EP0034806B1 - Machine à laminer des anneaux - Google Patents
Machine à laminer des anneaux Download PDFInfo
- Publication number
- EP0034806B1 EP0034806B1 EP81101175A EP81101175A EP0034806B1 EP 0034806 B1 EP0034806 B1 EP 0034806B1 EP 81101175 A EP81101175 A EP 81101175A EP 81101175 A EP81101175 A EP 81101175A EP 0034806 B1 EP0034806 B1 EP 0034806B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vertical
- roll
- rolls
- shaped
- axial
- 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.)
- Expired
Links
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B2035/005—Hydraulic drive motors
Definitions
- the invention relates to a ring rolling mill for the manufacture of disk-like rings with an integrally formed sleeve-shaped extension, in particular so-called welding neck flanges for connecting pipes.
- the invention is therefore based on the prior art given by DE-A-2 504 969.
- the outer diameter of the blank increases until it is centered on the inner diameter of the ring-shaped template.
- the inside diameter of the blank decreases.
- the material displaced in this direction has previously been bent or squeezed down by a central mandrel to the desired sleeve-shaped extension.
- the invention has for its object to further develop a ring rolling mill of the type described in such a way that the material displaced inward during face rolling by means of the tapered axial roll or rolls is shaped into a sleeve-shaped extension while maintaining the fiber course by a rolling process.
- the invention provides that the vertical roller is conical in connection with a cylindrical part.
- a vertical roller which is expediently designed as a non-driven trailing roller, can be adjusted from the inside via the horizontal adjustability of its bearing housing against the inside diameter of the blank which grows inward during face rolling, whereby due to its relatively small diameter it creates a real rolling effect, because the acceptance of a rolling stock is known the easier it is to accomplish, the smaller the curvature of the roll surface compared to the curvature of the rolling stock, which is infinitely large when rolling bars and sheets.
- This rolling of the inwardly displaced material has the result that the material is redirected into the sleeve-shaped extension with regular bending of the fibers.
- tapered axial roller or rollers extends within the finished dimension of the inside diameter of the product to be manufactured, there is a sharp-edged transition between the flange and the extension, which is filled with material, compared to a cylindrical part of a vertical roller.
- the press-like machine frame comprises two columns 1, 2, which are connected to one another by an upper cross member 3 and a lower cross member 4.
- a pillar 5 is guided by the columns 1, 2 and its height can be adjusted by means of the hydraulic cylinders 6, 7 fixed to the upper cross member 3.
- a rotary table 8 is arranged on the lower cross member 4, on which an annular template 9 can be clamped.
- Four pinions 10, each with a hydraulic motor unit 11, 12 serve to drive the turntable 4.
- two slides 14, 15 are guided horizontally adjustable in guides 16, 17.
- the slides each carry a bearing housing 18, 19 for tapered axial rollers 20, 21, the respective lower surface line of which is parallel to the plane of the turntable 8, i. H. normally runs horizontally, and their axial direction in the projection of FIG. 2 obliquely, d. H. not radial, runs.
- the two tapered axial rollers 20, 21 are arranged approximately diametrically to one another.
- the carriages 14, 15 also carry bearing housings 22, 23 for vertically supported vertical rollers 24, 25, each of which has its own cylinder 26, 27 are adjustable in height.
- a hydraulic cylinder 28 is provided, which is carried by the spar 5 in a manner not shown.
- horizontal hydraulic cylinder is also available for the carriage 15.
- Each of the horizontal cylinders is to be operated independently, as are the cylinders 26, 27 for the height adjustment of the vertical rollers, but a partially overlapping movement play of the slide and the vertical rollers can be set via a programmed control.
- the vertical rollers 24, 25 are also arranged approximately diametrically, but lagging angularly offset in the direction of rotation A of the rotary table 8 with respect to the closest axial roller.
- the vertical rolls thus process a blank inserted into the template 9 from the inside after and while the upper end face of the blank is processed by a shortly before arranged axial roll in the sense of a decrease in thickness.
- Fig. 2 also shows that the tapered axial rollers 20, 21 extend within a dot-dash circle 30 which represents the inside diameter D of the finished product.
- the spar 5 is steered downwards by means of the cylinders 6, 7 until the tapered axial rollers 20, 21 start on the upper end face of the blank ring disk and are taken along as drag rollers.
- the axial rollers 20, 21 roll the blank in its thickness, as a result of which material flows outwards and the circumferential play (not shown) relative to the template 9 disappears.
- the blank is centered in the template. Material also flows inwards through this face rolling.
- the vertical roller 24, which has a conical tip 24a following a cylindrical part is lowered by means of the cylinder 26 into the height position shown.
- the inwardly displaced material in the intermediate cross section 32 flows obliquely inwards in an extension 32a due to the cone tip 24a. Accordingly, the fibers are slightly bent inside the blank.
- the transition 32b of the intermediate profile is filled with sharp edges.
- the vertical roller 24 is controlled further downward if its cylindrical region is set to the finished dimension D of the inner diameter by means of the displacement cylinder 28. In practice, this means that the ring rolling mill has only one vertical roller 24 with a conical tip 24a and only one upstream axial roller 20.
- both vertical rollers are adjusted to the finished dimension D of the inside diameter (circle 30 in FIG. 2) with regard to their horizontal adjustability, the vertical roller 24 being continuously adjusted downwards with the cone tip.
- the progressive change in the intermediate cross-section 32 with respect to the formation of the inward extension 32a is then rolled by the vertical roller 25 after a rotation of 180 °.
- these processes can also be accompanied by horizontal positioning of one or the other vertical roller if these were not initially set to the inside diameter D.
- the conical axial rollers 20, 21 are used to flat-face until the axial rollers run up against the front edge of the template 9 and the desired thickness of the flanges is thus achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81101175T ATE5054T1 (de) | 1980-02-20 | 1981-02-19 | Ringwalzwerk. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803006294 DE3006294A1 (de) | 1980-02-20 | 1980-02-20 | Ringwalzwerk |
DE3006294 | 1980-02-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0034806A1 EP0034806A1 (fr) | 1981-09-02 |
EP0034806B1 true EP0034806B1 (fr) | 1983-10-19 |
Family
ID=6095063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81101175A Expired EP0034806B1 (fr) | 1980-02-20 | 1981-02-19 | Machine à laminer des anneaux |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0034806B1 (fr) |
AT (1) | ATE5054T1 (fr) |
DE (1) | DE3006294A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1242945B (it) * | 1990-12-12 | 1994-05-18 | Bompani Ivaldo Mta | Procedimento e mezzi per realizzare un mozzo in un disco di lamiera o simile |
DE19810851B4 (de) * | 1998-03-13 | 2006-07-27 | Brück, Bruno Jakob | Verfahren und Vorrichtung zum Walzen von Ringen |
CN105666134A (zh) * | 2016-04-13 | 2016-06-15 | 张雪燕 | 一种注射器组装机滑移控制头 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE658592C (de) * | 1936-03-11 | 1938-04-06 | Ferndorf Eisen Metall | Verfahren zur Herstellung von Ringen, insbesondere von grossen Flanschringen |
FR2183988A1 (fr) * | 1972-05-09 | 1973-12-21 | Rheinstahl Ag | |
DE2504969A1 (de) * | 1975-02-06 | 1976-08-19 | Horst Schenk | Verfahren und vorrichtung zum walzen von ringfoermigen werkstuecken |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE43328C (de) * | 1887-06-01 | 1888-05-19 | J. MUN-TON in Maywood, Illinois, V. St. A | Radkranzwalzwerk |
US1781140A (en) * | 1923-12-10 | 1930-11-11 | Taylor James Hall | Universal ring-rolling machine |
US2132370A (en) * | 1938-02-25 | 1938-10-04 | Henry M Hubbard | Metal rolling apparatus and method for annular work |
DE811832C (de) * | 1950-02-25 | 1951-08-23 | Adolf Kreuser G M B H | Einrichtung zur Druckuebertragung in einem Scheiben-Radial-Walzwerk |
FR2040631A5 (en) * | 1969-04-08 | 1971-01-22 | Cordonnier Jean | Rolling mill for rolling circular products |
DD142853A1 (de) * | 1979-04-16 | 1980-07-16 | Wenke Karl Heinz | Verfahren zur herstellung von geschweissten profilierten ringen |
-
1980
- 1980-02-20 DE DE19803006294 patent/DE3006294A1/de active Granted
-
1981
- 1981-02-19 EP EP81101175A patent/EP0034806B1/fr not_active Expired
- 1981-02-19 AT AT81101175T patent/ATE5054T1/de not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE658592C (de) * | 1936-03-11 | 1938-04-06 | Ferndorf Eisen Metall | Verfahren zur Herstellung von Ringen, insbesondere von grossen Flanschringen |
FR2183988A1 (fr) * | 1972-05-09 | 1973-12-21 | Rheinstahl Ag | |
DE2504969A1 (de) * | 1975-02-06 | 1976-08-19 | Horst Schenk | Verfahren und vorrichtung zum walzen von ringfoermigen werkstuecken |
Also Published As
Publication number | Publication date |
---|---|
ATE5054T1 (de) | 1983-11-15 |
EP0034806A1 (fr) | 1981-09-02 |
DE3006294C2 (fr) | 1989-10-12 |
DE3006294A1 (de) | 1981-10-01 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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