US20040055354A1 - Method and device for quality assurance of crimp joints - Google Patents

Method and device for quality assurance of crimp joints Download PDF

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Publication number
US20040055354A1
US20040055354A1 US10/621,553 US62155303A US2004055354A1 US 20040055354 A1 US20040055354 A1 US 20040055354A1 US 62155303 A US62155303 A US 62155303A US 2004055354 A1 US2004055354 A1 US 2004055354A1
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US
United States
Prior art keywords
value
crimp
recited
setpoint
actual
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.)
Abandoned
Application number
US10/621,553
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English (en)
Inventor
Erhard Anton
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.)
Schaefer Werkzeug und Sondermaschinenbau GmbH
Original Assignee
Schaefer Werkzeug und Sondermaschinenbau 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 Schaefer Werkzeug und Sondermaschinenbau GmbH filed Critical Schaefer Werkzeug und Sondermaschinenbau GmbH
Assigned to SCHAFER WERKZEUG- UND SONDERMASCHINEN GMBH reassignment SCHAFER WERKZEUG- UND SONDERMASCHINEN GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ANTON, ERHARD
Publication of US20040055354A1 publication Critical patent/US20040055354A1/en
Priority to US11/416,022 priority Critical patent/US20060198915A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the present invention relates to a method and a device for the quality assurance of crimp joints on crimping devices.
  • German Patent Application DE 43 37 796 A1 a method for monitoring the quality of crimp joints is specified in which the force curves over time for a plurality of reference measurements are recorded as measured curves, and an averaged measured curve is formed, to which an upper and a lower curve, each some distance away, are applied so that a tolerance band results.
  • the measured curve that is determined from this crimping process is checked to see whether it lies completely within the area of the tolerance band. Faulty crimping processes can be determined in this way.
  • German Patent Application DE 198 43 156 A1 a method is described in which measured data that is obtained from a force-displacement characteristic measured during the crimping process is compared with stored setpoint data. If the force-displacement characteristic deviates from the setpoint curve, a fault is indicated.
  • the force-displacement characteristic of the tool parts is recorded for each tool during the crimping process and stored as the setpoint characteristic of the crimping device. When this tool is again used, an initial crimping process is carried out, and then it is possible to determine immediately whether this crimping process agrees with the setpoint data or not.
  • the force-displacement curve is used for this purpose.
  • German Patent Application DE 691 24 421 T2 disclosed a method or a device for adjusting crimp height in which the crimp height is automatically adjusted as a function of the crimp force.
  • the crimp force that occurs during a crimping process is compared with optimum values, and when there are deviations from those values, precision adjustment of crimp height is effected.
  • An object of the present invention is to provide a method for the quality assurance of crimp joints by which it is also possible to measure and record long-term processes reliably.
  • the present invention provides a method for the quality assurance of crimp joints on crimping devices, wherein, based on a setpoint dimension (X) of a crimp parameter (i.e. a crimp force and/or crimp height (H)), the actual value (I) of the crimp force and/or crimp height (H) is measured continuously within defined upper and/or lower tolerance dimensions (X 1 , X 2 ) of crimp force and/or crimp height (H), and a corrected re-adjustment of crimp height (H) is effected after the actual values (I) have reached a correction value (Y).
  • a setpoint dimension (X) of a crimp parameter i.e. a crimp force and/or crimp height (H)
  • the actual value (I) of the crimp force and/or crimp height (H) is measured continuously within defined upper and/or lower tolerance dimensions (X 1 , X 2 ) of crimp force and
  • the present invention also provides a device for carrying out the aforesaid method that includes a movable die part that is moved back and forth by a driving connecting rod, a stationary die part, and a mechanism for press height adjustment.
  • the driving connecting rod ( 11 ) is provided with a sliding die part ( 10 ) that slides along the rod in its longitudinal direction and with a positioning drive ( 14 ) for precision adjustment of the press height (H).
  • the positioning drive ( 14 ) is controlled by a comparative setpoint/actual-value regulating system ( 15 ).
  • the actual value of crimp force and/or crimp height during the crimping processes is measured continuously within defined upper and/or lower tolerance dimensions of crimp force and/or crimp height, and a corrected re-adjustment of crimp height is carried out after a plurality of measured actual values has reached a correction measured value.
  • a crimping device When a crimping device is started up, the machine temperature is approximately constant at the start of production. The device heats up over time, however, and the machine body expands, which results in an increase in crimp height and, at the same time, a reduction in crimp force.
  • a correction dimension that is preferably approximately half of a tolerance dimension is defined as the correction measured value. This correction measured value is at the same time the mean value of the measured actual values of the individual crimping processes.
