FR2463655A1 - Hollow drill bit for walls - has peripheral distance between grinder segments at least equal to segment length (OE 15.6.80) - Google Patents

Hollow drill bit for walls - has peripheral distance between grinder segments at least equal to segment length (OE 15.6.80) Download PDF

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Publication number
FR2463655A1
FR2463655A1 FR8017954A FR8017954A FR2463655A1 FR 2463655 A1 FR2463655 A1 FR 2463655A1 FR 8017954 A FR8017954 A FR 8017954A FR 8017954 A FR8017954 A FR 8017954A FR 2463655 A1 FR2463655 A1 FR 2463655A1
Authority
FR
France
Prior art keywords
support
segments
grinding wheel
drill bit
walls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR8017954A
Other languages
French (fr)
Inventor
Siemund Thaler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tyrolit-Schleifmittelwerke Swarovski KG
Original Assignee
Tyrolit-Schleifmittelwerke Swarovski KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tyrolit-Schleifmittelwerke Swarovski KG filed Critical Tyrolit-Schleifmittelwerke Swarovski KG
Publication of FR2463655A1 publication Critical patent/FR2463655A1/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles

Abstract

The hollow drill bit is for making openings in walls etc., and has grinder segments, typically diamond-coated, at one end of a cylindrical metal body. The distance (f) along the periphery of the body (1) between successive segments (2) is equal to or greater than the length (1) of a segment in this direction. A central masonry drill bit (3), protruding beyond the segments acts as a centring device. The masonry drill bit can be interchangeably mounted in the hollow one, being clamped by a screw in a bore in an extension piece on the latter.

Description

La présente invention se rapporte à un foret pour pratiquer des ouvertures dans les murs, etc... et dans lequel il est prévu sur l'une des faces extrêmes d'un support métallique, cylindrique et creux, des segements de meules en une matière abrasive, par exemple de meules diamantées, à une certaine distance les uns des autres. The present invention relates to a drill for making openings in walls, etc ... and in which there are provided on one of the end faces of a metallic, cylindrical and hollow support, segments of grinding wheels made of a material abrasive, such as diamond wheels, at a distance from each other.

Lors de la pose des installations électriques dans des bâtiments en construction, il faut prévoir des ouvertures appropriées dans les murs pour les commutateurs, les prises et les bonites de dérivation. When installing electrical installations in buildings under construction, there must be appropriate openings in the walls for switches, sockets and bypass lines.

D'après l'état de la technique antérieure, ces ouvertures sont pratique se dans la maçonnerie en frappant avec un ciseau, ce qui prend beaucoup de temps et ne peut, en outre, qu'être fait de manière peu précise. According to the state of the prior art, these openings are practical in masonry by hitting with a chisel, which is very time-consuming and, moreover, can only be done imprecisely.

Les forets creux diamantés connus, avec les perceuses nécessaires pour leur utilisation, sont trop peu maniables pour cet emploi et de plus, leur acquisition est trop coûteuse. The known diamond hollow drills, with the drills necessary for their use, are too impractical for this use and, moreover, their acquisition is too costly.

La présente invention a pour objet de réaliser un foret creux du type cité ci-dessus qui se prête particulièrement bien aux travaux cités. The object of the present invention is to produce a hollow drill of the type mentioned above which lends itself particularly well to the works mentioned.

Ce qui importe à cet égard est que ce foret creux puisse aussi être utilisé pour le meulage à sec. Cependant il faut aussi tenir compte de la faible force motrice disponible si un tel foret est monté sur une perforatrice à main. What is important in this regard is that this hollow drill can also be used for dry grinding. However, it is also necessary to take into account the low motive force available if such a drill is mounted on a hand drill.

En outre, l'invention doit garantir l'application sûre et le centrage précis de la mèche creuse sur le mur à l'aide d'une perforatrice à main. In addition, the invention must guarantee the safe application and precise centering of the hollow drill bit on the wall using a hand drill.

