WO2016027124A1 - Outil de perçage, appareil de perçage, kit et procédé de perçage d'un panneau en matériau composite et/ou en aluminium - Google Patents

Outil de perçage, appareil de perçage, kit et procédé de perçage d'un panneau en matériau composite et/ou en aluminium Download PDF

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Publication number
WO2016027124A1
WO2016027124A1 PCT/IB2014/063952 IB2014063952W WO2016027124A1 WO 2016027124 A1 WO2016027124 A1 WO 2016027124A1 IB 2014063952 W IB2014063952 W IB 2014063952W WO 2016027124 A1 WO2016027124 A1 WO 2016027124A1
Authority
WO
WIPO (PCT)
Prior art keywords
drilling
tool
panel
apt
anyone
Prior art date
Application number
PCT/IB2014/063952
Other languages
English (en)
Inventor
Natalino Capone
Original Assignee
Natalino Capone
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 Natalino Capone filed Critical Natalino Capone
Priority to PCT/IB2014/063952 priority Critical patent/WO2016027124A1/fr
Publication of WO2016027124A1 publication Critical patent/WO2016027124A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • B23B51/108—Bits for countersinking having a centering drill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
    • B21J15/147—Composite articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
    • B21J15/50—Removing or cutting devices for rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
    • B23B49/003—Stops attached to drilling tools, tool holders or drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • B23B51/104—Bits for countersinking with stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/16—Perforating by tool or tools of the drill type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2215/00—Details of workpieces
    • B23B2215/04—Aircraft components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
    • B23B2222/04—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/27—Composites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/20—Number of cutting edges
    • B23B2251/202—Three cutting edges

