TH25882B - Methods and kits for laser welding - Google Patents

Abstract

DC60 (04/06/45) While the steel plate (W1, W2) is positioned and held by a gripping mechanism (12), the first laser beam (L1) is fired towards the area for Heat (P1) of the steel plate (W1) to keep the sheet (W1) away from the steel plate (W2) at a predetermined distance. A second laser beam (L2) is fired at the welding area (P2) to join the aforementioned steel plates (W1, W2). From the first laser beam (L1), the first laser beam travel speed (L1) and the projected workpiece disc diameter (W1), the first laser beam (L1) remains in a non-molten state and will This causes the sheet (W1) to change its shape in a moldable manner. While the sheet steel (W1, W2) is positioned and held by a gripping mechanism (12), the first laser beam (L1) is fired towards the heating zone (P1) of the plate. To keep the steel plate (W1) a predetermined distance from the plate (W2), the second laser beam (L2) is fired at the welding area (P2) for welding. Steel plates (W1, W2) together. The amount of heat generated by the first laser beam (L1), the travel speed of the first laser beam (L1), and the workpiece disc diameter (W1) being projected, the first laser beam (L1) remain in condition. That will not melt and will cause the sheet (W1) to change shape in a moldable manner.

Claims (5)

1. A method of welding overlapping areas of the workpiece (W1, W2) together with each sheet having a base metal. Which is covered with a layer of metal with a lower melting point To melt the base metal by firing a laser beam at The overlapping area consists of the following steps: positioning and clamping of the welding area (P2) of the workpiece (W1, W2) by gripping mechanism (12) and firing. The first laser beam (L1) goes to the workpiece (W1, W2), located near the gripping mechanism (12), to heat the sheet (W1, W2) so that the sheet is spaced. Jobs (W1, W2) are located at a certain distance from each other as specified. The second laser beam (L2) is fired at a certain area of the worksheet (W1, W2), away from the beam. First laser (L1) is a predetermined distance. To weld a sheet (W1, W2) together and to determine the amount of heat generated by the first laser beam (L1), the speed of the first laser beam (L1) and the diameter of the The focal point of the first laser beam (L1) so that the sheet (W1), which is projected to the first laser beam (L1), remains in a non-molten state. Claim 1, where the gripping mechanism (12) presses the overlapping areas of the worksheets (W1, W2) in order to assign a position to the welding area (P2). (W1, W2) 3. Method for joining the overlapping areas of the workpiece (W1, W2) together with each sheet having a base metal. Which is covered with a layer of metal with a lower melting point To melt the base metal by firing a laser beam at The overlapping area consists of the following steps; Determination of the position and fixation of the welding area (P2) of the workpiece (W1, W2) by gripping mechanism (12) and firing of the first laser beam (L1) onto the workpiece (W1, W2) located near the gripping mechanism (12) to heat the workpiece sheet (W1, W2) and at the same time move the beam. The first laser (L1) goes in the direction of the weld to So that the worksheets (W1, W2) are spaced apart from each other A predetermined distance of the second laser beam (L2) to a certain area of the workpiece (W1, W2), away from the beam. First laser (L1) is a predetermined distance. And at the same time, the second laser beam (L2) is moved in the direction of the welding in such a way that the The stroke is consistent with the first laser beam (L1) so that the workpiece sheets (W1, W2) can be joined together. 4. Method according to claim 3, where the second laser beam (L2) is Leave the first laser beam (L1) as a predetermined distance from 0.5 mm to 20 mm at least in the end of the line in the direction. 5. Method according to claim 3, where the mechanism for gripping (12) will press all the sheets (W1, W2) on the near part. With its welding area in order to determine the position of Welding area (P2) of sheet (W1, W2) 6. Method for welding the overlapping ends of three sheets (W1a, W2a, W3a) by firing a laser beam at the workpiece. It consists of the following steps: positioning and clamping the workpiece (W1a, W2a, W3a) with the gripping mechanism (12) and firing of the same number of laser beams (L1a, L2a) as the interface. At least two places (214, 216), which arise from the contact surfaces of such sheets (W1a, W2a, W3a) to such interfaces (214, 216) at the same time or almost simultaneously. At the same time to get Welding sheets (W1a, W2a, W3a) together. 