EP0995510B1 - Tool and use of the tool for the rolling treatment of a workpiece - Google Patents

Tool and use of the tool for the rolling treatment of a workpiece Download PDF

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Publication number
EP0995510B1
EP0995510B1 EP99120768A EP99120768A EP0995510B1 EP 0995510 B1 EP0995510 B1 EP 0995510B1 EP 99120768 A EP99120768 A EP 99120768A EP 99120768 A EP99120768 A EP 99120768A EP 0995510 B1 EP0995510 B1 EP 0995510B1
Authority
EP
European Patent Office
Prior art keywords
workpiece
tool
roller ball
roller
deforming
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
EP99120768A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0995510A1 (en
Inventor
Albrecht Schneider
Peter Lassnig
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.)
Mate Precision Technologies Inc
Original Assignee
Mate Precision Tooling Inc
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
Priority claimed from DE1998148144 external-priority patent/DE19848144A1/de
Priority claimed from DE1998148153 external-priority patent/DE19848153A1/de
Priority claimed from US09/258,317 external-priority patent/US6131430A/en
Application filed by Mate Precision Tooling Inc filed Critical Mate Precision Tooling Inc
Publication of EP0995510A1 publication Critical patent/EP0995510A1/en
Application granted granted Critical
Publication of EP0995510B1 publication Critical patent/EP0995510B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling

Definitions

  • the invention relates to the use of a tool in a punch press and to a tool for deforming a workpiece by moving the panel relative to rolling elements which engage, deform and roll along the workpiece.
  • Nibbling is performed by a tool having a semi-spherical part and a recessed part between which the workpiece is positioned as shown in Japanese Patent No. 2247021.
  • the tool performs a series of rapid short vertical strokes to form indentations, ultimately creating a groove in the workpiece.
  • Tools of this type suffer from the drawback that the series of connected indentations which are formed are not nearly as smooth as a continuous groove formed by rollers.
  • Another known way to form a continuous shape is by using a tool having upper and lower parts with mating cylindrical rollers rotatable about parallel horizontal axes.
  • Such tools are known, for example, from U.S. Patent No. 5,555,759, which discloses a tool having upper and lower cylindrical rollers, rotatable about axes which are parallel to the workpiece to be treated, the workpiece being positioned between the rollers.
  • a major drawback of this structure is that the workpiece can only be turned about a relatively wide arc since the rollers move linearly, thereby reducing the ability to make turns about a narrow arc. In other words, if the workpiece is turned about a narrow arc or point, the rollers will slide laterally, causing damage to the workpiece.
  • an object of the present invention to provide for a deforming of a workpiece by a tool having a simpler construction and greater range of motion than the prior art devices. It is another object to provide a new and improved tool for deforming a flat workpiece.
  • the present invention relates to the use of a deforming tool in accordance with claim 1, said tool having cooperating upper and lower parts mounted or adapted to be mounted in the upper and lower turrets or tool holders of a punch press.
  • the upper part is urged downwardly against the lower part, shaping a flat workpiece located therebetween.
  • One of the upper and lower parts carries a roller ball mounted for universal rolling movement, while the other part carries elements which mate with the roller ball such that the roller ball and the mating elements form a groove in a workpiece which is moved along while engaged by the roller ball and mating elements.
  • two roller balls are positioned in either the upper or lower parts.
  • a single roller ball is seated in the other of the upper and lower parts and is offset so as to be aligned between the two roller balls, creating a wave-shaped gap therebetween.
  • each individual roller ball is retained in a cylindrical holder having a hemispherical bearing shell therein allowing for universal rolling movement of the roller ball.
  • a holding ring which has an interior diameter that is smaller than the largest diameter of the roller ball, retains the roller ball in the holder.
  • the roller ball is mounted in the lower part and the mating element, preferably the two roller balls, are mounted in the upper part.
  • the mating element may be a fixed, wave-shaped element instead of two roller balls.
  • the mating element, whether a pair of roller balls or fixed elements, can comprise different sizes and/or shapes from each other in order to form a groove which is asymmetrical across its width.
  • the tool of the invention is defined in claim 8 and may further allow for length adjustment of the upper part to provide more precise placement of the tool into its operating position or for purposes of treating workpieces having different thicknesses without the need to adjust the entire system.
  • Figure 1 shows a tool 1 for deforming a workpiece, such as a sheet metal panel or other malleable panel.
  • Tool 1 includes an upper part 50 having a body 2 guided in a guide 3 and also includes a lower part, namely a die 51.
  • a workpiece 17 is positioned between the upper and lower parts 50,51 for deformation.
  • upper part 50 is received in a turret 21 of a punch press (not shown).
  • a driver 4 is attached to body 2 at an upper end thereof, preferably by a threaded engagement 5.
  • the threaded engagement 5 allows for adjustment of the length of the upper part 50 as discussed in greater detail below.
  • body 2 and driver 4 may be constructed as a single piece.
  • a head 6 is attached to driver 4.
  • upper part 50 is supported in a turret bore 15 on springs 16.
  • driver 4 is pressed downward, moving body 2 and roller ball assembly 7, mounted in the lower end of body 2, into engagement with the top of workpiece 17.
  • Lower part 51 includes a roller ball 11' mounted therein and is, in turn, mounted in a lower turret 18.
  • Figure 2A shows a side view of the roller ball assembly 7.
  • the cylindrical upper end 8 of roller ball assembly 7 is adapted to be received in a bore 9 in the lower end of body 2.
  • Roller ball assembly 7 may be held in place in the body 2 via screws 10.
  • FIG 2B shows a bottom view of roller ball assembly 7 into which two rotatable roller balls 11 have been inserted.
  • Roller balls 11 are spherical and are held in place in cylindrical holders 12.
  • Holders 12, in turn, are retained in roller ball assembly 7 via set screws 13.
  • Holders 12 are easily released from roller ball assembly 7 by loosening set screws 13.
  • Each of the roller balls 11,11' is mounted in a hemispherical bearing shell inside holder 12 for free universal rolling movement.
  • Each roller ball 11,11' is held in place in holder 12 by means of a holding ring 20 which has a smaller inside diameter than the diameter of the roller balls 11,11'.
  • Each entire unit, i.e., a holder 12, a roller ball 11 or 11' and a holding ring 20, is typically formed as part of the tool 1 or provided separately as a replacement part which is a conventional part available through McMaster-Carr, Chicago, Illinois. It is easily replaced in either the upper part 50 or lower part 51.
  • Figures 1 and 3 a single roller ball 11' is provided in lower part 51. This configuration forms a wave-shaped gap between the roller balls 11 and 11'.
  • Figure 3 shows how the roller balls 11,11' engage the workpiece 17 when a ram acts on head 6 to move the roller ball assembly 7 into contact with the workpiece 17.
  • the method of operation of the tool of the invention is as follows:
  • Workpiece 17 is positioned between upper part 50 and lower part 51.
  • the ram of the punch press (not shown) then presses down on head 6 until both roller balls 11 and 11' are in contact with the workpiece 17.
  • the ram continues to maintain the tool 1 in contact with the workpiece 17 throughout the deforming operation.
  • the workpiece is then translated between the roller balls 11, 11' to create a smooth elongated deformation in the workpiece. In order to create a corner or curve shaped deformation, the workpiece is simply rotated in the desired direction.
  • roller balls 11 and/or 11' are mounted for free universal rolling movement, i.e., over a 360 degree range in any direction, it is possible to make sharp turns in the workpiece and avoid the damage to the workpiece which occurs with cylindrical-shaped rollers that are not capable of such universal rolling movement.
  • upper part 50, or lower part 51 may be provided with one or more static members 53 conforming to the shape of the roller balls 11, or 11', respectively and in which the roller balls 11, 11' are guided to deform the workpiece 17.
  • roller balls of differing diameters may be utilized.
  • roller ball 54 is smaller than roller ball 55 which increases the ease of forming structures such as a flange.
  • roller ball 11 in the upper part 50 and two roller balls 11' in the lower part 51, as shown, for example, in Figure 5, discussed in greater detail below.
  • additional roller balls as well as roller balls in different axial positions, may be utilized.
  • driver 4 and body 2 may be constructed as a single piece, in the preferred embodiment, driver 4 and body 2 are constructed as two pieces connected by the threaded connection 5. By rotating driver 4 with respect to body 2, it is possible to perform minute changes in the length of the upper part 50. During a deforming operation, rotation of the driver 4 with respect to the body 2, as well as rotation of the body 2 with respect to the guide 3 or turret 21 is prevented by any number of known means, such as a pin in one member which fits in a slot of the other member.
  • tool 1 is seated in turret bore 15 and rests on springs 16.
  • lower part 51 may be seated in lower turret 18 on springs (not shown).
  • the springs 16, or corresponding springs in the lower part 51 provide some resiliency to account for minor variations in the plane of the workpiece and to provide some tolerance for errors in adjustment of the length of the tool.
  • the roller balls of the invention may be used in any number of different tool configurations. As shown in Figure 5, roller balls 11,11' are used in conjunction with a tool of the type having a compression spring 22 positioned between the head 23 at the rear end of a driver 24 and a flange 25 at the upper end of the body 26.
  • Upper part 50' of tool 27 is shown mounted in a turret 28 of a punch press (not shown) and seated on springs 29. It is also within the scope of the invention to utilize a tool which is not seated on springs 29 or which does not include a compression spring 22. Moreover, it is possible to use the roller balls of the invention in a tool of the type used in punch presses without a turret.
  • Figure 6 shows an embodiment of the invention in which tool 30 is positioned in a turret bore 31 without the use of springs.
  • Tool 30 is axially movable by a spindle-type drive 32 rather than a ram.
  • Drive 32 includes a motor 33, which may be electric, pneumatic or hydraulic, that works in conjunction with a threaded spindle 34, a pusher element 35 and a pressure element 36.
  • the pusher element 35 has an inclined surface 37 which cooperates with a further inclined surface 38 at the top of pressure element 36.
  • a large transmission ratio results in accordance with the pitch of the threaded spindle 34 and inclination of the inclined surfaces 37,38 such that large advancement forces are achieved with a comparatively small motor 33.
  • minute adjustments in the distance between the roller and workpiece is possible.
  • Inclination of the inclined surfaces 37,38 causes self-locking of the drive 32 at a desired operating position, which relieves the threaded spindle 34 and the motor 33 of holding forces after the tool 30 has reached the desired operating position.
  • An interlocking guide between the pressure element 36 and the pusher element 35 is provided, for example, in the form of an undercut groove (not shown), which extends parallel with the inclined surfaces 37,38 and which permits a retraction of the tool 30 from the working position by means of reversing the direction of rotation of the motor 33.
  • a rigid connection is also provided between the pressure element 36 and the tool head 39. Other forms of interlocking connections may also be utilized.
  • the interlocking connection between the pusher element 35 and the tool head 39 may be released if, for example, different tools are received in the turret 40 and the drive 32 is intended to advance these tools as soon as they are in their working position by appropriate displacement of the tool holder 40.
  • an undercut groove open at the sides, may be located between the pressure element 36 and the tool head 39 to permit lateral engagement and disengagement of an appropriately designed projection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
EP99120768A 1998-10-20 1999-10-20 Tool and use of the tool for the rolling treatment of a workpiece Expired - Lifetime EP0995510B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE19848144 1998-10-20
DE1998148144 DE19848144A1 (de) 1998-10-20 1998-10-20 Werkzeug zur rollenden Bearbeitung eines Werkstückes
DE19848153 1998-10-20
DE1998148153 DE19848153A1 (de) 1998-10-20 1998-10-20 Zustellantrieb für Rollwerkzeuge
US09/258,317 US6131430A (en) 1998-10-20 1999-02-26 Tool and method for the rolling treatment of a workpiece
US258317 1999-02-26

