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| Number | Title | Issue Date |
| 7734368 | Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created A 3D virtual model of an intra oral cavity in which at least a part of a finish line of a preparation is obscured is manipulated in virtual space by means of a computer or the like to create, recreate or reconstruct finish line data and other geometrical correspondi... | 06/08/2010 |
| 7363192 | Noisy histograms A histogram can be generated and displayed with noisy category values, where the noise values are selected from a noise distribution that is calculated using a histogram diameter. The noise values are combined with histogram category values, thereby producing noisy ... | 04/22/2008 |
| 7293440 | Method of setting/controlling wedge in plate material rolling A wedge setup/control method for plate material rolling ensures that the work side and drive side are equal in the rolled plate thickness. The wedge setup/control method, which is used in reversible rolling of a plate material with a rough mill for hot rolling, incl... | 11/13/2007 |
| 6619086 | Control system for tandem rolling mill In a tandem rolling mill control system, an arithmetic operation on a looper torque command is adopted so that a signal obtained by integrating a looper angle deviation is not contained as a component, and a looper speed controller performs an arithmetic ... | 09/16/2003 |
| 6186434 | Tension apparatus A tension apparatus includes a mechanical section, signal output section, smoothing circuit, maximum value holding circuit, constant current driving circuit, and discharge circuit. The mechanical section has an electromagnetic brake driven by an exciting ... | 02/13/2001 |
| 5718138 | Looper control system for a rolling mill A looper control system has a looper that is interposed between two rolling stands of a tandem rolling mill and is actuated by a hydraulic actuator; and a control calculating section for calculating a speed change rate command value of a primary rolling m... | 02/17/1998 |
| 5375448 | Non-interference control method and device A non-interference control method and device in which an object to be controlled, which is controlled by a plurality of operation quantities and at least one control quantity, is divided into a plurality of partial control systems so that each of the part... | 12/27/1994 |
| 5233852 | Mill actuator reference adaptation for speed changes A method providing a rolling mill with compensation for changes occurring in rolling parameters that result from changes occurring in mill speed. The rolling parameters are under control of actuators that are connected to receive control reference voltage... | 08/10/1993 |
| 5172579 | Steering control apparatus for rolled plates A steering control apparatus for a rolled plate (1) rolled by a rolling mill (2), and which has a means (15) for obtaining by means of fuzzy inference a leveling amount of its polarity (15A) of the rolling mill for the snaking control of the rolled plate,... | 12/22/1992 |
| 5113678 | Method for controlling plate material hot rolling equipment A plate-like rolled material fed from a continuous casting equipment is rolled by a vertical mill for width control. A pair of horizontal mills are disposed one on each of the entry side and the delivery side of the vertical mill. Both the horizontal mill... | 05/19/1992 |
| 5086399 | Method and apparatus for setting-up rolling mill roll gaps In setting roll gaps of a rolling mill having stands arranged in tandem, the resistance to deformation of a workpiece in each of the stands is calculated on the basis of a cumulative strain in each stand, with strain of the workpiece which is in an entran... | 02/04/1992 |
| 4760723 | Elongation control system An elongation control system for controlling the elongation of a work to be rolled by a rolling mill applied to a continuous thin plate rolling equipment, through control of the rolling load of a press down device in the mill and control of tension on the... | 08/02/1988 |
| 4706479 | Tandem rolling control system A system for controlling interstand tension of a tandem rolling mill includes a detector for directly detecting a travelling speed of a work between two neighboring stands. A value of a speed of the work thus obtained is processed by a tandem rolling cont... | 11/17/1987 |
| 4662202 | Low tension cascade mill speed control by current measurement with temperature compensation A cascade speed control for tensionless production in a rolling mill by the measurement of stand motor current with temperature compensation. A low tension speed ratio between pairs of mill stands is calculated by successive incremental corrections. The c... | 05/05/1987 |
| 4625536 | Method of controlling unequal circumferential speed rolling A set-up method for unequal speed circumferential rolling. The setting values of the circumferential speeds of a higher speed roll and a lower speed roll and the roll position are obtained by using, as rolling parameters in a rolling schedule, the inlet a... | 12/02/1986 |
| 4616494 | Method of and apparatus for controlling load distribution for a continuous rolling mill A method of and an apparatus for controlling the load distribution ratio among a plurality of stands in a continuous rolling mill preferentially performs load distribution ratio control between or among a group of downstream side ones of the stands includ... | 10/14/1986 |
| 4614098 | Method of and apparatus for controlling load distribution for a continuous rolling mill A method of and apparatus for correcting the rolling load distribution ratio between given stands in a continuous rolling mill involves comparison of rolling load amounts at a pair of adjacent stands with a load distribution ratio set value. When coincide... | 09/30/1986 |
| 4520642 | Control device for continuous rolling machine A control device for a continuous rolling machine effects feedback control by measuring vertical and lateral dimensions at a point after an ith mill stand, and by controlling the tension in the material between an i-1th and the ith mill stand and the posi... | 06/04/1985 |
| 4491000 | Method and apparatus for improved sensing of roll separation force in a rolling mill A rolling mill stand, including a housing for supporting a pair of opposed rolls for reducing the thickness of a workpiece passed therebetween and an apparatus for adjusting the gap between the rolls, has associated therewith a scheme for controlling the ... | 01/01/1985 |
| 4487044 | Friction compensation in a rolling mill having automatic gage control A rolling mill stand which includes roller elements for reducing the thickness of a workpiece which is passed therebetween further includes an adjusting mechanism for adjusting the gap between the roller elements and a sensor for sensing the roll separati... | 12/11/1984 |
| 4485497 | Apparatus for controlling re-distribution of load on continuous rolling mill An apparatus, for controlling the re-distribution of a load in a longitudinal direction of a single strip (which is called hereinafter within the plate) on a multistage continuous rolling mill, stores a standard expression of the distribution of the load ... | 12/04/1984 |
| 4415976 | Method and apparatus for automatic mill zero correction for strip width The change in the mill modulus of the stand of a rolling mill due to the particular strip width of a run strip of material is taken into account by reference to the unloaded mill modulus of the stand and a desired roll gap opening is calculated on the bas... | 11/15/1983 |
| 4379395 | Interstand tension control system and method for tandem rolling mill An improved system and method for controlling the interstand tension in a tandem rolling mill by computing the interstand tension on the basis of detected process data, computing the difference or error between the computed interstand tension and the desi... | 04/12/1983 |
| 4333148 | Process line progressive draw control system A draw control system for a process line is provided wherein the process line comprises a number of stand or sections having the speeds N1, N2 -Nn. The stands are provided with a master reference voltage V which may be mod... | 06/01/1982 |
| 4307595 | Method of rolling a metal workpiece A metal workpiece is rolled in a rolling mill, including an upstream rolling stand or pinch rolls and more than one stream rolling stand. The roll gaps of the workrolls of the downstream rolling stand are set so that the eqivalent contact angle θe (θe=t... | 12/29/1981 |
| 4236216 | Control system of interstand tension of continuous rolling mills Voltage, current, speed, and acceleration of each stand driving motor are detected and the rolling force of each stand is also detected. A processor unit is provided to determine the torque and the rolling force of the stands under no tension condition as... | 11/25/1980 |
| 4199967 | Method of controlling a shape of a rolled sheet The forward slip and the backward slip at a first stand are dependant upon a draft, the back tension, the front tension, and the shape of a sheet in a tandem type rolling mill. It is difficult to control the shape solely by detecting the tension distribut... | 04/29/1980 |
| 4173133 | Continuous rolling mill A continuous rolling mill capable of rolling a sheet metal under a reduced rolling force without wrapping it around work rolls wherein, at each of rolling stands, the upper and lower work rolls are rotated at different peripheral speeds in such a way that... | 11/06/1979 |
| 4162624 | Tension control method for a rolling mill In the control of the tension of a workpiece which is rolled by a tandem rolling mill, a tension control method for a rolling mill wherein the tension of a workpiece is controlled by a looperless tension control method employing no looper at the threading... | 07/31/1979 |
| 4145902 | Rolling mill A rolling mill capable of rolling a sheet metal into a final product under a low rolling pressure without the need of wrapping the sheet metal around a pair of work rolls. The pair of work rolls are rotated at different peripheral velocities, and the tens... | 03/27/1979 |
| 4141071 | Automatic diametric dimension control for mill for rolling round bars A mill for rolling round bars, having a penultimate and a last stand with mutually perpendicular roll axes, is provided with a control system for varying the roll gaps of said stands and for axially aligning the rolls in the last stand. A gauge measures t... | 02/20/1979 |
| 4137742 | Interstand tension control method and apparatus for tandem rolling mill The rolling force, rolling torque, incoming workpiece thickness and roll gap at a first rolling stand are detected when a workpiece is fed into the nip between the rolls of the first rolling stand to provide their reference values P10, G10... | 02/06/1979 |
| 4087859 | Apparatus for measuring and controlling interstand tensions of continuous rolling mills There are provided operation apparatus and presetting apparatus for presetting a rolling program into the operation apparatus. In response to the preset value the operation apparatus computes the forward tension stress coefficient γ and the rearward tens... | 05/02/1978 |
| 4011743 | Stand speed reference circuit for a continuous tandem rolling mill A stand speed reference circuit is disclosed for providing speed reference signals to each of a plurality of selected stands in a continuous tandem rolling mill. U.s. pat. No. 3,852,983 to Cook for "Work Strip Gauge Change During Rolling in a Tandem Rolli... | 03/15/1977 |
