EP1202404B1 - Méthode et machine à sertir - Google Patents

Méthode et machine à sertir Download PDF

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Publication number
EP1202404B1
EP1202404B1 EP20010124504 EP01124504A EP1202404B1 EP 1202404 B1 EP1202404 B1 EP 1202404B1 EP 20010124504 EP20010124504 EP 20010124504 EP 01124504 A EP01124504 A EP 01124504A EP 1202404 B1 EP1202404 B1 EP 1202404B1
Authority
EP
European Patent Office
Prior art keywords
crimping
measuring system
tool
motor
regulating
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.)
Expired - Lifetime
Application number
EP20010124504
Other languages
German (de)
English (en)
Other versions
EP1202404A1 (fr
Inventor
Claudio Dipl. El. Ing. Eth Meisser
Hilmar Dipl. El. Ing. HTL Ehlert
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.)
Komax Holding AG
Original Assignee
Komax Holding AG
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 Komax Holding AG filed Critical Komax Holding AG
Priority to EP20010124504 priority Critical patent/EP1202404B1/fr
Publication of EP1202404A1 publication Critical patent/EP1202404A1/fr
Application granted granted Critical
Publication of EP1202404B1 publication Critical patent/EP1202404B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/14—Control arrangements for mechanically-driven presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/266—Drive systems for the cam, eccentric or crank axis
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • H01R43/0488—Crimping apparatus or processes with crimp height adjusting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • H01R43/0486—Crimping apparatus or processes with force measuring means

