EP2650061A2 - Procédé de fonctionnement d'un appareil de pose de rivets - Google Patents

Procédé de fonctionnement d'un appareil de pose de rivets Download PDF

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Publication number
EP2650061A2
EP2650061A2 EP20130163505 EP13163505A EP2650061A2 EP 2650061 A2 EP2650061 A2 EP 2650061A2 EP 20130163505 EP20130163505 EP 20130163505 EP 13163505 A EP13163505 A EP 13163505A EP 2650061 A2 EP2650061 A2 EP 2650061A2
Authority
EP
European Patent Office
Prior art keywords
motor
power
rivet setting
phase
power consumption
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Withdrawn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
EP20130163505
Other languages
German (de)
English (en)
Inventor
Andreas Nolte
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 Umformtechnik GmbH
Original Assignee
Honsel Umformtechnik 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 Honsel Umformtechnik GmbH filed Critical Honsel Umformtechnik GmbH
Publication of EP2650061A2 publication Critical patent/EP2650061A2/fr
Withdrawn legal-status Critical Current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
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B21J15/043—Riveting hollow rivets mechanically by pulling a mandrel
    • 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
    • B21J15/105—Portable riveters
    • 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

Definitions

  • the invention relates to a method for operating a Nietsetzêts.
  • a corresponding Nietsetz Meeting is disclosed.
  • This comprises a drive motor and a rivet setting device driven by the drive motor.
  • a rechargeable battery is provided for powering the drive motor.
  • the motor is controlled by a power MOSFET. About such a transistor, the motor current can be limited in a start-up phase of the motor. If a lower motor power is required in an application, then the power consumption of the motor can be reduced by means of a pulse width modulation via the motor control.
  • the core of the invention is in particular that using the pulse width modulation, the power consumption during the startup process continuously increases, in particular ramps increases.
  • the start-up phase essentially both the beginning of an acceleration process and the beginning of a braking process are designated.
  • the brush fire can be drastically reduced.
  • the DC motor is quickly brought to the desired level of performance even in the start-up phase.
  • the fundamental frequency for the pulse width modulation is preferably a frequency of more than 30 kHz used.
  • the fundamental frequency describes the reciprocal of the minimum switch-on or switch-off, which can be realized by the pulse width modulation. At such frequencies there is no additional heating of the engine, which could lead to power losses.
  • the DC motor behaves at such a fundamental frequency as if the control with a constantly applied, ie unpulsed voltage.
  • the beneficial effect in this continuous increase in power relates both to the start-up phase for building up the maximum acceleration power and the start-up phase to build up the maximum braking power.
  • the average supply voltage which rises steadily during the startup phase, can be increased by pulse width modulation.
  • this supply voltage is also reduced continuously.
  • the power reduction of the motor via the PowerMosFet transistors and there is a quasi-reducing braking resistor connected in parallel to the motor.
  • an active braking energy can be applied, for example, by reversing the polarity of the supply voltage, thereby generating an opposite current flow in the DC motor.
  • the construction of the middle reversed supply voltage then follows in turn ramped analogous to the start-up phase to build up the maximum acceleration power.
  • the start-up phase lasts less than 50ms. Due to the PWM fundamental frequency, in particular minimum switching times of less than 200 ns or preferably not more than 100 ns are to be aimed for.
  • the minimum switching time means the duration of the smallest possible switch-on or switch-off time.
  • Fig. 1 the Rivet setting device 1 according to the invention is shown in a sectional view.
  • the Nietsetz réelle 1 has an electric motor 2, a transmission 3, a crank mechanism 4 and a Nietsetz driving 5.
  • the electric motor 2, the transmission 3, the crank mechanism 4 and the Nietsetz driving 5 are arranged in a housing 6 of the Nietsetz advocatess 1.
  • the electric motor 2 is a DC motor which has a drive pinion 7 on the side facing the crank mechanism 4.
  • the electric motor 2 is fastened to the housing 6 via a screw connection 8.
  • the drive pinion 7 is rotatably mounted on a motor shaft 9 of the electric motor 2, which is led out of the electric motor 2 on the side facing the crank mechanism 4 side of the electric motor.
  • a flywheel 10 is rotatably mounted on the side facing away from the crank gear of the electric motor 2.
  • the transmission 3 comprises a transmission shaft 11 which is rotatably supported in the housing 6 in two bearing points 12 and 13.
  • the bearings 12 and 13 each have ball bearings.
  • a gear 14 is arranged, which meshes with the drive pinion 7 and a worm wheel 15.
  • the worm wheel 15 meshes with a gear 16 of the crank mechanism 4.
  • the crank mechanism 4 is formed by the gear 16, which is rotatably mounted on an axis 17, which in turn is mounted in the housing 6. How out Fig. 1 shows, the gear 16 has an eccentric 18, on which a crank rod 19 is rotatably mounted. Between eccentric 18 and an opening 20 in the connecting rod 19 is a ball bearing 21.
  • the connecting rod 19 has a pin 22 which is pivotally connected to the Nietsetz Anlagen 5.
  • the crank mechanism is in one of its dead centers.
  • the crank mechanism is in its front dead center; when the axis 17 between the eccentric 18 and pin 22 is arranged, the crank mechanism is in its rear dead center.
  • an opening 23 is provided into which a blind rivet 24 with a rivet pin 25 can be inserted in a known manner. Since the operation of such a Nietsetz Anlagen is well known, this is shown only schematically.
  • a setting process is carried out in which a linear movement of a pulling means 26 of the riveting device is carried out in the direction of the crank mechanism. This pull movement is commonly referred to as a set stroke.
  • the Nietsetz nerve is designed so that during the movement of the crank mechanism from its rear dead center to its front dead center a Leerhub is performed and only when the crank mechanism moves from its front dead center to its rear dead center, the setting stroke is performed.
  • the rivet setting apparatus 1 is provided with a battery case 27 detachably attached to the case 6, in which rechargeable batteries are disposed.
  • the battery housing 27 has a pin-shaped projection 28 which is received in a receptacle 29 of the housing, as shown in FIG Fig. 1 is shown.
  • a switch 30, which can be actuated by an actuating device 31.
  • This actuator 31 is an ordinary pusher which depresses the switch 30 by depression.
  • the housing 6 is formed in the region of the actuating device 31 and between the electric motor 2 and the battery housing 27 as a handle 32.
  • the Nietsetz réelle 1 can be held on the handle 32 by an operator, the fingers of the operator's hand can operate the actuator 31.
  • contact tongues 34 are in turn connected to switch 30 and the electric motor 2 via cables not shown together and with a circuit, also not shown in connection.
  • Fig. 1 the rivet setting device is shown when the crank mechanism is in its forward dead center, ie at the beginning of the set stroke.
  • a particularly large torque, or a particularly large tractive force can be applied, in particular at the beginning of the setting stroke. At the beginning of the setting stroke the occurring force is greatest. Due to the idle stroke on the way from the rear dead center to the front dead center, the flywheel can be brought to speed accordingly.
  • the electric motor is not acted upon by the rivet setting tool at the beginning of the start-up phase; However, the flywheel is directly at the beginning of the start-up phase as a load on the electric motor.
  • a power ramp in FIG. 3 is shown.
  • an acceleration ramp can be seen.
  • the braking ramp is shown, in which the supply power is continuously reduced from 100% to 0%. The actual braking takes place via the parallel connection of a braking resistor to the motor.
  • the motor control is carried out via a plurality of transistors, which are preferably combined in a four-quadrant circuit.
  • a circuit is known per se in FIG. 2 shown. This includes an H-bridge with four transistors 41. With this circuit, the supply voltage U B can be applied to the motor 2 variable in time and possibly also reversed. By applying a control current to the control line 42 of a transistor, the respective transistor is switched through.
  • the Steuerieitungen are connected to a control unit, not shown.
  • the conversion of the rotational movement of the motor toward the lateral movement of the riveting device can also be realized in particular by a spindle drive, in particular a ball screw.
  • a spindle drive When using a spindle drive, the motor is immediately loaded by the rivet setting device when starting the riveting operation.
  • the method described herein is equally suitable for a rivet setting device with such a transmission.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Stopping Of Electric Motors (AREA)
  • Control Of Direct Current Motors (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP20130163505 2012-04-12 2013-04-12 Procédé de fonctionnement d'un appareil de pose de rivets Withdrawn EP2650061A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012007194A DE102012007194A1 (de) 2012-04-12 2012-04-12 Verfahren zum Betreiben eines Nietsetzgeräts

