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公开(公告)号：EP3832251A1
公开(公告)日：2021-06-09
申请号：EP20211434.4
申请日：2020-12-03
申请人： Adige S.p.A.
摘要： A method and a system are described for determining the separation distance between an object or a material and a processing tool or an instrument for measuring the object or material, comprising:
- generating a measurement low coherence optical radiation beam, leading the measurement beam towards the object and leading the reflected or diffused measurement beam from the object towards an optical interferometric sensor arrangement in a first direction of incidence,
- generating a reference low coherence optical radiation beam, and leading the reference beam towards the optical interferometric sensor means in a second direction of incidence at a preset angle of incidence with respect to the first direction of incidence of the measurement beam;
- superimposing the measurement beam and the reference beam on a common region of incidence of the sensor means;
- detecting the position of a pattern of interference fringes between the measurement beam and the reference beam on the region of incidence; and
- determining a difference in optical length between the measurement optical path and the reference optical path on the basis of the position of the pattern of interference fringes along an illumination axis of the region of incidence, which is indicative of a difference between (a) the current separation distance between the processing tool or measuring instrument and the surface of the object and (b) the predetermined nominal separation distance,
wherein the sensor means comprise an arrangement of photodetectors along the illumination axis, and the angle of incidence is controlled in such a way that the spatial frequency of the pattern of interference fringes is greater than the spatial frequency of the photodetectors.-
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3.发明公开METHOD FOR CONTROLLING A LASER CUTTING PROCESS AND LASER CUTTING SYSTEM IMPLEMENTING THE SAME 有权方法Steurung激光切割工艺以及相关的激光切割装置
公开(公告)号：EP2699380A1
公开(公告)日：2014-02-26
申请号：EP12722866.6
申请日：2012-04-20
申请人： Adige S.p.A.
发明人： SBETTI, Maurizio , BERTOLDI, Stefano , COLOMBO, Daniele , PREVITALI, Barbara , RIVA, Giovanni , DANESI, Matteo , MOLINARI TOSATTI, Lorenzo , PARAZZOLI, Diego
CPC分类号： B23K26/12 , B23K26/032 , B23K26/0622 , B23K26/123 , B23K26/1476 , B23K26/38 , B23K2201/18 , B23K2203/04
摘要： Laser cutting processes are provided which are controlled using as a reference signal one or more emission lines which are characteristic of the radiation emitted by a gas or, more generally, by an emitting element present in the volume irradiated by the laser beam focussed by a laser head and adjusting, on the basis of this reference signal, at least one of the following process control parameters: the power of the laser, the frequency and the duty cycle of the laser pulse, the pressure of an assisting gas emitted by a nozzle forming part of the laser head, the relative speed of the laser head with respect to the workpiece, the distance between the laser head and the surface of the workpiece, and the distance between the focal point of the laser beam and the surface of the workpiece. Laser cutting devices are also provided.
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公开(公告)号：EP4070037A1
公开(公告)日：2022-10-12
申请号：EP20830316.4
申请日：2020-12-04
申请人： Adige S.p.A.
IPC分类号： G01B9/02
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6.发明授权METHOD FOR CONTROLLING A LASER CUTTING PROCESS AND LASER CUTTING SYSTEM IMPLEMENTING THE SAME 有权控制激光切割工艺的方法和实现该切割工艺的激光切割系统
公开(公告)号：EP2699380B9
公开(公告)日：2016-11-23
申请号：EP12722866.6
申请日：2012-04-20
申请人： Adige S.p.A.
发明人： SBETTI, Maurizio , BERTOLDI, Stefano , COLOMBO, Daniele , PREVITALI, Barbara , RIVA, Giovanni , DANESI, Matteo , MOLINARI TOSATTI, Lorenzo , PARAZZOLI, Diego
CPC分类号： B23K26/12 , B23K26/032 , B23K26/0622 , B23K26/123 , B23K26/1476 , B23K26/38 , B23K2201/18 , B23K2203/04
摘要： Laser cutting processes are provided which are controlled using as a reference signal one or more emission lines which are characteristic of the radiation emitted by a gas or, more generally, by an emitting element present in the volume irradiated by the laser beam focussed by a laser head and adjusting, on the basis of this reference signal, at least one of the following process control parameters: the power of the laser, the frequency and the duty cycle of the laser pulse, the pressure of an assisting gas emitted by a nozzle forming part of the laser head, the relative speed of the laser head with respect to the workpiece, the distance between the laser head and the surface of the workpiece, and the distance between the focal point of the laser beam and the surface of the workpiece. Laser cutting devices are also provided.
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7.发明授权METHOD FOR CONTROLLING A LASER CUTTING PROCESS AND LASER CUTTING SYSTEM IMPLEMENTING THE SAME 有权方法Steurung激光切割工艺以及相关的激光切割装置
公开(公告)号：EP2699380B1
公开(公告)日：2016-07-27
申请号：EP12722866.6
申请日：2012-04-20
申请人： Adige S.p.A.
发明人： SBETTI, Maurizio , BERTOLDI, Stefano , COLOMBO, Daniele , PREVITALI, Barbara , RIVA, Giovanni , DANESI, Matteo , MOLINARI TOSATTI, Lorenzo , PARAZZOLI, Diego
CPC分类号： B23K26/12 , B23K26/032 , B23K26/0622 , B23K26/123 , B23K26/1476 , B23K26/38 , B23K2201/18 , B23K2203/04
摘要： Laser cutting processes are provided which are controlled using as a reference signal one or more emission lines which are characteristic of the radiation emitted by a gas or, more generally, by an emitting element present in the volume irradiated by the laser beam focussed by a laser head and adjusting, on the basis of this reference signal, at least one of the following process control parameters: the power of the laser, the frequency and the duty cycle of the laser pulse, the pressure of an assisting gas emitted by a nozzle forming part of the laser head, the relative speed of the laser head with respect to the workpiece, the distance between the laser head and the surface of the workpiece, and the distance between the focal point of the laser beam and the surface of the workpiece. Laser cutting devices are also provided.
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