Definitions

  • the present invention relates to a tool, device and method for drilling a panel made of composite material and/or aluminium, in particular a tool for drilling a packet comprising at least two panels coupled therebetween by means of temporary rivets (known as the trade name of Pop Rivet) and a method allowing to remove the rivets, to drill and to flare the panel/panels by means of a single procedure.
  • the processing procedure provides the need of proceeding with removing temporary coupling elements (such as for example the rivets commercially known with the name of "Pop Rivet"), positioned to couple semi-finished composite material products, to replace them with joints of permanent fixing means.
  • temporary coupling elements such as for example the rivets commercially known with the name of "Pop Rivet"
  • the described operation provides to perform at least three processing steps, that is a first step of removing the rivet by means of using a tool for drilling, a second step of finishing (under tolerance) the implemented hole until reaching the diameter requested by the processing cycle and a third step of flaring the implemented hole.
  • the processing steps include a plurality of tools (for example a first tool for removing the rivet, a second "widening” tool for finishing and a third "flaring” tool for flaring the hole) and related drills.
  • a plurality of tools for example a first tool for removing the rivet, a second "widening” tool for finishing and a third "flaring” tool for flaring the hole.
  • Such processing steps are currently performed by using at least two resources in parallel, a first one for the manual drilling procedures and a second one for the procedures to suck the chip and powder produced during the processing.
  • the need of sucking the chip in fact, does not allow a single operator to have processing autonomy, therefore the production costs must provide at least two resources for implementing the processing.
  • the known art involves a series of disadvantages, further having a high percentage of processing defects.
  • the known processing processes produce a percentage of defects of about 60%.
  • An additional defect is characterized by the out-of-tolerance sizes of the implemented holes. Still an additional defect of the known art is the lack of coaxiality between the hole axis and the flare axis.
  • the technical problem placed and solved by the present invention is to provide a drilling tool, a drilling device and method allowing to obviate the drawbacks mentioned above with reference to the known art.
  • Such problem is solved by a drilling tool according to claim 1 and even, according to the same inventive concept, by a device according to claim 5 and by a drilling method according to claim 17.
  • the drilling tool according to a first preferred embodiment of the present invention allows completing the processing for removing a tacking, drilling and flaring rivet implemented in a single procedure.
  • the geometrical shape of the tool allows optimizing the sizes of the implemented hole which results to be without delaminations both at the inner walls and at the surfaces for inletting and outletting the tool from the panel(s). In this way, the need of having recourse to a high number of tools is reduced, with consequent economical and beneficial qualitative processing advantages.
  • the same geometrical shape of the tool according to the invention allows then, by means of drilling, to remove the connecting rivet and to drill and flare at the same time.
  • An advantage of the drilling device according to the preferred embodiment of the invention allows implementing a coaxial hole to a main reference axis of the device itself.
  • the hole is implemented with aeronautical tolerances and in a direction perpendicular to a reference surface of the panel to be processed.
  • An additional advantage of the invention according to the present invention lies in the possibility of adjusting the drilling depth.
  • the invention according to the present invention allows minimizing the production costs both by means of greatly reducing the processing defects and using a single resource which can complete the processing in full autonomy.
  • ⁇ figure 1 shows a side view of the drilling tool according to a preferred embodiment of the present invention
  • figure 1 a shows a top view of the tool of figure 1 ;
  • figure 1 b shows a sectional view l-l of figure 1 ;
  • ⁇ figure 1 c shows a sectional view K-K of figure 1 ;
  • ⁇ figure 2 shows a drilling device according to a preferred embodiment of the present invention
  • figure 3 shows an exploded view of figure 2
  • ⁇ figure 4 shows a longitudinal sectional view of the device of figure 2;
  • ⁇ figure 4a shows a partially sectional schematic view of a component of figure 2
  • ⁇ figure 5 is a partially sectioned side view of a detail of figure 2 in a use configuration
  • figure 6 shows the detail of figure 5 during a drilling procedure
  • figure 7 shows the detail of figure 5 during a flaring procedure
  • ⁇ figure 8 shows a perspective view of a sucking element which can be coupled to the device of figure 2;
  • ⁇ figure 9 shows a view of the device of figure 2 coupled to a sucking element
  • ⁇ figure 10a is a top perspective view of a detail of a coupling of panels through provisional connecting rivets;
  • ⁇ figure 10b is a bottom perspective view of the detail of figure 10a;
  • ⁇ figure 10c is a schematic view of a connection of known art;
  • ⁇ figures 1 1a and 11 b are related views of a flaring and drilling surface, respectively, obtained by means of tools of known art;
  • ⁇ figures 12a and 12b are related views of a flaring and drilling surface, respectively, obtained by means of the preferred embodiment according to the present invention.
  • figure 13 shows table 1 , as described below;
  • ⁇ figure 14 shows table 2, as described below.
  • the drilling tool 1 for drilling a panel in composite material and/or aluminium at a connecting element, has a coupling shank 29, in particular threaded outside, for engaging on a drilling device apt to drag the tool itself in rotation.
  • the tool 1 further has an elongated body integral to the coupling shank, said body having at a distal portion three helicoidal grooves developing longitudinally to define three main cutting edges for the panel drilling.
  • the main cutting edges have a lead angle (a) comprised in a range between 85° and 95°, allowing to guide the tip in the hole and facilitates to cut and then to remove (in particular the destruction by drilling) of the rivet (Pop Rivet).
  • the main cutting edges have a first front clearance angle (a) comprised in a range between 10° and 18°, a second front clearance angle (b) comprised in a range between 20° and 26° and a discharge angle (c) comprised in a range between 6° and 10°.
  • the main cutting edges have a rear clearance angle (d) comprised in a range between 12° and 16°.
  • d rear clearance angle
  • the geometry of the main cutting edges allows reducing the operator's effort in the drilling processing.
