Disclosed a laser marking machine, method, equipment and system. The method comprises steps of: the control main board receiving coordinate and gray scale value of the target image pixel dot; calculating output power of the target image pixel dot by using the gray scale value; and controlling the laser device to use corresponding output power according to displacement of the galvanometer, and outputting laser specific to each target image pixel dot. By adjusting the output power of target image pixel dot (marking point), a separate pixel dot may reflect the change of gray scale value, so as to represent the image gray scale value. The coordinate of each pixel dot in the gray scale image may be calculated according to the predetermined resolution, such that, the coordinate of pixel dot is no longer adjusted, ensuring the DPI and the resolution of the gray scale image.

A method of welding a first metal plate and a second metal plate that is thicker than the first plate, by a laser beam. The first plate and the second plate are disposed to overlap one another in a thickness direction. In a first laser irradiation step, the laser beam is emitted at the first plate, to form an initial nugget including a front-side nugget portion in the first plate, a back-side nugget portion in the second plate and having a diameter smaller than a diameter of the front-side nugget portion, and an annular flat surface portion existing between the front-side nugget portion and the back-side nugget portion. In a subsequent laser irradiation step, the laser beam is emitted again at the initial nugget after the initial nugget is solidified, thereby increasing the diameter of the back-side nugget portion.

A plasma cutting system for measuring or monitoring the voltage between a plasma torch and the material being cut to determine a voltage or voltage signature and comparing that measurement against predetermined values to indicate that an initial pierce of the material is complete, and based on the measurement, moving the torch or the material to a different location for additional cutting. The system further provides a Fix Drawing Tool, which will automatically detect and fix gaps or overlaps in a drawing that are very difficult to find visually. These gaps and overlaps become a problem when trying to make a proper toolpath because a CAM program requires a clean, closed shape. The system also provides a Dynamic Corner Looping system, which automatically adjusts with the feed-rate and accelerations of the toolpath and plasma machine, eliminates unwanted dross, sharpens corners and minimizes material loss. A pendant tethering system is also disclosed for managing control of a CNC machine remotely. Additional disclosed functionality includes a data collection system, a manual hand wheel with 3D simulation and a multiple fabrication head management system.

A method for removing a plastics coating from a block of food, in particular a whole cheese, operates with the following steps: the block of food, in particular the whole cheese with its plastics coating is fed to the method. A laser beam is then directed onto the plastics coating of the block of food. Herein the output of the laser which emits the laser beam is adjusted so that a removal of the plastics coating takes place by separation of a region of the plastics coating and/or by erosion or vaporisation of the plastics coating. A device for removing a plastics coating from a block of food, in particular a whole cheese, comprises a transport apparatus for the block of food and a laser apparatus for applying a laser beam to the block of food.

Provided is a method for determining a laser irradiation state whereby the output of a laser can be acquired with high accuracy. This method for determining a laser irradiation state determines the irradiation state of a laser irradiated by a laser irradiation device and includes: an output stabilization time acquisition step for acquiring, as an output stabilization time, the time from the start of laser irradiation by the laser irradiation device until the stabilization of the output of the laser; an energy acquisition step for acquiring, after the output stabilization time or longer has elapsed from the start of the laser irradiation by the laser irradiation device, the energy of the laser irradiated by the laser irradiation device in a pre-set prescribed period; a conversion step for converting the acquired energy to the output of the laser irradiated by the laser irradiation device; and a state determination step for determining the irradiation state of the laser on the basis of the converted output of the laser.

A system for machining materials by means of laser beam includes a deflection device for deflecting the laser beam and a wobble device configured to superimpose a wobble movement of the laser beam with a wobble figure and a wobble frequency onto a feed movement of the laser beam corresponding to a machining path by controlling the deflection device. The wobble device is configured, for carrying out the wobble movement, to control the deflection device according to a compensated wobble movement. Control values for a deflection of the laser beam along the wobble figure are adapted as a function of the wobble frequency and/or a path speed of the wobble movement that varies along the wobble figure is adapted as a function of a position of the laser beam in the wobble figure and as a function of the wobble frequency.

A laser processing head is presented. The laser processing head includes a laser entry module for introducing a laser beam; a collimating module for collimating the laser beam; a scanning module for deflecting the laser beam; a focusing module for focusing the laser beam; and at least one diaphragm for increasing a scan field of the laser beam. The diaphragm comprises a diaphragm body and an opening, and is configured to limit a cross-sectional area of the laser beam by the diaphragm body. The at least one diaphragm is positioned optically downstream of the laser entry module and optically upstream of the focusing module. A laser processing system including the laser processing head is also presented. Furthermore, a method for increasing a scan field of the laser beam is also provided.

A visible light laser system and operation for welding materials together. A blue laser system that forms essentially perfect welds for copper based materials. A blue laser system and operation for welding conductive elements, and in particular thin conductive elements, together for use in energy storage devices, such as battery packs.

A hairpin welding method welds wire ends of at least two copper wires, arranged flush next to one another, to one another by a laser beam. The laser beam is generated with a beam cross section that impinges on the wire ends at an end side and has a round core region and a ring region surrounding the round core region. A ratio of an external diameter of the ring region to a diameter of the core region is between 7:1 and 2:1. A ratio of a laser power in the core region to a laser power in the ring region is between 10:90 and 70:30.

A method of refurbishing a singulated fuel cell stack interconnect includes scanning a first pulsed laser beam on an air side of the interconnect to vaporize seal and corrosion barrier layer residue without vaporizing a metal oxide layer located on the air side of the interconnect below the corrosion barrier layer residue, and scanning a second pulsed laser beam which is different from the first pulsed laser beam on the exposed metal oxide layer on the air side of the interconnect to reflow the metal oxide layer without removing the metal oxide layer.