Laser cladding apparatus having adjustable duty ratio

A laser cladding apparatus having an adjustable duty ratio, comprising a reflector holder, a parabolic focusing reflector, a fixed conical reflector, a movable conical reflector, and a powder nozzle, wherein the fixed conical reflector and the parabolic focusing reflector are of annular structures, and reflecting surfaces of the movable conical reflector and the fixed conical reflector are arranged opposite to a reflecting focusing surface of the parabolic focusing reflector so as to reflect, in a circumferential direction, an incident beam in a central axis direction of the parabolic focusing reflector to the reflecting focusing surface to be reflected and focused by the reflecting focusing surface;

• the reflector holder comprises a first annular fixing part arranged on an outer periphery thereof, a second annular fixing part arranged on an inner periphery thereof, and a rib plate connecting the first annular fixing part and the second annular fixing part;
• the parabolic focusing reflector is fixed on the first annular fixing part, and the fixed conical reflector is fixed on the second annular fixing part;
• the reflector holder further comprises a motion adjusting part penetrating through the second annular fixing part and configured to drive the movable conical reflector to move in the central axis direction of the parabolic focusing reflector, the movable conical reflector is fixed to a top end of the motion adjusting part, and the powder nozzle is fixed to a bottom end of the motion adjusting part.