EP1462190B1 - Method and apparatus for incremental forming - Google Patents
Method and apparatus for incremental forming Download PDFInfo
- Publication number
- EP1462190B1 EP1462190B1 EP03255335A EP03255335A EP1462190B1 EP 1462190 B1 EP1462190 B1 EP 1462190B1 EP 03255335 A EP03255335 A EP 03255335A EP 03255335 A EP03255335 A EP 03255335A EP 1462190 B1 EP1462190 B1 EP 1462190B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpiece
- form portion
- forming
- incremental forming
- incremental
- 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
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/18—Spinning using tools guided to produce the required profile
-
- 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
- B21D22/14—Spinning
-
- 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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/005—Incremental shaping or bending, e.g. stepwise moving a shaping tool along the surface of the workpiece
Definitions
- the present invention relates to an incremental forming method and an incremental forming apparatus.
- Patent document 1 Japanese Patent Laid-Open Publication No. 2002-1444 (European Patent Application Publication No. 1147832 A2) discloses an incremental forming method according to which a rod shaped tool is applied to the surface of a metal plate material and incremental forming is performed by shaping the plate member with the tool along a contour line corresponding to the shape of the product to be formed.
- JP 11-207413 shows another example of a prior art incremental forming apparatus and method.
- a workpiece is held on a workpiece holder by a workpiece clamp and incrementally formed using a rotary incremental forming tool.
- FIG. 1 is a perspective view showing the product manufactured through incremental forming that applies the present invention.
- the product comprises a primary form portion 10 having a two-dimensional curved cross-sectional shape, and a secondary form portion 20 having a three-dimensional shape and protruding from the center of the primary form portion 10.
- FIGS. 5 through 9 illustrate the conventional process for manufacturing the product 1 through conventional incremental forming.
- a forming jig 100 disposed on a table 50 includes a first mold member 110 corresponding to the primary form portion 10 of the product and a second mold member 120 corresponding to the secondary form portion 20 of the product.
- a metal plate 140 being the workpiece (base material) is a flat plate-shaped member, having its periphery supported by a workpiece holder 130 and a workpiece clamp 150.
- the workpiece holder 130 can be lowered from the peak area of the second mold member.
- An incremental forming tool 160 has an axis that is disposed along the perpendicular direction Z, and is capable of moving both in the horizontal direction X, Y and perpendicular direction Z.
- FIG. 6 is a schematic view of the conventional incremental forming
- FIG. 7 shows the forming path.
- the incremental forming tool 160 moves along the X-Y axis parallel to the upper surface of a plate-shaped workpiece 140, whilemoving in the Z axis direction corresponding to a pitch P at a time.
- the incremental forming tools 160 illustrated in each of the drawings in FIG. 8, actually there is only one incremental forming tool.
- Three tools 160 are illustrated in each drawing to show that the tool is moved along a contour line.
- FIG. 9(a) shows a state in which the incremental forming process is completed and a primary form portion 10 and a secondary form portion 20 are created on the workpiece 140.
- the workpiece 140 is subjected to an appropriate trimming process C 1 for trimming the peripheral area of the workpiece to correspond to the product, thereby forming the product 1.
- the workpiece 140 is left with an end material having a space 142 from which the product is cut out by the trimming, which causes deterioration of the yield factor of the material.
- the present invention aims at providing a method and apparatus for incremental forming that overcomes the above-mentioned problems of the prior art.
- the three-dimensional incremental forming method according to the present invention is as set forth in claim 1.
- the incremental forming apparatus according to the present invention is as set forth in claim 4.
- FIGS. 2 through 4 are explanatory views illustrating the method for creating a product by the incremental forming according to the present invention.
- a forming jig 200 positioned on a table 50 comprises only a mold member 220 corresponding to a secondary form portion of the product.
- a metal plate 240 being the workpiece (material) is formed in advance into a curved plate having a two-dimensional curved surface that corresponds to a primary formportion of the product.
- a workpiece holder 230 comprises a holder surface 232 that corresponds to the curved surface of the workpiece 240.
- a workpiece clamp 250 has a clamp surface 252 that corresponds to the curved surface of the workpiece 240.
- an incremental forming tool 260 and the table are relatively moved along the planar shape of the secondary form portion on an X-Y plane, and when the incremental forming tool 260 is relatively moved in the Y axis direction, the tool 260 is controlled so that it moves along the primary form portion, that is, along the curved surface of the workpiece 240.
- the incremental forming tool 260 is advanced by a predetermined pitch P 2 to create the secondary form portion, in a manner similar to the conventional incremental forming.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Making Paper Articles (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Paper (AREA)
Abstract
Description
- The present invention relates to an incremental forming method and an incremental forming apparatus.
