JPH0252565B2 - - Google Patents
Info
- Publication number
- JPH0252565B2 JPH0252565B2 JP56185919A JP18591981A JPH0252565B2 JP H0252565 B2 JPH0252565 B2 JP H0252565B2 JP 56185919 A JP56185919 A JP 56185919A JP 18591981 A JP18591981 A JP 18591981A JP H0252565 B2 JPH0252565 B2 JP H0252565B2
- Authority
- JP
- Japan
- Prior art keywords
- roll
- outer shell
- inner shell
- annular outer
- shell portion
- 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 - Lifetime
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/20—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a non-continuous process,(e.g. skew rolling, i.e. planetary cross rolling)
-
- 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
- B21B13/008—Skew rolling stands, e.g. for rolling rounds
Landscapes
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Description
本発明は、プラネタリーミル用複合ロールに係
り、圧延作業における耐摩耗性の向上を図ると共
にロールと回転駆動軸との固着部の強度向上を企
図し、もつて複合ロールの性能の全体的な向上を
目的としたものの提供に関する。
従来、スリーロールプラネタリーミル用のロー
ルは単一材質で鋳造し、鋳造手法、熱処理手法に
より外殻部の耐摩耗性の向上を行つているが、ロ
ール外殻部の耐摩耗性の向上を図れば内殻部の回
転駆動軸との固着部の靭性が欠けることとなり、
逆に固着部の靭性を向上させれば外殻部の耐摩耗
性が劣化するという二律背反の問題点を有してい
た。
本発明はかかる従来の問題点に鑑み、鋭意創成
されたもので、従つてその特徴とするところは、
略円錐台形状のロールであつて、外周面部に圧延
ゾーンとスムーズゾーンとが形成され、中心部に
回転駆動軸への固着部が形成されたプラネタリー
ミル用のロールにおいて、
前記外周部を有する環状外殻部が耐摩耗材質で
形成され、前記固着部を有し環状外殻部で囲繞さ
れる内殻部が強靭材質で形成され、環状外殻部と
内殻部との境界面がロールの縦向軸心回りの回転
放物曲面とされ、かつ回転軸心が縦向の遠心鋳造
により前記外殻部と内殻部とが一体的に鋳造され
てなる点にある。
以下、本発明の実施例を図に従い説明する。
第１図において、スリーロールプラネタリーミ
ル１は、棒状圧延材２の軸心回り周方向等間隔に
配設された三つのロール３を具備し、該ロール３
は回転駆動軸４に着脱自在に固着されて、軸心回
り自転駆動自在とされ、かつ該ロール３は回転駆
動軸４と共に圧延材２の軸心回りに公転駆動自在
とされ、ロール３の上記自転と公転駆動により圧
延材２は軸方向の移動に伴い圧延される。
第２図、第３図において、上記ロール３は、回
転軸心が縦向の遠心鋳造による複合ロールであつ
て、略円錐台形状に形成され、該ロール３の外周
面部には、ロール３の軸心方向径大部方向位置に
軸心に対し傾斜角（α）の比較的小さい円錐台外
周面を有する圧延ゾーン５や形成され、また同径
小部方向位置に同傾斜角（β）の比較的大きい円
錐台外周面を有するスムーズゾーン６が形成さ
れ、これら両ゾーン５，６は軸方向に隣接されて
環状外殻部７が構成される。そして、該外殻部７
は、耐摩耗性材質とされ、例えば下記表の如き化
学組成で示される高合金グレン材で構成される。
The present invention relates to a composite roll for planetary mills, and is intended to improve the wear resistance during rolling operations and to improve the strength of the fixed portion between the roll and the rotational drive shaft, thereby improving the overall performance of the composite roll. Regarding the provision of things for the purpose of improvement. Conventionally, rolls for three-roll planetary mills are cast from a single material, and the wear resistance of the outer shell is improved by casting and heat treatment methods. If this is done, the part where the inner shell is fixed to the rotational drive shaft will lack toughness,
On the contrary, if the toughness of the fixed part is improved, the wear resistance of the outer shell part deteriorates, which is a trade-off problem. The present invention has been devised in view of these conventional problems, and its features are as follows:
A roll for a planetary mill, which is a roll having a substantially truncated conical shape, a rolling zone and a smooth zone are formed on the outer circumferential surface, and a portion for fixing to a rotational drive shaft is formed in the center, having the outer circumferential portion. The annular outer shell part is formed of a wear-resistant material, the inner shell part having the fixed part and surrounded by the annular outer shell part is made of a strong material, and the interface between the annular outer shell part and the inner shell part is formed by a roll. The outer shell portion and the inner shell portion are integrally cast by centrifugal casting with the rotation axis being vertically oriented. Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a three-roll planetary mill 1 includes three rolls 3 arranged at equal intervals in the circumferential direction around the axis of a bar-shaped rolled material 2.
