[특허]Riveting system and process for forming a riveted joint

Newfrey LLC

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Riveting system and process for forming a riveted joint

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B23Q-015/00 B23Q-017/00
미국특허분류(USC)	029/716; 029/798; 029/243.53; 700/160; 700/170
출원번호	UP-0360939 (2006-02-23)
등록번호	US-7752739 (2010-08-02)
우선권정보	DE-197 31 222(1997-07-21)
발명자 / 주소	Mauer, Dieter Roeser, Hermann Opper, Reinhold Wojcik, Andreas Schoenig, Christian
출원인 / 주소	Newfrey LLC
대리인 / 주소	Harness, Dickey & Pierce, P.L.C.
인용정보	피인용 횟수 : 13 인용 특허 : 107

초록

A riveting system is operable to join two or more workplaces with a rivet. In another aspect of the present invention, a self-piercing rivet is employed. Still another aspect of the present invention employs an electronic control unit and one or more sensors to determine a riveting characteristic and/or an actuator characteristic.

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The invention claimed is: 1. A riveting system comprising: a riveting tool including: (a) an electromagnetic actuator; (b) a transmission directly driven by the electromagnetic actuator; (c) a rivet-advancing member movable in response to actuation by the transmission; at least one electronic control unit electrically connected to the riveting tool, the electronic control unit being operable to control energization and deenergization of the electromagnetic actuator; a first pneumatically actuated, rivet-feeding tube; at least a second pneumatically actuated, rivet-feeding tube; a rivet-size selector located in a rivet transfer path between both of the feeding tubes and the riveting tool, the selector being automatically controlled by the electronic control unit; a self-piercing rivet movable along the first tube; at least two automotive vehicle workpieces joined together by the rivet; the rivet being prevented from piercing completely through all of the workpieces; and a robot, the riveting tool being mounted to the robot; and the electronic control unit recalling information about a specific joint to be worked on and then sending a signal to the selector as to a rivet size desired. 2. The system of claim 1 further comprising at least one sensor operably indicating the size of a rivet being transferred through at least one of the feeding tubes. 3. The system of claim 1, further comprising a self-piercing rivet pneumatically fed through at least one of the feeding tubes and advanced by the member. 4. The system of claim 1 further comprising a first rivet of a first length is fed to the selector through the first feeding tube, and a second rivet of a second and different length is fed to the selector through the second feeding tube. 5. The system of claim 1 further comprising a sensor operably indicating the quantity of riveting force applied by the rivet advancing member. 6. The system of claim 1 wherein the selector mechanically transfers a desired size rivet to the riveting tool. 7. The system of claim 1 further comprising a workpiece clamp linearly advancing at least partially with the rivet advancing member. 8. The system of claim 1 further comprising a C-frame holding the riveting tool and a die attached to an opposite arm of the C-frame than the riveting tool. 9. A riveting system comprising: a riveting tool including an automatic actuator and a rivet pushing punch operably driven by the actuator; an electronic control unit electrically connected to the riveting tool, the electronic control unit being operable to control energization and deenergization of the actuator, the electric control unit operably displaying a force-displacement curve indicative of rivet setting, and the electronic control unit operably monitoring rivet joint quality; a first set of self-piercing rivets operably driven by the punch; a first feeder storing the first rivets; a first feed conduit coupled to the first feeder, the first feed conduit pneumatically transporting the first rivets from the first feeder; at least a second set of self-piercing rivets operably driven by the punch, the second rivets having a different characteristic than the first rivets; at least a second feeder storing the second rivets; at least a second feed conduit coupled to the second feeder, the second feed conduit pneumatically transporting the second rivets from the second feeder; a junction device connected to the first feed conduit and the second feed conduit, the electronic control unit recalling information about a specific joint to be worked on and then sending a signal to the junction device to cause one of the first and second rivets to be fed to the riveting tool; a substantially C-shaped frame, the riveting tool being mounted to a first arm of the frame; and a die coupled to a second arm of the frame; wherein the rivets are prevented from contacting the die during rivet setting when acceptable joints are created. 10. The system of claim 9 wherein the different rivet characteristic is rivet size. 11. The system of claim 9 wherein each of the first rivets have a first length and each of the second rivets have a second and longer length. 12. The system of claim 9 wherein the actuator uses hydraulics. 