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253 results about "Large deflection" patented technology
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System for bi-directionally controlling the cryo-tip of a cryoablation catheter
InactiveUS20050288656A1Restore fluencyMaximum recoveryMedical devicesCatheterCryoablationLarge deflection
A bi-directional system for actively deflecting the distal tip of a catheter includes a reconfigurable tube that is positioned proximal to the catheter's distal tip. The tube is formed with slits that are arranged to allow the tube to be transformed from a relaxed, cylindrical configuration to a plurality of deflected configurations. First and second pull wires are provided, with each wire having a respective distal end that is attached to the distal end of the tube. Each wire extends to a catheter handle where it is attached to a respective reel. The reels can be rotated, back and forth, to selectively deflect or relax the tube. To ensure a smooth recovery after a relatively large deflection, a mechanism is disclosed for delaying an application of tension on one of the pull wires until at least a portion of any tension on the other pull wire is released.
Owner:CRYOCOR
Micropump assembly for a microgas chromatograph and the like
A MEMS-fabricated microvacuum pump assembly is provided. The pump assembly is designed to operate in air and can be easily integrated into MEMS-fabricated microfluidic systems. The pump assembly includes a series of pumping cavities with electrostatically-actuated membranes interconnected by electrostatically-actuated microvalves. A large deflection electrostatic actuator has a curved fixed drive electrode and a flat movable polymer electrode. The curved electrodes are fabricated by buckling the electrode out-of-plane using compressive stress, and the large deflection parallel-plane electrostatic actuators are formed by using the curved electrode. The curved electrode allows the movable electrode to travel over larger distances than is possible using a flat electrode, with lower voltage. The movable electrode is a flat parylene membrane that is placed on top of the curved electrode using a wafer-level transfer and parylene bonding process. Using this approach, large out-of-plane deflection of the parylene membrane is achieved using a voltage smaller than is achievable using flat parallel-plate electrodes.
Owner:RGT UNIV OF MICHIGAN
Outer rotor magnetic levitation conical spherical gyro flywheel
ActiveCN105438500AImprove levitation accuracyEliminate couplingCosmonautic vehiclesMagnetic holding devicesAxial displacementMagnetic bearing
The invention discloses an outer rotor magnetic levitation conical spherical gyro flywheel. The outer rotor magnetic levitation conical spherical gyro flywheel mainly comprises a static part and a rotor part, wherein the static part comprises an upper sealing cover, a middle gyro case, a lower sealing cover, a sealing ring, an upper gyro case, a lower gyro case, a motor component stator, an Lorentz force magnetic bearing stator, an axial displacement sensor component, a radial displacement sensor component, a mandrel, a protective bearing and a radial conical spherical magnetic bearing stator component. The rotor part comprises a gyro outer turntable component and a protective bearing cover. The outer rotor magnetic levitation conical spherical gyro flywheel disclosed by the invention adopts a spherical shell-shaped magnetic air gap structure and has the advantages of large inertia, easy control, large deflection angle, high torque accuracy and the like.
Owner:BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY +1
Method for configuring shape of supporting roll of four-high mill and shape of working roll thereof
ActiveCN101554635ASolve peelingSolve the large amount of wear and tearCounter-pressure devicesRollsProduction lineStress concentration
The invention relates to a method for configuring the shape of a supporting roll of a four-high mill and the shape of a working roll thereof, belonging to the technical field of steel rolling. According to three types of width specifications of band steel which are most rolled by hot-rolling band steel production line, sixth-power polynomial supporting roll shape technology and second-power working roll shape curve are used for configuration so as to lead the contact length of the supporting roll and the working roll and the width of the rolled band steel to be fit. The method has the advantages of eliminating hazardous contact areas in which the parts of the two ends of the supporting roll with the flat roll shape and the working roll expand out of the edge of the band steel to generate large deflection and deformation, solving the problems that the stress concentration of the edges of the supporting roll and the working roll in a hot continuous mill for wide band steel causes stripping and the mill roll with the flat roll shape has large wearing capacity and is not even, reducing the consumption of the mill rill, saving energy, reducing consumption and reducing cost for rolling steel; and by the technical configuration of R2 working roll shape and the supporting roll shape, the invention solves the plate-shape problems that the middle blank generates negative convexity and the wedge shape is large, and improves the control precision of the shape of hot-rolled band steel.