Suivant l'invention, le but visé est atteint, du fait que la distance entre deux segments voisins de meule, mesurée dans le sens périphérique du support, est au moins aussi grande - et de préférence plus grande - que la longueur d'un segment, et qu'il est prévu selon l'axe central du support cylindrique un dispositif centreur sous forme d'une mèche de tarière à goujon, qui fait saillie au-delà des segments de meule.  According to the invention, the aim is achieved, since the distance between two neighboring grinding wheel segments, measured in the peripheral direction of the support, is at least as great - and preferably greater - than the length of a segment , and that there is provided along the central axis of the cylindrical support a centering device in the form of an auger bit of stud, which projects beyond the grinding wheel segments.

De préférence, ladite mèche est montée de manière échangeable sur le support, par exemple en prévoyant que sa tige soit logée dans un alésage d'un prolongement du support et maintenue par une vis de serrage
Dans une autre forme particulière de réalisation de l'invention, le support est pourvu,à son extrémité opposée aux segments de meule, d'une plaque de fermeture présentant des trous d'évacuation.Preferably, said wick is exchangeably mounted on the support, for example by providing that its rod is housed in a bore of an extension of the support and held by a clamping screw
In another particular embodiment of the invention, the support is provided, at its end opposite to the grinding wheel segments, with a closure plate having evacuation holes.

Dans une autre forme d'exécution, des trous d'évacuation sous forme de fentes sont prévus dans la paroi du support, ces fentes étant de préférence orientées parallèlement à l'axe dé rotation du support. In another embodiment, evacuation holes in the form of slots are provided in the wall of the support, these slots being preferably oriented parallel to the axis of rotation of the support.

L'invention sera décrite ci-dessous plus en détail en référence au dessin annexé qui en illustre un exemple de réalisation et sur lequel
La figure 1 montre, en une vue de dessus schématique, un foret creux conforme à l'invention
La figure 2 est une vue en coupe schématique suivant la ligne A-A de la figure 1 ; et
La figure 3 est une vue latérale schématisée d'un foret creux conforme à l'invention.The invention will be described below in more detail with reference to the accompanying drawing which illustrates an exemplary embodiment thereof and in which
Figure 1 shows, in a schematic top view, a hollow drill according to the invention
Figure 2 is a schematic sectional view along line AA of Figure 1; and
Figure 3 is a schematic side view of a hollow drill according to the invention.

Pour l'essentiel, le foret creux conforme à l'invention se compose d'un support en forme de cylindre creux 1 dont la face frontale est garnie de segments de meule 2. Essentially, the hollow drill according to the invention consists of a support in the form of a hollow cylinder 1, the front face of which is furnished with grinding wheel segments 2.

Ces segments de meule présentent de préférence un abrasif diamanté, mais on peut choisir, selon l'application envisagée, etest~d-dire selon la matière du mur à percer , aussi d'autres abrasifs, par exemple un abrasif à base de nitrure de bore cubique. These grinding wheel segments preferably have a diamond abrasive, but one can choose, depending on the application envisaged, and is ~ d ie depending on the material of the wall to be drilled, also other abrasives, for example an abrasive based on nitride of cubic boron.

Au centre du support 1, il est disposé une mèche de
tarière à goujon, conventionnelle pour la perforation de ro
ches, dont l'extrémité libre fait saillie au-delà des segments
de meule 2, selon une certaine distance a
La mèche 3 est maintenue,par une vis de serrage 6,
dans un alésage 5 d'un prolongement 4 du support 1. In the center of the support 1, a wick of
Stud auger, conventional for rock drilling
ches, the free end of which protrudes beyond the segments
grinding wheel 2, at a certain distance a
The wick 3 is held in place by a clamping screw 6,
in a bore 5 of an extension 4 of the support 1.

Le support 1 comporte à son extrémité arrière une plaque de fermeture 7, qui présente, dans l'exemple d'exécution illustré par le dessin, deux trous d'évacuation 8. The support 1 has at its rear end a closure plate 7 which, in the embodiment illustrated by the drawing, has two discharge holes 8.

