EP3144105B1 - Verfahren zum entfernen eines blindnietelements von einem nietgerät - Google Patents

Verfahren zum entfernen eines blindnietelements von einem nietgerät Download PDF

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Publication number
EP3144105B1
EP3144105B1 EP16189638.6A EP16189638A EP3144105B1 EP 3144105 B1 EP3144105 B1 EP 3144105B1 EP 16189638 A EP16189638 A EP 16189638A EP 3144105 B1 EP3144105 B1 EP 3144105B1
Authority
EP
European Patent Office
Prior art keywords
connecting element
rotary drive
mandrel
riveting machine
driving
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.)
Active
Application number
EP16189638.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3144105A1 (de
Inventor
Michael H. Honsel
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.)
Honsel Distribution GmbH and Co KG
Original Assignee
Honsel Distribution GmbH and Co KG
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Publication date
Application filed by Honsel Distribution GmbH and Co KG filed Critical Honsel Distribution GmbH and Co KG
Publication of EP3144105A1 publication Critical patent/EP3144105A1/de
Application granted granted Critical
Publication of EP3144105B1 publication Critical patent/EP3144105B1/de
Active 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
    • B21J15/10—Riveting machines
    • B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0007—Tools for fixing internally screw-threaded tubular fasteners
    • B25B27/0014—Tools for fixing internally screw-threaded tubular fasteners motor-driven
    • 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
    • B21J15/26—Drives for riveting machines; Transmission means therefor operated by rotary drive, e.g. by electric motor
    • 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

