WO1999011397A1 - Laminoir a regulation bidimensionnelle de la deviation des cylindres - Google Patents

Laminoir a regulation bidimensionnelle de la deviation des cylindres Download PDF

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Publication number
WO1999011397A1
WO1999011397A1 PCT/CN1997/000091 CN9700091W WO9911397A1 WO 1999011397 A1 WO1999011397 A1 WO 1999011397A1 CN 9700091 W CN9700091 W CN 9700091W WO 9911397 A1 WO9911397 A1 WO 9911397A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
rolling mill
stand
mill according
rolling
Prior art date
Application number
PCT/CN1997/000091
Other languages
English (en)
French (fr)
Inventor
Hongzhuan Zheng
Linzhen Zhao
Original Assignee
Hongzhuan Zheng
Linzhen Zhao
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hongzhuan Zheng, Linzhen Zhao filed Critical Hongzhuan Zheng
Priority to UA2000031424A priority Critical patent/UA66804C2/uk
Priority to US09/486,575 priority patent/US6260397B1/en
Priority to EP97938743A priority patent/EP1020238A4/en
Priority to AU41102/97A priority patent/AU750382B2/en
Priority to CA002302378A priority patent/CA2302378C/en
Priority to KR10-2000-7002236A priority patent/KR100504355B1/ko
Priority to PCT/CN1997/000091 priority patent/WO1999011397A1/zh
Priority to BR9714857A priority patent/BR9714857A/pt
Priority to TR2000/00606T priority patent/TR200000606T2/xx
Priority to RU2000107826/02A priority patent/RU2198749C2/ru
Priority to JP2000508485A priority patent/JP2001514077A/ja
Priority to DE29780451U priority patent/DE29780451U1/de
Priority to NZ503138A priority patent/NZ503138A/xx
Priority to CZ20000763A priority patent/CZ298658B6/cs
Publication of WO1999011397A1 publication Critical patent/WO1999011397A1/zh

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Classifications

    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls

Definitions

  • the present invention generally relates to a rolling mill for producing plate and strip, and particularly relates to a rolling mill with two-dimensional control of roll deflection, so that the rolled plate and strip have high lateral thickness accuracy.
  • rolling mills for rolling plate and strip.
  • the currently used mills include four-roller mills, HC mills, and multi-roller mills.
  • the main disadvantage is that when the rolled part passes the stand, the rolling device is located at the roll neck of the roll, so the roll has a large bending deformation. Deformation will inevitably cause deviations in the transverse thickness of the rolled product (rolled sheet and strip), which will seriously affect the quality of the rolled product.
  • the multi-roller mill includes an integral torii type and an open type (as shown in Figures 1 and 2).
  • Japanese Patent Laid-Open No. 54-1259 discloses a multi-roller mill which uses a tower roll system.
  • these All kinds of rolling mills have advantages such as high rigidity, but the parts where the stand and the support rolls in the multi-roll rolling mill are in contact with each other still produce flexural deformation under the action of the rolling force, so the flexural deformation of the work roll is affected, which will affect it. Uniformity of thickness of rolled parts.
  • the invention supports the outer support rolls of the tower roll system in the form of a multi-segment beam on the roll base, and the rolling force acting on the work roll is distributed to the upper and lower roll bases through the roll system.
  • the vertical component force on the roller seat is transmitted to the frame through the pressing or pushing device or pad and the like.
  • the number of the pressing or pushing device is at least two.
  • the position of the pressing or pushing device is at Near the middle of the work roll axis on the roll holder. It can be seen that the embodiment of the patent can make the roll holder flex and deform on the vertical plane, and substantially does not follow the rolling The change of the braking force can effectively reduce the thickness error on the cross section of the rolled part.
  • the present invention is to solve the problem of two-dimensional deflection of the roll, that is, the rolling mill of the present invention can reduce not only the deflection in the vertical direction but also the deflection in the horizontal direction. Therefore, the object of the present invention is to provide a high-precision rolling mill. After the rolling mill is subjected to rolling force, compared with the prior art, the deflection of the roll is greatly reduced, so the thickness of the cross-section of the rolled part is reduced. The error improves the dimensional accuracy of the rolled part.
  • a rolling mill for rolling plate and strip is composed of a frame, an upper and lower roll system, and an upper and lower roll base.
  • the frame is made into a frame shape, which can withstand rolling. Holding force, and all the etiquette components such as the roller system can be installed in it.
  • the roller system is arranged into a tower structure. It consists of three parts: work roll, support roller and intermediate roller. It is placed on the outer layer of the roller system.
  • the lower support roller is supported on the upper and lower roll holders in a multi-segment beam manner, and the upper roll holders can be moved up and down as needed to adjust the roll gap size.
  • the rolling mill is characterized in that the stand of the ceremonial machine, the roll stand, and the intermediate support device between the stand and the roll stand together form a two-dimensional support system.
  • the intermediate support device is arranged on at least one of the upper and lower roll stands, and is arranged near the middle of the axis of the work roll body, and its length does not exceed the length of the work roll body.
  • the intermediate support device includes a pressing device and a horizontal pad. At least two pressing devices are arranged above the upper roll holder and placed in a frame. The lower roll holder is supported by the horizontal pad, the pressing device and the horizontal pad.
  • the blocks are arranged near the middle of the axis of the work roll body on the roll base.
  • the invention also provides horizontal up and down vertical pad groups, which are respectively arranged between the two side walls of the upper and lower roll bases, and are supported on On the side wall of the frame, the upper and lower vertical pad groups are respectively formed by two wedges. To prevent deflection due to the horizontal component force.
  • the shape of the mill stand matches the shape of the roll stand.
  • Figure 1 is a schematic diagram of a Senzimir rolling mill in the prior art
  • FIG. 2 is a schematic view of an open-type multi-roll mill in the prior art
  • FIG. 3 is a schematic diagram of a multi-roll rolling mill disclosed in Japanese Patent in the prior art
  • FIG. 4 is a schematic front sectional view of a first embodiment of a rolling mill according to the present invention.
  • FIG. 5 is a cross-sectional view of the first embodiment of the present invention, taken along A-A in FIG. 4;
  • FIG. 6 is a cross-sectional view of the first embodiment of the present invention, taken along line B-B in FIG. 4;
  • FIG. 7 is a cross-sectional view of the first embodiment of the present invention, taken along line C-C in FIG. 4;
  • FIG. 8 is a schematic front sectional view of a second embodiment of the rolling mill of the present invention.
  • FIG. 9 is a cross-sectional view of the second embodiment of the present invention, taken along line D-D in FIG. 8;
  • FIG. 10 is a schematic front sectional view of a third embodiment of the present invention.
  • Fig. 11 is a sectional view taken along line E-E of the third embodiment shown in Fig. 10. The best way to implement the invention
  • Figure 1-3 is a schematic diagram of the current conventional rolling mill. Due to the limitation of the structure, the rolling deformation inevitably appears on the roll during the rolling process, which directly affects the quality of the rolled parts, thereby making the rolled workpiece surface accuracy. It is mainly the precision of the thickness of the plate that cannot meet the requirements.
  • the two-dimensional support system includes a frame 10, roll stands 4, 5, and both Intermediate support device.
  • the contents of the frame 10 are equipped with main components such as upper and lower roll systems, upper and lower roll stands 4, 5 and the like.
  • the frame 10 can be made into an integral shape, or it can be composed of several parts spliced by welding or other connection methods.
  • the upper and lower roll systems are composed of work roll 1, intermediate roll 2 and support roll 3, which together form a tower roll system.
  • the rolled product is designated by reference numeral 12.
  • the outermost support roller 3 of the roll system is supported in the form of a multi-segment beam on the upper and lower roll holders 4 and 5, generally more than a two-segment beam (see Figure 5).
  • a reduction device 6 is installed between the upper roll holder 4 and the inner upper wall of the frame 10, which is located on the roll holder and near the middle of the axis of the work roll body, generally located within the length of the work roll body.
  • the pressing device 6 moves up and down, so that the upper roll holder 4 can be moved up and down in the overall frame 10 in order to adjust the gap between the rolls. Gap.
  • the pressing device can also be equipped with an automatic plate thickness control mechanism (not shown in the figure), so that the rolling pressure and the size of the roll gap can be accurately detected for automatic control. Therefore, it can also achieve high precision products while rolling. Production automation.
  • a horizontal pad 7 (Fig. 4) is provided between the lower roll holder 5 and the inner lower wall of the frame 10, which is located near the middle of the axis of the work roll body under the roll holder, usually within the length of the work roll body. That is to say, the lower roll stand 5 is supported by the horizontal pad 7.
  • the horizontal pad 7 can adopt different sizes and specifications, that is, its thickness can form a series. The adjustment of the rolling line is achieved by horizontal pads 7 of different specifications and thicknesses, and hydraulic devices or screw devices can also be used instead of the pads 7.
  • the upper roll holder 4 is supported by the pressing device 6 in the vertical direction and is supported by two pairs of upper vertical block groups 8 and 8 in the horizontal direction.
  • the vertical block groups 8 and 8 are arranged between the inner wall of the frame 10 and the upper roll holder 4, which are respectively placed on the left and right sides of the upper roll holder 4, and are located near the middle of the axis of the work roll body. Within body length.
  • the upper vertical block group 8 is composed of two matched wedge-shaped members (see FIG. 6) with opposite inclined directions.
  • the lower roll holder 5 is not only supported by the horizontal pad 7 in the vertical direction, but also supported by the lower vertical pad groups 9 and 9 in the horizontal direction.
  • the lower vertical pad groups 9 and 9 are distributed on the inner side wall and the lower side of the frame 10. Between the roll stands 5, they are respectively located on the left and right sides of the lower roll stand 5, and are located near the middle of the axis of the work roll body, within the range of the length of the roll body.
  • the lower vertical block group 9 is also made of wedges (see Figure 7).
  • the above-mentioned lower roll stand 5 is supported on the frame 10 together with the horizontal pad 7 and the lower vertical pad group 9.
  • the above upper roll stand 4 is supported on the frame 10 together with the upper vertical pad group 8 and the pressing device 6.
  • the deflection of the roll is significantly reduced.
  • the stand, the roll stand, and the intermediate support device between the stand and the roll stand together form a two-dimensional support.
  • the system is supported simultaneously in both vertical and horizontal directions.
  • the upper and lower roll stands of the ceremonial machine, as well as the support rollers, intermediate rollers, and work rollers are supported in the horizontal and vertical directions.
  • the rolling force carried by the work roll is transmitted to the support roll via the work roll and the intermediate roll.
  • the support roll is composed of several backing bearings installed on the mandrel (see Figure 5). Therefore, the rolling force is transmitted to the outside of the bearing.
  • the outer ring is rotating, and then transmitted to the upper roller base through the bearing.
  • the vertical component force reaches the upper inner wall of the frame through the reduction device, and the horizontal component force reaches the side wall of the frame through the vertical pad group.
  • the rolling force received by the lower work roll is transmitted to the lower roll base through the intermediate roll and the support roll, the vertical component force is transmitted to the lower inner wall of the frame through the horizontal pad 7 and the horizontal component force reaches the frame through the vertical pad group 9 Sidewall.
  • the horizontal pad and the vertical pad group are located near the middle of the axis of the work roll body, within the length of the roll body.
  • the rolling mill of the present invention ensures work rolls not only on the vertical plane but also on the horizontal plane.
  • the correct shape of the bus bar that is, the straightness of the bus bar, so that the bending deformation of the work roll basically does not change with the change of the rolling force, so that its bending deformation is greatly reduced, and the final effect is to make the rolled part
  • the thickness error of the plate and strip is reduced.
  • the roll gap is adjusted by the action of the pressing device 6 by moving the upper roll holder 4 up and down in the window of the frame 10.
  • the rolling mill can also be completely inverted, that is, the pressing device becomes a pushing device, which has the same effect.
  • the hydraulic pressing device of this embodiment may be replaced by a screw pestle mechanism or the like.
  • FIGS 8-9 show a second embodiment of the present invention.
  • the rolling mill also includes a two-dimensional support system consisting of a stand, a roll stand, and an intermediate support device therebetween.
  • the specific components are a frame 10, an upper roll holder 24, a lower roll holder 25, a pad 21, and a roll system.
  • the roll system includes a work roll 1, an intermediate roll 2, a support roll 3, and the roll of the first embodiment.
  • the system is the same, and they all form a tower roller system.
  • the outer support rollers 3 are also supported on the roller seats 24 and 25 in the form of multi-section beams.
  • the difference between the second embodiment and the first embodiment is that an intermediate support device is provided.
  • the pressing devices 26 and 27 are used to replace the pressing device 6 and the upper vertical pad group 8 in the first embodiment, and a lower pad 21 is provided instead of the horizontal pad 7 and the lower vertical pad group 9. This will be described in detail below.
  • the lower roll holder 25 is supported on the stand 10 by two pads 21, and the two pads 21 are arranged obliquely between the stand 10 and the lower roll stand 25.
  • the upper and lower roll stands The outer side walls of each form an inclined surface that inclines inward, and is in contact with the respective top surface.
  • the upper roll holder 24 is supported on the frame 10 by the pressing devices 26 and 27.
  • the pressing devices 26 and 27 in the figure are obviously composed of a screw 27 and a pad 26, which are arranged on the roller base 24 (see Figure 9).
  • the latter has an inclined surface in a front view, which cooperates with the inclined surface of the upper roll holder 24.
  • the thread on the pair of screws 27 is used for the adjustment function.
  • the figure can move the upper roll holder 24 up and down, thereby driving the roller system to move up and down, and achieve the purpose of adjusting the roll gap.
  • the rolling combined force including the horizontal and vertical component forces is applied to the upper roll holder 24, the resultant force is transmitted to the screw pad blocks 26, 27, and finally reaches the frame 10; the shape of the frame 10 should be adapted to the roll holder 25, The shape of 24 matches.
  • the upper roll holder 24 and the lower roll holder 25 are inclined surfaces, the frame 10 can withstand horizontal and vertical forces.
  • the pressing devices 26, 27 and the pad 21 in the force transmission path are located on the work roll body. Near the middle of the axis, it is within the length of the work roll body.
  • FIG. 9 shows a cross-sectional view taken along the line D-D in FIG. 8. According to Fig. 8 and Fig. 9, the structure of the second embodiment and the shape of each part can be clearly seen. In addition, the number of the reduction devices may be set to two or more.
  • the rolling mill can be completely inverted, and the same effect is achieved.
  • the screw mechanism of this embodiment may be replaced by a hydraulic cylinder or the like.
  • FIGS. 10 and 11 are schematic diagrams of the third embodiment.
  • the lower roll holder 35 and the lower backing plate 31 have the same structure as the second embodiment.
  • the difference is that the arrangements of the reduction devices 36 and 37 are different. They are arranged obliquely on the upper surface of the frame 10 and the center axis of the frame 10 and are arranged diagonally opposite each other, so that the overall rolling mill configuration is more reasonable.
  • the rolling mill of the present invention has the following advantages:
  • the rolling mill of the invention has an integral frame corresponding to the shape of the roll base, and the rigidity of the frame is very large, the position of the pad or the roll gap adjusting device between the roll base and the frame is located near the middle of the axis of the work roll body.
  • the shape of the work roll generatrix is ensured not only on the vertical plane, but also on the horizontal plane, so that the bending deformation of the work roll basically does not fluctuate with the rolling force. Instead, the thickness error of the plate and strip is greatly reduced.
  • the rolling mill of the present invention can greatly simplify the design of the original roll shape and the control of the roll shape during rolling. Due to the bending deformation of the work roll in the horizontal and vertical planes, the rolling mill basically does not change with the fluctuation of rolling force. Various factors in the original roll shape design, such as roll bending deformation, flattening deformation, thermal expansion and Abrasion, etc., can not consider the most important factor of bending deformation, and thermal expansion and wear are factors that change slowly, so the original roll shape design and roll shape control during rolling can be greatly simplified.
  • the number of rolls of the roll system is 12 rolls, but the same applies to roll systems of other roll numbers.
  • the different roll holder components in the present invention may be arranged in a cross configuration with each other, or may be arranged in a cross configuration with a roll holder component or a roll system of a rolling mill in the prior art.
  • the present invention is not limited to being applied to a cold rolling mill, and can also be applied to a production machine for hot gift plate strips.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)

Description

二维控制挠曲度的
高精度礼机 技术领域
本发明一般涉及一种用于生产板带材的轧机， 尤其是涉及一种两维方向 控制轧辊挠度的轧机， 从而使轧制的板带材具有很高的横向厚度精度的特 性。 背景技术
通常轧制板带材的轧机种类较多， 从轧辊数目区分有二辊、 四辊和多 辊， 但目前常用的轧机有四辊轧机， HC轧机以及多辊轧机等等。 对于二辊、 四辊轧机来说， 存在很多缺点， 最主要的缺点是当轧制件通过机座时， 由于 压下装置位于轧辊的辊颈处， 因此使轧辊产生较大的弯曲变形， 轧辊的变形 势必造成轧制件 (轧制的板带材)的横向厚度偏差， 因而严重影响轧制件的质 量。 为解决上述问题不得不采取增大轧辊直径的方法， 对于四辊札机也不得 不采取增大支撑辊直径的方法。 但是， 随着轧辊直径的加大， 必然导致轧制 力的急剧增加， 而轧制力的变化反过来又导致了轧辊弯曲变形的增加。
多辊式轧机包括有整体牌坊型和开口型 (如图 1, 2所示)， 日本专利特开 昭 54 - 1259公开了一种多辊轧机， 其采用了塔形辊系， 当然， 这几种轧机 都具有刚性大等优点， 但是多辊轧机中的机架和支撑辊相接触的部位， 在轧 制力的作用下仍然产生挠曲变形， 因此造成工作辊的挠曲变形， 随之影响轧 制件厚度的均匀度。
为解决轧辊的挠曲变形， 减小或消除轧辊挠曲变形对轧制件厚度的影 响， 即对工作辊缝的形状进行控制， 使工作辊挠曲变形不受轧制力变化的影 响。 1991年 7月 24日公开了 "一种轧辊小挠度， 高刚度轧机"， 该中国专利 申请号为 89101393 , 审定号为 CN 1013250B。 为实现上述目的， 该发明将 塔形辊系的外层支撑辊以多段梁的形式支撑在轧辊座上， 作用在工作辊上的 轧制力， 经辊系分散地传递到上下两个轧辊座上， 轧辊座承受的垂直分力经 过压下或推上装置或垫块等类似零件传递到机架上， 压下或推上装置的数量 至少为两个， 压下或推上装置的位置在轧辊座上工作辊轴线中部附近。 可以 看出， 该专利的实施方案可使轧辊座在垂直面上的挠曲变形， 基本上不随轧 制力的变化而改变， 因此可有效地减少轧制件横断面上的厚度误差。 但是， 对于塔形辊系的多辊札机， 工作辊传递给中间辊的力存在垂直分力和水平分 力， 导致边缘支撑辊也承受着相当大的水平分力， 对于中国专利 89101393 中公开的轧机， 其水平分力使得轧辊座产生水平挠曲变形， 这样势必导致中 间辊直至工作辊产生较大的挠曲变形。
综上所述， 为了较理想地解决多辊轧机的工作辊挠曲变形， 不仅需要减 小垂直分力造成的挠曲变形， 而且还需要减小水平分力造成的挠曲变形， 也 就是说必须解决二维方向的变形， 方能使工作辊保持平直， 提高轧制件的横 断面上的厚度精度。 发明的目的
因此， 本发明是为了解决轧辊的二维挠曲变形问题， 即本发明的轧机不 但能减小垂直方向的挠曲变形， 而且也能减小水平方向的挠曲变形。 因此， 本发明的目的是提供一种高精度轧机， 该轧机承受轧制力后， 与现有技术相 比， 轧辊产生的挠曲变形大大减小， 因此减小了轧制件横断面厚度的误差， 提高了轧制件的尺寸精度。 技术解决方案
为实现上述目的， 本发明的实施方案如下， 一种轧制板帶材的轧机， 由 机架， 上、 下辊系以及上、 下轧辊座组成， 机架制成框架形， 它可承受轧制 力， 并可将辊系等全部礼机零部件安装在其内， 辊系安置成为塔形结构， 它 由工作辊、 支撑辊和中间辊三部分组成， 安置在辊系外层的上、 下支撑辊以 多段梁的方式分别支撑在上、 下轧辊座上， 上轧辊座可根据需要而上、 下移 动， 以便调整辊缝大小。 该轧机的特征在于， 礼机的机架， 轧辊座， 机架与 轧辊座之间的中间支撑装置共同组成二维支撑系统。 中间支撑装置设置在 上、 下轧辊座中的至少一个上， 并安排在工作辊辊身轴线中部附近， 其长度 不超过工作辊辊身长度。 该中间支撑装置包括压下装置和水平垫块， 压下装 置至少为二个， 设置在上轧辊座的上方并安放在机架内， 下轧辊座由水平垫 块支承， 压下装置和水平垫块均安排在轧辊座上工作辊辊身轴线的中部附 近， 本发明还设置有水平方向的上、 下垂直垫块组， 它们分别设在上、 下轧 辊座的两侧壁之间， 支撑在机架的侧壁上， 上、 下垂直垫块组分别由两楔形 件构成， 以便防止由于水平分力产生的挠曲变形。 该轧机机架的形状与轧辊 座的形状相配合。 附图简要说明
下面结合附图对本发明的实施例进行详细描述， 通过以下说明， 将会对 本发明的目的更加清楚了解：
图 1是现有技术中森吉米尔轧机示意图；
图 2是现有技术中开口型多辊轧机示意图；
图 3是现有技术中日本专利公开的多辊轧机示意图；
图 4是本发明轧机第一实施例的正剖视示意图；
图 5是本发明第一实施例沿图 4中 A - A的剖视图；
图 6是本发明第一实施例沿图 4中 B - B的剖视图；
图 7是本发明第一实施例沿图 4中 C - C的剖视图；
图 8是本发明轧机第二实施例的正剖视示意图；
图 9是本发明第二实施例沿图 8中 D - D的剖视图；
图 10是本发明第三实施例的正剖视示意图； 和
图 11是图 10所示第三实施例沿 E - E的剖视图。 实现本发明的最佳方式
图 1 - 3为目前惯用的轧机示意图， 由于结构所限， 在轧制过程中不可 避免地在轧辊上呈现出挠曲变形， 直接影响轧制件的质量， 由此使轧制的工 件表面精度， 主要是板材厚度精度， 达不到要求。
图 4 - 7 显示本发明提供的二维控制挠曲度的高精度轧机的第一实施 例， 由图 4可看出， 二维支撑系统包括机架 10， 轧辊座 4、 5以及二者之间 的中间支撑装置。 机架 10内容装有上、 下辊系、 上、 下轧辊座 4、 5等主要 零部件，机架 10可制成整体形， 也可由几部分经焊接或其它连接方法拼接构 成。 上、 下辊系分别由工作辊 1 , 中间辊 2和支撑辊 3组成， 它们共同形成 塔形辊系。 轧制件用标号 12表示。 辊系最外层的支撑辊 3以多段梁的形式支 撑在上、 下轧辊座 4和 5上， 一般为二段梁以上 (见图 5)。 中间支撑装置中， 上轧辊座 4和机架 10的内上壁之间装设有压下装置 6 , 它位于轧辊座上、 工 作辊辊身轴线的中部附近， 一般位于工作辊辊身长度之内。 压下装置 6上、 下动作， 使上轧辊座 4可在整体机架 10中上、 下移动， 以便调节轧辊间的缝 隙。 压下装置也可装备板厚自动控制机构（图中未示出）， 从而可准确地检测 轧制压力和辊缝的大小， 以便进行自动控制， 因此在轧制高精度产品的同时 还可实现生产自动化。
下轧辊座 5与机架 10的内下壁之间设有水平垫块 7(图 4), 它位于轧辊 座下工作辊辊身轴线的中部附近， 通常位于工作辊辊身长度之内。 艮明显， 下轧辊座 5由水平垫块 7支撑。 该水平垫块 7可采用不同的尺寸规格， 即其 厚度可形成系列。 通过不同规格厚度的水平垫块 7来实现轧制线的调整， 同 样也可采用液压装置或螺杆装置来代替垫块 7。
参照图 4 , 6和 7 , 从图 4中明显看出， 上轧辊座 4除了在垂直方向由 压下装置 6支撑以外， 在水平方向由两对上垂直垫块组 8、 8支撑， 将上垂 直垫块组 8、 8安排在机架 10的内侧壁和上轧辊座 4之间，分别置于上轧辊 座 4的左、 右两侧， 且位于工作辊辊身轴线的中部附近， 在辊身长度范围以 内。上垂直垫块组 8的构成是由两个倾斜方向相反的相配合的楔形件 (见图 6) 组成。 同样， 下轧辊座 5不仅在垂直方向由水平垫块 7支撑， 在水平方向也 被下垂直垫块组 9 , 9支撑，下垂直垫块组 9、 9分布在机架 10的内侧壁和 下轧辊座 5之间， 它们分别设在下轧辊座 5的左、 右两侧， 且位于工作辊辊 身轴线的中部附近， 在辊身长度范围以内。 下垂直垫块组 9也是由楔形件相 配而成 (见图 7)。上述下轧辊座 5连同水平垫块 7和下垂直垫块组 9一起支撑 在机架 10上。上述上轧辊座 4连同上垂直垫块组 8和压下装置 6支撑在机架 10上。
由于上述本发明轧机的构造， 使轧辊的挠曲度显著减小， 这是因为本发 明的轧机， 其机架、 轧辊座、 机架与轧辊座之间的中间支撑装置共同组成了 二维支撑系统， 即垂直和水平两方向上同时受到支撑， 具体地说， 礼机的上、 下轧辊座乃至支撑辊、 中间辊以及工作辊都在水平和垂直方向上被支撑着。 工作辊承受的轧制力， 经工作辊、 中间辊传递到支撑辊， 支撑辊是由安装在 芯轴上几个背衬轴承所组成 (参见图 5)， 因此， 轧制力传递到轴承外环， 此时 外环在旋转， 通过轴承再传递到上轧辊座， 垂直分力经压下装置最后到达机 架上内壁， 水平分力经垂直垫块组到达机架侧壁。 同理， 下工作辊承受的轧 制力经中间辊、 支撑辊传递到下轧辊座， 垂直分力经水平垫块 7传递到机架 下内壁， 水平分力经垂直垫块组 9到达机架侧壁。 在力传递路径中的压下装 置， 水平垫块、 垂直垫块组均位于工作辊辊身轴线的中部附近， 在辊身长度 范围以内。
所以， 本发明的軋机不仅在垂直面上， 而且也在水平面上确保了工作辊 母线的正确形状， 即母线的直线度， 因此使得工作辊的挠曲变形基本上不会 随着轧制力的变化而改变， 因而使其挠曲变形大大减小， 最终效果是使轧制 件板带材的厚度误差減小。
辊缝的调整是靠压下装置 6的动作， 通过使上轧辊座 4在机架 10的窗 口内上、 下移动来实现的。
本实施例也可以将轧机完全倒置， 即压下装置变为推上装置， 这时具有 同样的效果。
本实施例的液压压下装置也可由螺杵机构等来代替。
图 8 - 9展示本发明的第二实施例， 该轧机中也包括由机架， 轧辊座以 及二者之间的中间支撑装置构成的二维支撑系统。 具体部件有机架 10 ,上轧 辊座 24， 下轧辊座 25 , 垫块 21以及辊系， 辊系包括工作辊 1 , 中间辊 2 , 支撑辊 3 , 该辊系和第一实施例中的辊系相同， 均构成塔形辊系， 其外层支 撑辊 3也是以多段梁的形式分别支撑在轧辊座 24和 25上， 第二实施例和第 一实施例的区别在于： 中间支撑装置设置了压下装置 26、 27 , 用以取代第 一实施例中的压下装置 6和上垂直垫块组 8，设置了下垫板 21代替水平垫块 7和下垂直垫块组 9。 下面将具体说明。
参照图 8 , 由图中看出， 下轧辊座 25由两垫板 21支撑在机架 10上， 两垫板 21斜置地安排在机架 10和下轧辊座 25之间， 上、 下轧辊座的各外侧 壁分别形成向内倾斜的一斜面， 并与各自的顶面相接。上轧棍座 24由压下装 置 26、 27支撑在机架 10上， 图中的压下装置 26， 27明显是由螺杆 27和 垫块 26组成， 它们均勾布置在轧辊座 24上 (见图 9)。 后者在正面视图上具有 一斜面， 其与上轧辊座 24的斜面相配合。 一对螺杆 27上的螺紋是用于调正 作用， 从图中可看出， 它可使上轧辊座 24上、 下移动， 从而带动辊系上、 下 移动， 达到调正辊缝的目的。 当包括水平和垂直分力的轧制合力作用到上轧 辊座 24上时， 该合力传递至螺杆垫块组 26、 27 , 最后到达机架 10 ; 机架 10的形状应适应与轧辊座 25， 24的形状相配合。 由于上轧辊座 24及下轧 辊座 25是斜面， 所以机架 10可以承受水平和垂直两方向的力， 在力的传递 路径中的压下装置 26、 27和垫板 21均位于工作辊辊身轴线的中部附近，在 工作辊辊身长度范围之内， 因而机架产生的两方向的挠曲变形， 均可转换成 轧辊座直至工作辊的准刚性位移， 因此该二维支撑系统减少了工作辊的挠曲 变形。 图 9示出图 8中沿 D - D线的剖示图。 才艮据图 8和图 9可清楚看出实 施例 2的结构和各零件的形状。 另外， 压下装置的数量可设置为二个以上。
本实施例可以将轧机完全倒置， 也具有同样效果。 本实施例的螺杆机构可由液压缸等来代替。
图 10和 11是第三实施例的示意图， 由图中看出， 下轧辊座 35和下垫 板 31均与第二实施例结构相同。所不同的是压下装置 36， 37的安排布置不 同， 它们在机架 10的上部表面与机架 10的中轴线成斜倾方向排布， 并呈斜 向相对设置， 这样使整个轧机配置更加合理。
关于第三实施例轧机中所受轧制力的传递， 以及垂直和水平分力的承受 件， 均与第二实施例相同， 其形成的二维支撑系统对减小工作辊挠曲变形的 原理和作用也基本相同， 在此就不重复描述了。
本发明的轧机与现有技术相比， 具有以下优点：
由于发明的轧机带有相应于轧辊座形状的整体机架， 且机架的刚度很 大， 轧辊座与机架间的垫块或辊缝调整装置的位置， 位于工作辊辊身轴线的 中部附近， 在工作辊辊身长度范围以内， 且组成二维支撑系统， 从而不但在 垂直面上， 而且在水平面上保证了工作辊母线的形状， 使得工作辊的弯曲变 形基本上不随轧制力的波动而改变， 从而使板带材的厚度误差大大减小。
本发明的轧机可使原始辊型的设计和轧制中辊型的控制大为简化。 发明 的轧机由于工作辊的水平和垂直面上的弯曲变形， 均基本上不随轧制力的波 动而改变， 在原始辊型设计中的诸因素， 如轧辊的弯曲变形、 压扁变形、 热 膨胀和磨损等， 就可不考虑弯曲变形这一最重要的因素， 而热膨胀和磨损又 是变化緩慢的因素， 因而可使原始辊型的设计和轧制中辊型的控制大为简 化。 另外， 由于避免了现有技术轧机的两个工作辊弯曲变形所形成的"孔型"， 所以有利于金属的横向流动， 使得有利于用楔形坯料轧制高精度板帶材， 并 且使板带材的 "边缘减薄" 现象大为改善。
本发明所述的实施例中， 辊系的辊数为 12辊， 但对于其他辊数的辊系 同样适用。 另外， 本发明中不同的轧辊座组件可以相互交叉配置， 也可以与 现有技术中轧机的轧辊座组件或辊系交叉配置。
本发明不只限于应用在冷轧机， 还能适用于热礼板带材的生产用礼机。 尽管上面描述了本发明的较佳实施例， 但是， 对于本领域内的技术人员 来说， 在不超出本发明附加的权利要求书范围情况下， 对本发明所作的各种 更改均包括在本发明范围之内。

Claims

权利要求
1. 一种轧制板带材的轧机， 主要由机架 (10), 上辊系和下辊系， 以及上 轧辊座和下轧辊座组成， 所述上、 下辊系安置成塔形结构， 其特征在于， 该 轧机的机架、 轧辊座、 机架与轧辊座之间的中间支撑装置共同组成二维支撑 系统， 中间支撑装置设置在上、 下轧辊座中的至少一个上， 并安排在工作辊 辊身轴线中部附近， 其长度不超过工作辊辊身的长度。
2. 按照权利要求 1所述的轧机， 其特征在于， 所述中间支撑装置包括压 下装置 (6)和水平垫块 (7), 它们分别安装在机架 (10)的内顶壁和轧辊座 (4, 5)顶 面之间， 所述中间支撑装置还包括垂直垫块组 (8, 9)， 它们分别竖直地安设在 机架 (10)的内侧壁和轧辊座 (4, 5)的两侧壁之间， 并形成紧密贴合， 从而使机 架 ( 10)相对轧辊座构成二维支撑。
3. 按照权利要求 1所述的轧机， 其特征在于， 所述机架 (10)为一整体铸 造机架， 或通过焊接等连接方法拼合成整体机架， 其外壁开有窗口。
4. 按照权利要求 1所述的轧机， 其特征在于， 所述辊系最外层为支撑辊
(3), 其安排成多段梁的方式， 一般为二段以上。
5. 按照权利要求 2 所述的轧机， 其特征在于， 所述压下装置 (6)可带动 轧辊座沿机架 (10)的中轴线上、 下垂直运动， 以便调正辊缝。
6. 按照权利要求 2所述的轧机， 其特征在于， 所述垂直垫块组 (8, 9)是 由两对楔形件组成， 各对楔形件的配合面相对紧密贴合。
7. 按照权利要求 1所述的轧机， 其特征在于， 所述中间支撑装置包括压 下装置 (26, 27, 36, 37)和垫板 (21, 31), 它们分别设置在机架 (10)的内壁和轧辊 座 (24, 25, 34, 35)之间。
8. 按照权利要求 1所述的轧机， 其特征在于，所述轧辊座 (24, 25, 34, 35) 的每个轧辊座的两个外侧壁分别形成向里倾斜的斜面， 并与各自的顶面相 接。
9. 按照权利要求 7所述的轧机， 其特征在于， 所述压下装置 (26, 27, 36, 37)为螺杆垫块组， 其包括螺杆 (27, 37)和垫块 (26, 36)。
10. 按照权利要求 9所述的轧机， 其特征在于， 所述垫块 (26, 36)具有斜 面， 该斜面与轧辊座的向里倾斜的斜面相配合。
11. 按照权利要求 7所述的轧机， 其特征在于， 所述垫板 (21， 31)与机架 (10)的下部内斜面和轧辊座的斜面紧密配合。
12. 按照权利要求 9所述的轧机，其特征在于，所述螺杆垫块组 (26, 27, 36 37)可安排多个， 它们与机架 (10)的中轴线平行安排， 并均匀分布在中轴线两 侧。
13. 按照权利要求 9所述的轧机，其特征在于，所述螺杆垫块组 (26, 27, 36 37)可以与机架 (10)的中轴线成倾斜地对称安排。
14. 按照权利要求 2和权利要求 7所述的軋机， 其特征在于， 所述压下 装置 (6)和螺杆 (27, 37)可由液压缸代替。
PCT/CN1997/000091 1997-09-04 1997-09-04 Laminoir a regulation bidimensionnelle de la deviation des cylindres WO1999011397A1 (fr)

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UA2000031424A UA66804C2 (uk) 1997-09-04 1997-09-04 Прокатний стан з регулюванням валків по двох напрямках
US09/486,575 US6260397B1 (en) 1997-09-04 1997-09-04 Rolling mill with roll deflection bi-dimensionally controlled
EP97938743A EP1020238A4 (en) 1997-09-04 1997-09-04 ROLLING MILL WITH TWO-DIMENSIONALLY CONTROLLED ROLL BENDING
AU41102/97A AU750382B2 (en) 1997-09-04 1997-09-04 A rolling mill with roll deflection bi-dimensionally controlled
CA002302378A CA2302378C (en) 1997-09-04 1997-09-04 High-precision rolling mill with two-dimensional flexure control
KR10-2000-7002236A KR100504355B1 (ko) 1997-09-04 1997-09-04 이차원 휨변형을 제어하는 고정밀 압연기
PCT/CN1997/000091 WO1999011397A1 (fr) 1997-09-04 1997-09-04 Laminoir a regulation bidimensionnelle de la deviation des cylindres
BR9714857A BR9714857A (pt) 1997-09-04 1997-09-04 Laminadores de rolos de alta precisão com controle de flexão bidimensional
TR2000/00606T TR200000606T2 (tr) 1997-09-04 1997-09-04 İki boyutlu kırılma kontrollü yüksek basınç haddeleri.
RU2000107826/02A RU2198749C2 (ru) 1997-09-04 1997-09-04 Высокоточный прокатный стан с контролем изгиба валков в двух плоскостях
JP2000508485A JP2001514077A (ja) 1997-09-04 1997-09-04 二次元曲げ制御を有する高精度圧延機
DE29780451U DE29780451U1 (de) 1997-09-04 1997-09-04 Hochgenaues Walzwerk mit zweidimensionaler Biegungssteuerung
NZ503138A NZ503138A (en) 1997-09-04 1997-09-04 A rolling mill with a two - directional supporting frame to reduce roll deflection
CZ20000763A CZ298658B6 (cs) 1997-09-04 1997-09-04 Válcovací stolice

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US6260397B1 (en) 2001-07-17
CA2302378C (en) 2006-11-14
CZ298658B6 (cs) 2007-12-12
AU4110297A (en) 1999-03-22
KR20010023588A (ko) 2001-03-26
RU2198749C2 (ru) 2003-02-20
CA2302378A1 (en) 1999-03-11
JP2001514077A (ja) 2001-09-11
EP1020238A1 (en) 2000-07-19
UA66804C2 (uk) 2004-06-15
EP1020238A4 (en) 2004-07-21
AU750382B2 (en) 2002-07-18
DE29780451U1 (de) 2000-05-11
KR100504355B1 (ko) 2005-07-28
TR200000606T2 (tr) 2000-10-23

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