US20070181639A1 - Pressure welding machine and pressure welding method - Google Patents

Pressure welding machine and pressure welding method Download PDF

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Publication number
US20070181639A1
US20070181639A1 US10/599,390 US59939005A US2007181639A1 US 20070181639 A1 US20070181639 A1 US 20070181639A1 US 59939005 A US59939005 A US 59939005A US 2007181639 A1 US2007181639 A1 US 2007181639A1
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US
United States
Prior art keywords
pressure welding
accordance
welding machine
workpiece
adjusting
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
US10/599,390
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English (en)
Inventor
Frank Rudolph
Thomas Hauck
Harald Meyer
Klaus Schneider
Manfred Menzinger
Otmar Fischer
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.)
KUKA Systems GmbH
Original Assignee
KUKA Schweissanlagen 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 KUKA Schweissanlagen GmbH filed Critical KUKA Schweissanlagen GmbH
Assigned to KUKA SCHWEISSANLAGEN GMBH reassignment KUKA SCHWEISSANLAGEN GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FISCHER, OTMAR, HAUCK, THOMAS, MENZINGER, MANFRED, MEYER, HARALD, RUDOLPH, FRANK, SCHNEIDER, KLAUS
Publication of US20070181639A1 publication Critical patent/US20070181639A1/en
Assigned to KUKA SYSTEMS GMBH reassignment KUKA SYSTEMS GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: KUKA SCHWEISSANLAGEN GMBH
Priority to US12/768,097 priority Critical patent/US9802269B2/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/121—Control circuits therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding

Definitions

  • the present invention pertains to a pressure welding machine and a pressure welding method.
  • Such a pressure welding machine is known in the form of a double-head friction welding machine from EP 0 246 239 B1. It comprises a frame with a machine bed, at which two friction welding heads are mounted in such a way that they are movable in opposite directions along a common feed axis. They are moved by two adjusting units with feed drives along the feed axis. The adjusting units are mounted adjustably at the machine frame and are fixed individually in the desired position at the machine bed by hydraulically actuated friction brakes. A central workpiece is connected to additional workpieces on both sides by friction welding with the double-head friction welding machine. The spindle rotations of the two friction welding heads are synchronized by a common countershaft provided with a motor and a brake.
  • EP 0 059 544 A1 shows another friction welding machine with spindles that are likewise synchronized by means of a countershaft.
  • the adjusting units are fixed here rigidly and unmovably to the machine bed.
  • the object of the present invention is to provide a better pressure welding machine along with a pressure welding method.
  • a pressure welding machine is provided with a frame, two welding heads, which are movable along a feed axis, and with two adjusting units with feed drives for the welding heads.
  • the two adjusting units are mounted axially movably at the same frame and are connected among one another to an adjusting drive by means of a common adjusting element and are supported.
  • the pressure welding machine according to the invention has the advantage of requiring a substantially reduced design effort, and a larger working range and better accessibility of the workplace are also achieved at the same time.
  • the forces occurring during upsetting are absorbed in a closed system of forces via the adjusting element, which relieves the load on the frame construction.
  • adjustment of the adjusting units in both directions with the feed drives along a preferably common and continuous guide plane can be achieved by means of the adjusting element.
  • this adjustment may be symmetrical.
  • Special advantages are offered here by the adjusting element being designed as a continuous spindle with two threads directed in opposite directions, which is connected to the adjusting units via corresponding nut mounts.
  • a self-locking motion thread which can absorb and support the strong upsetting forces, is favorable here.
  • a preferably likewise displaceable central clamping device which is equipped with two workpiece holders, which are connected to the respective adjusting units associated with them via carriage adjusters, are present for the central workpiece.
  • the central clamping device and the adjusting units can be positioned simultaneously and synchronously.
  • a spring-loaded connection between the carriage adjusters and the workpiece holders makes possible an evading motion of the workpiece holders to absorb the upsetting deformation of the central workpiece during the upsetting stroke.
  • the pressure welding machine may have, moreover, a measuring means, which makes it possible to measure the true feeds and the pure shortenings of the workpiece during pressure welding without the elastic deformations of the central workpiece that occur during upsetting. It is possible as a result to also extrapolate the process parameters determined during a pressure welding process for certain workpieces and workpiece lengths to other workpieces of the same kind but with different lengths. This was hitherto impossible because the elastic deformation of the central workpiece, which likewise changed during a change of the workpiece lengths and thus affected the process parameters, was always contained in the path measured values.
  • the pressure welding machine being claimed can operate with any desired pressure welding method. This may be, e.g., friction welding or welding with an arc moved magnetically or in another manner.
  • the workpieces welded together may be rotationally symmetrical, but this is not a compulsory prerequisite.
  • FIG. 1 is a side view of a pressure welding machine in the opened inoperative position
  • FIGS. 1 through 3 show schematic side views and different operating positions of a pressure welding machine ( 1 ).
  • the pressure welding machine ( 1 ) is used to weld two, three or more workpieces ( 2 , 3 , 4 ), wherein one or more outer workpieces ( 3 , 4 ) are welded to a central workpiece ( 2 ) at both ends.
  • the pressure welding technique may be of any desired type. For example, it may be friction welding with direct motor drive or flywheel drive or welding with an arc moved magnetically or in another way, etc.
  • the workpieces ( 2 , 3 , 4 ) are arranged along a preferably common feed axis or upsetting axis ( 41 ) and are moved toward one another and connected to one another at the end of the pressure welding operation by an upsetting stroke.
  • the pressure welding machine ( 1 ) is designed as a so-called double-head machine. It comprises a frame ( 10 ) with a central clamping device ( 5 ) for the central workpiece ( 2 ), two mobile welding heads ( 13 , 14 ) adjoining same on both sides and two adjusting units ( 17 , 18 ) that in turn adjoin the latter on both sides with feed drives ( 23 ) for the welding heads ( 13 , 14 ).
  • the pressure welding machine ( 1 ) has, furthermore, a computerized, programmable machine and process control (not shown).
  • the central clamping device ( 5 ), the welding heads ( 13 , 14 ) and the adjusting units ( 17 , 18 ) are all mounted at the frame ( 10 ) movably along the preferably common feed axis or upsetting axis ( 41 ) by means of travel carriages ( 8 , 9 , 15 , 16 , 19 , 20 ) and are mounted and guided axially movably at a preferably likewise common carriage guide ( 12 ).
  • the mounting and guiding may be brought about, e.g., by means of nontilting roller bearings or the like.
  • the two outer adjusting units ( 17 , 18 ) are connected to one another and supported by means of a common adjusting element ( 26 ) with an adjusting drive ( 25 ).
  • the adjusting element ( 26 ) is preferably designed as a continuous spindle ( 27 ) with two threads ( 28 , 29 ), which are arranged at least at the end and are directed in opposite directions. These threads ( 28 , 29 ) are designed each as motion threads, especially as left-handed and right-handed screw threads. They may be, e.g., trapezoid threads.
  • the threads ( 28 , 29 ) mesh with nuts ( 21 , 22 ), which are connected to the adjusting units ( 17 , 18 ) via extension arms.
  • the spindle ( 27 ) is arranged under the welding heads ( 13 , 14 ) and the adjusting units ( 17 , 18 ) and is mounted rotatably in a machine bed ( 11 ).
