WO2000002699A1 - Welding head - Google Patents
Welding head Download PDFInfo
- Publication number
- WO2000002699A1 WO2000002699A1 PCT/US1999/015148 US9915148W WO0002699A1 WO 2000002699 A1 WO2000002699 A1 WO 2000002699A1 US 9915148 W US9915148 W US 9915148W WO 0002699 A1 WO0002699 A1 WO 0002699A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- probe
- welding
- force
- workpiece
- actuator
- Prior art date
Links
Classifications
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/126—Workpiece support, i.e. backing or clamping
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/123—Controlling or monitoring the welding process
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/125—Rotary tool drive mechanism
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1265—Non-butt welded joints, e.g. overlap-joints, T-joints or spot welds
Definitions
- the present invention relates to a welding head.
- the present invention relates to a welding head for friction stir welding applications.
- Friction stir welding is a process of welding component parts together using friction heat generated at a welding joint to form a plasticized region which solidifies joining workpiece sections.
- a welding head is used to generate friction heat along a welding joint.
- the welding head includes a welding probe which is inserted into a joint between workpiece sections.
- the probe includes a pin that is inserted into the joint and a shoulder which is urged against an upper surface of the workpiece. The pin and shoulder spin to generate friction heat to form a plasticize region along the joint for welding operation.
- a workpiece is supported by a rigid table or backplate typically formed of a steel plate.
- Rigid backplate stabilizes the actuation force of the upper shoulder to maintain the integrity of the workpiece so that the workpiece does not bend or deform under the load.
- the welded portion should extend the entire thickness of the workpiece. To assure that the weld extends the entire thickness, sufficient friction heat must be generated between upper and lower surfaces of the workpiece so that the plasticized region extends between upper and lower surfaces of the workpiece .
- the thickness of a workpiece can vary along the joint. Variations in the workpiece thickness can vary pin depth or extension into the workpiece joint. If pin depth does not extend sufficient thickness, the plasticized region does not extend the entire thickness of the workpiece causing stress notches in the joint. For a smaller thickness, pin can extend too close to the backplate so that workpiece becomes joined to the backplate as a result of the welding operation.
- the present invention relates to a welding head with adjustable probe or pin depth to compensate for variations in workpiece thickness .
- the welding probe includes an upper probe member and a lower member and a pin movably supported relative to the upper probe member.
- Upper and lower probe members are coupled to separate forge actuators and are urged against upper and lower surfaces of the workpiece .
- the pin and upper and lower probe members rotate to generate friction heat at the weld joint.
- the forging force of the upper and lower probe members generates friction heat at the upper and lower surfaces of the workpiece to provide sufficient friction heat through the thickness of the workpiece.
- the forging force on the upper and lower actuators is balanced to maintain the integrity of the workpiece and limit bending and distortion.
- the biased upper and lower probe members follow workpiece profile so that pin depth is adjusted based upon thickness of the workpiece at the joint.
- FIG. 1 is a schematic illustration of an embodiment of a welding head of the present invention.
- FIG. 2A is an illustration of a plasticized region for a prior art probe including an upper shoulder and fixed pin.
- FIG. 2B is an illustration of a plasticized region for a probe including upper and lower probe members .
- FIG. 3 is a schematic control feedback for forging force Fg x on upper probe member and forging force Fg 2 on lower probe member.
- FIG. 4 is a cross sectional illustration of a welding head of the present invention.
- FIG. 5 is a perspective illustration of a fixture supporting a welding head of the present invention.
- FIG. 6 is a schematic illustration for force feedback Fg x and Fg 2 of upper and lower probe members .
- FIG. 7 is a schematic illustration of force and position control feedback for upper and lower probe members .
- FIG. 8 is a detailed illustration of an operation control embodiment for upper and lower probe members .
- FIG. 9 is a schematic illustration of a flexible mounting assembly for a welding head to follow the contour of shaped forms or components.
- FIG. 10 is a perspective illustration of a flexible mounting fixture supporting a welding head. DETAILED DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENTS
- FIG. 1 schematically illustrates an embodiment of a welding probe 50 for friction welding application.
- Welding probe 50 welds workpiece sections 52, 54 at joint 56.
- Welding probe 50 is connected to a spindle drive 58 to rotate probe 50 for welding operation.
- welding probe 50 includes an upper probe member 60, a lower probe member 62 and a probe pin 64.
- lower probe member 62 is rigidly connected to probe pin 64 and is movable therewith.
- Lower probe member 62 and probe pin 64 are slideably supported as illustrated by arrow 66 relative to upper probe member 60 for adjusting pin 64 extension relative to upper probe member 60 for use for workpieces of various thickness and for compensating for thickness variations in a workpiece as will be explained.
- upper probe member 60 includes an upper shoulder 72 and lower probe member 62 includes a lower shoulder 74.
- upper probe member 60 is supported so that shoulder 72 abuts an upper surface
- Pin 64 extends through joint 56 and shoulder 74 of lower probe member 62 abuts a lower surface 78 of the workpiece sections 52, 54.
- An upper forge actuator 80 is coupled to the upper probe member 60 and a lower forge actuator 82 is coupled to the lower probe member 62 and pin 64.
- probe 50 rotates and upper and lower forge actuators 80, 82 supply forging forces Fg 1# Fg 2 to upper and lower probe members 60, 62 as illustrated by arrows Fg ⁇ ; Fg 2 respectively.
- FIG. 2A a profile of plasticize region 92 formed by a prior art probe tapers from a thicker region 94 at an upper surface 76 of the workpiece to a thin region 96 proximate to a lower surface 78 of the workpiece. Stress notches or root openings form if the weld does not extend the entire thickness of the workpiece . In contrast, as illustrated in FIG.
- upper and lower probe members 60, 60 form a plasticized region 98 that includes thicker regions 100, 102 at the upper and lower surfaces 76, 78 and a taper center region 104.
- Fg ⁇
- Upper and lower forge actuators 80, 82 and spindle drive 58 are coupled to controller 106 as schematically illustrated in FIG. 1 for operation.
- Controller operates upper and lower forge actuators 80, 82 to maintain upper and lower probe members 60, 62 or shoulders 72 , 74 in abutment with upper and lower surfaces of the workpiece to compensate for variations in workpiece thickness and profile and to provide a balanced load on opposed surfaces of the workpiece.
- Controller 106 can be a digital controller or an analog controller set to supply a balanced forging force for upper and lower actuators.
- a digital controller 106 includes a processor and memory for storing programmed instructions .
- controller operates lower forge actuator 82 to maintain appropriate spacing between upper and lower probe members 60, 62 to adjust pin 64 depth relative to workpiece thickness and variations in workpiece thickness.
- FIG. 3 illustrates a simplified embodiment for controlling operation of upper and lower forge actuators 80, 82.
- controller 106 uses an input or command forging force 108, which is used to control upper and lower actuators 80, 82.
- Controller 106 includes upper and lower process control 110, 112 which provides operating control to upper and lower forge actuators 80, 82 as illustrated by lines 114, 116 based upon input parameters 108, 109 and control feedback 118, 120.
- feedback 118, 120 includes force feedback as will be explained to maintain a balanced load to the workpiece to limit deformation or bending of the workpiece. Control of the upper and lower probe members 60, 62 biases members 60, 62 against the workpiece to maintain proper pin 64 depth based upon workpiece thickness and variations in workpiece thickness.
- welding probe provides a plasticized profile having thicker regions relative to upper and lower surfaces 76, 78 of the workpiece to provide a relatively rigid weld joint across the thickness of the workpiece joint, while rigidly supporting the workpiece to limit bending and distortion.
- FIG. 4 is a detailed cross-sectional view of an embodiment of a welding probe 50 ' including actuatable upper and lower probe members 60, 62.
- probe 50 includes an outer housing 122 and an inner housing 124 rotationally connected to outer housing by bearings 125.
- Upper probe member 60 is formed by inner housing 124.
- Pin 64 is slidably supported in housing 124 via rod 126.
- Probe member 62 is connected to pin 64 to slidably support lower shoulder 74 relative to upper shoulder 72 formed by housing 124.
- Spindle shaft 128 is coupled to housing 124 to rotate housing 124 (upper probe member 60, lower probe member 62 and pin 64) by operation of spindle drive 58 for welding operation.
- spindle drive 58 includes an inline torque transducer for spindle control.
- Spindle control includes simultaneous torque and RPM (revolutions per minute) control.
- upper forge actuator 80 is connected to outer housing 122 to position and actuator upper probe member 60 as will be explained.
- lower forge actuator 82 is a fluid actuator supported in inner housing 124 and coupled to rod 126 connected to lower probe member 62 and pin 64.
- Fluid actuator includes an actuation chamber 130 and piston 132.
- Rod 126 is connected to piston 132 operable in chamber 130.
