EP0972585A2 - Machine de formage rotative avec caractéristiques de formage améliorées - Google Patents

Machine de formage rotative avec caractéristiques de formage améliorées Download PDF

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Publication number
EP0972585A2
EP0972585A2 EP99113300A EP99113300A EP0972585A2 EP 0972585 A2 EP0972585 A2 EP 0972585A2 EP 99113300 A EP99113300 A EP 99113300A EP 99113300 A EP99113300 A EP 99113300A EP 0972585 A2 EP0972585 A2 EP 0972585A2
Authority
EP
European Patent Office
Prior art keywords
workpiece
roller
tool part
forming machine
machine according
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Withdrawn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
EP99113300A
Other languages
German (de)
English (en)
Other versions
EP0972585A3 (fr
Inventor
Michael Dipl.-Ing. Hoogen
Harmut Prof. Dr.-Ing. Hoffmann
Michael Dipl.-Ing. Schweitzer
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.)
L Schuler GmbH
Original Assignee
L Schuler 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 L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP0972585A2 publication Critical patent/EP0972585A2/fr
Publication of EP0972585A3 publication Critical patent/EP0972585A3/fr
Withdrawn legal-status Critical Current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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/36—Perforating, i.e. punching holes using rotatable work or tool 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/08—Stamping using rigid devices or tools with die parts on rotating carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/06—Perforating by punching, e.g. with relatively-reciprocating punch and bed with punching tools moving with the work
    • B26F1/08—Perforating by punching, e.g. with relatively-reciprocating punch and bed with punching tools moving with the work wherein the tools are carried by, and in operation move relative to, a rotative drum or similar support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/06—Perforating by punching, e.g. with relatively-reciprocating punch and bed with punching tools moving with the work
    • B26F1/10—Roller type punches

