Adaptive Laser Joining Of Stator And Rotor Laminations

摘要

The invention relates to an apparatus and a method of adaptive laser joining of stator and rotor laminations allowing individual laminations to be joined with a lower expenditure of energy. For detecting the joining point a sensor (4) is used, which transmits the signal through a filter (5) to a first microcontroller (7), where the signal is processed and transmitted, in turn, to the second microcontroller (8), which then provides for the correct triggering, delaying, or modulation of the laser beam. The software in the microcontrollers allows arbitrarily modulating the continuous beam with adjustable parameters, or triggering an arbitrary number of pulses per gap. The system allows pulse as well as continuous laser sources (11) to be used.

主权项

1. Method of adaptive laser joining of stator and rotor laminations, wherein laser joining of individual laminations only takes place where two adjacent laminations come into contact, the method comprising:
detecting an individual gap between laminations by means of a sensor (4) in real time; based on the signal from the sensor (4), triggering an individual laser pulse, or based on the signal from the sensor (4), performing a software-driven modulation of the signal with parameters defined beforehand, and controlling the continuous laser beam by means of the modulated signal; wherein the detection of an individual gap by means of the sensor (4) in real time comprises adjusting the detection range of the sensor (4), transmitting the signal from the sensor (4) through a filter (5) to a microcontroller (7) in a control unit (10), which transforms the analog signal to digital under certain conditions, defined beforehand and obtained by testing various thicknesses of the individual laminas, sending the digital signal to a microcontroller (8), which delays the original signal in order to allow for the correct positioning of the sensor (4) relative to the gap in the workpiece (1); the triggering of the individual laser pulses and the controlling of the continuous laser beam, respectively, being controlled by means of the microcontroller (8) in the control unit (10).