US20040238507A1 - Multi-head lasers cutting/welding cell with vibration control - Google Patents
Multi-head lasers cutting/welding cell with vibration control Download PDFInfo
- Publication number
- US20040238507A1 US20040238507A1 US10/446,818 US44681803A US2004238507A1 US 20040238507 A1 US20040238507 A1 US 20040238507A1 US 44681803 A US44681803 A US 44681803A US 2004238507 A1 US2004238507 A1 US 2004238507A1
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- United States
- Prior art keywords
- laser
- heads
- support structures
- cutting
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/10—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam
Definitions
- the present invention relates generally to a new automated laser cutting/welding system configured to produce, for example, an improved welded or cut work piece, such as an automotive body panel, side rail or structure, and a system and method for the manufacture thereof that includes an improved laser cutter/welder.
- Laser cutting machines of the type to, which the present invention is directed are well known in the art.
- they comprise an elongated main frame having upstanding front or operator-side and rear or beam-side portions in substantially parallel spaced relationship with a cutting zone and a loading/unloading zone located therebetween.
- the parallel, upstanding, main frame portions are generally described as extending in the directions of the X-axis, while the Y-axis extends transversely of these main frame portions and the Z-axis is vertically oriented.
- the machine is provided with a gantry, the ends of which are mounted on the upstanding frame members for movement therealong in the X-axis directions.
- the gantry carries a carriage-mounted laser cutting head capable of traversing along the gantry in the Y-axis direction. Movement of the gantry in the X-axis directions and movement of the laser head carriage in the Y-axis directions assure that the laser cutting head can be located anywhere in the cutting zone of the machine.
- CO 2 /Yag laser cutting cells available today primarily comprises one cutting head; although, some system utilize two cutting heads mounted to a single structure. When two heads are mounted on a single structure, vibrational problems arise because the starting and stopping moments from one cutting head create vibrations in the other cutting head. This vibration creates swiggles or irregularities in the cuts created by the vibrating cutting head.
- This invention provides multiple cutting heads in a single cutting cell whereby vibrations created in one cutting head is isolated from the other cutting head(s).
- the invention is a laser cutting cell having more than one cutting head in the cell, whereby each cutting head is supported by separate support structures to prevent the transfer of vibration from one cutting head to another.
- the multi-head laser cell includes a series of support structures that are staggered/stacked with respect to each other so that the lasers are isolated from each other.
- the x-direction rails and laser guides are mounted in staggered heights.
- each laser cutting head has a pre-programmed dynamic operating zone to prevent collisions with other cutting heads.
- the laser cutting heads preferably have multi-axes motion control; e.g., five axis motion control.
- FIG. 1 is a schematic perspective view showing multi-head laser cell including a series of one-sided support structures that are staggered with respect to each other.
- FIG. 2 is a schematic perspective view showing an alternate multi-head laser cell including a series of two-sided support structures that are staggered with respect to each other.
- This invention is a stacked, staggered series of gantry supports, having a laser and laser delivery system mounted to corresponding numerically controlled carriages.
- the gantry and carriage assemblies are of such construction and strength to support a high powered laser typically used in the automotive industry.
- the gantry is provided with means to rapidly transport the laser and laser delivery system, about the gantry, allowing the laser delivery system to provide a laser beam to any x, y, z coordinate within the workcell of the gantry.
- the gantry may have a numerical control console that directs the movement of the carriage and laser delivery system, such that the gantry can perform preprogrammed manufacturing methods on various workpieces.
- FIG. 1 shows a series (i.e., three shown in FIG. 1) of numerically controlled gantry assemblies having X, Y and Z coordinates as indicated.
- the gantry assemblies are supported on a single side as described below and the assemblies can be controlled by a conventional numerically controlled system as known by those of skill in the art.
- the gantry assemblies each have an x-beam 10 a , 10 b , 10 c attached to a respective end beam 12 a , 12 b , 12 c which are respectively supported by a plurality of support posts 14 a , 14 b , 14 c that elevate the end beams 12 a , 12 b , 12 c and x-beams 10 a , 10 b , 10 c above a workcell 20 .
- the support posts 14 a , 14 b , 14 c , x-beams 10 a , 10 b , 10 c and end beams 12 a , 12 b , 12 c are made from a high strength material of sufficient dimension to provide a rigid structure.