  • the device for carrying out the method is provided with a movable die part that is moved back and forth by a driving connecting rod and a stationary die part that includes a mechanism for press height adjustment.
  • the device is distinguished by the fact that the driving connecting rod is provided with a sliding die part that slides along the rod in its longitudinal direction and with a displacement-causing positioning drive for precision adjustment of the press height, the positioning drive being controlled by a comparative setpoint/actual-value regulating system.
  • the actual value of the regulating system is picked up by an actual-value sensor mounted on the positioning drive.
  • the setpoint value may be set on the device's operator control unit or be defined by a calculated reference quantity from the crimp force measurement.
  • the setpoint value of the regulating system is then determined by the force curve during the crimping process.
  • a comparator is provided in which the setpoint value from the operator control unit or from the crimp force curve during the crimping process is stored.
  • the positioning drive conveniently includes a stepping motor and a gear unit.
  • the positioning member itself is an eccentric pin that is inserted into a hole in the driving connecting rod at right angles to the rod's direction of movement.
  • the axis of rotation of the eccentric pin is connected to the actual-value sensor, which transmits the position value of the eccentric pin to the comparator.
  • the positioning accuracy of the eccentric pin is 0.002 mm.
  • the actual value of the crimp force curve is measured during the entire crimping process and compared with the setpoint value of the crimp force curve as defined in the comparator. When there are deviations between the actual value and the setpoint value, the crimp force curve is corrected in the direction of the setpoint value by changing the press height.
  • FIG. 1 shows a schematic diagram of the production run with regulation by the press height precision adjustment feature
  • FIG. 2 shows the device with a mechanism for precision adjustment of press height.
  • FIG. 1 shows a schematic diagram of the method as it takes place during a production run.
  • X designates the setpoint dimension for crimp height H. On time axis Z, this is a straight line.
  • X 1 designates the lower tolerance dimension of crimp height H
  • X 2 designates the upper tolerance dimension of crimp height H. No objections may be raised regarding the quality of crimp joints manufactured within these tolerance dimensions, X 1 and X 2 .
  • the production run is subdivided into phases 1 through 6. In phase 1 after the crimping device is started up, the device temperature is approximately constant. The actual values of crimp height H are not shown in detail here and move within a narrow tolerance band around setpoint dimension X.
  • correction measured value Y is a mean value of a plurality of measured actual values I. This correction measured value Y amounts to approximately half of a tolerance dimension, such as tolerance dimension X 2 in this case.
  • phase 2 may be repeated a number of times, namely until the crimping device has reached its operating temperature and process stability has been established, as shown in the drawing during phase 6.
  • Heatup E of the crimping device includes phases 2 through 5 in the present exemplary embodiment.
  • temperature stability T has been established.
  • Entire production run P consequently includes phase 1, which involves approximately constant crimping device temperature, phases 2 through 5; or range E, in which heatup of the crimping device takes place, and phase 6, in which the crimping device has reached its operating temperature T and therefore its process stability.
  • FIG. 2 shows the mechanism for press height adjustment, as it is used on a device for carrying out the method.
  • the mechanism essentially includes driving connecting rod 11 , die part 10 , positioning drive 14 and comparative setpoint/actual-value regulating system 15 .
  • Driving connecting rod 11 is driven by eccentric 30 .
  • the eccentric itself is driven by shaft 31 .
  • Die part 10 is held in guide 32 and is movable in its longitudinal direction.
  • Toolholder 33 is mounted on die part 10 .
  • Press height H is the distance between these two tool parts when the tool is open.
  • Driving connecting rod 11 contains hole 17 in which positioning member 12 is installed. At the same time, positioning member 12 forms the connection between driving connecting rod 11 and die part 10 .
  • positioning member 12 In the area of hole 17 of driving connecting rod 11 , positioning member 12 is designed as an eccentric pin 18 . Positioning member 12 is connected to positioning drive 14 , which is driven by stepping motor 20 . Gear unit 21 is located in between. In addition, axis of rotation 22 of eccentric pin 18 is connected to an actual-value sensor 23 , which transmits the position value of eccentric pin 18 to comparator 24 . Setpoint value X of crimp height H is input into comparator 24 from the operator console via line 26 .
  • Comparator 24 compares actual values I with setpoint value X and gives corresponding regulating signals to stepping motor 20 via line 27 . At the same time, actual value I of the crimp force monitoring device is input into comparator 24 via line 28 so that the crimp force may also be used for regulating the mechanism.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Wire Processing (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
US10/621,553 2002-07-17 2003-07-17 Method and device for quality assurance of crimp joints Abandoned US20040055354A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/416,022 US20060198915A1 (en) 2002-07-17 2006-05-01 Method and device for quality assurance of crimp joints

