WO2005046902A1 - Werkzeug und innenhochdruck-umformen eines hohlprofils - Google Patents
Werkzeug und innenhochdruck-umformen eines hohlprofils Download PDFInfo
- Publication number
- WO2005046902A1 WO2005046902A1 PCT/EP2004/011239 EP2004011239W WO2005046902A1 WO 2005046902 A1 WO2005046902 A1 WO 2005046902A1 EP 2004011239 W EP2004011239 W EP 2004011239W WO 2005046902 A1 WO2005046902 A1 WO 2005046902A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hollow profile
- tool
- cutting
- embossing
- cutting device
- Prior art date
Links
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
- 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
- B21D26/047—Mould construction
-
- 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
Definitions
- the invention relates to a tool for forming a hollow profile according to the hydroforming process according to the preamble of claim 1 and an associated method according to the preamble of claim 11.
- the present invention deals with the problem of specifying a method for hydroforming, with which in particular a rationalized manufacturing process can be achieved. Furthermore, a tool is to be created that is suitable for the above-mentioned method, with which various method steps in particular can be combined.
- the invention is based on the general idea of forming a tool for reshaping the hollow profile according to the internal high-pressure shaping method also for embossing an embossing on the outside of the hollow profile and in addition for punching the hollow profile.
- the tool has at least one embossing die which is adjustable transversely to the longitudinal extent of the hollow profile and at least one punch arranged coaxially in the embossing stamp.
- the solution according to the invention thus offers the advantage that three process steps, namely hydroforming, stamping and punching, can be carried out in a single tool, so that in particular no tool change is required, which results in a rationalized production process.
- the solution according to the invention thus contributes to streamlining the manufacturing process and thereby to achieving time and cost advantages.
- the solution according to the invention ensures that the holes produced by the punch have a high degree of position and shape accuracy relative to the embossing, and the quality of the hollow profiles produced can thereby be significantly increased. In comparison to previous manufacturing processes, in which the embossments and / or the holes were subsequently introduced into the already shaped hollow profiles, subsequent deformation and thus dimensional inaccuracy of the hollow profile can now be avoided.
- the solution according to the invention offers the great advantage that the embossing stamp does not adversely affect the dimensional accuracy, that is to say the position and the shape of the holes produced, by the embossing.
- the tool according to the invention can first be punched and then embossed after hydroforming, or vice versa.
- the tool can also be designed for cutting a flange on the hollow profile, as a result of which a further method step can be integrated without changing the tool.
- the stamping die can be arranged in such a way that it holds a cutting device of the tool which extends parallel to the longitudinal extent of the hollow profile and which is adjustable in the transverse direction of the hollow profile crosses and penetrates the embossing process in a corresponding opening.
- a side of the cutting device facing the hollow profile is designed as a shaping die wall against which the hollow profile rests during hydroforming, this results in simplified kinematics for the tool, which can be used, for example, for higher cycle times.
- the tool has a lower die and an upper die, which are adjustable relative to one another.
- the embossing stamp can expediently be adjustably mounted on or in one of these dies.
- there is a defined relative position between the stamping die and the respective die which improves the accuracy of the manufacturing process.
- the cutting device can either be integrated into one of the dies, the cutting edge then forming an integral part of the respective die, or the cutting edge is designed as a separate component and fixed in position on one of the dies, or the cutting device is arranged on one of the dies in a stroke-adjustable manner ,
- the illustrated variants of the arrangement of the cutting device on the tool already indicate the wide possibilities that the invention opens up with regard to process-optimized arrangement variants of the cutting devices.
- An embodiment of the cutting device as a separate component, which is fixed in position on one of the matrices, offers the advantage, for example, that after a larger number of cutting processes, the cutting device or the cutting edge can be replaced simply and quickly, thereby reducing the maintenance effort Tool can be lowered.
- the lower weight of the cutting device that has to be moved results in a significantly quieter operation of the tool compared to the upper or lower die.
- the integration of the cutting device into one of the dies or the formation of the In contrast, the cutting edge as an integral part offers the advantage that it enables a particularly precise and powerful cutting process to be achieved.
- the solution according to the invention thus offers the possibility of reacting flexibly to the most varied of requirements with regard to the material and / or workpiece to be processed.
