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Machine translation
1. (WO1981002118) A FLANGE FORMING DRILL MEANS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/002118    International Application No.:    PCT/FI1981/000006
Publication Date: 06.08.1981 International Filing Date: 29.01.1981
IPC:
B21C 37/29 (2006.01), B23Q 5/40 (2006.01)
Applicants:
Inventors:
Priority Data:
800280 30.01.1980 FI
Title (EN) A FLANGE FORMING DRILL MEANS
(FR) MOYEN DE PERCAGE FORMANT UN REBORD
Abstract: front page image
(EN)A flange forming drill means for drilling a hole through the side of a pipe or the like and for forming a hole encircling flange. The drill means comprises: a body (1), a drive shaft (2) rotatably journalled to the body, a drill rod with its drill bit (5) mounted on the end of the drive shaft (2), forming members (6) partly fitted within the drill rod (5), an adjustment member (7), by turning of which around the drill rod the forming members (6) can be made to project beyond the jacket surface of the drill rod (5), supporting legs (8) by which the device can be supported against a work piece (10) and which are fitted on the body (1) on either side of the drive shaft (2) in parallel relationship therewith, a feeding nut (13) mounted on the supporting legs (8) and which can be opened and closed for removal from and engagement with a feeding screw (14) formed on the drive shaft (2). When the drive shaft (2) is rotating and the feeding nut is in the closed position, the supporting legs (8) project outwards from the body (1) resulting in rising of the projecting forming members (6), rotating along with the drill rod (5), from below the edges of the hole and thus forming a flange. The feeding nut (13) is arranged to close automatically by means of a link mechanism (16-20) when the supporting legs (8) have moved a certain distance into the body (1). To the supporting legs (8) are secured brake bits (11) at such a level that they respond to the adjustment member (7) when the supporting legs (8) have moved said certain distance into the body (1). Thereby said brake bits (11) turn the adjustment member (7) relative to the drill rod (5) and effect the extension of the forming members (6) substantially simultaneously with the closure of the feeding nut (13).
(FR)Moyen de percage formant un rebord servant a percer un trou dans la paroi d"une conduite ou similaire et a former un trou entoure d"un rebord. Le moyen de percage comprend: un corps (1), un arbre d"entrainement (2) fixe de maniere rotative au corps, une meche avec sa pointe de percage (5) montee sur l"extremite de l"arbre d"entrainement (2), des organes de formage (6) montes partiellement a l"interieur de la meche (5), un organe d"ajustage (7) dont la rotation autour de la meche fait saillir les organes de formage (6) de la surface de chemise de la meche (5), des jambes (8) de soutien au moyen desquelles le dispositif peut etre maintenu contre une piece a usiner (10) et qui sont montes sur le corps (1) de chaque cote de l"arbre d"entrainement (2) parallelement a celui-ci, un ecrou d"alimentation (13) monte sur les jambes de support (8) et qui peut etre ouvert et ferme de maniere a pouvoir s"eloigner ou bien se mettre en prise avec un filetage d"alimentation (14) forme sur l"arbre d"entrainement (2). Lorsque l"arbre d"entrainement (2) est en rotation et l"ecrou d"alimentation se trouve dans la position fermee, les jambes de support (8) s"avancent vers l"exterieur a partir du corps (1) ce qui provoque l"ecartement des organes de formage en saillie sur la tete de percage (6), en rotation avec la meche (5), au-dessous des bords du trou, permettant ainsi de former une saillie. L"ecrou d"alimentation (13) est concu de maniere a se fermer automatiquement au moyen d"un mecanisme de liaison (16-20) lorsque les jambes de support (8) se deplacent d"une certaine distance a l"interieur du corps (1). Des mors de freinage (11) sont fixes aux jambes de support (8) a un niveau tel qu"ils reagissent a l"organe d"ajustage (7) lorsque les jambes de support (8) se deplacent d"une certaine distance a l"interieur du corps (1). Lesdits mors de freinage (11) tournent ainsi l"organe d"ajustage (7) par rapport a la meche (5) et effectuent l"extension des organes de formage (6) sensiblement simultanement a la fermeture de l"ecrou d"alimentation (13).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)