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10232470A DE10232470A1 (de) 2002-07-17 2002-07-17 Verfahren und Vorrichtung zur Qualitätssicherung von Crimpverbindungen
DE10232470.0-34 2002-07-17

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/416,022 Division US20060198915A1 (en) 2002-07-17 2006-05-01 Method and device for quality assurance of crimp joints

Publications (1)

Publication Number Publication Date
US20040055354A1 true US20040055354A1 (en) 2004-03-25

Family

ID=27798315

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/621,553 Abandoned US20040055354A1 (en) 2002-07-17 2003-07-17 Method and device for quality assurance of crimp joints
US11/416,022 Abandoned US20060198915A1 (en) 2002-07-17 2006-05-01 Method and device for quality assurance of crimp joints

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/416,022 Abandoned US20060198915A1 (en) 2002-07-17 2006-05-01 Method and device for quality assurance of crimp joints

Country Status (7)

Country Link
US (2) US20040055354A1 (es)
EP (1) EP1383212B1 (es)
AT (1) ATE306132T1 (es)
DE (2) DE10232470A1 (es)
ES (1) ES2249660T3 (es)
NO (1) NO20033215D0 (es)
PL (1) PL361294A1 (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100372195C (zh) * 2005-07-13 2008-02-27 南京埃斯顿数字技术有限公司 通用端子压着机压力监控系统
US20120192407A1 (en) * 2011-02-01 2012-08-02 U.S.A. As Represented By The Administrator Of The National Aeronautics And Space Administration Process and Apparatus for Nondestructive Evaluation of the Quality of a Crimped Wire 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
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
US20220085562A1 (en) * 2019-01-16 2022-03-17 Harting Electric Gmbh & Co. Kg Method and device for checking the quality of a crimping

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006014521A1 (de) 2006-03-29 2008-10-09 Schäfer Werkzeug- und Sondermaschinenbau GmbH Crimpeinheit
DE102006032363B3 (de) * 2006-07-13 2007-12-06 Schäfer Werkzeug- und Sondermaschinenbau GmbH Vorrichtung zum Ancrimpen eines Kontaktelementes
DE102013211045A1 (de) * 2013-06-13 2014-12-18 Otto Bihler Handels-Beteiligungs-Gmbh Umformverfahren mit Regelung einer geometrischen Eigenschaft eines Werkstücks und Vorrichtung dazu

Citations (8)

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Publication number Priority date Publication date Assignee Title
US4587725A (en) * 1983-08-09 1986-05-13 Ckd Corporation Terminal crimping apparatus
US4800050A (en) * 1985-11-22 1989-01-24 Ortwin Hahn Adaptive control process for foaming and fusing plastics
US5046241A (en) * 1988-08-12 1991-09-10 Ricard Claude F Processes and devices for mechanically crimping terminals on conducting wires
US5095599A (en) * 1990-05-30 1992-03-17 Amp Incorporated Electrical terminal applicator and a crimp height adjustment plate therefor
US5168736A (en) * 1988-11-22 1992-12-08 Kabelwerke Reinshagen Gmbh Crimping machine
US5697146A (en) * 1994-12-28 1997-12-16 Yazaki Corporation Apparatus for crimping terminal to electrical wire
US6067828A (en) * 1997-06-30 2000-05-30 Komax Holding Ag Crimping apparatus
US6418769B1 (en) * 1998-09-21 2002-07-16 Sle Electronic Gmbh Method for quality assurance of crimp connections produced by a crimping device and crimping tool and crimping device therefor