Comme on le distingue bien à la figure 1, l'intervalle f , laissé libre entre les segments 2, est plus grand que la longueur 1 de ces segments. As can be clearly seen in FIG. 1, the interval f, left free between the segments 2, is greater than the length 1 of these segments.

Les grains abrasifs sont fixés de manière conventionnelle dans les segments 2, par exemple dans un liant métallique. The abrasive grains are fixed in a conventional manner in the segments 2, for example in a metallic binder.

Le foret creux ainsi constitué a été employé sur une perceuse à percussion, à un régime de 3000 t/mn environ, dans la position de travail, et avec une puissance motrice de 700
Watt.The hollow drill thus formed was used on an impact drill, at a speed of about 3000 rpm, in the working position, and with a motive power of 700
Watt.

Les résultats des essais ont été les suivants:
Du béton de bois (c'est-à-dire un mélange de particules de bois et d'un liant approprié), des cloisons de béton et de la brique rouge ont pu être perforés sans problèmes avee des taux taux-d'avanee élevés. C'est ainsi ue, par exemple, l'avan- ce était de 10 cm par minute pour la perforation du béton de bois.The results of the tests were as follows:
Wood concrete (i.e. a mixture of wood particles and a suitable binder), concrete partitions and red brick could be perforated without problems with high clearance rates . Thus, for example, the advance was 10 cm per minute for the perforation of wood concrete.

Evidemment, le taux d'avance était inférieur pour le béton massif. Obviously, the advance rate was lower for solid concrete.

Un autre avantage du foret creux conforme à l'invention en comparaison d'autres produits, à base de carbure de tungstène ou similaire, réside dans le fait que ce foret n'est pas endommagé quand il rencontre des armatures et qu'il a une vie utile sensiblement plus longue.  Another advantage of the hollow drill in accordance with the invention in comparison with other products, based on tungsten carbide or the like, resides in the fact that this drill is not damaged when it encounters reinforcements and that it has a significantly longer useful life.

Claims (5)

REVENDICATIONS segments de meule. grinding wheel segments. d'une mèche de tarière à goujon, qui fait saillie au-delà des an auger bit of stud, which protrudes beyond the du support cylindriquessun dispositif centreur sous forme of the cylindrical support a centering device in the form longueur d'un segment, et qu'il est prévu, selon l'axe central length of a segment, and that it is expected, along the central axis au moins aussi grande - et de préférence plus grande - que la at least as large - and preferably larger - than the de meule, mesurée dans le sens périphérique du support, est grinding wheel, measured in the peripheral direction of the support, is caractérisé en ce que le distance entre deux segments voisins characterized in that the distance between two neighboring segments meules diamantées, à une certaine distance les uns des autres, diamond grinding wheels, at a certain distance from each other, segments de meules en une matière abrasive, par exemple de grinding wheel segments made of an abrasive material, for example extremes d'un support métallique, cylindrique et creux, des extremes of a metallic support, cylindrical and hollow, Foret pour pratiquer des ouvertures dans des murs, ou similaires et dans lequel il est prévu, sur l'une des faces Drill for making openings in walls, or the like and in which it is provided, on one of the faces 2. Poret selon la revendication 1 , caractérisé en 2. Piglet according to claim 1, characterized in ce que ladite mèche est montée de manière échangeable sur le that said wick is exchangeably mounted on the support, par exemple en prévoyant que sa tige soit logée dans support, for example by providing that its rod is housed in un alésage d'un prolongement du support et maintenue par une a bore of an extension of the support and maintained by a vis de Serrage. clamping screw. 3. Foret selon la revendication 1 , caractérisé en 3. Drill according to claim 1, characterized in ce que le support est pourvu, à- son extrémité opposée aux. that the support is provided, at its end opposite to. trous d'évacuation. drainage holes. segments de meule, d'une plaque de fermeture présentant des grinding wheel segments, of a closure plate having 4. Foret selon la revendication 1, caractérisé en 4. Drill according to claim 1, characterized in ce que des trous d'évacuation sous forme de fentes sont pré that pre-slotted drainage holes are vus dans la paroi du support. seen in the wall of the support. 5. Foret selon la revendication 4, caractérisé en ce que les fentes d'évacuation sont orientées parallèlement  5. Drill according to claim 4, characterized in that the evacuation slots are oriented parallel à l'axe de rotation du support. to the axis of rotation of the support.
FR8017954A 1979-08-17 1980-08-14 Hollow drill bit for walls - has peripheral distance between grinder segments at least equal to segment length (OE 15.6.80) Pending FR2463655A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT557479A AT360734B (en) 1979-08-17 1979-08-17 HOLLOW DRILL