  • the whole shape of the tool 1 allows the removal of the connecting element and the drilling of the panel itself, by meeting the aeronautical tolerance requirements.
  • the core of the distal portion of the tool has a diameter comprised between about 25% and about 45% of the outer diameter of the cutting edges so as to resist to the stresses thereto it is subjected during processing and at the same time so as to leave the space necessary to receive and move away the chip and/or powder.
  • the main cutting edges develop along a right-hand helix. In this way advantageously it is possible moving away the chip and/or powder from the section under processing.
  • the main cutting edges develop longitudinally for a determined extension which depends upon the thickness of the material to be drilled, as far as meeting a flaring portion of the tool itself.
  • the flaring portion comprises additional three helicoidal grooves, an extension of the previous grooves, which develop longitudinally to define three secondary cutting edge apt to flare the panel.
  • the tool according to the invention allows obtaining a hole flare by means of the same tool used to remove the rivet for the temporary connection and the implementation of the hole itself.
  • the flare portion has a larger outer diameter of the tool than the distal portion comprising the primary cutting edges.
  • the secondary cutting edges have a hook angle (g) comprised in a range between 15° and 25°.
  • the secondary cutting edges have a radial clearance angle comprised in a range between 6° and 10° and, in particular, a tilting so as to implement the wished flaring angle ( ⁇ ), with a tolerance of about +/- 2°.
  • the helix angle ( ⁇ ), formed by the tangent to the helix itself and the main axis of symmetry (B) of the tool shown in figure 1 assumes a value preferably comprised in a range between 20° and 30° on the larger diameter of the tool.
  • the larger diameter run across too for a tract by the chip compartment, has in the solid section thereof a notch 23 implemented to receive the tool used for assembling the drilling tool on the shaft 2.
  • Such larger diameter restricts with a tilting of 120° as far as reaching a smaller diameter receiving a metric thread implemented for screwing the tool at an engagement for coupling with a drilling device apt to drag the tool itself into rotation, as it will be better described hereinafter.
  • the drilling device 7 preferably can be used in an apparatus for drilling a panel made of composite material and/or aluminium and in particular for drilling a plurality of panels made of composite material and/or aluminium coupled therebetween.
  • the drilling device 7 comprises a tool-holding shaft 2 having a first distal end 12 configured to be coupled to a drilling tool 1 , for example shown in figures 2, 3 and 4.
  • the first end 12 has a cylindrical seat threaded inside to receive the tool 1.
  • a second proximal end 22 of the tool-holding shaft 2 is configured to be engaged in the sleeve of a drill apt to drag into rotation the tool 1 according to a longitudinal axis (A) of the same tool-holding shaft 2.
  • the device 7 further has a substantially tubular spacing element 4, arranged or apt to be arranged coaxially circumscribed to the tool-holding shaft 2 so as to allow a sliding of the shaft itself within the spacing element 4.
  • the spacing element 4 has a distal end 14 apt to abut on the panel to be drilled.
  • the device allows to obtain a drilling of the panel substantially coaxial to said longitudinal axis (A) of said tool-holding shaft.
  • the distal end 14 has a substantially circular surface lying along a plane perpendicular to the longitudinal axis (A) of the shaft 2. In such way, by bringing the distal end 14 to abut with the surface of the panel to be drilled, the condition of perpendicularity is maintained between the surface to be processed and the axis of the tool 1 guided by the shaft 2 during processing, thus allowing to obtain a hole perpendicular to the panel surface.
  • the use of the device 7 allows performing a removal of the element and a drilling of the panel according to the main direction of the longitudinal axis (A) of the shaft 2, that is perpendicular to the surface.
  • the device 7 allows recovering each marginal error and obtaining a finished hole perpendicular to the panel surface.
  • the distal end 14 has an enlargement for example having a larger outer diameter than the average diameter of the tubular spacing element 4, so as to increase the surface abutting with the panel and to guarantee a stable positioning of the device during the drilling procedure.
  • the distal end is shaped to have at least three ends apt to operate from resting points on the panel surface to guarantee a stable positioning of the device during the drilling procedure.
  • the spacing element 4 has an inner sliding compartment, inside thereof the tool-holding shaft slides 2, defined between the distal end 14 and a substantially abutment inner edge of the element 4 apt to stop the sliding of the shaft 2.
  • the first end 12 of the shaft 2 and the tool 7 are made to slide from the abutment edge of the sliding compartment to a maximum sliding position located outside the spacing element 4 and defined by the stroke of the device itself, that is by the extension of the shaft 2 as it will be better described hereinafter.
  • the drilling depth of the device depends upon the extension of the spacing device 4, as as said above the point of the drilling tool 1 interacts with the panel to be processed only once it has come out from the distal end 14 of the device 4.
  • adjusting means 5, 6, 8, 9, are provided, coupled outside or which can be coupled to the spacing element 4 to adjust a related positioning thereof with respect to the shaft 2 and to the drilling tool 1 and to allow an adjustment of the drilling depth under a condition of using the device 7 itself.
  • the spacing element 4 has a threaded-inside substantially tubular proximal end 24 apt to be coupled with the above-mentioned adjusting means.
  • the adjusting means comprises a tubular union element 5 having a first threaded-outside portion 15 apt to be coupled or which can be coupled to the proximal end 24 of the spacing element 4.
  • the adjusting means further comprises adjusting means, for example a bushing 6, apt indeed to adjust the related positioning between the spacing element 4 and the union element as mentioned above.
  • the adjusting bushing 6 has interference means, in particular a plurality of teeth 21 implemented on an inner surface apt to interfere with an outer surface of the proximal end 24 to fix the related position of the spacing element with respect to the bushing itself 6.
  • the proximal end 24 has outside an abutment edge 31 having a substantially hexagonal profile so as to allow an interference between the edges themselves of the hexagonal profile and the teeth 21 implemented on the adjusting bushing.
  • the inner surface of the adjusting bushing 6 is shaped so as to have abutment surfaces for containing an elastic element, for example a spring 50, and a wedge 41 apt to be inserted in a track 40 provided on a second portion 25, threaded outside, of the tubular union 5 and positioned to guide the adjusting bushing 6 with respect to the union itself.