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DE2411340A1 (de) * 1974-03-09 1975-09-18 Hasenclever Gmbh Maschf Schmiedepresse
US4025999A (en) * 1976-02-18 1977-05-31 Joseph Wolyn Adjustable crimp die assembly
WO1982003491A1 (en) * 1981-03-31 1982-10-14 Hara Yoshihumi Iron core laminate manufacturing apparatus
US4857725A (en) * 1988-07-06 1989-08-15 Santa Barbara Research Center Differential offset corrected current mirror
US4856186A (en) * 1988-11-04 1989-08-15 Amp Incorporated Apparatus and method for determination of crimp height
US4916810A (en) * 1989-05-12 1990-04-17 Amp Incorporated Method and apparatus for terminating wires to terminals
DE4014221A1 (de) * 1989-05-12 1990-11-15 Siemens Ag Verfahren und vorrichtung zur fertigungsueberwachung beim crimpen von flexiblen, abisolierten adern von leitungen
JPH0759333B2 (ja) * 1989-09-22 1995-06-28 モレックス インコーポレーテッド 圧着ツールの摩損を管理する圧着プレス及びその方法
GB8927467D0 (en) * 1989-12-05 1990-02-07 Amp Gmbh Crimped connection quality control
US5275032A (en) * 1990-05-30 1994-01-04 The Whitaker Corporation Method and apparatus for controlling the crimp height of crimped electrical connections
GB9012058D0 (en) * 1990-05-30 1990-07-18 Amp Gmbh Method of,and apparatus for,controlling the crimp height of crimped electrical connections
GB2275881B (en) * 1990-10-17 1995-01-18 Towa Corp Method of adjusting setting position of reciprocating sliding member and press using such apparatus
US5491994A (en) * 1991-12-11 1996-02-20 Diamond Die & Mold Company Crimp height monitor
US5414926A (en) * 1992-10-09 1995-05-16 Sumitomo Wiring Systems, Ltd. Terminal crimping apparatus
EP0622873A3 (en) * 1993-04-26 1996-03-27 Whitaker Corp Tappet drive mechanism.
US5443549A (en) * 1993-06-15 1995-08-22 Yazaki Corporation Terminal crimping machine
EP0643457B1 (en) * 1993-09-14 1997-06-11 Molex Incorporated Electrical terminal applicator with improved crimp height adjustment plate means
DE4337796A1 (de) * 1993-11-05 1995-05-11 Abstron Electronics Gmbh Verfahren zum Überwachen der Qualität von Crimpverbindungen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587725A (en) * 1983-08-09 1986-05-13 Ckd Corporation Terminal crimping apparatus
US4800050A (en) * 1985-11-22 1989-01-24 Ortwin Hahn Adaptive control process for foaming and fusing plastics
US5046241A (en) * 1988-08-12 1991-09-10 Ricard Claude F Processes and devices for mechanically crimping terminals on conducting wires
US5168736A (en) * 1988-11-22 1992-12-08 Kabelwerke Reinshagen Gmbh Crimping machine
US5095599A (en) * 1990-05-30 1992-03-17 Amp Incorporated Electrical terminal applicator and a crimp height adjustment plate therefor
US5697146A (en) * 1994-12-28 1997-12-16 Yazaki Corporation Apparatus for crimping terminal to electrical wire
US6067828A (en) * 1997-06-30 2000-05-30 Komax Holding Ag Crimping apparatus
US6418769B1 (en) * 1998-09-21 2002-07-16 Sle Electronic Gmbh Method for quality assurance of crimp connections produced by a crimping device and crimping tool and crimping device therefor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100372195C (zh) * 2005-07-13 2008-02-27 南京埃斯顿数字技术有限公司 通用端子压着机压力监控系统
US20120192407A1 (en) * 2011-02-01 2012-08-02 U.S.A. As Represented By The Administrator Of The National Aeronautics And Space Administration Process and Apparatus for Nondestructive Evaluation of the Quality of a Crimped Wire Connector
WO2012106390A2 (en) * 2011-02-01 2012-08-09 United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Process and apparatus for nondestructive evaluation of the quality of a crimped wire connector
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
WO2012106390A3 (en) * 2011-02-01 2014-04-17 United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Process and apparatus for nondestructive evaluation of the quality of a crimped wire connector
US9537277B2 (en) 2011-02-01 2017-01-03 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
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
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
US20220085562A1 (en) * 2019-01-16 2022-03-17 Harting Electric Gmbh & Co. Kg Method and device for checking the quality of a crimping

Also Published As

Publication number Publication date
EP1383212A1 (de) 2004-01-21
DE10232470A1 (de) 2004-02-05
US20060198915A1 (en) 2006-09-07
EP1383212B1 (de) 2005-10-05
DE50301290D1 (de) 2005-11-10
ES2249660T3 (es) 2006-04-01
NO20033215D0 (no) 2003-07-16
ATE306132T1 (de) 2005-10-15
PL361294A1 (en) 2004-01-26

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AS Assignment

Owner name: SCHAFER WERKZEUG- UND SONDERMASCHINEN GMBH, GERMAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ANTON, ERHARD;REEL/FRAME:014661/0822

Effective date: 20030807

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION