US20090235713A1 - Magnetically actuated roller head - Google Patents
Magnetically actuated roller head Download PDFInfo
- Publication number
- US20090235713A1 US20090235713A1 US12/406,224 US40622409A US2009235713A1 US 20090235713 A1 US20090235713 A1 US 20090235713A1 US 40622409 A US40622409 A US 40622409A US 2009235713 A1 US2009235713 A1 US 2009235713A1
- Authority
- US
- United States
- Prior art keywords
- roller
- head
- magnet
- slide
- rare earth
- 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.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
- B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
- B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
- B21D39/023—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors using rollers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53709—Overedge assembling means
- Y10T29/53787—Binding or covering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53996—Means to assemble or disassemble by deforming
Definitions
- This invention relates to robotic roller hemming, and more particularly a robotic roller head used for robotic roller hemming such as hemming of vehicle closure panels.
- the present invention provides a magnetically actuated roller hemming head that utilizes magnetic and/or electromagnetic force to actuate a roller hemming head and to provide a hemming force through a hem roller of the roller hemming head.
- the present invention may allow for variable force control on the roller head with instantaneous response time to roller head force changes.
- the present invention also may eliminate the need for some or all of the following: hydraulics, pneumatics, electric cylinders, gas spring charge, monitoring of air or gas pressure, and oil disposal.
- a magnetically actuated roller head in accordance with the present invention includes a linear actuator mountable on an end of a multi-axis robotic arm.
- the linear actuator includes a slide, a magnet operably connected to the slide and operable to urge the slide in a linear direction, and a connector disposed on a distal end of the slide.
- a roller hemming head is mounted on the linear actuator by the connector.
- the roller hemming head includes at least one hem roller.
- the magnet may be a rare earth magnet.
- the linear actuator may include a rare earth magnet disposed between two opposing magnets. The polarity of one of the opposing magnets may be disposed in the same direction as the polarity of the rare earth magnet, and the polarity of the other of the opposing magnets may be disposed in an opposite direction to the polarity of the rare earth magnet.
- the two opposing magnets may be rare earth magnets.
- the linear actuator may include an electromagnet disposed on each of opposite sides of the magnet. The electromagnets control and assist a force transmitted by the magnet.
- the slide may include an anti-rotate feature.
- a magnetically actuated roller head in another embodiment, includes a housing having an internal bore.
- the housing is mountable on an end of a multi-axis robotic arm.
- a pair of opposing actuator members are fixedly mounted within the inner bore.
- a shaft extends through the actuator members.
- a magnet is mounted on the shaft and is moveable within the inner bore. The magnet is disposed between the actuator members.
- a slide is connected to the shaft and extends outwardly from the housing.
- a connector is disposed on a distal end of the slide.
- a roller hemming head is mounted on the connector.
- the roller hemming head includes at least one hem roller. The actuator members control and assist a hemming force applied by the roller hemming head through the magnet.
- the magnet may be a rare earth magnet.
- the actuator members may be rare earth magnets.
- the polarity of one of the actuator members may be disposed in the same direction as the polarity of the rare earth magnet, and the polarity of the other of the actuator members may be disposed in an opposite direction to the polarity of the rare earth magnet.
- the actuator members may be electromagnets.
- the housing may include an anti-rotate linear guide
- the slide may include an anti-rotate feature cooperable with the linear guide.
- the anti-rotate feature may be one of a spline, a ball spline, and a square linear bearing.
- a method of roller hemming in accordance with the present invention includes mounting a linear actuator on an end of a multi-axis robotic arm, the linear actuator including a slide, a magnet operably connected to the slide and operable to urge the slide in a linear direction, and a connector disposed on a distal end of the slide; and mounting a roller hemming head on the linear actuator by the connector, the roller hemming head including at least one hem roller.
- the linear actuator provides a hemming force for performing roller hemming operations with the hem roller.
- the magnet may be a rare earth magnet.
- the method may also include disposing the magnet between a pair of opposing actuator members.
- the actuator members may be rare earth magnets.
- the actuator members may be electromagnets.
- the method may also include restricting axial rotation of the roller hemming head by providing a spline on the slide. Also, the method may include providing a plurality of different hem rollers on the roller hemming head.
- FIG. 1 is a sectional view of a magnetically actuated roller head in accordance with a first embodiment of the present invention
- FIG. 2 is a sectional view of a magnetically actuated roller head in accordance with a second embodiment of the present invention for push type roller hemming;
- FIG. 3 is a sectional view of a magnetically actuated roller head similar to the embodiment of FIG. 2 for pull type roller hemming;
- FIG. 4 is a sectional view of a magnetically actuated roller head in accordance with a third embodiment of the present invention for push type roller hemming.
- FIG. 5 is a sectional view of a magnetically actuated roller head similar to the embodiment of FIG. 4 for pull type roller hemming.
- numeral 110 generally indicates a magnetically actuated roller head in accordance with the present invention.
- the magnetically actuated roller head utilizes magnetic and/or electromagnetic force to actuate a roller hemming head and to provide a hemming force through a hem roller of the roller hemming head.
- the magnetically actuated roller head 110 includes a linear actuator 112 mountable on an end of a multi-axis robotic arm (not shown).
- a roller hemming head 114 is mounted on the linear actuator 112 .
- the linear actuator 112 provides a hemming force for performing roller hemming operations with the roller hemming head 114 .
- the linear actuator 112 includes a housing 116 that has an inner bore 118 that generally extends through the housing.
- An end cap 120 is mounted on an end of the housing 116 and closes an end of the inner bore 118 .
- the end cap 120 may include a feature such as a mounting surface for mounting the linear actuator 112 on a robotic arm.
- a pair of opposing actuator members 122 are fixedly mounted within the inner bore 118 .
- a shaft 124 extends through the actuator members 122 .
- a magnet 126 is mounted on the shaft 124 and is moveable within the inner bore 118 .
- the magnet 126 is disposed between the actuator members 122 .
- the actuator members 122 may be electromagnetic coils and the magnet 126 may be a polarized magnet having its north and south poles disposed in an axial direction relative to the shaft 124 .
- a pair of moveable yokes 128 made of a soft magnetic material sandwich the polarized magnet 126 .
- the polarized magnet 126 and yokes 128 are fixedly mounted on the shaft 124 and are disposed between and within the electromagnetic coils 122 .
- the magnetic field of the polarized magnet 126 forms a magnetic circuit that passes through the polarized magnet 126 , the moveable yokes 128 , and the electromagnetic coils 122 .
