, turning the outer circle; Lubrication treatment before extrusion; put the lubricated metal billet into the extrusion cylinder, set the movement speed of the extrusion mandrel, the rotational angular speed and torque of the rotating die; extrude the metal billet to obtain the finished product. The forming device includes a frame, a lead screw, an extrusion cylinder, an extrusion cylinder fixing seat, an extrusion ejector rod, a rotating die, and a rotating die fixing seat; the extrusion cylinder is used for placing metal blanks; The movement in the extrusion cylinder realizes the extrusion of the blank; the center of the rotating die axis is provided with a spiral through hole; when the rotating die rotates around the axis, the metal blank extruded by the extrusion ejector rod is formed into a screw pump rotor. The invention can improve the utilization rate of materials in the manufacturing process, reduce the processing cost, improve the processing efficiency, and has broad application prospects.
Description
technical field [0001] The invention relates to the technical field of screw pumps, in particular to a rotary die extrusion forming process and a forming device for a screw pump rotor. Background technique [0002] The screw pump is a rotary pump that relies on the volume change and movement of the meshing space formed by the pump body and the screw to deliver or pressurize the liquid. The central part of the screw pump is the rotor and stator. The rotor is the main rotating component in a single screw pump. The rotor is usually made of metal, which has a unique spatial spiral structure, and each vertical section along the axis of the rotor is a complete circle. At present, the rotors are mostly processed by cutting metal blanks with special cutting processing equipment. However, more than 50% of the material is removed during the cutting process, resulting in great material loss and waste. Moreover, the cutting cost is relatively high and the processing cycle is long. ...
Claims
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IPC IPC(8): B21C23/00B21C23/14B21C25/08
CPCB21C23/005B21C23/14B21C25/08
Inventor 王宝雨李沛艾
Owner UNIV OF SCI & TECH BEIJING