7. Method according to claim 6 where the amount of heat at Formed by such a laser beam (L1a, L2a) is emitted It depends on the material and / or the thickness of the sheet (W1a, W2a, W3a). 8. Method of claim 6, where the laser beam (L1a, L2a) is emitted. It will be changed Depending on the material and / or the thickness of the workpiece (W1a, W2a, W3a), 9. A set of equipment for joining areas overlapping of the workpiece (W1, W2) together, where Each sheet contains metal. The base is covered with a layer of melting point metal. Below the melting point of the base metal by firing a laser beam. To the area of overlap which consists of the following steps; Gripping mechanism (12) for positioning and clamping the welding area (P2) of the workpiece (W1, W2); Mechanism for firing a laser beam (14) for firing a first laser beam (L1) to a nearby workpiece (W1, W2). With the aforementioned gripping mechanism (12) for heating the sheet (W1, W2), a second laser beam (L2) is fired at one area of the sheet (W1, W2), which is The first laser beam (L1) is the same distance Specify to connect the sheets (W1, W2) together; Mechanism in the move (16) for moving the laser beam at One and the second (L1, L2) as such in the direction of the weld in Characteristics with a consistent rhythm; And a control mechanism (18) for controlling the amount of heat generated Up from the first and second (L1, L2) laser beams 1 0. Unit according to claim 9, where the second laser beam (L2) is spaced from the first laser beam (L1), as follows: Is a predetermined distance ranging from 0.5 mm to 20 mm at least in the end of the wire in the direction of the aforementioned weld 1 1. The equipment set according to claim 9, where the gripping mechanism (12) consists of rotatable rollers (92) for pressing down the sheet (W1, W2) on the part closest to the Its welding area 1 2. Equipment set according to claim 9, where the mechanism for firing the laser beam (14) thereof consists of; Prism (58) for dividing the laser beam (L) introduced into the enclosure (48) into the aforementioned first and second laser beams (L1, L2); The linear path (60) for moving the said prism (58) towards and away from the optical axis (O) of the laser beam (L) to adjust the ratio of Output of the first and second laser beams (L1, L2) thereof; And the rotational path (62) for rotating the said prism (58) according to the aforementioned enclosure (48) to adjust the relative positions of the first and second (L1, L2) laser beams. 1 3.A set of equipment for welding overlapping areas of At least three sheets (W1a, W2a, W3a) by firing a laser beam consisting of; Gripping mechanism (212) for positioning and holding parts Overlapping ends of the workpiece sheet (W1a, W2a, W3a); The mechanism for firing a laser beam (218) for firing a number of laser beams (L1a, L2a) equal to at least two interfaces (214, 216), formed by the contact surfaces of the workpiece (W1a, W2a, W3a). ) To the said interface (214, 216) at the same time. Together or almost simultaneously; And mechanisms to control the amount of heat (220) for controlling the amount The heat generated by the laser beam (L1a, L2a) depends on the material and / or sheet thickness (W1a, W2a, W3a) 1. 4.A set of equipment for welding the overlapping ends of the plates. At least three workpieces (W1a, W2a, W3a) are joined by firing a laser beam consisting of; Gripping mechanism (212) for positioning and holding parts The overlapping ends of the workpiece (W1a, W2a, W3a), the laser beam mechanism (218) for firing the number of laser beams (L1a, L2a) equal to at least two interfaces (214, 216) that occur. Rises from the contact surfaces of the worksheets (W1a, W2a, W3a) to such interfaces (214, 216) at the same time or almost simultaneously; And the shot position control mechanism (222) for controlling the firing position by the laser beam (L1a, L2a), depending on the material and / or the thickness of the workpiece (W1a, W2a, W3a): Said 1 5.A set of equipment for welding the overlapping ends of the plates. At least three workpieces (W1a, W2a, W3a) are joined by firing a laser beam consisting of; Gripping mechanism (212) for positioning and holding parts The overlapping ends of the workpiece (W1a, W2a, W3a), the laser beam mechanism (218) for firing the number of laser beams (L1a, L2a) equal to at least two interfaces (214, 216) that occur. It goes from the contact surfaces of the worksheets (W1a, W2a, W3a) to the said interface (214, 216) at the same time. Together or almost simultaneously; Mechanism for controlling the amount of heat (220) for controlling the amount The heat generated by such laser beam (L1a, L2a) depends on the material and / or The thickness of the sheet (W1a, W2a, W3a) such (15 clauses, 4 pages, 17 photos).