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A high-speed milling-laser cutting and welding composite processing technology and its reconfigurable multi-axis CNC machining system

A high-speed milling and composite processing technology, applied in the field of material processing, can solve the problems of time-consuming and labor-consuming, and achieve the effects of avoiding oxidation or pollution, improving welding quality, and improving convenience and efficiency

Active Publication Date: 2018-04-24
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high-speed milling-laser cutting and welding composite processing technology and its reconfigurable multi-axis numerical control processing system. The present invention can realize the combination of high-speed milling, laser cutting and laser welding on one numerical control system processing, and can realize the switching of the three functions without changing the tooling, complete the entire milling / cutting / welding process of the workpiece, effectively solve the problem of repeated disassembly, The technical problems of low machining accuracy, time-consuming and labor-consuming caused by positioning tooling, thereby simplifying the process flow, greatly improving the machining accuracy and production efficiency of the workpiece, and significantly reducing equipment investment and manufacturing costs

Method used

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  • A high-speed milling-laser cutting and welding composite processing technology and its reconfigurable multi-axis CNC machining system
  • A high-speed milling-laser cutting and welding composite processing technology and its reconfigurable multi-axis CNC machining system
  • A high-speed milling-laser cutting and welding composite processing technology and its reconfigurable multi-axis CNC machining system

Examples

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Effect test

Embodiment 1

[0076] In this example, the processed workpiece is a flat plate with a thickness of 4mm, and the material is 304 stainless steel. It is required to cut the workpiece into a specified size, and then mill the surface of the slit and the trimmed edge to meet the standard of laser splicing and welding, and then perform laser welding on the workpiece. , the processing diagram is as follows image 3 , 4 , 5 shown. The selected laser is IPG 10000W laser, the laser cutting optical part is Precitec YK52 cutting head, the collimating focal length is 125mm, the focusing focal length is 120mm, and the focus spot diameter is 0.2mm; the collimating focal length of the laser welding optical part is 150mm, and the focusing focal length is 250mm. Focus spot diameter is 0.34mm.

[0077] The laser cutting process parameters used in this example are: laser power 3500W, cutting speed 3m / min, defocus distance -3.5mm, nozzle distance from workpiece upper surface 1mm, auxiliary air pressure 1.3MPa,...

Embodiment 2

[0080] In this example, the processed workpiece is a flat piece with a plate thickness of 10mm. The material is AZ31 magnesium alloy. For laser welding, the processing schematic diagram is as follows image 3 , 4 , 5 shown. The selected laser is an IPG 10000W laser, the laser cutting optical part is a Precitec YK52 cutting head, the collimation focal length is 125mm, and the long focusing lens with a focal focal length of 150mm is selected, and the focal spot diameter is 0.24mm; the laser welding optical part has a collimating focal length of 150mm, The focus focal length is 250mm, and the focus spot diameter is 0.34mm.

[0081] The laser cutting process parameters used in this example are: laser power 5200W, cutting speed 1.5m / min, defocus distance -4mm, nozzle distance from workpiece upper surface 1mm, auxiliary air pressure 1.7MPa, cutting gas purity 99.999% of argon. The process parameters of high-speed milling are: the spindle speed is 16000r / min, the feed rate per to...

Embodiment 3

[0084] In this example, the processed workpiece is a flat plate with a plate thickness of 1.5mm, and the material is 5052 aluminum alloy. It is required to cut the workpiece into a specified size first, and then mill the surface of the slit and the trimmed edge to meet the standard of laser splicing and welding. The workpiece is laser welded, and the processing schematic diagram is as follows image 3 , 4 , 5 shown. The selected laser is an IPG 10000W laser, the laser cutting optical part is a Precitec YK52 cutting head, the collimation focal length is 125mm, and the long focusing lens with a focal focal length of 120mm is selected, and the focal spot diameter is 0.2mm; the laser welding optical part has a collimation focal length of 150mm, The focus focal length is 250mm, and the focus spot diameter is 0.34mm.

[0085] The laser cutting process parameters used in this example are: laser power 2500W, cutting speed 5m / min, defocus distance -2mm, nozzle distance from workpiece...

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Abstract

The invention discloses a high-speed milling-laser cutting / welding composite machining process and a reconfigurable multi-axis numerical control machining system thereof. The high-speed milling-laser cutting / welding composite machining process is applicable to machining of metallic and nonmetallic metal materials, and characterized in that high-speed milling, laser cutting and laser welding are integrated on a numerical control machine tool in the form of cutter replacement, during which replacement of equipment and a fixture is not required, and therefore, cutting-milling-welding integrated machining to materials can be implemented. The system comprises a control platform, a numerical control system, a laser device, a numerical control machine tool, a fixture, and a five-axis machining head (including a milling head, a laser cutting power head and a laser welding power head). The five-axis machining head is capable of realizing quick switching among the processing heads to realize different machining ways to workpieces. The high-speed milling-laser cutting / welding composite machining process and the reconfigurable multi-axis numerical control machining system thereof are capable of effectively solving the problems of relatively low machining accuracy and consumption of time and labor due to requested repeated demounting and positioning of the fixture during machining in the past, thereby simplifying a process flow, greatly improving the machining accuracy of workpieces and the production efficiency, and remarkably reducing equipment investment and manufacturing costs.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a mechanical milling-laser cutting and welding composite numerical control processing technology and a reconfigurable multi-axis numerical control processing system, and is especially suitable for high-speed milling-laser cutting and welding of metal materials. Background technique [0002] In recent decades, with the continuous improvement of laser manufacturing technology, laser processing technology has been more and more widely used in industrial production, among which laser cutting and laser welding are the two most widely used technologies in the laser processing industry. [0003] Laser cutting technology is to directly melt or even vaporize the material through the huge energy generated by the laser, and blow off the melted or vaporized material through the auxiliary gas, so as to achieve the purpose of cutting. Compared with traditional cutting m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/04
CPCB23P23/04
Inventor 高明曾晓雁陈聪
Owner HUAZHONG UNIV OF SCI & TECH