EP3523062A1 - Walzringanordnung mit einem walzring und einer walzenwelle - Google Patents
Walzringanordnung mit einem walzring und einer walzenwelleInfo
- Publication number
- EP3523062A1 EP3523062A1 EP17781099.1A EP17781099A EP3523062A1 EP 3523062 A1 EP3523062 A1 EP 3523062A1 EP 17781099 A EP17781099 A EP 17781099A EP 3523062 A1 EP3523062 A1 EP 3523062A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling ring
- ring
- roll
- clamping element
- clamping
- 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
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/03—Sleeved rolls
- B21B27/035—Rolls for bars, rods, rounds, tubes, wire or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/005—Cantilevered roll stands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
- B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
- B21B13/103—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for rolling bars, rods or wire
Definitions
- Rolling ring arrangement with a rolling and a roll shaft
- the invention relates to a rolling ring assembly with a rolling ring and a roll shaft on which the rolling ring is rotatably mounted and which has a threaded portion, which is seen to the free end of the roll shaft axially adjacent to the rolling ring, wherein a screwed onto the threaded portion nut an axial stress on the rolling ring exercises.
- a rolling ring assembly is known in which a rolling ring is clamped using a tapered sleeve on the roll shaft and fixed substantially by radial tension.
- the radial stress is chosen to be sufficiently high for the transmission of a torque required for a rolling operation between the roll shaft and rolling ring.
- Such rolling ring arrangements of the rolling ring is relatively heavily stressed to train.
- modern rolling rings hold high pressure forces, but are not very tensile, this applies z. B. made of hard metal rolling rings.
- the conical sleeve is inserted by means of a hydraulic clamping tool with a high pressure between the shaft journal and the rolling ring. This creates a positive connection. Due to the high biasing force on the conical sleeve considerable tensile stresses arise in the rolling ring. These tensile stresses can lead to the bursting of the rolling rings and promote the formation of cracks in the base of the caliber. The cracking leads to a more frequent reworking of the rolling rings and thus to an increased replacement of the rolling rings. These increased rework cycles and the shutdown of the entire system during the rolling ring change, cause additional production costs. To keep the tensile stresses and cracking low, wider rolling rings are used, thereby increasing the cost of the tool.
- Another solution therefore provides an axial clamping of the rolling rings, as known from DE 103 02 660 B4.
- the necessary for a clamping operation, high axial working tension of this rolling ring assembly is applied by a nut screwed onto the threaded portion and / or by a hydraulically operating, axial clamping device.
- the nut can be rotated independently of the hydraulic tensioner and the hydraulic tensioner can be used independently of the nut.
- the hydraulic tensioning device is intended to perform the tensioning operation and also the release operation.
- the nut is designed to maintain the working tension achieved hydraulically. This makes it possible to remove the hydraulic tensioning device from the shaft as soon as the axial working tension is transmitted through the nut. However, this is always an additional hydraulic tensioning device for axial clamping of the rolling ring necessary.
- a rolling ring arrangement is known from the operational practice, in which the axial working tension is applied to the rolling ring by means of a tie rod which is screwed into the roll shaft, whereby the roll shaft is considerably weakened in cross section.
- a tie rod which is screwed into the roll shaft, whereby the roll shaft is considerably weakened in cross section.
- These punctures result as a result of cooling at the beginning of the rod and exert on the rolling ring in addition to a moment force.
- This torque is transmitted to the tie rod via a clamping nut, which acts on the roll ring and is arranged on the roll shaft, which can lead to overstressing of the tie rod.
- This additional load causes the tie rod to break. The consequence of this is the reworking of the roller shaft or the reject.
- the invention is therefore an object of the invention to provide a generic rolling ring without the disadvantages mentioned above, in which the rolling ring can also be axially clamped without the use of an additional hydraulic tensioning device on the roll shaft rotation.
- This object is achieved by a arranged between the rolling ring and the threaded portion, sleeve-like clamping element which is formed with a threaded portion facing the front collar and a rear collar, wherein on the one hand, the rear collar rests against the rolling ring with frictional engagement and on the other hand in the Center section between the two collar trained toothed shaft profile of the clamping element is positively arranged on a toothed shaft profile of the roller shaft, wherein the sleeve-like clamping element can be acted upon by the screwed onto the threaded portion clamping nut against the rolling ring.
- the clamping element is formed in its middle part with an inside toothed shaft profile and the roller shaft with an outside toothed shaft profile.
- a positive and self-centering connection between the roller shaft and the clamping element is achieved, wherein the connection preferably corresponds to a polygonal profile, so that a total of a roller shaft clamping element connection can be achieved for high torques.
- the roll shaft experiences no weakening in its core, and the reduced tensile stresses can roll rings of ceramic materials and be used in a narrower design.
- the positive connection between the clamping element and the roller shaft allows the resulting rolling collisions are recorded in the rolling operation by the positive connection.
- the inventive combination of frictional engagement between the clamping element and the rolling ring and from Positive locking between the clamping element and the roller shaft is used for the transmission of high rolling torque.
- the invention provides that the clamping nut for clamping force transmission in the sleeve-like clamping element concentrically arranged on the roll shaft in a receiving portion arranged in the front collar an intermediate ring and in a limited by the intermediate ring and the middle portion of the clamping element radial and axial clearance of the receiving portion a spring means preferably consisting of at least two disc springs, are assigned.
- the preload force required for the tensioning system is introduced in a structurally simple and cost-effective manner by the spring means and, on the other hand, the load introduced by the spring means via the tensioning nut and the intermediate ring is transmitted to the tensioning element.
- a further embodiment of the invention provides that between the rolling ring and the roller shaft, a conical sleeve or the like fitting and sliding spring means is arranged, which is acted upon axially by a relation to the rear collar recessed end face of the clamping element.
- the conical sleeve is optionally inserted simultaneously with the axial pressurization of the rolling ring through the intermediate ring, the plate springs and the clamping element with a moderate pressure between the roller shaft and the rolling ring, whereby the frictional connection between the clamping element and rolling ring supported by a frictional connection between rolling ring and roller shaft can be.
- a positive connection between the clamping element and the rolling ring is obtained by introducing a friction layer on the contact surface.
- the coefficient of friction of this friction layer is preferably set between 0.9 and 1.0, particularly preferably at 1.0. This makes it possible, the necessary torque via the interface between the To transfer clamping element and the Walznng of the roller shaft on the rolling ring and thereby also to allow that the conical sleeve only a centering function, but not a function for transmitting torque, retains.
- the conical sleeve can be designed to be lighter overall, for example using a light metallic or non-metallic material such as aluminum or plastic, which advantageously reduces the weight in the high-speed roller shafts in question and the balancing quality can be improved.
- axial strain and the use of rolling rings made of hard metal or ceramic can be realized. These were previously not usable due to their tensile and compressive stress sensitivity in such applications.
- FIG. 1 is an axial sectional view of a rolling ring assembly comprising a roller shaft, a rolling ring, a tensioning element, spring means, an intermediate ring and a clamping nut;
- Fig. 2 as a detail of the roller shaft in a perspective view
- Fig. 4 is an axial sectional view of a rolling ring assembly similar to
- Embodiment according to FIG. 1 1 shows a rolling ring arrangement with a rolling ring 1, which has grooves in the embodiment shown here. He is for the production of long material, z. As bar or wire designed.
- the arrangement further has a roller shaft 2, which has a collar in the right region, on which the rolling ring 2 is supported with the interposition of sealing sliding rings 3.
- the roller shaft 2 has seen from the slip rings 3 and the left, free end, first a conical shaft portion 4 for the rolling ring 1, a toothed shaft profile 5 having centering 6 for a in its central part for positive connection a complementary toothed shaft profile 7 exhibiting clamping element. 8 , an adjoining receiving portion 9 for an intermediate ring 10 and a subsequent threaded portion 1 1, which is in engagement with the thread of a clamping nut 12.
- the clamping element 8 is sleeve-like, wherein an enlarged diameter front collar 13 concentrically surrounds the roller shaft 2 arranged intermediate ring 10. In one of the intermediate ring 10 and the central portion of the clamping element 8 limited radial and axial clearance 14 of the receiving portion 9 two disc springs 15 are arranged.
- the clamping element 8 is formed with a rear collar 17, wherein the collar 17 under cross on the conical shaft portion 4 of the roller shaft 2, a conical sleeve 18 is arranged, of a relative to the end face of the rear collar 17 recessed end face 19 of the clamping element 8 can be acted upon and engages in a radial gap 20 between the rolling ring 1 and roller shaft 2.
- a conical sleeve 18 is arranged, of a relative to the end face of the rear collar 17 recessed end face 19 of the clamping element 8 can be acted upon and engages in a radial gap 20 between the rolling ring 1 and roller shaft 2.
- the threaded portion 1 1 is protected with the clamping nut 12 by a protective cap 21 against the ingress of dirt and debris.
- the entire rolling ring assembly is freely accessible from the front for assembly purposes and allows shorter changeover times in a rolling ring change.
- Figure 4 shows an axial sectional view of a rolling ring arrangement similar to the rolling ring arrangement shown in Figure 1, wherein the difference between the embodiment of Figure 1 and the embodiment of Figure 4 is essentially that at the contact surface between the rear collar 17 of the clamping element 8 and Rolling ring 1 a friction layer 22, preferably with a coefficient of friction ⁇ 0 of about 1, 0, is attached, via which the necessary torque can be transmitted almost positively via the interface between the rolling ring 1, the clamping element 8 and the roller shaft 2.
- a friction layer 22 preferably with a coefficient of friction ⁇ 0 of about 1, 0, is attached, via which the necessary torque can be transmitted almost positively via the interface between the rolling ring 1, the clamping element 8 and the roller shaft 2.
- the conical sleeve 18 is made in the embodiment shown of a non-metallic material, such as a plastic.
- the sliding of the unit of the clamping element 8, comprising the plate spring 15 and the intermediate ring 10, is relaxed against the pre-centered by the conical sleeve 18 rolling ring. 1
- the bias is then carried out with a commercial hydraulic clamping tool on the necessary contact force between the clamping element 8 and the rolling ring. 1
- the force transmission surface is thereby at a maximum possible average diameter between the inner and outer diameter of the rolling ring. 1
Landscapes
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016219468.2A DE102016219468A1 (de) | 2016-10-07 | 2016-10-07 | Walzringanordnung mit einem Walzring und einer Walzenwelle |
| PCT/EP2017/075604 WO2018065617A1 (de) | 2016-10-07 | 2017-10-09 | Walzringanordnung mit einem walzring und einer walzenwelle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3523062A1 true EP3523062A1 (de) | 2019-08-14 |
| EP3523062B1 EP3523062B1 (de) | 2020-08-26 |
Family
ID=60043200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17781099.1A Active EP3523062B1 (de) | 2016-10-07 | 2017-10-09 | Walzringanordnung mit einem walzring und einer walzenwelle |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3523062B1 (de) |
| DE (1) | DE102016219468A1 (de) |
| WO (1) | WO2018065617A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228945B (zh) * | 2022-07-26 | 2025-02-25 | 浙江朋诚科技有限公司 | 一种夹送辊辊环固定结构及其实现方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD158311A3 (de) * | 1981-01-15 | 1983-01-12 | Peter Kletzin | Vorrichtung zum befestigen von walzscheiben |
| DE3316289A1 (de) | 1983-05-04 | 1984-11-08 | Uwe 2104 Hamburg Kark | Verbundwalze mit einem mittels einer konushuelse auf dem walzenkern gehaltenen walzenring |
| JPS632509A (ja) * | 1986-06-19 | 1988-01-07 | Mitsubishi Metal Corp | 圧延ロ−ル |
| DE4041957A1 (de) * | 1990-12-24 | 1992-06-25 | Thaelmann Schwermaschbau Veb | Vorrichtung zum festspannen von walzringen |
| AT399301B (de) * | 1992-08-20 | 1995-04-25 | Voest Alpine Ind Anlagen | Vorrichtung zum befestigen eines walzringes einer walzenwelle |
| DE10302660B4 (de) | 2002-04-24 | 2011-04-07 | Köllges, Ralf | Vorrichtung und Verfahren zum Spannen eines Walzrings auf einer Welle eines Walzgerüstes |
| CA2429264A1 (en) * | 2002-07-01 | 2004-01-01 | Michael J. Eldredge | Rolling mill roll assembly |
| ITTV20130084A1 (it) * | 2013-05-30 | 2014-12-01 | Pert S R L Con Unico Socio | Rullo per la laminazione a caldo di vergelle ed affini e macchina per la laminazione a caldo di vergelle ed affini provvista di tale rullo |
-
2016
- 2016-10-07 DE DE102016219468.2A patent/DE102016219468A1/de not_active Withdrawn
-
2017
- 2017-10-09 EP EP17781099.1A patent/EP3523062B1/de active Active
- 2017-10-09 WO PCT/EP2017/075604 patent/WO2018065617A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP3523062B1 (de) | 2020-08-26 |
| DE102016219468A1 (de) | 2018-04-12 |
| WO2018065617A1 (de) | 2018-04-12 |
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