Owner:SHOUGANG CORPORATION
Spring loaded compliant seal for high temperature use
A flexible seal having an X-shaped cross section that forms four contact points on four contact surfaces of two opposed seal slots. The flexible seal is used for a component in which the two seal slots undergo a large deflection such that the opposed slots are not aligned and a rigid seal will not form an adequate seal. The flexible seal can be used in a component of a combustor or a turbine in a gas turbine engine where opposed seal slots undergo the large deflection during operation.
Owner:FLORIDA TURBINE TECH
System for bi-directionally controlling the cryo-tip of a cryoablation catheter
InactiveUS7374553B2Restore fluencyMaximum recoveryMedical devicesCatheterLarge deflectionCryoablation
A bi-directional system for actively deflecting the distal tip of a catheter includes a reconfigurable tube that is positioned proximal to the catheter's distal tip. The tube is formed with slits that are arranged to allow the tube to be transformed from a relaxed, cylindrical configuration to a plurality of deflected configurations. First and second pull wires are provided, with each wire having a respective distal end that is attached to the distal end of the tube. Each wire extends to a catheter handle where it is attached to a respective reel. The reels can be rotated, back and forth, to selectively deflect or relax the tube. To ensure a smooth recovery after a relatively large deflection, a mechanism is disclosed for delaying an application of tension on one of the pull wires until at least a portion of any tension on the other pull wire is released.
Owner:CRYOCOR
Vehicle light
InactiveUS20110096561A1Increase awarenessSignificant declineVehicle headlampsLighting heating/cooling arrangementsVisibilityVertical plane
A vehicle light can resolve remarkable bright-dark boundaries formed between a far side and a near side of the light, thereby improving the near-side visibility for a driver. The vehicle light can include a light emitting device having an optical axis and a projection lens. The projection lens can include a light exiting surface that can project light beams emitted by the light emitting device while diffusing the light beams in both left and right directions when observed within a horizontal plane. The light exiting surface can include a left refraction surface that can project the light beams downward by a larger deflection angle with respect to a horizontal plane as the exit position of the light is farther away from the optical axis in the upper and lower directions when observed within a vertical plane. The light exiting surface can also include a right refraction surface that can project the light beams downward by a larger deflection angle with respect to the horizontal plane as the exit position is farther away from the optical axis in the upper and lower directions when observed within a vertical plane.
Owner:STANLEY ELECTRIC CO LTD
Steel plate for plastic mold for rolling continuous casting slab with thickness of 400mm and production method of steel plate
The invention provides a steel plate for a plastic mold for rolling a continuous casting slab with the thickness of 400mm and a production method of the steel plate, belonging to the technical field of mold steel. The steel plate comprises the following chemical components in percentage by weight: 0.3-0.5% of C, 0.2-0.5% of Si, 1.0-1.6% of Mn, at most 0.008% of P, at most 0.006% of S, 0.02-0.05% of Al, 1.3-2.5% of Cr, 0.1-0.6% of Mo and the balance of Fe and unavoidable impurities. The steel plate for the plastic mold, which has HB (Brinell Hardness) of 290-330 and has favorable ultrasonic flow detection performance, can be produced successfully and stably through converter melting, LF (Low Frequency) furnace refining, RH (Relative Humidity) vacuum treatment, continuous casting of a 400-mm thick large-section casting machine, casting blank stack cooling, hot charging and hot feeding, large-deflection controlled rolling, steel plate stack cooling, normalizing and tempering heat treatment and obtainment of fine sorbite and troostite structures.
