CN103372626A - Method for operating a riveting device - Google Patents

Method for operating a riveting device Download PDF

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Publication number
CN103372626A
CN103372626A CN2013102307611A CN201310230761A CN103372626A CN 103372626 A CN103372626 A CN 103372626A CN 2013102307611 A CN2013102307611 A CN 2013102307611A CN 201310230761 A CN201310230761 A CN 201310230761A CN 103372626 A CN103372626 A CN 103372626A
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CN
China
Prior art keywords
power
direct current
motor
staking
current generator
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Pending
Application number
CN2013102307611A
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Chinese (zh)
Inventor
A·诺尔特
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
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HONSEL UMFORMTECHNIK GmbH
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Publication date
Application filed by HONSEL UMFORMTECHNIK GmbH filed Critical HONSEL UMFORMTECHNIK GmbH
Publication of CN103372626A publication Critical patent/CN103372626A/en
Pending legal-status Critical Current

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    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Stopping Of Electric Motors (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

The method involves a direct current (DC) motor (2) comprising a commutator with a number of sliding contacts (33). A rivet setting device (5) for setting rivets is driven by the DC motor, where power consumption of the DC motor is controlled by pulse width modulation. The power consumption is actuated in such a manner for acceleration of the rivet setting device and/or for deceleration of the rivet setting device by the pulse width modulation such that the power consumption continuously increases during start-up phases for setting up the maximum acceleration power and/or brake performance. An independent claim is also included for a rivet setting apparatus.

