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    • 3. 发明授权
    • Rolling mill for sizing tubes or cylindrical bodies in general in the
iron and steel industry
    • 轧钢机一般用于钢铁工业中的定径管或圆柱体
    • US6116071A
    • 2000-09-12
    • US147681
    • 1999-05-10
    • Ettore CernuschiVincenzo Palma
    • Ettore CernuschiVincenzo Palma
    • B21B1/18B21B13/10B21B17/04B21B17/14B21B31/10B21B37/78B21B13/08
    • B21B17/04B21B13/103B21B37/78B21B1/18B21B17/14B21B2203/06B21B31/10
    • The invention relates to a rolling mill for sizing tubes or cylindrical bodies such as bars, rods and so on, and is intended for the iron and steel industry. The rolling mill is made up of a multiplicity of fixed three-roll rolling units, i.e. of the type known per se in which the position of the rolls cannot be adjusted under load and they are kinematically connected to each other so as to be set in rotation simultaneously, downstream of which are a multiplicity of adjustable three-roll rolling units. In the latter units the position of the rolls can be adjusted even under load and the purpose of these is to carry out the finishing of the work that is to be sized. The invention enables excellent use to be made of the characteristics of strength of the fixed units and of accurate working of the adjustable units, with the result that it is possible to build an inexpensive but high-performance rolling mill. In a preferred embodiment, in the adjustable units the rolls are mounted on lever-type arms pivoting in planes lying radially with respect to the rolling axis.
    • PCT No.PCT / EP97 / 03400 Sec。 371日期1999年5月10日 102(e)1999年5月10日PCT 1997年6月30日PCT公布。 出版物WO98 / 06515 日期:1998年2月19日本发明涉及一种用于对管材或棒状体等圆柱体进行定径的轧机,用于钢铁工业。 轧机由多个固定的三辊轧制单元构成,即本身已知的类型,其中辊的位置不能在负载下调节,并且它们在运动学上被连接以便被设置在 同时旋转,其下游是多个可调节的三辊轧制单元。 在后一单元中,即使在负载下也可以调节辊的位置,并且这些的目的是进行尺寸的工件的精加工。 本发明能够很好地利用固定单元的强度特性和可调单元的精确加工,从而可以构建廉价但高性能的轧机。 在优选实施例中,在可调单元中,辊被安装在杠杆式臂上,该臂在相对于滚动轴线径向放置的平面中枢转。
    • 7. 发明申请
    • Mandrel Holder Head With Release Device
    • 带释放装置的心轴支架头
    • US20110277526A1
    • 2011-11-17
    • US12225754
    • 2007-03-26
    • Ettore CernuschiStefano Deplano
    • Ettore CernuschiStefano Deplano
    • B21B25/02
    • B21B25/02B21B25/06
    • A mandrel holder head with release/fastening device of the mandrel for rolling metallic tubes comprises a mandrel holder (1) which accommodates within an internal seat a half collar (2) of externally cylindrical shape through an opening in the side wall. In the internal seat are accommodated both an end part (52) of the mandrel shank and the half collar (2) through the opening. The half collar has an internal cavity with a second longitudinal side opening which accommodates a second part (51) of the shank of diameter smaller than that of the first part (52). The half collar is divided along an axial direction into two cylindrical parts (21, 22) which have different diameters. The locking member (30, 31) of the half collar (2) holds it in the mandrel holder (1) seat in working conditions, while allowing shank release with an axial movement in locked conditions.
    • 具有用于滚动金属管的心轴的释放/紧固装置的心轴保持器头包括心轴保持器(1),该心轴保持器(1)通过侧壁中的开口容纳在外部圆柱形形状的内部座圈内的半套环(2)内。 在内部座椅中,通过开口容纳芯轴的端部(52)和半环(2)。 半环具有内腔,其具有第二纵向侧开口,第二纵向侧开口容纳直径小于第一部分(52)的直径的第二部分(51)。 半轴环沿轴向分成两个具有不同直径的圆柱形部分(21,22)。 半轴环(2)的锁定构件(30,31)在工作状态下将其保持在心轴保持器(1)座中,同时在锁定状态下允许柄部释放轴向运动。
    • 8. 发明授权
    • Control system for hydraulic rolling mill capsules for rod-like bodies
    • 用于棒状体的液压轧机胶囊的控制系统
    • US09463497B2
    • 2016-10-11
    • US13490800
    • 2012-06-07
    • Ettore CernuschiSimone Piacentini
    • Ettore CernuschiSimone Piacentini
    • B21B13/10B21B31/10
    • B21B13/10B21B31/10
    • In order to facilitate side extraction of the roller holder cartridge (3) in a rolling mill stand (100), the strokes of the hydraulic capsules needed to take the pistons of the same clear from the trajectory traveled by the roller holder cartridge (3) during the extraction of the same from the rolling mill, may reach values indicatively between 150 and 400 mm, values which can negatively affect response times of the position control system of said capsules (4″). In order to continue to apply the same capsule control methods but with a considerably more dynamic system capable of rapidly and accurately reacting to sudden changes of pressure, the servo valves in the control circuits are of the four-way type, instead of the three-way type.
    • 为了便于在轧机机架(100)中侧辊抽出辊保持器盒(3),液压胶囊的行程需要从由滚柱保持架(3)移动的轨迹中取出相同清除的活塞, 在从轧机中提取相同的温度时,可以达到指示在150和400mm之间的值,这可以对所述胶囊(4“)的位置控制系统的响应时间产生负面影响。 为了继续应用相同的胶囊控制方法,但是具有能够快速准确地对突然的压力变化作出反应的相当多的动态系统,控制电路中的伺服阀是四通式, 方式类型。