Owner:SHOUGANG CORPORATION
Angle-changeable transmission device, vehicle chassis and control method thereof
ActiveCN105857387AControl flowControl left and right stretchingSteering linkagesMechanical steering gearsLow speedDrive wheel
The invention relates to an angle-changeable transmission device which comprises a power output shaft, a power input shaft, a fixing rack, a swing rack and a power transmission device. The power input shaft transmits power to the power output shaft through the power transmission device to drive wheels to rotate. The transmission device can transmit power and achieve the larger deflection angle while transmitting power, and is reliable in operation. Meanwhile, the invention further provides a vehicle chassis provided with the angle-changeable transmission device. The vehicle chassis can achieve the functions of transverse traveling, four-wheel steering and on-site rotating and can improve high-speed stability and low-speed maneuverability of an automobile. The invention further provides a method for controlling the vehicle chassis to be steered under different conditions.
Owner:姚连涛
Electrooptic device
ActiveUS20090219378A1Efficient executionIncrease deflectionCombination recordingRecord information storageLight beamPrism
An electrooptic device having a simple structure that can efficiently increase deflection of a beam is provided. The device includes: an electrooptic crystal (11) having an electrooptic effect; an electrode pair of a positive electrode (12) and a negative electrode (13) for generating an electric field inside the electrooptic crystal; and a power source for applying a voltage between the electrode pair so as to generate a space charge inside the electrooptic crystal. With this arrangement, by using a simple structure, a change in a deflection angle is temporally rapid, and a large deflection angle that can not be obtained by a conventional electrooptic crystal prism can be acquired at a low applied voltage.
Owner:NIPPON TELEGRAPH & TELEPHONE CORP
Spatial light modulator and light field three-dimensional display system thereof
InactiveCN103777432AAchieve a large viewing angleLarge deflection angleNon-linear opticsOptical elementsSpatial light modulatorLarge deflection
The invention discloses a spatial light modulator and a light field three-dimensional display system thereof, belonging to the technical field of naked eye three-dimensional display. The spatial light modulator is implemented by adopting a two-dimensional array and an analog two-dimensional array consisting of a one-dimensional array and a one-dimensional scanning mechanical device connected with the one-dimensional array, and each pixel in the array is controlled by using a light ray deflector. The light field three-dimensional display system comprises a light source module and the spatial light modulator connected with the light source module. The spatial light modulator has the advantages of large deflection angle, high deflection accuracy and quick response, and light field three-dimensional display with a large visual angle, large representation depth and high resolution is realized.
Owner:SHANGHAI JIAO TONG UNIV
Puncture enhancing method and system
ActiveCN105496515AIncrease flexibilityReduce complexityUltrasonic/sonic/infrasonic diagnosticsSurgical needlesLarge deflectionUltrasound
Owner:SHENZHEN WISONIC MEDICAL TECH CO LTD
Prejudging method for static-test load carrying capacity of wing structure
ActiveCN105022907AMeet engineering design requirementsSpecial data processing applicationsJet aeroplaneCarrying capacity
The invention belongs to the technology of airplane structural strength and relates to a prejudging method for the static-test load carrying capacity of a wing structure. The prejudging method of the invention comprises the steps as follows: establishing a finite element model according to a wing structure before carrying out an actual test, and performing elastoplasticity and large deflection nonlinear finite element analysis to the model to obtain a wingtip deflection-load curve; determining maximum load carrying capacity of the wing structure according to the variation characteristic of the wingtip deflection-load curve and giving out the breaking load of the wing structure; obtaining a dangerous portion of the wing structure and the process form the unstable condition to the destructive condition and pre-judging the static-test load carrying capacity of the wing structure. According to the invention, the error between the calculated breaking load and the tested breaking load is 6.25 percent. The calculated dangerous part and the tested breaking portion are consistent. The calculated process form the unstable condition to the destructive condition is consistent with the tested unstable process. The method of the invention provides a guarantee for the one-time success of the static test of the structure and provides reference for evaluating the structural strength of the wing.