- Actuator fluid is delivered to chamber 130 from fluid source 134 for bi-directional movement as illustrated by arrow 136.
- Fluid is delivered from fluid source 134 to rotating housing 124 by fluid commutator or slip rings 138.
- Fluid is delivered through channels 140, 142 for bi-directional actuation as illustrated by arrow 136.
- fluid source 134 is a hydraulic fluid although other fluids can be used.
- cooling fluid is supplied from a cooling fluid source 144 to channels 146 in the probe through fluid commutator 138 for temperature control during welding operation.
- Housing 122 includes upper and lower portions separated by a sealing ring 148 for operating fluid containment.
- a displacement sensor 150 for example, a linear voltage displacement transducer "LVDT" is coupled to rod 126 for position feedback control for pin 64 extension and separation distance between upper and lower probe members 60, 62 as will be explained.
- probe housing 122 is supported for movement along a probe track 152 supported by a welding fixture 154.
- Fixture includes a base 156, and posts 160, 162 which extend from base 156 to support probe track 150 above a workpiece table or backplate 164.
- Probe track 152 is movably coupled to tracks 166, 168 along posts 160, 162 to raise and lower probe 50 as illustrated by arrow 170 for welding operation.
- Table 164 includes a groove 172 or alternately two separately spaced table sections can be used to support the workpiece. Workpiece joint is aligned with groove 172 or separation for placement of the lower probe member 62 underneath the workpiece supported by table 164.
- probe track 152 supports probe 50 for movement along a welding joint of a workpiece supported by table 164 as illustrated by arrow 174.
- Fluid actuators 176, 178 are coupled to probe track 152 to raise and lower track 152 and probe 50 as illustrated by arrow 170.
- Actuators 176, 178 position probe 50 relative to workpiece and supply forging force to upper probe member 60 through housing 122.
- table 164 can be movably supported relative to base 180 as illustrated by arrows 180 for probe placement along a welding joint. Bi-directional placement of the probe as illustrated by arrows 180 facilitates complex welding operation along a curved joint in addition to straight line welding along a straight joint. Operation of the actuators 176, 178 can be independently controlled to vary rake angle 184 of the probe for contour welding operations, as will be explained.
- force feedback 118 for upper probe member 60 is measured by force transducer 188 connected in series with force actuator 80 (fluid actuators 176, 178) and upper probe member 60.
- Force feedback 120 for lower probe member 62 is measured by a pressure sensor assembly for measuring pressure differential between chamber portions 190, 192 of fluid actuator 82.
- FIG. 7 illustrates a control schematic for force and position control.
- upper and lower process control 110, 112 receive and process force 108, 109 and position 194, 196 input or command and force 118, 120 and position feedback 198, 200.
- Upper and lower process control 110, 112 includes mode switching for switching between force and position control. Mode switching includes a mode controller 202 or operating actuator 80, 82 between force and position control to maintain force and position parameter within command parameters or limits .
- Mode controller 202 switches mode control between force and position control based upon the force and position error between the program commands 108, 109, 194, 196 and feedback 118, 120, 198, 200. For example in FIG. 7, mode controller 202 provides force control to maintain force feedback relative to command parameters and switches to position if force feedback 118, 120 is within command parameters 108, 109 and provides position control to maintain position feedback within command parameter and switches to force control when position feedback 198, 200 is within command parameters.
- a proportional integrated controller (DID) provides force and position control and bumpless mode switching between force and position control.
- position feedback 198 can be used to maintain minimum separation ⁇ z between upper and lower probe members 60, 62 based upon workpiece thickness ⁇ t .
- ⁇ z can be controlled based upon preprogrammed command parameters based upon the profile of the workpiece.
- upper and lower ' process control 110, 112 adjust the position of upper and lower probe members 60, 62 to adjust ⁇ z (separation between upper and lower probe members 60, 62) to correspond to workpiece thickness or minimum separation command parameter.
- the position of lower probe is fixed relative to a workpiece supported by table 164.
- actuator 82 adjusts the position of upper probe member 62 for ⁇ z, and the position of the probe member 60 is also adjusted the same increment as lower probe member 62 by actuator 80 to compensate for the adjustment of lower probe member 62 to maintain the elevation of lower probe member 62 aligned with table 164.
- Position feedback can be used to compensate for profile or dimension changes in the workpiece based upon position commands.
- upper and lower probe members 60, 62 can be adjusted relative to workpiece profile data 204.
- Workpiece profile data ⁇ z can be used to compensate for profile or dimension changes in the workpiece based upon position commands.