- An end 130 of the shaft 124 is supported by the end cap 120 .
- the end 130 may include a bushing engaged with a bushing hole 132 in an inner surface of the end cap 120 .
- An opposite end 134 of the shaft 124 is connected to a slide 136 .
- the slide 136 is slidable within an anti-rotate linear guide 138 .
- the linear guide 138 is mounted on an end of the housing 116 opposite the end cap 120 , and the slide 136 extends outwardly from the housing through the linear guide.
- the slide 136 includes an anti-rotate feature 140 such as a spline, a ball spline, a square linear bearing or similar that is cooperable with an inner surface 142 of the linear guide 138 .
- the cooperation of the anti-rotate feature 140 and the guide inner surface 142 allows the slide to move in a linear direction along its axis in and out of the housing 116 while preventing the slide from rotating about its axis.
- a distal end 144 of the slide 136 includes a connector 146 such as a quick release connector or similar.
- the roller hemming head 114 is connected to the slide 136 by the connector 146 .
- the connector 146 may include a through hole 148 in the slide distal end 144 , and the roller hemming head 114 may be secured to the slide 136 by a fastener 150 extending through the roller hemming head 114 and the through hole in the slide 136 , and a keeper 152 engaged with the fastener.
- the roller hemming head 114 includes at least one hem roller, and may include a plurality of different hem rollers 154 , 156 for performing different roller hemming operations.
- one of the rollers 154 may be utilized for push-type roller hemming operations while the other roller 156 may be utilized for pull-type roller hemming operations.
- one of the rollers 154 may be configured to fit into locations with small clearances, while the other roller 156 may be configured to hem locations having larger clearances.
- the rollers may be configured to perform different types of hems, such as flat hems and rope hems.
- the hem rollers 154 , 156 are mounted on the roller hemming head 114 via bearings to allow for smooth rotation of the rollers.
- the roller hemming head 114 is shown having two hem rollers, the roller hemming head may have one roller or more than two rollers.
- the coils When current is applied to the electromagnetic coils 122 , the coils are subjected to a force (in either a left or right direction as viewed in FIG. 1 ) that is dependent upon the direction of current flow and the resultant electromagnetic field.
- the electromagnetic coils 122 being fixed, do not move, and the electromagnetic field generated by the coils acts upon the moveable yokes 128 in an opposite direction, causing the moveable yokes 128 and attached shaft 124 to travel axially.
- the axial movement of the shaft 124 causes the slide 136 to move into or out of the housing 116 .
- Movement of the shaft 124 to the right causes the slide 136 to move outwardly relative to the housing 116 , while movement of the shaft 124 to the left causes the slide 136 to move inward. In turn, the movement of the slide 136 acts upon the connected roller hemming head 114 . Outward movement of the slide 136 provides a push force when the hem roller 154 is engaged with a panel to be hemmed. Likewise, inward movement of the slide 136 provides a pull force when hem roller 156 is engaged with a panel.
- the amount of push or pull force exerted by the hem rollers 154 , 156 can be adjusted by varying the amount of current applied to the electromagnetic coils 122 , which varies the amount of inward or outward force acting on the slide 136 . As the magnitude of the current is increased or decreased, the hemming force also increases or decreases.
- a magnetically actuated roller head 210 includes a linear actuator 212 and a roller hemming head 214 mounted on the linear actuator.
- Reference numbers similar to those of the first embodiment indicate similar features, and unless otherwise noted below, the second embodiment has features similar to the first embodiment.
- the linear actuator 212 includes a pair of opposing actuator members 258 fixedly mounted within the inner bore 218 of the housing 216 .
- Each actuator member 258 may be an electromagnet including a cylindrical bobbin 260 mounted in the inner bore 218 .
- a magnetic material 262 is disposed within the bobbin 260 , and a coil 264 is wound on the bobbin 260 .
- the shaft 224 extends through openings 266 in the bobbins 260 and is freely moveable therethrough.
- a rare earth magnet 268 is disposed between the opposing actuator members 258 and is fixed to the shaft 224 .
- the rare earth magnet 268 is a strong, permanent magnet made from alloys of rare earth elements (lanthanides).
- rare earth magnets include but are not limited to neodymium magnets and samarium-cobalt magnets.
- the rare earth magnet 268 is polarized and has its north and south poles disposed in an axial direction relative to the shaft 224 .
- the north pole of the rare earth magnet 268 points to the right towards the roller hemming head 214
- the south pole points to the left towards the end cap 220 of the housing 216 .
- the magnetically actuated roller hemming head 210 is arranged for push type roller hemming operations in which the hem roller 254 pushes against a panel to be hemmed. Due to the strength of the magnetic field of the rare earth magnet 268 , the linear actuator 212 applies approximately 330 pounds of force in a linear direction at steady state with no external power/force (zero current) applied to the actuator members 258 . The actuator members 258 control and assist the actuation force of the rare earth magnet 268 . More specifically, the linear force transmitted by the linear actuator 212 is adjustable in an increasing or decreasing manner by varying a current applied to the coils 264 .
- the polarity of the rare earth magnet 268 can be reversed, i.e. the rare earth magnet may be disposed such that the south pole of the rare earth magnet points to the right towards the roller hemming head 214 , and the north pole points to the left towards the end cap 220 of the housing 216 .
- the magnetically actuated roller hemming head 210 is arranged for pull type roller hemming operations in which the hem roller 256 is pulled toward a panel to be hemmed. At steady state, the amount of pull force is approximately 330 pounds, and the pull force can be varied from the steady state value by application of current to the coils 264 .
- a magnetically actuated roller head 310 includes a linear actuator 312 and a roller hemming head 314 mounted on the linear actuator.
- Reference numbers similar to those of the first embodiment indicate similar features, and unless otherwise noted below, the third embodiment has features similar to the first embodiment.
- the linear actuator 312 includes a pair of opposing actuator members 370 , 372 fixedly mounted within the inner bore 318 of the housing 316 .
- Each actuator member 370 , 372 may be a polarized rare earth magnet disposed in a non-magnetic cylindrical shell 374 that is mounted in the inner bore 318 .
- the shaft 324 extends through openings 376 in the shell 374 and is freely moveable therethrough.
- a rare earth magnet 368 is disposed between the opposing actuator members 370 , 372 and is fixed to the shaft 324 .
- a gap exist between the rare earth magnet 368 and the inner bore 318 of the housing 316 .
- the rare earth magnet 368 is polarized and has its north and south poles disposed in an axial direction relative to the shaft 324 .