- Y-frames 16 a , 16 b , 16 c Resting essentially perpendicular to the X-beams 10 a , 10 b , 10 c are respective Y-frames 16 a , 16 b , 16 c .
- the Y-frames 16 a , 16 b , 16 c have respective X-drive mechanisms (not shown) that independently move the Y-frames 16 a , 16 b , 16 c along the X-axis of the gantry assemblies.
- the X-axis drive mechanisms may be a rack and pinion drive as shown in FIG.
- the X-axis drive mechanisms and associated control provides accurate location of the Y-frames 16 a , 16 b , 16 c as they independently move along the X-axis of the gantry assemblies.
- the multi-head laser cell includes a series of two-sided support structures that are staggered with respect to each other, whereby the X-axis drive mechanisms may be a track drive system as shown in FIG. 2, where electric motors drive a rolling treads 40 along tracks 50 that are located along the x-beams 110 a , 110 b , 110 c or in any other manner know to those of skill in the art—taking into account the other aspects of the instant invention set forth herein.
- FIG. 2 shows a series (i.e., three shown in FIG. 1) of numerically controlled gantry assemblies having X, Y and Z coordinates as indicated.
- the gantry assemblies are supported on two opposite sides as described below and the assemblies can be controlled by a conventional numerically controlled system as known by those of skill in the art.
- the gantry assemblies each have x-beams 110 a , 110 b , 110 c attached to a respective end beam 112 a , 112 b , 112 c which are respectively supported by a plurality of support posts 114 a , 114 b , 114 c that elevate the end beams 112 a , 112 b , 112 c and x-beams 110 a , 110 b , 110 c above a workcell 120 .
- the support posts 114 a , 114 b , 114 c , x-beams 110 a , 110 b , 110 c and end beams 112 a , 112 b , 112 c are made from a high strength material of sufficient dimension to provide a rigid structure.
- Y-frames 116 a , 116 b , 116 c Resting essentially perpendicular to the X-beams 110 a , 110 b , 110 c are respective Y-frames 116 a , 116 b , 116 c .
- the Y-frames 116 a , 116 b , 116 c have respective X-drive mechanisms that independently move the Y-frames 116 a , 116 b , 116 c along the X-axis of the gantry assemblies.
- the X-axis drive mechanisms and associated control provides accurate location of the Y-frames 16 a , 16 b , 16 c as they independently move along the X-axis of the gantry assemblies.
- the X and Y drive mechanisms can be controlled by a conventional numerical control console (not shown) that provides input to the mechanism's electric motors in accordance with a computer program that is loaded into the console.
- a conventional numerical control console (not shown) that provides input to the mechanism's electric motors in accordance with a computer program that is loaded into the console.
- the combination of drive mechanisms and console allows the carriage to be located along any series of x, y coordinates in the gantry workcell 12 , 120 , in accordance with the instructions of the console program, as is well known in the art.
- the laser delivery system provides a laser beam 42 that is directed to a workpiece (not shown) disposed in the workcell 12 , 120 .
- the laser delivery system typically utilizes a telescoping tube assembly 35 , 135 that houses a mirror arrangement that delivers the laser beam 42 from a source to the area of the workcell 12 , 120 or a fiber optic cable.
- the laser delivery system is also connected to the carriage 30 .
- the laser head 40 may receive its laser beam from any type of laser, be it CO 2 , Nd:Yag, or the like.
- this invention provides multiple cutting heads in a single cutting cell whereby vibrations created in one cutting head is isolated from the other cutting head(s).
- the laser cutting cell has more than one cutting head in the cell, whereby each cutting head is supported by separate support structures to prevent the transfer of vibration from one cutting head to another.
- the multi-head laser cell includes a series of support structures that are staggered with respect to each other so that the lasers are isolated from each other.
- the x-direction rails and laser guides are mounted in staggered heights.
- each laser cutting head has a dynamic pre-programmed operating zone to prevent collisions with other cutting heads.
Abstract
Description
- 1. Field of the Invention
- The present invention relates generally to a new automated laser cutting/welding system configured to produce, for example, an improved welded or cut work piece, such as an automotive body panel, side rail or structure, and a system and method for the manufacture thereof that includes an improved laser cutter/welder.
- 2. Background of the Invention
- In the past, work pieces such as body panels or side rails for use in the automotive vehicle industry were made by stamping or drawing the panel from either a single blank of a ductile sheet metal material, including steel, or from a plurality of such blanks that were previously welded together.