- upper and lower probe members 60, 62 can be adjusted relative to workpiece profile data 204.
- Workpiece profile data ⁇ z can be used to compensate for profile or dimension changes in the workpiece based upon position commands.
- 204 can be measured or downloaded off-line or during the welding process by various sensors such as optical sensors to provide position commands 194 for operation.
- the thickness of the workpiece may fluctuate or the thickness may increase ⁇ t .
- lower process control lower process control
- 112 operates forge actuator 82 based upon position commands for the workpiece profile so that the separation distance of upper and lower probe members 60,
- ⁇ z - is the separation distance between upper and lower probe members 60, 62 t - is the original workpiece thickness; and ⁇ t - is the thickness change in the workpiece .
- FIG. 7 and position commands can be used by controllers for placement of upper and lower probe members in abutment with upper and lower workpiece surfaces 76, 78.
- z u , z ⁇ and ⁇ z can be used for placement of upper and lower probe members 60, 62 based upon position feedback z u , ⁇ z and position commands for z u , ⁇ z
- ⁇ z - is the displacement measurement of sensor 150 corresponding to separation of upper and lower probe members 60, 62
- z u - is the position of upper probe member measured relative to elevation of housing 122 based upon measurement by position sensor 206 shown in FIG. 6
- Position commands for z u , z 1# and ⁇ z can be derived from workpiece image or profile data which is uploaded to controller memory for execution or can be derived during the welding process via various sensors such as laser or optical sensors. As shown in FIGS. 9-
- head is flexibly supported to flexibly couple the head (upper and lower probe members) to follow the contour of the workpiece for adapting head
- head 50 for welding complex shapes and forms.
- head 50 is flexibly supported to pitch and roll relative to an x axis by first and second frame members 210, 212 for sloped or contour welding of surface 208.
- Head 50 is pivotally connected first frame member at trunions 214 to roll relative to the x-axis as illustrated by arrow 216.
- Frame member 210 is pivotally connected to frame member 212 to support the head 50 to pitch as illustrated by arrow 218. As shown in FIG.
- pitch and roll actuators 220, 222 adjust the position of the head 50 so that the surface of the head 50 (for example, upper and lower shoulders 72, 74) are normal to the surface of the workpiece for contour welding via operation by controller 106 based upon programmed data or profile measurements received during the welding operation via optical or laser sensors.
- probe members have been described relative to an upper and lower orientation, it should be understood, that probe members are not restricted to an upper and lower orientation and the upper and lower probe members can be oriented in any opposed relation.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT99933684T ATE507025T1 (en) | 1998-07-09 | 1999-07-08 | WELDING HEAD |
EP99933684A EP1105246B1 (en) | 1998-07-09 | 1999-07-08 | Welding head |
DE69943391T DE69943391D1 (en) | 1998-07-09 | 1999-07-08 | WELDING HEAD |
CA2336828A CA2336828C (en) | 1998-07-09 | 1999-07-08 | Welding head |
DK99933684.5T DK1105246T3 (en) | 1998-07-09 | 1999-07-08 | Welding head |
PT99933684T PT1105246E (en) | 1998-07-09 | 1999-07-08 | Welding head |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US9233298P | 1998-07-09 | 1998-07-09 | |
US60/092,332 | 1998-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000002699A1 true WO2000002699A1 (en) | 2000-01-20 |
Family
ID=22232725
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/015587 WO2000002704A1 (en) | 1998-07-09 | 1999-07-08 | Control system for friction stir welding |
PCT/US1999/015148 WO2000002699A1 (en) | 1998-07-09 | 1999-07-08 | Welding head |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/015587 WO2000002704A1 (en) | 1998-07-09 | 1999-07-08 | Control system for friction stir welding |
Country Status (9)
Country | Link |
---|---|
US (1) | US6199745B1 (en) |
EP (1) | EP1105246B1 (en) |
AT (1) | ATE507025T1 (en) |
CA (1) | CA2336828C (en) |
DE (1) | DE69943391D1 (en) |
DK (1) | DK1105246T3 (en) |
ES (1) | ES2364950T3 (en) |
PT (1) | PT1105246E (en) |
WO (2) | WO2000002704A1 (en) |
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US6264088B1 (en) * | 1997-05-16 | 2001-07-24 | Esab Ab | Welding assembly for friction stir welding |
WO2003064100A1 (en) * | 2002-02-01 | 2003-08-07 | Esab Ab | Welding head, welding system, method and computer program for friction stir welding |
WO2003092951A1 (en) | 2002-04-29 | 2003-11-13 | The Boeing Company | Method and apparatus for friction stir welding |
US6648206B2 (en) | 2000-05-08 | 2003-11-18 | Tracey W. Nelson | Friction stir welding using a superabrasive tool |
US6676004B1 (en) | 2001-02-13 | 2004-01-13 | Edison Welding Institute, Inc. | Tool for friction stir welding |
EP1607166A1 (en) * | 2004-06-15 | 2005-12-21 | Gkss-Forschungszentrum Geesthacht Gmbh | Device for joining workpieces using the friction stir welding method |
DE102005032170A1 (en) * | 2005-07-09 | 2007-01-11 | Technische Universität Ilmenau | Friction friction welding tool and method and arrangement for online control of a friction stir welding process |
US7225968B2 (en) | 2003-08-04 | 2007-06-05 | Sii Megadiamond, Inc. | Crack repair using friction stir welding on materials including metal matrix composites, ferrous alloys, non-ferrous alloys, and superalloys |
US7270257B2 (en) | 2003-01-30 | 2007-09-18 | Sii Megadiamond, Inc. | Out-of-position friction stir welding of high melting temperature alloys |
US7530486B2 (en) | 2003-05-05 | 2009-05-12 | Sii Megadiamond, Inc. | Applications of friction stir welding using a superabrasive tool |
US7608296B2 (en) | 2001-06-12 | 2009-10-27 | Brigham Young University | Anvil for friction stir welding high temperature materials |
US7651018B2 (en) | 2004-10-05 | 2010-01-26 | Sii Megadiamond | Expandable mandrel for use in friction stir welding |
DE102009040526A1 (en) | 2009-09-08 | 2011-03-10 | Eads Deutschland Gmbh | Process for producing a component from two workpieces, comprises positioning the workpieces to each other, positioning the tool to the workpieces and controlling the tool, where the tool is subjected with additional force |
US8056797B2 (en) | 2005-10-05 | 2011-11-15 | Megastir Technologies | Expandable mandrel for use in friction stir welding |
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US6460752B1 (en) * | 2000-04-04 | 2002-10-08 | The Boeing Company | Method of friction stir welding with grooved backing member |
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JP4050478B2 (en) | 2001-03-29 | 2008-02-20 | マツダ株式会社 | Processing control method using friction stirring, computer program for executing the method, and storage medium storing the computer program |
US7210610B2 (en) * | 2001-06-04 | 2007-05-01 | Brigham Young University | Apparatus and method for performing non-linear friction stir welds on either planar or non-planar surfaces |
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US6543671B2 (en) | 2001-09-05 | 2003-04-08 | Lockheed Martin Corporation | Apparatus and method for friction stir welding using filler material |
US6708866B2 (en) | 2001-09-26 | 2004-03-23 | Nova-Tech Engineering, Inc. | Method and apparatus for machine tooling, such as friction stir welder |
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WO2003045615A2 (en) * | 2001-11-27 | 2003-06-05 | THE UNITED STATES OF AMERICA as represented by the ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE | Thermal stir welding process and apparatus |
US6688512B2 (en) * | 2001-12-20 | 2004-02-10 | United Technologies Corporation | Apparatus and method for friction welding |
US6732900B2 (en) | 2002-04-02 | 2004-05-11 | Mts Systems Corporation | Friction stir welding spindle with axially displaceable spindle shaft |
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US9242308B2 (en) | 2009-11-02 | 2016-01-26 | Megastir Technologies Llc | Out of position friction stir welding of casing and small diameter tubing or pipe |
WO2012007573A1 (en) | 2010-07-16 | 2012-01-19 | Airbus Operations Gmbh | Method and device for friction stir welding |
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Also Published As
Publication number | Publication date |
---|---|
ES2364950T3 (en) | 2011-09-19 |
WO2000002704A1 (en) | 2000-01-20 |
DK1105246T3 (en) | 2011-08-01 |
PT1105246E (en) | 2011-07-20 |
ATE507025T1 (en) | 2011-05-15 |
US6199745B1 (en) | 2001-03-13 |
CA2336828C (en) | 2010-03-16 |
EP1105246A4 (en) | 2007-05-02 |
DE69943391D1 (en) | 2011-06-09 |
CA2336828A1 (en) | 2000-01-20 |
EP1105246B1 (en) | 2011-04-27 |
EP1105246A1 (en) | 2001-06-13 |
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