- the north pole of the rare earth magnet 368 points to the right towards the roller hemming head 314 , and the south pole points to the left towards the end cap 320 of the housing 316 .
- the north pole of the actuator member 370 points to the left and the south pole points to the right, and the north pole of the actuator member 372 points to the right and the south pole points to the left. Therefore, the polarity of the actuator member 370 , rare earth magnet 368 , and actuator member 372 as viewed from left to right in FIG. 4 is north-south, south-north, south-north.
- the magnetically actuated roller hemming head 310 is arranged for push type roller hemming operations in which the hem roller 354 pushes against a panel to be hemmed.
- the interactions (attraction and repulsion) of the magnetic fields of the actuator members 370 , 372 and rare earth magnet 368 result in approximately 330 pounds of outward force being applied to the slide 336 and in turn the hem roller 354 .
- the distance between the actuator members 370 , 372 and the rare earth magnet 368 provides compliance for the hem roller 354 (i.e., allows the hem roller 354 to travel small distances to the left and right as viewed in FIG. 4 ).
- the opposing polarities of the rare earth magnet 368 and the actuator member 372 aid in maintaining a constant hemming force through a stroke of the hem roller 354 .
- the polarity of the rare earth magnet 368 can be reversed, i.e. the rare earth magnet may be disposed such that the south pole of the rare earth magnet points to the right towards the roller hemming head 314 , and the north pole points to the left towards the end cap 320 of the housing 316 . Therefore, the polarity of the actuator member 370 , rare earth magnet 368 , and actuator member 372 as viewed from left to right in FIG. 5 is north-south, north-south, south-north.
- the magnetically actuated roller hemming head 310 is arranged for pull type roller hemming operations in which the hem roller 356 is pulled toward a panel to be hemmed.
- the amount of pull force is approximately 330 pounds, and the opposing polarities of the rare earth magnet 368 and the actuator member 370 aid in maintaining a constant hemming force through a stroke of the hem roller 356 .
- the housing 316 and shaft 324 may be non-magnetic so as to not interfere or interact with the magnetic field of the rare earth magnets.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Manipulator (AREA)
Abstract
A magnetically actuated roller head includes a linear actuator mountable on an end of a multi-axis robotic arm. The linear actuator includes a slide, a magnet operably connected to the slide and operable to urge the slide in a linear direction, and a connector disposed on a distal end of the slide. A roller hemming head is mounted on the linear actuator by the connector. The roller hemming head includes at least one hem roller.
Description
- This application claims the priority of U.S. Provisional Application No. 61/070,551 filed Mar. 24, 2008.
- This invention relates to robotic roller hemming, and more particularly a robotic roller head used for robotic roller hemming such as hemming of vehicle closure panels.
- It is known in the art relating to actuation of a roller hemming head that conventional actuators typically require one or more of the following: hydraulics, pneumatics, electric cylinders, gas spring charge, monitoring of air or gas pressure, and oil disposal. These requirements may elevate the cost, size, and complexity of a conventional roller hemming head.
- The present invention provides a magnetically actuated roller hemming head that utilizes magnetic and/or electromagnetic force to actuate a roller hemming head and to provide a hemming force through a hem roller of the roller hemming head. The present invention may allow for variable force control on the roller head with instantaneous response time to roller head force changes. The present invention also may eliminate the need for some or all of the following: hydraulics, pneumatics, electric cylinders, gas spring charge, monitoring of air or gas pressure, and oil disposal.
- More particularly, a magnetically actuated roller head in accordance with the present invention includes a linear actuator mountable on an end of a multi-axis robotic arm. The linear actuator includes a slide, a magnet operably connected to the slide and operable to urge the slide in a linear direction, and a connector disposed on a distal end of the slide. A roller hemming head is mounted on the linear actuator by the connector. The roller hemming head includes at least one hem roller.
- Optionally, the magnet may be a rare earth magnet. Alternatively, the linear actuator may include a rare earth magnet disposed between two opposing magnets. The polarity of one of the opposing magnets may be disposed in the same direction as the polarity of the rare earth magnet, and the polarity of the other of the opposing magnets may be disposed in an opposite direction to the polarity of the rare earth magnet. Optionally, the two opposing magnets may be rare earth magnets. Alternatively, the linear actuator may include an electromagnet disposed on each of opposite sides of the magnet. The electromagnets control and assist a force transmitted by the magnet.
- Also, the slide may include an anti-rotate feature.
- In another embodiment, a magnetically actuated roller head includes a housing having an internal bore. The housing is mountable on an end of a multi-axis robotic arm. A pair of opposing actuator members are fixedly mounted within the inner bore. A shaft extends through the actuator members. A magnet is mounted on the shaft and is moveable within the inner bore. The magnet is disposed between the actuator members. A slide is connected to the shaft and extends outwardly from the housing. A connector is disposed on a distal end of the slide. A roller hemming head is mounted on the connector. The roller hemming head includes at least one hem roller. The actuator members control and assist a hemming force applied by the roller hemming head through the magnet.
- Optionally, the magnet may be a rare earth magnet. Also, the actuator members may be rare earth magnets. The polarity of one of the actuator members may be disposed in the same direction as the polarity of the rare earth magnet, and the polarity of the other of the actuator members may be disposed in an opposite direction to the polarity of the rare earth magnet. Alternatively, the actuator members may be electromagnets.
- The housing may include an anti-rotate linear guide, and the slide may include an anti-rotate feature cooperable with the linear guide. The anti-rotate feature may be one of a spline, a ball spline, and a square linear bearing.
- A method of roller hemming in accordance with the present invention includes mounting a linear actuator on an end of a multi-axis robotic arm, the linear actuator including a slide, a magnet operably connected to the slide and operable to urge the slide in a linear direction, and a connector disposed on a distal end of the slide; and mounting a roller hemming head on the linear actuator by the connector, the roller hemming head including at least one hem roller. The linear actuator provides a hemming force for performing roller hemming operations with the hem roller.
- Optionally, the magnet may be a rare earth magnet. The method may also include disposing the magnet between a pair of opposing actuator members. The actuator members may be rare earth magnets. Alternatively, the actuator members may be electromagnets.
- The method may also include restricting axial rotation of the roller hemming head by providing a spline on the slide. Also, the method may include providing a plurality of different hem rollers on the roller hemming head.
- These and other features and advantages of the invention will be more fully understood from the following detailed description of the invention taken together with the accompanying drawings.
