EP1563925A1 - Verfahren zur Herstellung von Durchzügen in Sammelrohren und Vorrichtung zur Durchführung des Verfahrens - Google Patents
Verfahren zur Herstellung von Durchzügen in Sammelrohren und Vorrichtung zur Durchführung des Verfahrens Download PDFInfo
- Publication number
- EP1563925A1 EP1563925A1 EP05001631A EP05001631A EP1563925A1 EP 1563925 A1 EP1563925 A1 EP 1563925A1 EP 05001631 A EP05001631 A EP 05001631A EP 05001631 A EP05001631 A EP 05001631A EP 1563925 A1 EP1563925 A1 EP 1563925A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- punch
- stage
- collecting tube
- wall thickness
- passages
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
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
Definitions
- the invention relates to a two-stage process for the production of passages in thick-walled headers according to the preamble of claim 1 and an apparatus for performing the method according to the preamble of claim 8.
- the well-known two-stage process allows the production of slots extending in the longitudinal direction of the tube or passages as well as extending transversely to the longitudinal direction Slots for inserting flat tubes.
- the first process step, the Sawing is thus cutting, and the second step, the punching a non-cutting forming.
- the disadvantage here is the process step of Sawing, for which special saw blades and sawing devices needed become.
- the first step of the two-stage Process is performed by pushing, peeling or planing.
- the collective term "pushing" used is a corresponding stamp, chisel or paring knife guided transversely to the longitudinal direction of the manifold to a part of the Remove pipe wall thickness by cutting.
- This targeted material weakening a minimum pipe wall thickness remains, so that the pipe inside is not opened.
- the shock process a cut length L, which forms a chord in the pipe cross-section.
- the cut length is equal to or smaller than the inside diameter of the manifold. This results in the advantage of a maximum Passage length, d. H. the ratio of outside diameter of the Collection tube to the depth of the flat tubes is maximum.
- a groove encountered which may have different cross-sections, for. B. a rectangular or a triangular cross-section.
- These different Cross-sectional design can be done by choosing an appropriate stamp or impaction tool. Such a tool can be light and be exchanged quickly.
- a puncture mark transverse to the previous one Pushing motion pushed into the pipe, bringing the final draft form is produced by tearing and material displacement.
- the tube is thus opened, but fall no chips at this second step, so no contamination of the tube interior can occur. Due to the material weakening in the first step of the process can be without inner die and without Deformation of the pipe wall can be produced. Depending on the above-mentioned minimum wall thickness after the first process step formed the walls of the passage, which the flat tube ends include.
- the object of the invention is also achieved by a device with the features of claim 8, wherein according to the invention a split Tool provided with an opening for receiving a manifold is.
- the manifold is thus firmly clamped in the tool.
- the tool according to the invention has an approximately tangential to the manifold extending first channel for guiding the punch or peeling knife on.
- the cutting tool, which is the first cutting process step is carried out over the entire working stroke, so that a clean chip formation and a defined chip ejection takes place.
- the device also has a direction perpendicular to the first channel arranged second channel for guiding a passage punch on which in a second process step, i. H. subsequently to the impact process penetrates into the pipe material.
- those for the production at least one thread required tools in a device arranged and guided. It can advantageously several channels be provided in the longitudinal direction of the tube, in which paring knife and thread punch guided and operated. With that you can all passages provided on a manifold simultaneously, d. H. in successive process steps are produced. After that will opened the tool and removed the finished manifold with passages.
- the device 1 shows a device 1 for producing passages on a thick-walled collection tube 2, which is inserted into the device 1.
- the device 1 comprises a split tool 3, which consists of a lower part 3a and an upper part 3b and has a receiving opening 4 adapted to the cross section of the collecting tube 2. Both tool parts 3 a, 3 b are clamped together by clamping means, not shown, so that the collecting tube 2 is firmly received in the tool 3.
- the tool 3 has in the region of the receiving opening 4, which here has a circular cross-section, a vertically extending in the drawing first channel 5 for a peeling die 6, which is guided in the channel 5 in the longitudinal direction.
- the peeling punch 6 has a cutting edge, not shown, which cuts into the material of the collecting tube 2 and separates a chip.
- the first channel 5 has a longitudinal axis m which extends approximately tangentially to the outer circumference of the collecting tube 2.
