专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20210299785A1 LASER WELDING STACKED FOILS 有权
公开(公告)号：US20210299785A1
公开(公告)日：2021-09-30
申请号：US16828194
申请日：2020-03-24
申请人： Corelase Oy
发明人： Matti NÄRHI , Henri PAJUKOSKI
IPC分类号： B23K26/21 , B23K26/073 , B23K26/03
摘要： A method for laser keyhole welding a stack of metal foils to a metal tab is disclosed. The method independently adjusts power in a focused center beam and power in a focused annular beam to form a weld through all the foils and the tab. The annular beam provides sufficient power to heat the metal to about melting temperature, widen a mouth of a keyhole, and stabilize a melt pool. The center beam provides sufficient additional power to form the keyhole. The power of the annular beam is sustained for a longer time than the power of the center beam. A plurality of such welds is formed to provide mechanical strength and electrical conductivity.

2. 发明申请

US20200306878A1 Laser processing apparatus and method 审中-公开
公开(公告)号：US20200306878A1
公开(公告)日：2020-10-01
申请号：US16763237
申请日：2017-12-29
申请人： Corelase Oy
发明人： Jarmo Kangastupa , Arto Salokatve
IPC分类号： B23K26/06 , B23K26/073 , B23K26/24
摘要： The invention concerns an apparatus and its use for laser welding. A laser welding apparatus comprise at least one first laser device, each providing at least one first optical feed fiber with a first laser beam; at least one second laser device, each providing at least one second optical feed fiber with a second laser beam; means for generating a composite laser beam comprising a first output laser beam and a second output laser beam for welding a workpiece; wherein the first output laser beam has a circular cross-section and the second output laser beam has an annular shape concentric to the first output laser beam. The second laser device is a fiber laser device or a fiber-coupled laser device. The apparatus is configured to form the second output laser beam at least on the basis of the second laser beam, and the second output laser beam comprises a first wavelength and a second wavelength having difference of at least 10 nanometers, or the second output laser beam has spectrum width of least 10 nanometers.

3. 发明授权

US11471975B1 Spiral laser welding methods for joining metal 有权
公开(公告)号：US11471975B1
公开(公告)日：2022-10-18
申请号：US17338109
申请日：2021-06-03
申请人： Corelase Oy
发明人： Matti Närhi , Henri Pajukoski
IPC分类号： B23K26/28 , B23K26/073 , B23K26/06 , B23K103/10 , B23K26/0622 , B23K101/34
摘要： Laser welding methods include focusing laser radiation onto a first metal sheet disposed on a metal part, optionally with one or more intervening metal sheets therebetween. The laser radiation is steered to trace at least one spiral path to spot-weld together the metal parts. The laser radiation includes a center beam and an annular beam to maintain a stable keyhole. One method is tailored to weld aluminum parts, e.g., with high gas content and/or dissimilar compositions, and the laser radiation traces first an outward spiral path and then an inward spiral path. The center beam is pulsed during one segment of the inward spiral path. Another method is tailored to weld steel or copper parts having a coating at an interface therebetween, and the laser radiation traces an inward spiral path. The interface may be a zero-gap interface, or a non-zero gap may exist.

4. 发明授权

US11022747B2 Laser processing apparatus and method 有权
公开(公告)号：US11022747B2
公开(公告)日：2021-06-01
申请号：US16464310
申请日：2016-12-08
申请人： Corelase Oy
发明人： Jarno Kangastupa
IPC分类号： G02B6/02 , G02B6/036 , B23K26/06 , B23K26/073 , B23K26/38 , G02B6/28 , G02B6/26 , G02B6/42
摘要： The invention concerns an apparatus and its use for laser processing. The invention also concerns a method and an optical component. According to the invention, at a first laser device, providing a first optical feed fiber and a second laser device providing a second optical feed fiber is provided. A beam combining means connected to the first and second feed fibers and to a multi-core optical fiber is adapted to form a composite laser beam by having the first optical feed fiber aligned with a first core of the multi-core optical fiber and the second optical feed fiber aligned with at least one second core of the multi-core optical fiber. The first and second cores outputs a composite laser beam to a workpiece to be processed. A control unit controls power density of at least one of first and second laser beams of the composite laser beam in at least one of: in response to approaching a change point in direction of cutting progression and to cause change in relation between the power density of the first output laser beam and power density of the second output laser beam in accordance with thickness of the workpiece being cut.

5. 发明授权

US10807190B2 Laser processing apparatus and method and an optical component therefor 有权
公开(公告)号：US10807190B2
公开(公告)日：2020-10-20
申请号：US15580751
申请日：2015-06-09
申请人： Corelase Oy
发明人： Arto Salokatve , Jarno Kangastupa , Tiina Amberla , Tuomo Konnunaho
IPC分类号： B23K26/06 , B23K26/00 , B23K26/22 , B23K26/38 , B23K26/08 , G02B6/02 , G02B6/28
摘要： An apparatus and its use for laser processing along with a method and an optical component. A first laser device provides a first optical feed fiber and a second laser device provides a second optical feed fiber. A beam combining means connected to the first and second feed fibers and to a multi-core optical fiber is adapted to form a composite laser beam by having the first optical feed fiber aligned with a first core of the multi-core optical fiber and the second optical feed fiber aligned with at least one second core of the multi-core optical fiber. The first and second cores outputs a composite laser beam to a workpiece to be processed. A control unit individually controls the power density of the output laser beams.