Publications (2)

Publication Number Publication Date
EP0995510A1 EP0995510A1 (en) 2000-04-26
EP0995510B1 true EP0995510B1 (en) 2006-12-13

Family

ID=27218751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99120768A Expired - Lifetime EP0995510B1 (en) 1998-10-20 1999-10-20 Tool and use of the tool for the rolling treatment of a workpiece

Country Status (7)

Country Link
EP (1) EP0995510B1 (ja)
JP (1) JP4406898B2 (ja)
AT (1) ATE347943T1 (ja)
AU (1) AU1447800A (ja)
CA (1) CA2314987C (ja)
DE (1) DE69934374T2 (ja)
WO (1) WO2000023210A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004020483A1 (de) 2004-04-26 2005-11-17 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Werkzeug, Maschine sowie Verfahren zum Entgraten von Schnittkanten an Werkstücken
DE102005003558A1 (de) * 2005-01-26 2006-07-27 Pass Stanztechnik Ag Rollenwerkzeug zur linienhaften Blechverformung sowie Blechverformungsvorrichtung mit einem derartigen Rollenwerkzeug
DE102006049045A1 (de) 2006-10-18 2008-04-24 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Werkzeug zum Bearbeiten von plattenartigen Werkstücken
CN102000727A (zh) * 2009-08-31 2011-04-06 扬州恒德模具有限公司 一种在薄板板面上加工圆形筋槽的方法
CN102000722A (zh) * 2009-08-31 2011-04-06 扬州恒德模具有限公司 一种数控转塔冲床旋转工位用滚筋上模
CN102000728A (zh) * 2009-08-31 2011-04-06 扬州恒德模具有限公司 一种滚筋头
JP6688661B2 (ja) * 2016-04-01 2020-04-28 日鉄建材株式会社 金属板の加工装置及び加工方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1240791A (en) * 1917-04-06 1917-09-18 John Czajka Machine for forming sheet material.
US2760260A (en) * 1952-12-17 1956-08-28 Frederick C Melchior Method of rolling capsules

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US629245A (en) * 1898-07-21 1899-07-18 Salomon Frank Apparatus for producing ribbed or corrugated tubes.
US2491317A (en) * 1947-01-21 1949-12-13 Klocke William Mechanical press convertible in respect to compression or tension drive and length of stroke
JPS606223A (ja) * 1983-06-24 1985-01-12 Toyota Motor Corp プレス型における縦ビ−ド成形装置
US5555759A (en) * 1994-01-12 1996-09-17 Wilson Tool International, Inc. Workpiece-deforming tool and die for use in a punch press
US5655396A (en) * 1995-09-25 1997-08-12 General Motors Corporation Roll peening device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1240791A (en) * 1917-04-06 1917-09-18 John Czajka Machine for forming sheet material.
US2760260A (en) * 1952-12-17 1956-08-28 Frederick C Melchior Method of rolling capsules

Also Published As

Publication number Publication date
JP4406898B2 (ja) 2010-02-03
JP2003527965A (ja) 2003-09-24
DE69934374D1 (de) 2007-01-25
WO2000023210A1 (en) 2000-04-27
ATE347943T1 (de) 2007-01-15
CA2314987C (en) 2008-06-03
DE69934374T2 (de) 2007-10-11
AU1447800A (en) 2000-05-08
CA2314987A1 (en) 2000-04-27
EP0995510A1 (en) 2000-04-26

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