Owner:上海秦耀航空试验技术有限公司
Preparation method of ultrafine grain nickel base powder high temperature alloy
A preparation method of an ultrafine grain nickel base powder high temperature alloy belongs to the technical field of high temperature alloy. Pinning effect of crystal boundary gamma' particle during thermal deformation is utilized; powder high temperature alloy ingot is heated in air to a temperature 40-80 DEG C lower than a complete dissolving temperature of a gamma' hardening constituent thereof, treated with multiple heating quasi isothermal forging to reach a ingot accumulation deflection of higher than 75% and treated with recrystallization annealing to obtain a cake blank with uniform structure and grain size of grade 10-12. The invention has the following advantages: quasi isothermal forging with gross distortion of powder high temperature alloy can be realized to obtain ultrafine grain cake blank; production organization is simple and highly operational, so as to effectively solve a problem of processing powder high temperature alloy into uniform ultrafine grain by hot working; and produced cake blank has large deflection, so as to facilitate elimination of residual dendrite and original particle boundary in an isostatic pressing state tissue; product quality is good; production efficiency is high; and cost is low.
Owner:BEIJING CISRI GAONA TECH
Micro-mechanical element capable of derivation
ActiveCN101316789APiezoelectric/electrostrictive devicesFlexible microstructural devicesEngineeringTorsion spring
The invention relates to micromechanical elements which can be deflected, and which can preferably be deflected translationally, and possibly also in an oscillatory form. In comparison to known solutions, the object of the invention is to allow larger deflections, with better resistance at the same time to side forces and torques. In this case, suspension by at least one spring system is provided on elements according to the invention. Levers which are connected in an articulated manner to torsion spring elements are provided on spring systems. Torsion spring elements of a spring system are aligned on a common axis and / or on a plurality of axes which are aligned parallel to one another, and at least one torsion spring element is firmly clamped in.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
Fast reflection mirror
InactiveCN107942473ALarge deflection rangeHigh rotation accuracyMountingsMedical equipmentMeasuring instrument
The invention discloses a fast reflection mirror, comprising a base, a working mirror body, cross spring bearings and a driver; the working mirror body is assembled on a reflection mirror seat; two cross spring bearings constitute one group, there are totally two groups, wherein the axes of the two cross spring bearings in the first group of cross spring bearings coincide with a first straight line, and the axes of the two cross spring bearings in the second group of cross spring bearings coincide with a second straight line; the first straight line and the second straight line are perpendicular to each other and intersected at an origin; each cross spring bearing is connected to the reflection mirror seat and the base respectively; and the driver is used for driving the reflection mirrorseat to rotate within a preset angle range around the first straight line and / or the second straight line. According to the fast reflection mirror, the cross spring bearings support the reflection mirror seat, the cross spring bearings have the advantages of large deflection range and high rotating precision, and when the cross spring bearings are used with the driver, the deflection angle and therotating precision of the working mirror body can be improved, so that the fast reflection mirror is applicable in the fields of precision machinery, precision measuring instruments, medical equipment and the like.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Control mechanism for rapid deflection reflection mirror with rotation center arranged at reflection surface and method thereof
ActiveCN104849858AHigh control precisionReduce mistakesOptical elementsMechanical engineeringLarge deflection
The invention provides a control mechanism for a rapid deflection reflection mirror with the rotation center arranged at the reflection surface and a method thereof. The control mechanism comprises a first driving mechanism and a third driving mechanism which are arranged at the two ends of an X-axis of deflection and symmetrical about a Y-axis of deflection, and a second driving mechanism and a fourth driving mechanism which are arranged at the two ends of the Y-axis of deflection and symmetrical about the X-axis of deflection. The first driving mechanism is connected with a mirror supporting structure via a first flexible hinge perpendicular to the first driving mechanism. The structure and the size of the second driving mechanism, the third driving mechanism and the fourth driving mechanism are identical to those of the first driving mechanism, and the second driving mechanism, the third driving mechanism and the fourth driving mechanism are connected with the mirror supporting structure via a second flexible hinge, a third flexible hinge and a fourth flexible hinge respectively. The side surface of the reflection mirror is fixed on the mirror supporting structure. The mirror surface of the reflection mirror and the X-axis of deflection and the Y-axis of deflection are arranged in the same plane. The invention also provides a control method of the control mechanism. The control mechanism has relatively large deflection range and also has the characteristics of high response speed, small size and low weight.
Owner:XI AN JIAOTONG UNIV
Double-ball compensating joint
InactiveCN101949478ARigid enoughIncrease deflectionAdjustable jointsGeomorphologyCompensation effect
The invention discloses a double-ball compensating joint comprising a sphere casing and a sphere extension tube which are mutually sheathed. The sphere casing and the sphere extension tube extend with a spherical casing sphere and an extension tube spherical surface in opposite direction; the spherical casing and the sphere extension tube are mutually matched and connected with a spherical shell by a connecting piece; one section of the inner cavity of each spherical shell is in sphere matched with the corresponding casing sphere and the extension tube spherical surface; the sphere extension tube is arranged in the inner cavity of the sphere casing; a seal ring 2 is arranged between the sphere extension tube and the sphere casing; and the sphere extension tube is provided with an anti-dropping chuck connected with the sphere casing. The double-ball compensating joint not only ensures that the sphere extension tube and the sphere casing can move relative to the spherical shell, and realizes large deflection; the sphere extension tube and the sphere casing can move relative to obtain axial compensation effect. The invention not only has good sealing effect, improves deflection and can realize angle compensation and axial compensation.
Owner:WUXI JINYANG PIPING FITTING
Method for butting and synchronously unloading segments of steel truss structure in air
ActiveCN107143145ASolve problems that are difficult to control qualityRelease local internal forceBuilding material handlingShoresEngineeringStructure Collapse
The invention discloses a method for butting and synchronously unloading segments of a steel truss structure in the air. The method comprises the following steps: (1) manufacturing and mounting a temporary supporting frame; (2) manufacturing and mounting an operating platform; (3) manufacturing and mounting a scaffold; (4) hoisting a truss in position; (5) butting truss segments in the air and permanently fixing; (6) enabling a jack to be in position; (7) mounting a first U-shaped sleeve groove; (8) removing the scaffold, and mounting a lower bearing beam; (9) mounting a second U-shaped sleeve groove; (10) mounting a limiting steel pin rod and a limiting plate; and (11) unloading step by step. The method disclosed by the invention has the advantages that the problem that the quality is difficult to control when a long-span plane truss adopts a segmental mounting method is effectively solved, an unloading process is steady and controllable, the phenomena that the original structure produces larger deflection, local rod pieces are over-stressed, node connection is destroyed and even structure collapse is caused due to an improper unloading scheme can be avoided, and synchronous unloading of the truss structure is realized.
Owner:浙江中南绿建科技集团有限公司
Large-torque large-deflection-angle universal coupling testing stand
ActiveCN105738105ASimple structureEasy to operateMachine gearing/transmission testingCouplingSelf locking
The invention discloses a large-torque large-deflection-angle universal coupling testing stand which is applicable to testing of transmission capability, transmission efficiency and vibration performance of a universal coupling under large-torque condition when the input shaft and output shaft of the universal coupling have different deflection angles. A power device is fixedly installed on the stand body of the testing stand and connected with the input shaft of a transmission gear box through flanges, and the output shaft of the transmission gear box is connected with the input shaft of the universal coupling through flanges. The output shaft of the universal coupling is connected with a torque loader through flanges, and the torque loader is fixedly installed on the center line of a sector worm gear disc of a rotating angle adjusting device. The rotating angle scope of the testing stand is within +-45 degrees. When the testing stand conducts tests at a determined angle, the rotating angle adjusting device has self-locking function. A safe test process is thus ensured.