Definitions

  • the invention relates to a method and a device for controlling a crimping operation used to connect a contact to a conductor, in which a crimping tool of a crimping press is movable from an initial position into a crimping position and subsequently into an end position.
  • a motor drives an eccentric shaft that moves a carriage up and down with crimping tools.
  • An encoder driven by the motor shaft serves to determine the position of the crimping tool.
  • the crimp contact to be connected to a conductor end rests on a stationary anvil, wherein vanes of the crimp contact are plastically deformed during the movement of the crimping tool and establish the connection to the conductor.
  • the position of the crimping tool in the crimping area is measured by means of a height sensor, the sensor signal being used independently of the encoder signal.
  • the crimping force is measured based on the motor current.
  • the measured values are compared with reference values. The comparison allows a statement about the crimp quality.
  • a disadvantage of this known device is that although an encoder and a height sensor are present, only a relatively inaccurate statement about the crimp quality is feasible because external influences and elasticities or stiffness of the mechanical drive elements are not taken into account.
  • Patent US 5,669,257 Another device for crimping is known. This device was primarily about moving the crimping tool at two different speeds. From the so-called crimp contact start position to the lowest position, the crimping tool is moved at a significantly lower speed than in the region above the crimp contact start position. By these measures, a faster operation of the device and a lower noise level should be possible.
  • the Patent US 5,669,257 also proposes that an encoder be used to determine the position of the crimping tool from the angles of rotation of the motor. In addition, a height sensor is used, which is arranged on the anvil side of the device and gives a feedback on whether the crimping tool has reached the correct end position.
  • the invention aims to remedy this situation.
  • the invention as claimed in claims 1 and 4 solves the problem of avoiding the disadvantages of the known device and to provide a method and a device in which and in which the crimping quality of a crimped connection can be improved.
  • the advantages achieved by the invention are essentially to be seen in the fact that no conversion of the crimping press is necessary when processing different crimp contacts with different tool strokes.
  • the crimp height or crimping stroke is adjustable.
  • the control of the crimping press always knows the exact tool position, so that a simple evaluation of the crimping force versus crimping stroke is feasible and other machines involved in the crimping process can be synchronized.
  • the crimping press according to the invention operates with two measuring systems, by means of which a regulation of the drive to position or a crimp height control can be realized.
  • a rotary measuring system is coupled with a linear measuring system.
  • the rotary measuring system allows a high positioning dynamics, because there are no dead times, caused by play in the gearbox, levers or slides.
  • the linear measuring system enables precise crimp height control. Mechanically induced deviations of the crimping press, which can open, for example, by the crimping force or by temperature fluctuations, are compensated by the crimp height control. With the crimp height control, the eccentric of the crimping press moves at most within an angle range between 0 ° and 180 °. The crimping press stops at bottom dead center and then reverses. Upper and lower dead center can be approached as desired within this angular range, depending on the crimping tool and crimp contact. intermediate positions are also possible. To realize these features, only one controlled axis is necessary.
  • the carriage stroke or the crimp height is programmable. In addition, the course of the crimping force as a function of the crimping stroke can be precisely represented and used for quality control purposes.
  • Fig. 1 is denoted by 1 a stand without right side wall on which a motor 2 and a gear 3 mounted on the stator 1 is arranged.
  • first guides 4 are arranged, on which a crimping rod 5 is guided.
  • a driven by the gear 3 shaft 6 (not shown in the figures) has at one end an eccentric pin 7.
  • the crimping rod 5 consists of a carriage 9 guided in the first guides 4 and of a tool holder 10 with a holding fork 11.
  • the carriage 9 is in loose connection with the eccentric pin 7, wherein the rotational movement of the eccentric pin 7 is converted into a linear movement of the carriage 9.
  • the maximum stroke H of the carriage 9 is determined by the top dead center and the bottom dead center of the eccentric pin 7.
  • the tool holder 10 actuates a tool 12 which, together with a tool 12 belonging to the anvil 13 produces the crimped connection.
  • an adjusting screw 14 By means of an adjusting screw 14, the closing height (shut height) in the bottom dead center of the eccentric pin 7 can be precisely adjusted. If no dial is provided on the tool 12, the crimp height can be adjusted with the adjusting screw 14. (Mass between anvil 13 and crimping die at the bottom dead center of the eccentric pin 7).
  • FIGS. 2 and 3 show details of the tool 12 for making a crimped connection.
  • a guided in a tool housing 20 punch carrier 21 has a carrier head 22 which is in loose communication with the holding fork 11 of the tool holder 10.
  • a first crimping punch 23 and a second crimping punch 24 are arranged, which together with the correspondingly formed anvil 13 produce the crimp connections.
  • Fig. 2 shows the crimping dies 23, 24 in the bottom dead center of the eccentric pin 7, in which the preparation of the crimped connection is completed.
  • Fig. 3 shows the crimping dies 23, 24 in the top dead center of the eccentric pin 7. The maximum punch stroke is determined by the two dead center positions.
  • Fig. 4 shows the crimping press with a rotary measuring system 25 arranged on the motor 2, for example an encoder arranged on the motor shaft and with a linear measuring system 26, for example comprising a measuring head 27 and a glass scale rod 28.
  • the graduated glass scale 28 is at one end with the tool holder 10 connected, at the other end of the glass scale rod 28 dips into the measuring head 27, which is firmly connected to the stator foot 29.
  • a force sensor 29.1 for measuring the crimping force is provided on the tool holder 10.
  • Fig. 5 shows an arrangement variant of the linear measuring system 26, wherein the measuring head 27 is arranged on a fixed holder 30 and the glass scale rod 28 is connected at one end to the carriage 9.
  • the opening of the crimping press is not compensated.
  • this value is very small compared to the play in the bearings and rigidity of the gearbox, the shafts and levers.
  • the linear measuring system 26 may be arranged on or in the crimping tool 12. This arrangement allows a very precise detection of the crimp height.
  • Fig. 6 schematically shows the eccentric movement and the carriage movement for a stroke H of, for example, 40 mm, wherein the eccentric pin 7 of 0 ° (top start position or top dead center) to 180 ° (bottom stop position or bottom dead center) rotates and back to 0 ° , where the path between 180 ° and 360 ° is not passed through.
  • Starting positions deviating from 0 ° and intermediate stops (split cycle) on the way between 0 ° and 180 ° are also possible.
  • 180 ° of the eccentric pin 7 corresponds to the minimum crimp height (small crimp contacts with small wire cross sections). For a readjustment, the crimps should be 180 °.
  • Fig. 6 shows various driving examples of the carriage 9 and the tool 12 with and without intermediate stops. Intermediate stops are inserted, for example, for centering special crimp contacts or for synchronization with other cable processing devices.
  • Fig. 7 shows a schematic representation of a control circuit for crimp height control.
  • the control loop consists essentially of a motor position circle with the rotary measuring system 25 and a crimp height control loop with the linear measuring system 26.
  • a signal sc is specified as the setpoint for the crimp height.
  • the signal sc for the target value of the crimp height is converted by means of a first converter 31 into a mass used in the control loop. (Transformation of linear values into rotative values).
  • the converted signal is designated by sc 'and is fed to the input of a trajectory generator 32.
  • trajectory parameters fp such as maximum values for speed, acceleration or deceleration, are also fed to trajectory generator 32.
  • a signal sp is available as a setpoint for the motor position.
  • the signal sp is fed to a first summing point 33 at the + input.
  • a signal xp is connected as an actual value for the motor position.
  • the signal xp is used as a controlled variable and is generated by the rotary measuring system 25.
  • the signal xwp also referred to as a system deviation, which is fed to the input of a circuit 34 which is connected to the input of the first summation point 33 is generated Fig. 8 is explained in more detail.
  • the signal ym ' is the manipulated variable for the motor 2, to which the rotary measuring system 25 is coupled.
  • the signals sd are supplied to the circuit 34 as the desired value for the engine speed, sb as the desired value for the engine acceleration and xp as the actual value for the engine position.
  • the motor 2 drives a mechanism 35, consisting of gear 3 with eccentric 7, guides 4, 5 Crimpbär and tool 12.
  • a mechanism 35 consisting of gear 3 with eccentric 7, guides 4, 5 Crimpbär and tool 12.
  • the connected to the tool holder 10 and the stator 1 linear measuring system 26 generates a signal xc as an actual value for the current position of the tool holder 10 and for the crimp height.
  • the signal xc for the actual value of the crimp height is converted by means of a second transducer 36 into a mass used in the control loop. (Transformation of linear values into rotative values).
  • the converted signal is designated xc 'and is connected to the input of a second summation point 37.
  • the signal sp is connected as a setpoint for the motor position.
  • the signal xc ' is referred to as a controlled variable.
  • the signal xwc also called control deviation, which is guided to the input of a crimp height 38.
  • the provided with, for example, a PI characteristic crimp height regulator 38 generates at the output a signal yc, also called manipulated variable, which is supplied to the circuit 34.
  • Fig. 8 shows details of the circuit 34, which includes a position controller 39, a speed controller 40, a torque controller 41 and the power electronics 42 for the motor 2.
  • the signal xwp is fed to the input of the position controller 39.
  • the provided with, for example, a P-characteristic position controller 39 generates at the output a signal yp, which is the + input of a third summation point 43 is supplied.
  • the setpoint signal sd for the engine speed is connected to a further + input and the actual speed signal xd for the engine speed is connected to the - input.
  • xd is generated by means of a third, provided with a D characteristic converter 46 from the actual value signal xp for the motor position.
  • the third summation point 43 produces the signal xwd, which is guided to the input of the speed controller 40.
  • the provided with, for example, a PI characteristic speed controller 40 generates at the output a signal yd, the + input of a fourth summation point 44 is supplied.
  • the setpoint signal sb 'for the motor acceleration is connected to a further + input and the output signal yc of the crimping height controller 38 is connected to the input.
  • the setpoint sb for the engine acceleration is converted by means of a fourth transducer 45 into a mass used in the control loop.
  • the converted signal is designated sb '.
  • the signal xwm which is fed to the input of the torque controller 41 is formed.
  • a PI characteristic torque controller 41 generates at the output a signal ym, the input of the Power electronics 42 is supplied. In accordance with the signal ym supplied to the power electronics 42, the motor 2 with the manipulated variable ym 'or with energy.
  • Fig. 9 to Fig. 13 show trajectories generated by the trajectory generator 32 as a setpoint specification for moving the crimping tool 12 on the basis of a dashed line and an example shown in dotted line.
  • the step function is such that the angular velocity of the motor flattens in half the speed increase or deceleration, which ensures a smooth transition from changing angular velocity to constant angular velocity or vice versa.
  • the carriage stroke is dependent on the radius R of the eccentric and a cosine function of the motor rotation angle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Claims (5)

