FR2640313A1 - Boring bit with a milling cutter with spiral-shaped reciprocating movement - Google Patents

Boring bit with a milling cutter with spiral-shaped reciprocating movement Download PDF

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Publication number
FR2640313A1
FR2640313A1 FR8816714A FR8816714A FR2640313A1 FR 2640313 A1 FR2640313 A1 FR 2640313A1 FR 8816714 A FR8816714 A FR 8816714A FR 8816714 A FR8816714 A FR 8816714A FR 2640313 A1 FR2640313 A1 FR 2640313A1
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France
Prior art keywords
pinion
teeth
cone
shaft
cutter
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FR8816714A
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French (fr)
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FR2640313B1 (en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/006—Mechanical motion converting means, e.g. reduction gearings
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/12—Roller bits with discs cutters
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/003—Drilling with mechanical conveying means
    • E21B7/005—Drilling with mechanical conveying means with helical conveying means

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

A boring bit consisting of a bevel gear c secured to the ground (by t and f) and of a milling cutter of slight thickness a rotating about it by rising and falling, mills out the cylinder of ground from the centre to the periphery and returns to the centre without stopping, with a very small section of attack (the teeth of the milling cutter and not the entire radius of the cylinder). The shaft b on which the milling cutter/pinion is freely mounted is articulated at the top to the plate r moved by the gearings g + i and l + m, and at the bottom, with off-centring, on the central spindle moved at a slightly lower speed by g + i and j + k so that it is inclined towards the left when the pinion rises and then towards the right when it falls, with rapid passage again to the lefthand inclination by virtue of a cam s which disengages l. The cone c consists of two symmetric tooth spirals, one rising, the other falling, without interference of teeth and gaps. Use for boring to small and medium depths in sedimentary ground.

Description

TREPAN DE FORAGE AVEC FRAIS~ A IUVE'jT DE V:-ET-VIsNT EN SPIRALE
Préambule. Une tête de tarière de forage dont le pignon-fraise descend et monte en spirale automatiquement sans fin, permet de fraiser les terrains sédimentaires, et non de les broyer et écraser comme pour un trépan normal, avec une section d'attaque de l'outil réduite à la section des dents de la petite fraise, alors que pour un trépan normal ctest au minimum le rayon du trou qui est section d'attaque, ce qui réduit d'autant la puissance nécessaire à léntratnement de l'outil ainsi que son poids ou dispositif faisant office de point d'appuit.Quand la fraise est en position basse le diamètre de l'outil est inférieur à celui du trou foré et de son tubage, et peut ainsi être retiré sans autre dispositif spécifique. En terrains meubles, le matériau est pour une bonne part chassé vers le haut latéralement à la fraise ce qui permet une haute vitesse de pénétration et laisse intact de gros fragments de matériau fossilifère, par ailleurs la force de point d'appuit devient si faible que l'outil peut devenir autonome, composé seulement du trépan, du moteur électrique et batteries, et dtune queuetarière de façon à réaliser une taupe télécommandée capable de changements de direction, notamment de vertical à horizontal.DRILL BIT WITH FRESH ~ A IUVE'jT V: -ET-VIsNT IN SPIRAL
Preamble. A drilling auger head with a milling cutter automatically descends and spirals endlessly, allows milling of sedimentary soils, not grinding and crushing them like a normal drill bit, with a tool attack section reduced to the section of the teeth of the small milling cutter, whereas for a normal drill bit it is at least the radius of the hole which is the attack section, which reduces the power necessary for the drive of the tool as well as its weight or device acting as a support point. When the cutter is in the low position, the diameter of the tool is less than that of the drilled hole and its casing, and can thus be removed without any other specific device. In soft ground, the material is largely driven upwards laterally with a milling cutter which allows a high speed of penetration and leaves intact large fragments of fossiliferous material, moreover the force of the point of contact becomes so weak that the tool can become autonomous, composed only of the drill bit, the electric motor and batteries, and a tail quarry so as to produce a remote-controlled mole capable of changing direction, in particular from vertical to horizontal.

Description. Le pignon-fraise a est monté fou sur l'arbre0, parallele au flanc du cane 0 . Cet arbre tourne autour du cône, relativement fixe puisque solidaire du terrain par les ailettes i), par l'intermédiaire du pont-porte engrenages et du cylindre de carossage 0 du système de transmission (cf. fig. 1 et 3). Le cône est constitué de deux spirales dentées, l'une mor.tante l'autre descendante, qui se croisent sans interférences de dents ou d'intervalles grâce au choix de leurs nombres et dimensions (cf. fig.2). Les dents sont inscrites en creux dans la matrice du cône et leur forme est à double biseau concave de façon à guider le glissement latéral du pignon-fraise sur son axe, pignon dont les dents sont de forme inverse (à double biseau convexe).La petitesse du cône et donc la forte valeur angulaire des spirales, oblige à faire varier l'angle de l'arbre par décentrement de son pied, de environ -26 pour la situation du pignon en bas du cône et en phase acendante, jusqu'à zéro en haut du cône puis jusqu'à +26 en descente avec changement brusque à de nouveau -26 pour remonter une nouvelle fois. Pour obtenir ce balancement, un engrenage G , vissé sur le train de tubes d'entratnement h , multiplie la vitesse de celui-çi par quatre par i'intermédiaire de l'engrenage en position fixe i. et du couple d'engrenages
l+m actionnant ainsi le plateau Dr auquel est articulé , au niveau du grand diamètre du cône, le haut de l'arbre porte-pignon, à la vitesse que nous noterons V.Le bas de l'arbre est articulé avec décentrement à l'axe tournant au centre du c8ne, mû par d'autres engrenages ( g+i et j+k ) à la vitesse V-e/n, n étant le nombre de révolutions du pignon-fraise nécessaires au parcours des deux spirales. On a donc un décalage angulaire du pied de l'arbre par rapport à sa tête de -e/2 quand le pignon-fraise commence sa montée, à zéro en haut du c8ne et e/2 à l'arrivée de nouveau en bas du cône; à ce point une came Qs débraye l'engrenage l de son moyeu à sept cannelures triangulaires su o Le haut de l'arbre ainsi débrayé est freiné par le terrain(ou est mû par un ressort) jusqu'à la butée de départ g , le bas de l'arbre continuant à tourner, permettant ainsi de retrouver l'inclinaison de -e/2 de départ.Description. The pinion-cutter is mounted idly on the shaft 0, parallel to the side of the cane 0. This shaft rotates around the cone, which is relatively fixed since it is secured to the ground by the fins i), via the gear carrier bridge and the camber cylinder 0 of the transmission system (see fig. 1 and 3). The cone consists of two toothed spirals, one mor.tante the other descending, which intersect without interference of teeth or intervals thanks to the choice of their numbers and dimensions (see fig. 2). The teeth are recessed in the matrix of the cone and their shape is with a double concave bevel so as to guide the lateral sliding of the strawberry pinion on its axis, pinion whose teeth are of reverse shape (double convex bevel). smallness of the cone and therefore the high angular value of the spirals, means that the angle of the shaft must be varied by off-centering of its foot, from about -26 for the situation of the pinion at the bottom of the cone and in the ascending phase, up zero at the top of the cone then up to +26 downhill with abrupt change to again -26 to go up again. To obtain this balancing, a gear G, screwed onto the train of drive tubes h, multiplies the speed of this one by four by means of the gear in the fixed position i. and the couple of gears
l + m thus actuating the plate Dr to which is articulated, at the level of the large diameter of the cone, the top of the pinion-carrying shaft, at the speed which we will denote V. The bottom of the shaft is articulated with offset at l 'axis rotating in the center of the chain, moved by other gears (g + i and j + k) at the speed Ve / n, n being the number of revolutions of the pinion-cutter necessary for the course of the two spirals. There is therefore an angular offset of the foot of the shaft relative to its head of -e / 2 when the pinion-cutter begins its rise, at zero at the top of the c8ne and e / 2 on arrival again at the bottom of the cone; at this point a cam Qs disengages the gear l from its hub with seven triangular grooves su o The top of the shaft thus disengaged is braked by the ground (or is moved by a spring) until the starting stop g, the bottom of the shaft continuing to rotate, thus making it possible to find the inclination of -e / 2 at the start.