- In the drawings:
-
FIG. 1 is a sectional view of a magnetically actuated roller head in accordance with a first embodiment of the present invention; -
FIG. 2 is a sectional view of a magnetically actuated roller head in accordance with a second embodiment of the present invention for push type roller hemming; -
FIG. 3 is a sectional view of a magnetically actuated roller head similar to the embodiment ofFIG. 2 for pull type roller hemming; -
FIG. 4 is a sectional view of a magnetically actuated roller head in accordance with a third embodiment of the present invention for push type roller hemming; and -
FIG. 5 is a sectional view of a magnetically actuated roller head similar to the embodiment ofFIG. 4 for pull type roller hemming. - Referring now to the drawings in detail,
numeral 110 generally indicates a magnetically actuated roller head in accordance with the present invention. The magnetically actuated roller head utilizes magnetic and/or electromagnetic force to actuate a roller hemming head and to provide a hemming force through a hem roller of the roller hemming head. - With reference to
FIG. 1 , in a first embodiment the magnetically actuatedroller head 110 includes alinear actuator 112 mountable on an end of a multi-axis robotic arm (not shown). Aroller hemming head 114 is mounted on thelinear actuator 112. Thelinear actuator 112 provides a hemming force for performing roller hemming operations with theroller hemming head 114. - The
linear actuator 112 includes ahousing 116 that has aninner bore 118 that generally extends through the housing. Anend cap 120 is mounted on an end of thehousing 116 and closes an end of theinner bore 118. Theend cap 120 may include a feature such as a mounting surface for mounting thelinear actuator 112 on a robotic arm. - A pair of
opposing actuator members 122 are fixedly mounted within theinner bore 118. Ashaft 124 extends through theactuator members 122. Amagnet 126 is mounted on theshaft 124 and is moveable within theinner bore 118. Themagnet 126 is disposed between theactuator members 122. More specifically, in the first embodiment theactuator members 122 may be electromagnetic coils and themagnet 126 may be a polarized magnet having its north and south poles disposed in an axial direction relative to theshaft 124. Further, a pair ofmoveable yokes 128 made of a soft magnetic material sandwich thepolarized magnet 126. Thepolarized magnet 126 andyokes 128 are fixedly mounted on theshaft 124 and are disposed between and within theelectromagnetic coils 122. The magnetic field of thepolarized magnet 126 forms a magnetic circuit that passes through thepolarized magnet 126, themoveable yokes 128, and theelectromagnetic coils 122. - An
end 130 of theshaft 124 is supported by theend cap 120. For example, theend 130 may include a bushing engaged with abushing hole 132 in an inner surface of theend cap 120. Anopposite end 134 of theshaft 124 is connected to aslide 136. Theslide 136 is slidable within an anti-rotatelinear guide 138. Thelinear guide 138 is mounted on an end of thehousing 116 opposite theend cap 120, and theslide 136 extends outwardly from the housing through the linear guide. Theslide 136 includes ananti-rotate feature 140 such as a spline, a ball spline, a square linear bearing or similar that is cooperable with aninner surface 142 of thelinear guide 138. The cooperation of theanti-rotate feature 140 and the guideinner surface 142 allows the slide to move in a linear direction along its axis in and out of thehousing 116 while preventing the slide from rotating about its axis. - A
distal end 144 of theslide 136 includes aconnector 146 such as a quick release connector or similar. Theroller hemming head 114 is connected to theslide 136 by theconnector 146. For example, theconnector 146 may include a throughhole 148 in the slidedistal end 144, and theroller hemming head 114 may be secured to theslide 136 by afastener 150 extending through theroller hemming head 114 and the through hole in theslide 136, and akeeper 152 engaged with the fastener. - The
roller hemming head 114 includes at least one hem roller, and may include a plurality ofdifferent hem rollers rollers 154 may be utilized for push-type roller hemming operations while theother roller 156 may be utilized for pull-type roller hemming operations. Also, one of therollers 154 may be configured to fit into locations with small clearances, while theother roller 156 may be configured to hem locations having larger clearances. Further, the rollers may be configured to perform different types of hems, such as flat hems and rope hems. Thehem rollers roller hemming head 114 via bearings to allow for smooth rotation of the rollers. Although, theroller hemming head 114 is shown having two hem rollers, the roller hemming head may have one roller or more than two rollers. - When current is applied to the
electromagnetic coils 122, the coils are subjected to a force (in either a left or right direction as viewed inFIG. 1 ) that is dependent upon the direction of current flow and the resultant electromagnetic field. Theelectromagnetic coils 122, being fixed, do not move, and the electromagnetic field generated by the coils acts upon themoveable yokes 128 in an opposite direction, causing themoveable yokes 128 and attachedshaft 124 to travel axially. The axial movement of theshaft 124 causes theslide 136 to move into or out of thehousing 116. Movement of theshaft 124 to the right causes theslide 136 to move outwardly relative to thehousing 116, while movement of theshaft 124 to the left causes theslide 136 to move inward. In turn, the movement of theslide 136 acts upon the connectedroller hemming head 114. Outward movement of theslide 136 provides a push force when thehem roller 154 is engaged with a panel to be hemmed. Likewise, inward movement of theslide 136 provides a pull force whenhem roller 156 is engaged with a panel. Further, the amount of push or pull force exerted by thehem rollers electromagnetic coils 122, which varies the amount of inward or outward force acting on theslide 136. As the magnitude of the current is increased or decreased, the hemming force also increases or decreases. - With reference to
FIG. 2 , in a second embodiment of the present invention a magnetically actuatedroller head 210 includes alinear actuator 212 and aroller hemming head 214 mounted on the linear actuator. Reference numbers similar to those of the first embodiment indicate similar features, and unless otherwise noted below, the second embodiment has features similar to the first embodiment. - The
linear actuator 212 includes a pair of opposingactuator members 258 fixedly mounted within theinner bore 218 of thehousing 216. Eachactuator member 258 may be an electromagnet including acylindrical bobbin 260 mounted in theinner bore 218. Amagnetic material 262 is disposed within thebobbin 260, and acoil 264 is wound on thebobbin 260. Theshaft 224 extends throughopenings 266 in thebobbins 260 and is freely moveable therethrough. Arare earth magnet 268 is disposed between the opposingactuator members 258 and is fixed to theshaft 224. Therare earth magnet 268 is a strong, permanent magnet made from alloys of rare earth elements (lanthanides). Examples of rare earth magnets include but are not limited to neodymium magnets and samarium-cobalt magnets. Therare earth magnet 268 is polarized and has its north and south poles disposed in an axial direction relative to theshaft 224. For example, in the embodiment ofFIG. 2 , the north pole of therare earth magnet 268 points to the right towards theroller hemming head 214, and the south pole points to the left towards theend cap 220 of thehousing 216. - Based upon the polarity of the