  1. Procédé pour commander une opération de sertissage qui sert à relier un contact de sertissage à un conducteur, selon lequel un outil de sertissage (12) d'une presse de sertissage est apte à être amené d'une position initiale à une position de sertissage puis à être ramené à la position initiale, étant précisé qu'un mouvement rotatif d'un moteur (2) qui entraîne l'outil de sertissage (12) est mesuré à l'aide d'un système de mesure rotatif (25) et que le mouvement de l'outil de sertissage (12) est détecté à l'aide d'un système de mesure linéaire (26),
    caractérisé par les étapes suivantes :
    utilisation des valeurs de mesure du système de mesure rotatif (25) et du système de mesure linéaire (26) dans une boucle de régulation pour réguler le mouvement de l'outil de sertissage (12) et pour réguler la hauteur de sertissage, qui se compose essentiellement d'une boucle de régulation de hauteur de sertissage avec le système de mesure linéaire (26) et d'une boucle de position de moteur avec le système de mesure rotatif (25).
  2. Procédé selon la revendication 1, caractérisé par les étapes suivantes :
    sélection d'une position initiale et d'une position de sertissage, étant précisé qu'une goupille excentrique (7) de la presse de sertissage se déplace au maximum dans une zone angulaire entre 0° et 180° et que la presse de sertissage s'arrête dans un point mort bas puis s'inverse.
  3. Procédé selon la revendication 2, caractérisé par les étapes suivantes :
    approche d'un point mort haut et d'un point mort bas à l'intérieur de cette zone angulaire, suivant l'outil de sertissage et le contact de sertissage.
  4. Dispositif pour fabriquer une connexion sertie à l'aide d'un outil de sertissage (12) entraîné par un moteur, étant précisé que ce dispositif, pour détecter le mouvement d'un moteur (2) qui entraîne l'outil de sertissage (12), comprend un système de mesure rotatif (25), et qu'il comprend par ailleurs un système de mesure linéaire (26) pour détecter le mouvement de l'outil de sertissage (12),
    caractérisé en ce que le dispositif comprend par ailleurs une boucle de régulation pour réguler la hauteur de sertissage et pour réguler le mouvement de l'outil de sertissage (12), qui se compose essentiellement d'une boucle de régulation de hauteur de sertissage avec le système de mesure linéaire (26) et d'une boucle de position de moteur avec le système de mesure rotatif (25),
    étant précisé que des valeurs de mesure du système de mesure rotatif (25) et du système de mesure linéaire (26) sont transmises à la boucle de régulation.
  5. Dispositif selon la revendication 4, caractérisé en ce qu'il est prévu un générateur de trajectoire (32) qui génère des signaux de position, des signaux de vitesse de rotation et des signaux d'accélération qui sont reliés comme valeurs théoriques à la boucle de régulation, étant précisé que la boucle de régulation règle la hauteur de sertissage avec les valeurs théoriques et les valeurs de mesure du système de mesure rotatif (25) et avec les valeurs de mesure du système de mesure linéaire (26).
EP20010124504 2000-10-30 2001-10-12 Méthode et machine à sertir Expired - Lifetime EP1202404B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20010124504 EP1202404B1 (fr) 2000-10-30 2001-10-12 Méthode et machine à sertir