La figure 1 représente la coupe du trépan; la figure 3 son plan au niveau du système de transmission et débrayage (les engrenages représentés sont du nombre de dents suivant: 28 pour j , 27 pour X , 14 pour k et Qm ); la figure 4 représente le pied et la partie médiane de l'arbre mobile autour du cône.Figure 1 shows the section of the drill bit; Figure 3 its plan at the transmission and declutching system (the gears shown are of the following number of teeth: 28 for j, 27 for X, 14 for k and Qm); Figure 4 shows the foot and the middle part of the movable shaft around the cone.

La figure 2 représente la projection sur un plan du cane au niveau du diamètre de pied. Les losanges bisautés I représentent l'empreinte des têtes des dents du pigon fraise. Les dents 2 sont prises dans la masse t du cane. Figure 2 shows the projection on a plane of the cane at the foot diameter. The bevelled diamonds I represent the imprint of the heads of the teeth of the strawberry pig. The teeth 2 are taken from the mass t of the cane.

Claims (2)

Revendications.Claims. 1 - Un trépan de forage destiné à fraiser les terrains sédimentaires avec un pignon-fraise tournant en spirale alternativement montante et descendante, sans fin, de façon à travailler l'espace d'un cylindre de terrain avec un outil de section très réduite (dents du petit pignon-fraise), est caractérisé en ce qu'il comporte un pignon-fraise a monté fou sur un arbre b qui tourne autour d'un engrenage conique relativement solidaire du terrain c .Cet arbre est articulé en haut (au niveau du grand diamètre du c8ne) sur un plateau mû par des engrenages (6g+Q9 et a ) à une vitesse V, et en bas, avec décentrement, sur l'axe tournant au centre du cône, mû par d'autres engre nages ( g+i et j+k ) à la vitesse V- e/n , n étant le nombre de révolutions du pignon-fraise nécessaires au parcours des deux spirales.On a donc un décalage angulaire du pied de l'arbre par rapport à sa tête de -e/2 -quand le pignon-fraise commence sa montée, à zéro en haut du cône et e/2 à l'arrivée de nouveau en bas du cône; à ce point une came s débraye l'engrenage l/o d'entraînement du 7zuut de l'arbre tandis que le bas de l'arbre tourne toujours, permettant de retrouver l'inclinaison de -e/2 de départ, contrôlée par une butée t. 1 - A drill bit intended to mill the sedimentary grounds with a pinion-cutter rotating in spiral alternately rising and falling, without end, so as to work the space of a ground cylinder with a tool of very reduced section (teeth of the small pinion-cutter), is characterized in that it comprises a pinion-cutter mounted idly on a shaft b which rotates around a bevel gear relatively integral with the ground c. This shaft is articulated at the top (at the level of the large diameter of the c8ne) on a plate moved by gears (6g + Q9 and a) at a speed V, and below, with offset, on the axis rotating in the center of the cone, moved by other gears (g + i and j + k) at speed V- e / n, n being the number of revolutions of the pinion-cutter necessary for the path of the two spirals. We therefore have an angular offset of the foot of the tree relative to its head from -e / 2 -when the strawberry pinion begins its rise, at zero at the top of the cone and e / 2 at the rear riveted again down the cone; at this point a cam s disengages the gear l / o driving the 7zuut of the shaft while the bottom of the shaft is still rotating, allowing to find the inclination of -e / 2 at the start, controlled by a stop t. 2 - Un trépan de forage à pignon-fraise tournant en spirale alternativement montante et descendante sans fin, est caractérisé en ce qutil comporte un engrenage coniquc central dont la fonction est de guider le pignon satellite dans un mouvement de montée et descente en spirale, et qui se compose de deux spirales dentées symétriques, l'une montante, l'autre descendante, reliées en cercle aux deux extrémités du cane, se croisant sans interférences de dents et d'intervalles grâce au choix de leurs nombres et dimensions de dents. Les dents du cône sont prises dans la masse et sont de forme femelle (double biseau concave) par rapport aux dents miles du pignon (double biseau convexe). 2 - A drill bit with pinion-cutter rotating in a spiral alternately rising and falling without end, is characterized in that it comprises a central bevel gear whose function is to guide the satellite pinion in an up and down spiral movement, and which consists of two symmetrical toothed spirals, one rising, the other descending, connected in a circle at the two ends of the cane, crossing without interference of teeth and intervals thanks to the choice of their numbers and dimensions of teeth. The teeth of the cone are taken in the mass and are of female form (double concave bevel) with respect to the teeth miles of the pinion (double convex bevel).
FR8816714A 1988-12-14 1988-12-14 DRILL BIT WITH SPIRAL COMBINATION MILL Expired - Lifetime FR2640313B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8816714A FR2640313B1 (en) 1988-12-14 1988-12-14 DRILL BIT WITH SPIRAL COMBINATION MILL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8816714A FR2640313B1 (en) 1988-12-14 1988-12-14 DRILL BIT WITH SPIRAL COMBINATION MILL