- Patent document 1, Japanese Patent Laid-Open Publication No. 2002-1444 (European Patent Application Publication No. 1147832 A2) discloses an incremental forming method according to which a rod shaped tool is applied to the surface of a metal plate material and incremental forming is performed by shaping the plate member with the tool along a contour line corresponding to the shape of the product to be formed.
- JP 11-207413 shows another example of a prior art incremental forming apparatus and method. A workpiece is held on a workpiece holder by a workpiece clamp and incrementally formed using a rotary incremental forming tool.
- FIG. 1 is a perspective view showing the product manufactured through incremental forming that applies the present invention.
- The product, the whole structure of which being designated by reference number 1, comprises a
primary form portion 10 having a two-dimensional curved cross-sectional shape, and asecondary form portion 20 having a three-dimensional shape and protruding from the center of theprimary form portion 10. - FIGS. 5 through 9 illustrate the conventional process for manufacturing the product 1 through conventional incremental forming.
- A forming
jig 100 disposed on a table 50 includes afirst mold member 110 corresponding to theprimary form portion 10 of the product and asecond mold member 120 corresponding to thesecondary form portion 20 of the product. - A
metal plate 140 being the workpiece (base material) is a flat plate-shaped member, having its periphery supported by aworkpiece holder 130 and aworkpiece clamp 150. Theworkpiece holder 130 can be lowered from the peak area of the second mold member. An incremental formingtool 160 has an axis that is disposed along the perpendicular direction Z, and is capable of moving both in the horizontal direction X, Y and perpendicular direction Z. - FIG. 6 is a schematic view of the conventional incremental forming, and FIG. 7 shows the forming path.
- As illustrated in FIGS. 6 and 7, incremental forming is performed throughout the whole workpiece via a path P1 for forming the first form portion and a path P2 for forming the second form portion, thereby shaping the workpiece to create a product.
- As shown in FIG. 8, during incremental forming, the incremental forming
tool 160 moves along the X-Y axis parallel to the upper surface of a plate-shaped workpiece 140, whilemoving in the Z axis direction corresponding to a pitch P at a time. Though there are plural incremental formingtools 160 illustrated in each of the drawings in FIG. 8, actually there is only one incremental forming tool. Threetools 160 are illustrated in each drawing to show that the tool is moved along a contour line. - When the pitch P for moving the tool in the Z direction is constant, the forming of the workpiece is progressed along a contour line. If the radius of curvature of the curved plane of the first form portion is large, the distance between the adjacent paths is widened, deteriorating formability.
- However, if the pitch is narrowed to improve formability and to overcome the above problem, another drawback is caused in that the total length of the form path is increased and the total work time lengthened.
- FIG. 9(a) shows a state in which the incremental forming process is completed and a
primary form portion 10 and asecondary form portion 20 are created on theworkpiece 140. - Thereafter, the
workpiece 140 is subjected to an appropriate trimming process C1 for trimming the peripheral area of the workpiece to correspond to the product, thereby forming the product 1. - After the trimming process, the
workpiece 140 is left with an end material having aspace 142 from which the product is cut out by the trimming, which causes deterioration of the yield factor of the material. - Therefore, the present invention aims at providing a method and apparatus for incremental forming that overcomes the above-mentioned problems of the prior art.
- The three-dimensional incremental forming method according to the present invention is as set forth in claim 1.
- The incremental forming apparatus according to the present invention is as set forth in claim 4.
-
- FIG. 1 is a perspective view of the product formed according to the present invention;
- FIG. 2 is a perspective view of the device used in the present invention;
- FIG. 3 is an explanatory view illustrating the preferred embodiment of the present invention;
- FIG. 4 is an explanatory view illustrating the preferred embodiment of the present invention;
- FIG. 5 is a perspective view showing the device used according to the.prior art;
- FIG. 6 is an explanatory view showing the incremental forming according to the prior art;
- FIG. 7 is an explanatory view showing the incremental forming according to the prior art;
- FIG. 8 is an explanatory view showing the incremental forming according to the prior art; and
- FIG. 9 is an explanatory view showing the incremental forming according to the prior art.
- FIGS. 2 through 4 are explanatory views illustrating the method for creating a product by the incremental forming according to the present invention.
