Back to results
US 4,694,139 AGranted
Guidance device for a laser beam for three-dimensional machining of workpieces
AssigneeMesser Griesheim GmbH
InventorWalter Roder
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeMesser Griesheim GmbH
InventorWalter Roder
Estimating the term…
In a guidance device for a laser beam (17) repeatedly reflected at 45.degree. mirrors at least six controllable movement axes (X, Y, Z, 4, 5, 7) are provided, of which two movement axes (5,7) are horizontal swiveling axes (11, 14), whereby the one swiveling axis (14) is assigned to the laser head (15). It can be achieved not only with two-dimensional cuts but also with three-dimensional cuts by appropriate adjustment of the swiveling angles (.alpha.,.beta.) at the swiveling axes (11, 14) and by a sufficient distance between the two swiveling axes (11, 14), that the point of intersection (27) on the workpiece (26) is always located vertically under the Z-movement axis, whereby the movement programming of the device is simplified. By adjustment of equal swiveling angles (.alpha.,.beta.) simplified circular arc cuts can be performed by rotation around only one movement axis (4) at horizontal workpieces. By arrangement of up to four swiveling axes according to additional embodiment versions of the guidance device simplified arc cuts can be realized also in non-horizontal workpieces, whereby at the same time an extraordinary extensive adaptability of the device to all cutting situations occurring with three-dimensional workpieces is achieved.
Guidance device for a laser beam repeatedly reflected at 45.degree. mirrors for three-dimensional machining of workpieces, with five controlled axes of motion, of which a first and second axes of motion are the horizontal coordinate axes X and Y, a third and fourth axes of motion are realized coaxially in a rotatable telescopic installation which is variable in length and the fourth axis of motion is a horizontal swiveling axis, around which the laser head can be swiveled, whereby beginning with the third axis of motion a self-supporting design is provided, wherein the improvement comprises that an additional axis of motion (5) designed as a horizontal swiveling axis (11) is provided parallel to the laser head swiveling axis (14), the distance from the additional horizontal swiveling axis (11) to the laser head swiveling axis is larger than the length of the laser head (15), whereby the laser beam reflection at the additional swiveling axis (11) is provided in such a way that the central axes of the telescopic installation (3) and the laser head (15) are always located in a common vertical plane, and that the swiveling angles (.alpha., .beta.) at the additional swiveling axis (11) and the laser head swiveling axis (14) are adapted to each other in a programmable- and adjustable manner according to the position of the workpiece surface to be machined.
Guidance device for a laser beam repeatedly reflected at 45.degree. mirrors for three-dimensional machining of workpieces, with five controlled movement axes, of which the first and second movement axes are the horizontal ordinate axes X and Y, the third and fourth movement axes are coaxially realized in a rotatable vertical telescopic installation variable in length and the fifth movement axis is a horizontal swiveling axis, around which the laser head is swivelable, whereby starting with the third movement axis a self-supporting design is provided, characterized in that three additional movement axes (5, 7, 9) designed as horizontal swiveling axes (11, 12, 13) are provided parallel to the laser head swiveling axis (14), the distance between a first and a second said swiveling axis (11, 12) downstream of the telescopic installation (3) is larger than the sum of the distances between the second and a third swiveling axis (12,13) and between the third swiveling axis (13) and the laser head swiveling axis (14) increased by the length of the laser head (15), whereby the laser beam reflection at all swiveling axes (11 to 14) is provided in such a way that the central axes of the telescopic installation (3) and the laser head (15) are aligned with each other, if the swiveling angles at all swiveling axes have the value zero, and that between the second and third swiveling axis (12, 13) a second axis of rotation (8) controllable through 360.degree. is provided.
Guidance device for a laser beam repeatedly reflected at 45.degree. mirrors for three-dimensional workpiece machining, with five controlled movement axes, of which a first and second movement axes are the horizontal coordinate axes X and Y, a third and fourth movement axes are realized coaxially in a rotatably vertical telescopic installation variable in length and a fifth movement axis is a horizontal swiveling axis for the laser head, whereby starting with the third movement axis a self-supporting design is provided, characterized in that an additional movement axis (5) designed as horizontal swiveling axis (11) is provided parallel to the swiveling axis (12) of the laser head (15), that between the swiveling axis (12) of the laser head (15) and the laser head two additional horizontal laser beam reflection axes (13', 14') are provided parallel to the two swiveling axes (11, 12), of which the one is designed as a stationary axis and the other as a telescopic axis (9), that between the swiveling axis (12) of the laser head (15) and the neighboring laser beam reflection axis (13') a second axis of rotation (8) controlled through 360.degree. is provided, that the distance between the two swiveling axes (11, 12) is larger than the sum of the distances between the swiveling axis (12) of the laser head and the laser head beam reflection axis (14') adjacent to the laser head increased by the length of the laser head (15), and that the laser beam reflection at the swiveling axes (11, 12) and the two additional laser beam reflection axes (13', 14'), are provided in such a way that the central axes of the telescopic installation (3) and of the laser head (15) are aligned with each other, if the swiveling angle at the two swiveling axes has the value of zero and the telescopic axis has not been changed in length.
