EP0417370A1 - Verfahren und Einrichtung, um maschinell Klemmen an leitende Drähte zu Crimpen und um die Crimpenhöhe genau zu Regeln - Google Patents

Verfahren und Einrichtung, um maschinell Klemmen an leitende Drähte zu Crimpen und um die Crimpenhöhe genau zu Regeln Download PDF

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Publication number
EP0417370A1
EP0417370A1 EP89430026A EP89430026A EP0417370A1 EP 0417370 A1 EP0417370 A1 EP 0417370A1 EP 89430026 A EP89430026 A EP 89430026A EP 89430026 A EP89430026 A EP 89430026A EP 0417370 A1 EP0417370 A1 EP 0417370A1
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EP
European Patent Office
Prior art keywords
crimping
plate
plates
servomotor
connecting rods
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Withdrawn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
EP89430026A
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English (en)
French (fr)
Inventor
Claude Ricard
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0417370A1 publication Critical patent/EP0417370A1/de
Withdrawn legal-status Critical Current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
    • B30B15/0029—Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y10T29/49181—Assembling terminal to elongated conductor by deforming
    • Y10T29/49185—Assembling terminal to elongated conductor by deforming of terminal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53235—Means to fasten by deformation

Definitions

  • the invention relates to methods and devices for mechanically crimping terminals on conductive wires and for precisely adjusting the crimping height.
  • the technical sector of the invention is that of the construction of automatic wiring machines.
  • automatic cabling machines which include a conveyor which serves work stations which select conductive wires, cut them into sections of determined length, strip the ends of the wires and crimp parts thereon.
  • male or female connection which can have different shapes and which we will refer to below as terminals.
  • the mechanical crimping of the terminals is generally carried out by placing one end of stripped wire and a terminal between two press plates which carry punches and dies which fold crimping fins on the wire and which permanently deform them so that the terminal is crimped on the end of the wire.
  • This operation is very delicate to perform mechanically. If the minimum distance between the two plates at the time of crimping is too great, the crimping is not tight enough and the fixing of the terminal may not resist pulling on the wire. If, on the other hand, the crimping height is set too small, the wire and the terminal may be crushed and the resistance of the electrical connection between the wire and the terminal no longer conforms to the theoretical values.
  • the objective of the present invention is to provide means which make it possible to mechanically crimp a terminal on one end of a conductive wire by having the possibility of adjusting the crimping height with very great precision, and by having the possibility of controlling this crimping height to respect a set value determined in each case as a function of diameter and nature of the wire as well as the shape and form of the nature of the terminal.
  • the methods according to the invention are of the known type in which a terminal is mechanically crimped onto a conductive wire using a crimping press comprising a fixed plate and a movable plate on which a matrix and a crimping punch are fixed respectively.
  • the objective of the invention is achieved by a process which comprises the following operations: - the movable plate of the press is moved by means of two connecting rods, which are articulated between them and therefore the articulation point is moved to bring it onto the line, passing through the ends of the two connecting rods, one of which is articulated on said movable plate and the other is articulated on an adjustable support point and said support point is moved parallel to the direction of movement of said plates to modify the crimping height.
  • the fulcrum is carried by a slide movable in a guide parallel to the direction of movement of said plates, which slide is crossed by an opening having an inclined edge, a shaped key is engaged in said opening and in the guide pieces. corner and said key is pressed more or less to vary the position of said slide and said fulcrum.
  • the wedge-shaped key is moved by means of a screw and nut mechanism driven by a servomotor, the minimum distance between the two plates is measured during crimping, this distance is compared to a value setpoint and the rotation of said servomotor is controlled, so as to cancel the difference between the minimum measured distance and said setpoint.
  • a device is characterized in that the movable press plate is connected by an articulation to a first connecting rod which is articulated on a second connecting rod, the other end of which is articulated on a support point which is located on a line parallel to the direction of movement of said plates passing through the articulation of the first connecting rod and said device comprises means for moving the articulation common to the two connecting rods and for bringing it onto said line passing through the ends of the two connecting rods.
  • the fulcrum of the upper connecting rod is constituted by a part which slides in a guide perpendicular to said plates, which sliding part comprises a transverse opening having a lower inclined edge, in which is engaged a wedge-shaped key and said device. includes means for more or less pressing said key into said opening, which are controlled by a servomotor.
  • the means for moving the wedge-shaped key are constituted by a screw and nut mechanism driven step by step by a servomotor.
  • a device comprises means for measuring the minimum distance which separates the two plates of the press when the two connecting rods are aligned and it also comprises means for controlling the servomotor which moves said key. , so that the minimum distance measured respects a setpoint.
  • the present invention results in the possibility of crimping terminals on conductive wires by having the possibility of adjusting the minimum height between the crimping tools during crimping and therefore of indirectly adjusting the final thickness of the crimping with very high precision. the order of a few hundredths of a millimeter.
  • the devices according to the invention make it possible to automatically adjust the crimping height from a measurement of minimum distance between the two plates of a press which is much easier to perform than a direct measurement of the crimping height which is only about a millimeter.
  • the system for controlling the movement of the movable plate by a device with articulated connecting rods forming a compass or a parallelogram allows the distance between the plates to go to a minimum when the connecting rods are aligned which is not the case when using a displacement means which exerts on the movable plate a force directed in the direction of movement of the plate.
  • Figures 1 and 2 show vertical sections of a mechanical crimping press. Schematically shown in these figures is a press which has a fixed horizontal plate, for example the lower plate 1 and a movable plate, for example the upper plate 2, which slides vertically in guide columns 3 which are anchored in a solid 4 and the vertices of which are interconnected by crosspieces 5 or any other equivalent metallic structure.
  • a press which has a fixed horizontal plate, for example the lower plate 1 and a movable plate, for example the upper plate 2, which slides vertically in guide columns 3 which are anchored in a solid 4 and the vertices of which are interconnected by crosspieces 5 or any other equivalent metallic structure.
  • the lower plate carries crimping dies 6, which cooperate with crimping punches 7 fixed under the lower plate.
  • Figure 1 shows the movable plate 2 in the raised position.
  • a stripped end of a conductive wire 8 which is placed on a terminal 9, which is for example a female connection piece, with rolled edges, which comprises a first pair of fins 10 which must be folded down and crimped on the stripped end of the wire to ensure the electrical connection and a second pair of fins 11 which must be folded down and crimped on the insulating sheath of the wire 8 to ensure mechanical fixing.
  • a terminal 9 is enlarged.
  • the terminal 9 can have other shapes and the crimping fins also.
  • the dies 6 and the punches 7 are chosen according to the shape of the crimping fins. Either at the height of a die 6 measured from the upper face of the fixed plate 6 and b the height of the corresponding punch measured from the lower face of the movable plate.
  • the lengths a and b are fixed and well known for a given set of dies and crimping punches.
  • FIG. 2 represents the press in the maximum crimping position, that is to say in the position where the distance z between the two plates which is assumed to be parallel is minimum and equal to zero.
  • crimping height h the minimum distance between the punch and the die at the moment when the press plates are closest together.
  • the press plates are generally very rigid and their deformations are negligible.
  • the crimping thicknesses are of the order of 1mm and the upstream experience that in order to obtain satisfactory crimping from an electrical and mechanical point of view, the crimping height had to be adjusted with great precision of the order of a few hundredths of millimeter which is very difficult to obtain.
  • the deformations of the columns can cause the press plates to assume non-horizontal positions and in this case, the distance zo varies with the place where it is measured and the deviations are greater than the desired precision. To take account of these deformations, the minimum distance between plates is advantageously measured at several points thereof.
  • the presses have two guide columns and the deformations of the columns generally cause a slope of the upper plate which lies in the plane of the two columns.
  • two minimum distances z1 and z2 are measured between the two plates at two points located in the plane of the two columns at distances d1 and d2 on either side of a matrix associated with a punch.
  • the weighted average is calculated
  • any known distance sensor capable of measuring a relatively small distance with high accuracy is used.
  • an ultrasonic sensor is used which is integral with one of the plates and which sends an ultrasonic beam to the other plate and which measures the time which elapses between the emission of a pulse and the reception of the echo.
  • the distance is measured by means of a distance sensor by interference fringes.
  • Figure 3 is a partial vertical section of a crimping device according to the invention.
  • This figure shows the upper plate 2 of a crimping press which slides without play on two guide columns 3, the upper ends of which are connected together by a cross-member 5.
  • the plate 2 carries crimping punches on its underside. 7.
  • z represents the variable distance between the two plates: zo is the minimum distance during crimping.
  • the device comprises two connecting rods 12 and 13 which are preferably identical and which are connected together by a joint 14 so that they form a compass.
  • the first connecting rod 12 is connected to the movable plate by an articulation 15.
  • the end of the second connecting rod opposite the articulation 14 is connected to an articulation 16 which is carried by a mechanical part 17 which can slide vertically without play between two parts fixed 18a and 18b which constitute a vertical guide for the slide 17 which serves as a fixed fulcrum.
  • the joints 15 and 16 are aligned along a line zz1 which is parallel to the guide columns 3, that is to say in the direction of movement of the plate 2 and which is advantageously coincident with the axis of the plate perpendicular thereto .
  • the slide 17 is traversed right through by an opening 19 having an inclined lower edge in which is engaged a trapezoidal wedge-shaped key 20 which is also engaged in two openings of the guide pieces 18a and 18b.
  • the slide In each determined position of the key, the slide is kept in a fixed position but this position is adjustable in height by driving in or backing the key 20 more or less.
  • Figure 3 shows the plate 2 in the high position.
  • the two connecting rods 12 and 13 are then inclined and they form an angle ⁇ with the vertical. If 1 is the length of each connecting rod, the distance between the two joints 15 and 16 is then equal to 2 l cos ⁇ . If the compass closed by the two connecting rods is opened, the point 16 remains fixed and the plate 15 moves downwards. It passes through the lowest position when the joint 14 passes through the line x x1, that is to say when the two connecting rods are aligned. At this time, the distance z between the two press plates is minimum and equal to zo and it is this which determines the deformation of the crimping pieces and the final thickness of the crimping.
  • the point 14 is moved horizontally for example by a hydraulic or pneumatic cylinder 21 or by any other equivalent means.
  • the minimum distance zo between the two plates which is obtained when the two connecting rods 12 and 13 are aligned, is modified by the same length and in the same direction.
  • the horizontal displacement of the corner 20 makes it possible to vertically move the slide 17 and therefore also the articulation 20. If the corner 20 is pressed to the left, the point 16 descends and the minimum distance z decreases, therefore also the crimp height and the final crimp thickness. If the corner 20 is removed to the right, the slider 17 can rise higher when the compass 12, 13 pushes it up; the minimum distance zo increases and therefore the crimping height increases and the final crimping thickness also. Given the significant efforts involved, the corner 20 is strongly blocked.
  • a device comprises a screw and nut mechanism 22 associated with a stepping servomotor, which mechanism is connected by a rod 23 to the key 20 and moves the latter in one direction or the other when the two trays are spaced apart, which allows the key to be unlocked and moved easily and quickly.
  • a crimping station is controlled by a calculation unit 24 which automatically controls the sequence of crimping operations for each series of identical terminals. For a series of determined terminals, which must be crimped onto the determined wires, the appropriate crimping height is known experimentally and the different crimping heights are recorded in the computer memory in association with the characteristics of the terminals and wires. .
  • the servomotor of the screw and nut mechanism 22 includes a servo loop.
  • This loop can be analog.
  • the functions of the control loop are performed digitally by the computing unit.
  • the calculation unit communicates the setpoint value zc to the comparator of the control loop.
  • the crimping starts and distance sensors measure the minimum distance zo between the two plates.
  • the comparator determines the deviation zo - zc or the calculation unit calculates this deviation and controls the servomotor for move the key 20 in the direction which tends to cancel this difference.
  • sensors of the distance between the two plates are used, for example two sensors placed at known distances d1 and d2 on either side of a crimping tool, which measure two minimum distances z1 and z2 as explained with reference to FIG. 2.
  • the measured values z1 and z2 are transmitted to the calculating unit which samples them, which determines the minimum values and which calculates an average of these values, weighted according to the distances d1 and d2.
  • the calculation unit 24 calculates the difference between the weighted average value and the set value zc and it controls the servomotor of the mechanism 22 to move the key 20 in the direction which tends to cancel this difference.
  • the automatic crimp height adjustment begins with the crimping of the first terminal and it is possible that the first crimps obtained are bad.
  • the computer emits a signal when the difference between the measured value and the set value exceeds a threshold and this signal can be used to control an alarm or an automatic rejection device for defective parts.
  • the stroke of the jack 21, which displaces the articulation 14, is adjusted so that, during crimping, the articulation 14 passes beyond the axis x x1 passing through the articulations 15 and 16 located at the ends of the two connecting rods which guarantees that the minimum distance between the two press plates is reached and moreover that this minimum distance is passed twice in the direction of closing then in the direction of opening of the press.
  • FIG. 4 represents a vertical section of an alternative embodiment of a device according to the invention.
  • the device comprises a third plate 25 which is situated above the mobile press plate 2 and which carries the articulation 16 of the upper connecting rod.
  • This third plate 25 is mounted on two nuts 26a, 26b which are screwed onto the upper ends of the guide columns 3 which have a thread 3a.
  • Each nut is integral with a toothed pinion 27a, 27b which meshes with a pinion 28 driven in step-by-step rotation by a servomotor 29 which is controlled by the calculating unit 24.
  • the calculation unit 24 receives the measurements of the distance z between the two plates, determines the minimum distance zc or the minimum weighted average in the case of measurements made at several points. It compares this minimum distance to a set value zc and it automatically controls the servomotor 29 to move the third plate 25 and therefore also the articulation 16 in the direction which tends to cancel the difference between the minimum measured distance zc and the value setpoint.
  • the actuator 29 is controlled when the two press plates 1 and 2 are separated so that the movement of the third plate 25 does not cause significant efforts.
  • the calculation unit When the difference between the minimum distance zc and the set value exceeds a determined threshold, the calculation unit emits a signal which can control either a signal indicating that the crimping is bad or an automatic rejection of the wire carrying the terminal whose crimping is reported as defective.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
EP89430026A 1988-08-12 1989-09-15 Verfahren und Einrichtung, um maschinell Klemmen an leitende Drähte zu Crimpen und um die Crimpenhöhe genau zu Regeln Withdrawn EP0417370A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8810969A FR2635285B1 (fr) 1988-08-12 1988-08-12 Procedes et dispositifs pour sertir mecaniquement des terminaux sur des fils conducteurs et pour regler avec precision la hauteur de sertissage

Publications (1)

Publication Number Publication Date
EP0417370A1 true EP0417370A1 (de) 1991-03-20

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EP89430026A Withdrawn EP0417370A1 (de) 1988-08-12 1989-09-15 Verfahren und Einrichtung, um maschinell Klemmen an leitende Drähte zu Crimpen und um die Crimpenhöhe genau zu Regeln

Country Status (3)

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US (1) US5046241A (de)
EP (1) EP0417370A1 (de)
FR (1) FR2635285B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
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EP0637483A1 (de) * 1993-08-05 1995-02-08 Helmut Dipl.-Ing. Dischler Werkzeug zur Bearbeitung von Werkstücken
WO1999018638A1 (en) * 1997-10-07 1999-04-15 Artos Engineering Company Apparatus for crimping terminals on an electrical conductor
CN102785075A (zh) * 2012-08-30 2012-11-21 永城煤电控股集团有限公司 立式多功能液压钳
CN106855445A (zh) * 2016-12-29 2017-06-16 南京信息职业技术学院 微型压力机
CN110948203A (zh) * 2019-12-04 2020-04-03 湖州织里宝丰铝业有限公司 一种输送轨道用铜套顶推装置

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GB9012073D0 (en) * 1990-05-30 1990-07-18 Amp Gmbh Electrical terminal applicator and a crimp height adjustment plate therefor
GB9012058D0 (en) * 1990-05-30 1990-07-18 Amp Gmbh Method of,and apparatus for,controlling the crimp height of crimped electrical connections
US5195042A (en) * 1990-06-27 1993-03-16 Burndy Corporation Apparatus and method for controlling crimping of articles
EP0482436A3 (en) * 1990-10-25 1993-03-10 Westinghouse Electric Corporation Automated cure press closure system and method
US5175925A (en) * 1992-04-21 1993-01-05 Amp Incorporated Machining for attaching terminals to conductors
JP2516541B2 (ja) * 1992-12-21 1996-07-24 株式会社メカトロ常磐インターナショナル プレス機械のストロ―ク作動機構及びその作動制御方法
US5228326A (en) * 1993-02-09 1993-07-20 The Whitaker Corporation Crimp height adjustment mechanism
GB2278559B (en) * 1993-06-01 1996-08-28 Terence Robert Raynor Continuously variable crimp height
GB2278557A (en) * 1993-06-01 1994-12-07 Terence Robert Raynor Variable crimp height device.
US5697146A (en) * 1994-12-28 1997-12-16 Yazaki Corporation Apparatus for crimping terminal to electrical wire
JPH09330779A (ja) * 1996-06-12 1997-12-22 Yazaki Corp 端子圧着装置の制御方法
US5909913A (en) * 1996-09-19 1999-06-08 The Whitaker Corporation Shut height adjustment mechanism for a terminal applicator
DE10232470A1 (de) * 2002-07-17 2004-02-05 Bernhard Schäfer Werkzeug- und Sondermaschinenbau GmbH Verfahren und Vorrichtung zur Qualitätssicherung von Crimpverbindungen
US20050145117A1 (en) * 2003-09-03 2005-07-07 Ruxu Du Mechanical press with controllable mechanism
US7181942B2 (en) * 2004-03-02 2007-02-27 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Device and method for connections made between a crimp connector and wire
US7124618B1 (en) * 2006-03-07 2006-10-24 Gm Global Technology Operations, Inc. Clamp assembly for hydroforming die
US8671551B2 (en) 2011-02-01 2014-03-18 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Process for nondestructive evaluation of the quality of a crimped wire connector