Definitions

  • the invention relates to methods for emergency removal of a blind rivet element from a riveting tool and to a riveting tool.
  • the blind rivet element is screwed to a mandrel of the riveting tool via a first thread arrangement.
  • the pulling mandrel is also connected to a connecting element on the riveting tool via a second thread arrangement.
  • Such riveting tools are, for example, from DE 10 2013 105 703 A1 and the EP 0 670 199 A1 known.
  • the EP 0 670 199 A1 is regarded as the closest prior art and discloses a riveting tool having a mandrel with a first thread arrangement for screwing on a blind rivet element, the mandrel being connected to a connecting element on the riveting tool via a second thread arrangement, a longitudinal drive for axially driving the connecting element, a rotary drive for rotating driving the connecting element in each case with respect to an axis of rotation of the connecting element, and a control unit for driving the rotary drive in a rotational direction which leads to the release of the connection between the mandrel and the connecting element via the second thread arrangement.
  • the first thread arrangement is often damaged.
  • Such damage can occur when setting blind rivet elements as a result of large setting forces that result in irreversible damage to the thread on the mandrel or on the blind rivet element.
  • the torque of the motor is only set in such a way that the mandrel can be screwed in and out of the blind rivet element with the thread undamaged. So far, the user has only been able to unscrew the mandrel between the blind rivet element and the connecting element or saw off the mandrel. However, this can lead to damage to the blind rivet element, to the workpiece to be fastened or to the riveting tool itself and is also time-consuming.
  • an emergency program is started by a user input on the riveting tool.
  • the emergency program then causes the connecting element to be driven by the rotary drive in a clockwise direction of rotation, so that the connection between the mandrel and the connecting element is released via the second thread arrangement.
  • the emergency program causes the rotary drive to stop driving after a specified value has been reached.
  • the essence of the invention consists in particular in the fact that the user no longer has to think about how he can detach the blind rivet element from the riveting tool despite a damaged first thread arrangement. He only starts the emergency program for this.
  • the connecting element is driven by the rotary drive in such a way that the mandrel is released from the connecting element via the other, still intact, second thread arrangement.
  • the rotation ends automatically as soon as the mandrel is released from the connecting element.
  • the first result of this is that the riveting tool, together with the housing and connecting element, is removed from the blind rivet element. Only the mandrel remains on the blind rivet element.
  • the mandrel can now be released manually from the blind rivet element.
  • torques can also be applied that significantly exceed the maximum torque of the riveting tool, as a result of which the mandrel can be unscrewed from the blind rivet element despite the damaged first thread arrangement. If this is not possible either, the mandrel can still be sawed off. Since the riveting tool has now been removed, sawing off is much easier.
  • an anti-twist device by which the pulling mandrel is held on the connecting element in a torsion-proof manner, is released first. Only then is the connecting element driven by the rotary drive.
  • the state of the anti-twist device is preferably monitored by a sensor. Only when the sensor detects that the anti-twist device has been released is the rotary drive activated and the pulling mandrel begins to be released from the connecting element.
  • the connecting element is also moved axially into the housing of the riveting tool by means of the longitudinal drive.
  • the connecting element is thus drawn into the housing of the riveting tool, while at the same time the connecting element is unscrewed from the mandrel by a rotary movement.
  • the axial feed of the connecting element which is generated by twisting the thread, can thus be compensated for by the longitudinal drive.
  • the relative axial movement between the housing of the riveting tool and the blind rivet element can be reduced.
  • the rotary drive and the longitudinal drive are synchronized with one another in such a way that an axial distance between the housing, the riveting tool and the dummy element is kept constant while the connecting element is being driven by the rotary drive.
  • the axial feed can be calculated using the thread pitch and the applied rotational speed of the connecting element.
  • the housing represents in particular a sheathing of parts of the riveting tool.
  • handles by which the user can hold the riveting tool are firmly provided on the housing.
  • a rotary position transmitter is preferably arranged on the riveting tool and is used to determine the rotary position of the rotary drive. Based on the known rotary position of the rotary drive, it can be determined how many revolutions the connecting element has already made. From this it can in turn be determined when a point in time has been reached at which the connecting element is completely unscrewed from the mandrel. This point in time can then be the default value, which ultimately represents the condition for ending the driving by the rotary drive.
  • the invention also includes a riveting tool with a control unit that is set up to control the method described above.
  • FIG 1 a riveting device 10 is shown, which is set up for carrying out the method according to the invention.
  • the riveting tool 10 comprises a housing 20 in which a longitudinal drive 17 (not shown) and a rotary drive 18 (not shown) are arranged.
  • the two drives 17 and 18 can be designed as in the DE 10 2013 105 703 A1 is described.
  • the longitudinal drive 17 is used to drive a connecting element 15 along the axis of rotation A of the connecting element 15 relative to the housing 20.
  • the rotary drive 18 is used to rotate the connecting element 15 about its axis of rotation A relative to the housing 20.
  • the connecting element 15 is designed as a sleeve and is mounted in the housing 20 in an axially displaceable and rotatable manner.
  • One end of the connecting element 15 protrudes from the housing and has a second internal thread 16 on its inner peripheral surface, which is designed as a left-hand thread.
  • a mandrel 11 is screwed onto this second internal thread.
  • the mandrel 11 has a second threaded section 22, which has a second external thread 14, which is also designed as a left-hand thread.
  • the connecting element 15 is guided within a guide sleeve 19 which is firmly connected to the housing 20 .
  • An anti-twist device 24 prevents the mandrel 11 from being twisted relative to the connecting element 15 .
  • the tension mandrel 11 is thus held in a rotationally fixed manner relative to the connecting element 15 via the anti-twist device 24 . If the connecting element 15 is rotated via the rotary drive 18, the mandrel 11 is also rotated, depending on the direction of rotation. If, on the other hand, the anti-twist device 24 is released, a relative rotation between the connecting element 15 and the tension mandrel 11 is possible.
  • the mandrel 11 can be held in place by hand, for example, while the rotary drive 18 causes the connecting element to rotate. Depending on the direction of rotation, the mandrel 11 is then screwed onto the connecting element 15 or unscrewed from it.
  • the anti-twist device 24 comprises a securing section 23 of the tension mandrel 11, which comprises an outer hexagonal surface 25 on the outer circumference.
  • This external hexagonal surface 25 is received in an axially displaceable locking sleeve 27 having an internal hexagonal surface 26 which is complementary to the External hexagonal surface 25.
  • the securing sleeve 27 is held in a rotationally fixed but axially displaceable manner relative to the connecting element 15.
  • FIG 1 the position of the securing sleeve 27 is shown in a securing position, in which the external hexagonal surface 25 is surrounded by the internal hexagonal surface 26, and thus represents an anti-twist device between the connecting element 15 and the pulling mandrel 11. If the locking sleeve 27 in the in figure 1 dashed position is displaced axially in the direction of the arrow, the locking sleeve is in its release position. In this release position, the hexagonal surfaces 25, 26 are disengaged and relative rotation between the connecting element 25 and the mandrel 11 is possible.
  • figure 2 shows a simplified anti-twist device in cross section, comprising the securing section 23 of the tension mandrel 11 with the securing sleeve 27 according to the section line II-II, with this being omitted in the illustration for the sake of simplicity figure 2 also to show the guide sleeve 19 and the connecting element 15 in more detail.
  • the mandrel 11 also has a first threaded portion 21 which includes a first external thread 12, in this case a right-hand thread. This is screwed into a first internal thread 2 of a blind rivet element 1 in preparation for the rivet setting process.
  • the blind rivet element 1 is pot-shaped and has a stop collar 3 .
  • a mouthpiece 13 on the guide sleeve 19 serves as a stop for the stop collar 3 while the blind rivet element 1 is being set.
  • the riveting tool 10 also includes a control unit 30 which controls the longitudinal drive 17 and the rotary drive 18 .
  • a rotational position sensor 29 is also provided, by means of which the rotational position of the connecting element 15 and/or the rotary drive 18 can be determined.
  • the rotational position sensor can also be part of a rotary drive with a brushless motor.
  • the blind rivet element 1 is first screwed onto the first internal thread of the mandrel 11 .
  • the connecting element 15 is rotated by a few revolutions by the rotary drive 18 so that the mandrel 11, which is non-rotatably connected to the connecting element 15, is screwed into the blind rivet element.
  • the longitudinal drive 17 is started abruptly, which pulls the connecting element 15 into the housing 20 .
  • the mouthpiece 13 remains in its position relative to the housing 20 and strikes the stop collar 3 .
  • Tensile loading of the threaded section 21 moving to the right and the associated tensile loading of the thread 2 the blind rivet element 1 is deformed as intended and thus set.
  • FIG 3 now shows the state of the riveting tool and the blind rivet element 1 mounted on it after a riveting process.
  • a closing bead 4 has formed on the blind rivet element 1, through which the clamping with a component (not shown) results in its receiving bore.
  • the rotary drive 18 would now rotate counterclockwise, as a result of which the mandrel 11 would also be rotated counterclockwise and the mandrel 11 would be screwed out of the blind rivet element 1 as a result.
  • the first internal thread 2 of the blind rivet element 1 or the first external thread of the mandrel was damaged during the setting process, so that the mandrel 11 can no longer be twisted relative to the blind rivet element 1 .
  • an emergency program is now started. This is done, for example, by the user pressing a specific key or key combination on the riveting tool 10. Then, as in figure 4 shown, the securing sleeve 27 is pulled by the user in the direction of the housing 20, as a result of which the anti-rotation device 24 between the connecting element 15 and the pulling mandrel 11 is released.
  • the longitudinal drive 17 is activated and causes the connecting element 15 to be displaced into the housing 20 .
  • the connecting element 15 is moved to the right in the present figure, so that the relative alignment between the tension mandrel 11 and the housing 20 remains essentially unchanged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
EP16189638.6A 2015-09-21 2016-09-20 Verfahren zum entfernen eines blindnietelements von einem nietgerät Active EP3144105B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015115869.8A DE102015115869B4 (de) 2015-09-21 2015-09-21 Verfahren zum Entfernen eines Blindnietelements von einem Nietgerät

