SU986525A1

SU986525A1 - Apparatus for mounting mandrel rod

Info

Publication number: SU986525A1
Application number: SU813264216A
Authority: SU
Inventors: Виктор Алексеевич Ермократьев; Василий Павлович Жицкий; Владимир Игоревич Гриневич; Валерий Константинович Цапко; Виктор Михайлович Гребеник; Георгий Иосифович Хаустов
Original assignee: Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт
Priority date: 1981-03-27
Filing date: 1981-03-27
Publication date: 1983-01-07

Description

(54) УСТРОЙСТВО ДЛЯ УСТАНОВКИ ОПРАВОЧНОГО (54) DEVICE FOR INSTALLATION OF EDITOR

Изобретение относитс к трубопрокатному производству и касаетс конструкции устройств дл установки оправбчного стержн на станах холодной прокатки труб, в частности дл его зажима и поворота.The invention relates to pipe production and relates to the construction of devices for mounting the bar on the cold rolling mills of pipes, in particular for its clamping and turning.

Известно устройство дл зажима оправочного стержн на стане холсТдной прокатки труб - с торцовой загрузкой , включающее разъемный гребенчатый подшипник, наружные вкладыши которого закреплены в ползунах, перемещающихс перпендикул рно оси стержн в каретке зажима и приводимых в движение от гидроцилиндра через систему рычагов, рейку и шестерню Cl1.A device for clamping an arbor rod in a hollow tube rolling mill is provided with end loading, including a split comb bearing, the outer liners of which are fixed in sliders moving perpendicular to the axis of the rod in the clamp carriage and driven from the hydraulic cylinder through a system of levers, rail and gear Cl1 .

Основными недостатками этого устройства вл етс сложность его конструкции , определ ема сложным приводом , выполненным в виде кинематически св занных элементов: гидроцилиндра, системы рычагов, рейки и шестерни, а также ненадежность его работы, св занна с осевым смещением оправочного стержн при его установке.The main disadvantages of this device are the complexity of its design, determined by a complex drive made in the form of kinematically connected elements: a hydraulic cylinder, a system of levers, slats and gears, as well as the unreliability of its work, associated with the axial displacement of the mandrel bar during its installation.

Наиболее близким по технической сущности к изобретению вл етс устройство дл зажима и поворота оправочного стержн , включающее корпус, установленную в нем обойму с приводомСТЕРЖИЯThe closest to the technical essence of the invention is a device for clamping and turning the mandrel bar, including a housing, a holder mounted in it with a drive.

поворота, две последовательно -расположенные пары кулачков под пазы стержн , одна из которых размещена в обойме поворотно на ос х С21.rotation, two successively-arranged pairs of cams under the grooves of the rod, one of which is placed in the holder pivotally on the C x axis.

Недостатком данногчэ устройства вл етс невозможность осевой настройки положени стержн , требующейс дл компенсации осевого смещени , вызванного свободным прогибом стержн или The disadvantage of this device is the impossibility of axially adjusting the position of the rod required to compensate for the axial displacement caused by the free deflection of the rod or

10 усили ми деформации. Указанные осевые смещени измен ют положение оправки в очаге деформации и привод т к нарушению взаимодействи стержн с зажимными кулачками, снижа тем самым надеж15 ность работы и увеличива врем загрузки стана.10 deformation forces. These axial displacements change the position of the mandrel in the deformation zone and disrupt the interaction of the rod with the clamping jaws, thereby reducing the reliability of operation and increasing the loading time of the mill.

Целью изобретени вл етс повышение надежности работы устройства путем снижени осевого смещени оправоч20 ного стержн при его установке.The aim of the invention is to increase the reliability of the device by reducing the axial displacement of the mandrel rod during its installation.

Поставленна цель достигаетс тем, что устройство дл установки оправочного стержн , включающее корпус, установленную в нем обойму с приводом The goal is achieved by the fact that the device for mounting an arbor rod, comprising a housing, a housing mounted therein with a drive

Claims

25 turns, two consecutive pairs of cams under the grooves of the rod, one of which is placed in the holder pivotally on; The axles are provided with sleeves located on both sides of the ends of the cage in the guides made on it, having openings for cams and a lever-piston drive for longitudinal movement, and the second pair of cams are mounted rotatably on the axes in the cage perpendicular to the first pair of cams. To improve accuracy, the mounting of the mandrel bar along the rolling axis of a pair of cams are arranged in mutually perpendicular planes. The forced rotation of the cams by the drive sleeve permits compensation of the axial displacement of the rod during loading by setting it to its original position by applying the cams to the side surfaces of the grooves of the rod. The arrangement of pairs of cams in mutually perpendicular planes makes it possible to compensate for the axial displacement, regardless of its direction. - and to carry out axial fixation of the mandrel bar relative to the deformation zone. In addition, one device can be used for installation, fixation and rotation of the refill rod along the rolling axis. The drawing shows a device The device for mounting an arbor rod includes a housing 1, a rotation-mounted holder 2 mounted therein - (not shown in the drawing) two successively arranged pairs of cams 3 and 4 under the grooves 5 of the rod b J Cams 3 are mounted on axles x 7 , and the cams 4 on the x-axis S. On either side of the ends of the cage 2 in the guides 9. made on it, sleeves 10 and 11 are located, having openings 12 and 13 for cams 3 and 4. Sleeves 10 and 11 move in the longitudinal direction lever-piston drive mounted in the housing 1. The drive is turned on m movable relative to the housing 14 and the cylinder 1 is mounted therein with a piston rod 15, 16, section yuschig interior of the housing into two cavities A and 5. The cylinder 14 is connected to the sleeve 11 by a lever 17, and the rod is connected to the sleeve 10 by a lever 18. A pair of cams 4 is arranged perpendicular to a pair of cams 3. I The device works as follows. After supplying the workpiece to the mill, the air is compressed into the cavity L of the cylinder 14, under the influence of which the rod 15 and the cylinder move in opposite directions relative to the housing 1 and through p) B1chagi 18 and 17 communicate movement of the sleeves 10 and 11, which rotate around the axes 7 and 8, cams 3 and 4. When turning to the latch 3 or the cams 4, they come into contact with the side surfaces of the corresponding grooves 5 of the rod 6 and, acting on them, move the rod 6. At the end of the movement of the cams, their bushings abut their ends 2, and the rod is set Chaga original position relative deformation and It appears strictly fixed to the rolling axis of the cams in both the axial and in raialnom directions. During the reforming process, the rod is held by cams and rotates with the sleeve, since rotation from the sleeve is transmitted through the cams in contact with the grooves to the rod. After the end of rolling, before loading, the compressed air is supplied to the cavity 6, acting on the piston 16 and cylinder 14, moves them in opposite directions. Through the levers 18 and 17, this movement is communicated to the sleeves 11 and 10, which move towards the holder, by pulling the cams 4 and 3 and turning them sufficiently to pass through the device of the loaded workpiece. After the download is complete, the process is repeated. The cam rotation can be carried out both simultaneously and alternately. - A device for setting the mandrel bar prevents axial displacement of the mandrel rod when it is installed, improves the reliability of operation and the quality of the rolled metal. In addition, the mill loading time is reduced i.e. productivity increases. Approximately the annual economic effect in comparison with the basic object is 2119 rubles. Claim device A device for mounting an arbor rod, comprising a housing, a rotationally mounted clip therein, two successively arranged pairs of cams under the grooves of the rod, one of which is placed in, the holder swivels on the axes, so that . that, in order to increase the reliability of operation by reducing the axial displacement of the mandrel bar during installation, it is provided with They are located on both sides of the ends of the cage in guides made on it, having cams and lever-piston drive for longitudinal movement, and the second pair of cams is mounted pivotally on the axes in the cage perpendicular to the first pair of cams. Sources of information taken into account in examination 1, Grinshpun M.I., Sokolovsky V.N. Cold rolling pipe mills. M., Mechanical Engineering, 1967, p. 219-220.

2. Patent CDIA 1 2062559, cl. 72-189, 1936 (prototype).