13. The system of claim 9 further comprising: a transmission; the actuator including an electric motor; the transmission operably converting rotary motion caused by energization of the electric motor to linear motion; the punch linearly moving in response to actuation by the transmission; and the electric motor being automatically controlled by the electric control unit. 14. The system of claim 9 further comprising at least one sensor associated with one of the feed conduits operable to indicate the feeding condition of a rivet being transferred through the one feed conduit, the sensor operably sending a signal to the electronic control unit. 15. The system of claim 9 wherein the first feeder includes a rotary drum, an escapement mechanism and pneumatic actuators operably driving the drum and mechanism. 16. The system of claim 9 wherein the junction device further comprises a reciprocating slide mechanism which is controlled by the electronic control unit. 17. The system of claim 9 further comprising a single exit feed connecting the junction device to the riveting tool for transferring the selected size rivets therebetween. 18. The system of claim 9 further comprising sensors connected to the electronic control unit operably measuring riveting force and punch movement, the electronic control unit operably comparing actual sensor measurements to previously stored measurements and stopping rivet setting if an undesired condition is determined. 19. A riveting system comprising: a riveting tool including an automatic actuator and a rivet pushing punch operably driven by the actuator; an electronic control unit electrically connected to the riveting tool, the electronic control unit being operable to control energization and deenergization of the actuator, the electric control unit operably displaying a force-displacement curve indicative of rivet setting; a first rivet operably driven by the punch; a first feeder storing the first rivet; a first feed conduit coupled to the first feeder, the first feed conduit pneumatically transporting the first rivet from the first feeder; at least a second rivet operably driven by the punch, the second rivet having a different characteristic than the first rivet; at least a second feeder storing the second rivet; at least a second feed conduit coupled to the second feeder, the second feed conduit pneumatically transporting the second rivet from the second feeder; a junction device connected to the first feed conduit and the second feed conduit, the junction device causing one of the first and second rivets to be fed to the riveting tool; a support, the riveting tool being mounted to a first arm of the support; a die coupled to a second arm of the support; a first sensor operably measuring a characteristic indicative of rivet setting force; and a second sensor operably measuring a characteristic indicative of punch Displacement; the first and second sensors being connected to the electronic control unit, the electronic control unit recalling information about a specific joint to be worked on and then sending a signal to the junction device as to which of the rivets is needed. 20. The system of claim 19 wherein the different rivet characteristic is rivet size. 21. The system of claim 19 wherein each of the first rivet has a first length and the second rivet has a second and longer length. 22. The system of claim 19 wherein the actuator uses hydraulics. 23. The system of claim 19 further comprising: a transmission; the actuator including an electric motor; the transmission operably converting rotary motion caused by energization of the electric motor to linear motion; the punch linearly moving in response to actuation by the transmission; and an electronic control unit automatically controlling the electric motor. 24. The system of claim 19 further comprising at least one sensor associated with one of the feed conduits operable to indicate the feeding condition of a rivet being transferred through the one feed conduit. 25. The system of claim 19 wherein the first feeder includes a rotary drum, an escapement mechanism and pneumatic actuators operably driving the drum and mechanism. 26. The system of claim 19 further comprising an electronic control unit connected to the sensors, and the junction device further comprises a reciprocating slide mechanism automatically controlled by the electronic control unit. 27. The system of claim 19 further comprising a single exit feed connecting the junction device to the riveting tool for transferring the selected size rivet therebetween. 28. The system of claim 19 wherein the junction device includes a pneumatically actuated reciprocating slide. 29. The system of claim 19 further comprising: at least two workpieces joined together by the rivets; and an articulated robotic arm operably moving the riveting tool relative to the workpieces; wherein at least one of the rivets in a self-piercing rivet prevented from piercing completely through all of the workpieces. 30. The system of claim 29 wherein the workpieces are automotive vehicle components. 31. The system of claim 19 wherein the feed conduits are at least semi-flexible tubes having a substantially T-shaped inside profile corresponding to an outside shape of the rivet fed therethrough.

이 특허에 인용된 특허 (107)

이 특허를 인용한 특허 피인용횟수: 13

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Riveting system and process for forming a riveted joint

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Riveting system and process for forming a riveted joint

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이 특허에 인용된 특허 (107)

이 특허를 인용한 특허 피인용횟수: 13

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