EP1986801A1 - Method and device for producing a cutout or aperture in the wall of a component formed according to the hydroforming process - Google Patents
Method and device for producing a cutout or aperture in the wall of a component formed according to the hydroforming processInfo
- Publication number
- EP1986801A1 EP1986801A1 EP07702923A EP07702923A EP1986801A1 EP 1986801 A1 EP1986801 A1 EP 1986801A1 EP 07702923 A EP07702923 A EP 07702923A EP 07702923 A EP07702923 A EP 07702923A EP 1986801 A1 EP1986801 A1 EP 1986801A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpiece
- punch
- tool
- wall
- forming
- 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.)
- Granted
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
- 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
-
- 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 method and a device for producing a cutout or opening in the wall of a formed by the hydroforming process component, such as hollow body, which is still in the forming tool, with subsequent fine machining of the surface.
- apertures or cutouts can also be carried out from the inside to the outside (DE 1 552 122 A1), in that the wall is broken or cut out by increasing the internal pressure into a tool recess, wherein a outwardly displaceable support punch is provided in the tool recess can be.
- the invention is therefore based on the object to provide a method and an apparatus of the aforementioned type, which avoids the difficulties outlined above and in which the measures described above or the like unnecessary.
- the stated object is achieved in a method of the type mentioned in that initially the wall of the stored in the forming tool and fixed by sealing stamp and positioned starting work piece with the aid of a punch is abruptly pre-cut to a residual wall thickness.
- the sudden action of the punch is realized by a distance between the upper part of the punch and Hydrozy-. This distance serves to avoid the acceleration section of the hydraulic cylinder.
- the punch is withdrawn to the lateral surface of the tool.
- the sealing dies push the exit piece to a new position to change the shape of the starting work piece, i. H. Elongation in the hydroforming, to compensate and the precut area, i. the breaking point relative to the punch to position accurately.
- the internal pressure increases, and during the forming process, the cutting process of the cut-outs from the component is carried out according to known methods described above, from outside to inside and / or from inside to outside.
- the pre-cut part of the wall of the component d. H. the predetermined breaking point previously generated by the embossing edge of the punch, easily and cleanly separated by abrupt and / or multiple movements of the punch between the lower and upper dead centers.
- a complete substructure is carried out by the above-described non-cutting shaping in order to prevent inclination, edge and ridge formation of the cut and to bring in a certain shape contour having breakthroughs or cutouts.
- This operation is by means of axial movements of the workpiece by means of the sealing stamp and vertical movements of the punch, which has a corresponding engraving in its front and / or side surface realized.
- a fine machining of the surface of the component is performed.
- This fine machining of the surface of the component is realized during the removal process from the tool by cold drawing of the workpiece by a drawing ring mounted in the tool by means of simultaneous axial displacement and rotation of the workpiece by the sealing punch.
- the combined internal high pressure and non-cutting shaping method according to the invention makes it possible to perform any breakthroughs and cutouts on the workpiece and a fine machining of the surface of the component with high accuracy in a single combined forming, punching, bending, Einsenk-, Ziehräumwerkmaschine.
- this method can be carried out by appropriate joint control of the internal high pressure, the feed, dead play and the speed of the punch, the Nachschiebung and axial position of the output piece and the axial feed, the shift and rotation of the workpiece practically in one operation.
- FIG. 1 shows a longitudinal section through a device for carrying out the method.
- Fig. 2 is a cross-section through the device of Fig. 2;
- FIGs 3, 6, 11, 14 and 19 are the longitudinal sections through the apparatus of Figure 1 in different stages.
- Fig. 5 is an enlarged partial cross section through the device
- Fig. 21 is a diagram explaining the operation of the device.
- Fig. 1 shows a longitudinal section of an apparatus for carrying out the method
- Fig. 2 shows a cross section of such a device in a starting position at the beginning of the method.
- the device or the tool has a tool 1, in which the workpiece 2, in particular a holding tube for a headrest of vehicle seats is inserted.
- the workpiece 2 is acted upon by sealing stamps 3, 4 end.
- Via an opening 5 the fluid for performing the hydroforming can be introduced into the hollow workpiece 2.
- the openings or cutouts in the wall of the workpiece 2 are introduced by means of punch punches 8, 10, act on the hydraulic cylinder 6, 7.
- the punches are held by yokes 9, 11 with bearing areas 12, 14, which are adjustable in height adjustable.
- a die 17 or a drawing ring is arranged on the side of the tool on which the workpiece is introduced or removed. Furthermore, one or two part-circular grooves 22 are introduced into the punches 8, 10, which serve to edge straightening of the introduced apertures or cutouts.
- a first step the workpiece 2 positioned by the sealing rams 3 is pre-cut by the punches 8, 10 in an impact-like or jerky manner.
- the punch 10 which then causes a complete cutout, the yoke 11 is further extended, so that there is a smaller distance ⁇ ⁇ . A push is going through
- FIGS. 4 and 5 show enlargements for this purpose. The impact introduces a pre-damage into the material.
- FIGS. 7-10 illustrate the subsequent cutting process under the influence of the interior elevation. pressure.
- the displaceable punch moves from outside to inside (FIGS. 8, 9) or from inside to outside (FIGS. 7, 10).
- the wall of the workpiece 2 applies to the inside 24,25 of the tool.
- Cutting edges 26, 27 are formed on the cutouts or averages.
- a subsequent method step which serves for edge aftertreatment or for introducing openings or cutouts with a specific shape contour.
- the punch 8, 10 with the cut sheet 28 or formed sheet metal portion 31 is further guided in the direction of travel in the tool, so that the edge portions 29, 30 of the cutouts or openings are aligned with the engraved groove 22 in the punch head.
- the sealing rams 3, 4 are moved axially and in this way the possibly deformed by the cutting process edges straightened by the forced movement into the grooves 22.
- Such reciprocation and the effects of straightening the edge portions (29, 30, 32) are apparent from Figs. 14-18.
- the surface calibration is then followed by a drawing process.
- the formed workpiece 2 is pulled through the die 17 under preferably simultaneous rotations and, due to the drawing ring, is straightened with regard to its mantle surface 33.
- the process sequence is finally shown with the aid of FIGS. 21-27.
- the workpiece 2 is received by the sealing dies 3, 4 and positioned by axial movement in the tool.
- puncture acting punch 8, 10 a pre-damage is introduced into the wall.
- increasing the internal pressure then follows by sudden and / or multiple movement of the punch the actual cut-out or average.
- the edges are forced by axial movement of the workpiece in an engraved groove 22 in the punch. This is followed by the calibration process with subsequent removal of the workpiece.
- Fig. 28 shows the velocities of the respective punch, as they result from the individual distances ⁇ i ⁇ 2 between the upper part of the punch and the hydraulic cylinders.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006007224A DE102006007224A1 (en) | 2006-02-15 | 2006-02-15 | Method and device for producing a cutout or opening in the wall of a formed by the hydroforming process component |
PCT/EP2007/000495 WO2007093269A1 (en) | 2006-02-15 | 2007-01-22 | Method and device for producing a cutout or aperture in the wall of a component formed according to the hydroforming process |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1986801A1 true EP1986801A1 (en) | 2008-11-05 |
EP1986801B1 EP1986801B1 (en) | 2010-05-26 |
Family
ID=37898652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07702923A Not-in-force EP1986801B1 (en) | 2006-02-15 | 2007-01-22 | Method and device for producing a cutout or aperture in the wall of a component formed according to the hydroforming process |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1986801B1 (en) |
CN (1) | CN101454093B (en) |
AT (1) | ATE468930T1 (en) |
DE (2) | DE102006007224A1 (en) |
WO (1) | WO2007093269A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102728701B (en) * | 2011-04-14 | 2014-10-01 | 宝山钢铁股份有限公司 | Hydraulic synchronous punching device and method |
CN102615165A (en) * | 2012-04-09 | 2012-08-01 | 吉林省元隆达工装设备有限公司 | Punching mechanism |