Guidance device for a repeatedly reflected laser beam at 45.degree. mirrors for three-dimensional workpiece machining, with a plurality of controlled movement axes, of which a first and second movement axes are the horizontal coordinate axes X and Y, a third and fourth movement axis are realized coaxially in a rotatable vertical telescopic installation variable in length or such like and the first movement axis is a horizontal swiveling axis, around which the laser heasd is swivelable, whereby starting with the third movement axis, a self-supporting design is provided, characterized in that a horizontal conduit tube (46) is fastened at the lower end of the telescopic installation (3), into which the laser beam is reflected at a 45.degree. mirror (47), that an additional movement axis (5) designed as a horizontal swiveling axis (11) is provided parallel to the laser head swiveling axis (12) at the end of the conduit tube (46), that between the laser head swiveling axis (12) at the laser head (15) two additional horizontal laser beam reflection axes (13, 14) parallel to the two swiveling axes (11, 12) are provided, which are one of both designed as horizontal swiveling axes (9, 10), and one is designed as a stationary axis and the other as a movement axis (57) variable in length, that between the laser beam swiveling axis (12) and the neighboring laser beam reflection axis (13) a second axis of rotation (8) controllable through 360.degree. is provided, and that the laser beam reflection at the swiveling axes (11, 12) and the two additional laser beam reflection axes (13, 14) is provided in such a way that the central axes of the telescopic installation (3) and the laser head (15) are always located in a common vertical plane, if said two additional laser beam reflection axes (13, 14) are not adjusted for cutting of circular arc-shaped penetrations.
Guidance device for a laser beam repeatedly reflected at 45.degree. mirrors for three-dimensional workpiece machining, with several controlled movement axes, of which a first and second movement axes are the horizontal coordinate axes X and Y, a third and fourth movement axes are realized coaxially in a rotatable vertical telescopic installation variable in length and a fifth movement axis is a horizontal swiveling axis, around which the laser head is swivelable, whereby starting with the third movement axis a self-supporting design is provided, characterized in that a second telescopic installation (49) controlled to be variable in length is attached at the lower end of the telescopic installation (3) with formation of an additional horizontal movement axis (48) into which the laser beam is reflected at a 45.degree. mirror (47) and at which a third telescopic installation (16) controlled to be variable in length is attached with formation of an additional vertical movement axis (50), into which the laser beam (17) is reflected at a 45.degree. mirror (51), that at the lower end of the third telescopic installation (16) a fixed laser beam reflection axis (52) parallel to the laser head swiveling axis (12) is provided, from which the laser beam is reflected to the laser head swiveling axis (12), that between the laser head swiveling axis (12) and the laser head (15) two additional horizontal laser beam reflection axes (13, 14) parallel to the laser head swiveling axis are provided, which are one of both designed as horizontal swiveling axes (9, 10), and one is designed as a stationary axis and the other as a movement axis (57) variable in length, that between the laser head swiveling axis (12) and the neighboring laser beam reflecting axis (13) a second axis of rotation (8) controllable through 360.degree. is provided, and that the laser beam reflection at the laser head swiveling axis (12) and the three laser beam reflection axes (52, 13, 14) are provided in such a way, that the central axes of the telescopic installation (3) and the laser head (15) are always located in a common vertical plane, if the two additional laser beam reflection axes (13, 14) are not adjusted for cutting of circular arc-shaped penetrations.
Guidance device for a laser beam repeatedly reflected at 45.degree. mirrors for three-dimensional workpiece machining, with a plurality of controlled movement axes, of which a first and a second movement axes are the horizontal coordinate axes X and Y, a third and a fourth movement axis are realized coaxially in a rotatable vertical telescopic installation variable in length of such like and a fifth movement axis is a horizontal swiveling axis, around which the laser head is swivelable, whereby beginning with the third movement axis a self-supporting design is provided, characterized in that at the lower end of the telescopic installation (3) a horizontal fixed laser beam reflection axis (53) is fastened arranged to be parallel to the laser head swiveling axis (12), by means of which the laser beam (17) is reflected to the laser head swiveling axis (12), that between the laser head swiveling axis (12) and the laser head (15) two additional horizontal laser beam reflection axes (13, 14) parallel to the laser head swiveling axis (12) are provided, which are one of both designed as horizontal swiveling axes (9, 10), and which one is designed as a stationary axis and the other as a movement axis (57) variable in length, that between the laser swiveling axis (12) and the neighboring laser beam reflection axis (13) a second axis of rotation (8) controllable through 360.degree. is provided, and that the laser beam reflection at the fixed laser beam reflection axis (53), the laser head swiveling axis (12) and the two additional laser beam reflection axes (13, 14) is provided in such a way that the central axes of the telescopic installation (3) and the laser head (15) are always located in a common vertical plane, if the two additional laser beam reflection axes (13, 14) are not adjusted for cutting of circular arc-shaped penetrations.
Dependencies are inferred from the claim text.