- At least one hold-down device is provided in the area of the cutting edge, which fixes the flange of the hollow profile at least during the cutting process.
- a hold-down device in conjunction with a positioning device, which presses the hollow profile before and during the cutting and forming process against the side of the cutting device facing the hollow profile, ensures that the hollow profile is held in position during the cutting process, thereby ensuring precise and high-quality cutting.
- the hold-down device also ensures that the hollow profile is always positioned the same way within the tool, as a result of which a high, reproducible dimensional accuracy and thus uniformity of the hollow profiles to be produced is achieved.
- FIG. 1 shows a cross section through a tool according to the invention with an inserted hollow profile before the cutting or forming process
- FIG. 2 shows a representation as in FIG. 1, but with the positioning device actuated
- FIG. 3 shows a cross section through the tool according to the invention after the cutting and forming process and before the embossing or punching process
- FIG. 4 shows a representation as in FIG. 3, but with the embossing and punching process completed
- Fig. 5 shows a cross section through the tool with the upper and lower dies open.
- a tool 1 according to the invention which is designed for cutting a flange 3 on a hollow profile 2, has a bottom die 7 and an upper die 8, which are adjustable relative to one another.
- the upper die 8 can be adjusted to the lower die 7 here.
- the lower die 7 can be adjusted to the upper die 8 or that both are adjustably mounted.
- the tool 1 has at least one cutting device 4 running parallel to the longitudinal extension and having a cutting edge 5 which is transverse to the hollow profile 2 relative to the hollow profile is adjustable.
- the sclineid device 4 can be integrated into one of the matrices 7 or 8, the cutting edge
- the cutting device 4 can also be designed as a separate component which is fixed in position on one of the two dies 7 or 8, here the top die 8.
- the cutting device 4 can be arranged on one of the matrices 7 or 8 in such a way that it can be adjusted in terms of stroke relative to the respective die 7, 8.
- a particularly powerful and thereby precise cutting or cutting through of the flange 3 can be achieved, as a result of which the quality of a later end product can be significantly increased.
- the design of the cutting device 4 as a separate component, which is fixed in position on one of the matrices 7 or 8, offers the great advantage that the exchange of the cutting edge 4, which can be designed, for example, as a cutting knife, is simple and inexpensive. For example, hardened metals which have a particularly long service life can be considered as cutting edge 5.
- the cutting device 4 together with the cutting edge 5 is arranged to be adjustable on one of the dies 7 or 8
- the advantage is that the cutting operation is carried out by a closing operation of the tool 1, i.e. moving the upper die 8 towards one another Sub-die 7, can be decoupled.
- the tool 1 is designed, for example, in such a way that the upper die 8 and the lower die 7 each have an L-shaped shape, which has a cavity when it is moved together 14 form in which the hollow profile 2 can be formed with internal high pressure.
- This cavity 14 is bounded on at least one side by the die wall 17 of the cutting device 4.
- a positioning device 9 is provided on the tool 1, which presses the hollow profile 2 against the side 6 of the cutting device 4 facing the hollow profile 2, ie on the die wall 17 thereof, before the cutting and forming process.
- the positioning device 9 can be designed, for example, as a stamp acted upon by spring force or hydraulic pressure, which is arranged in a retractable and retractable manner in one of the dies 7 or 8, here in the lower die 7. 2, the positioning device 9 is actuated and in the actuated state presses the hollow profile 2 against the side 6 of the cutting device 4.
- At least one hold-down device 10 is provided, which fixes the flange 3 of the hollow profile 2 at least during the cutting process.
- a stair-like design of the cutting edge 5 can also provide a second hold-down device 10 which fixes the hollow profile 2 in position in the shaping process or the stamping and punching process following the cutting process.
- an embossing die 11 is provided which is adjustable transversely to the longitudinal extent of the hollow profile 2 and which embosses the outside of the hollow profile 2 after the shaping process (cf. FIG. 4).
- the embossing die 11 can preferably be actuated hydraulically and acts during embossing against an internal high pressure pi which prevails within the hollow profile 2.
