Drive mechanism for vertical rolling mills Koyo Seiko
The present invention relates to a drive mechanism for vertical rolling mills and more particularly it relates to a drive mechanism for vertical rolling mills which itself is provided with a device for mounting a driven coupling on and dismounting it from the neck of a This study considers the main drive system instability of the rolling mill caused by the spindle axis position deviation, ignoring the effect of the rolls’ movement in Torsional Vibration for Rolling Mill with the Drive System
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(PDF) Drives for large vertical roller mills
PDF On Jan 1, 2017, J. Harder published Drives for large vertical roller mills Find, read and cite all the research you need on ResearchGate.A rolling mill driving system is a multiple degree of a free- dom torsional vibration system [1]. The torsional vibra- tion of a driving system causes the rolling speed Torsional Vibration for Rolling Mill with the Drive System
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Drive systems for vertical roller mills ResearchGate
Drive systems for vertical roller mills Download Citation On May 1, 2017, Martin Baechler and others published Drive systems for vertical roller mills Find, read Firstly, considering the nonlinear friction between the roll gaps, a torsional vibration model of the main drive system of rolling mill is established. Then, with the Adaptive Torsional Vibration Control of the Nonlinear Rolling Mill
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Introducing the Vertical-Roller Mill with Driven Rollers: An
[Show full abstract] vertical mill the market is offered an innovative drive concept that is specifically suitable for reliably driving large vertical mills. In addition to The Dresden Technical University carried out interviews with numerous rolling mill operators, which helped to confirm the above statements. The interviews were COMPARISON OF ROLLING MILL DRIVE SHAFT
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Steel and rolling mill industry VEM Group
We plan, produce, supply and put complete system solutions in operation in metallurgy focusing on rolling and tube-rolling mills. We build complete electrical drive units consisting of transformers, frequency converters and The new torsional vibration suppression algorithm is developed for the rolling mill main drive system with the untrue measurement information that is obtained Adaptive neural torsional vibration suppression of the rolling mill
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Torsional Vibration for Rolling Mill with the Drive System
tion mechanism of the system vibration under the state of axis oset and provides theoretical support for the operation and maintenance method of the rolling mill drive system. 2 Mathematical Model 2.1 Dynamic Model The rolling mill drive system mainly consists of the motor, reducer, main shaft, speed divider, arc gear shaft, work rollDrive mechanism for vertical rolling mills . Jul 25, 1977 Koyo Seiko Company Limited. A drive mechanism which itself has the function of mounting a driven coupling on and dismounting it from a roll neck. The drive mechanism comprises a drive shaft section comprising inner and outer shafts coupled together in such a manner as to be onlyUS Patent for Drive mechanism for vertical rolling mills
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ANALYSIS OF DRIVE MECHANISMS FOR THE WORKING
in the working-stand drive mechanism. Keywords: cold rolling, CPT mill, crankshaft/rod drive mechanism, dynamic load, increasing the productivity. Periodic longitudinal cold rolling has been widely used in the Russian pipe and tube industry and in developed in-dustrial countries such as Germany [1], France [2, 3], etc., over the past A vertical rolling mill is disclosed wherein a means for driving the mill rolls is comprised of a rigid vertical spindle having universal joints and couplings at either end which is detachably connected to the mill roll at its lower end and connected to a splined driving member at its upper end. Drive mechanism for vertical rolling millsUS4441352A Vertical mill Google Patents
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Drive mechanism for vertical rolling mills Google Patents
Drive mechanism for vertical rolling mills Download PDF Info Publication number US4094174A. US4094174A US05/818,958 US81895877A US4094174A US 4094174 A US4094174 A US 4094174A US 81895877 A US81895877 A US 81895877A US 4094174 A US4094174 A US 4094174A Authority US United States Prior art keywords drive shaftDrive mechanism for vertical rolling mills Download PDF Info Publication number Authority US United States Prior art keywords drive shaft shaft section drive universal joint rod 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 noDrive mechanism for vertical rolling mills Google Patents
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Drive mechanism for vertical rolling mills Google Patents
Drive mechanism for vertical rolling mills Download PDF Info Publication number US4094174A. US4094174A US05/818,958 US81895877A US4094174A US 4094174 A US4094174 A US 4094174A US 81895877 A US81895877 A US 81895877A US 4094174 A US4094174 A US 4094174A Authority US United States Prior art keywords drive shaftDrive mechanism for vertical rolling mills Download PDF Info Publication number Authority US United States Prior art keywords drive shaft shaft section drive universal joint rod 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 noDrive mechanism for vertical rolling mills Google Patents
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A study of operating parameters of a roller mill with a new
The influence of modifying the working unit by inserting a vertical plate between cooperating rollers on performance indicators fineness, energy consumption, and performance has been investigated. The new design of roller mill assembly consists of two rotating rollers with outer rings, between which a grinding plate is fixedMaking “digital twins” for rolling processes and mill equipment should begin with the development of mathematical models of the deformation zone. The deformation zone of two-high flat mill rolling have been studied in detail, relevant models are available in many academic papers. However, the same cannot be said about the most complex Calculating Power Parameters of Rolling Mill Based on
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FULL AUTOMATIC VERTICAL RING ROLLING MILL
Vertical Ring Rolling Mill, or VRRM for short, being discussed here, was a machine that was developed in Japan some decades ago, and had a ring-forming roll configuration which was different from the one that is seen with the currently-conventional horizontal (radial/axial) type ring rolling mill. Fig. 1-1 shows the roll configuration of aThis study establishes a vertical–horizontal coupling vibration model of hot rolling mill rolls under multi-piecewise nonlinear constraints considering the piecewise nonlinear spring force and piecewise nonlinear friction force constraints of the hydraulic cylinder in the vertical direction of the rolls, the piecewise stiffness constraints in the Vertical–Horizontal Coupling Vibration of Hot Rolling Mill
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Dynamic analysis of vibration stability in tandem cold rolling mill
Kim et al. (2012) analyzed the cause and characteristics of the chatter vibration in a six-high cold rolling mill by using multibody dynamics. However, it is difficult to incorporate coupling effects and interactions between stands in FEM model. Based on state-space methods, Hu et al. (2006b, 2006c) investigated mill stability in both singleFIELD: plastic working of metal in vertical and universal stands of rolling mill, namely mechanisms for transmitting rotation of motor to vertical rolls of rolling stand of strip rolling mill. SUBSTANCE: drive unit of vertical rolls of rolling stand includes mounted in frame: electric motor, reduction gear with outlet shafts, spindles, mechanisms for lifting and RU2281821C1 Rolling stand vertical roll drive unit Google
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Vibrations of tandem cold rolling mill: coupled excitation of rolling
Vibration issues of a five-stand tandem cold rolling mill were found in the steel production practice, and the experimental observation and numerical analysis indicated that the vibrations were related to the back-up roll bearing. The results were validated by replacing the back-up roll bearing with the new bearing resulting in 30% decline in Patent Citations (9) Publication number Priority date Publication date Assignee Title. US1891579A * Treadwell Engineering Company Rolling mill. US1985405A * Mackintosh Hemphill Company Rolling mill connecter. US2002531A * Mesta Machine Co Rolling mill.US2575231A Vertical rolling mill Google Patents
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Coupled Vibration Behavior of Hot Rolling Mill Rolls under
2.3. Nonlinear Coupled Vibration Model of Hot Rolling Mill Rolls. According to the structure diagram of the four-high hot rolling mill shown in Figure 1, we consider the structural constraints on the roll and the effect of dynamic rolling force, the nonlinear spring force exerted by the hydraulic cylinder in the vertical direction, and the friction force change The rolls in contemporary four-high mills cannot be maintained parallel during the rolling process. Therefore, four-high rolling mill vibrations take place in six degree of freedom (DOF) leading to spatial behaviors involving vertical, horizontal, axial, torsional, cross and swinging vibration modes resulting in complex relative motions between the rolls.Spatial Vibration and Its Numerical Analytical Method of
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Processes Free Full-Text Research on the Vertical Vibration
The rolling mill with hydraulic system is widely used in the production of strip steel. For the problem of vertical vibration of the rolling mill, the effects of different equivalent damping coefficient, leakage coefficient, and proportional coefficient of the controller on the hydraulic screw down system of the rolling mill are studied, respectively. A variable mass tuned particle absorber is designed for the nonlinear vertical vibration control of the corrugated rolling mill in the composite plate rolling process. Considering the nonlinear damping and nonlinear stiffness between the corrugated interface, a three-degree-of-freedom nonlinear vertical vibration mathematical model of corrugated Application of dynamic vibration absorber for vertical
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