WO1999033589A2 - Rohrverbindung - Google Patents
Rohrverbindung Download PDFInfo
- Publication number
- WO1999033589A2 WO1999033589A2 PCT/EP1998/008391 EP9808391W WO9933589A2 WO 1999033589 A2 WO1999033589 A2 WO 1999033589A2 EP 9808391 W EP9808391 W EP 9808391W WO 9933589 A2 WO9933589 A2 WO 9933589A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tube
- components
- longitudinal direction
- passages
- expansion
- 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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/14—Tube expanders with balls
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/06—Sinkers
-
- 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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
-
- 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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
-
- 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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/10—Needle beds
Definitions
- the invention relates to a package of several, mostly flat, plate-shaped components lying side by side, which are firmly connected to one another, and a method for its production.
- a disadvantage is that the weight of the package is drastically increased by the potting material, especially when pouring into metal.
- the cast-in package is often ten times as heavy as the package without the cast-in material, especially when the components are very thin and small workpieces, such as the blanks of a knitting machine.
- Another disadvantage is that the pouring must preferably take place at the free ends of the components, since pouring in the middle area is much more complex and, moreover, the shrinkage of the potting material must be taken into account when cooling, which requires great experience.
- the free end areas of the components often serve as functional surfaces and must be freely accessible.
- the tube used for pushing through must be less precise than a dowel pin, since it is not the play between the outer diameter of the tube in the initial state and the inner diameter of the passage of the components that determines the later movement of the components within the package, as in the case of a dowel pin. Rather, the individual components only have to be arranged in the correct relative position to one another when connecting. On the one hand, the insertion of the pipe is easy, since there may be sufficient play, approx. One to two hundredths of a millimeter, between the outside diameter of the pipe and the inside diameter of the passage. On the other hand, the connection with the components is only made by widening the tube, and thus even slight positional or dimensional deviations of the passages in the components are compensated for. This simplifies and reduces the cost of manufacturing the individual components. In addition, the tube itself only has to meet requirements with regard to the outside diameter and also the wall thickness which are clearly below the narrow tolerances of a dowel pin.
- the wall thickness of the tube is between 0.1 and 0.4 mm, while the diameter of the tube will change relatively strongly with the size of the components.
- a common diameter for components that have a height of approximately 10 to 20 mm is 3 mm.
- chrome-nickel steel is usually used for the pipe.
- the expansion of the tube is done either by means of a radially acting pressure, in that a fluid, such as hydraulic oil or air, is introduced into the tube and the pressure in the tube is increased to such an extent that the tube expands radially.
- a fluid such as hydraulic oil or air
- the tube must preferably be sealed tightly at least at one end, and the pressure must be introduced from the other, open end.
- the expansion is much easier in a mechanical way.
- a mechanical element is introduced into the tube, which exerts a radially outward force against the inner wall of the tube and thereby radially stretches the tube.
- This does not have to be the whole Scope happen, but can only on z. B. only two radially opposite sides of the case.
- This does not have to be the same over the entire length of the tube, but can be carried out individually at the desired expansion locations, viewed in the longitudinal direction of the tube, that is to say in the case of components that are spaced apart from one another, in the area between two adjacent components.
- a particularly advantageous possibility of expansion which is also possible above all with pipes of different lengths and with little wear on the components involved, is to push an expansion object longitudinally through the interior of the tube, the expansion object having a diameter which is larger than that Inner diameter of the tube, and the expansion object in particular qualitatively has the same shape of the outer contour as the inner contour of the tube.
- Such an expansion object can be an expansion mandrel, the thickest area of which lies in the front end.
- it is advantageous to push a ball with these properties through the tube which can either be pushed mechanically by means of a push rod, or can also be moved through the tube by means of compressed air, etc.
- the pipe itself must be held in the opposite direction by a stop.
- the material of the tube will no longer find any space in the area of the components due to the widening within the passages, and flow in the longitudinal direction into the adjacent areas, for example into the spacing area between the individual components. This flow of the material results in bulges of the tube in the area between the components or between the passages of the components, which additionally cause the components to be positively fixed in the desired axial position on the tube.
- the expansion in the radial direction simultaneously leads to a shortening of the tube, which, in the size relationships described, is in the range of approximately 1% of the initial length of the tube.
