Laser cutting method for angle of rotation

A technology of laser cutting and corner turning, which is applied in the direction of laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of reduced cutting speed, increased nitrogen consumption, and reduced processing efficiency, so as to reduce impermeable cutting and reduce loss rate , the effect of improving the service life

Active Publication Date: 2009-07-08
HANS LASER TECH IND GRP CO LTD
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Problems solved by technology

[0005] There are two ways to deal with this situation in the past laser cutting machine tools: one is to increase the cutting nozzle to increase the flow rate of high-speed auxiliary nitrogen gas used for cutting. Gas flow for removing molten metal is adequate, but nitrogen consumption increases
The second is to reduce the cutting speed. After the cuttin

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  • Laser cutting method for angle of rotation
  • Laser cutting method for angle of rotation
  • Laser cutting method for angle of rotation

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Example Embodiment

[0016] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0017] Such as figure 1 , The laser cutting method for the corner of the present invention is suitable for high-power laser cutting machine tools for laser cutting of thick stainless steel materials (above 3MM).

[0018] Such as Figure 2 to Figure 4 , Perform the following process control on the cutting speed magnification at the track corner (such as Figure 4 ), the steps are as follows:

[0019] a: At the contour corner of the cutting path, the CNC control system judges the contour corner angle according to the cutting contour shape;

[0020] b: Set the cutting machine tool to the motion pause delay state, and preset the minimum speed override parameter P171 value at the corner, and write the CNC control system through control, so that the speed override of the CNC control system is set to the minimum speed override parameter P171...

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Abstract

The invention relates to a laser cutting method for a corner. In the invention, a PLC control program is adopted to control the speed magnification of a CNC numerical control system, so that a machine tool automatically reduces speed magnification and obtains relatively low cutting speed at a contour corner of a cutter path; after smoothly passing through the contour corner of the cutter path, the machine tool gradually raises cutting speed to the normal cutting speed, so that the machine tool can not only reduce cutting speed at the contour corner of the cutter path and smoothly carry out cutting without increasing nitrogen flow for supporting cutting, but also ensure that the machine tool can carry out cutting at normal speed at other sections of the cutter path, thus obtaining relatively high processing efficiency. Moreover, as the control of the processing machine tool is improved, insufficient cutting and rejected slag in the laser cutting process are greatly reduced, thus well protecting a focus lens from being polluted by cutting rejected slag, prolonging the service life of the focus lens and reducing attrition rate thereof.

Description

【Technical field】 [0001] The invention relates to a laser cutting method, which is especially suitable for laser cutting of thick plate stainless steel by a high-power laser cutting machine tool. 【Background technique】 [0002] When laser cutting machine tools cut thick plates (above 3MM) stainless steel plates, there are phenomena such as difficulty in cutting smoothly, impermeable cutting, and anti-slag at the corners of the contour of the cutting path. Scrap, resulting in an increase in the processing scrap rate of the machine tool, an increase in material costs, and an increase in maintenance costs for consumable parts (focusing lenses). [0003] The process of laser cutting machine cutting stainless steel plate is: use high-power-density laser beam to irradiate the metal plate, so that the metal material at the irradiated place will be melted, vaporized and ablated immediately, and at the same time, the high-speed auxiliary nitrogen flow coaxial with the laser beam will...

Claims

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Application Information

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IPC IPC(8): B23K26/38
Inventor 高云峰向水平
Owner HANS LASER TECH IND GRP CO LTD
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