| 摘要 |
#CMT# #/CMT# In a positioning system for high energy beam(s) (40) from (quasi-)point energy source(s) (11), comprising beam collimating and focusing units (20, 30), the source is displaceable relative to the collimating-focusing system in at least one direction transverse to the optical axis (63) of the focusing unit (30), using actuator(s) (71) mounted on a support fixed relative to the collimating-focusing system. #CMT#USE : #/CMT# The system is specifically used in laser machining, especially in welding, repairing or cutting, e.g. for laser welding of steel car bodywork sheets. #CMT#ADVANTAGE : #/CMT# Laser spots are positioned rapidly and easily, both during the static regulation phase and the working phase. Various problems of conventional systems (e.g. slow response times, the use of heavy and bulky equipment and the restriction of access to the laser tool) are eliminated. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows a schematic, partially axial section and partially perspective, view of a high energy beam positioning system for laser machining. 10 : Optical fiber 11 : Outlet end of optical fiber, as energy source 20 : Collimator 21 : Collimating lens 30 : Focusing unit 31 : Focusing lens 32 : Focusing actuator 33 : Linear actuator 40 : Laser beam 41 : Laser spot 51 : Welded injector 63 : Optical axis of focusing unit 71 : Point energy source actuator #CMT#METALLURGY : #/CMT# Preferred Apparatus: The energy source (11) is displaceable by a rotating actuator in at least one curvilinear trajectory in a plane perpendicular to the optical axis (63) of the focusing unit (30); or is displaceable in at least two directions transverse to the beam (preferably perpendicular to each other and to the optical axis), using at least one bi- or polyaxial actuator or at least two actuators (71) mounted in kinematic series (preferably perpendicular to each other) and supported on the collimator (20). At least one lens (31) of the focusing unit (30) is displaceable using actuator(s) (32) (also supported by the collimating-focusing system) relative to the collimator, at least in a transverse direction (preferably perpendicular to the optical axis) and transverse (preferably perpendicular) to a direction of diplacement of the energy source (11) relative to the collimating-focusing system. The energy source is preferably the outlet end of an optical fiber (10) for guiding the high energy energy beam. |