- The automotive vehicle industry is very competitive with respect to, among other things, quality, raw material costs, and manufacturing times required to completely fabricate and assemble a vehicle. To remain competitive, manufacturers have continuously expended enormous resources to contain, if not reduce, material costs by reducing part weight, part count, and manufacturing time while maintaining the needed high degree of quality. A considerable amount of such resources have been directed to improving and automating routine tasks such as the fastening together of various work pieces and vehicle parts such as, for example, body panels for fenders, quarter panels, trunk lids, engine compartment hoods, vehicle doors, and other various components.
- Previously, multi-part sheet metal blanks have been welded together into a single work piece before being stamped into a final shape. These blanks were prepared by a variety of fastening techniques including chemical, arc, and CO2/Nd:Yag laser welding, riveting, bolting, cold forming, and similar methods. Of particular interest in recent years is the use of more efficient laser welding using CO2/Nd:Yag lasers in automated, numerically controlled manufacturing processes. Such laser welding can be accomplished for joining together sheet metal blanks at a common seam by means of, for example, a lap weld, or a butt weld. Butt welds are often preferred because only a single seam needs to be welded in contrast to lap joint which usually require that two seams be welded.
- Laser cutting machines of the type to, which the present invention is directed are well known in the art. In their most usual form, they comprise an elongated main frame having upstanding front or operator-side and rear or beam-side portions in substantially parallel spaced relationship with a cutting zone and a loading/unloading zone located therebetween. The parallel, upstanding, main frame portions are generally described as extending in the directions of the X-axis, while the Y-axis extends transversely of these main frame portions and the Z-axis is vertically oriented. The machine is provided with a gantry, the ends of which are mounted on the upstanding frame members for movement therealong in the X-axis directions. The gantry carries a carriage-mounted laser cutting head capable of traversing along the gantry in the Y-axis direction. Movement of the gantry in the X-axis directions and movement of the laser head carriage in the Y-axis directions assure that the laser cutting head can be located anywhere in the cutting zone of the machine.
- CO2/Yag laser cutting cells available today primarily comprises one cutting head; although, some system utilize two cutting heads mounted to a single structure. When two heads are mounted on a single structure, vibrational problems arise because the starting and stopping moments from one cutting head create vibrations in the other cutting head. This vibration creates swiggles or irregularities in the cuts created by the vibrating cutting head.
- This invention provides multiple cutting heads in a single cutting cell whereby vibrations created in one cutting head is isolated from the other cutting head(s).
- The invention is a laser cutting cell having more than one cutting head in the cell, whereby each cutting head is supported by separate support structures to prevent the transfer of vibration from one cutting head to another. The multi-head laser cell includes a series of support structures that are staggered/stacked with respect to each other so that the lasers are isolated from each other. The x-direction rails and laser guides are mounted in staggered heights.
- In the preferred embodiment, each laser cutting head has a pre-programmed dynamic operating zone to prevent collisions with other cutting heads. Furthermore, the laser cutting heads preferably have multi-axes motion control; e.g., five axis motion control.
- These and other benefits of the present invention will become apparent with reference to the following drawings and associated written description.
- FIG. 1 is a schematic perspective view showing multi-head laser cell including a series of one-sided support structures that are staggered with respect to each other.
- FIG. 2 is a schematic perspective view showing an alternate multi-head laser cell including a series of two-sided support structures that are staggered with respect to each other.
- This invention is a stacked, staggered series of gantry supports, having a laser and laser delivery system mounted to corresponding numerically controlled carriages. The gantry and carriage assemblies are of such construction and strength to support a high powered laser typically used in the automotive industry. The gantry is provided with means to rapidly transport the laser and laser delivery system, about the gantry, allowing the laser delivery system to provide a laser beam to any x, y, z coordinate within the workcell of the gantry. The gantry may have a numerical control console that directs the movement of the carriage and laser delivery system, such that the gantry can perform preprogrammed manufacturing methods on various workpieces.