- the embossing die 11 can expediently be mounted on or in one of the matrices 7, 8 in an adjustable manner and, for example, be arranged such that it crosses and penetrates the cutting device 4 after the cutting process and during the embossing process in a corresponding opening 12.
- the stamp 11 moves with the cutting device 4 or the upper die 8 transversely to its embossing direction. It is conceivable here that, for example, an embossing surface 15 formed on the end face of the embossing die 11 is part of the shaping die wall 17 of the cutting device 4.
- the hollow profile 2 is embossed against the internal high pressure pi umd after the cutting process, so that an additional but optional work step can be carried out with the tool 1 with the embossing.
- At least one punch 13 is provided in the embossing die 11 and coaxially therewith, which advantageously perforates the hollow profile 2 after the completed embossing process.
- An embossing direction of the embossing die 11 is parallel to the direction of movement of the punch 13.
- this punch 13 another work step that can also be carried out optionally, namely the punching of the hollow profile 2, is integrated into the tool 1, as a result of which the manufacturing process can also be rationalized.
- Embossing or punching against the internal high pressure pi also has the advantage that previously created embossings do not adversely affect through the punching or previously punched holes through the embossing due to the internal high pressure pi, so that a high quality of the hollow profiles 2 produced is achieved can be.
- the hollow profile 2 is inserted into the tool 1, the two dies 7 and 8 being positioned in the open state, that is to say at a distance from one another.
- the positioning device 9 according to FIG. 2 presses the hollow profile 2 against the side 6 of the cutting device 4 facing the hollow profile 2, before the cutting and shaping process against the die wall 17.
- the tool is still in a partially open state, so that a simple adjustment of the hollow profile 2 in the direction of the cutting device 4 is possible.
- the cutting process takes place after positioning. 3, the upper die 8 moves towards the lower die 7 and cuts off the flange 3 of the hollow profile 2 with the cutting edge 5 located at the front of the cutting device 4 in the direction of movement. At least during the cutting process, at least one hold-down device 10 arranged in the area of the cutting edge 5 fixes the flange 3 of the hollow profile 2. After the cutting process has ended, a second hold-down device 10 fixes the remaining flange stump of the hollow profile 2 and thereby fixes the hollow profile 2 in its position. After the cutting process, a cutting waste (not shown) falls through an ejection chute 16 which, according to FIGS. 1 to 5, runs vertically in the direction of movement of the cutting device 4 in the lower die 7.
- the hollow profile blank 2 ⁇ is formed and changed by internal high pressure forming 3.
- the positioning device 9 is actively retracted or passively pushed back to a corresponding extent, that is to say the holding or positioning force of the positioning device 9 is (significantly) less than that which occurs during the shaping Forces that expand the hollow profile 2.
- an embossing die 11 which can be adjusted transversely to the longitudinal direction of the hollow profile 2, according to FIG. 4, can emboss on the hollow profile 2.
- Such an embossing process can optionally be selected. 4 the embossing die 11 moves transversely to the longitudinal extent of the hollow profile 2 through the opening 12 in the cutting device 4 and embosses an indentation into an outer wall of the hollow profile 2 with the embossing surface 15 attached at the front in the embossing direction.
- a punch 13 arranged coaxially in the stamping punch 11 can punch the hollow profile 2 after the stamping process has been completed (cf. FIG. 4).
- the punch 13 moves transversely to the direction of movement of the cutting device 4 and parallel to the embossing direction of the punch 11 and penetrates an outer wall of the hollow profile 2.
- a punch 13 is provided in each case according to FIGS. 3 and 4. However, it is also possible for a plurality of punches 13 to be arranged. It is also conceivable that perforation takes place without embossing the hollow profile 2. Due to the stamp 11 or punch 13 acting against the internal high pressure pi, it is possible to carry out both the embossing and the perforation on the hollow profile 2 without these working steps, as in a conventional production method in several steps, negatively influencing one another.
- the embossing surface 15 of the embossing stamp 11, which is arranged, for example, in the opening 12 of the cutting device 4, can form part of the side 6 of the cutting device 4, which is designed as a shaping die wall 17.
- the opening 12 only opens during an embossing or punching process and is closed during the cutting process or during the shaping process, as a result of which the shaping die wall 17 is formed entirely by the side 6 of the cutting device 4 facing the hollow profile 2 ,
- the tool 2 is opened after the cutting and shaping process and / or embossing process and / or punching process by the upper die 8 moving away from the lower die 7.