is removably fixed to the rotary drive shaft 4 and can be driven to rotate around the axis, and the roll 3 can be driven to revolve around the axis of the rolled material 2 together with the rotary drive shaft 4. The rolling material 2 is rolled as it moves in the axial direction due to the rotation and revolution drive. In FIGS. 2 and 3, the roll 3 is a composite roll made by centrifugal casting with a vertical rotation axis, and is formed into a substantially truncated conical shape. A rolling zone 5 having a truncated conical outer circumferential surface having a relatively small inclination angle (α) with respect to the axis is formed in the direction of the large diameter part in the axial direction, and a rolling zone 5 with the same inclination angle (β) in the direction of the small diameter part is formed. A smooth zone 6 having a relatively large truncated conical outer circumferential surface is formed, and both zones 5 and 6 are axially adjacent to each other to form an annular outer shell 7. Then, the outer shell portion 7
is a wear-resistant material, and is made of, for example, a high alloy grain material having a chemical composition as shown in the table below.
【表】
上記外殻部７で囲繞される内殻部８は強靭材質
とされ、例えば下記表の如き化学組成で示される
ダクタイルで構成される。[Table] The inner shell portion 8 surrounded by the outer shell portion 7 is made of a strong material, and is composed of, for example, ductile having a chemical composition as shown in the table below.
【表】
そして、内殻部８には回転駆動軸４への固着部
９が形成され、該固着部９は、ロール３の径大部
端面に形成されるフエイスカツプリング部１０
と、ロール３の軸心孔１１内に形成されるクラン
プ部１２とで構成され、クランプ部１２は、軸心
孔１１周面に周方向等間隔で突設されるクランプ
突起で形成されている。
また、上記外殻部７と内殻部８との境界面１３
は、外殻部７の肉厚を略均一とすべく外殻部７外
周面に沿つた曲面、即ち適切なる遠心力に基づく
ロール３の縦向軸心回りの回転放物曲面とされ、
図例では、境界面１３の仮想底面の接線上にロー
ル３の径小部端面３ａが形成されている。この場
合、第２図の一点鎖線で示す如く、境界面１３の
仮想底面と径小部端面３ａとの間に肉厚を持たせ
てもよい。また、外殻部７外周面は同第２図の二
点鎖線で示す如く、その摩耗程度に応じて、耐摩
耗層が均一に残るように改削可能である。
第４図は、本発明の他の実施例を示し、内殻部
７を更に多層とし、全体として三層ロールを含む
多層ロールに形成したもので、各層間の境界面は
夫々回転放物曲面とされている。
第５図は、本発明の更に他の実施例を示し、軸
心孔１１が中子１４により形成されるものであ
る。
上記他の実施例の他の構成は、先の実施例に示
した構成に準ずるものであり、これら各実施例の
各部構成を種々組合せることは自由である。
本発明によれば、プラネタリーミル用ロールを
耐摩耗材質の環状外殻部と強靭材質の内殻部との
複合構造とし、両部を回転軸心が縦向の遠心鋳造
により一体的に鋳造したので、製造が容易で、し
かも圧延ゾーン５とスムーズゾーン６の耐摩耗性
が向上されると共に、強度を必要とする固着部９
が強靭材質とされたことによつて耐久力の向上が
達成され、複合ロール３の性能が全体的に向上さ
れ、よつて優れた発明である。更に、環状外殻部
と内殻部との境界面がロールの縦向軸心回りの回
転放物曲面とされているので、前記外殻部の肉厚
を略均一にすることができ、耐摩耗層が均一に残
るように改削可能となり、環状外殻部を有効に使
用することができる。[Table] A fixing portion 9 to the rotational drive shaft 4 is formed in the inner shell portion 8, and the fixing portion 9 is connected to a face coupling portion 10 formed on the end surface of the large diameter portion of the roll 3.
and a clamp part 12 formed in the axial hole 11 of the roll 3, and the clamp part 12 is formed of clamp protrusions protruding from the circumferential surface of the axial hole 11 at equal intervals in the circumferential direction. . In addition, an interface 13 between the outer shell portion 7 and the inner shell portion 8
is a curved surface along the outer peripheral surface of the outer shell portion 7 in order to make the wall thickness of the outer shell portion 7 substantially uniform, that is, a parabolic curved surface of rotation around the longitudinal axis of the roll 3 based on an appropriate centrifugal force,
In the illustrated example, the small-diameter end surface 3a of the roll 3 is formed on a tangent to the virtual bottom surface of the boundary surface 13. In this case, as shown by the dashed line in FIG. 2, a wall thickness may be provided between the virtual bottom surface of the boundary surface 13 and the small diameter portion end surface 3a. Further, as shown by the two-dot chain line in FIG. 2, the outer circumferential surface of the outer shell portion 7 can be modified so that a wear-resistant layer remains uniformly, depending on the degree of wear. FIG. 4 shows another embodiment of the present invention, in which the inner shell part 7 is further made multi-layered to form a multilayer roll including a three-layer roll as a whole, and the boundary surfaces between each layer are each a paraboloid of revolution. It is said that FIG. 5 shows still another embodiment of the present invention, in which the axial hole 11 is formed by a core 14. The other configurations of the other embodiments described above are similar to the configurations shown in the previous embodiments, and the configurations of each part of each of these embodiments may be combined in various ways. According to the present invention, a roll for a planetary mill has a composite structure of an annular outer shell made of a wear-resistant material and an inner shell made of a tough material, and both parts are integrally cast by centrifugal casting with the rotation axis in a vertical direction. Therefore, manufacturing is easy, the wear resistance of the rolling zone 5 and the smooth zone 6 is improved, and the fixed part 9 which requires strength is improved.
Since the roll is made of a strong material, durability is improved, and the performance of the composite roll 3 is improved overall, making it an excellent invention. Furthermore, since the boundary surface between the annular outer shell and the inner shell is a parabolic curved surface of rotation about the longitudinal axis of the roll, the wall thickness of the outer shell can be made approximately uniform, and the durability is improved. It is possible to modify the wear layer so that it remains uniformly, and the annular outer shell can be used effectively.
図は本発明の実施例を示し、第１図はミルの概
略説明図、第２図は複合ロールの側面部分縦断面
図、第３図は第２図の−線矢視部分図、第４
図は他の実施例を示す複合ロールの縦断面図、第
５図は更に他の実施例を示す複合ロールの縦断面
図である。
１……スリーロールプラネタリーミル、３……
複合ロール、４……回転駆動軸、５……圧延ゾー
ン、６……スムーズゾーン、７……外殻部、８…
…内殻部、９……固着部、１３……境界面。
The drawings show an embodiment of the present invention, in which Fig. 1 is a schematic explanatory view of a mill, Fig. 2 is a longitudinal cross-sectional side view of a composite roll, Fig. 3 is a partial view taken along the - line in Fig. 2, and Fig. 4 is a partial longitudinal sectional view of a composite roll.
The figure is a longitudinal sectional view of a composite roll showing another embodiment, and FIG. 5 is a longitudinal sectional view of a composite roll showing still another embodiment. 1... Three-roll planetary mill, 3...
Composite roll, 4...Rotation drive shaft, 5...Rolling zone, 6...Smooth zone, 7...Outer shell part, 8...
...Inner shell part, 9...Fixed part, 13...Boundary surface.
Claims (1)
圧延ゾーンとスムーズゾーンとが形成され、中心
部に回転駆動軸への固着部が形成されたプラネタ
リーミル用のロールにおいて、 前記外周部を有する環状外殻部が耐摩耗材質で
形成され、前記固着部を有し環状外殻部で囲繞さ
れる内殻部が強靭材質で形成され、環状外殻部と
内殻部との境界面がロールの縦向軸心回りの回転
放物曲面とされ、かつ回転軸心が縦向の遠心鋳造
により前記外殻部と内殻部とが一体的に鋳造され
てなることを特徴とするプラネタリーミル用複合
ロール。[Scope of Claims] 1. A roll for a planetary mill, which is a substantially truncated cone-shaped roll, in which a rolling zone and a smooth zone are formed on the outer peripheral surface, and a portion fixed to a rotational drive shaft is formed in the center. In the above, the annular outer shell having the outer peripheral portion is formed of a wear-resistant material, the inner shell having the fixing portion and surrounded by the annular outer shell is made of a strong material, and the annular outer shell and the inner shell are made of a strong material. The outer shell portion and the inner shell portion are integrally cast by centrifugal casting with the rotational axis being vertically oriented, and the boundary surface between the outer shell portion and the inner shell portion is a parabolic curved surface of rotation about the longitudinal axis of the roll. Composite roll for planetary mills featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18591981A JPS5886914A (en) | 1981-11-18 | 1981-11-18 | Composite roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18591981A JPS5886914A (en) | 1981-11-18 | 1981-11-18 | Composite roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5886914A JPS5886914A (en) | 1983-05-24 |
| JPH0252565B2 true JPH0252565B2 (en) | 1990-11-14 |
Family
ID=16179166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18591981A Granted JPS5886914A (en) | 1981-11-18 | 1981-11-18 | Composite roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5886914A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2551995A1 (en) * | 1983-09-21 | 1985-03-22 | Eschweiler Bergwerksverein | Planetary rolling mill with slant (skew) rolls |
| CN102553929A (en) * | 2011-12-20 | 2012-07-11 | 苏州东君橡胶机械厂 | Roller taking dug iron as base material and manufacturing technology thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2910445A1 (en) * | 1979-03-16 | 1980-09-18 | Schloemann Siemag Ag | Planetary skew rolling mill for mfg. tube from hollow ingots - where ingot is driven over stationary conical mandrel so tube has larger external dia than ingot |
| JPS55158873A (en) * | 1979-05-28 | 1980-12-10 | Kubota Ltd | Production of high alloy cast iron roll |
-
1981
- 1981-11-18 JP JP18591981A patent/JPS5886914A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5886914A (en) | 1983-05-24 |
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