In a metal laminating and modeling method, a three-dimensional modeled object 10 having a main surface 12 and an outer circumferential surface 13 is modeled by sequentially laminating a plurality of metal layers 11m. The metal laminating and modeling method has a metal layer formation step of forming the metal layers 11m by forming a plurality of weld beads 100 so as to be arranged in a horizontal direction on a table 2, and a first end portion weld bead formation step of inclining the table 2 such that a target surface 2f faces in a first inclination direction and forming first end portion weld beads 100a so as to overlap, among a plurality of center weld beads 100c, the center weld beads 100c located at an uppermost end in a vertical direction Dv.

The invention provides a machine tool (100) having a work table (105) for mounting at least one workpiece (105A), a laser head (101) having a powder nozzle (106) for applying a material to the workpiece and for welding the material to the workpiece (105A), a laser head positioning device for positioning the laser head with respect to the workpiece in order to machine the workpiece (105A) by application and welding of the applied material, an inert gas device (108), fillable with inert gas, for machining the workpiece (105A) by way of the laser head (101) under an inert gas atmosphere, and a positioning device for moving and positioning the inert gas device (108) on the work table (105), said machine tool (100) allowing flexible machining in the scope of subtractive and additive steps of machining a workpiece on a machine tool.

Described is a welding assembly (104) designed to be positioned in line between first rollers (101) and second rollers (103) of a plant (100) for the welding of steel beams with an H profile starting from a first flange (6), a web (7) and a second flange (8) to be welded together, characterised in that it is designed to rotate about itself by 180 about a relative vertical axis, in such a way as to receive the web (7), the first flange (6) and/or the second flange (8), both when coming from the first rollers (101) and when coming from the second rollers (103). The invention also relates to a relative plant (100) for the welding and a method for its operation.

A welding apparatus comprises support members adapted to support parts to be welded, a slit being defined between planes of the support members to expose the parts to be welded. A linear actuator unit having a carriage linearly displaceable along the slit. A welding unit is mounted to the carriage having a torch located substantially below the planes of the support members, and is adapted to be in proximity to the parts via the slit to transmit current to the parts to weld same.

A workpiece support includes a workpiece support element and a suction device. A workpiece is mounted on a workpiece side of the workpiece support element during machining. Towards a remote lower side, the workpiece support element is permeable to a waste air flow loaded with machining-related emissions. The suction device includes a vacuum generator and a suction line. The vacuum generator is configured to generate the waste air flow flowing from the workpiece side to the lower side, to suck off the waste air flow into the suction line in a flow direction and to subsequently discharge the waste air flow via the suction line. The suction line has a suction opening having a flow cross section which can be passed by the waste air flow in the flow direction. An opening width of the flow cross section and/or a position of the suction opening can be variably adjusted.

A joining apparatus includes a table, a pressurizing mechanism, a laser light source that emits laser light, and a controller. The table has permeability to the laser light. Two joining targets are to be placed on the table while a first metal layer and a second metal layer face each other. The pressurizing mechanism includes a diaphragm, and is capable of applying pressure to a back surface of the joining target using the diaphragm from an opposite side to the table. The controller brings the first metal layer and the second metal layer into contact with each other by applying pressure to the back surface of the joining target while the two joining targets are placed on the table, and while maintaining the resultant state, applies the laser light to a place of contact between the first metal layer and the second metal layer through the table.

Disclosed herein is a laser processing method including a first application step of applying a first laser beam having a pulse width shorter than time of electron excitation generated by application of a laser beam to a workpiece, and a second application step of applying a second laser beam within the electron excitation time.

A modular work cell for a production robot includes a base module, on which at least one production robot is arranged, disposed inside the modular work cell. The modular work cell further includes wall elements, a control cabinet, an access, and a feed unit for workpieces which is arranged between the access and the production robot. The base module, the control cabinet, the feed unit and the access form a mechanically and electrically interconnected transport assembly configured for transport. The wall elements can be transported separate from the transport assembly.

A method for dithering can include receiving, at a computer numerically controlled machine comprising a laser, a motion plan corresponding to a first image. The output of the laser can be dithered, in accordance with the motion plan, to effect a change in a material within an interior space of the computer numerically controlled machine. The change can substantially reproduce at least a portion of the first image on the material. The dithering can include providing laser energy to the material at a native resolution based at least on a spot size of the laser. The spot size can be determined based at least on one or more parameters of the computer numerically controlled machine and/or one or more properties of the material. The laser energy can be delivered at locations separated by a distance no less than the spot size.

A work table support device capable of adapting to a plurality of applications. The workpiece support device includes a base; a conductive work table rotatably supported on the base; a current-collecting brush that is fixed to the base, slidably contacts an end face of the work table, and supplies electric power to work table, and a cover that is removably attached to the base, surrounds the current-collecting brush and the end face, and includes cover segments that can be assembled and disassembled one another.