  • an elastic element for example a spring 50
  • a wedge 41 apt to be inserted in a track 40 provided on a second portion 25, threaded outside, of the tubular union 5 and positioned to guide the adjusting bushing 6 with respect to the union itself.
  • a reference element for example a notch, made on the outer surface of the spacing element 4 which in an assembling configuration results to be aligned to one of the above-mentioned engravings. Therefore, starting from a determined position of the spacing element, by shifting the alignment of the notch on the spacing element with the engraving obtained on the adjusting bushing 6 adjacent to the current one, an advancement or a withdrawal of the spacing element 4 itself equal to 1/30 of the thread pitch, according to the rotation direction, is obtained.
  • the adjusting bushing provides a knurling on an outer surface portion, to ease gripping and moving.
  • the adjusting means further comprises a fastening tubular element, for example an ring nut, 8 threaded inside and apt to be at least partially keyed on the second portion 25.
  • the fastening ring nut 8 has at least two different inner diameters, a first cylindrical tract with larger diameter is able to receive an end of the adjusting bushing, the other one instead with smaller diameter has a smooth tract adjacent to the cylindrical thickness with larger diameter and a left-hand thread. The latter thread allows to screw the bushing on the second portion 25 of the union element 5.
  • the fastening ring nut 8 provides a knurling on an outer surface portion, to ease gripping and screwing.
  • the first 15 and second portion 25 of the union element 5 have outer diameters different therebetween thereon metric threads are implemented, thereon as mentioned above spacing element 4 and the fastening ring nut 8, respectively, are screwed.
  • the two threads are the right one and the left one for functional reasons, as the mutual position of the elements keyed on the union 5 must be fastened.
  • the portion 15 has inside radial bearings to decrease the friction of the shaft 2 during the rotation and the translation of the shaft itself and an oil seal to protect the mechanism from the processing residues of the tool.
  • the portion 25 is shaped inside to have a cylindrical section and include inside thereof an axial bearing positioned at a distal end of the portion 25 apt to reduce the friction during the rotation and the translation of the shaft 2.
  • the axial bearing further acts as abutment and stopping surface for a forward motion of the shaft during the operation of the device, as it will be better described hereinafter.
  • the adjusting bushing 6 is positioned between the spacing element 4 and the fastening ring nut 8.
  • the bushing 6 extends along the portion 15 with smaller diameter, thereon the spacing element is screwed 4, and along a portion of the tract with larger diameter thereon the track 40 receiving the guiding wedge 41 has been implemented.
  • the spring 50 received in the bushing 6 is compressed. Considering the elastic constant of the spring, then a force is produced pushing the adjusting bushing 6 in abutment with the spacing element 4.
  • the fastening ring nut 8 is screwed towards the proximal end of the device itself on the union 5 portion 25 so as to lock the bushing 6 with the spacing element 4.
  • the adjusting means further comprises a tubular element, for example a guiding bushing, 9 apt to slide inside the portion 25 to direct a related sliding of the tool-holding shaft 2 with respect to the spacing element 4.
  • a tubular element for example a guiding bushing, 9 apt to slide inside the portion 25 to direct a related sliding of the tool-holding shaft 2 with respect to the spacing element 4.
  • the guiding bushing 9 at an ending contour has an abutment surface for a stopping element 19 of the adjusting means.
  • the stopping element 19 in particular is a stopping ring made of elastic steel, for example a ring known with the trade name of Seeger, apt to be fastened in a notch or throat 44 obtained on the shaft 2, preferably in proximity of the first end 12.
  • the guiding bushing 9 is shaped inside to have two cylindrical portions with different diameter.
  • a first portion with larger diameter receives an additional elastic element 51 , for example a spring, needed to bring back the shaft 2 and the guiding bushing 9 to the starting stroke position by pushing the guiding bushing against the stopping element 19, thus keeping the mutual position of the shaft with respect to the guiding bushing 9.
  • a second cylindrical portion with smaller diameter instead acts as guide to the shaft.
  • the spacing element has openings, in particular slots 60 on the side surface of the sliding compartment so as to allow the chip and the powders to go out in a processing step.
  • the device 70 according to the present invention further comprises a conveying element 20 shaped to be coupled with the side surface and allow to suck the waste material at the openings 60 during a processing step.
  • the conveying element has a tubular element apt to be connected to a sucking device at a first end. At a second end the tubular element is connected to a surface shaped to be coupled, in particular in a tight way, to an outer surface of the sliding compartment so as to position the end of the sucking tubular element at at least one of the openings.
  • kit comprising a device 7, 70 and one or more drilling tools 1 , each tool being sized to process on a predetermined material and/or thickness of panels coupled therebetween.
  • the drilling tool 1 is screwed onto the shaft 2, at the end 12 having an inner metric thread implemented to receive the threaded stem of the tool as far as the abutment of the tilted surface.
  • the shaft 2, the threaded end thereof is positioned inside the spacing device, crosses the whole device for the whole length, as far as the opposite end wherein it is fastened, by means of the stopping ring, to the guiding bushing.
  • the wished drilling depth is adjusted by adjusting the related positioning of the spacing element 4 with respect to the tool-holding shaft 2.
  • the setup position of the device 7 it is clamped on a manual drill (Hand Tool) to perform the drilling.
  • a manual drill Hand Tool
  • the head of the tool is cantered in the riveted hole
  • the base of the spacing element is rested on the surface to be drilled so as to obtain the perpendicularity between the axis of the tool and the so-called surfaces and then the drilling is performed.
  • the drilling method according to the present invention allows performing the steps for removing a connecting element, drilling under tolerance and flaring the hole by means of a single processing, as shown in figures 5 to 7, and complying with the aeronautical tolerance requirements.
  • Such feature allows then to decrease the processing and maintenance costs of the tools.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

L'invention concerne un outil de perçage (1), un appareil de perçage et un procédé de perçage d'un panneau en matériau composite et/ou en aluminium, conçus pour permettre d'enlever un rivet de raccord, puis de percer et d'évaser un trou dans le panneau en une seule opération.
PCT/IB2014/063952 2014-08-18 2014-08-18 Outil de perçage, appareil de perçage, kit et procédé de perçage d'un panneau en matériau composite et/ou en aluminium WO2016027124A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2014/063952 WO2016027124A1 (fr) 2014-08-18 2014-08-18 Outil de perçage, appareil de perçage, kit et procédé de perçage d'un panneau en matériau composite et/ou en aluminium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2014/063952 WO2016027124A1 (fr) 2014-08-18 2014-08-18 Outil de perçage, appareil de perçage, kit et procédé de perçage d'un panneau en matériau composite et/ou en aluminium

Publications (1)

Publication Number Publication Date
WO2016027124A1 true WO2016027124A1 (fr) 2016-02-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/063952 WO2016027124A1 (fr) 2014-08-18 2014-08-18 Outil de perçage, appareil de perçage, kit et procédé de perçage d'un panneau en matériau composite et/ou en aluminium

Country Status (1)

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WO (1) WO2016027124A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060772A (en) * 1960-03-07 1962-10-30 Aircraft Tools Inc Countersink tool and control means
US5096342A (en) * 1990-12-24 1992-03-17 Mcdonnell Douglas Corporation Apparatus for drilling composite structures
EP2202018A1 (fr) * 2008-12-26 2010-06-30 Fuji Jukogyo Kabushiki Kaisha Foret
US20130039709A1 (en) * 2010-04-27 2013-02-14 Sandvik Intellectual Property Ab Twist drill for advanced materials
CA2851873A1 (fr) * 2011-10-13 2013-04-18 Premium Aerotec Gmbh Dispositif et procede permettant de realiser une pluralite de rivetages le long de la surface d'une piece
DE202013101404U1 (de) * 2013-04-02 2013-04-26 Georg Pirthauer Bohrwerkzeug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060772A (en) * 1960-03-07 1962-10-30 Aircraft Tools Inc Countersink tool and control means
US5096342A (en) * 1990-12-24 1992-03-17 Mcdonnell Douglas Corporation Apparatus for drilling composite structures
EP2202018A1 (fr) * 2008-12-26 2010-06-30 Fuji Jukogyo Kabushiki Kaisha Foret
US20130039709A1 (en) * 2010-04-27 2013-02-14 Sandvik Intellectual Property Ab Twist drill for advanced materials
CA2851873A1 (fr) * 2011-10-13 2013-04-18 Premium Aerotec Gmbh Dispositif et procede permettant de realiser une pluralite de rivetages le long de la surface d'une piece
DE202013101404U1 (de) * 2013-04-02 2013-04-26 Georg Pirthauer Bohrwerkzeug

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