Abstract: A plurality of different laser oscillators are optically connected through respective first laser beam transmission paths to a corresponding number of machining stations. The first laser beam transmission paths are mutually connected optically through laser beam converters and second laser beam transmission paths and the second laser beam transmission paths may be optically connected through laser beam branching devices to a common laser beam transmission path which is optically connected through laser beam branching devices and third laser beam transmission paths to the machining stations, respectively, so that, by suitably controlling the laser beam converters and the laser beam branching devices, a workpiece in one of the machining stations can be machined in various manner with any or any combination of laser beams generated by the laser oscillators.

Abstract: A control apparatus for energy beam hardening which has an electromagnetic wave detector for detecting an electromagnetic wave irradiated from the surface of a hardened portion to which an energy beam is being emitted, a temperature converter for converting a detection signal from the electromagnetic wave detector to a temperature, hardening characteristics presuming means for presuming hardening characteristics by processing temperature distribution data from the temperature converter, energy beam deciding means for deciding the output and moving velocity of the energy beam emitted to obtain desired hardening characteristics and according to hardening characteristics to be presumed, and energy beam control means for controlling at least one of the output and moving velocity of the energy beam according to the output of the energy beam deciding means to thus suppress the irregularities in the hardening characteristics, thereby obtaining hardening characteristics of the hardened material as desired even if pre

Abstract: A laser machining and assembling apparatus comprises a plurality of different laser oscillators, laser beam transmission means for transmitting laser beams from the laser oscillators, a plurality of machining and assembling cells each including a laser machining center for laser maching and assembling workpieces, a machining center for mechanically machining the workpieces to desired configurations, and in-cell transportation robot for transporting the workpieces between the laser machining center, the machining center and a depository of the workpieces, an assembling robot for assembling the workpieces and a controller for controlling operations of the laser machining center, the machining center, the in-cell transportation robot and the assembling robot, inter-cell transportation robot means for transporting the workpieces between the machining and assembling cells and a system controller for controlling operations of the laser oscillators, the machining and assembling cells and the inter-cell transportatio