Metal sheet laser precision perforating device assisting in foaming
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A punching device and metal sheet technology, applied in laser welding equipment, metal processing equipment, welding equipment, etc., can solve problems that cannot be eliminated, achieve good roundness, solve burr problems, and improve the quality of the inner wall
What is AI technical title?
AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A punching device and metal sheet technology, applied in laser welding equipment, metal processing equipment, welding equipment, etc., can solve problems that cannot be eliminated, achieve good roundness, solve burr problems, and improve the quality of the inner wall
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[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0032] Such as figure 1 As shown, the present invention provides a foaming-assisted metal sheet laser precision drilling device, including a laser, a laser processing head, a metal sheet workpiece 8 to be processed, a substrate 7, a high-temperature foaming agent 6 and a sealed suction cover 3 .
[0033] The sheet metal workpiece 8 to be processed is installed on the substrate 7 , and the hardness of the substrate 7 to be processed is greater than that of the sheet metal workpiece 8 . The high-temperature foaming agent 6 is coated on the upper surface of the substrate 7 or the lower surface of the metal sheet workpiece 8, the thickness of the high-temperature foaming agent 6 is 0.01mm-1mm, and the foaming temperature is above 150 degrees.
[0034]The laser processing head includes a light guide path, a focusing lens 2 and a mirror b...
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Abstract
The invention provides a foaming-assisted sheet metal laser precision boring method. The method includes: (1) mounting a sheet metal workpiece on a machining base plate, coating with a layer of high-temperature foaming agent between the sheet metal workpiece and the machining base plate, and covering the upper surface of the sheet metal workpiece with a sealed suction hood; (2) sucking air outwards through the suction hood to enable the sealed suction hood to be always kept in a negative-state internally; (3) outputting a laser boring pulse through a laser device; (4) keeping a laser beam to continue irradiating for 1ms-500ms, and then ending the laser boring pulse; (5) moving a focus position of the laser beam to a next position needing boring, and repeating the steps (3) and (4) till all holes are machined; (6) after all the holes are machined, taking down the workpiece. Since the method is adopted for laser boring, good hole roundness, no burr at edges of outlets and small hole diameter deviation between hole inlets and the outlets can be guaranteed. The invention further provides a foaming-assisted sheet metal laser precision boring device.
Description
[0001] This application is a divisional application with an application date of March 19, 2014, an application number of 201410116060.X, and a title of "a method and device for laser precision drilling of metal sheets assisted by foaming". technical field [0002] The invention belongs to the field of laser processing, and in particular relates to a foaming-assisted laser precision drilling method and device for a metal sheet. Background technique [0003] Foaming agent is a kind of substance that makes the target substance form pores, and it can be divided into three categories: chemical foaming agent, physical foaming agent and surfactant. Chemical blowing agents are those compounds that release gases such as carbon dioxide and nitrogen after thermal decomposition, and form pores in the polymer composition; physical blowing agents are foam pores, which pass through the physical form of a certain substance The change is formed by the expansion of the compressed gas, the vol...
Claims
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