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1. WO1992014566 - METHOD, RIVET-PUNCH, RIVET, ETC. FOR JOINING SEVERAL METAL SHEETS BY USING NON-HEAT-TREATING RIVETS MADE FROM AN ALUMINIUM ALLOY

Publication Number WO/1992/014566
Publication Date 03.09.1992
International Application No. PCT/NL1992/000034
International Filing Date 18.02.1992
Chapter 2 Demand Filed 17.09.1992
IPC
B21J 15/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
15Riveting
02Riveting procedures
B21J 15/36 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
15Riveting
10Riveting machines
36Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
CPC
B21J 15/02
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
15Riveting
02Riveting procedures
B21J 15/36
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
15Riveting
10Riveting machines
36Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
Y10T 29/49943
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
29Metal working
49Method of mechanical manufacture
49826Assembling or joining
49908Joining by deforming
49938Radially expanding part in cavity, aperture, or hollow body
49943Riveting
Y10T 29/53774
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
29Metal working
53Means to assemble or disassemble
53709Overedge assembling means
5377Riveter
53774Single header
Applicants
  • BRANDTS, Michiel, Pieter [NL]/[NL]
Inventors
  • BRANDTS, Michiel, Pieter
Agents
  • MENSEN, Ir, H.
Priority Data
910028619.02.1991NL
Publication Language English (EN)
Filing Language Dutch (NL)
Designated States
Title
(EN) METHOD, RIVET-PUNCH, RIVET, ETC. FOR JOINING SEVERAL METAL SHEETS BY USING NON-HEAT-TREATING RIVETS MADE FROM AN ALUMINIUM ALLOY
(FR) PROCEDE, RIVETEUSE, RIVET SERVANT A ASSEMBLER PLUSIEURS TOLES DE METAL AU MOYEN DE RIVETS NON TRAITES THERMIQUEMENT FABRIQUES EN ALLIAGE D'ALUMINIUM
Abstract
(EN)
The invention concerns a method (device and product) for riveting a packet (50) of sheets (51, 52) by means of unannealed aluminium rivets made from an alloy harder than that of the relatively soft AD rivets in common use; this method is characterized by the fact that the expansion of the head to be formed at the shank end (58, 59) of the rivet during the riveting process is controlled by a snap-tool (62) which encloses the shank end (58, 59) at first loosely. When the expansion of the head diameter approaches D = 1,5 d (with d the rivet diameter), i.e., the limit above which cracks form in the head, the tool (62) prevents further deformation and forces the material of the head to deflect towards the central portion of the rivet shank (57) which subsequently expands and widens the hole (53) sufficiently to make the riveted joint last considerably longer. The good loosely and, later in the process, tightly fitted enclosing of the shank end (58, 59) by the snap-tool (62) allows the riveting to be done manually. This can still be improved further by using a snap-tool (62) with a profile (67, 68, 69) complementary to the contour of the shank end (58, 59).
(FR)
L'invention se rapporte à un procédé (dispositif et produit) servant à riveter un ensemble (50) de tôles (51, 52) au moyen de rivets en aluminium non recuit fabriqués à partir d'un alliage plus dur que celui des rivets AD en alliage relativement doux, utilisés habituellement; ce procédé est caractérisé par le fait que l'expansion de la tête à former à l'extrémité de la tige (58, 59) du rivet pendant le processus de rivetage, est commandée par une riveteuse (62) entourant ladite etrémité (58, 59), d'abord sans la serrer. Quand on approche de l'expansion du diamètre de la tête D = 1,5 d (d représentant le diamètre du rivet), c'est-à-dire la limite au-delà de laquelle se produit une rupture de la tête, la riveteuse (62) empêche une déformation plus importante et provoque l'écartement de la matière formant la tête vers la partie centrale de la tige du rivet (57) qui s'élargit et agrandit le trou (53) suffisamment pour prolonger considérablement la durée du joint riveté. Le processus de serrage progressif de l'extrémité de la tige (58, 59) au moyen de la riveteuse (62) permet d'effectuer l'opération à la main. On peut encore améliorer celle-ci en utilisant une riveteuse (62) dont le profil (67, 68, 69) est complémentaire au contour de l'extrémité de la tige (58, 59).
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