- the die 11 and the punch 13 have been inserted into the tool 1 or the cutting device 4 at least to such an extent that the two dies 7 and 8 can be easily moved apart and the hollow profile 2 can be removed from the tool 1.
- the invention provides for a tool 1, which is designed for forming a hollow profile 2 according to the hydroforming process, to provide an embossing stamp 11 for introducing an impression and therein a punch 13 for making a hole in the hollow profile 2.
- a cutting device 4 with a shaping die wall 17 can be provided.
- the invention thus enables a plurality of work steps to be combined, for example the trimming, shaping, embossing and punching of the hollow profile 2 in a production station, so that the tool 1 according to the invention enables a plurality of previously separate work steps to be carried out promptly and without removing the hollow profile 2 the tool 1 can be done.
- the steps embossing and punching can be carried out optionally, so that with the Tool 1 according to the invention, for example cutting a flange 3, and subsequent shaping and / or subsequent stamping and / or subsequent punching can be carried out.
- the side 6 of the cutting device 4, which is designed as a shaping matrix wall 17, provides a multifunctional use of the cutting device 4, the cutting device 4 being able to be implemented in a structurally simple manner and at the same time being a particularly successful constructive solution.
- the embossing die 11 or punch 13, which acts against the internal high pressure pi, can also be used for an exact embossing or perforation of the hollow profile 2, in which the embossing and punching do not adversely affect one another, so that a high-quality end product can be achieved overall.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006537101A JP2007509754A (ja) | 2003-10-28 | 2004-10-08 | 中空形材の工具及び内部高圧成形 |
CA002544242A CA2544242A1 (en) | 2003-10-28 | 2004-10-08 | Tool and internal high pressure forming of a hollow section |
EP04790191A EP1677923A1 (de) | 2003-10-28 | 2004-10-08 | Werkzeug und innenhochdruck-umformen eines hohlprofils |
US10/577,807 US20070245797A1 (en) | 2003-10-28 | 2004-10-08 | Tool and Method for the Internal High Pressure Forming of a Hollow Section |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10350151.7 | 2003-10-28 | ||
DE10350151A DE10350151B4 (de) | 2003-10-28 | 2003-10-28 | Werkzeug und Innenhochdruck-Umformen eines Hohlprofils sowie Verfahren zum Umformen eines Hohlprofils |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005046902A1 true WO2005046902A1 (de) | 2005-05-26 |
Family
ID=34584785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/011239 WO2005046902A1 (de) | 2003-10-28 | 2004-10-08 | Werkzeug und innenhochdruck-umformen eines hohlprofils |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070245797A1 (de) |
EP (1) | EP1677923A1 (de) |
JP (1) | JP2007509754A (de) |
CA (1) | CA2544242A1 (de) |
DE (1) | DE10350151B4 (de) |
WO (1) | WO2005046902A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007045098A1 (en) | 2005-10-20 | 2007-04-26 | Magna International Inc. | Multipart punch for hydro piercing |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6449104B2 (ja) * | 2015-06-02 | 2019-01-09 | 住友重機械工業株式会社 | 成形装置 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5070717A (en) * | 1991-01-22 | 1991-12-10 | General Motors Corporation | Method of forming a tubular member with flange |
DE19724037A1 (de) * | 1997-06-06 | 1998-12-10 | Audi Ag | Verfahren zum Schneiden eines Hohlkörpers |
DE19733477A1 (de) * | 1997-08-02 | 1999-02-18 | Daimler Benz Ag | Verfahren zum Herstellen eines mit einem Fügeteil verbundenen von einer Ausgangsform mittels Innenhochdruck in eine Endform umgeformten Hohlprofiles |