Owner:SHANDONG WANTONG HYDRAULIC
High specific gravity tungsten alloy material and preparation method thereof
The invention relates to a high specific weight tungsten alloy material and a preparation method thereof, and relates to a tungsten alloy material and a preparation method thereof. The invention solves the problems of poor plasticity, low strength, small deflection, large residual force of the prior high specific weight tungsten alloy product, and large equipment tonnage required, long demoulding time, tightly hermetical die and high cost in the method. The high specific weight tungsten alloy material is prepared by tungsten powder, nickel powder, iron powder and cobalt powder. The preparation method comprises the following steps: firstly, preparation of mixed powder A; secondly, preparation of a blank; thirdly, sintering of the blank; fourthly, preparation of mixed powder B; fifthly, preparation of a lubricating medium; and sixthly, acquisition of the high specific weight tungsten alloy material by placing the blank and the lubricating medium into the die for extrusion forming. The high specific weight tungsten alloy material has good plasticity, large strength, large deflection and small residual force. The preparation method is simple, has small equipment tonnage required, short demoulding time and low cost, and has no strict requirement on the die.
Owner:于洋
Bogie of railway vehicle and railway vehicle
InactiveCN101973280AImprove curve passabilityReduce wearBogie-underframe connectionsBogieEngineering
The invention provides a bogie of a railway vehicle and the railway vehicle. The bogie of the railway vehicle comprises two sets of wheel pairs, load bearing saddles arranged on the rotation shafts of the wheel pairs, and side frames arranged on two load bearing saddles at the same side. Elastic pads are arranged between the load bearing saddles and the side frames. The elastic pads are distributed around the upper surface and the side surface of the load bearing saddles. The bogie with the elastic pad structure having certain angle and large deflection can significantly enhance the curve negotiation performance of the bogie, reduce the abrasion of the wheel, realize the low driving power effect of the wheel track, and reduce the damage to the route.
Owner:CRRC QIQIHAR ROLLING CO LTD
Large-deflection self-adaptive seal for low-speed equipment
Owner:CHENGDU YITONG SEAL
Large deflection constrained insulation displacement terminal and connector
ActiveUS8708733B2Securing/insulating coupling contact membersContact members penetrating/cutting insulation/cable strandsMechanical engineeringNormal force
An improved insulation displacement terminal (IDT) includes opposed spaced fingers having outer edges with first and second abutment sections adjacent the ends of the outer edges. A resilient spring-like mid-section in the finger between the abutment sections applies a generally normal force to a wire captured between the inner edges of opposed fingers of the IDT. The resilient spring-like mid-section of each finger may be provided by narrowing the width of each finger between the abutment sections such as by recessing the outer edges from the outer edges of the abutment sections or by providing slots or openings in the mid-section of the fingers. Corners of inner edges of the fingers are smoother and inner edges are generally planar to provide a large contact area between the fingers and a wire disposed therebetween. The IDT is mounted within a housing to provide an insulation displacement connector (IDC).
Owner:INTERPLEX IND
Fine dried noodle bending and breaking rate measuring method and determinator based on axial compression amount
InactiveCN101451934ASimultaneous testingImplement testMaterial strength using steady bending forcesTesting foodAxial compressorAxial compression
The invention discloses a dried noodle bending fracture rate measuring method based on axial amount of compression and a goniophotometer. First dried noodles in certain number are extracted, cut into given length, separatively fixed between a static supporting baffle and a movable supporting baffle. Then a motor is started, for driving a stepless speed change device and a nut screw, the movable supporting baffle is pushed to cause the dried noodles to generate axial compression unstable bending; the size of axial amount of compression is read by a horizontal type electronic digital staff gauge. The dried noodle are broken when the axial amount of compression of the movable supporting baffle does not reach the given axial amount of compression, namely a bent fracture strip; percent of the number of bent fracture strip to the number of extracted ones is the dried noodle bending fracture rate. According to the invention, objective measurement is realized through mechanics of materials pressure lever stability principle and large-deflection theory and stress equivalence principle, the bending fracture rate is correctly measured, measurement is more scientific and precise.
