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A kind of inclined hole laser cutting method and cutting device

A technology of laser cutting and inclined holes, which is applied in the field of plate processing, can solve problems such as deformation and uneven cooling of plates, and achieve the effect of increasing heat transfer coefficient, reducing recasting layer and heat-affected zone, and improving uniformity

Active Publication Date: 2022-07-01
NANJING INST OF ADVANCED LASER TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical purpose: Aiming at the problem of uneven cooling and easy deformation of the plate during the cutting process of the existing plate with inclined holes, the present invention discloses a laser cutting method for inclined holes that can be cooled according to the heat field distribution during the plate cutting process and cutting device

Method used

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  • A kind of inclined hole laser cutting method and cutting device
  • A kind of inclined hole laser cutting method and cutting device
  • A kind of inclined hole laser cutting method and cutting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Taking 1.5mm stainless steel X6Cr17 as an example, the laser direction is 90° vertical to the plate. Place the stainless steel plate on the pneumatic clamp, tighten the pneumatic clamp, move the cutting head of the machine tool to the zero position, close the machine tool protection door, set the machine parameters, cutting power 3500W, cutting speed 20m / min, focus position -1.5mm, frequency 5000KHz, Gas pressure 1.8MPa. Running the cutting program, the machine tool runs according to the set program path, and the program controls the laser light-emitting and light-off during the cutting path. The cutting direction is perpendicular to the sheet. There is no burr at the laser outlet of the cut sample, and the cutting edge is smooth.

Embodiment 2

[0054] Taking 1.5mm stainless steel X6Cr17 as an example, the laser direction is at an angle of 80° to the plate, that is, the cutting head is inclined 10°. Place the stainless steel plate on the pneumatic fixture, tighten the pneumatic fixture, move the cutting head of the machine tool to the zero position, close the machine tool protective door, set the machine parameters, cutting power 3500W, cutting speed 15m / min, focus position -1.5mm, frequency 5000KHz, Gas pressure 1.8MPa. Running the cutting program, the machine tool runs according to the set program path, and the program controls the laser light-emitting and light-off during the cutting path. The cutting direction is an angle of 10° with the plate. There is no burr at the laser outlet of the cut sample, and the cutting edge is smooth.

Embodiment 3

[0056] Taking 1.5mm stainless steel X6Cr17 as an example, the laser direction is at an angle of 70° with the plate, that is, the cutting head is inclined 20°. Place the stainless steel plate on the pneumatic clamp, tighten the pneumatic clamp, move the cutting head of the machine tool to the zero position, close the machine protection door, set the machine parameters, cutting power 3500W, cutting speed 10m / min, focus position -1.5mm, frequency 5000KHz, Gas pressure 1.8MPa. Running the cutting program, the machine tool runs according to the set program path, and the program controls the laser light-emitting and light-off during the cutting path. The angle between the cutting direction and the plate is 20°. There is no burr at the laser outlet of the cut sample, and the cutting edge is smooth.

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Abstract

The invention discloses a laser cutting method and a cutting device for an inclined hole. First, a plate is placed on a processing machine tool to be clamped; then a reference zero point of laser cutting is set, a cutting path program is written according to the inclined hole to be processed, and input to the processing machine tool According to the thickness of the plate, set the cutting power and cutting angle of the processing machine tool, and use the simulation software to establish the heat field distribution of the plate during the cutting process; finally start the processing machine tool for cutting, and use nitrogen to blow the slag while cutting. A water mist nozzle is arranged under the plate, and according to the distribution of the heat field, water mist is sprayed to cool the plate to complete the final cutting; the invention uses the plate heat field to control the water mist nozzle to cool the plate correspondingly, so as to improve the uniformity of cooling and avoid the plate Deformation, compared with the traditional processing method, the loss is less, the processing speed is faster, the efficiency is higher, and the control is precise. For materials with different plate thicknesses and materials, the laser cutting method can obtain ideal inclined holes.

Description

technical field [0001] The invention relates to the technical field of sheet metal processing, in particular to a laser cutting method and a cutting device for an inclined hole. Background technique [0002] The traditional method of machining inclined holes in sheet metal is to use mechanical drilling machines or milling machines. For this contact drilling method, it is very difficult to make small holes on inclined surfaces, especially large-angle inclined surfaces, especially for The processing material is a high-strength, high-hardness material, and drilling is almost impossible; therefore, the current mainstream method is to use a laser for drilling, and the process does not contact the workpiece, so the processed workpiece is clean and pollution-free, so it eliminates The residues caused by conventional hot wire perforation and mechanical perforation are eliminated, and the processing process is clean and pollution-free. [0003] However, in the laser cutting process,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/02B23K26/382B23K26/146B23K26/12B23K26/16B23P23/04
CPCB23K26/02B23K26/382B23K26/146B23K26/123B23K26/16B23P23/04
Inventor 于一强朱丽许赟张纪辰谢杨牛岑祚宝
Owner NANJING INST OF ADVANCED LASER TECH
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