Description

The method of operation staking equipment
Technical field
The present invention relates to a kind of operation staking equipment
Figure BSA00000909615600011
Method.
Background technology
DE 198 18 755 A1 disclose a kind of corresponding staking equipment.It comprises drive motors and the rivet pulling device that is driven by drive motors, adopts the battery of rechargeable to power to drive motors.Utilize rivet pulling device especially can apply active force to blind rivet, thereby finish the staking process.Control motor by power MOSFET.Can be at electric motor starting stage limiting motor electric current by this transistor.If under certain applicable cases, need less power of motor, then can utilize pulse width modulation to reduce power input to a machine by electric machine control system.
If in this type of staking equipment, use direct current generator, then there is following danger, thereby namely owing to the carbon brush spark occurs so that the carbon brush rapid wearing of colelctor electrode and direct current generator affects the staking functions of the equipments.Therefore if directly with full voltage and control motor with 100% or approximate 100% input power, then especially this danger can occur the startup stage.If on the other hand according to described in DE 198 18755 A1 like that the startup stage by transistor limiting motor electric current, will so that just in time the startup stage do not have full power to accelerate direct current generator and be connected to clincher tool on this motor or the parts of flywheel and so on.But it is very important just directly providing very large driving power from the outset, because whole staking process is very of short duration, moment needs full power basically.
Have motor large-size, that be used for larger electric current although can use, also can use brushless electric machine on the other hand.But the cost of these two kinds of replacement schemes is very high.
Summary of the invention
Therefore task of the present invention is, reduces the direct current generator wearing and tearing that the carbon brush spark causes by the cheap as far as possible measure of cost.
Adopt method claimed in claim 1 and staking equipment claimed in claim 5, can solve task of the present invention.Preferred embodiment is by drawing in the dependent claims.
Core of the present invention is, utilizes pulse width modulation so that the input power in the start-up course increases continuously, especially is ramped shaped and increases.Mainly refer to the zero hour of accelerator and the zero hour of braking procedure startup stage of so-called.
Show, be supplied to the power of motor by continuous raising, just can greatly reduce the carbon brush spark.But also can guarantee simultaneously the startup stage make direct current generator reach rapidly required power level.Especially so that input power the startup stage be ramped shaped, and preferably be linear and rise to 100% maximum accelerating power or braking power from 0%.The preferred above frequency of 30kHz of using is as the fundamental frequency of pulse width modulation.This fundamental frequency is can be by the minimal turn-on of pulse width modulation realization or the inverse of shut-in time.Under these frequencies, can not occur to cause power attenuation additionally the motor feels hot.In addition, the performance performance of direct current generator under this fundamental frequency just stablized and applied (being non-pulse) voltage and control as using.
Beneficial effect in the continuous elevation process of power not only relate to setting up maximum accelerating power the startup stage, and relate to setting up maximum brake power the startup stage.In order to set up accelerating power, can by pulse width modulation improve the startup stage in continue the average supply voltage that raises.Be used for setting up braking power the startup stage in, can again reduce continuously this supply voltage equally.Reduce power of motor by power MosFet transistor, and as if with an ever-reduced braking resistor and motor parallel.For example by the converting power source polarity of voltage, also can alternatively apply initiatively braking energy, thereby in direct current generator, generate the electric current of opposite direction.Then be ramped shaped and set up the average supply voltage of reverse, be similar to set up maximum accelerating power the startup stage.
Show, with stepped will speed up power or braking power directly from 0% bring up to 100% stepped the startup stage opposite, only can produce negligible acceleration or braking time and prolong, but almost completely or at least fully eliminate the carbon brush spark in the direct current generator.
The startup stage duration preferably less than 50ms.Especially should according to the PWM fundamental frequency, strive the minimum switch time of realizing less than 200ns and preferably being not more than 100ns.Refer to the shortest as far as possible connection and close the duration so-called minimum switch time.
Description of drawings
Below will be explained in detail the present invention with reference to the accompanying drawings.Accompanying drawing is as follows:
Accompanying drawing 1 is the cutaway view of the staking equipment that can start by the method for the invention;
Accompanying drawing 2 is the views for the four-quadrant adjuster of the direct current generator of control staking equipment;
Accompanying drawing 3 is variation schematic diagrames of the supply voltage of direct current generator and the acceleration ramp that produces or braking slope.
The specific embodiment
Accompanying drawing 1 is depicted as the cutaway view of staking equipment 1 of the present invention.Staking equipment 1 has motor 2, speed changer 3, toggle 4 and rivet pulling device 5.Motor 2, speed changer 3, toggle 4 and rivet pulling device 5 are arranged among the shell 6 of staking equipment 1.
Motor 2 is direct current generators, and it has drive pinion 7 in the side towards toggle 4.Motor 2 is threaded connection device 8 and is fixed on the shell 6.Drive pinion 7 is fixed on the motor shaft 9 of motor 2 in non-rotatable mode, this motor shaft is protruding from motor 2 on a side of toggle 4 at motor.In non-rotatable mode flywheel 10 is installed on the motor shaft 9 on the side of toggle dorsad at motor 2.
Transmitter 3 comprises power transmission shaft 11, and this power transmission shaft can be rotated to support in the shell 6 in two supporting-points 12 and 13.Supporting- point 12 and 13 has ball bearing separately.To be arranged on the power transmission shaft 11 in non-rotatable mode with drive pinion 7 and turbine 15 meshed gears 14.Turbine 15 meshes with the gear 16 of toggle 4.Toggle 4 is made of gear 16, and this gear can be rotated to support on the axle 17, and this axle is bearing in again among the shell 6.As shown in Figure 1, gear 16 has eccentric wheel 18, and connecting rod 19 is bearing on this eccentric wheel in the mode that can rotate.Between the opening 20 in eccentric wheel 18 and connecting rod 19 ball bearing 21 is arranged.Connecting rod 19 has the axle journal 22 that is hinged and connected with rivet pulling device 5.If the rotation of axle 17, eccentric wheel 18 and axle journal 22 point-blank, then toggle just is among in its dead point one.If eccentric wheel 18 is arranged between axle 17 and the axle journal 22, then toggle is just among its front dead point; If axle 17 is arranged between eccentric wheel 18 and the axle journal 22, then toggle just is in thereafter among the dead point.