  • the spindle is located between the laterally spaced rails of the carriage guide ( 12 ) and may be arranged at the same level as these rails or just below them.
  • the threads ( 28 , 29 ) and/or the spindle ( 27 ) may be fixed in any desired and suitable manner in the inoperative position when needed, e.g., by means of brakes, a thread self-locking mechanism or the like.
  • the adjusting element ( 26 ) may have another suitable design. This also applies to the adjusting drive ( 25 ) of the adjusting element. It is designed as a spindle drive in the exemplary embodiment being shown and comprises a motor ( 30 ), which can be accurately controlled for precise positioning, preferably an electric motor. A reducing gear may be inserted between the motor ( 30 ) and the spindle ( 27 ).
  • the carriage adjuster ( 31 , 32 ) is fixed rigidly, e.g., to the travel carriage ( 19 , 20 ) of the adjusting unit ( 17 , 18 ) and is moved along during the travel motions of the adjusting unit ( 17 , 18 ).
  • the carriage adjusters ( 31 , 32 ) engage associated workpiece holders ( 6 , 7 ) or holder carriages ( 8 , 9 ) at the other end via one or more carriers ( 33 ) in a positive-locking manner. Carrying takes now place during the forward and backward travel.
  • the welding heads ( 13 , 14 ) are designed corresponding to the selected welding technique and are equipped with travel carriages ( 15 , 16 ). They have chucks to receive and clamp the left and right workpieces ( 3 , 4 ).
  • the welding heads ( 13 , 14 ) may have a rotary drive for the chuck, as a result of which the corresponding workpiece ( 3 , 4 ) is rotated in relation to the preferably stationary central workpiece ( 2 ) for friction.
  • the arc unit needed for this is arranged at the welding heads ( 13 , 14 ) and/or at the central clamping device ( 5 ) with a coil for deflecting the arc, etc. If other pressure welding techniques are used, which bring about heating of the boundary surfaces of the workpieces ( 2 , 3 , 4 ) to be welded together in another manner, the welding heads ( 13 , 14 ) have a correspondingly different design.
  • the feed drive ( 23 ) of the corresponding adjusting unit ( 17 , 18 ) acts on the welding heads ( 13 , 14 ) on the rear side.
  • the feed drive ( 23 ) is preferably aligned with the workpieces ( 2 , 3 , 4 ) in the common feed axis ( 41 ) or is possibly arranged in parallel thereto at a closely spaced location.
  • the feed drive ( 23 ) brings about the feeding of the corresponding welding head ( 13 , 14 ) from the withdrawn inoperative position shown in FIG. 1 into the working position shown in FIG. 2 .
  • the boundary surfaces of the adjacent workpieces ( 2 , 3 , 4 ) come into contact depending on the welding process in the working position or are positioned at a certain distance from one another. Depending on the welding process, they are held in this position for some time or are moved on.
  • the feed drives ( 23 ) are preferably of the same design. They may have any desired embodiment. In the exemplary embodiment being shown, they are hydraulic cylinders ( 24 ), which are arranged and supported in the structures of the adjusting units ( 17 , 18 ). The piston rods of these cylinders are connected to the corresponding welding head ( 13 , 14 ). As an alternative, they may be electric motor drives with extensible spindles or the like. Besides, any other desired types of drive technique are possible.
  • the pressure welding machine ( 1 ) has a measuring means ( 35 ) for measuring the true feeds during the welding process and the pure workpiece shortenings occurring in the process without being affected by the above-mentioned elastic upsetting deformation of the central workpiece ( 2 ).
  • the measuring means ( 35 ) is of independent significance and can also be used successfully in other types of pressure welding machines, especially those according to the state of the art. This applies, e.g., to pressure welding machines ( 1 ) with stationary adjusting units ( 17 , 18 ) or stationarily arranged feed drives ( 23 ).
  • the measuring means ( 35 ) has at least one measuring unit ( 36 , 37 ) arranged between a workpiece holder ( 6 , 7 ) and the associated welding head ( 13 , 14 ).
  • the measuring units ( 36 , 37 ) comprise each a rod- or bar-shaped scale ( 38 ) and a measuring head ( 39 ), which are arranged movably in relation to one another at the workpiece holder ( 6 , 7 ) and at the respective associated welding head ( 13 , 14 ).
  • the relative axial motion between the workpiece holder ( 6 , 7 ) and the welding head ( 13 , 14 ) can be measured with high accuracy by means of the measuring units ( 36 , 37 ).
  • This relative motion indicates the exact friction and upsetting path during friction welding.
  • the component shortening of the entire welded part, brought about by the friction welding is obtained from the sum of the left and right paths.
  • the workpieces are subsequently brought into spaced locations to ignite the arc after an initial contact, and the positioning necessary for the process and the distance of the workpieces ( 2 , 3 , 4 ) to be welded together are set by means of the measuring units ( 36 , 37 ) and the motion is carried out to reach the given position.
  • the resulting shortening of the workpiece can be determined after the subsequent upsetting stroke.
  • the measuring means ( 35 ) may have a central measuring unit ( 40 ), which is arranged, e.g., between the workpiece holders and/or optionally also between the welding heads ( 13 , 14 ).
  • the overall length of the workpieces ( 2 , 3 , 4 ) before the welding and also after the welding can thus be determined.
  • the central measuring unit ( 40 ) is schematically indicated in FIG. 1 . It may have any desired and suitable design and likewise have one or more rod-shaped scales ( 38 ) and measuring heads ( 39 ).
  • the welding heads ( 13 , 14 ), the adjusting drive ( 25 ), the adjusting units ( 17 , 18 ) with the feed drives ( 23 ) and the measuring means ( 35 ) are connected to the machine and process control and are controlled and regulated by this with suitable programs.
  • the frame ( 11 ) may also have a different design.
  • the type and the arrangement of the travel carriages ( 8 , 9 , 15 , 16 , 19 , 20 ) are selectable as desired. This also applies to the type and the arrangement of the carriage guide ( 12 ). While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise without departing from such principles.
US10/599,390 2004-07-01 2005-06-23 Pressure welding machine and pressure welding method Abandoned US20070181639A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/768,097 US9802269B2 (en) 2004-07-01 2010-04-27 Pressure welding machine and pressure welding method

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202004010386.9 2004-07-01
DE202004010386U DE202004010386U1 (de) 2004-07-01 2004-07-01 Pressschweißmaschine
PCT/EP2005/006766 WO2006002820A2 (de) 2004-07-01 2005-06-23 Pressschweissmaschine und pressschweissverfahren

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/006766 A-371-Of-International WO2006002820A2 (de) 2004-07-01 2005-06-23 Pressschweissmaschine und pressschweissverfahren

Related Child Applications (1)

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US12/768,097 Continuation US9802269B2 (en) 2004-07-01 2010-04-27 Pressure welding machine and pressure welding method

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US20070181639A1 true US20070181639A1 (en) 2007-08-09

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US10/599,390 Abandoned US20070181639A1 (en) 2004-07-01 2005-06-23 Pressure welding machine and pressure welding method
US12/768,097 Active 2029-03-28 US9802269B2 (en) 2004-07-01 2010-04-27 Pressure welding machine and pressure welding method

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Application Number Title Priority Date Filing Date
US12/768,097 Active 2029-03-28 US9802269B2 (en) 2004-07-01 2010-04-27 Pressure welding machine and pressure welding method

Country Status (6)

Country Link
US (2) US20070181639A1 (de)
EP (1) EP1761357B1 (de)
JP (1) JP2008504131A (de)
AT (1) ATE400393T1 (de)
DE (2) DE202004010386U1 (de)
WO (1) WO2006002820A2 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014186227A1 (en) * 2013-05-13 2014-11-20 Dana Automotive Systems Group, Llc A method of joining workpieces
CN104889656A (zh) * 2015-06-26 2015-09-09 长春轨道客车股份有限公司 用于城轨客车底架边梁合成焊接的辅助定位装置
CN105436694A (zh) * 2014-08-18 2016-03-30 江苏锐成机械有限公司 双头摩擦焊机用复合床身
US20170304932A1 (en) * 2014-11-12 2017-10-26 Kuka Industries Gmbh Pressure welding device and pressure welding method
US20170326667A1 (en) * 2014-11-12 2017-11-16 Kuka Industries Gmbh Pressure welding device and pressure welding method
US10421149B2 (en) * 2014-11-12 2019-09-24 Kuka Industries Gmbh Pressure welding device and pressure welding method
CN114160957A (zh) * 2021-11-25 2022-03-11 江苏祥泰电子科技有限公司 一种应用于电子产品的圆柱头摩擦焊接装置

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DE202012103219U1 (de) 2012-08-24 2013-12-02 Kuka Systems Gmbh Pressschweißvorrichtung
JP6530882B2 (ja) * 2012-12-27 2019-06-12 高周波熱錬株式会社 ラック製造装置及びラック製造方法
JP6343431B2 (ja) * 2013-06-03 2018-06-13 高周波熱錬株式会社 ラック製造方法及び中空ラックバー
DE202014105435U1 (de) * 2014-11-12 2016-01-25 Kuka Systems Gmbh Pressschweißvorrichtung
DE202014105432U1 (de) * 2014-11-12 2016-01-25 Kuka Systems Gmbh Pressschweißvorrichtung
KR102601090B1 (ko) * 2015-11-04 2023-11-10 고오슈우하네쓰렌 가부시기가이샤 랙 바 제조 방법
DE102016212301A1 (de) * 2016-07-06 2018-01-11 Thyssenkrupp Ag Zahnstange und ein Verfahren zur Herstellung einer Zahnstange für ein Lenkgetriebe eines Kraftfahrzeugs
DE102016212304B4 (de) 2016-07-06 2018-02-22 Thyssenkrupp Ag Verfahren zur Herstellung einer Zahnstange für ein Lenkgetriebe eines Kraftfahrzeugs, sowie Zahnstange
DE102016212307B4 (de) 2016-07-06 2018-02-22 Thyssenkrupp Ag Verfahren zur Herstellung einer Zahnstange für ein Kraftfahrzeug, sowie Zahnstange für ein Lenkgetriebe
DE102016212308B4 (de) * 2016-07-06 2018-02-22 Thyssenkrupp Ag Verfahren zur Herstellung einer Zahnstange für ein Lenkgetriebe eines Kraftfahrzeugs, sowie Zahnstange
DE102016212303A1 (de) 2016-07-06 2018-01-11 Thyssenkrupp Ag Zahnstange und ein Verfahren zur Herstellung einer Zahnstange für ein Lenkgetriebe eines Kraftfahrzeugs
CN106271816A (zh) * 2016-08-31 2017-01-04 宁波方力科技股份有限公司 波纹管开槽机的导向机构
CN109014712A (zh) * 2018-07-17 2018-12-18 无为县红宇通信器材有限责任公司 一种用于水泥电线杆内部钢筋的焊接设备
JP7227073B2 (ja) * 2019-05-23 2023-02-21 ファナック株式会社 ワーク回転装置およびロボットシステム
CN113399516B (zh) * 2021-06-23 2023-05-09 淮安益恒精密机械制造有限公司 一种组装型钢勺加工方法及加工装置

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US4414046A (en) * 1981-02-26 1983-11-08 Gkn Transmissions Limited Friction welding
US4733814A (en) * 1985-03-02 1988-03-29 Penman Robert D Friction welding apparatus
US4812090A (en) * 1986-01-28 1989-03-14 Mazda Motor Corporation Method of and apparatus for adjusting the weight of a workpiece
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014186227A1 (en) * 2013-05-13 2014-11-20 Dana Automotive Systems Group, Llc A method of joining workpieces
US10265809B2 (en) 2013-05-13 2019-04-23 Dana Automotive Systems Group, Llc Method of joining workpieces using a sliding part coupling portion
CN105436694A (zh) * 2014-08-18 2016-03-30 江苏锐成机械有限公司 双头摩擦焊机用复合床身
US20170304932A1 (en) * 2014-11-12 2017-10-26 Kuka Industries Gmbh Pressure welding device and pressure welding method
US20170326667A1 (en) * 2014-11-12 2017-11-16 Kuka Industries Gmbh Pressure welding device and pressure welding method
US10421149B2 (en) * 2014-11-12 2019-09-24 Kuka Industries Gmbh Pressure welding device and pressure welding method
US10543550B2 (en) * 2014-11-12 2020-01-28 Kuka Deutschland Gmbh Pressure welding device and pressure welding method
US10646953B2 (en) * 2014-11-12 2020-05-12 Kuka Deutschland Gmbh Pressure welding device and pressure welding method
CN104889656A (zh) * 2015-06-26 2015-09-09 长春轨道客车股份有限公司 用于城轨客车底架边梁合成焊接的辅助定位装置
CN114160957A (zh) * 2021-11-25 2022-03-11 江苏祥泰电子科技有限公司 一种应用于电子产品的圆柱头摩擦焊接装置

Also Published As

Publication number Publication date
EP1761357B1 (de) 2008-07-09
WO2006002820A2 (de) 2006-01-12
US9802269B2 (en) 2017-10-31
DE502005004655D1 (de) 2008-08-21
EP1761357A2 (de) 2007-03-14
WO2006002820A3 (de) 2006-07-13
JP2008504131A (ja) 2008-02-14
ATE400393T1 (de) 2008-07-15
US20100206861A1 (en) 2010-08-19
DE202004010386U9 (de) 2006-04-20
DE202004010386U1 (de) 2005-11-17

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AS Assignment

Owner name: KUKA SCHWEISSANLAGEN GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:RUDOLPH, FRANK;HAUCK, THOMAS;MEYER, HARALD;AND OTHERS;REEL/FRAME:018312/0982

Effective date: 20060911

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Owner name: KUKA SYSTEMS GMBH, GERMANY

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Effective date: 20070813

Owner name: KUKA SYSTEMS GMBH,GERMANY

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STCB Information on status: application discontinuation

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