EP1690647B1 - Dispositif à impulsion de pression d' air avec amortissement de contrecoup - Google Patents

Dispositif à impulsion de pression d' air avec amortissement de contrecoup Download PDF

Info

Publication number
EP1690647B1
EP1690647B1 EP20060002212 EP06002212A EP1690647B1 EP 1690647 B1 EP1690647 B1 EP 1690647B1 EP 20060002212 EP20060002212 EP 20060002212 EP 06002212 A EP06002212 A EP 06002212A EP 1690647 B1 EP1690647 B1 EP 1690647B1
Authority
EP
European Patent Office
Prior art keywords
piston
impact device
cylinder
air impact
piston rod
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.)
Not-in-force
Application number
EP20060002212
Other languages
German (de)
English (en)
Other versions
EP1690647A2 (fr
EP1690647A3 (fr
Inventor
Robert Lobsa
Hans Stein
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.)
ThyssenKrupp System Engineering GmbH
Original Assignee
ThyssenKrupp Drauz Nothelfer GmbH
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 ThyssenKrupp Drauz Nothelfer GmbH filed Critical ThyssenKrupp Drauz Nothelfer GmbH
Publication of EP1690647A2 publication Critical patent/EP1690647A2/fr
Publication of EP1690647A3 publication Critical patent/EP1690647A3/fr
Application granted granted Critical
Publication of EP1690647B1 publication Critical patent/EP1690647B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21J15/025—Setting self-piercing rivets
    • 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
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/18—Drives for riveting machines; Transmission means therefor operated by air pressure or other gas pressure, e.g. explosion pressure

Definitions

  • the invention relates to a recoil-damped compressed air impact device according to the preamble of claim 1, which consists of two arranged in a cylinder, in opposite directions from a fed via a supply channel pressure piston movable piston, a percussion piston and a balance piston, wherein also each of the piston provided in the cylinder air passages and the percussion piston associated with a striker are such a compressed air striker is from the EP-A-0 906 810 known.
  • the impact device may be robotically guided.
  • the percussion piston and the balance piston are each designed rodless and provided in a separate cylinder, the supply channels for the compressed air are each arranged laterally of the cylinder.
  • both pistons move in opposite directions, whereby a recoil damping occurs when the cylinder is stationary.
  • the percussion piston strikes the punch, while only then the abutment of the compensating piston takes place. This is ensured by the fact that the balance piston has a longer cylinder than the percussion piston and thus only hits its end position when the percussion piston has already completed its stroke on the punch and this in turn on the selected stroke.
  • the object of the invention is to propose a solution with which the recoil damping further increases and thus, without causing overloading of the joints of the industrial robot, the compressed air impact device can be used as a robot-guided joining tool, as well as a tilting of the Consandden connecting element (z. B. punch rivet) prevented and an adaptation of the impact energy to different joining tasks is possible.
  • the advantages of the invention are that the repulsion effect of the percussion piston is transmitted directly to the balance piston and not on the cylinder by the joint arrangement of the piston in one and the same cylinder, whereby the recoil can be further damped and thus the air impact device can be used as a robot-guided joining tool without overloading the robot joints.
  • This also makes it possible that the percussion piston in conjunction with the striker can perform a Positionierhub, wherein the connecting element facing the end of the striker comes into contact with the head of the connecting element and thus its possible tilted position can be eliminated. This makes it possible to hedge the production of high-quality joint connections.
  • the impact energy can be adapted to different joining tasks, so that a larger working range can be covered by one and the same air impact device.
  • a compressed air impact device 1 is shown with rivet 2, which is connected via an adapter 3 with an arm, not shown, of a robot.
  • the rivet feed 2 receives the punch rivets 4, which are occasionally submitted to an anvil 5 for pulse-like driving into the sheets 6, 7 to be joined, in particular for motor vehicle bodies.
  • the compressed air impact device 1 includes a cylinder 8, in which both a percussion piston 9 and a compensating piston 10 are arranged axially displaceable.
  • a piston rod 11 is provided on the percussion piston 9, which can be brought into operative connection with the striker 5.
  • the cylinder 8 is a fixed piston rod 12, on which the balance piston 10 is guided displaceably and in this piston rod 12, a supply channel 13 for the fed into the cylinder 8 pressure means 14 (compressed air) is arranged.
  • the piston-side end 15 of the piston rod 12 extends into the region between the percussion piston 9 and compensating piston 10.
  • the percussion piston 9 and the balance piston 10 each with an air channel 16, 17.
  • the compensating piston 10 on its side facing the percussion piston 9 on a ring-shaped and with respect to the percussion piston 9 as a spacer 18 in appearance emerging projection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Manipulator (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (3)