- According to the present invention, a forming
jig 200 positioned on a table 50 comprises only amold member 220 corresponding to a secondary form portion of the product. - A
metal plate 240 being the workpiece (material) is formed in advance into a curved plate having a two-dimensional curved surface that corresponds to a primary formportion of the product. - A
workpiece holder 230 comprises aholder surface 232 that corresponds to the curved surface of theworkpiece 240. Similarly, aworkpiece clamp 250 has aclamp surface 252 that corresponds to the curved surface of theworkpiece 240. - During the forming process, an incremental forming
tool 260 and the table are relatively moved along the planar shape of the secondary form portion on an X-Y plane, and when the incremental formingtool 260 is relatively moved in the Y axis direction, thetool 260 is controlled so that it moves along the primary form portion, that is, along the curved surface of theworkpiece 240. - Along with the advancement of the forming process, the incremental forming
tool 260 is advanced by a predetermined pitch P2 to create the secondary form portion, in a manner similar to the conventional incremental forming. - As shown in FIG. 4, since according to the present invention a two-dimensional curve is provided in advance to the
workpiece 240 and only the secondary form portion having a three-dimensional structure is processed by incremental forming, the form path can be shortened greatly and the work time cut down.
Claims (4)
- An incremental forming method for forming a product (1) comprising a primary form portion (10) having a cross-section with a two-dimensional curved plane and a secondary form portion (20) having a three-dimensional shape formed to a part of the primary form portion (10), the incremental forming method comprising:preparing a workpiece (240) having a curved plane corresponding to the primary form portion (10); andforming the secondary form portion (20) having the three-dimensional shape by incrementally forming said part of the workpiece using a forming jig (200) having a shape corresponding to the secondary form portion (20).
- The incremental forming method according to claim 1, wherein
during the incremental forming process for forming the secondary form portion (20); an incremental forming tool (260) is moved along a path parallel to the curved plane of the primary form portion (10). - The incremental forming method according to claim 2, comprising holding a periphery of the workpiece (240) with a workpiece holder (230) and a workpiece clamp (250) having curved surfaces corresponding to the curved plane of the workpiece (240).
- An incremental forming apparatus for forming a product (1) comprising a primary form portion (10) having a cross-section with a two-dimensional curved plane and a secondary form portion (20) having a three-dimensional shape formed to a part of the primary form portion (10); the apparatus comprising:a table mounting a workpiece holder (230) and a workpiece clamp (250) for holding a periphery of a workpiece (240); andan incremental forming tool (260) having an axis disposed substantially perpendicular to the table;the apparatus further comprises a forming jig (200) having a shape corresponding to the secondary form portion (20) andthe workpiece holder (230) and the workpiece clamp (240) have curved surfaces corresponding to a curved surface of the workpiece (240).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003089942A JP4322033B2 (en) | 2003-03-28 | 2003-03-28 | Sequential forming method and apparatus |
JP2003089942 | 2003-03-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1462190A1 EP1462190A1 (en) | 2004-09-29 |
EP1462190B1 true EP1462190B1 (en) | 2006-03-29 |
Family
ID=32821576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03255335A Expired - Lifetime EP1462190B1 (en) | 2003-03-28 | 2003-08-28 | Method and apparatus for incremental forming |
Country Status (9)
Country | Link |
---|---|
US (1) | US20040187548A1 (en) |
EP (1) | EP1462190B1 (en) |
JP (1) | JP4322033B2 (en) |
KR (1) | KR100545293B1 (en) |
CN (1) | CN1282509C (en) |
AT (1) | ATE321617T1 (en) |
AU (1) | AU2003244039A1 (en) |
DE (1) | DE60304298T2 (en) |
TW (1) | TWI288671B (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7984635B2 (en) | 2005-04-22 | 2011-07-26 | K.U. Leuven Research & Development | Asymmetric incremental sheet forming system |
US8322176B2 (en) * | 2009-02-11 | 2012-12-04 | Ford Global Technologies, Llc | System and method for incrementally forming a workpiece |
US8733143B2 (en) | 2010-07-15 | 2014-05-27 | Ford Global Technologies, Llc | Method of incremental forming with successive wrap surfaces |