6. 发明申请

US20180147661A1 Laser processing apparatus and method and an optical component therefor 审中-公开
公开(公告)号：US20180147661A1
公开(公告)日：2018-05-31
申请号：US15580751
申请日：2015-06-09
申请人： Corelase Oy
发明人： Arto Salokatve , Jarno Kangastupa , Tiina Amberla , Tuomo Konnunaho
IPC分类号： B23K26/06 , G02B6/28 , G02B6/02 , B23K26/00 , B23K26/08 , B23K26/22 , B23K26/38
摘要： The invention concerns an apparatus and its use for laser processing. The invention also concerns a method and an optical component. According to the invention, at a first laser device, providing a first optical feed fiber and a second laser device providing a second optical feed fiber is provided. A beam combining means connected to the first and second feed fibers and to a multi-core optical fiber is adapted to form a composite laser beam by having the first optical feed fiber aligned with a first core of the multi-core optical fiber and the second optical feed fiber aligned with at least one second core of the multi-core optical fiber. The first and second cores outputs a composite laser beam to a workpiece to be processed. A control unit individually controls the power density of the output laser beams.

7. 发明申请

US20230001512A1 SPIRAL LASER WELDING METHODS FOR JOINING METAL 有权
公开(公告)号：US20230001512A1
公开(公告)日：2023-01-05
申请号：US17943425
申请日：2022-09-13
申请人： Corelase Oy
发明人： Matti NÄRHI , Henri PAJUKOSKI
IPC分类号： B23K26/28 , B23K26/06 , B23K26/073 , B23K26/0622 , B23K103/10 , B23K101/34
摘要： Laser welding methods include focusing laser radiation onto a first metal sheet disposed on a metal part, optionally with one or more intervening metal sheets therebetween. The laser radiation is steered to trace at least one spiral path to spot-weld together the metal parts. The laser radiation includes a center beam and an annular beam to maintain a stable keyhole. One method is tailored to weld aluminum parts, e.g., with high gas content and/or dissimilar compositions, and the laser radiation traces first an outward spiral path and then an inward spiral path. The center beam is pulsed during one segment of the inward spiral path. Another method is tailored to weld steel or copper parts having a coating at an interface therebetween, and the laser radiation traces an inward spiral path. The interface may be a zero-gap interface, or a non-zero gap may exist.

8. 发明授权

US11446764B2 Laser welding stacked foils 有权
公开(公告)号：US11446764B2
公开(公告)日：2022-09-20
申请号：US16828194
申请日：2020-03-24
申请人： Corelase Oy
发明人： Matti Närhi , Henri Pajukoski
IPC分类号： B23K26/21 , B23K26/24 , B23K26/32 , B23K26/03 , B23K26/073 , B23K103/10 , B23K103/12
摘要： A method for laser keyhole welding a stack of metal foils to a metal tab is disclosed. The method independently adjusts power in a focused center beam and power in a focused annular beam to form a weld through all the foils and the tab. The annular beam provides sufficient power to heat the metal to about melting temperature, widen a mouth of a keyhole, and stabilize a melt pool. The center beam provides sufficient additional power to form the keyhole. The power of the annular beam is sustained for a longer time than the power of the center beam. A plurality of such welds is formed to provide mechanical strength and electrical conductivity.

9. 发明授权

US11351633B2 Laser processing apparatus and method 有权
公开(公告)号：US11351633B2
公开(公告)日：2022-06-07
申请号：US15518510
申请日：2016-07-15
申请人： Corelase Oy
发明人： Jarno Kangastupa
IPC分类号： B23K26/322 , B23K26/06 , B23K26/073 , B23K26/244 , G02B6/02 , G02B6/26
摘要： The invention concerns an apparatus and a method for laser processing. There is provided at least one first laser beam from at least one first optical feed fiber connected to at least one first laser device and at least one second laser beam from at least one second optical feed fiber connected to at least one second laser device. Said first and second laser beams are combined in a multi-core optical fiber. Said first core of said multi-core optical fiber has a circular cross-section, and said second core has an annular shape concentric to said first core. A composite laser beam comprising first and second output beams is directed from said multi-core optical fiber to a workpiece with overlapping elements to be welded.

10. 发明授权

US10666010B1 Fiber laser pump reflector 有权
公开(公告)号：US10666010B1
公开(公告)日：2020-05-26
申请号：US16381715
申请日：2019-04-11
申请人： Corelase Oy
发明人： Jari Näppi , Arto Salokatve
IPC分类号： H01S3/094 , H01S3/067
摘要： A pump reflector for efficiently recycling unabsorbed pump radiation in a diode-pumped fiber laser includes a core for guiding a laser beam, a pump cladding, and a tapered capillary tube. Pump radiation is adiabatically guided in the tapered capillary tube, which includes a mirror that is reflective for the pump radiation. The pump reflector may be packaged as a fiber component for co-propagating or counter-propagating fiber laser amplifiers and resonators.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式