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Magnetically actuated roller head

a technology of magnetic actuators and roller heads, which is applied in the direction of propulsion systems, metal-working machine components, manufacturing tools, etc., can solve the problems of increasing the cost, size, and complexity of a conventional roller hemming head

Inactive Publication Date: 2009-09-24
HIROTEC AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]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.
[0011]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.

Problems solved by technology

These requirements may elevate the cost, size, and complexity of a conventional roller hemming head.

Method used

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Examples

Experimental program
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Effect test

first embodiment

[0022]With reference to FIG. 1, in a first embodiment 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.

[0023]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.

[0024]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 mem...

third embodiment

[0037]In the third embodiment, 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.

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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

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the priority of U.S. Provisional Application No. 61 / 070,551 filed Mar. 24, 2008.TECHNICAL FIELD[0002]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.BACKGROUND OF THE INVENTION[0003]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.SUMMARY OF THE INVENTION[0004]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 h...

Claims

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Application Information

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IPC IPC(8): B21D39/02B21D19/04
CPCB21D39/021B21D39/023Y10T29/53996H02K41/03Y10T29/53787H02K33/16
Inventor TOENISKOETTER, JAMES
Owner HIROTEC AMERICA
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