US8875580B2 (en) 2011-12-13 2014-11-04 The United States Of America As Represented By The Adminstrator Of The National Aeronautics And Space Adminstration Method and apparatus to detect wire pathologies near crimped connector
US9003645B1 (en) 2013-01-17 2015-04-14 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ultrasonic device for assessing the quality of a wire crimp
JP2016515048A (ja) * 2013-03-12 2016-05-26 ヴァムコ・インターナショナル・インコーポレイテッド プレス機
US9362700B2 (en) * 2013-08-13 2016-06-07 Tyco Electronics Corporation Device for determining a crimp height of a crimped electrical connection
US9391418B2 (en) * 2013-08-13 2016-07-12 Tyco Electronics Corporation Terminal crimping device for determining a crimp height of a crimped electrical connection
US9362699B2 (en) * 2013-09-20 2016-06-07 Tyco Electronics Corporation Ultrasonic transducers for terminal crimping devices
CN103538281B (zh) * 2013-10-23 2016-03-02 宁波大学 一种压力机连杆长度的调节装置
US10153606B2 (en) 2014-10-10 2018-12-11 The United States Of America As Represented By The Administrator Of Nasa Method to control crimping processes using ultrasonic transmission analysis
FR3033450B1 (fr) * 2015-03-06 2017-02-17 Delphi Int Operations Luxembourg Sarl Procede de sertissage d'un contact electrique sur un cable et outil pour la mise en oeuvre de ce procede
AT517264B1 (de) * 2015-05-29 2018-04-15 Andritz Ag Maschf Vorrichtung zum Verdichten von gestapelten Blättern oder Scheiben aus Zellstoff
CN106736137A (zh) * 2016-11-29 2017-05-31 沈阳黎明航空发动机(集团)有限责任公司 一种用于作动筒管路焊接的可调连杆机构
US11233368B2 (en) * 2017-09-29 2022-01-25 TE Connectivity Services Gmbh Wire clamp
CN113067230B (zh) * 2018-06-28 2023-05-09 日本自动机械株式会社 电线包覆层剥离装置、端子压接装置、电线端处理装置、端子压接电线制造装置及制造方法
CN115173177B (zh) * 2022-06-06 2023-09-22 佰信电子科技(苏州)有限公司 一种线束端子的压接模具及其压接方法

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FR2226764A1 (de) * 1973-04-17 1974-11-15 Loepfe Automation
DE3540083A1 (de) * 1985-11-12 1987-05-14 Kirsten Kabeltechnik Ag Vorrichtung zum abisolieren von elektrischen leitungen und aufpressen von steckern auf dieselben

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0637483A1 (de) * 1993-08-05 1995-02-08 Helmut Dipl.-Ing. Dischler Werkzeug zur Bearbeitung von Werkstücken
AU677400B2 (en) * 1993-08-05 1997-04-24 Helmut Dischler Machining tool for work pieces
US5720199A (en) * 1993-08-05 1998-02-24 Dischler; Helmut Tool for transforming work pieces
WO1999018638A1 (en) * 1997-10-07 1999-04-15 Artos Engineering Company Apparatus for crimping terminals on an electrical conductor
CN102785075A (zh) * 2012-08-30 2012-11-21 永城煤电控股集团有限公司 立式多功能液压钳
CN106855445A (zh) * 2016-12-29 2017-06-16 南京信息职业技术学院 微型压力机
CN110948203A (zh) * 2019-12-04 2020-04-03 湖州织里宝丰铝业有限公司 一种输送轨道用铜套顶推装置
CN110948203B (zh) * 2019-12-04 2021-05-25 湖州织里宝丰铝业有限公司 一种输送轨道用铜套顶推装置

Also Published As

Publication number Publication date
US5046241A (en) 1991-09-10
FR2635285A1 (fr) 1990-02-16
FR2635285B1 (fr) 1990-11-23

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