A rotary cutting tool

Abstract

The invention relates to a rotary cutting tool used for cutting burrs on inner mesh holes of a sand control screen. The rotary cutting tool comprises a positioning disc, two tool boxes, and two tool bits; the center of the positioning disc is provided with an external connector; each tool box is provided with a tool groove; the tool boxes are symmetrically disposed on one side, far away from the external connector, of the positioning disc; the tool grooves of the tool boxes stagger, and openings of the tool grooves face in opposite directions; the tool bits are disposed in the tool grooves; the tool bits are partially thrown out of the tool grooves under the action of centrifugal force. When cutting burrs, the rotary cutting tool is softly stressed, so that the damage of the tool boxes by the tool bits is decreased and the service lives of the tools are prolonged. Cutting noise is significantly reduced, cutting stability is improved, comprehensive operating efficiency is increased by more than 30%; since radial component force is produced during rotation cutting, impact is relived, and maintenance cost of tools and motors is decreased by more than 50%.

Description

technical field [0001] The invention relates to a rotary cutting tool, in particular to a rotary cutting tool for cutting burrs. Background technique [0002] In the production of sand control screens, it is necessary to drill holes in the base pipe (oil pipe or casing). These holes are diversion holes for crude oil to flow from the outside of the sand control screen to the inside of the sand control screen. After the base pipe is drilled, burrs will be attached in the hole. If the burrs are not removed cleanly, it will have a great impact on the oil production equipment. Therefore, the deburring process is very important in the production of screen pipes. The deburring method is divided into manual removal and rotary mechanical removal. [0003] At present, a vertical centrifugal rotary cutting tool is generally used for cutting burrs in the removal of rotary machines. The rotary cutting tool includes a tool box, a first cutter head and a second cutter head. The knife bo...

AI Technical Summary

Problems solved by technology

[0006] One is that when the cutting resistance of the cutting surface is too large, the cutter head is easy to be stuck, causing stuffy car or damage to the cutter head and motor; second, when the cutting tool needs to be taken out, under the action of gravity, part of the cutter head is still on the Outside the knife box, when the knife is taken out from the base tube, it is easy to cause damage to the base tube thread, and in severe cases, the base tube will be scrapped

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