- a second channel 7 for guiding a slot punch 8 in the tool 3 is arranged, with a channel axis n which is perpendicular to the channel axis m of the first channel 5.
- the slot punch 8 is known per se and has an elongate cross section, not shown here, which corresponds to the shape of the passages to be produced or the flat tube ends to be inserted into the passages.
- the slot punch 8 has on the front side a cutting edge 8a, which penetrates into the tube material of the collecting tube 2.
- the method according to the invention for producing passages is explained below with reference to the device 1 described above.
- the first method step consists in that the peeling punch 6 is pushed along the longitudinal axis m through the first channel 5, lifting a chip from the circumference of the collecting tube 2 with its cutting edge (not shown) and ejecting it at the end of the channel 5 (in the drawing below). After ejection of the peeling ram 6 is retracted to its initial position shown in the drawing. By the impact or peeling process is on the circumference of the manifold 2, which is shown for the most part hatched, a running in the tangential direction groove 9 formed, which is shown as a non-hatched circle segment 9.
- the collecting tube 2 generally has a wall thickness s 0 , the wall thickness at the weakest point in the region of the tangential groove is 9 s min , ie the collecting tube 2 is closed inwardly in the region of the tangential groove 9.
- the wall thickness s 0 is in aluminum tubes in the range of several millimeters, whereas s min is a few tenths of a millimeter. On the one hand, this minimum wall thickness prevents the penetration of chips into the interior of the pipe and, on the other hand, it is necessary to form a passage wall in the subsequent process step.
- the second method step consists in that the slot punch 8 is moved in the direction of the channel axis n onto the collecting tube 2 until the cutting edge 8a enters the groove 9 and hits the collecting tube 2 with the reduced minimum wall thickness S min .
- the further movement of the punch 8 in the direction of the center of the tube M initially leads to a rupture of the remaining wall thickness and a subsequent material displacement, so that a passage corresponding to the shape of the punch 8 in the manifold 2 is formed.
- the extension of the slot punch 8 corresponds approximately to the inner diameter of the collecting tube 2.
- the slot punch 8 is withdrawn after the "tearing" of the passage, not shown in its final form back into its initial position shown in the drawing.
- the second process step is completed and the final shape of the passage, not shown, produced in the manifold 2.
- the manifold 2 when used as a heat exchanger, z. Example, as a gas cooler of a C02-powered automotive air conditioning on a plurality of passages that can be produced simultaneously with the device described above, provided that the first and second channels 5, 7 shown in Fig. 1 at a distance of the passages in the tool 3 are.
- the punches 6 and 8 can each be actuated simultaneously and in succession, so that all passages can be produced simultaneously in a tool clamping.
- Fig. 2 shows a cross section through the collecting tube 2 after performing the first process step, ie after pushing the tangential groove 9.
- the groove 9 has in section a circular segment with a chord of length L, where L represents the cutting length of the groove 9.
- the thick-walled manifold 2 has an inner diameter DI. To produce an optimal draft, the maximum cutting length L max should not exceed the dimension of the inside diameter DI.
- FIG. 3 shows a peeling stamp 10 in two views with different peeling widths H1 and H2, where H2 ⁇ H1.
- H1 corresponds to the height of a flat tube, not shown, which is inserted into the passage, not shown.
- H2 ⁇ H1 With a peeling width of H2 ⁇ H1, the walls of the passage are relatively low after forming the passages with the slot punch 8, while with a peel width of H1 the walls of the passage are relatively low due to low material displacement.
- the peeling width H1, H2 of the tangential groove 9 can thus influence the height of the passage walls.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
Description
- Fig. 1
- eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens,
- Fig. 2
- einen Querschnitt eines Sammelrohres nach Durchführung des ersten Verfahrensschrittes und
- Fig. 3
- eine Ausbildung eines Schälmessers mit unterschiedlichen Schälbreiten.