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00811006 2000-10-30
EP00811006 2000-10-30
EP20010124504 EP1202404B1 (fr) 2000-10-30 2001-10-12 Méthode et machine à sertir

Publications (2)

Publication Number Publication Date
EP1202404A1 EP1202404A1 (fr) 2002-05-02
EP1202404B1 true EP1202404B1 (fr) 2011-05-18

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EP20010124504 Expired - Lifetime EP1202404B1 (fr) 2000-10-30 2001-10-12 Méthode et machine à sertir

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL1879266T3 (pl) * 2006-07-13 2013-08-30 Schaefer Werkzeug & Sonderma Sposób i urządzenie do ustawiania ruchu skokowego urządzenia zagniatającego
DE102006043561B3 (de) * 2006-09-16 2008-04-30 Schäfer Werkzeug- und Sondermaschinenbau GmbH Verfahren und Vorrichtung zur Kalibrierung einer Anschlagpresse
PL1953880T3 (pl) 2007-02-03 2014-05-30 Schaefer Werkzeug & Sonderma Urządzenie do zaciskania
DE102008006457A1 (de) 2008-01-29 2009-07-30 Kromberg & Schubert Gmbh & Co. Kg Verfahren und Vorrichtung für die Kontaktierung eines elektrischen Leiters
TWI608677B (zh) * 2012-08-15 2017-12-11 威查格工具廠有限公司 壓接機用的變換承接器
DE102018107637A1 (de) 2018-03-29 2019-10-02 Dorst Technologies Gmbh & Co. Kg Kalibrierverfahren
CN110640062A (zh) * 2019-10-09 2020-01-03 青岛宏达锻压机械有限公司 模锻机封闭高度补偿装置
CN114777720B (zh) * 2022-04-24 2023-08-29 刘涛 一种玻璃生产线用圆角测量机构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59302184D1 (de) * 1992-11-11 1996-05-15 Bruderer Ag Verfahren zum Betrieb einer Stanzpresse beim Anfahren und Stillsetzen
US5588344A (en) * 1994-06-13 1996-12-31 Murata Machinery, Ltd. Electric servo motor punch press ram drive
US5669257A (en) * 1994-12-28 1997-09-23 Yazaki Corporation Method of crimping terminal and apparatus for the same
EP0884811B1 (fr) * 1997-06-12 2003-01-22 komax Holding AG Procédé et dispositif pour la réalisation de connexions de sertissage

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