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FR2640313A1 true FR2640313A1 (en) 1990-06-15
FR2640313B1 FR2640313B1 (en) 1991-04-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999034085A1 (en) * 1997-12-29 1999-07-08 Stefano Tongiani Combined rotation drill
CN115162953A (en) * 2022-09-07 2022-10-11 山东省煤田地质局物探测量队 Perforating device for geological exploration

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1391626A (en) * 1920-04-27 1921-09-20 Richard J Bequette Drill-head for well-driling apparatus
US1778966A (en) * 1927-09-06 1930-10-21 Reed Roller Bit Co Roller bit
US2894727A (en) * 1955-05-17 1959-07-14 Homer I Henderson Drilling bit
US3235016A (en) * 1963-12-23 1966-02-15 George C Dennis Auger with travelling cutter
DE2458295A1 (en) * 1974-12-10 1976-06-16 Ruhrkohle Ag Coal seam drill with several spindles - outer heads have angled cutter discs peripheral on head to reduce wear
GB2028897A (en) * 1978-08-26 1980-03-12 Paurat F Equipment for the sinking of shafts
EP0050954A1 (en) * 1980-10-23 1982-05-05 Cementation Research Limited Boring tools

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1391626A (en) * 1920-04-27 1921-09-20 Richard J Bequette Drill-head for well-driling apparatus
US1778966A (en) * 1927-09-06 1930-10-21 Reed Roller Bit Co Roller bit
US2894727A (en) * 1955-05-17 1959-07-14 Homer I Henderson Drilling bit
US3235016A (en) * 1963-12-23 1966-02-15 George C Dennis Auger with travelling cutter
DE2458295A1 (en) * 1974-12-10 1976-06-16 Ruhrkohle Ag Coal seam drill with several spindles - outer heads have angled cutter discs peripheral on head to reduce wear
GB2028897A (en) * 1978-08-26 1980-03-12 Paurat F Equipment for the sinking of shafts
EP0050954A1 (en) * 1980-10-23 1982-05-05 Cementation Research Limited Boring tools

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999034085A1 (en) * 1997-12-29 1999-07-08 Stefano Tongiani Combined rotation drill
CN115162953A (en) * 2022-09-07 2022-10-11 山东省煤田地质局物探测量队 Perforating device for geological exploration
CN115162953B (en) * 2022-09-07 2022-12-02 山东省煤田地质局物探测量队 Perforating device for geological exploration

Also Published As

Publication number Publication date
FR2640313B1 (en) 1991-04-05

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