EP0006814A2 - Nietapparat mit einer Hohlsprengladung - Google Patents

Nietapparat mit einer Hohlsprengladung Download PDF

Info

Publication number
EP0006814A2
EP0006814A2 EP79400434A EP79400434A EP0006814A2 EP 0006814 A2 EP0006814 A2 EP 0006814A2 EP 79400434 A EP79400434 A EP 79400434A EP 79400434 A EP79400434 A EP 79400434A EP 0006814 A2 EP0006814 A2 EP 0006814A2
Authority
EP
European Patent Office
Prior art keywords
hollow charge
nail
coating
charge
hollow
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.)
Granted
Application number
EP79400434A
Other languages
English (en)
French (fr)
Other versions
EP0006814A3 (en
EP0006814B1 (de
Inventor
Jean-Claude Arnaison
Jean-Claude Lacote
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.)
Direction General de lArmement DGA
Gouvernement de la Republique Francaise
Original Assignee
Delegation Generale pour lArmement
Gouvernement de la Republique Francaise
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 Delegation Generale pour lArmement, Gouvernement de la Republique Francaise filed Critical Delegation Generale pour lArmement
Publication of EP0006814A2 publication Critical patent/EP0006814A2/de
Publication of EP0006814A3 publication Critical patent/EP0006814A3/fr
Application granted granted Critical
Publication of EP0006814B1 publication Critical patent/EP0006814B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D3/00—Particular applications of blasting techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure

Definitions

  • the invention relates to a riveting device, intended to fix a first element to a second element made of hard metal.
  • the device according to the invention is intended to ap- p lications both civilian (mounting steel structures, shipbuilding, etc %) and military (tanks frame assembly, attaching a parasitic element such that a mine under the belly of an armored vehicle as it passes, etc ).
  • the fixing operation must be rapid and efficient and its effect must be lasting. The speed of this operation is linked to economic imperatives in the civil applications of the device and in some of its military applications (tank construction, for example); it is made essential by the mobility of the lens when it comes to fixing a parasitic element under the belly of an armored vehicle.
  • the invention aims to provide a riveting device which not only has the qualities set out above (speed, efficiency, durability), but also which is simple, reliable and economically acceptable.
  • the device comprises a support which is common to the element to be fixed and to a hollow charge and a metal nail or rivet which is embedded in the loading of the hollow charge , in the axis of the coating thereof, the support comprising a surface intended to be applied on the hard metal element and approximately centered on the focal point of the shaped charge.
  • the coating of the hollow charge is made of a material capable of ensuring the brazing of the nail inside the hole drilled in the element of hard metal by the hollow charge. The binding is thus made more resistant.
  • the nail is directly secured to the coating of the hollow charge, for example being made in one piece with this coating. This facilitates the mounting of the nail in the axis of the coating during the manufacture of the device, and consequently in the axis of the hole which will be drilled in the element of hard metal by the hollow charge.
  • the riveting device which is intended to fix a first element 1 to a second element 2 made of hard metal, comprises a support 3 which is common to the element to fix 1 and to a hollow charge 4; and a metal nail or rivet 5 which is embedded in the charge of the hollow charge 4, in the axis XX of the coating 6 of this charge hollow 4, the support 3 comprising a surface 7 intended to be applied to the hard metal element 2 and approximately centered on the focal point F of the hollow charge 4.
  • the angle at the top has a value between 40 and 70 °, range of existence of a pure hollow charge.
  • the coating 6 is made of a material capable of generating the formation of a jet of hollow charge (copper for example) and preferably capable of adding a brazing effect to the studding effect (Cu-Ag alloy for example) and thus perfect the attachment.
  • the nail 5 consists of a rod 5a, the diameter of which is approximately equal to a quarter of the diameter of the covering 6 and the length of which is approximately equal to six times the diameter of the rod 5a.
  • the nail 5 On the side opposite to the coating 6, the nail 5 has a head 5b whose diameter is approximately equal to half that of the coating 6 and a length equal to approximately 3/4 of the diameter of the coating, these dimensions being given mainly by way of 'example.
  • the nail 5 is made of a steel with very good mechanical characteristics, for example of the 45 SDC 6h type (steel at 0.45% of C, containing a defined percentage of Si, Mo and Cr). For a load 4 whose diameter is between 8 and 10 mm for example, the nail 5 is located 2 to 3 mm behind the top of the coating 6.
  • the steel of the nail 5 has undergone a heat treatment (quenching and tempering) ensuring the best possible compromise between hardness and impact resistance.
  • the loading of the hollow charge 4 is carried out in two parts 8 and 9, contained in a body 10 of material, organic or mineral, capable of absorbing the effects of shock.
  • the first part 8, made of a powerful explosive, is produced either by casting or by compression on the coating 6 directly in the body 10, so as to save the location of the rod 5a of the nail 5 or by release, either using a shape punch.
  • the second part 9 of the load is placed around the head 5b of the nail 5, using the same method as for the first part 8.
  • the load may include a intermediate layer 11, of a different nature, intended to reinforce in a known manner the detonation wave.
  • the initiation of the hollow charge 4 is carried out by a secondary initiating explosive tablet 12 housed in the body 10 and initiated by the enhancer 13 of a detonating transmission cord 14, itself connected to a system of central ignition 15 which includes an ignition security.
  • this system 15 has been shown in FIG. 1 as being carried by the element to be fixed 1; it is separated from it when the latter consists of a parasitic element to be fixed under the belly of an armored vehicle, as it passes.
  • the support 3 is made integral with the element 1, for example by pinning, and the body 10 of the hollow charge 4 in a manner which will be described in more detail below. It is made of a steel with very good mechanical characteristics, for example of the 25 CD 4.5 type (steel at 0.25% of C, containing a defined percentage of Cr and Mo).
  • the support 3 is adapted, preferably by welding, to a metal ring 16 provided with a central hole 17.
  • This hole 17 the axis of which coincides with the axis XX of the hollow charge 4, has a slightly greater diameter to that of the rod 5a of the nail 5 and in any case less than the diameter of the head 5b of this nail.
  • this hole 17 opens out to leave sufficient free space for the hollow charge 4.
  • the ring 16 is sealingly adapted to one of the axial ends of the body 10, the other end of which is hermetically closed by the end 18, forming a plug, of the cord 14.
  • a part 19, comprising the above-mentioned surface 7, is fixed to the ring 16 to complete the closing of the device forwards.
  • the part 19 is made of shock absorbing material (annealed copper, for example) so as to serve as a shock absorber by preventing the device from rebounding during its operation.
  • the nail 5 is separated from the coating 6.
  • the coating 6 can be made in one piece with the nail 5 ( Figure 2), this piece can then be for example of copper, copper alloy or steel.
  • the nail * 5 and the coating 6 can also be made of two different parts (made of different or identical materials), assembled for example by riveting ( Figure 3).
  • the brazing effect when it exists (depending on the nature of the material used for the coating 6), occurs inside the blind hole formed by the hollow charge in the element 2 and makes it possible to improve the attachment, the nail 5 being solidly brazed inside this hole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Plates (AREA)
  • Vibration Dampers (AREA)
EP79400434A 1978-07-05 1979-06-28 Nietapparat mit einer Hohlsprengladung Expired EP0006814B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7819952A FR2430278A1 (fr) 1978-07-05 1978-07-05 Nouveau dispositif de rivetage
FR7819952 1978-07-05