Publications (2)

Publication Number Publication Date
EP3144105A1 EP3144105A1 (de) 2017-03-22
EP3144105B1 true EP3144105B1 (de) 2022-08-24

Family

ID=56979415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16189638.6A Active EP3144105B1 (de) 2015-09-21 2016-09-20 Verfahren zum entfernen eines blindnietelements von einem nietgerät

Country Status (5)

Country Link
US (1) US10220436B2 (zh)
EP (1) EP3144105B1 (zh)
CN (1) CN106541066B (zh)
DE (1) DE102015115869B4 (zh)
ES (1) ES2929555T3 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107838361A (zh) * 2017-11-27 2018-03-27 平顶山市美伊金属制品有限公司 一种铁锅用三孔铁头去除装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406946C2 (de) * 1994-03-04 1998-11-19 Gesipa Blindniettechnik Blindnietmutter-Setzgerät
DE29502918U1 (de) 1995-02-21 1996-06-20 VVG Befestigungstechnik Beteiligungs-GmbH, 58730 Fröndenberg Nietsetzgerät zum Setzen von Blindnietmuttern und -schrauben
GB2306368B (en) 1995-10-31 1998-08-19 Emhart Inc Rivet setting tool
CN201055899Y (zh) 2007-05-25 2008-05-07 黄鼎钧 拉帽铆合机
CN202105966U (zh) 2011-02-01 2012-01-11 义国工业股份有限公司 电动拉帽机
DE102013105703B4 (de) * 2013-06-04 2015-05-21 VVG-Befestigungstechnik GmbH & Co. KG Nietgerät
FR3016417B1 (fr) 2014-01-14 2016-01-22 Lisi Aerospace Rivet pour fixation aveugle, outil de pose associe et methode de pose d'un tel rivet

Also Published As

Publication number Publication date
CN106541066A (zh) 2017-03-29
CN106541066B (zh) 2019-07-16
US20170080480A1 (en) 2017-03-23
ES2929555T3 (es) 2022-11-30
DE102015115869B4 (de) 2019-02-14
EP3144105A1 (de) 2017-03-22
US10220436B2 (en) 2019-03-05
DE102015115869A1 (de) 2017-03-23

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