Abstract: A multi-beam asynchronous precision laser cutting machine includes a horizontally arranged bed body, longitudinal beams and several gantry cutting mechanisms, which include cross beams, lifting mechanisms and laser optical cutting head, the tops of the two longitudinal beams have first guide rails, and the top of one of the longitudinal beams has a first linear motor, and connecting seats are at the bottoms of both ends of the cross beam, and connecting seats connect the first guide rail slider and the first linear motor mover assembly, a second guide rail, the cross beam top has a second linear motor, and the lifting mechanism is connected through a first slide block connected to the second guide rail and the second linear motor mover assembly, the lifting mechanism includes a servo motor machine and a second sliding seat, and the laser cutting head is fixed on the second sliding seat.

Abstract: A production process for sintering a nickel layer on an aluminum sheet, and to prepare an aluminum sheet with a nickel layer, which can be directly used for tinning and soldering. A fuse that has a sheet-shaped fuse body, the width of the fuse body does not exceed 2 mm, and the thickness of the fuse body does not exceed 0.2 mm. The fuse has a plurality of adjustment holes and/or adjustment grooves are provided in the fuse body. In one embodiment, the fuse body and the corresponding external circuit are integrally formed. In the fuse, welding platforms are protruded at both ends of the fuse body, respectively, and the width of the welding platform is greater than the width of the fuse body.

Abstract: A multi-gantry asynchronous precision laser cutting machine, comprising a horizontally arranged lathe bed, a longitudinal beam and a number of gantry cutting mechanisms; the gantry cutting mechanism comprises a crossbeam, a lifting mechanism and a laser cutting head; a first guide rail is arranged at the top of each of the two longitudinal beams; a first linear motor is arranged at the top of the one longitudinal beam; connecting bases are arranged at the bottom of each end of the crossbeam; the connecting base is connected to a slider of the first guide rail and an actuator component of the first linear motor; a second guide rail is arranged on the side of the crossbeam; a second linear motor is arranged at the top of the crossbeam; the lifting mechanism is connected to a slider of the second guide rail and an actuator component of the second linear motor through a first sliding base; the lifting mechanism comprises a servomotor and a second sliding base; and the laser cutting head is fixed to the second sli