EP0093294A2 - Appareil d'amortissement du contrecoup et de la vibration dans des procédés de rivetage à percussion - Google Patents

Appareil d'amortissement du contrecoup et de la vibration dans des procédés de rivetage à percussion Download PDF

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Publication number
EP0093294A2
EP0093294A2 EP83103625A EP83103625A EP0093294A2 EP 0093294 A2 EP0093294 A2 EP 0093294A2 EP 83103625 A EP83103625 A EP 83103625A EP 83103625 A EP83103625 A EP 83103625A EP 0093294 A2 EP0093294 A2 EP 0093294A2
Authority
EP
European Patent Office
Prior art keywords
riveting
counter
rivet
head piece
screwed
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
EP83103625A
Other languages
German (de)
English (en)
Other versions
EP0093294B1 (fr
EP0093294A3 (en
Inventor
Irmtraut Ross
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0093294A2 publication Critical patent/EP0093294A2/fr
Publication of EP0093294A3 publication Critical patent/EP0093294A3/de
Application granted granted Critical
Publication of EP0093294B1 publication Critical patent/EP0093294B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B21J15/02—Riveting procedures
    • 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
    • B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets

Definitions

  • the object of the invention is to avoid these disadvantages. This also includes eliminating noise pollution or reducing it significantly.
  • the object of the invention is to reduce the kickback and the vibration of such counterholders or to eliminate them practically.
  • This object of the invention is defined in the preamble of claim 1.
  • This object of the method of the invention is achieved in that the excess impact force for the deformation work during the riveting is passed over the rivet to the head of the counterhold. This absorbs this excess energy by means of a shock absorber inside the counterhold and connected to the head. This consumes the excess impact force and thereby avoids the transfer to the mass of the counterhold and on its surface.
  • the method of the invention achieves the object of the invention by combining a non-commact, lighter counterhold with a hydraulic shock absorption.
  • the technical effect of the method of the invention for kickback-free and vibration-free counter-holding allows the weight in the counter-holding to be reduced by means of the counter-holder of the invention, in that the excess impact force is adsorbed by a shock absorber.
  • the method of the invention allows the counterhold to be constructed constructively in various ways as the device of the invention.
  • the device for performing the method of the invention in the form of the counter holder is defined in claim 9.
  • the technical effect for achieving the object of the invention of damping the rebound and the vibration in the case of striking riveting processes by means of a counterholder according to the invention is based on the combination of the base body with the exchangeable tool head with the hydraulic shock absorber which is structurally connected in the interior of the base body.
  • Riv striker means the tool that strikes the rivet during the riveting process.
  • the device according to the invention in the form of the counter-damped counter-holder during riveting processes is used for continuous, periodic use in riveting with such a damping area of the hydraulic shock absorber that the shock force to be adsorbed is practically completely absorbed.
  • the shape, length, and thickness of the rivet may require a change in impact force and frequency.
  • This different energy requirement of the riveting process can influence the size of the exchangeable rivet head, the size, i.e. the mass of the counter-damped counter-holder according to the invention and the energy consumption of the hydraulic shock absorber.
  • the outer, insulating hand protection of the device according to the invention avoids the transfer to the hand during manual use.
  • the "adsorption" of the excess impact energy by the shock absorption is understood as a rule for technical action, the “absorption” of this impact force and its transformation in the sense of converting the mechanical energy into thermal energy.
  • adsorption would be a reversible process that can lead to desorption.
  • the term chosen and defined is also not understood to mean the “absorption” which leads to a chemical absorption of a substance in the phase of another substance, it being possible to reverse this process in the sense of an equilibrium, or this absorption constitutes one Implementation.
  • absorption means the absorption of the compression energy and its conversion into enthalpy, ie irreversible thermal energy.
  • the rivet hammer of the rivet hammer hits the rivet head.
  • the rivet is held at its lower end by the counter holder according to the invention.
  • the employed person When riveting, the employed person is exposed, for example, to the frequency of the vibration of 25 kHz for 10 msec, followed by a brief interruption of approximately 30 msec, and then the riveting process is repeated periodically.
  • the riveting time is approximately 16 seconds.
  • the effective frequency of the acceleration of the riveting hammer and the counterholder according to the invention can be in the range from about 1 to 40 kHz.
  • the acceleration of the riveting hammer can be, for example, about 2000 m / sec 2 and that of the counter-holder according to the invention can be up to 4000 m / sec 2 .
  • the method of the invention with the device for carrying it out offers the advantage over the prior art that physical damage during handling in the hand-arm area is practically avoided.
  • the technical riveting process is also safer and can therefore be carried out more quickly, i.e. with optimal use of time: a certain deviation in the direction of the impact, such as about 3 ° in the direction of the axis of the hydraulic shock absorber, can Do not adversely affect the riveting process.
  • the counter-damped counter-holder according to the invention offers the advantage of variable adaptation to the technical process.
  • This adaptation consists in the choice of the dimension of the counter-holder, in the interchangeability of the head of the counter-holder and in the choice of the hydraulic shock absorber and in the adjustability of the slower or faster damping.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
EP83103625A 1982-04-22 1983-04-14 Appareil d'amortissement du contrecoup et de la vibration dans des procédés de rivetage à percussion Expired EP0093294B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3214966 1982-04-22
DE19823214966 DE3214966A1 (de) 1982-04-22 1982-04-22 Verfahren zur daempfung des rueckschlages und der vibration bei schlagenden nietvorgaengen und rueckschlagsgedaempfter gegenhalter bei nietvorgaengen

Publications (3)

Publication Number Publication Date
EP0093294A2 true EP0093294A2 (fr) 1983-11-09
EP0093294A3 EP0093294A3 (en) 1984-03-28
EP0093294B1 EP0093294B1 (fr) 1986-02-26

Family

ID=6161617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83103625A Expired EP0093294B1 (fr) 1982-04-22 1983-04-14 Appareil d'amortissement du contrecoup et de la vibration dans des procédés de rivetage à percussion

Country Status (2)

Country Link
EP (1) EP0093294B1 (fr)
DE (2) DE3214966A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345721A3 (fr) * 1988-06-07 1991-02-27 Berning & Söhne GmbH & Co. Dispositif de fixation de boutons, crochets, oeillets ou analogues

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE168253C (fr) *
DE171067C (fr) *
US1276235A (en) * 1918-01-12 1918-08-20 Joseph D Loranger Dolly-bar.
DE679734C (de) * 1935-09-24 1939-08-12 E H Dr Phil H C Ernst Heinkel Nietgegenhalter, vorzugsweise fuer Handnietung
US2321225A (en) * 1941-06-18 1943-06-08 Darrel C Hart Riveting tool
US3933025A (en) * 1974-03-28 1976-01-20 Briles Franklin S High speed riveting system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345721A3 (fr) * 1988-06-07 1991-02-27 Berning & Söhne GmbH & Co. Dispositif de fixation de boutons, crochets, oeillets ou analogues

Also Published As

Publication number Publication date
EP0093294B1 (fr) 1986-02-26
EP0093294A3 (en) 1984-03-28
DE3214966A1 (de) 1983-10-27
DE3362250D1 (en) 1986-04-03

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