Publications (1)

Publication Number Publication Date
FR2463655A1 true FR2463655A1 (en) 1981-02-27

Family

ID=3577296

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8017954A Pending FR2463655A1 (en) 1979-08-17 1980-08-14 Hollow drill bit for walls - has peripheral distance between grinder segments at least equal to segment length (OE 15.6.80)

Country Status (6)

Country Link
AT (1) AT360734B (en)
BE (1) BE884775A (en)
DE (2) DE7929448U1 (en)
FR (1) FR2463655A1 (en)
NL (1) NL8004519A (en)
SE (1) SE8005697L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1027630C2 (en) * 2004-11-30 2006-05-31 Interdiam B V Drill device for trepanning, has shaft made from preferably fiber reinforced plastic
CN112198034A (en) * 2020-11-26 2021-01-08 辽宁工程技术大学 Weak cementation soft rock hollow cylinder sample preparation device and preparation method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3418723A1 (en) * 1984-05-19 1985-11-21 Hawera Probst Gmbh + Co, 7980 Ravensburg Adaptor for hammer drilling machines
DE3809428A1 (en) * 1988-03-21 1989-10-12 Hilti Ag STONE DRILL BIT
EP0477253B1 (en) * 1989-06-14 1993-08-11 Tyrolit Schleifmittelwerke Swarovski KG Hollow drill
DE9309536U1 (en) * 1993-06-26 1993-09-02 Cedima Diamantwerkzeug Masch Diamond dry core bit with center drill
US5868125A (en) * 1996-11-21 1999-02-09 Norton Company Crenelated abrasive tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427085A (en) * 1946-05-07 1947-09-09 Hugh V Allison Chuck and abrasive drill
DE1083172B (en) * 1956-03-06 1960-06-09 Winter & Sohn Ernst Tubular drill for glass and other hard materials
US3153885A (en) * 1961-10-09 1964-10-27 Chauncey A R Keller Cyclindrical cutter device
US4047828A (en) * 1976-03-31 1977-09-13 Makely Joseph E Core drill

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH185076A (en) * 1935-05-04 1936-07-15 Sauer Carl Core drill for masonry.
DE2238387A1 (en) * 1972-08-04 1974-03-28 Winter & Sohn Ernst MULTI-BLADE CUTTING TOOL

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427085A (en) * 1946-05-07 1947-09-09 Hugh V Allison Chuck and abrasive drill
DE1083172B (en) * 1956-03-06 1960-06-09 Winter & Sohn Ernst Tubular drill for glass and other hard materials
US3153885A (en) * 1961-10-09 1964-10-27 Chauncey A R Keller Cyclindrical cutter device
US4047828A (en) * 1976-03-31 1977-09-13 Makely Joseph E Core drill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1027630C2 (en) * 2004-11-30 2006-05-31 Interdiam B V Drill device for trepanning, has shaft made from preferably fiber reinforced plastic
CN112198034A (en) * 2020-11-26 2021-01-08 辽宁工程技术大学 Weak cementation soft rock hollow cylinder sample preparation device and preparation method

Also Published As

Publication number Publication date
SE8005697L (en) 1981-02-18
AT360734B (en) 1981-01-26
BE884775A (en) 1980-12-01
NL8004519A (en) 1981-02-19
DE7929448U1 (en) 1980-01-17
ATA557479A (en) 1980-06-15
DE3029101A1 (en) 1981-03-26

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