[특허]Self-piercing rivet setting apparatus and system

[미국특허] Self-piercing rivet setting apparatus and system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B23P-019/00
출원번호	UP-0152008 (2005-06-14)
등록번호	US-7810231 (2010-11-01)
우선권정보	JP-2001-391576(2001-12-25)
발명자 / 주소	Naitoh, Nobuharu
출원인 / 주소	Newfrey LLC
대리인 / 주소	Harness, Dickey & Pierce, P.L.C.
인용정보	피인용 횟수 : 3 인용 특허 : 84

초록 ▼

A self-piercing rivet setting apparatus (9) comprises a punch (14) and a die (18) for driving a self-piercing rivet into a plurality of workpieces including a receiving-side workpiece adjacent to the die. The self-piercing rivet has a large-diameter head and a hollowed leg. The leg is driven to pierce the workpieces while allowing the front end of the leg to be expanded and deformed in its radial outward direction and to be stayed in the receiving-side workpiece without passing therethrough, to connect the plurality of workpieces with each other by the expanded leg and the head. The die includes a first die member (26) having a first cavity (25), and a second die member (30) having a second cavity (27) and a protruding pin (29) provided at the center of the second cavity. The first cavity is adapted to allow the leg of the self-piercing to be driven into the workpieces in a straight direction when the self-piercing rivet is pressed by the punch (14). The second cavity and the protruding pin are adapted to allow the leg of the self-piercing rivet being piercing the workpieces to be expanded and deformed in its radial outward direction.

대표청구항 ▼

I claim: 1. A self-piercing rivet setting apparatus comprising: a self-piercing rivet; a first die member having a first cavity; a second die member having a second cavity and a protruding pin in the second cavity; and a movable table supporting the first and second die members to selectively allow either one of the first and second die members to receive the self-piercing rivet; the first cavity allowing a leading portion of the self-piercing rivet to be driven in a straight direction when the self-piercing rivet is advanced toward the first die member, and the second cavity and protruding pin of the second die member causing the leading portion of the self-piercing rivet to be outwardly expanded and deformed when the self-piercing rivet is advanced toward the second die member. 2. The apparatus of claim 1 further comprising: an electric motor; a punch operably advancing the self-piercing rivet; and a mechanical transmission coupling the electric motor to the punch. 3. The apparatus of claim 1 further comprising: a C-shaped frame; a shaft rotatably supporting the movable table to the C-shaped frame; and a drive device operably moving the movable table and the first and second die members relative to an advancing direction of the self-piercing rivet. 4. The apparatus of claim 1, further comprising: a punch movably attached to the apparatus operating to displace the self-piercing rivet; wherein the self-piercing rivet is prevented from completely penetrating through a die-side workpiece by a reaction force transmitted to the punch when the self-piercing rivet contacts the die-side workpiece in a first stage operation, which initiates a second stage operation. 5. The apparatus of claim 1 wherein the die members each include a substantially flat die surface supporting a workpiece surface immediately adjacent a radius transitioning into the cavity. 6. The apparatus of claim 1 wherein a central surface of the first cavity is free of projections. 7. The apparatus of claim 1 further comprising a workpiece pierced by the leading portion of the self-piercing rivet and the leading portion being driven in the straight direction after initiation of the piercing when aligned with the first die member. 8. A self-piercing rivet setting apparatus, comprising: a self-piercing rivet; a first die member having a first cavity; at least a second die member having a second cavity and a protruding pin in the second cavity; the first cavity allowing a leading portion of the self-piercing rivet to be driven in a straight direction when the self-piercing rivet is advanced toward the first die member, and the second cavity and protruding pin of the second die member causing the leading portion of the self-piercing rivet to be outwardly expanded and deformed when the self-piercing rivet is advanced toward the second die member; a punch operably advancing the self-piercing rivet; a C-shaped frame; wherein the punch is coupled to one of the ends of the frame and is movable toward the other end of the C-shaped frame; and a rotary structure coupled to the frame and supporting the first and second die members, the rotary structure being operable to allow either one of the first and second die members to be selectively positioned at the position aligned with the punch so as to receive the self-piercing rivet to be driven by the punch. 9. A self-piercing rivet setting apparatus comprising: a hollowed-leg self-piercing rivet; a first die member having a first cavity; and at least a second die member having a second cavity and a protruding pin in the second cavity, the first and second die members rotatable about a shaft to selectively allow either the first or the second die member to receive the self-piercing rivet; in a first stage the first cavity allowing a hollowed-leg portion of the self-piercing rivet to be driven in a straight direction when the self-piercing rivet is advanced toward the first die member through a workpiece, and in a second stage after rotation to align the second die member with the self-piercing rivet the second cavity and protruding pin of the second die member causing the hollowed-leg portion of the self-piercing rivet to be outwardly expanded and deformed when the self-piercing rivet is advanced toward the second die member in a second workpiece and the protruding pin is partially received in the hollowed-leg portion of the self-piercing rivet. 10. The apparatus of claim 9 further comprising a head of the hollowed-leg self-piercing rivet adapted to be interposed partially within the workpiece when the hollowed-leg portion of the self-piercing rivet is outwardly expanded. 11. The apparatus of claim 9 further comprising: an electric motor; a punch operably advancing the self-piercing rivet; and a mechanical transmission coupling the electric motor to the punch. 12. The apparatus of claim 9 further comprising a structure operably moving the first and second die members relative to an advancing direction of the self-piercing rivet. 13. The apparatus of claim 9 wherein the self-piercing rivet is prevented from completely penetrating through a die-side workpiece. 14. The apparatus of claim 9 wherein the die members each include a substantially flat die surface supporting a workpiece surface immediately adjacent a radius transitioning into the cavity. 15. The apparatus of claim 9 wherein a central surface of the first cavity is free of projections. 16. A self-piercing rivet setting apparatus comprising: a hollowed-leg self-piercing rivet; a first die member having a first cavity; at least a second die member having a second cavity and a protruding pin in the second cavity; the first cavity allowing a hollowed-leg portion of the self-piercing rivet to be driven in a straight direction when the self-piercing rivet is advanced toward the first die member through a workpiece, and the second cavity and protruding pin of the second die member causing the hollowed-leg portion of the self-piercing rivet to be outwardly expanded and deformed when the self-piercing rivet is advanced toward the second die member in a second workpiece and the protruding pin is partially received in the hollowed-leg portion of the self-piercing rivet; a punch operably advancing the self-piercing rivet; a C-shaped frame; wherein the punch is coupled to one of the ends of the frame and is movable toward the other end of the C-shaped frame; and a rotary structure coupled to the frame and supporting the first and second die members, the rotary structure being operable to allow either one of the first and second die members to be selectively positioned at the position aligned with the punch so as to receive the self-piercing rivet to be driven by the punch.

이 특허에 인용된 특허 (84) 인용/피인용 타임라인 분석

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[미국특허] Self-piercing rivet setting apparatus and system 원문보기

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[미국특허] Self-piercing rivet setting apparatus and system 원문보기

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