DE102013003118B4 (en) * | 2013-02-25 | 2015-03-26 | Jenoptik Automatisierungstechnik Gmbh | A method for disposing of a Bußens incurred in a perforation process of a hollow section |
CN104096742B (en) * | 2013-04-15 | 2016-08-10 | 宝山钢铁股份有限公司 | Keep the hydro piercing method and device of workpiece wall flatness |
CN104511943A (en) * | 2013-09-30 | 2015-04-15 | 哈尔滨飞机工业集团有限责任公司 | Trimming method of edge sealing frame type part hydraulically formed based on a rubber bladder |
CN105583288A (en) * | 2016-01-27 | 2016-05-18 | 施密特汽车管件(安徽)有限公司 | Punching device for oil cylinder pipe |
CN105598249B (en) * | 2016-03-10 | 2017-09-12 | 哈尔滨奔马科技有限公司 | A kind of method and pipe fitting for obtaining high flanging hollow pipe fitting |
CN105921585A (en) * | 2016-04-29 | 2016-09-07 | 保隆(安徽)汽车配件有限公司 | Punching method for internal high pressure forming pipe fitting |
CN107931408A (en) * | 2017-11-30 | 2018-04-20 | 苏州紫荆清远新能源汽车技术有限公司 | A kind of boring device of interior high-pressure molding part |
CN109570317A (en) * | 2018-12-13 | 2019-04-05 | 安徽江淮汽车集团股份有限公司 | Liquid-filling shaping mold |
CN111434408A (en) * | 2019-01-14 | 2020-07-21 | 无锡朗贤轻量化科技股份有限公司 | Flexible cross beam type spiral locking pipe fitting or sectional material hydraulic forming process |
CN111496059A (en) * | 2019-01-14 | 2020-08-07 | 无锡朗贤轻量化科技股份有限公司 | Hydraulic forming process for locking pipe fitting or profile by flexible cross beam type oil cylinder |
CN111496056A (en) * | 2019-01-14 | 2020-08-07 | 无锡朗贤轻量化科技股份有限公司 | Hydraulic forming process for locking pipe fitting or profile by flexible cross beam type pull rod |
CN112170610B (en) * | 2020-09-15 | 2021-12-14 | 安徽江淮汽车集团股份有限公司 | Liquid-filling forming die and liquid-filling forming method |
CN112692150A (en) * | 2020-12-11 | 2021-04-23 | 星火智慧(杭州)信息科技有限公司 | Divide water collector internal expanding machine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19647963C2 (en) * | 1996-11-20 | 1998-11-26 | Daimler Benz Ag | Method and device for producing holes on the circumference of hollow profiles |
DE19805275B4 (en) * | 1998-02-11 | 2004-07-15 | Dr. Meleghy Hydroforming Gmbh & Co. Kg | Method and device for making an opening in a wall |
JP4218917B2 (en) * | 1999-09-24 | 2009-02-04 | 株式会社イノアックコーポレーション | Machining method for recess of headrest stay |
JP2001170718A (en) * | 1999-12-13 | 2001-06-26 | Nissan Motor Co Ltd | Hydraulic punching method for cylindrical member |
DE10328452B3 (en) * | 2003-06-25 | 2004-12-09 | Daimlerchrysler Ag | Production of a hole on the outer periphery of a closed hollow profile having high inner pressure comprises moving a stamp in a guiding hole of a deforming tool with a drive part and subjecting the stamp to drive contours of the drive part |
DE102004007056B4 (en) * | 2004-02-13 | 2006-02-09 | Daimlerchrysler Ag | Method and device for producing a circumferentially closed hollow profile |
CN2770952Y (en) * | 2005-02-07 | 2006-04-12 | 江西本草天工科技有限责任公司 | Apparatus for preventing tablet compressing machine from being sticked with high pressure head and sticking-proof tablet compressing machine |
-
2006
- 2006-02-15 DE DE102006007224A patent/DE102006007224A1/en not_active Withdrawn
-
2007
- 2007-01-22 EP EP07702923A patent/EP1986801B1/en not_active Not-in-force
- 2007-01-22 CN CN2007800055089A patent/CN101454093B/en not_active Expired - Fee Related
- 2007-01-22 DE DE502007003933T patent/DE502007003933D1/en active Active
- 2007-01-22 WO PCT/EP2007/000495 patent/WO2007093269A1/en active Application Filing
- 2007-01-22 AT AT07702923T patent/ATE468930T1/en active
Non-Patent Citations (1)
Title |
---|
See references of WO2007093269A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101454093B (en) | 2012-04-18 |
WO2007093269A1 (en) | 2007-08-23 |
DE502007003933D1 (en) | 2010-07-08 |
CN101454093A (en) | 2009-06-10 |
DE102006007224A1 (en) | 2007-08-16 |
ATE468930T1 (en) | 2010-06-15 |
EP1986801B1 (en) | 2010-05-26 |
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