https://onlinelibrary.wiley.com/doi/pdf/10.1002/phvs.201900015

Adjustable‐Function Beam Shaping Methods

The invention relates to a welding device, including a laser, a laser shaping assembly, a light beam motion control assembly, and a blowing assembly The laser is used to emit laser beams The laser shaping assembly is used to shape the laser beams into light spots The light beam motion control assembly comprises an X-axis swinging lens, an X-axis swinging motor, a Y-axis swinging lens, a Y-axisswinging motor, and a control unit The X-axis swinging motor is connected with the X-axis swinging lens The Y-axis swinging motor is connected with the Y-axis swinging lens The control unit respectively controls the X-axis swinging lens and the Y-axis swinging lens to move through the X-axis swinging motor and the Y-axis swinging motor, to change positions of the light spots illuminated on a workpiece, the light spots being reflected by the X-axis swinging lens and the Y-axis swinging lens, to weld the workpiece The blowing assembly is used to blow shielding gas to the welding positions when welding the workpiece The welding device can satisfy welding requirements of small size circular trace of a liquid injection hole

Welding device and welding method

The present invention relates to an optical module (2) for a machine (1) for machining workpieces and/or for producing moulded bodies by location-selective solidification of material powder to form connected regions by means of a focused laser beam. The optical module (2) comprises a housing (8) having means for releasably attaching the optical module (2) to the machine (1). According to the invention, a plurality of optical components (4, 14) are arranged in or on the housing (8) to collimate and focus the laser beam.

Exchangeable optical module for a laser machining machine

The laser processing machine includes a beam oscillation mechanism that oscillates a beam spot on a surface of a sheet metal. The control device controls the beam oscillation mechanism so as to oscillate the beam spot with an oscillation component in a direction orthogonal to a cutting direction of the sheet metal in a non-holding region, in which a holding portion of the conveyance apparatus for conveying a product is not held, when cutting the product from the sheet metal by irradiating the sheet metal with the laser beam. The non-holding region is at least a part of a periphery of a protrusion portion of the product, or at least a part of a periphery of a recess forming region in which a recess of the product is formed.

Laser processing machine and laser processing method

The invention discloses a beam swinging laser welding method for a titanium alloy, belongs to the technical field of titanium alloy welding, and solves the problems that in the prior art, the tensile strength of a titanium alloy welded joint is insufficient, cracks and holes are easily generated on the surface of a weld, and the titanium alloy welded joint is easy to oxidize. The welding method comprises the following steps of, S1, carrying out the pre-treatment on the surface of a region to be welded of a titanium alloy part to be welded; S2, assembling and fixing the part to be welded; and S3, welding the part to be welded through laser beam swinging, wherein laser moves forwards in parallel to the welding direction, and in the forwarding process, the laser swings periodically in a figure-eight pattern, the swinging amplitude is 3%-20% of the thickness of the part to be welded, the laser power is 1900 w-2300 w, the defocusing amount is 0, and the laser incidence angle is 3-4 degrees. The welding method is suitable for the welding of the titanium alloy.

Beam swinging laser welding method for titanium alloy

A laser cutting head with movable mirrors may be used to move a beam, for example, to provide beam alignment and/or to provide different wobble patterns for cutting with different kerf widths. The laser cutting head includes a cutting nozzle for directing the laser beam together with a gas to a workpiece for cutting. The movable mirrors provide a wobbling movement of the beam within a relatively small field of view, for example, within an aperture of the cutting nozzle. The movable mirrors may be galvanometer mirrors that are controllable by a control system including a galvo controller. The control system may also be used to control the fiber laser, for example, in response to the position of the beams relative to the workpiece and/or a sensed condition in the cutting head such as a thermal condition proximate one of the mirrors.

Laser cutting head with dual movable mirrors providing beam alignment and/or wobbling movement

A laser welding head with movable mirrors may be used to perform welding operations, for example, with wobble patterns and/or seam finding/tracking and following. The movable mirrors provide a wobbling movement of one or more beams within a relatively small field of view, for example, defined by a scan angle of 1-2°. The movable mirrors may be galvanometer mirrors that are controllable by a control system including a galvo controller. The laser welding head may also include a diffractive optical element to shape the beam or beams being moved. The control system may also be used to control the fiber laser, for example, in response to the position of the beams relative to the workpiece and/or a sensed condition in the welding head such as a thermal condition proximate one of the mirrors.

Laser welding head with dual movable mirrors providing beam movement

Laser welding head with dual movable mirrors providing beam movement and laser welding systems and methods using same

FIELD: laser cutting.SUBSTANCE: invention relates to a laser cutting head (versions), an apparatus for laser cutting and a laser cutting method. Movable mirrors are used to move the beam, for example, to adjust the beam and/or create different oscillation patterns for cutting to produce slots of different widths. Head for laser cutting comprises cutting nozzle for directing laser beam and gas to workpiece for cutting. Movable mirrors set oscillatory motion of beam within relatively small visibility range, for example, within aperture of cutting nozzle. Moving mirrors can represent galvanometric mirrors controlled by a control device containing a galvanometer controller. Control device can be used to control fiber laser, for example, in accordance with position of bundles relative to workpiece and/or with read state in cutting head, such as a thermal state near one of the mirrors.EFFECT: laser cutting head with two movable mirrors for beam adjustment and/or oscillatory motion is proposed.23 cl, 8 dwg

Hinrichsen Erik

Papers

Laser cutting head with dual movable mirrors providing beam alignment and/or wobbling movement

Laser welding head with dual movable mirrors providing beam movement

Laser welding head with dual movable mirrors providing beam movement and laser welding systems and methods using same

Laser cutting head with two movable mirrors for beam adjustment and/or oscillatory movement

Laser welding system with a laser welding head having with dual movable mirrors providing beam movement with limited field of view