US8783078B2 (en) | 2010-07-27 | 2014-07-22 | Ford Global Technologies, Llc | Method to improve geometrical accuracy of an incrementally formed workpiece |
US8302442B2 (en) | 2010-07-29 | 2012-11-06 | Ford Global Technologies, Llc | Method of incrementally forming a workpiece |
JP6072433B2 (en) * | 2012-05-23 | 2017-02-01 | 株式会社アミノ | Sequential molding method and apparatus |
JP2013252557A (en) * | 2012-06-08 | 2013-12-19 | Amino:Kk | Sequential forming method |
US9038999B2 (en) * | 2012-08-10 | 2015-05-26 | Ford Global Technologies, Llc | Fixture assembly for forming prototype parts on an incremental forming machine |
US9635714B2 (en) | 2013-05-06 | 2017-04-25 | The Boeing Company | Incremental sheet forming for fabrication of cold sprayed smart susceptor |
DE102014014202A1 (en) * | 2014-09-22 | 2016-03-24 | Technische Universität Dortmund | Method and device for the combined production of components by means of incremental sheet metal forming and additive processes in one setting |
US10144048B2 (en) | 2014-11-19 | 2018-12-04 | Ford Global Technologies, Llc | High stiffness and high access forming tool for incremental sheet forming |
US10478897B2 (en) * | 2017-01-04 | 2019-11-19 | GM Global Technology Operations LLC | Sheet metal system and manufacturing process joining incremental forming and direct metal deposition |
US10976716B2 (en) * | 2018-03-16 | 2021-04-13 | The Boeing Company | Generating a plurality of curved transitions connecting planar parallel alternating paths for forming a workpiece |
CN112517746B (en) * | 2019-09-17 | 2022-07-12 | 东南大学 | Adaptive control incremental forming method |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2378413A (en) * | 1942-09-24 | 1945-06-19 | Cairns Corp | Device for shaping metal sheets |
US2434379A (en) * | 1944-12-16 | 1948-01-13 | Glenn L Martin Co | Apparatus and method of stretch pressing metal sheets |
US3021887A (en) * | 1956-07-19 | 1962-02-20 | Rohr Aircraft Corp | Titanium stretch forming |
US3478553A (en) * | 1962-02-14 | 1969-11-18 | Budd Co | Method of forming sandwich panels |
US5035133A (en) * | 1990-02-09 | 1991-07-30 | Rohr Industries, Inc. | Method and apparatus for hot die draw forming metal sheets |
DE4137453C1 (en) * | 1991-11-14 | 1992-05-27 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
DE69806971T2 (en) * | 1997-09-18 | 2003-08-07 | Cosma Int Inc | DRAWING AND DRAWING TOOL AND RELATED PROCEDURE |
JPH11207413A (en) * | 1998-01-21 | 1999-08-03 | Toyota Central Res & Dev Lab Inc | Incremental forming method |
WO1999038627A1 (en) * | 1998-01-29 | 1999-08-05 | Amino Corporation | Apparatus for dieless forming plate materials |
JP3753608B2 (en) * | 2000-04-17 | 2006-03-08 | 株式会社日立製作所 | Sequential molding method and apparatus |
US6532786B1 (en) * | 2000-04-19 | 2003-03-18 | D-J Engineering, Inc. | Numerically controlled forming method |
JP2002102945A (en) * | 2000-09-25 | 2002-04-09 | Honda Motor Co Ltd | Incremental stretch forming tool |
DE10303458A1 (en) * | 2003-01-29 | 2004-08-19 | Amino Corp., Fujinomiya | Shaping method for thin metal sheet, involves finishing rough forming body to product shape using tool that moves three-dimensionally with mold punch as mold surface sandwiching sheet thickness while mold punch is kept under pushed state |
JP4209233B2 (en) * | 2003-03-28 | 2009-01-14 | 株式会社日立製作所 | Sequential molding machine |
-
2003
- 2003-03-28 JP JP2003089942A patent/JP4322033B2/en not_active Expired - Lifetime
- 2003-08-19 TW TW092122780A patent/TWI288671B/en not_active IP Right Cessation
- 2003-08-28 AT AT03255335T patent/ATE321617T1/en not_active IP Right Cessation
- 2003-08-28 DE DE60304298T patent/DE60304298T2/en not_active Expired - Lifetime
- 2003-08-28 EP EP03255335A patent/EP1462190B1/en not_active Expired - Lifetime
- 2003-08-29 KR KR1020030060143A patent/KR100545293B1/en active IP Right Grant
- 2003-08-29 US US10/650,808 patent/US20040187548A1/en not_active Abandoned
- 2003-09-01 CN CNB031557422A patent/CN1282509C/en not_active Expired - Lifetime
- 2003-09-01 AU AU2003244039A patent/AU2003244039A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP1462190A1 (en) | 2004-09-29 |
US20040187548A1 (en) | 2004-09-30 |
CN1282509C (en) | 2006-11-01 |
JP4322033B2 (en) | 2009-08-26 |
AU2003244039A1 (en) | 2004-10-14 |
TWI288671B (en) | 2007-10-21 |
ATE321617T1 (en) | 2006-04-15 |
KR100545293B1 (en) | 2006-01-24 |
JP2004291065A (en) | 2004-10-21 |
DE60304298D1 (en) | 2006-05-18 |
TW200418591A (en) | 2004-10-01 |
CN1533853A (en) | 2004-10-06 |
DE60304298T2 (en) | 2006-11-16 |
KR20040086090A (en) | 2004-10-08 |
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