METHOD FOR MEASURING THE DEPTH OF PENETRATION OF A LASER BEAM INTO A WORKPIECE, AND LASER MACHINING DEVICE
A method for measuring the penetration depth of a laser beam into a work-piece. A focusing optical unit arranged in a machining head focuses the laser beam in a focal spot. The focal spot produces a vapor capillary in the workpiece. An optical coherence tomograph produces a first and a second measur...
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| creator | BAUTZE, Thibault FRAAS, Christian SCHÖNLEBER, Martin KOGEL-HOLLACHER, Markus |
| description | A method for measuring the penetration depth of a laser beam into a work-piece. A focusing optical unit arranged in a machining head focuses the laser beam in a focal spot. The focal spot produces a vapor capillary in the workpiece. An optical coherence tomograph produces a first and a second measurement beam. The first measurement beam is directed at a first measurement point at the base of the vapor capillary in order to thereby measure a first distance between a reference point and the first measurement point. At the same time, the second measurement beam is directed at a second measurement point on a surface of the workpiece which faces the machining head and which is outside of the vapor capillary measuring a second distance between the reference point and the second measurement point. The depth of penetration of the laser beam is the difference between the second and the first distances. |
| format | Patent |
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A focusing optical unit arranged in a machining head focuses the laser beam in a focal spot. The focal spot produces a vapor capillary in the workpiece. An optical coherence tomograph produces a first and a second measurement beam. The first measurement beam is directed at a first measurement point at the base of the vapor capillary in order to thereby measure a first distance between a reference point and the first measurement point. At the same time, the second measurement beam is directed at a second measurement point on a surface of the workpiece which faces the machining head and which is outside of the vapor capillary measuring a second distance between the reference point and the second measurement point. The depth of penetration of the laser beam is the difference between the second and the first distances.</description><language>eng ; fre ; ger</language><subject>CLADDING OR PLATING BY SOLDERING OR WELDING ; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ; MACHINE TOOLS ; MEASURING ; MEASURING ANGLES ; MEASURING AREAS ; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS ; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS ; METAL-WORKING NOT OTHERWISE PROVIDED FOR ; PERFORMING OPERATIONS ; PHYSICS ; SOLDERING OR UNSOLDERING ; TESTING ; TRANSPORTING ; WELDING ; WORKING BY LASER BEAM</subject><creationdate>2020</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200812&DB=EPODOC&CC=EP&NR=3049755B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200812&DB=EPODOC&CC=EP&NR=3049755B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BAUTZE, Thibault</creatorcontrib><creatorcontrib>FRAAS, Christian</creatorcontrib><creatorcontrib>SCHÖNLEBER, Martin</creatorcontrib><creatorcontrib>KOGEL-HOLLACHER, Markus</creatorcontrib><title>METHOD FOR MEASURING THE DEPTH OF PENETRATION OF A LASER BEAM INTO A WORKPIECE, AND LASER MACHINING DEVICE</title><description>A method for measuring the penetration depth of a laser beam into a work-piece. A focusing optical unit arranged in a machining head focuses the laser beam in a focal spot. The focal spot produces a vapor capillary in the workpiece. An optical coherence tomograph produces a first and a second measurement beam. The first measurement beam is directed at a first measurement point at the base of the vapor capillary in order to thereby measure a first distance between a reference point and the first measurement point. At the same time, the second measurement beam is directed at a second measurement point on a surface of the workpiece which faces the machining head and which is outside of the vapor capillary measuring a second distance between the reference point and the second measurement point. The depth of penetration of the laser beam is the difference between the second and the first distances.</description><subject>CLADDING OR PLATING BY SOLDERING OR WELDING</subject><subject>CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING</subject><subject>MACHINE TOOLS</subject><subject>MEASURING</subject><subject>MEASURING ANGLES</subject><subject>MEASURING AREAS</subject><subject>MEASURING IRREGULARITIES OF SURFACES OR CONTOURS</subject><subject>MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS</subject><subject>METAL-WORKING NOT OTHERWISE PROVIDED FOR</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICS</subject><subject>SOLDERING OR UNSOLDERING</subject><subject>TESTING</subject><subject>TRANSPORTING</subject><subject>WELDING</subject><subject>WORKING BY LASER BEAM</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjEsKwjAURTtxIOoe3gIUlFrEYZrcmqD5kD51WIrEgYgW6v7RQhfg6HIOhzvNHhasvaLKR7IQ9TkadyDWIIXAmnxFAQ4cBRvvBhR0EjUilRCWjGP_M1cfj8FAYknCqTGwQmrjhjuFi5GYZ5N7--zTYtxZRhVY6lXq3k3qu_aWXunTIOTr7X5XFOUm_yP5AqnoNN4</recordid><startdate>20200812</startdate><enddate>20200812</enddate><creator>BAUTZE, Thibault</creator><creator>FRAAS, Christian</creator><creator>SCHÖNLEBER, Martin</creator><creator>KOGEL-HOLLACHER, Markus</creator><scope>EVB</scope></search><sort><creationdate>20200812</creationdate><title>METHOD FOR MEASURING THE DEPTH OF PENETRATION OF A LASER BEAM INTO A WORKPIECE, AND LASER MACHINING DEVICE</title><author>BAUTZE, Thibault ; FRAAS, Christian ; SCHÖNLEBER, Martin ; KOGEL-HOLLACHER, Markus</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3049755B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2020</creationdate><topic>CLADDING OR PLATING BY SOLDERING OR WELDING</topic><topic>CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING</topic><topic>MACHINE TOOLS</topic><topic>MEASURING</topic><topic>MEASURING ANGLES</topic><topic>MEASURING AREAS</topic><topic>MEASURING IRREGULARITIES OF SURFACES OR CONTOURS</topic><topic>MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS</topic><topic>METAL-WORKING NOT OTHERWISE PROVIDED FOR</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICS</topic><topic>SOLDERING OR UNSOLDERING</topic><topic>TESTING</topic><topic>TRANSPORTING</topic><topic>WELDING</topic><topic>WORKING BY LASER BEAM</topic><toplevel>online_resources</toplevel><creatorcontrib>BAUTZE, Thibault</creatorcontrib><creatorcontrib>FRAAS, Christian</creatorcontrib><creatorcontrib>SCHÖNLEBER, Martin</creatorcontrib><creatorcontrib>KOGEL-HOLLACHER, Markus</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>BAUTZE, Thibault</au><au>FRAAS, Christian</au><au>SCHÖNLEBER, Martin</au><au>KOGEL-HOLLACHER, Markus</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR MEASURING THE DEPTH OF PENETRATION OF A LASER BEAM INTO A WORKPIECE, AND LASER MACHINING DEVICE</title><date>2020-08-12</date><risdate>2020</risdate><abstract>A method for measuring the penetration depth of a laser beam into a work-piece. A focusing optical unit arranged in a machining head focuses the laser beam in a focal spot. The focal spot produces a vapor capillary in the workpiece. An optical coherence tomograph produces a first and a second measurement beam. The first measurement beam is directed at a first measurement point at the base of the vapor capillary in order to thereby measure a first distance between a reference point and the first measurement point. At the same time, the second measurement beam is directed at a second measurement point on a surface of the workpiece which faces the machining head and which is outside of the vapor capillary measuring a second distance between the reference point and the second measurement point. The depth of penetration of the laser beam is the difference between the second and the first distances.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PHYSICS SOLDERING OR UNSOLDERING TESTING TRANSPORTING WELDING WORKING BY LASER BEAM |
| title | METHOD FOR MEASURING THE DEPTH OF PENETRATION OF A LASER BEAM INTO A WORKPIECE, AND LASER MACHINING DEVICE |
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