rare earth magnet 268, the magnetically actuatedroller hemming head 210 is arranged for push type roller hemming operations in which thehem roller 254 pushes against a panel to be hemmed. Due to the strength of the magnetic field of therare earth magnet 268, thelinear actuator 212 applies approximately 330 pounds of force in a linear direction at steady state with no external power/force (zero current) applied to theactuator members 258. Theactuator members 258 control and assist the actuation force of therare earth magnet 268. More specifically, the linear force transmitted by thelinear actuator 212 is adjustable in an increasing or decreasing manner by varying a current applied to thecoils 264. When a current of greater than approximately 1 Amp is applied to thecoils 264, the force exerted increases relative to the input value as follows: 1 Amp=360±10 pounds of force, 2 Amps=390±10 pounds of force, and 4 Amps=440±10 pounds of force. When a current of less than −1 Amp is applied to the coils 264 (i.e., less than 1 Amp in an opposite flow direction), the force exerted decreases relative to the input value as follows: −2 Amps=280±10 pounds of force, and −4 Amps=230±10 pounds of force. - Alternatively, as shown in
FIG. 3 , the polarity of therare earth magnet 268 can be reversed, i.e. the rare earth magnet may be disposed such that the south pole of the rare earth magnet points to the right towards theroller hemming head 214, and the north pole points to the left towards theend cap 220 of thehousing 216. In this arrangement, the magnetically actuatedroller hemming head 210 is arranged for pull type roller hemming operations in which thehem roller 256 is pulled toward a panel to be hemmed. At steady state, the amount of pull force is approximately 330 pounds, and the pull force can be varied from the steady state value by application of current to thecoils 264. - With reference to
FIG. 4 , in a third embodiment of the present invention a magnetically actuatedroller head 310 includes alinear actuator 312 and aroller hemming head 314 mounted on the linear actuator. Reference numbers similar to those of the first embodiment indicate similar features, and unless otherwise noted below, the third embodiment has features similar to the first embodiment. - The
linear actuator 312 includes a pair of opposingactuator members inner bore 318 of thehousing 316. Eachactuator member cylindrical shell 374 that is mounted in theinner bore 318. Theshaft 324 extends throughopenings 376 in theshell 374 and is freely moveable therethrough. Arare earth magnet 368 is disposed between the opposingactuator members shaft 324. A gap exist between therare earth magnet 368 and theinner bore 318 of thehousing 316. Therare earth magnet 368 is polarized and has its north and south poles disposed in an axial direction relative to theshaft 324. For example, in the embodiment ofFIG. 4 , the north pole of therare earth magnet 368 points to the right towards theroller hemming head 314, and the south pole points to the left towards theend cap 320 of thehousing 316. Also, the north pole of theactuator member 370 points to the left and the south pole points to the right, and the north pole of theactuator member 372 points to the right and the south pole points to the left. Therefore, the polarity of theactuator member 370,rare earth magnet 368, andactuator member 372 as viewed from left to right inFIG. 4 is north-south, south-north, south-north. - Based upon the polarity of the
actuator members rare earth magnet 368, the magnetically actuatedroller hemming head 310 is arranged for push type roller hemming operations in which thehem roller 354 pushes against a panel to be hemmed. The interactions (attraction and repulsion) of the magnetic fields of theactuator members rare earth magnet 368 result in approximately 330 pounds of outward force being applied to theslide 336 and in turn thehem roller 354. The distance between theactuator members rare earth magnet 368 provides compliance for the hem roller 354 (i.e., allows thehem roller 354 to travel small distances to the left and right as viewed inFIG. 4 ). Also, the opposing polarities of therare earth magnet 368 and theactuator member 372 aid in maintaining a constant hemming force through a stroke of thehem roller 354. - Alternatively, as shown in
FIG. 5 , the polarity of therare earth magnet 368 can be reversed, i.e. the rare earth magnet may be disposed such that the south pole of the rare earth magnet points to the right towards theroller hemming head 314, and the north pole points to the left towards theend cap 320 of thehousing 316. Therefore, the polarity of theactuator member 370,rare earth magnet 368, andactuator member 372 as viewed from left to right inFIG. 5 is north-south, north-south, south-north. In this arrangement, the magnetically actuatedroller hemming head 310 is arranged for pull type roller hemming operations in which thehem roller 356 is pulled toward a panel to be hemmed. The amount of pull force is approximately 330 pounds, and the opposing polarities of therare earth magnet 368 and theactuator member 370 aid in maintaining a constant hemming force through a stroke of thehem roller 356. - In the third embodiment, the
housing 316 andshaft 324 may be non-magnetic so as to not interfere or interact with the magnetic field of the rare earth magnets. - Although the invention has been described by reference to specific embodiments, it should be understood that numerous changes may be made within the spirit and scope of the inventive concepts described. Accordingly, it is intended that the invention not be limited to the described embodiments, but that it have the full scope defined by the language of the following claims.
Claims (20)
1. A magnetically actuated roller head comprising:
a linear actuator mountable on an end of a multi-axis robotic arm;
said linear actuator including a slide, a magnet operably connected to said slide and operable to urge said slide in a linear direction, and a connector disposed on a distal end of said slide; and
a roller hemming head mounted on said linear actuator by said connector, said roller hemming head including at least one hem roller.
2. The magnetically actuated roller head of claim 1 , wherein said magnet is a rare earth magnet.
3. The magnetically actuated roller head of claim 1 , wherein said linear actuator includes a rare earth magnet disposed between two opposing magnets, the polarity of one of said opposing magnets is disposed in the same direction as the polarity of said rare earth magnet and the polarity of the other of said opposing magnets is disposed in an opposite direction to the polarity of said rare earth magnet.
4. The magnetically actuated roller head of claim 3 , wherein said two opposing magnets are rare earth magnets.
5. The magnetically actuated roller head of claim 1 , wherein said linear actuator includes an electromagnet disposed on each of opposite sides of said magnet, said electromagnets controlling and assisting a force transmitted by said magnet.
6. The magnetically actuated roller head of claim 1 , wherein said slide includes an anti-rotate feature.
7. A magnetically actuated roller head comprising:
a housing including an internal bore, said housing being mountable on an end of a multi-axis robotic arm;
a pair of opposing actuator members fixedly mounted within said inner bore;
a shaft extending through said actuator members;
a magnet mounted on said shaft and moveable within said inner bore, said magnet being disposed between said actuator members;
a slide connected to said shaft and extending outwardly from said housing;
a connector disposed on a distal end of said slide; and
a roller hemming head mounted on said connector, said roller hemming head including at least one hem roller;
whereby said actuator members control and assist a hemming force applied by said roller hemming head through said magnet.
8. The magnetically actuated roller head of claim 7 , wherein said magnet is a rare earth magnet.
9. The magnetically actuated roller head of claim 7 , wherein said actuator members are rare earth magnets.
10. The magnetically actuated roller head of claim 9 , wherein the polarity of one of said actuator members is disposed in the same direction as the polarity of said rare earth magnet and the polarity of the other of said actuator members is disposed in an opposite direction to the polarity of said rare earth magnet.
11. The magnetically actuated roller head of claim 7 , wherein said actuator members are electromagnets.
12. The magnetically actuated roller head of claim 7 , wherein said housing includes an anti-rotate linear guide, and said slide includes an anti-rotate feature cooperable with said linear guide.
13. The magnetically actuated roller head of claim 12 , wherein said anti-rotate feature is one of a spline, a ball spline, and a square linear bearing.
14. A method of roller hemming comprising the steps of:
mounting a linear actuator on an end of a multi-axis robotic arm, said linear actuator including a slide, a magnet operably connected to said slide and operable to urge said slide in a linear direction, and a connector disposed on a distal end of said slide; and
mounting a roller hemming head on said linear actuator by said connector, said roller hemming head including at least one hem roller;
whereby said linear actuator provides a hemming force for performing roller hemming operations with said hem roller.
15. The method of claim 14 , wherein said magnet is a rare earth magnet.
16. The method of claim 14 , including the step of:
disposing said magnet between a pair of opposing actuator members.
17. The method of claim 16 , wherein said actuator members are rare earth magnets.
18. The method of claim 16 , wherein said actuator members are electromagnets.
19. The method of claim 14 , including the step of:
restricting axial rotation of said roller hemming head by providing a spline on said slide.
20. The method of claim 14 , including the step of:
providing a plurality of different hem rollers on said roller hemming head.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/406,224 US20090235713A1 (en) | 2008-03-24 | 2009-03-18 | Magnetically actuated roller head |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7055108P | 2008-03-24 | 2008-03-24 | |
US12/406,224 US20090235713A1 (en) | 2008-03-24 | 2009-03-18 | Magnetically actuated roller head |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090235713A1 true US20090235713A1 (en) | 2009-09-24 |
Family
ID=41087564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/406,224 Abandoned US20090235713A1 (en) | 2008-03-24 | 2009-03-18 | Magnetically actuated roller head |
Country Status (1)
Country | Link |
---|---|
US (1) | US20090235713A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120291508A1 (en) * | 2005-12-05 | 2012-11-22 | Honda Motor Co., Ltd. | Hemming working method and working apparatus |
US9181737B1 (en) * | 2014-06-03 | 2015-11-10 | Whirlpool Corporation | Oven door opening magnetic hinge |
US9352376B2 (en) | 2011-05-24 | 2016-05-31 | Comau S.P.A. | Hemming head device and method |
US9517502B2 (en) | 2013-07-01 | 2016-12-13 | Comau, S.P.A. | Tool head, with wireless monitoring system, for performing industrial operations |
CN107546949A (en) * | 2016-06-23 | 2018-01-05 | Mplus株式会社 | Horizontal linear vibration motor |
IT201600103099A1 (en) * | 2016-10-13 | 2018-04-13 | System Di Rosati S R L | ELECTROMAGNETIC LINEAR ACTUATOR. |
US20190070655A1 (en) * | 2017-09-07 | 2019-03-07 | Hyundai Motor Company | Roller hemming apparatus |
US10242675B2 (en) * | 2013-06-13 | 2019-03-26 | Schneider Electric Industries Sas | Human-machine dialogue device |
US10695859B2 (en) | 2017-02-23 | 2020-06-30 | Comau S.P.A. | Electric resistance welding head with electrodes located on the same side |
US10882095B2 (en) | 2016-10-10 | 2021-01-05 | Comau S.P.A. | Hemming head |
Citations (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3709083A (en) * | 1971-03-18 | 1973-01-09 | N Doherty | Electrically actuated punch press |
US3811313A (en) * | 1971-04-12 | 1974-05-21 | Boeing Co | Electromagnetic high energy impact apparatus |
US4151735A (en) * | 1977-09-28 | 1979-05-01 | The Boeing Company | Recoil assembly for electromagnetic high energy impact apparatus |
US4836008A (en) * | 1987-12-30 | 1989-06-06 | Emhart Industries, Inc. | Solenoid powered riveting tool |
US5175498A (en) * | 1990-03-05 | 1992-12-29 | General Electric Company | Method and apparatus for making spatially correlated eddy current measurements |
US5245904A (en) * | 1990-06-26 | 1993-09-21 | Meyerle George M | Non-skid ball bearings with adjustable stroke for punch presses |
US5307665A (en) * | 1991-07-16 | 1994-05-03 | Aura Systems, Inc. | Electromagnetic re-draw sleeve actuator |
US5325699A (en) * | 1991-07-16 | 1994-07-05 | Aura Systems, Inc. | Electromagnetic re-draw sleeve actuator |