DE10141503C1 (de) * | 2001-08-24 | 2002-10-10 | Audi Ag | Verfahren zur Herstellung eines länglichen Hohlkörpers |
US6470546B1 (en) * | 1997-08-02 | 2002-10-29 | Daimlerchrysler Ag | Process and apparatus for producing a linkage of an air/fuel ratio detector holder to an exhaust pipe |
US20020174698A1 (en) * | 1996-11-20 | 2002-11-28 | Daimlerchrysler Ag. | Process and device for manufacturing holes on the circumference of hollow sections |
US6591648B1 (en) * | 2002-06-24 | 2003-07-15 | Greenville Tool & Die Company | Method of stamping and piercing a tube |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5813266A (en) * | 1995-10-31 | 1998-09-29 | Greenville Tool & Die Company | Method of forming and piercing a tube |
US5666840A (en) * | 1996-06-13 | 1997-09-16 | General Motors Corporation | Method for piercing two aligned holes in a hydroformed tube |
DE19805275B4 (de) * | 1998-02-11 | 2004-07-15 | Dr. Meleghy Hydroforming Gmbh & Co. Kg | Verfahren und Vorrichtung zum Einbringen eines Durchbruches in eine Wand |
US6257035B1 (en) * | 1999-12-15 | 2001-07-10 | Ti Corporate Services Limited | Compressive hydroforming |
DE10030882A1 (de) * | 2000-06-23 | 2002-01-03 | Prometall Werkzeugbau Gmbh | Präzisionsschneidverfahren und Vorrichtung |
US7249481B1 (en) * | 2006-05-01 | 2007-07-31 | Ford Global Technologies, Llc | Process for forming a hydroformed automotive component with integrated weld flange |
-
2003
- 2003-10-28 DE DE10350151A patent/DE10350151B4/de not_active Expired - Fee Related
-
2004
- 2004-10-08 US US10/577,807 patent/US20070245797A1/en not_active Abandoned
- 2004-10-08 CA CA002544242A patent/CA2544242A1/en not_active Abandoned
- 2004-10-08 WO PCT/EP2004/011239 patent/WO2005046902A1/de not_active Application Discontinuation
- 2004-10-08 JP JP2006537101A patent/JP2007509754A/ja active Pending
- 2004-10-08 EP EP04790191A patent/EP1677923A1/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5070717A (en) * | 1991-01-22 | 1991-12-10 | General Motors Corporation | Method of forming a tubular member with flange |
US20020174698A1 (en) * | 1996-11-20 | 2002-11-28 | Daimlerchrysler Ag. | Process and device for manufacturing holes on the circumference of hollow sections |
DE19724037A1 (de) * | 1997-06-06 | 1998-12-10 | Audi Ag | Verfahren zum Schneiden eines Hohlkörpers |
DE19733477A1 (de) * | 1997-08-02 | 1999-02-18 | Daimler Benz Ag | Verfahren zum Herstellen eines mit einem Fügeteil verbundenen von einer Ausgangsform mittels Innenhochdruck in eine Endform umgeformten Hohlprofiles |
US6470546B1 (en) * | 1997-08-02 | 2002-10-29 | Daimlerchrysler Ag | Process and apparatus for producing a linkage of an air/fuel ratio detector holder to an exhaust pipe |
DE10141503C1 (de) * | 2001-08-24 | 2002-10-10 | Audi Ag | Verfahren zur Herstellung eines länglichen Hohlkörpers |
US6591648B1 (en) * | 2002-06-24 | 2003-07-15 | Greenville Tool & Die Company | Method of stamping and piercing a tube |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007045098A1 (en) | 2005-10-20 | 2007-04-26 | Magna International Inc. | Multipart punch for hydro piercing |
EP1937426A1 (de) * | 2005-10-20 | 2008-07-02 | Magna International Inc. | Mehrteilige stanze zum hydraulischen lochen |
EP1937426A4 (de) * | 2005-10-20 | 2009-01-21 | Magna Int Inc | Mehrteilige stanze zum hydraulischen lochen |
CN101326022B (zh) * | 2005-10-20 | 2013-01-09 | 麦格纳国际公司 | 用于液压冲孔的组合冲头 |
Also Published As
Publication number | Publication date |
---|---|
EP1677923A1 (de) | 2006-07-12 |
DE10350151A1 (de) | 2005-06-16 |
US20070245797A1 (en) | 2007-10-25 |
JP2007509754A (ja) | 2007-04-19 |
CA2544242A1 (en) | 2005-05-26 |
DE10350151B4 (de) | 2005-10-13 |
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