  1. Dispositif à impulsion de pression d'air avec amortissement de contrecoup (1), composé de deux pistons disposés de façon opposée dans un cylindre (8) et actionnés par un fluide sous pression (14) qui, lui, est alimenté à travers d'un canal d'amenée (13), d'un piston de frappe (9) et d'un piston d'équilibrage (10) qui, eux, sont disposés dans le même cylindre (8), où pour chacun des pistons (9, 10) dans le cylindre (8) sont prévus des canaux d'air (16, 17) et où le piston de frappe (9) est en plus doté d'une bouterolle (5), où le piston de frappe (9) comprend une tige (12) concourant avec la bouterolle (5), où le cylindre (8) est menu d'une tige de piston rigide (12) sur laquelle coulisse le piston d'équilibrage (10), et où le canal d'amenée (13) pour le fluide sous pression (14) à alimenter est juste disposé dans cette tige de piston (12) dont le bout (15) s'étend jusqu'à l'espace entre les pistons de frappe (9) et les pistons d'équilibrage (10),
    caractérisé en ce
    que le bout (15) de la tige de piston (12) arrive jusqu'un espace creux (19) qui, lui, est formé par un écarteur (18) situé sur le piston d'équilibrage (10), ce bout présentant tout de même une distance (s) du piston de frappe (9).
  2. Dispositif à impulsion de pression d'air avec amortissement de contrecoup (1) suivant la revendication 1,
    caractérisé en ce
    que le piston d'équilibrage (10) est conçu tel qu'il peut être déplacé, avec le piston de frappe (9), sur la longueur de la distance de mise au point (a).
  3. Dispositif à impulsion de pression d'air avec amortissement de contrecoup (1) suivant la revendication 2,
    caractérisé en ce
    que la longueur de la distance de mise au point (a) est obtenue par l'addition de la longueur de guidage totale (h) du piston d'équilibrage (10) et la longueur (c) de l'écarteur (18) des deux pistons (9, 10) qui, eux, se déplacent l'un vers l'autre, tout en tenant compte tant d'une distance minimale (s) entre le bout (15) de la tige de piston (12) et le piston de frappe (9), que d'une longueur de guidage minimale (b) nécessaire au piston d'équilibrage (10) monté sur la tige de piston (12).
EP20060002212 2005-02-09 2006-02-03 Dispositif à impulsion de pression d' air avec amortissement de contrecoup Not-in-force EP1690647B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005005731 2005-02-09

Publications (3)

Publication Number Publication Date
EP1690647A2 EP1690647A2 (fr) 2006-08-16
EP1690647A3 EP1690647A3 (fr) 2008-12-24
EP1690647B1 true EP1690647B1 (fr) 2012-11-07

Family

ID=36479049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060002212 Not-in-force EP1690647B1 (fr) 2005-02-09 2006-02-03 Dispositif à impulsion de pression d' air avec amortissement de contrecoup

Country Status (2)

Country Link
EP (1) EP1690647B1 (fr)
ES (1) ES2399055T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CL2008002367A1 (es) * 2007-08-13 2009-01-02 Russell Mineral Equipment Pty Ltd Martillo sin retroimpacto accionado neumaticamente que comprende una primera carcasa, una cabeza de cincel y un mecanismo de piston dispuesto en un tubo, con medios de ingreso de aire a baja presion y medios de ingreso de aire a alta presion que permiten el movimiento del piston.
DE102015004811B4 (de) * 2015-04-14 2017-02-16 Thomas Magnete Gmbh Hydraulisch-pneumatische Vorrichtung zum Impulsfügen
CN109692934B (zh) * 2019-03-06 2024-05-07 苏州施米特机械有限公司 穿刺铆接机构

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE406875B (sv) * 1976-03-15 1979-03-05 Nilsson Goran Alfred Avvribreringsanordning vid med tryckmediedriven, fram- och atergaende slagmekanism forsedda verktyg
US4351225A (en) * 1980-01-17 1982-09-28 The Aro Corporation Vibration attenuation construction for an impact air tool
SE510057C2 (sv) * 1997-08-07 1999-04-12 Wiklund Henry & Co Utloppskanal i tryckmediumdriven slagmekanism

Also Published As

Publication number Publication date
ES2399055T3 (es) 2013-03-25
EP1690647A2 (fr) 2006-08-16
EP1690647A3 (fr) 2008-12-24

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