Claims (8)
- Zweistufiges Verfahren zur Herstellung von Durchzügen in dickwandigen Sammelrohren von Wärmeübertragern, wobei die Durchzüge als sich quer zur Längsachse des Sammelrohres (2) erstreckende Schlitze zur Aufnahme von Flachrohren ausgebildet sind, wobei in einer ersten Stufe des Verfahrens eine Reduzierung der Rohrwandstärke s0 im Bereich der Durchzüge mittels eines spangebende Verfahrensschrittes und in einer zweiten Stufe des Verfahrens eine Materialverdrängung durch Eindringen eines Durchzugsstempels (8) in den Bereich reduzierter Wandstärke erfolgt, dadurch gekennzeichnet, dass die Spanabhebung in der ersten Stufe durch Stoßen ausgeführt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Stoßen mittels eines quer zur Längsachse des Sammelrohres (2) geführten Stempels (6) erfolgt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Spanabhebung, ausgehend von einer anfänglichen Wandstärke s0, nur bis zu einer minimalen Wandstärke smin durchgeführt wird.
- Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass durch den Vorgang des Stoßens eine Kreissehne mit einer Schnittlänge L erzeugt wird, die kleiner als der oder gleich dem Innendurchmesser DI des Sammelrohres (2) ist.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass im Sammelrohr (2) mindestens eine querverlaufende Nut (Tangentialnut 9) erzeugt wird, die einen rechteck- oder dreieckförmigen Querschnitt mit einer Schälbreite H aufweist.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Durchzugsstempel (8) in der zweiten Stufe des Verfahrens quer zur Richtung der Stoßbewegung der ersten Stufe geführt wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass durch das Eindringen des Durchzugsstempels (8) die Endform der Durchzüge hergestellt wird.
- Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 7, gekennzeichnet durch ein geteiltes Werkzeug (3, 3a, 3b) mit einer Aufnahmeöffnung (4) für das Sammelrohr (2), einem tangential zur Aufnahmeöffnung (4) angeordneten ersten Kanal (5) zur Führung des Schälstempels (6) und mit einem senkrecht zum ersten Kanal (5) angeordneten zweiten Kanal (7) zur Führung des Durchzugsstempels (8).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200410007686 DE102004007686A1 (de) | 2004-02-16 | 2004-02-16 | Verfahren zur Herstellung von Durchzügen in Sammelrohren und Vorrichtung zur Durchführung des Verfahrens |
| DE102004007686 | 2004-02-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1563925A1 true EP1563925A1 (de) | 2005-08-17 |
| EP1563925B1 EP1563925B1 (de) | 2008-05-28 |
Family
ID=34684090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20050001631 Expired - Lifetime EP1563925B1 (de) | 2004-02-16 | 2005-01-27 | Verfahren zur Herstellung von Durchzügen in Sammelrohren und Vorrichtung zur Durchführung des Verfahrens |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1563925B1 (de) |
| DE (2) | DE102004007686A1 (de) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890452A (zh) * | 2010-06-22 | 2010-11-24 | 无锡曙光模具有限公司 | 一种用于加工轿车座椅下拉巴管的切口打扁模具 |
| CN101954414A (zh) * | 2010-06-16 | 2011-01-26 | 无锡曙光模具有限公司 | 一种环形管件打扁成型模具 |
| CN103692157A (zh) * | 2013-11-20 | 2014-04-02 | 无锡曙光模具有限公司 | 轿车座椅头枕管件的齿形成形模具 |
| CN103862232A (zh) * | 2013-11-20 | 2014-06-18 | 无锡曙光模具有限公司 | 轿车座椅头枕管件的斜齿形成型模具 |
| CN104084475A (zh) * | 2014-06-26 | 2014-10-08 | 南京惠德机械有限公司 | 管件切口模 |