US5398537A (en) * | 1991-12-06 | 1995-03-21 | Gemcor Engineering Corporation | Low amperage electromagnetic apparatus and method for uniform rivet upset |
US5471865A (en) * | 1993-09-09 | 1995-12-05 | Gemcor Engineering Corp. | High energy impact riveting apparatus and method |
US5507166A (en) * | 1994-08-23 | 1996-04-16 | Coors Brewing Company | Apparatus for stripping workpieces |
US5898244A (en) * | 1991-07-16 | 1999-04-27 | Aura Systems, Inc. | Dual-directional field coil actuator |
US6184503B1 (en) * | 1998-04-07 | 2001-02-06 | The Boeing Company | Riveter |
US6470729B1 (en) * | 2001-03-02 | 2002-10-29 | Ford Motor Company | Repair tool |
US6501357B2 (en) * | 2000-03-16 | 2002-12-31 | Quizix, Inc. | Permanent magnet actuator mechanism |
US6520269B2 (en) * | 2000-05-23 | 2003-02-18 | Hilti Aktiengesellschaft | Hand-held tool with electromagnetic hammer mechanism |
US6687965B2 (en) * | 2000-06-29 | 2004-02-10 | Siemens Automotive Corporation | Apparatus for setting armature/needle lift in a fuel injector |
US20040035172A1 (en) * | 2001-10-31 | 2004-02-26 | Masazumi Sawa | Device and method for hemming processing |
US6715332B2 (en) * | 2001-05-10 | 2004-04-06 | Sms Meer Gmbh | Method of drawing metal workpieces and drawing unit for a drawing machine |
US6823709B2 (en) * | 2002-08-06 | 2004-11-30 | The Boeing Company | Synchronized rivet gun system |
US6918449B2 (en) * | 2003-03-26 | 2005-07-19 | Matsushita Electric Works, Ltd. | Magnetic impact tool |
US7030724B2 (en) * | 2004-06-07 | 2006-04-18 | Pedersen Brad D | Method and apparatus for coil-less magnetoelectric magnetic flux switching for permanent magnets |
US7124611B2 (en) * | 2004-10-08 | 2006-10-24 | Valiant Corporation | Roller hemming machine |
US7128032B2 (en) * | 2004-03-26 | 2006-10-31 | Bose Corporation | Electromagnetic actuator and control |
US7131304B2 (en) * | 2004-01-30 | 2006-11-07 | National Institute Of Advanced Industrial Science And Technology | Spinning method and apparatus |
US7152447B2 (en) * | 2004-03-30 | 2006-12-26 | Tesco Engineering, Inc. | Roller type hemming apparatus |
US20070186608A1 (en) * | 2003-11-21 | 2007-08-16 | Ford Global Technologies, Llc | Sheet Metal Hem Forming Process |
US7257979B2 (en) * | 2002-10-21 | 2007-08-21 | Bl Chemie Gmbh & Co. Kg | Device and method for reshaping bar-shaped materials particularly for drawing and extruding |
US7441335B2 (en) * | 2003-09-04 | 2008-10-28 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Methods of electromagnetic forming aluminum alloy wheel for automotive use |
US7467532B2 (en) * | 2005-10-18 | 2008-12-23 | Ford Global Technologies, Llc | Apparatus for electromagnetically forming a workpiece |
US7481093B2 (en) * | 2004-06-18 | 2009-01-27 | Continental Automotive Systems Us, Inc. | Punching process with magnetostrictive power source |
US20090217726A1 (en) * | 2008-01-23 | 2009-09-03 | Harrow Aaron E | Vertical air compliant hemming head |
US20090235712A1 (en) * | 2008-03-24 | 2009-09-24 | Hirotec America, Inc. | Integrated push pull roller head |
US7752880B2 (en) * | 2006-08-21 | 2010-07-13 | Murata Kikai Kabushiki Kaisha | Linear motor mounted press machine and method for controlling linear motor mounted press machine |
US7770955B2 (en) * | 2008-03-14 | 2010-08-10 | Gm Global Technology Operations, Inc. | Automotive closure panel assembly |
US20100303813A1 (en) * | 2007-06-08 | 2010-12-02 | Biogen Idec Ma Inc. | Biomarkers for predicting anti-tnf responsiveness or non-responsiveness |
-
2009
- 2009-03-18 US US12/406,224 patent/US20090235713A1/en not_active Abandoned
Patent Citations (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3709083A (en) * | 1971-03-18 | 1973-01-09 | N Doherty | Electrically actuated punch press |
US3811313A (en) * | 1971-04-12 | 1974-05-21 | Boeing Co | Electromagnetic high energy impact apparatus |
US4151735A (en) * | 1977-09-28 | 1979-05-01 | The Boeing Company | Recoil assembly for electromagnetic high energy impact apparatus |
US4836008A (en) * | 1987-12-30 | 1989-06-06 | Emhart Industries, Inc. | Solenoid powered riveting tool |
US5175498A (en) * | 1990-03-05 | 1992-12-29 | General Electric Company | Method and apparatus for making spatially correlated eddy current measurements |
US5245904A (en) * | 1990-06-26 | 1993-09-21 | Meyerle George M | Non-skid ball bearings with adjustable stroke for punch presses |
US5898244A (en) * | 1991-07-16 | 1999-04-27 | Aura Systems, Inc. | Dual-directional field coil actuator |
US5325699A (en) * | 1991-07-16 | 1994-07-05 | Aura Systems, Inc. | Electromagnetic re-draw sleeve actuator |
US5307665A (en) * | 1991-07-16 | 1994-05-03 | Aura Systems, Inc. | Electromagnetic re-draw sleeve actuator |
US5398537A (en) * | 1991-12-06 | 1995-03-21 | Gemcor Engineering Corporation | Low amperage electromagnetic apparatus and method for uniform rivet upset |
US5471865A (en) * | 1993-09-09 | 1995-12-05 | Gemcor Engineering Corp. | High energy impact riveting apparatus and method |
US5575166A (en) * | 1993-09-09 | 1996-11-19 | Gemcor Engineering Corp. | High energy impact riveting apparatus and method |
US5507166A (en) * | 1994-08-23 | 1996-04-16 | Coors Brewing Company | Apparatus for stripping workpieces |
US6184503B1 (en) * | 1998-04-07 | 2001-02-06 | The Boeing Company | Riveter |
US6467326B1 (en) * | 1998-04-07 | 2002-10-22 | The Boeing Company | Method of riveting |
US6501357B2 (en) * | 2000-03-16 | 2002-12-31 | Quizix, Inc. | Permanent magnet actuator mechanism |
US6520269B2 (en) * | 2000-05-23 | 2003-02-18 | Hilti Aktiengesellschaft | Hand-held tool with electromagnetic hammer mechanism |
US6687965B2 (en) * | 2000-06-29 | 2004-02-10 | Siemens Automotive Corporation | Apparatus for setting armature/needle lift in a fuel injector |
US6470729B1 (en) * | 2001-03-02 | 2002-10-29 | Ford Motor Company | Repair tool |
US6715332B2 (en) * | 2001-05-10 | 2004-04-06 | Sms Meer Gmbh | Method of drawing metal workpieces and drawing unit for a drawing machine |
US20040035172A1 (en) * | 2001-10-31 | 2004-02-26 | Masazumi Sawa | Device and method for hemming processing |
