Laser cutting device for large irregular pipe cross section

Abstract

The invention discloses a laser cutting device for a large irregular pipe cross section. The technology of driving motor and alternating current servo motor separately driving and motor direct drivingtechnology are adopted. A driving motor is used for driving an alternating current servo motor and a laser cutting head thereof to rotate. Infrared distance measurement is adopted to form a closed-loop control basis of the alternating current servo motor adjusting retraction of the laser head. The alternating current servo motor drives two screw nut pairs withrotation direction reverse to the integrated rotation direction of a motor rotor to open and close to adjust the distance between the laser head mounted at one nut pair and the pipeline inner wall, and counter weight of the laser head end is achieved in real time by a counter weight block of the other nut pair meanwhile. The device is suitable for pipeline cross section cutting with different shapes, and centering positioning operation is not required. The device has the advantages that the structure is compact, operation is convenient, assembling and disassembling are simple, and working efficiency is high. The assembling and disassembling time is greatly shortened, and adjusting difficulty is reduced.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing technology, and relates to a laser cutting device for large irregular pipe sections, which is used for non-contact cutting of large irregular pipe sections. Background technique [0002] As a modern precision processing method, laser cutting uses a focused high-power-density laser beam to irradiate the workpiece, so that the irradiated material is rapidly melted, vaporized, ablated or reaches the ignition point, and at the same time, it is blown away by the high-speed airflow coaxial with the beam. The material is melted to cut off the workpiece; laser cutting is one of the thermal cutting methods; compared with traditional processing methods, laser cutting has the advantages of good cutting quality, high cutting efficiency, accurate size, fast cutting speed, strong adaptability and flexibility, The cutting process has the advantages of non-contact and a wide variety of materials ...

AI Technical Summary

Problems solved by technology

For the cross-section cutting of metal pipes at the joints, most of them are external clamping pipe cutting machines; but for pipes with too large diameters, the clamping of external clamping pipe cutting machines is heavy and complicated, and the cutting speed is slow. The diameter of the pipe is fixed, and an external card type pipe cutting machine can only cut a pipe with a fixed diameter, which cannot be adjusted, and is mostly used for cutting near the port

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