| CN104384370A (zh) * | 2014-11-12 | 2015-03-04 | 浙江德清中正建筑机械有限公司 | 钢管快速冲压分段机 |
| CN108817220A (zh) * | 2018-05-25 | 2018-11-16 | 上海加冷松芝汽车空调股份有限公司 | 一种用于车用空调冷凝器集流管隔片槽的冲压装置及冲压方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1808050A1 (de) * | 1968-11-09 | 1970-05-27 | Osthoff Dipl Wirtsch Leopold | Vorrichtung zum Stanzen von Leochern in die Wandung von Hohlkoerpern beliebigen Querschnitts |
| JPS6072620A (ja) * | 1983-09-30 | 1985-04-24 | Miyagi Seiki Kk | パイプの孔加工方法及びその装置 |
| US5202543A (en) * | 1990-10-31 | 1993-04-13 | Usui Kokusai Sangyo Kaisha Ltd. | Manufacturing process of a fuel delivery rail assembly |
| EP1188498A2 (de) * | 2000-09-12 | 2002-03-20 | Denso Corporation | Verfahren und Vorrichtung zur Lochung eines Rohres |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4442040A1 (de) * | 1994-11-25 | 1996-05-30 | Behr Gmbh & Co | Wärmetauscher mit einem Sammelrohr |
| DE19945223A1 (de) * | 1999-09-21 | 2001-03-22 | Behr Gmbh & Co | Wärmeübertrager für ein Kraftfahrzeug |
| DE10103176B4 (de) * | 2001-01-22 | 2010-06-02 | Behr Gmbh & Co. Kg | Verfahren zum Einbringen von Flachrohreinsteckschlitzen in ein Sammelrohr |
-
2004
- 2004-02-16 DE DE200410007686 patent/DE102004007686A1/de not_active Withdrawn
-
2005
- 2005-01-27 EP EP20050001631 patent/EP1563925B1/de not_active Expired - Lifetime
- 2005-01-27 DE DE200550004235 patent/DE502005004235D1/de not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1808050A1 (de) * | 1968-11-09 | 1970-05-27 | Osthoff Dipl Wirtsch Leopold | Vorrichtung zum Stanzen von Leochern in die Wandung von Hohlkoerpern beliebigen Querschnitts |
| JPS6072620A (ja) * | 1983-09-30 | 1985-04-24 | Miyagi Seiki Kk | パイプの孔加工方法及びその装置 |
| US5202543A (en) * | 1990-10-31 | 1993-04-13 | Usui Kokusai Sangyo Kaisha Ltd. | Manufacturing process of a fuel delivery rail assembly |
| EP1188498A2 (de) * | 2000-09-12 | 2002-03-20 | Denso Corporation | Verfahren und Vorrichtung zur Lochung eines Rohres |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 009, no. 213 (M - 408) 30 August 1985 (1985-08-30) * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954414A (zh) * | 2010-06-16 | 2011-01-26 | 无锡曙光模具有限公司 | 一种环形管件打扁成型模具 |
| CN101954414B (zh) * | 2010-06-16 | 2013-05-01 | 无锡曙光模具有限公司 | 一种环形管件打扁成型模具 |
| CN101890452A (zh) * | 2010-06-22 | 2010-11-24 | 无锡曙光模具有限公司 | 一种用于加工轿车座椅下拉巴管的切口打扁模具 |
| CN101890452B (zh) * | 2010-06-22 | 2012-12-26 | 无锡曙光模具有限公司 | 一种用于加工轿车座椅下拉巴管的切口打扁模具 |
| CN103862232B (zh) * | 2013-11-20 | 2016-04-06 | 无锡曙光模具有限公司 | 轿车座椅头枕管件的斜齿形成型模具 |
| CN103862232A (zh) * | 2013-11-20 | 2014-06-18 | 无锡曙光模具有限公司 | 轿车座椅头枕管件的斜齿形成型模具 |
| CN103692157B (zh) * | 2013-11-20 | 2016-02-03 | 无锡曙光模具有限公司 | 轿车座椅头枕管件的齿形成形模具 |
| CN103692157A (zh) * | 2013-11-20 | 2014-04-02 | 无锡曙光模具有限公司 | 轿车座椅头枕管件的齿形成形模具 |
| CN104084475A (zh) * | 2014-06-26 | 2014-10-08 | 南京惠德机械有限公司 | 管件切口模 |
| CN104084475B (zh) * | 2014-06-26 | 2016-08-31 | 南京惠德机械有限公司 | 管件切口模 |
| CN104384370A (zh) * | 2014-11-12 | 2015-03-04 | 浙江德清中正建筑机械有限公司 | 钢管快速冲压分段机 |
| CN104384370B (zh) * | 2014-11-12 | 2016-07-06 | 浙江德清中正建筑机械有限公司 | 钢管快速冲压分段机 |
| CN108817220A (zh) * | 2018-05-25 | 2018-11-16 | 上海加冷松芝汽车空调股份有限公司 | 一种用于车用空调冷凝器集流管隔片槽的冲压装置及冲压方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1563925B1 (de) | 2008-05-28 |
| DE102004007686A1 (de) | 2005-09-01 |
| DE502005004235D1 (de) | 2008-07-10 |
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