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发明授权
CN106068169B 具有靠近工件的横向喷嘴的激光加工头 有权

具有靠近工件的横向喷嘴的激光加工头
摘要：
激光加工头(1)，具有：聚焦光具(2)，其用于将激光射束(3)向工件(5)的加工区(4)聚焦；和横向喷嘴(6)，其用于产生横向流(7)，该横向流横向于被聚焦的激光射束(3)的射束轴线(8)地、尤其与其成直角地穿过被聚焦的激光射束(3)，在该激光加工头中横向喷嘴(6)与工件(5)的间距(D)小于20mm、尤其在8mm到12mm之间。优选在所述被聚焦的激光射束(3)的侧旁设置喷嘴体(10)，其具有朝工件(5)敞开的底部开口(11)，保护气体(12)从该底部开口流出，其中，所述底部开口(11)布置在所述横向喷嘴(6)的下方，以便位于喷嘴体(10)和工件(5)之间的保护气体(12)通过横向喷嘴(6)的横向流(7)在横向(13)上被携动至少这么远：该保护气体流过加工区(4)。
摘要（英）：

A laser machining head includes a focusing optical unit for focusing a laser beam in a direction of a machining zone of a workpiece and includes a cross-jet nozzle for producing a cross flow that passes through the focused laser beam transversely (e.g., at a right angle to) a beam axis of the focused laser beam. The distance of the cross-jet nozzle from the workpiece is less than 20 mm (e.g., between 8 mm and 12 mm). A nozzle body having a bottom opening that faces downward toward the workpiece is provided laterally adjacent to the focused laser beam. A protective gas flows out of the bottom opening, which is arranged below the cross-jet nozzle in order to entrain the protective gas flowing between the nozzle body and the workpiece due to the cross flow of the cross-jet nozzle so that the protective gas flows over the machining zone.

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