- This automatic shortening also occurs in particular when expanding by pushing a ball through and is advantageous because in many applications the package resulting from the interconnected components must not exceed a certain maximum length. In such a case, if you choose the maximum length of the package as the starting length of the pipes, i.e. before expanding, you can be sure that the finished package does not exceed this specified maximum limit.
- expansions are preferably provided on at least one of the end faces of the passage, which are necessary in order to allow the tube material which is displaced during the expansion of the tube to flow into this expansion, and thereby a positive fit to achieve in the longitudinal direction.
- components which do not consist in one piece but, for example, subsequently, by welding etc., of at least two components or boards lying one behind the other in the longitudinal direction only one of the two can be used for this purpose.
- the passages are dimensioned for the connection to the expanded tube, while in the other parts of the component the passages are aligned but are chosen with a larger diameter, the enlarged diameter in turn serving to accommodate the displacing tube material during expansion .
- Fig. 2 is a sectional view of a package along the line X-X;
- FIG. 3 shows another structure of the package in the same direction of view as FIG.
- FIG. 4 shows a modified package in the direction of view of FIG. 2 or
- Fig. 1 shows the package according to the invention, which consists of boards 1a and 1b lying one behind the other in the viewing direction and pipes 3 connecting these boards 1a, 1b.
- three tubes 3 are pushed parallel to one another through correspondingly aligned passages 2a, 2b, 2c of the boards 1a, 1b, on which the boards 1a, 1b are stuck.
- the three passages 2a, 2b, 2c and the tubes 3 pushed through them do not lie on a line, but form a triangle. It would also be possible to push at least one of the tubes 3 through such a passage, which is located in the area above the dash-dotted line, that is to say extends exclusively through the circuit boards 1 a.
- 1 is a needle bed of a flat knitting machine.
- FIGS. 2 to 4 show the state of the production of the connection between the tube 3 on the one hand and the plates 1a, 1b,... Or 1, 1 'on the other in the viewing direction X. - Show X.
- Fig. 2 consists of juxtaposed boards 1a, 1b, ..., which lie directly against each other in the longitudinal direction 10.
- Each board 1 a, 1 b, ... consists of two sub-boards 1, 1 ', the z. B. via a spot weld, the welds 16 are connected to one another.
- the sub-board 1 protrudes further upward, so that in a finished package the sub-boards V together form a guide for a component guided between them, the bottom of this guide being formed by the sub-boards 1.
- one of the boards consists of either three sub-boards 1, 1 ', 1, which are welded together, as shown at the left end of Fig. 2 , or only from a single sub-board 1.
- passages 2, 2 ' are present in aligned position with one another in each of the sub-boards 1, 1', but with different sizes.
- Passages 2 have a size that is only a very small game 17, For example, 1 to 2/100 mm, larger than the outer diameter 4 of the tube 3 in the initial state, the passages 2 ', which in contrast are significantly larger in the circuit boards V, and aligned, ie concentric, with the passages 2 in the sub-circuit boards 1 , and connected to each other in this relative position via the weld 16
- a tube 3 can thus be pushed through each passage 2 of the entire package, that is to say according to FIG. 1 in this case through three passages 2a, 2b, 2c.
- the tube 3 has a certain initial length La, viewed in the longitudinal direction 10, as shown in FIG. 2.
- the outer diameter of the tube 3 and also the inner diameter of the passages 2a, 2b, 2c have a round contour, but other contours can also be used.
- the tube 3 is connected to the plates 1a, 1b,...
- a ball 7 into the tube 3 in the longitudinal direction 10 from an end face and pushing it completely through the tube, the outer diameter 9 of which is greater than the inner diameter 12 of the tube 3 in the initial state.
- the ball 7 is pushed forward by means of a push rod 8 and the tube 3 presses in the longitudinal direction 10 against a stop 18 on the end face, which, however, does not protrude into the interior of the tube 3.
- the tube 3 is mechanically widened, with a cold flow, that is to say a plastic deformation of the material of the tube 3 at almost room temperature.
- the material of the tube 3 is first pushed outward until it has reached the inner circumference of the passage 2. A further escape radially outwards is not possible, which is why the tube material moves in the longitudinal direction 10 and is pressed towards the larger passages 2 ', and in the area of which then moves radially outwards, thereby forming bulges 19, 19' to the outside .
- the larger passages 2 ' should be chosen so large that these bulges 19 no longer reach the inner circumference of the larger recesses 2'.
- the displacement of the material of the tube 3 essentially radially outwards generally results in a shortening of the initial length La of the tube 3 to a length L that is approximately 0.5 to 2% shorter. Since the resulting length L represents the length of the package in the longitudinal direction 10, in that the tubes 3 generally protrude from the front over the first and last circuit board 1, it can thus be ensured that this is maintained for a predetermined upper limit of the total length of the package, provided that as the initial length La of the tubes 3, which is the same for all tubes of a package, the maximum length of the finished package is chosen.
- Fig. 3 shows - in the same direction as Fig. 2 - a package with a different inner structure.
- 3 consists of identical, each one-piece, circuit boards 1a, 1b, 1c, ... which are arranged at a certain distance 20 parallel to each other.
- the boards 1a, 1b, 1c, ... are pre-positioned at the correct distance from one another and then the tube 3 is pushed through the passages 2, the passages 2 being the smaller passages 2 in the boards 1 of FIG. 2 in correspond to their relation to tube 3.
- the desired cold flow of the material of the tube 3 is obtained by widening the tube in the form of bulges 19 and 19 'between the plates 1a, 1b, 1c, ...
- the expansion is carried out here by means of an expansion mandrel 14 which, like the ball 7, is pushed through the tube in the longitudinal direction and widens the inside diameter of the tube 3 with its widest point, and thus also the outside diameter thereof, analogously to the procedure of FIG. 2 enlarged.
- an expanding mandrel 14 has the disadvantage that the wear always takes place at the same point, namely the widest point of the expanding mandrel 14, which tapers to the rear as it progresses, while in the case of a ball 3 the wear is uniform over the entire length Spherical surface takes place.
- Fig. 4 shows a structure of a package, in which the boards 1a, 1b, 1c directly abut each other, but are each one-piece boards.
- the passages 2 are usually produced as bores or punchings.
- the passages are 2a, 2b, 2c, ... each from the end faces of the boards 1 a, 1 b, 1 c, equipped with an expansion 15 in the form of a countersink of the borehole. This widening can also only be present on one side of the board. Likewise, the expansion can only be present in certain angular ranges of the circumference of the passage.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Earth Drilling (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Tubes (AREA)
- Prostheses (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Combinations Of Printed Boards (AREA)
- Knitting Machines (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000526314A JP2002508252A (ja) | 1997-12-24 | 1998-12-21 | 管による連結 |
KR1020007007038A KR20010015894A (ko) | 1997-12-24 | 1998-12-21 | 튜브 연결구조 |
AT98966970T ATE216640T1 (de) | 1997-12-24 | 1998-12-21 | Rohrverbindung |
EP98966970A EP1044078B1 (de) | 1997-12-24 | 1998-12-21 | Rohrverbindung |
DE59803942T DE59803942D1 (de) | 1997-12-24 | 1998-12-21 | Rohrverbindung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19757962A DE19757962C2 (de) | 1997-12-24 | 1997-12-24 | Rohrverbindung |
DE19757962.0 | 1997-12-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999033589A2 true WO1999033589A2 (de) | 1999-07-08 |
WO1999033589A3 WO1999033589A3 (de) | 1999-08-26 |
Family
ID=7853443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/008391 WO1999033589A2 (de) | 1997-12-24 | 1998-12-21 | Rohrverbindung |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1044078B1 (de) |
JP (1) | JP2002508252A (de) |
KR (1) | KR20010015894A (de) |
CN (1) | CN1284902A (de) |
AT (1) | ATE216640T1 (de) |
DE (2) | DE19757962C2 (de) |
TR (1) | TR200001831T2 (de) |
WO (1) | WO1999033589A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10215554A1 (de) * | 2002-04-09 | 2003-10-30 | Universal Hydraulik Gmbh | Verfahren und Vorrichtung zum Aufweiten von Rohren |
DE10227532B4 (de) | 2002-06-20 | 2006-02-23 | Groz-Beckert Kg | Modul für Textilmaschinen, insbesondere Maschen bildende Maschinen |
DE102006043590A1 (de) | 2006-09-16 | 2008-03-27 | Sandvik Gmbh | Kugelautofrettage |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB312453A (en) * | 1928-04-13 | 1929-05-30 | Thomas Andre | Method of securing blades or strips on a tubular support |
DE713551C (de) * | 1939-05-11 | 1941-11-10 | Carl Filip Freden | Verfahren zur Herstellung von Rechen, insbesondere Schutzrechen, fuer Turbinenanlagen |
US2754573A (en) * | 1952-08-15 | 1956-07-17 | Babcock & Wilcox Co | Method of manufacturing fluid heat exchange apparatus |
US5280675A (en) * | 1992-07-13 | 1994-01-25 | The Torrington Company | Camshaft and method of making a camshaft |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4152818A (en) * | 1977-07-14 | 1979-05-08 | United Aircraft Products, Inc. | Making mechanical tube joints |
JPS59104226A (ja) * | 1982-12-08 | 1984-06-16 | Hitachi Ltd | 管状部材と環体部品の結合構造 |
JPS59156523A (ja) * | 1983-02-25 | 1984-09-05 | Toshiba Corp | 熱交換器用パイプの拡管装置 |
JPS60145228A (ja) * | 1983-12-29 | 1985-07-31 | Nippon Kentetsu Co Ltd | 伝熱管の取付方法 |
JPH02205212A (ja) * | 1989-02-02 | 1990-08-15 | Showa Alum Corp | 熱交換器におけるパイプとフィンとの固定方法 |
DE4201478C1 (en) * | 1992-01-21 | 1993-02-04 | Bayerische Motoren Werke Ag, 8000 Muenchen, De | Method for installing cams on shaft - has cam held by clamps onto hollow camshaft which is expanded under pressure to engage cam |
DE4332768C2 (de) * | 1993-09-25 | 2000-05-31 | Behr Gmbh & Co | Verfahren und Werkzeug zur Aufweitung von Metallrohren mit ovalem Querschnitt |
-
1997
- 1997-12-24 DE DE19757962A patent/DE19757962C2/de not_active Expired - Fee Related
-
1998
- 1998-12-21 TR TR2000/01831T patent/TR200001831T2/xx unknown
- 1998-12-21 KR KR1020007007038A patent/KR20010015894A/ko not_active Application Discontinuation
- 1998-12-21 EP EP98966970A patent/EP1044078B1/de not_active Expired - Lifetime
- 1998-12-21 JP JP2000526314A patent/JP2002508252A/ja active Pending
- 1998-12-21 WO PCT/EP1998/008391 patent/WO1999033589A2/de not_active Application Discontinuation
- 1998-12-21 CN CN98813675A patent/CN1284902A/zh active Pending
- 1998-12-21 DE DE59803942T patent/DE59803942D1/de not_active Expired - Lifetime
- 1998-12-21 AT AT98966970T patent/ATE216640T1/de not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB312453A (en) * | 1928-04-13 | 1929-05-30 | Thomas Andre | Method of securing blades or strips on a tubular support |
DE713551C (de) * | 1939-05-11 | 1941-11-10 | Carl Filip Freden | Verfahren zur Herstellung von Rechen, insbesondere Schutzrechen, fuer Turbinenanlagen |
US2754573A (en) * | 1952-08-15 | 1956-07-17 | Babcock & Wilcox Co | Method of manufacturing fluid heat exchange apparatus |
US5280675A (en) * | 1992-07-13 | 1994-01-25 | The Torrington Company | Camshaft and method of making a camshaft |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 008, no. 220 (M-330), 6. Oktober 1984 & JP 59 104226 A (HITACHI SEISAKUSHO KK), 16. Juni 1984 * |
PATENT ABSTRACTS OF JAPAN vol. 009, no. 311 (M-436), 7. Dezember 1985 & JP 60 145228 A (NIPPON KENTETSU KK), 31. Juli 1985 * |
Also Published As
Publication number | Publication date |
---|---|
EP1044078A1 (de) | 2000-10-18 |
CN1284902A (zh) | 2001-02-21 |
DE19757962A1 (de) | 1999-07-08 |
TR200001831T2 (tr) | 2001-01-22 |
DE19757962C2 (de) | 2003-05-28 |
KR20010015894A (ko) | 2001-02-26 |
JP2002508252A (ja) | 2002-03-19 |
ATE216640T1 (de) | 2002-05-15 |
WO1999033589A3 (de) | 1999-08-26 |
DE59803942D1 (de) | 2002-05-29 |
EP1044078B1 (de) | 2002-04-24 |
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