US20070271979A1 - Punch For Producing Holes In The Wall Of Hollow Parts Subjected To The Action Of Internal High Pressure - Google Patents

Punch For Producing Holes In The Wall Of Hollow Parts Subjected To The Action Of Internal High Pressure Download PDF

Info

Publication number
US20070271979A1
US20070271979A1 US10/582,476 US58247604A US2007271979A1 US 20070271979 A1 US20070271979 A1 US 20070271979A1 US 58247604 A US58247604 A US 58247604A US 2007271979 A1 US2007271979 A1 US 2007271979A1
Authority
US
United States
Prior art keywords
punch
high pressure
wall
internal high
hollow parts
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
US10/582,476
Other languages
English (en)
Inventor
Stephan Kuschel
Frank Schmuck
Jens Schult
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Assigned to DAIMLERCHRYSLER AG reassignment DAIMLERCHRYSLER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHULT, JENS, SCHMUCK, FRANK, KUSCHEL, STEPHAN
Publication of US20070271979A1 publication Critical patent/US20070271979A1/en
Assigned to DAIMLER AG reassignment DAIMLER AG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: DAIMLERCHRYSLER AG
Assigned to DAIMLER AG reassignment DAIMLER AG CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NO. 10/567,810 PREVIOUSLY RECORDED ON REEL 020976 FRAME 0889. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME. Assignors: DAIMLERCHRYSLER AG
Abandoned legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/035—Deforming tubular bodies including an additional treatment performed by fluid pressure, e.g. perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies

Definitions

  • the invention relates to the design of punches for producing holes in the walls of hollow parts, the part being subjected to the action of high pressure in the interior by a medium during the punching.
  • German Patent Document DE 43 22 063 C2 discloses a method and a device for cutting out a blank from a wall of a hollow body produced according to the internal high pressure forming process.
  • the blank is cut out directly after the internal high pressure forming by means of a punch acting from outside on the lateral surface of the hollow body.
  • the driven punch passes through the internal high pressure forming tool.
  • a tool of the generic type is described in German Patent Document DE 199 34 663 A1.
  • the object of the invention is to design the punches for use of the generic type in such a way that a drop in the internal high pressure when cutting through the wall of the part is largely avoided.
  • the punch is designed so as to taper at an angle in the direction of the cutting edge in its region plunging into the part to be punched.
  • the material in the region of the hole wall is upset in accordance with the tapered outer contour of the punch, and the hole is immediately sealed by the punch.
  • the punches can be moved slowly and asynchronously to one another with respect to time.
  • the quality of the holes produced and the process reliability increase considerably as a result.
  • the cost in terms of equipment can be kept correspondingly low, since the tools can be of simpler and more compact design. Thus no expensive measures are required for achieving synchronized sequences, such as tool bridges or electronic path control.
  • FIG. 1 shows a diagrammatic illustration of a punch before the punching
  • FIG. 2 shows a diagrammatic illustration of a punch after the punching.
  • FIG. 1 shows, in a partial section, a hollow part 2 which is preferably produced by the internal high pressure forming process and is still subjected to the action of internal high pressure and which bears with its outer contour against the inner wall of an internal high pressure forming tool 4 .
  • a punch 1 is arranged in such a way as to be movable in the arrow direction preferably by means of a hydraulic drive (not shown).
  • the punch 1 In its region plunging into the part 2 , the punch 1 is designed to taper conically toward the cutting edge 3 .
  • the angle of taper is in this case greater than 0° and is at most 30°, but preferably 1° to 3°.
  • the cutting edge 3 of the punch 1 is set back slightly relative to the mold inner wall of the internal high pressure forming tool 4 .
  • the punch 1 is moved in the direction of the part 2 , and the cutting edge 3 cuts through the wall of the part in the process.
  • the conically designed region of the punch 1 upsets the material in the region of the hole wall 5 and the hole is simultaneously sealed by the punch 1 . Therefore no drop in the internal high pressure occurs ( FIG. 2 ).
US10/582,476 2003-12-13 2004-11-17 Punch For Producing Holes In The Wall Of Hollow Parts Subjected To The Action Of Internal High Pressure Abandoned US20070271979A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10358500A DE10358500B4 (de) 2003-12-13 2003-12-13 Lochstempel zum Herstellen von Lochungen in der Wandung von mit Innenhochdruck beaufschlagten hohlen Bauteilen
DE10358500.1 2003-12-13
PCT/EP2004/013014 WO2005056212A1 (de) 2003-12-13 2004-11-17 Lochstempel zum herstellen von lochungen in der wandung von mit innenhochdruck beaufschlagten hohlen bauteilen

Publications (1)

Publication Number Publication Date
US20070271979A1 true US20070271979A1 (en) 2007-11-29

Family

ID=34672720

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/582,476 Abandoned US20070271979A1 (en) 2003-12-13 2004-11-17 Punch For Producing Holes In The Wall Of Hollow Parts Subjected To The Action Of Internal High Pressure

Country Status (4)

Country Link
US (1) US20070271979A1 (de)
CA (1) CA2549547A1 (de)
DE (1) DE10358500B4 (de)
WO (1) WO2005056212A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090038428A1 (en) * 2005-02-15 2009-02-12 Nsk Ltd. Metal Member With Through Hole And Manufacturing Method Therefor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015114074B4 (de) 2015-08-25 2018-07-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Trennen eines Werkstückes

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4930384A (en) * 1988-02-24 1990-06-05 Sanko Industries Limited Die for notching hollow tubing
US5460026A (en) * 1993-07-02 1995-10-24 Wilhelm Schafer Maschinenbau Gmbh & Co. Method of and apparatus for the cutting of an opening in a hollow body
US5666840A (en) * 1996-06-13 1997-09-16 General Motors Corporation Method for piercing two aligned holes in a hydroformed tube
US6418607B1 (en) * 1997-05-12 2002-07-16 Dr. Meleghy Hydroforming Gmbh & Co. Kg Method and apparatus for fabricating a hollow body
US6591648B1 (en) * 2002-06-24 2003-07-15 Greenville Tool & Die Company Method of stamping and piercing a tube
US6658908B1 (en) * 2002-08-20 2003-12-09 General Motors Corporation Punch for piercing and sealing hydroformed parts
US7159426B1 (en) * 2005-09-27 2007-01-09 Gm Global Technology Operations, Inc. Quick change assembly for hydroforming punches
US7204113B1 (en) * 2006-09-29 2007-04-17 Gm Global Technology Operations, Inc. Punch for hydroforming die
US7293442B1 (en) * 2007-03-26 2007-11-13 Gm Global Technology Operations, Inc. Method for hydroforming a ring-shaped tubular structure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2317791A (en) * 1942-04-04 1943-04-27 Miller George Henry Punch and die
US3327516A (en) * 1964-07-22 1967-06-27 Carroll W Hoshour Percussion tool holder
DE29801715U1 (de) * 1998-02-03 1998-04-09 Schwitzgebel Egon Vorrichtung zum Stanzen von Werkstücken
DE19934663A1 (de) * 1999-07-23 2001-01-25 Anton Bauer Werkzeug Und Masch Vorrichtung zum Lochen von Werkstücken beim Innenhochdruckumformen

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4930384A (en) * 1988-02-24 1990-06-05 Sanko Industries Limited Die for notching hollow tubing
US5460026A (en) * 1993-07-02 1995-10-24 Wilhelm Schafer Maschinenbau Gmbh & Co. Method of and apparatus for the cutting of an opening in a hollow body
US5666840A (en) * 1996-06-13 1997-09-16 General Motors Corporation Method for piercing two aligned holes in a hydroformed tube
US6418607B1 (en) * 1997-05-12 2002-07-16 Dr. Meleghy Hydroforming Gmbh & Co. Kg Method and apparatus for fabricating a hollow body
US6591648B1 (en) * 2002-06-24 2003-07-15 Greenville Tool & Die Company Method of stamping and piercing a tube
US6658908B1 (en) * 2002-08-20 2003-12-09 General Motors Corporation Punch for piercing and sealing hydroformed parts
US7159426B1 (en) * 2005-09-27 2007-01-09 Gm Global Technology Operations, Inc. Quick change assembly for hydroforming punches
US7204113B1 (en) * 2006-09-29 2007-04-17 Gm Global Technology Operations, Inc. Punch for hydroforming die
US7293442B1 (en) * 2007-03-26 2007-11-13 Gm Global Technology Operations, Inc. Method for hydroforming a ring-shaped tubular structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090038428A1 (en) * 2005-02-15 2009-02-12 Nsk Ltd. Metal Member With Through Hole And Manufacturing Method Therefor
US8459077B2 (en) * 2005-02-15 2013-06-11 Nsk Ltd. Manufacturing method for metal member with through hole

Also Published As

Publication number Publication date
DE10358500A1 (de) 2005-08-11
WO2005056212A1 (de) 2005-06-23
CA2549547A1 (en) 2005-06-23
DE10358500B4 (de) 2007-09-20

Similar Documents

Publication Publication Date Title
GB2279602A (en) Hollow body cut out
GB2319487A (en) Hydroforming apparatus having in-die piercing capabilities and slug ejection using hydroforming fluid
US6681611B2 (en) Process and device for manufacturing holes on the circumference of hollow sections
US5941112A (en) Method and apparatus for hydrotrimming and hydroshearing
EP1274523B1 (de) Hochdruckumformspülanlage
JP2008119703A (ja) 抜き加工装置及びその抜き加工方法
JP2004511352A (ja) 内部に物品が挿入されているようにしてチューブを形成するための方法および装置
JP2005103624A (ja) プレス金型用のパンチ、プレス金型用のパンチのストリッパープレートにおけるガイド構造及び面取り方法
US20070271979A1 (en) Punch For Producing Holes In The Wall Of Hollow Parts Subjected To The Action Of Internal High Pressure
US7284403B2 (en) Apparatus and method for performing a hydroforming process
JP2005297060A (ja) ハイドロフォームを用いた穿孔方法と穿孔用金型及びハイドロフォーム加工部品
US4048835A (en) Method of punching a small hole in a precision mechanics workpiece
US7739780B2 (en) Method of manufacturing using a die to produce a machined part
JP2007000887A (ja) 鍛造方法及び鍛造用複動金型装置
KR101382349B1 (ko) 프레스용 스크랩 취출장치
GB1592135A (en) Method of introducing gas into a container
JP5477947B2 (ja) ピアスポンチ
CN107649828A (zh) 在多个坯料中加工开口的方法
JP2701792B2 (ja) ばりなし穴抜き加工方法
JP3725877B2 (ja) セルフピアシングリベット用かしめ機及びこのかしめ機で用いられる改良されたポンチ
JP2000094198A (ja) 冷間鍛造用金型
KR101314353B1 (ko) 하이드로 피어싱을 위한 다부품 펀치
JP4924539B2 (ja) プレス加工装置、およびプレス加工方法
JP7115273B2 (ja) 中空部品の製造方法および製造装置
JPH0810869A (ja) 中空丸パイプの長孔明け加工装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: DAIMLERCHRYSLER AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KUSCHEL, STEPHAN;SCHMUCK, FRANK;SCHULT, JENS;REEL/FRAME:019543/0869;SIGNING DATES FROM 20070529 TO 20070614

AS Assignment

Owner name: DAIMLER AG, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:DAIMLERCHRYSLER AG;REEL/FRAME:020976/0889

Effective date: 20071019

Owner name: DAIMLER AG,GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:DAIMLERCHRYSLER AG;REEL/FRAME:020976/0889

Effective date: 20071019

STCB Information on status: application discontinuation

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

AS Assignment

Owner name: DAIMLER AG, GERMANY

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NO. 10/567,810 PREVIOUSLY RECORDED ON REEL 020976 FRAME 0889. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME;ASSIGNOR:DAIMLERCHRYSLER AG;REEL/FRAME:053583/0493

Effective date: 20071019