Definitions

  • the invention relates to a rotary forming machine, especially for forming flat workpieces.
  • rotary forming machines can serve where the workpiece is to be formed between two is carried out according to profiled rollers.
  • E.g. for punching holes, for making recesses, for cutting tabs and / or for bending individual workpiece parts serve on at least one roller provided projections that rotate with the roller.
  • Contrast with reciprocating driven tool halves enable cylindrical tool halves continuous work with less mechanical Pollution and with less noise.
  • E.g. is such a rotary forming machine from EP 0680793 A1 known.
  • the machine has two Rollers, one of which is recessed on its circumference is provided and forms a matrix.
  • the other roller is provided with strip-like projections on its circumference, complementary to the recesses of the aforementioned rollers are trained. It therefore forms a patrix.
  • U.S. Patent 5,040,397 addresses this problem.
  • two rollers which are trough-shaped extending parallel to their respective axis of rotation
  • Have recesses In the recesses there are movable, approximately semi-cylindrical tool parts, the one defined by the trough-shaped recess Axis are pivotable.
  • the semi-cylindrical tool parts are on their respective outward facing flat surfaces with a stamp or one matching the stamp Provide recess.
  • the tool parts are at the end each provided with a peg, which in a corresponding trained stationary cam track runs.
  • the tool part is brought in by means of the pin on the cam track one rotation of the roller so that the spatial Orientation of the stamp or the recess at least then does not change when the stamp is in with the tool Engagement is.
  • stamps do not appear as strips or ribs over the entire length Roll width formed continuously and should, for example Several rows of punches arranged side by side on a roller be against each other by less than a stamp width can be offset with the concept the US-PS 5040397 hardly realize.
  • the rotary forming machine has at least one roller on which tool parts are provided are, which are adjustable in the radial direction.
  • an actuator is provided the relevant tool part when the roller rotates in a radial movement within a predetermined angular range granted. This radial movement is superimposed on the rotational movement, communicated to the tool part by the roller becomes.
  • the workpiece for example a sheet metal strip, is with a speed performed under the roller, the corresponds approximately to the peripheral speed of the roller. Mapped to the movement of the sheet metal strip, the runs through Tool part a cycloid by the additional Movement of the tool part towards and from the workpiece this way is deformed.
  • the deformation can be so be chosen that the tool part shorter with the Workpiece is engaged as it has no additional movement component would be the case. This ensures that the swivel angle that the tool part, for example a punch or the like. Goes through with the workpiece is engaged, is reduced. This can cause flank friction a tool part, for example a punch be significantly reduced that occurs on the workpiece. Flank friction can also occur through recesses be reduced on the flanks. This is achieved, for example, by a punch at the end of its cutting edge is slimmed down so that it is radial from the outside Seen here after the cutting edge undercuts having.
  • the additional movement component with which the tool part to the workpiece in the specified angular range can be approximated and removed from it is one Relative motion component. This means that it is both is possible the tool part in relation to the workpiece, as well as the workpiece in relation to the tool part move. If necessary, both can also be moved. Furthermore, it is possible not just the tool part in terms of the roller and the workpiece, but the entire roller to move with respect to the workpiece, being the tool parts are then preferably fixed, i.e. stare at the roller are stored.
  • the movement component is preferably essentially directed at right angles to a feed movement, with the workpiece is transported.
  • the roller carries a large number of tool parts and is the total weight of the roller with tool parts not too big, but it can also be beneficial to move the entire roller in relation to the workpiece.
  • the actuator is in this case with the Roller connected so that the roller in addition to theirs Rotary movement executes a lifting movement with which it leads to the Workpiece is guided towards and away from the workpiece if the relevant tool parts in engagement with the workpiece are.
  • this presupposes that the individual Tool parts with regard to their angular range, in which they engage with the workpiece, do not overlap are arranged. With overlapping arrangement of the tool parts, it is rather advantageous to the tool parts to be stored and closed individually on the roller actuate.
  • a particularly easy way to do the tool parts moving in relation to the roller is with an in the roller arranged fixed cam or a any other means providing a movement curve given, with each tool part or simultaneously moving tool parts with a curve follower are provided and scan the curve.
  • the tool parts for example to hold radially inner position from which to carry it out a working stroke from the cam follower or be driven outside by another means.
  • the tool part with a not too strong Spring or other power generating agent are held in a radially outer position, whereby the tool part after placing on the workpiece of the Workpiece is first pressed radially inwards. Sits the tool part with its entire cutting edge or its other area of engagement on the workpiece on, can be supported by the spring means and if necessary by an actuator a radial outward force are generated, which then briefly reshaping the workpiece.
  • the pressure angle i.e. the Angular range of the roller in which the tool part with the Workpiece is engaged
  • This movement component is characterized in that the distance between the tool part and the workpiece additionally during the rotation of the tool part changed.
  • the tool it is possible to refer to the tool to move the roller or the tool part. This can both by moving a fixed workpiece support as also done by moving a second roller. The Workpiece is then passed between the two rollers, wherein the rollers have projections and depressions and thus form patrix and matrix locally.
  • Fig. 1 is a rotary forming machine 1 in a schematic Illustration illustrates.
  • the rotary forming machine 1 has a schematically indicated base frame 2 on, in which two rollers 3, 4 rotatably mounted are.
  • the rollers 3, 4 are arranged schematically by a Drive device 5 in indicated by arrows 6, 7 Direction of rotation in opposite directions at the same speed driven rotating.
  • a workpiece 9 is guided, that is, for example, a sheet of metal or a sheet metal strip.
  • the Workpiece 9 is thereby affected by the action of the rollers 3, 4 or by separate transport rollers 11, 12, 13, 14 in a transport direction indicated by an arrow 15 promoted.
  • the rollers 11, 12 and the rollers 13, 14 form one pair of rollers in front of and one behind the tool 8 is arranged.
  • the rollers 11, 12, 13, 14 are rotating driven and are in shape and / or with the workpiece non-positive intervention. You promote the workpiece 9 with a speed that is essentially at the peripheral speed the rollers 3, 4 coincide.
  • At the Roll 3 are arranged several tool parts 17, 18 are distributed along the circumference of the roller 3. In Fig. 1 only two tool parts are shown as examples.
  • the tool parts 17, 18 and others not illustrated tool parts can be arranged, Shape and size vary widely. You can both serve to introduce openings into the workpiece 9, i.e. closed or not closed cuts generate, as well as locally limited bending or drawing processes perform.
  • the roller 3 is schematic and with a illustrated single tool part 17.
  • the others Tool parts match the tool part 17 which is described below as representative of these.
  • the tool part 17 is a in the present example Punch in a linear guide 21, as by an arrow 22 indicated, with respect to the roller 3 radially is adjustable.
  • the punch 17 is over a power transmission member 23 with an actuator 24 connected, which is arranged in the roller 3.
  • the actuator 24 can be in permanent or temporary active connection with the punch 17. It is essential that the punch 17 in an angular range ⁇ passes through a movement curve 25 which is shown in FIG. 2 is indicated by dashed lines.
  • the punch 17 when it is the angular range ⁇ first enters in a radially inner position, being approximately in the middle of the angular range ⁇ occupies the radially outer position and the angular range leaves again in a radially inner position.
  • the radial position of the punch 17 of minor importance, i.e. he can as the motion curve 25 indicates, both radial inside and radially outside.
  • a technical implementation is schematic in Fig. 3 indicated.
  • the actuator 24 is from a fixed cam 31 formed approximately in the center the roller 3 is arranged.
  • the cam has one protruding section 32 on the workpiece 9 out points.
  • Cam follower 33 which is firmly connected to the punch 17 is.
  • the cam follower 33 is on by a compression spring 34 the cam 31 stretched out.
  • the compression spring 34 is there placed concentrically on a plunger 35 which the Cam follower 33 connects with the punch 17 and a Power transmission member forms.
  • the roller 4 is arranged below the workpiece 9, at a location assigned to the punch 17 has an opening 36. This widens radially cone-shaped inside to ensure uninterrupted removal of punching waste to enable.
  • the rollers 3, 4 run driven by the drive device 5 with essentially constant speed around.
  • the workpiece 9 is between the rollers with essentially the same Promoted speed.
  • Every revolution of the rollers 3, 4 one or more tool parts 17, 18 occur periodically interacting with the workpiece 9. Doing so the punch or the tool part 17 only then radially moved outward when it is in the immediate vicinity to the workpiece 9.
  • the movement curve is in Fig. 4 reproduced.
  • Movement of the workpiece 9 is the movement of the punch 17 a cycloid 41 in the Y direction perpendicular thereto. This is in Fig. 4 for a selected point Cutting edge of the punch 17 shown.
  • the cycloid is substantially more pointed than a cycloid 42, which would run through with a punch 17, which is fixed radially in a predetermined position.
  • the cycloid 41 is largely traversed with a radially inner stamp. If the punch 17 touches the workpiece, the cam follower 33 runs simultaneously onto the projection 32 of the cam 31 and drives the punch 17 radially outward. As a result, a short, almost linear section 43 is produced in the cycloid 41, in which the punch 17 undergoes a rapid lifting movement.
  • the surface area enclosed by the cycloid section 43 is almost zero, but in any case considerably less than a surface area 44 shown by hatching and enclosed by the undistorted cycloid 42 5, a sine curve 46 if the punch is not moved radially. However, if it is moved and actuated radially, it travels radially on the inside in a sine curve 47 with a smaller amplitude (smaller circle diameter), as illustrated in dashed lines in FIG. 5.
  • the punch 17 deviates from its sinus trajectory and has a short, downward movement tip. In this area, the punch comes into engagement with the workpiece 9 and, for example, punches out an opening.
  • a punching angle ⁇ s related to the angle of rotation of the roller 3 is here much smaller than a punching angle ⁇ so with a punch 17 that is not moved radially.
  • the punching angles ⁇ s are determined by a position Y0 at which the punch 17 begins to penetrate through the workpiece 9 .
  • FIG. 6 is an alternative embodiment of the Invention illustrated.
  • the punch 17 does not move away from the workpiece 9, but towards this.
  • the one Curve follower 52 instead of one Cam 31 provided a guide path 51, the one Curve follower 52 on both sides to a workpiece machining effecting central region 53 away from the workpiece 9 leads. This movement is via a tension member 54 on the Transfer punch 17.
  • the one for machining the workpiece 9 required force is from the spring means 34th upset.
  • the motion curve obtained according to Fig. 7. It has the basic form of a cycloid 56 on. Is near their reversal areas 57 it deforms. Is only a spring means 34 as an actuator provided and dispensed with curve 51 becomes the motion sequence drawn in a continuous line achieved.
  • the curve 51 with the curve follower 52 is as Actuating device provided, the punch 17 also accelerated out of the workpiece 9 what indicated by dashed lines with the curve section 58 in FIG. 7 is.
  • the roller 3 is a stationary pressure element 61 assigned a recess 62 for receiving of bent areas of the workpiece 9.
  • the Depressions 62 sit down from an intervention site starting in the direction of transport 15 to the downstream End of edition 61 continued.
  • the workpiece 9 is between the support 61 and the roller 3 performed, it being on the Edition 61 glides.
  • a rotary forming machine contains a tool 8 at least one roller 3 with a tool part 17, which rotates with the roller 3. To machine a workpiece 9, this is along the roller 3, preferably performed between two rollers 3, 4. In addition to the Rotational movement of the roller 3 becomes a relative movement between the tool part 17 and the workpiece 9, the in the machining direction, i.e. preferably across Workpiece 9 is directed. This allows the time in which the tool part 17 is in engagement with the workpiece 9 be shortened significantly, which minimizes wear and tear the machining result improved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP99113300A 1998-07-16 1999-07-09 Machine de formage rotative avec caractéristiques de formage améliorées Withdrawn EP0972585A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998131932 DE19831932A1 (de) 1998-07-16 1998-07-16 Rotationsumformmaschine mit verbessertem Umformverhalten
DE19831932 1998-07-16

Publications (2)

Publication Number Publication Date
EP0972585A2 true EP0972585A2 (fr) 2000-01-19
EP0972585A3 EP0972585A3 (fr) 2003-04-16

Family

ID=7874237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99113300A Withdrawn EP0972585A3 (fr) 1998-07-16 1999-07-09 Machine de formage rotative avec caractéristiques de formage améliorées

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EP (1) EP0972585A3 (fr)
DE (1) DE19831932A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101829718A (zh) * 2010-05-21 2010-09-15 深圳市金洲精工科技股份有限公司 一种波形钣金件滚压成形装置及滚压成形方法
EP2487014A1 (fr) * 2011-02-10 2012-08-15 Hunkeler AG Procédé et dispositif destinés à l'estampillage ou à la perforation de bandes de matériaux se déplaçant
CN114141109A (zh) * 2021-11-30 2022-03-04 桂林电子科技大学 一种高等数学教学用小型摆线演示教具

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5040397A (en) 1985-12-20 1991-08-20 Bodnar Ernest R Rotary apparatus and method
EP0680793A1 (fr) 1994-05-04 1995-11-08 Van Geel Systems B.V. Procédé et appareil pour fabriquer une forme de structure de construction avec une partie renforcée plane

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE526882A (fr) *
US2018366A (en) * 1934-01-22 1935-10-22 Klause Karl Punch
US2083370A (en) * 1936-06-26 1937-06-08 Gerald G Greulich Automatic rotary punch
GB920443A (en) * 1958-10-14 1963-03-06 Austen Robert Higgin Improvements relating to the punching of metal members such as sheets, joists or the like
US3657954A (en) * 1970-06-15 1972-04-25 Alco Machine & Tool Inc Die cutter assembly and mounting means for punch thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5040397A (en) 1985-12-20 1991-08-20 Bodnar Ernest R Rotary apparatus and method
EP0680793A1 (fr) 1994-05-04 1995-11-08 Van Geel Systems B.V. Procédé et appareil pour fabriquer une forme de structure de construction avec une partie renforcée plane

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101829718A (zh) * 2010-05-21 2010-09-15 深圳市金洲精工科技股份有限公司 一种波形钣金件滚压成形装置及滚压成形方法
EP2487014A1 (fr) * 2011-02-10 2012-08-15 Hunkeler AG Procédé et dispositif destinés à l'estampillage ou à la perforation de bandes de matériaux se déplaçant
CN114141109A (zh) * 2021-11-30 2022-03-04 桂林电子科技大学 一种高等数学教学用小型摆线演示教具
CN114141109B (zh) * 2021-11-30 2024-02-20 桂林电子科技大学 一种高等数学教学用小型摆线演示教具

Also Published As

Publication number Publication date
DE19831932A1 (de) 2000-01-20
EP0972585A3 (fr) 2003-04-16

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