Front end at staking equipment 1 has opening 23, can in known manner the blind rivet 24 with rivet pin 25 be inserted among this opening.Because the operation principle of this type of rivet pulling device is known already, therefore only represent with schematic diagram.In principle so that the driving component 26 of rivet pulling device towards the toggle rectilinear motion, can be carried out the staking process.Usually this pulling motion is called the staking stroke.Rivet pulling device can be carried out idle stroke at toggle through suitably design when the dead point is towards the motion of front dead point thereafter, and only has when toggle and just can carry out the staking stroke from its front dead point during towards the motion of rear dead point.
In addition, staking equipment 1 also is furnished with the battery jar 27 that is installed on the shell 6 and can pulls down, and the battery that can again charge is arranged among this battery jar.Battery jar 27 has the lug boss 28 of bolt shape, this lug boss is contained among the accommodation hole 29 of shell, as shown in Figure 1.
The inside of shell 6 has switch 30, can handle this switch by manipulation device 31.Described manipulation device 31 is common triggers, and pressing this trigger can master cock 30.
Shell 6 forms handle 32 in the scope of manipulation device 31 and between motor 2 and battery jar 27.The operator can hold staking equipment 1 by handle 32, and wherein operator's finger can manipulation device 31.
The contact 33 that stretches out from battery jar 27 links to each other with contact chip 34.These contact chips 34 link to each other with switch 30 and motor 2 by unshowned cable again, and link to each other with the circuit that does not illustrate equally.
Below will explain in detail effect of the present invention and operation principle: the electric power storage of fully charged recharge also is installed on the staking equipment 1 with being arranged in wherein but the operator is at first in known manner with battery jar 27.Battery jar 27 is inserted among the accommodation hole 29 of staking equipment 1 by its lug boss 28 for this reason, so that contact 33 and contact chip 34 interlocks, and can give circuit 45 power supplies.Then the operator by handle 32 that staking equipment 1 is hand held in, finger is manipulation device 31 in known manner at this moment.Blind rivet 24 is inserted among the rivet pulling device 5 by its rivet pin 25.
In the time of among the operator is pressed into manipulation device 31 on shell 6, will actuating switch 30.Can power to motor 2 by the circuit that also will in accompanying drawing 2, explain like this.The motor 2 of having switched on passes to transmitter shaft 11 via gear 14 with its moment of torsion now, also passes to turbine 15 simultaneously.Turbine is engaged among the gear 16, and so that eccentric wheel 18 rotations.In the initial position of staking equipment 1, the rotation of axle 17, eccentric wheel 18 and axle journal 22 is on a line, and at this moment toggle is in thereafter among the dead point.
Make its startup by applying electric current for motor 2, thereby so that toggle move towards front dead point from dead point thereafter.Because rivet pulling device can be carried out idle stroke in the initial motion process of toggle, so drive motors can not start less than it is revolved in the situation that adds pulling force at rivet pulling device.If toggle has arrived its front dead point, then drive motors begins to apply pulling force by the driving component 26 of 4 pairs of rivet pulling devices 5 of toggle.Carry out in known manner the staking process by this pulling force now.When toggle was arranged in thereafter dead point (namely being positioned at its initial position) again, then staking process finished.
Accompanying drawing 1 is depicted as that toggle is among its front dead point, the rivet pulling device when namely the staking stroke begins.
Especially when the staking stroke begins, can apply by the flywheel that links to each other with drive motors king-sized moment of torsion or king-sized pulling force.When the staking stroke began, the power that occurs was maximum.Because the path from rear dead point to front dead point is idle stroke, therefore can make flywheel correspondingly reach rotating speed.Although motor the startup stage be not subject to the effect of staking instrument when beginning, flywheel the startup stage just directly be close on the motor as load when beginning.
This means, although when drive motors is started working not with pull transfer to rivet pulling device, but in when beginning whole driving powers are passed to flywheel.But in order as early as possible flywheel to be accelerated, should when starting working, drive motors directly provide large as far as possible power by drive motors.
In order to prevent the carbon brush spark or it to be reduced to the acceptable level, start simultaneously drive motors and reach as early as possible driving power in full now, can about 50ms the startup stage carry out as shown in Figure 3 power ramping.In the curve map left part A that does not draw in proportion, can find out acceleration ramp.Utilize pulse width modulation that drive motors is revolved making alive, the startup stage improve continuously (U=U turn-on time Max), and correspondingly reduce continuously the shut-in time (U=0).Right side part B is depicted as braking slope, during this power is reduced to 0% continuously from 100%.By the in parallel realization braking of braking resistor with motor.
Preferably control motor by a plurality of transistors that are incorporated in the four-quadrant circuit.Be a kind of so known circuit shown in the accompanying drawing 2.This circuit comprises the H shape electric bridge with four transistors 41.Utilize this circuit can temporal evolution with supply voltage U BImpose on motor 2, in case of necessity also can the reverse of polarity.Transistorized control circuit 42 is applied the control electric current, can be so that corresponding transistor turns.These control circuits all are connected on the control module of not drawing.
Even in having the staking equipment of other type of variator, also identical effect can occur.As the replacement scheme of described speed changer, especially also can rotatablely moving of motor be transformed into by screw drive mechanism (especially can pass through ball-screw) transverse movement of rivet pulling device.If the use screw drive mechanism will apply load by rivet pulling device to motor so immediately when staking operation beginning.Thus, method described here is equally applicable to have the staking equipment of this type of speed changer.

