US20030005739A1 - Method and apparatus for producing a rotationally symmetric component - Google Patents
Method and apparatus for producing a rotationally symmetric component Download PDFInfo
- Publication number
- US20030005739A1 US20030005739A1 US10/176,080 US17608002A US2003005739A1 US 20030005739 A1 US20030005739 A1 US 20030005739A1 US 17608002 A US17608002 A US 17608002A US 2003005739 A1 US2003005739 A1 US 2003005739A1
- Authority
- US
- United States
- Prior art keywords
- roll
- profiled
- rolls
- annular component
- component
- 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.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
Definitions
- the present invention relates to a method and an apparatus for producing a rotationally symmetric component by means of rolling.
- the present invention relates in particular to a method and an apparatus for producing a synchronizer sleeve for the gearbox of a motor vehicle.
- ring rolling There are two kinds of ring rolling: these are radial ring rolling on the one hand, and metal spinning on the other.
- radial ring rolling an annular blank is used as a starting product and deformed between a rotating outer roll and a mandrel arranged on the inner side or an inner roll.
- a blank which can be produced at a comparatively moderate price, is in this way deformed by said rolling into an annular component having a large diameter.
- the inner circumferential surface or the outer circumferential surface can be profiled.
- Metal spinning means that an annular blank is deformed between a plurality of rolls arranged on the outer circumferential surface. In this case, an external profile can be formed on the blank. These profiles can be produced without the bevels which are typical of ring rolling. In other words, 90° groove recesses are possible in the case of metal spinning.
- the present invention provides a method having the features of claim 1.
- the apparatus according to the present invention is disclosed in claim 10.
- the annular blank is first deformed into a profiled annular component by means of ring rolling between a first inner roll and a first outer roll in a diameter-enlarging mode.
- This profiled annular component is provided on the outer circumferential surface and/or on the inner circumferential surface thereof with a profile.
- This first step of the method according to the present invention is stopped, when, due to radial growth, the profiled annular component comes into contact with at least one additional outer roll.
- Said one or said plurality of outer rolls as well as said first outer roll are arranged relative to one another in such a way that the portions of the individual rolls which are in contact with the profiled annular component during the rolling process are located on a common circular path.
- the profiled annular component is deformed on the outer circumferential surface thereof in a profiling mode by at least one of the outer rolls which effectively limit the radial growth at the end of the first step. Also on the inner circumferential surface thereof, the profiled annular component is deformed in a profiling mode without any radial growth in said second step so that the production of profiles without any bevels (e.g. a 90° groove recess) is made possible.
- a finished rotationally symmetric component which is profiled both on its inner circumferential surface and on its outer circumferential surface, can be produced by means of rolling alone. It follows that, by means of the method according to the present invention, the final contour of the component can be produced, with simultaneous work hardening of the inner and outer circumferential surfaces produced by means of rolling, especially cold rolling.
- FIG. 1 shows a blank prior to the first method step
- FIG. 2 shows a profiled annular component produced by deforming the blank, which is shown in FIG. 1, at the end of the first method step, and
- FIG. 3 shows a synchronizer sleeve for a gearbox which has been produced by further deforming the profiled annular component shown in FIG. 2, after the end of the second step.
- FIG. 1 a blank is shown, which has cylindrical inner and outer circumferential surfaces 1 a , 1 b .
- Reference numeral 2 stands for a first outer roll
- reference numeral 3 stands for a first inner roll.
- the first inner roll 3 has a cylindrical profile in the case of the embodiment shown
- the first outer roll 2 has a profiled outer circumferential surface with an inwardly tapering recess having a bottom 2 a which extends in the axial direction of the roll 2 and from which a projection 2 b having a rectangular cross-section projects radially outwards.
- the projection 2 b extends such that its respective outer surfaces extend at right angles to and parallel to the axis of rotation of said first outer roll 2 .
- the blank 1 shown in FIG. 1 is deformed into a profiled annular component 4 of the type shown in FIG. 2.
- the enveloping surface of the profiled annular component 4 which comprises the outer contour of said profiled annular component 4 , corresponds to the contour of the recess, without the projection 2 b , formed on the outer circumferential surface of the first outer roll.
- the profiled annular component 4 has an outwardly opening groove 4 b the cross-section of which increases in size in the radial direction and the groove bottom of which is formed by being brought into contact with the end face of the projection 2 b during the rolling process.
- the outwardly broadening cross-sectional geometry of the groove 4 b is obtained due to the material flow during the rolling process.
- the material pressed radially outwards is not able to flow onto the lateral surfaces of the projection 2 b in planar contact therewith.
- the material of the blank 1 is deformed radially outwards during the ring rolling process, but it is able to flow in the axial direction only to a very limited extent.
- the blank 1 shown in FIG. 1 is subjected to ring rolling so as to form the profiled annular component 4 shown in FIG. 2, only the first outer roll 2 and the first inner roll 3 are in contact with the respective circumferential surfaces 1 a , 1 b of the blank 1 at the beginning.
- the blank 1 grows radially outwards until a point is reached at which additional outer rolls, which are arranged outside of the blank 1 and which are not shown here, come into contact with the outer circumferential surface of the profiled annular component 4 .
- the finished component to be produced by means of rolling in this case a synchronizer sleeve 6 , is defined as far as its contour comprising the enveloping surface is concerned.
- the first inner roll 3 can be replaced by a second inner profiled roll 5 —if the contour of the component in question should necessitate this.
- this second inner roll 5 is shown as a profiled roll, i.e. it is provided with a convex projection 5 a in the case of the embodiment shown.
- this second inner roll 5 is pressed against the inner circumferential surface 4 a of the profiled annular component 4 and moved continuously radially outwards so as to form on said inner circumferential surface 1 a of the profiled annular component 4 an inwardly opening groove 4 c . Since a growth of the ring in the radial direction is no longer possible due to the rolls applied, the material displaced by the second inner roll 5 flows into the free space defined between the groove 4 b and the projection 2 b , until the contour of the groove 4 b corresponds to that of the projection 2 b .
- the first outer roll 2 and the second inner roll 5 enclose a hollow space corresponding to the cross-sectional profile of the synchronizer sleeve produced.
- a plurality of, preferably three outer rolls 2 are in contact with the outer circumferential surface of the profiled annular component 4 , each of said rolls being displaced relative to the next by an angle of 120°.
- the contours of the outer circumferential surfaces of these rolls are preferably identical.
- the outer rolls act continuously on the outer contour of the profiled annular component 4 and prevent a radial growth of the profiled annular component in this way.
- the enveloping surface of the profiled annular component 4 shown in FIG. 2 is therefore identical with that of the synchronizer sleeve 6 shown in FIG. 3.
- a possible axial flow of the material can be limited by guard check plates or by fixed, alternatively also advancable axial rolls.
- these axial rolls can be arranged such that they are distributed between the respective outer rolls 2 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10130679A DE10130679A1 (de) | 2001-06-26 | 2001-06-26 | Verfahren und Vorrichtung zur Herstellung eines rotationssymmetrischen Bauteils |
| DE10130679.2 | 2001-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20030005739A1 true US20030005739A1 (en) | 2003-01-09 |
Family
ID=7689440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/176,080 Abandoned US20030005739A1 (en) | 2001-06-26 | 2002-06-21 | Method and apparatus for producing a rotationally symmetric component |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20030005739A1 (de) |
| EP (1) | EP1270111A1 (de) |
| DE (1) | DE10130679A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005016575A1 (de) * | 2003-08-13 | 2005-02-24 | Technische Universität Dresden | Verfahren zur herstellung von innen- und/oder aussenprofilierten ringen sowie anordnung hierzu |
| US20110061295A1 (en) * | 2009-02-17 | 2011-03-17 | Mcalister Technologies, Llc | Sustainable economic development through integrated production of renewable energy, materials resources, and nutrient regimes |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI415348B (zh) | 2010-10-18 | 2013-11-11 | Leader Electronics Inc | Can replace the different plugs and can change the direction of the plug power conversion device |
| KR101337003B1 (ko) * | 2012-02-13 | 2013-12-04 | 주식회사 평산 | 링 압연 공법을 이용한 풍력 타워용 플랜지 제조방법 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3288542A (en) * | 1964-01-10 | 1966-11-29 | Torrington Co | Method of rolling bearing races |
| US3867751A (en) * | 1972-10-05 | 1975-02-25 | Formflo Ltd | Sintered blanks |
| EP0565406A1 (de) * | 1992-04-06 | 1993-10-13 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Verfahren zur Herstellung eines ringförmigen Körpers |
| DE19849182A1 (de) * | 1998-10-24 | 2000-04-27 | Bad Dueben Profilwalzmaschinen | Verfahren zum Walzen von ringförmigen Werkstücken |
-
2001
- 2001-06-26 DE DE10130679A patent/DE10130679A1/de not_active Withdrawn
-
2002
- 2002-06-14 EP EP02013179A patent/EP1270111A1/de not_active Withdrawn
- 2002-06-21 US US10/176,080 patent/US20030005739A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005016575A1 (de) * | 2003-08-13 | 2005-02-24 | Technische Universität Dresden | Verfahren zur herstellung von innen- und/oder aussenprofilierten ringen sowie anordnung hierzu |
| US20060236545A1 (en) * | 2003-08-13 | 2006-10-26 | Technische Universitat Dresden | Method for producing internally or externally profiled rings and arrangement therefor |
| US8302314B2 (en) | 2003-08-13 | 2012-11-06 | Technische Universität Dresden | Method for producing internally or externally profiled rings and arrangement therefor |
| US20110061295A1 (en) * | 2009-02-17 | 2011-03-17 | Mcalister Technologies, Llc | Sustainable economic development through integrated production of renewable energy, materials resources, and nutrient regimes |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10130679A1 (de) | 2003-01-02 |
| EP1270111A1 (de) | 2003-01-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: JOHANN HAY GMBH & CO. KG AUTOMOBILTECHNIK, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAUF, GERALD;REEL/FRAME:013188/0036 Effective date: 20020725 |
|
| AS | Assignment |
Owner name: HAY-TEC AUTOMOTIVE GMBH & CO. KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOHANN HAY GMBH & CO. KG AUTOMOBILTECHNIK;REEL/FRAME:014174/0743 Effective date: 20030523 |
|
| STCB | Information on status: application discontinuation |
Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION |