FR2649029A1

FR2649029A1 - Method for piercing square and geometric holes

Info

Publication number: FR2649029A1
Application number: FR8907131A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-07-03
Filing date: 1989-07-03
Publication date: 1991-01-04

Abstract

Device for piercing square holes in wood and metal, actuated by a hammer drill. The invention relates to a device which pierces square holes in a single operation. It consists of a main body 1 formed of a hollow square rod 2 terminated at one end by a hollow cone 3 having four triangular tips; the opposite end is a cylindrically swelled hollow housing 4 containing a thrust ball bearing 5. Through this rod 2 there passes a drill bit 6 including, inter alia, a cylindrical body 7 which bears on the thrust ball bearing 5. This cylindrical body includes a rod which is also cylindrical 8 intended to take up movement in the chuck of the drill. A clamp 9 clamps the main body in order to oppose its gyration through the use of its fork 10 trapping the depth gauge rod of the drill. This invention is particularly intended for drilling square holes and mortises.

Description

une gorge dans laquelle s'insèrele circlips(Fig.6).a groove into which the circlips are inserted (Fig. 6).

LAbutée à billes (Fi.3).A l'intérieur de l'âme (2)(dans sa partie inférieure#1)s'ajuste une butée à billes de forme
CYLINdrique percée en son milieu d'un trou correspondant au
La présente invention concerne un procédé de perçage de trous carrés et de leur prolongement en mortaises pour assemblafres. The ball stop (Fi.3). Inside the core (2) (in its lower part # 1) is adjusted a form ball stop
CYLINDRICAL pierced in the middle with a hole corresponding to the
The present invention relates to a method of drilling square holes and their extension in mortises for assemblies.

T)ansle bois,la façon de mortaises se fait actuellement à l'aide de chemines à dents ou à l'aide de forets,la table support se déplacant sur des glissières.Ces deux procédés nécessitent un outillage lourd et fixe. T) In wood, the way of mortises is currently done using toothed chimneys or using drills, the support table moving on slides. These two processes require a heavy and fixed tool.

Dans le métal épais,la façon d'un troll carré se pratique par(1)le perçage d'un trou cylindrigue,(2)la mise en oeuvre d'un bédane agissant par soustraction d'un copeau à chaques passages successifs.La méthode est longue et délicate. In thick metal, the way of a square troll is practiced by (1) drilling a cylindrical hole, (2) using a chisel acting by subtracting a chip from each successive pass. method is long and delicate.

La présente invention combine dans un seul montage:un foret perçant par giration et un emporte pièce carré forant par percution,le tout composant un unique outil utilisé par l'intermédiaire d'une perceuse à percu@@ion#. The present invention combines in a single assembly: a drill piercing by gyration and a square cutter drilling by percussion, the whole component a single tool used by means of a percussion drill @@ ion #.

DESCRIPTIF:PL.1/2. Le corps principal FIG 1 se compose d'une tige carrée percée dwns son centre et sur toute se longueur, terminée à son extrémité par un cône creux(14)ce qui a pour effet de former 4 pointes triangulaires(emporte-pièces).DESCRIPTION: PL.1 / 2. The main body FIG 1 consists of a square rod pierced dwns its center and over any length, terminated at its end by a hollow cone (14) which has the effect of forming 4 triangular points (cookie cutters).

Sur l'une des quatre faces se trouve un évidement (10)dont le but est de permettre l'éjection des copeaux lors du per çage.L'intérieur de cette tige carrée est cylindriquement adaptée au diamètre du foret(Fig.2)placé en son centre.On one of the four faces is a recess (10) the purpose of which is to allow the ejection of the chips during drilling. The interior of this square rod is cylindrically adapted to the diameter of the drill (Fig. 2) placed in its center.

A l'extrémité opposeesu perçage,l'âme du corps principal(2) (cylindrique)renferme la partie essentielle du montage des différents éléments assemblés,et l'on peut distinguer en(12) diamètre du foret.Cette butée a un rôle intermédiaire pour faciliter la transmission des vibrations de la perceuse en marche sur le foret et pour en assurer l'enfoncement dans la matière.At the opposite end of the hole, the core of the main body (2) (cylindrical) contains the essential part of the assembly of the various assembled elements, and we can distinguish in (12) diameter of the drill. This stop has an intermediate role to facilitate the transmission of vibrations from the drill while running on the drill and to ensure that it is driven into the material.

Le foret(Fig.2).tes forets peuvent tre utilisés pour percer le bois ou le métal s'ils sont traités(ainsi que la tige carrée)en aciers spéciaux.Leur extrémité perçante comporte une plaquette trapézeidale affûtée(9),soudée sur l'extrémité du foret et dont les dimensions extérieures sont égales à celles du caté de la section carrée du porte-mèche(Fig.1) (donc supérieur au diamètre du foret).L' extrémité du foret opposée à la coupe(13)est filetée pour pouvoir le dévisser en vue de l'extraction du corps principal.Cette manoeuvre a pour but l'affûtage de l'extrémité du foret ainsi que celui du cône du corps principal.The drill (Fig. 2). These drills can be used to drill wood or metal if they are treated (as well as the square rod) in special steels. Their piercing end comprises a sharp trapezoidal plate (9), welded on the end of the drill and whose external dimensions are equal to those of the square of the square section of the drill bit (Fig. 1) (therefore greater than the diameter of the drill). The end of the drill opposite the cut (13) is threaded to be able to unscrew it for the extraction of the main body. This maneuver aims at sharpening the end of the drill as well as that of the cone of the main body.

Le manche de fixation sur la perceuse se compose d'un axe (7 FIG.4)comportant à une extrémité une partie renflée et cylindrique percée et filetée en son centre afin de recevoir la partie mâle filetée du foret en vue de son assemblage.The fixing handle on the drill consists of an axis (7 FIG. 4) having at one end a bulged and cylindrical part pierced and threaded in its center in order to receive the male threaded part of the drill for its assembly.

Cette partie cylindrique(14)assure la transmission des à-coup de la percussion et permPt par son diamètre extérieur le parfait centrage de l'assemblage. This cylindrical part (14) ensures the transmission of sudden percussion and permPt by its outside diameter the perfect centering of the assembly.

Se trouve ensuite le circlips(Fi.6)de fixation des différentes pièces assemblées,qui vient se loger dans une gorge pratiquée en intérieur de l'âme(12Fig.1)sur sa partie ksupérieure.La prolongation cylintlrique( 7)s 'adaptera aisément sur tous modèles de perceuses.Next is the circlip (Fi.6) for fixing the various assembled parts, which is housed in a groove made inside the core (12Fig.1) on its upper part. The cylindrical extension (7) will adapt easily on all models of drills.

Le pince anti-4retoire (Fir.5)(4)s1adepte par pincement sur la partie cylindrique du corps principal(2)une fois que l'assemblage(1)+(3)+(5)+(6)+(2)est réelisé.ta fixation de la pince se fait à l'aide de la vis 4' et la partie 4ȇst une fourchette permettant d'introduire la tringle de butée montée sur le corps e la perceuse et s'opposant à la giration de ce corps principel.L'étui carré de la mèche ainsi bloqué reste immobile(quant à sa partie diamétrale)lors du perçage et exerce pleinement sa fonction de tamponnoir. The anti-4retoire clamp (Fir.5) (4) can be gripped by pinching on the cylindrical part of the main body (2) once the assembly (1) + (3) + (5) + (6) + (2 ) is realisé.ta fixing of the clamp is done using the screw 4 'and the part 4ȇst a fork allowing to introduce the stop rod mounted on the body e the drill and opposing the gyration of this main body. The square case of the bit thus blocked remains stationary (as for its diametral part) during drilling and fully exercises its buffering function.

Les copeaux en résultant sont entrsinés par le foret puis éjectés par l'intermédiaire de l'orifice latéral(10 Fig.1).The resulting shavings are entered by the drill and then ejected through the lateral orifice (10 Fig. 1).

Ce procédé permet la fabrication dans toutes matières de trous carrés extrêmement précis,sans toutefois être limité à la seule forme carrée;toutes formes géometrîques sont possibles selon la forme donnée à l'emporte-pièce. This process allows the production in all materials of extremely precise square holes, without however being limited to the single square shape; all geometrical shapes are possible depending on the shape given to the cookie cutter.

Claims

REV.1 Device for drilling square holes and their mortise extension, characterized in that it includes a beading drill by turning freely rotating in a square punch, the assembly drilling by percussion and iretion; a tool used through an impact drill.

JEV.2 Device according to claim 1 constituted in that it is composed of a main body (1) comprising a hollow square size (2) which acts as a cookie cutter by its sharpened end in 4 points (11) and actuated by the jerks of the drill inside this rod being mounted a drill (5) driven by the drill (and also driven by percussion) .fl'ntre the time and the drill, in a cylindrical housing (8 ) of the main body is placed a thrust ball (3) which is the intermediary between the two movements (percussion and gyration).

REV. Device according to Claims 1 and 2, composed in that it relates to the power take-off in the drill chuck by a cylindrical extension (7) provided with a bulge (14) in which the drill bit is screwed by its threaded end (13) an anti-rotation pliers being fixed at ('t) on the cylindrical housing (1) of the main body; this pliers comprising a fork which traps the depth stop of the drill, opposing the gyratory movement and allowing only the transmission of jerks to the main body.