- Referring to the drawings more particularily by reference numbers, FIG. 1 shows a series (i.e., three shown in FIG. 1) of numerically controlled gantry assemblies having X, Y and Z coordinates as indicated. The gantry assemblies are supported on a single side as described below and the assemblies can be controlled by a conventional numerically controlled system as known by those of skill in the art. The gantry assemblies each have an
x-beam respective end beam support posts end beams x-beams workcell 20. Thesupport posts x-beams end beams - Resting essentially perpendicular to the
X-beams frames frames frames x-beams frames - In the alternate embodiment shown in FIG. 2, the multi-head laser cell includes a series of two-sided support structures that are staggered with respect to each other, whereby the X-axis drive mechanisms may be a track drive system as shown in FIG. 2, where electric motors drive a
rolling treads 40 alongtracks 50 that are located along thex-beams - FIG. 2 shows a series (i.e., three shown in FIG. 1) of numerically controlled gantry assemblies having X, Y and Z coordinates as indicated. The gantry assemblies are supported on two opposite sides as described below and the assemblies can be controlled by a conventional numerically controlled system as known by those of skill in the art. The gantry assemblies each have
x-beams respective end beam support posts end beams x-beams workcell 120. Thesupport posts x-beams end beams - Resting essentially perpendicular to the
X-beams frames frames frames frames - The X and Y drive mechanisms can be controlled by a conventional numerical control console (not shown) that provides input to the mechanism's electric motors in accordance with a computer program that is loaded into the console. The combination of drive mechanisms and console allows the carriage to be located along any series of x, y coordinates in the
gantry workcell 12, 120, in accordance with the instructions of the console program, as is well known in the art. - Mounted on the
carriage 30, 130 is alaser system 40. The laser delivery system provides alaser beam 42 that is directed to a workpiece (not shown) disposed in theworkcell 12, 120. The laser delivery system typically utilizes atelescoping tube assembly laser beam 42 from a source to the area of theworkcell 12, 120 or a fiber optic cable. The laser delivery system is also connected to thecarriage 30. Thelaser head 40 may receive its laser beam from any type of laser, be it CO2, Nd:Yag, or the like. - From the foregoing description, it will be apparent from those of skill in the art that this invention provides multiple cutting heads in a single cutting cell whereby vibrations created in one cutting head is isolated from the other cutting head(s). The laser cutting cell has more than one cutting head in the cell, whereby each cutting head is supported by separate support structures to prevent the transfer of vibration from one cutting head to another. The multi-head laser cell includes a series of support structures that are staggered with respect to each other so that the lasers are isolated from each other. The x-direction rails and laser guides are mounted in staggered heights. Moreover, in the preferred embodiment, each laser cutting head has a dynamic pre-programmed operating zone to prevent collisions with other cutting heads.
- While this invention has been shown and described with reference to a number of embodiments, it will be understood by those of skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of this invention.
Claims (11)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US10/446,818 US6825438B1 (en) | 2003-05-29 | 2003-05-29 | Multi-head lasers cutting/welding cell with vibration control |
DE102004026151A DE102004026151A1 (en) | 2003-05-29 | 2004-05-28 | Machining arrangement with multiple laser heads for cutting / welding and vibration control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US10/446,818 US6825438B1 (en) | 2003-05-29 | 2003-05-29 | Multi-head lasers cutting/welding cell with vibration control |
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US6825438B1 US6825438B1 (en) | 2004-11-30 |
US20040238507A1 true US20040238507A1 (en) | 2004-12-02 |
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US10/446,818 Expired - Fee Related US6825438B1 (en) | 2003-05-29 | 2003-05-29 | Multi-head lasers cutting/welding cell with vibration control |
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US20070175873A1 (en) * | 2004-07-29 | 2007-08-02 | Mitshbishi Heavy Industries Ltd., | Apparatus for improving residual stress of piping technical field |
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WO2010042829A1 (en) * | 2008-10-10 | 2010-04-15 | J.P. Sercel Associates Inc. | Laser machining systems and methods with moving laser scanning stage(s) providing force cancellation |
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DE102007023017B4 (en) * | 2007-05-15 | 2011-06-01 | Thyssenkrupp Lasertechnik Gmbh | Apparatus and method for producing tailored blanks |
US20100294746A1 (en) * | 2008-11-19 | 2010-11-25 | Applied Materials, Inc. | Laser scribing platform with moving gantry |
US10675706B2 (en) * | 2014-05-09 | 2020-06-09 | Guidolin Girotto S.R.L. | Cutting apparatus for cutting flexible material with a first cutting unit and a second cutting unit comprising at least one laser emitter |
US20170151626A1 (en) * | 2014-07-10 | 2017-06-01 | Esab Ab | Floating fixture for friction stir welding |
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DE102004026151A1 (en) | 2004-12-16 |
US6825438B1 (en) | 2004-11-30 |
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