US6823709B2 (en) * | 2002-08-06 | 2004-11-30 | The Boeing Company | Synchronized rivet gun system |
US7257979B2 (en) * | 2002-10-21 | 2007-08-21 | Bl Chemie Gmbh & Co. Kg | Device and method for reshaping bar-shaped materials particularly for drawing and extruding |
US6918449B2 (en) * | 2003-03-26 | 2005-07-19 | Matsushita Electric Works, Ltd. | Magnetic impact tool |
US7441335B2 (en) * | 2003-09-04 | 2008-10-28 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Methods of electromagnetic forming aluminum alloy wheel for automotive use |
US20070186608A1 (en) * | 2003-11-21 | 2007-08-16 | Ford Global Technologies, Llc | Sheet Metal Hem Forming Process |
US7347072B2 (en) * | 2003-11-21 | 2008-03-25 | Ford Global Technologies, Llc | Sheet metal hem forming process |
US7131304B2 (en) * | 2004-01-30 | 2006-11-07 | National Institute Of Advanced Industrial Science And Technology | Spinning method and apparatus |
US7128032B2 (en) * | 2004-03-26 | 2006-10-31 | Bose Corporation | Electromagnetic actuator and control |
US7252053B2 (en) * | 2004-03-26 | 2007-08-07 | Bose Corporation | Electromagnetic actuator and control |
US7152447B2 (en) * | 2004-03-30 | 2006-12-26 | Tesco Engineering, Inc. | Roller type hemming apparatus |
US7030724B2 (en) * | 2004-06-07 | 2006-04-18 | Pedersen Brad D | Method and apparatus for coil-less magnetoelectric magnetic flux switching for permanent magnets |
US7481093B2 (en) * | 2004-06-18 | 2009-01-27 | Continental Automotive Systems Us, Inc. | Punching process with magnetostrictive power source |
US7124611B2 (en) * | 2004-10-08 | 2006-10-24 | Valiant Corporation | Roller hemming machine |
US7467532B2 (en) * | 2005-10-18 | 2008-12-23 | Ford Global Technologies, Llc | Apparatus for electromagnetically forming a workpiece |
US7752880B2 (en) * | 2006-08-21 | 2010-07-13 | Murata Kikai Kabushiki Kaisha | Linear motor mounted press machine and method for controlling linear motor mounted press machine |
US20100303813A1 (en) * | 2007-06-08 | 2010-12-02 | Biogen Idec Ma Inc. | Biomarkers for predicting anti-tnf responsiveness or non-responsiveness |
US20090217726A1 (en) * | 2008-01-23 | 2009-09-03 | Harrow Aaron E | Vertical air compliant hemming head |
US7770955B2 (en) * | 2008-03-14 | 2010-08-10 | Gm Global Technology Operations, Inc. | Automotive closure panel assembly |
US20090235712A1 (en) * | 2008-03-24 | 2009-09-24 | Hirotec America, Inc. | Integrated push pull roller head |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8914964B2 (en) * | 2005-12-05 | 2014-12-23 | Honda Motor Co., Ltd. | Hemming working method and working apparatus |
US20120291508A1 (en) * | 2005-12-05 | 2012-11-22 | Honda Motor Co., Ltd. | Hemming working method and working apparatus |
US9352376B2 (en) | 2011-05-24 | 2016-05-31 | Comau S.P.A. | Hemming head device and method |
US10242675B2 (en) * | 2013-06-13 | 2019-03-26 | Schneider Electric Industries Sas | Human-machine dialogue device |
US9517502B2 (en) | 2013-07-01 | 2016-12-13 | Comau, S.P.A. | Tool head, with wireless monitoring system, for performing industrial operations |
US9181737B1 (en) * | 2014-06-03 | 2015-11-10 | Whirlpool Corporation | Oven door opening magnetic hinge |
US10284065B2 (en) * | 2016-06-23 | 2019-05-07 | Mplus Co., Ltd. | Horizontal linear vibration motor |
CN107546949A (en) * | 2016-06-23 | 2018-01-05 | Mplus株式会社 | Horizontal linear vibration motor |
US10882095B2 (en) | 2016-10-10 | 2021-01-05 | Comau S.P.A. | Hemming head |
IT201600103099A1 (en) * | 2016-10-13 | 2018-04-13 | System Di Rosati S R L | ELECTROMAGNETIC LINEAR ACTUATOR. |
US10695859B2 (en) | 2017-02-23 | 2020-06-30 | Comau S.P.A. | Electric resistance welding head with electrodes located on the same side |
US20190070655A1 (en) * | 2017-09-07 | 2019-03-07 | Hyundai Motor Company | Roller hemming apparatus |
US10799932B2 (en) * | 2017-09-07 | 2020-10-13 | Hyundai Motor Company | Roller hemming apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20090235713A1 (en) | Magnetically actuated roller head | |
KR100442676B1 (en) | Magnet movable electromagnetic actuator | |
US20110248804A1 (en) | Multistable Electromagnetic Actuators | |
EP1729509A3 (en) | Optical image stabilizer for camera lens assembly | |
EP1158547A3 (en) | Electromagnetic actuator and composite electro-magnetic actuator apparatus | |
US8739952B2 (en) | Flip-flop clutch | |
JP6122972B2 (en) | Electromagnetic actuator and solenoid valve device | |
JP2003106447A (en) | Shift actuator for transmission | |
US9871433B2 (en) | Linear actuator and tube assembly method for linear actuator | |
US6877391B2 (en) | Gear change device | |
JP2003106446A (en) | Variable speed operation device | |
US10354788B2 (en) | Universal solenoid actuator | |
CN114101719A (en) | Bearing pretightening force adjusting device, electric main shaft and machine tool | |
EP2936665B1 (en) | Magnet device comprising an acceleration unit which acts on the translator | |
US20060175172A1 (en) | Drive system for swivelling a panel of a vehicle | |
JPH01248410A (en) | Magnetic operating mechanism | |
US9463872B2 (en) | Bi-stable clutch with permanent magnet array | |
CN110415913B (en) | Electric control permanent magnet device based on local closing of permanent magnet magnetic force line | |
DE102010025766B4 (en) | Bistable solenoid | |
EP2608227B1 (en) | An electro pneumatic converter with low hysteresis characteristic | |
DE102017115973A1 (en) | Electromagnetic actuator | |
JP3687586B2 (en) | Shift actuator for transmission | |
CN112185721B (en) | Drive assembly of switch device | |
CN220232852U (en) | Symmetrical magnetic core tube | |
JP4186420B2 (en) | Shift actuator for transmission using electromagnetic solenoid |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HIROTEC AMERICA, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TOENISKOETTER, JAMES B.;REEL/FRAME:022485/0959 Effective date: 20090318 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |