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	Laser processing machine with a diode laser, which laser beam can rotate around its axis, and method of machining a workpiece
	LÜDI, ANDREAS; WITTWER, STEFAN
	2012-06-27
著作权人	BYSTRONIC LASER AG
专利号	EP2468445A1
国家	欧洲专利局
文献子类	发明申请
其他题名	Laser processing machine with a diode laser, which laser beam can rotate around its axis, and method of machining a workpiece
英文摘要	The laser processing machine (1) comprises a diode laser (2), whose beam is aligned to a workpiece (7) for processing the workpiece, a unit for rotating the laser beam around its jet axis, a controller, and a unit for varying a polarization of the diode laser. The unit for rotating the laser beam is formed by a: drive, which is prepared to rotate the diode laser such that the emitted laser beam is rotated about its beam axis; and a rotatable, motor driven optical element, which is prepared to move a part of the laser beam in the beam path lying behind the optical element. The laser processing machine (1) comprises a diode laser (2), whose beam is aligned to a workpiece (7) for processing the workpiece, a unit for rotating the laser beam around its jet axis, a controller, and a unit for varying a polarization of the diode laser. The unit for rotating the laser beam is formed by a: drive, which is prepared to rotate the diode laser such that the emitted laser beam is rotated about its beam axis; and a rotatable, motor driven optical element, which is prepared to move a part of the laser beam in the beam path lying behind the optical element such that the partial beam is rotated about its beam axis. The optical element is executed as a: light guide, one end of which is disposed adjacent to the diode laser and an other end is motor-driven; Dove prism; and combination of a first mirror, a second mirror and a third mirror, where the mirrors are arranged such that the laser beam from the first mirror is radially directed away from the original axis, from the second mirror is radially directed to the original axis and from the third mirror is radially directed into the original axis. One of the mirrors is driven by a motor. The diode laser is arranged directly above a movable machining head (4) relative to the workpiece. The controller is setup to align the main axis of an asymmetric beam profile and a polarization direction of the diode laser along a machining direction of the laser processing machine, where the main axis of the beam profile and the polarization direction of the diode laser are equally aligned. An independent claim is included for a method of machining a workpiece.
公开日期	2012-06-27
申请日期	2010-12-22
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/58605]
专题	半导体激光器专利数据库
作者单位	BYSTRONIC LASER AG
推荐引用方式 GB/T 7714	LÜDI, ANDREAS,WITTWER, STEFAN. Laser processing machine with a diode laser, which laser beam can rotate around its axis, and method of machining a workpiece. EP2468445A1. 2012-06-27.

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