Claims (6)

  1. One kind the operation staking equipment (1) method, described staking equipment (1) comprising:
    Direct current generator (2), this direct current generator has the commutator that comprises some sliders, and
    Be used for the rivet pulling device (5) of staking, drive this rivet pulling device by direct current generator (2),
    Wherein utilize the input power of pulse width modulation control direct current generator (2),
    It is characterized in that,
    Utilize pulse width modulation so to control and be used for making rivet pulling device (5) to accelerate and/or be used for to make the input power of rivet pulling device (5) deceleration, so that input power the startup stage (A, B) increase continuously, thereby set up maximum accelerating power or braking power.
  2. 2. according to the described method of the claims, it is characterized in that, input power the startup stage be ramped shaped, and especially be linear and rise to 100% maximum accelerating power or braking power from 0%.
  3. 3. according to each described method in the claims, it is characterized in that, will especially be not less than the fundamental frequency of 30kHz for pulse width modulation greater than 20kHz.
  4. 4. according to each described method in the claims, it is characterized in that, the startup stage duration less than 50ms.
  5. 5. according to each described method in the claims, it is characterized in that preferably be not more than 100ns less than 200ns minimum switch time.
  6. 6. a staking equipment (1) comprises
    Rivet pulling device (5),
    Direct current generator (2), this direct current generator has the commutator that comprises some sliders,
    Wherein said direct current generator (2) drives rivet pulling device (5) and/or with its braking,
    It is characterized in that,
    Control staking equipment (1) by each described method in the claims.
CN2013102307611A 2012-04-12 2013-04-12 Method for operating a riveting device Pending CN103372626A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1020120071949 2012-04-12
DE102012007194A DE102012007194A1 (en) 2012-04-12 2012-04-12 Method for operating a rivet setting device

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CN103372626A true CN103372626A (en) 2013-10-30

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EP (1) EP2650061A2 (en)
CN (1) CN103372626A (en)
DE (1) DE102012007194A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439022A (en) * 2014-10-24 2015-03-25 洪劲松 Electric riveting tool
CN104815940A (en) * 2015-04-30 2015-08-05 南京航空航天大学 Pull riveting unit applied to multifunctional end executor and working method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145360A (en) * 1998-04-27 2000-11-14 M. H. Honsel Beteiligungs Gmbh Rivet setting device
CN101579717A (en) * 2009-06-24 2009-11-18 文星毅 Portable type intelligent direct-current electric blind-riveting tool
CN101758778A (en) * 2010-02-05 2010-06-30 江苏大学 Current vortex retarder, generation/start integrated system and control method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006020627A1 (en) * 2006-05-04 2007-12-06 Volkswagen Ag Controlling method for direct current servomotor, involves determining reference pulse pauses relation, and fixing intermediate value between reference and actual relation containing number sequence of pulse pauses relations

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145360A (en) * 1998-04-27 2000-11-14 M. H. Honsel Beteiligungs Gmbh Rivet setting device
CN101579717A (en) * 2009-06-24 2009-11-18 文星毅 Portable type intelligent direct-current electric blind-riveting tool
CN101758778A (en) * 2010-02-05 2010-06-30 江苏大学 Current vortex retarder, generation/start integrated system and control method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439022A (en) * 2014-10-24 2015-03-25 洪劲松 Electric riveting tool
WO2016062192A1 (en) * 2014-10-24 2016-04-28 洪劲松 Electric riveting tool
CN104815940A (en) * 2015-04-30 2015-08-05 南京航空航天大学 Pull riveting unit applied to multifunctional end executor and working method

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Publication number Publication date
DE102012007194A1 (en) 2013-10-17
EP2650061A2 (en) 2013-10-16

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Application publication date: 20131030