Publications (1)

Publication Number Publication Date
EP2650061A2 true EP2650061A2 (fr) 2013-10-16

Family

ID=48095679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20130163505 Withdrawn EP2650061A2 (fr) 2012-04-12 2013-04-12 Procédé de fonctionnement d'un appareil de pose de rivets

Country Status (3)

Country Link
EP (1) EP2650061A2 (fr)
CN (1) CN103372626A (fr)
DE (1) DE102012007194A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439022B (zh) * 2014-10-24 2015-09-16 洪劲松 电动铆钉工具
CN104815940B (zh) * 2015-04-30 2017-03-01 南京航空航天大学 应用于多功能末端执行器的拉铆单元及工作方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818755A1 (de) 1998-04-27 1999-11-04 Honsel M H Beteiligungs Gmbh Nietsetzgerät
DE102006020627A1 (de) * 2006-05-04 2007-12-06 Volkswagen Ag Verfahren zum Steuern eines DC-Stellmotors und DC-Stellmotor-Steuervorrichtung
CN101579717B (zh) * 2009-06-24 2011-05-18 文星毅 便携式智能直流电动拉铆枪
CN101758778B (zh) * 2010-02-05 2012-08-29 江苏大学 电涡流缓速器及发电/起动集成系统与控制方法

Also Published As

Publication number Publication date
CN103372626A (zh) 2013-10-30
DE102012007194A1 (de) 2013-10-17

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