Publications (3)

Publication Number Publication Date
EP0006814A2 true EP0006814A2 (de) 1980-01-09
EP0006814A3 EP0006814A3 (en) 1980-01-23
EP0006814B1 EP0006814B1 (de) 1981-12-30

Family

ID=9210325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400434A Expired EP0006814B1 (de) 1978-07-05 1979-06-28 Nietapparat mit einer Hohlsprengladung

Country Status (4)

Country Link
US (1) US4284224A (de)
EP (1) EP0006814B1 (de)
DE (1) DE2961680D1 (de)
FR (1) FR2430278A1 (de)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1794141A (en) * 1928-08-04 1931-02-24 Bloch-Jorgensen Christ Laurits Cartridge with projectile for smooth-bore firearms
US2455825A (en) * 1944-08-15 1948-12-07 Temple Velocity Equipment Inc Explosively actuated fastening apparatus
US2796833A (en) * 1952-05-10 1957-06-25 William G Sweetman Perforating devices
US3046890A (en) * 1959-09-11 1962-07-31 Dardick Corp Ammunition for open chamber guns
US3354658A (en) * 1965-08-12 1967-11-28 Leonardi Sam Apparatus for performing underwater operations
US3597919A (en) * 1969-03-24 1971-08-10 Gen Electric Linear gas generator actuated latching and thrusting device
US3902238A (en) * 1973-02-21 1975-09-02 Aai Corp Impact stapling method
FR2331425A1 (fr) * 1975-11-17 1977-06-10 Alsetex Dispositif pour la fixation pyrotechnique sur une paroi, d'un objet projete a distance contre ladite paroi

Also Published As

Publication number Publication date
EP0006814A3 (en) 1980-01-23
US4284224A (en) 1981-08-18
FR2430278A1 (fr) 1980-02-01
EP0006814B1 (de) 1981-12-30
FR2430278B1 (de) 1980-11-28
DE2961680D1 (en) 1982-02-18

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