Plasma machining production line of dual-trapezoid slotted sieve tube

Abstract

The invention relates to a plasma machining production line of a dual-trapezoid slotted sieve tube, belonging to the field of machining. The production line comprises a main control table, a digital control rotary work table, a plasma machining machine tool, an axial feed driving device, a radial rotary supporting device, an axial guiding and transmission device and a tool body. When processing is performed, the main control table is used for controlling the machining and moving states of the plasma machine tool, the digital control rotary work table, the axial feed driving device, the axial guiding and transmission device and the radial rotary supporting device, the plasma machining machine tool is used for machining slots of the dual-trapezoid slotted sieve tube, the digital control rotary work table drives the slotted sieve tube to perform a rotary indexing movement; when a circle of slots are completely machined, the axial feed driving device drives the slotted sieve tube to move to a designated position axially, the next circle of slots are machined, and the steps are repeated to machine a whole slotted sieve tube. In the invention, modification of a slotted surface material can be realized in the machining process, and the phenomenon of 'match head' does not exist at two ends of the machined slot.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and relates to a plasma processing production line for screen pipes with double trapezoidal slots. Background technique [0002] Slotted screen is the most commonly used downhole sand control tool for sand control in oil and gas wells at home and abroad. The most critical application and the most difficult processing is the micro-fracture. At present, there are two commonly used slotted screen processing methods at home and abroad: mechanical cutting and laser cutting. The mechanical cutting method mainly uses a rotating disc blade to cut the screen pipe seam. It is mainly suitable for cutting a rectangular seam with a seam width greater than 0.4mm (meaning that the seam width is consistent from the outside of the pipe to the inside of the pipe), and the surface processing quality of the seam and Accuracy is poor. Mechanical cutting equipment is mainly composed of a spindle system, an axial...

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Problems solved by technology

At present, there is no literature report on the double trapezoidal slot screen plasma processing line at home and abroad.

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