EP2992981A1 - The method of removing rivets especially for magnetic-impulse installation for riveting with heating - Google Patents

The method of removing rivets especially for magnetic-impulse installation for riveting with heating Download PDF

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Publication number
EP2992981A1
EP2992981A1 EP14460123.4A EP14460123A EP2992981A1 EP 2992981 A1 EP2992981 A1 EP 2992981A1 EP 14460123 A EP14460123 A EP 14460123A EP 2992981 A1 EP2992981 A1 EP 2992981A1
Authority
EP
European Patent Office
Prior art keywords
rivet
riveting
punch
heating
magnetic
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.)
Withdrawn
Application number
EP14460123.4A
Other languages
German (de)
French (fr)
Inventor
Aleksandr Gubarev
Roman Chabior
Stanislaw Slapek
Aleksandr Sinelnikov
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.)
"newtech" Sp Z OO
Original Assignee
"newtech" Sp Z OO
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 "newtech" Sp Z OO filed Critical "newtech" Sp Z OO
Publication of EP2992981A1 publication Critical patent/EP2992981A1/en
Withdrawn legal-status Critical Current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
    • B21J15/38—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
    • 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
    • B21J15/02—Riveting procedures
    • B21J15/08—Riveting by applying heat, e.g. to the end parts of the rivets to enable heads to be formed
    • 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
    • B21J15/24—Drives for riveting machines; Transmission means therefor operated by electro-magnets

Definitions

  • the present invention is the method of removing rivets especially for magnetic-impulse installation for riveting with heating.
  • the tubular rivet with a core is equipped with a tubular body with a flat surface on one of its endings and a flange on the other ending, and with core with shank, which is placed in the body, provided with head on one of its endings, touching the end of the body with a flat surface.
  • the shank of the core is provided with a weakened area, located close to the conical surface between the outer surface of the head and the shank of the core, which causes the appearance of the axial compound force which pulls the shank of the core, pressing the body of rivet and a radial compound of the force, expanding the ending of the rivet body.
  • the head of the core has an outer diameter bigger than the outer diameter of the rivet body by 4% to 9%.
  • the present invention also provides a method of one-sided riveting, in particular sheet metals with the help of a tubular rivet, characteristic in that, the opening in the riveted sheet metals, on the inaccessible side to the operator, is provided with a conical widening, into which the ending of the rivet body is pressed forming rivet point, which does not protrude from the sheet metal surface.
  • the present invention is the riveting head, forming riveted joints in a rotary manner for inseparable joining of parts through the use of an external drive unit for rotary and advancing motion to exert pressure of the punch.
  • the punch is supported in a rotational manner on a needle rolling bearing and lengthwise on a thrust spherical component, and on the face side of the body it is closed with a seal and a seating ring.
  • WO 2013/053350 A1 From the international patent no. WO 2013/053350 A1 is well-known the invention relating to the realisation of many riveted joints along the surface of the processing object, in particular a riveting device, consisting of a tooling device which is controlled by the control data of tool, for forming rivets with a conical head in the openings of the processing product, the openings and head are formed to adjust rivets with the conical head, through the use of programmable controlling device for transmitting data which control the tool for tool device and an optical measuring device for optical detecting of surface of processing object and for providing data to sensor.
  • a riveting device consisting of a tooling device which is controlled by the control data of tool, for forming rivets with a conical head in the openings of the processing product, the openings and head are formed to adjust rivets with the conical head, through the use of programmable controlling device for transmitting data which control the tool for tool device and an optical measuring device for optical detecting of surface of processing object and for providing data
  • control device is configured according to the invention in order to evaluate the sensor data, to obtain the geometrical data which comprise at least one geometrical parameter which is a conical opening that has already been formed, and depending on the result of the evaluation of geometrical data, if necessary, it is allowed to carry out the correction of control data of tool for later formulation of conical endings.
  • WO 2007/090682 A2 From the international patent application no. WO 2007/090682 A2 is well-known a riveting gun and a device for installing the rivet.
  • the gun consists of the head of the rivet, a rivet with a flange at one ending and a tip of rivet at the other end.
  • the body of the rivet has a cavity in the shape of the opening on the section of the sleeve.
  • this gun carries out shot about percussive activity with the help of its end of rivet to the opening in two sheets, which must be connected with itself, until the flange of rivet sits down on the upper surface of a front upper layer.
  • WO 03/061869 A1 is well-known an automatic device for cutting rivets, which consists of a matrix with a central mandrel, taking the hollow part in the part of limb with automatic cutting of rivet, the body of matrix has a sunk part for directing the deformation of the ending of limb for the automatic cutting of rivet in the radial external direction, formed on the external peripheral part of the centre mandrel, wherein the centre pin and the body of matrix are movably connected to one another along the direction of the axis of the mandrel facing the punch, and the spring of panel, where the aligning mandrel is moving against the body of the nozzle so that the automatically cut rivet is pressed by the punch, is carried out at sharp parts, and the tip of the piercing of limb starts clamping an element on the receiving side, through the spindle, it is possible to bring into contact with the side surface of the tightened matrix element on the receiving side, the limit of direction of moving of pointed elements can be mitigated or eliminated
  • the purpose of the invention is to develop the new method of removing rivets especially for magnetic- impulse installation for riveting with heating.
  • the method is that, in the first stage, on the both sides the device clamps around the clapped rivet, then the contacts of device are connected to the endings of rivet, in the second stage, the rivet is heated up to a temperature at least 500°C, preferably 600-700 ° C, next the rivet is removed by the use of a punch, then the punch and touching elements are cooled with preferably compressed air, wherein the removal of the rivet is made automatically.
  • the object of the invention was shown in the example on the picture, on which heating the rivet to the required temperature and removing the rivet by the punch were show.
  • the method of removing rivets from different alloys during the repairing the riveted sets of machines consists of the following operations:
  • Removing of the rivet is made automatically after reaching the required temperature. Cooling the punch and touching elements by the use of compressed air.
  • the industrial device for removing the rivets consists of: a very fast electro-impulse driver, placed on a hung clamp, the battery and technological tooling for placing and turning around a product in comfortable working position.
  • the heating temperature of the rivet is controlled by the automatic tracking system.
  • the manual and automatic mode is provided for the configuration of equipment and its operations in the control system.

Abstract

The method of removing rivets, especially by means of magnetic - impulse riveting installation with heating, characteristic in that, in the first stage, on the both sides the device clamps around the clapped rivet, then the contacts of device are connected to the endings of rivet, in the second stage, the rivet is heated up to a temperature at least 500 ° C, preferably 600-700 ° C, next the rivet is removed by the use of a punch, then the punch and touching elements are cooled with preferably compressed air, wherein the removal of the rivet is made automatically.

Description

  • The present invention is the method of removing rivets especially for magnetic-impulse installation for riveting with heating.
  • From the polish patent no. 359889 is well-known a tubular rivet with a core and a single-riveting method, especially sheet metal. The tubular rivet with a core is equipped with a tubular body with a flat surface on one of its endings and a flange on the other ending, and with core with shank, which is placed in the body, provided with head on one of its endings, touching the end of the body with a flat surface. The shank of the core is provided with a weakened area, located close to the conical surface between the outer surface of the head and the shank of the core, which causes the appearance of the axial compound force which pulls the shank of the core, pressing the body of rivet and a radial compound of the force, expanding the ending of the rivet body. The head of the core has an outer diameter bigger than the outer diameter of the rivet body by 4% to 9%. The present invention also provides a method of one-sided riveting, in particular sheet metals with the help of a tubular rivet, characteristic in that, the opening in the riveted sheet metals, on the inaccessible side to the operator, is provided with a conical widening, into which the ending of the rivet body is pressed forming rivet point, which does not protrude from the sheet metal surface.
  • From the polish patent no. 345965 presents a device which is well-known to one-sided riveting equipped with a set, tearing the core of rivet, placed in the body of the head of the device, in combined with a hydraulically activated piston which tears the clamping sleeve, surrounding jaws, clamping the core of rivet, pressed against the clamping piston by means of a clamping sleeve. Between the clamping piston and the tearing piston, there is pressure chamber, connected with the port of compressed air by the means of a control unit.
  • From the polish patent no. 377909 is well-known a riveting head. The present invention is the riveting head, forming riveted joints in a rotary manner for inseparable joining of parts through the use of an external drive unit for rotary and advancing motion to exert pressure of the punch. The riveting head is provided with a body in the form of a cylinder with a grip, inside which the punch is seated eccentrically relative to the longitudinal axis, under the angle α within the range of 4 ÷ 6°, optimally under the angle of α = 5°. The punch is supported in a rotational manner on a needle rolling bearing and lengthwise on a thrust spherical component, and on the face side of the body it is closed with a seal and a seating ring.
  • From the international patent no. WO 2013/053350 A1 is well-known the invention relating to the realisation of many riveted joints along the surface of the processing object, in particular a riveting device, consisting of a tooling device which is controlled by the control data of tool, for forming rivets with a conical head in the openings of the processing product, the openings and head are formed to adjust rivets with the conical head, through the use of programmable controlling device for transmitting data which control the tool for tool device and an optical measuring device for optical detecting of surface of processing object and for providing data to sensor. In order to ensure the quality and durability during the rivet connection through the use of a rivet device, the control device is configured according to the invention in order to evaluate the sensor data, to obtain the geometrical data which comprise at least one geometrical parameter which is a conical opening that has already been formed, and depending on the result of the evaluation of geometrical data, if necessary, it is allowed to carry out the correction of control data of tool for later formulation of conical endings.
  • From the international patent application no. WO 2007/090682 A2 is well-known a riveting gun and a device for installing the rivet. The gun consists of the head of the rivet, a rivet with a flange at one ending and a tip of rivet at the other end. The body of the rivet has a cavity in the shape of the opening on the section of the sleeve. As the other riveting guns, this gun carries out shot about percussive activity with the help of its end of rivet to the opening in two sheets, which must be connected with itself, until the flange of rivet sits down on the upper surface of a front upper layer.
  • From the international patent application no. WO 03/061869 A1 is well-known an automatic device for cutting rivets, which consists of a matrix with a central mandrel, taking the hollow part in the part of limb with automatic cutting of rivet, the body of matrix has a sunk part for directing the deformation of the ending of limb for the automatic cutting of rivet in the radial external direction, formed on the external peripheral part of the centre mandrel, wherein the centre pin and the body of matrix are movably connected to one another along the direction of the axis of the mandrel facing the punch, and the spring of panel, where the aligning mandrel is moving against the body of the nozzle so that the automatically cut rivet is pressed by the punch, is carried out at sharp parts, and the tip of the piercing of limb starts clamping an element on the receiving side, through the spindle, it is possible to bring into contact with the side surface of the tightened matrix element on the receiving side, the limit of direction of moving of pointed elements can be mitigated or eliminated.
  • The purpose of the invention is to develop the new method of removing rivets especially for magnetic- impulse installation for riveting with heating.
  • According to the invention, the method is that, in the first stage, on the both sides the device clamps around the clapped rivet, then the contacts of device are connected to the endings of rivet, in the second stage, the rivet is heated up to a temperature at least 500°C, preferably 600-700 ° C, next the rivet is removed by the use of a punch, then the punch and touching elements are cooled with preferably compressed air, wherein the removal of the rivet is made automatically.
  • The object of the invention was shown in the example on the picture, on which heating the rivet to the required temperature and removing the rivet by the punch were show.
    • An example
  • The method of removing rivets from different alloys during the repairing the riveted sets of machines consists of the following operations:
    • both sided clamping of the device around the clapped rivet
    • connecting the contacts to the endings of the rivet in order to heat the clapped part of the rivet
    • heating of the rivet to the temperature of 650° C and removing the rivet by the use of the punch (the picture)
  • Removing of the rivet is made automatically after reaching the required temperature. Cooling the punch and touching elements by the use of compressed air.
  • The industrial device for removing the rivets consists of: a very fast electro-impulse driver, placed on a hung clamp, the battery and technological tooling for placing and turning around a product in comfortable working position. The heating temperature of the rivet is controlled by the automatic tracking system. For the configuration of equipment and its operations in the control system, the manual and automatic mode is provided.
  • Process characterises as the process of quality and increased productivity.

Claims (1)

  1. The method of removing rivets, especially by means of magnetic - impulse riveting installation with heating, characteristic in that, in the first stage, on the both sides .the device clamps around the clapped rivet, then the contacts of device are connected to the endings of rivet, in the second stage, the rivet is heated up to a temperature at least 500 °C, preferably 600-700 °C, next the rivet is removed by the use of a punch, then the punch and touching elements are cooled with preferably compressed air, wherein the removal of the rivet is made automatically.
EP14460123.4A 2014-09-08 2014-12-19 The method of removing rivets especially for magnetic-impulse installation for riveting with heating Withdrawn EP2992981A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL409400A PL409400A1 (en) 2014-09-08 2014-09-08 Method for removing rivets, preferably for the magnetic-pulse system for hot riveting

Publications (1)

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EP2992981A1 true EP2992981A1 (en) 2016-03-09

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EP14460123.4A Withdrawn EP2992981A1 (en) 2014-09-08 2014-12-19 The method of removing rivets especially for magnetic-impulse installation for riveting with heating

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576064A (en) * 1968-09-26 1971-04-27 Mc Donnell Douglas Corp Rivet removing tool and method
PL345965A1 (en) 2000-03-10 2001-09-24 Gesipa Blindniettechnik Device for one-sided riveting with tubular rivets
WO2003061869A1 (en) 2001-12-27 2003-07-31 Newfrey Llc. Automatic punching riveting device and die used for the device
PL359889A1 (en) 2002-05-08 2003-11-17 Newfrey Llc Tubular rivet with core and method of one-side riveting, particularly metal sheet riveting
PL377909A1 (en) 2005-10-31 2007-05-14 Ośrodek Badawczo-Rozwojowy Podstaw Technologii i Konstrukcji Maszyn TEKOMA Riveting head
WO2007090682A2 (en) 2006-02-12 2007-08-16 Adolf Würth GmbH & Co. KG Gun rivet
WO2013053350A1 (en) 2011-10-13 2013-04-18 Premium Aerotec Gmbh Apparatus and method for realizing a plurality of riveted connections along the surface of a workpiece

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576064A (en) * 1968-09-26 1971-04-27 Mc Donnell Douglas Corp Rivet removing tool and method
PL345965A1 (en) 2000-03-10 2001-09-24 Gesipa Blindniettechnik Device for one-sided riveting with tubular rivets
WO2003061869A1 (en) 2001-12-27 2003-07-31 Newfrey Llc. Automatic punching riveting device and die used for the device
PL359889A1 (en) 2002-05-08 2003-11-17 Newfrey Llc Tubular rivet with core and method of one-side riveting, particularly metal sheet riveting
PL377909A1 (en) 2005-10-31 2007-05-14 Ośrodek Badawczo-Rozwojowy Podstaw Technologii i Konstrukcji Maszyn TEKOMA Riveting head
WO2007090682A2 (en) 2006-02-12 2007-08-16 Adolf Würth GmbH & Co. KG Gun rivet
WO2013053350A1 (en) 2011-10-13 2013-04-18 Premium Aerotec Gmbh Apparatus and method for realizing a plurality of riveted connections along the surface of a workpiece

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