Method and device for turning-milling compound machining of rotor of oil extraction screw pump

Abstract

A method and device for turning-milling compound machining of a rotor of an oil extraction screw pump. A major objective is to provide a method and special device for machining a double-headed rotor of an oil extraction screw pump, which allow easy machining, short period and simple operation. The method is characterized in that: one edge of a triple-headed stator is selected as a cutting line fora cutter; a cylindrical milling cutter may be used as the cutter and the cutter is used to cut the periphery of a rotor; a driving device for a rotor may achieve planetary motion; a rectangular coordinate system is established with the minor axis and the major axis of the cross section of the rotor to be machined; a straight line, parallel to the coordinate axis of the major axis of the rotor, ofa triple-headed curtate hypocycloid of the oil extraction screw pump at an amplitude variation coefficient of 0.5 is taken as an end mill; the planetary motion of a rotor bar to be machined may be achieved by using a fixture; and the size of the section of the rotor and a rotation position of the section may be controlled through the motor of the end mill in the radial and axial directions of therotor bar to be machined, thereby achieving machining of the rotor.

Description

technical field [0001] The invention relates to a method and a realization device applied in the technical field of mechanical processing, in particular to a processing method and device for the rotor of an oil recovery screw pump. Background technique [0002] As a new artificial lift method, screw pump oil production adopts positive displacement pump structure, and uses the planetary motion of the rotor in the inner cavity of the stator to move the sealing cavity upward to lift the oil. It has the advantages of convenient operation, obvious energy saving effect, and low investment. , simple equipment structure and strong adaptability, etc., can effectively reduce the cost of oil production and improve the efficiency of oil production, because it has the incomparable advantages of mechanical production methods such as electric submersible pump, hydraulic piston pump, pumping unit plunger pump, etc., so It has received much attention from oilfields at home and abroad, making...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems mentioned in the background technology, the present invention provides a new processing method and a device for implementing the method. A mechanical planetary motion device is manufactured by using this method. It can process the rotors of oil production screw pumps, thus solving the problems existing in the processing of double-head oil production screw pump rotors, and has the advantages of high production efficiency, short processing cycle and low production cost.

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