Laser helper roll bending formation device and method thereof

A laser-assisted, roll-bending technology, used in laser welding equipment, other manufacturing equipment/tools, welding equipment, etc., can solve problems such as reducing production costs, reducing molding passes, work hardening, etc. The effect of reduced times and high machining accuracy

Inactive Publication Date: 2010-03-10
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects and deficiencies in the prior art, the main purpose of the present invention is to provide a laser-assisted roll forming device and its method, in which the laser beam is used as the heat source in the roll forming process to locally heat the workpiece, thereby overcoming Work hardening and easy cracking problems in the sheet forming process. At the same time, it can also reduce the forming pressure by 30% to 50%, reduce the number of forming passes, and reduce production costs.

Method used

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  • Laser helper roll bending formation device and method thereof
  • Laser helper roll bending formation device and method thereof
  • Laser helper roll bending formation device and method thereof

Examples

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Effect test

Embodiment 1

[0032] Using carbon dioxide laser, the forming section is as Figure 2A shown. At room temperature, a DP800 high-strength steel plate with a thickness of 1.5mm and a width of 72.32mm is formed, the forming speed is 80mm / s, the laser power is set to 300W, and the scanning speed is 6.5mm / s. The surface of the steel plate rises to 700°C in a short time, increasing The forming limit is increased, and after roll forming, such as Figure 2B Shown is a roll-formed section with a complex pointed shape.

Embodiment 2

[0034] Using a helium-neon laser, the forming section is as Figure 3A shown. Forming a Q235 plain carbon steel plate with a thickness of 1mm and a width of 140mm at room temperature, the forming speed is 100mm / s, the laser power is 1000W, the scanning speed is 6.5mm / s, and the spot diameter is 3mm. Figure 3C Shown is a roll-bent section with a ribbed structure.

Embodiment 3

[0036] Using carbon dioxide laser, the forming section is as Figure 4A shown. Forming a SUS304 stainless steel plate with a thickness of 1.2mm and a width of 140mm at room temperature, the forming speed is 60mm / s, the laser power is 2000W, and the laser cutting speed is 3m / min. After roll forming, laser-assisted cutting is carried out. When the laser beam sweeps across the surface of the plate, the local temperature of the steel plate rises above 2000°C instantaneously. After sequential cutting, the following is obtained: Figure 4C U-shaped steel with six holes shown.

[0037] In summary, a laser-assisted roll forming device and method thereof according to the present invention applies laser-assisted heating to roll forming, which solves the problem of difficult forming due to work hardening in conventional roll forming, low cost. In addition, the present invention integrates roll forming, laser cutting and bending forming of plates, has good adjustability and flexibility...

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PUM

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Abstract

The invention relates to a laser helper roll bending formation device and a method thereof, belonging to the roll bending formation technology and equipment field. The laser helper roll bending formation device comprises a roll bending formation machine, a computer control system and a laser system; by adopting the device, in the roll bending formation process, laser is used as heat source to carry out local radiation heating to a part of a board, which is hard to form, so as to improve the formation performance and leading the formation process to be convenient; meanwhile, part of the board can be directly formed by laser and cut. The device has the advantages that: the problems of processing hardening of the board in the roll bending formation process and multi-pass formation are effectively solved, meanwhile, resilience of the board is reduced, the working efficiency is improved and the production period of products is greatly shortened.

Description

technical field [0001] The invention relates to the field of roll forming technology and equipment, in particular to a roll forming device and method based on laser-assisted heating. Background technique [0002] Roll forming technology is to continuously bend coils, strips and other metal strips transversely through sequentially arranged multi-pass forming rolls at room temperature to make profiles with specific cross-sections. Roll-formed steel has the characteristics of reasonable section, high strength, high rigidity, light weight, and high metal utilization rate. It is an economical cross-section section with a wide range of uses, and is widely used in automobiles, construction, machinery, aviation and other industries. [0003] Due to the increasingly complex section shape of the current roll forming products, during the forming process, due to the work hardening of the plate, its strength and hardness increase, and its plasticity and toughness decrease, which brings d...

Claims

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Application Information

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IPC IPC(8): B23P23/02B23K26/00B23K26/38
Inventor 韩飞龙睿芬刘继英艾正青
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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