Owner:JIANGSU UNIV
Method for measuring rotating shaft deflection
InactiveCN101285728AThe testing process is simpleEasy to testMachine bearings testingElasticity measurementLaser targetAngular deviation
The invention relates to a method for measuring the deflection of a rotating shaft. The method is characterized in that the method comprises the following steps of: arranging a reference laser and a moving laser on a neck journal of the rotating shaft and a pre-estimated point of the largest deflection of the rotating shaft respectively; rotating the rotating shaft at two same angles based on an initial position; and recording a parallel misalignment and an angular deviation of laser on a laser target every time, so that a vertical deviation and a vertical angular deviation of the center of a moving laser target relative to the center of a reference laser target can be measured. Deflections at the pre-estimated point of the largest deflection of the rotating shaft can be indirectly calculated through a measured value, and the largest deflection of the rotating shaft can be obtained by taking the maximum value in the deflections through multi-metering. The method has the advantages of simple and convenient measurement.
Owner:SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
Rolling oil composition for double frame reversible rolling mill
InactiveCN102492528AImprove the lubrication effectGood spreadabilityLubricant compositionLow speedPhosphoric acid
The invention discloses a rolling oil composition for a double frame reversible rolling mill. The rolling oil composition comprises, by weight, 70-95% of a polyol ester oiliness agent, 0-5% of a polyphosphate extreme pressure antiwear agent, 0.1-10% of a thioether extreme pressure antiwear agent, 0.1-5% of a metal deactivator, 0.1-3% of a free radical inhibitor, 0.1-15% of a fatty alcohol polyether surfactant, and 0.1-20% of a polysorbitol nonionic surfactant. The rolling oil composition, which specially aims at specific technological conditions of the double frame reversible rolling mill, such as characteristics of large reduction rate, much very thin plate production and the like, has good fluid lubrication, boundary lubrication and extreme pressure lubrication performances, has a wide mixed lubrication area window, and provides excellent lubrication performances during low speed rolling and high speed rolling, is suitable for rolling of high strength steels and large deflection requirements, and simultaneously has a good cleaning property.
Owner:SHANDONG IRON & STEEL CO LTD
Two-dimensional large-angle fast deflection reflector
The invention relates to a two-dimensional large-angle rapid deflection reflector. The reflector comprises a reflecting mirror assembly, a supporting assembly, a driving assembly, a sensor assembly and a base. The supporting assembly is a self-made ball bearing and can freely rotate around the sphere center of the supporting assembly; and the supporting assembly is pre-tightened through a conical spiral spring, so that the supporting assembly can be kept at an initial zero angle position without the driving of an external force. According to the driving assembly, four voice coil motors are adopted as driving components; the sphere centers of the voice coil motors are overlapped with the sphere center of the supporting assembly; the voice coil motors push the supporting assembly to perform two-dimensional rotation; and gaps between the magnetic steel and coils of the voice coil motors are always constant, and therefore, the magnetic steel will not collide with the coils, and relatively large deflection angles can be generated. The sphere centers of the supporting assembly and the driving assembly are located on the reflection surface of a plane reflecting mirror, so that the two mutually perpendicular deflection axes of the reflecting mirror are located on the surface of the reflecting mirror. In the fast deflecting process of the reflecting mirror, the translational movement of a reflection light beam caused by a condition that the deflection axes of a reflecting mirror are not overlapped with the surface of the reflecting mirror can be eliminated, and the control precision of the light beam is improved.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Lithographic apparatus and device manufacturing method utilizing a MEMS mirror with large deflection using a non-linear spring arrangement
InactiveUS20070236675A1Photomechanical apparatusPhotographic printingEngineeringMechanical engineering
An array of individually controllable elements for a lithographic apparatus comprise reflectors that can be actuated by an actuator and are biased to return to a given position by a force that varies non-linearly with the displacement of the reflector from that position.
Owner:ASML NETHERLANDS BV
Large-deflection microactuators
ActiveUS20130334928A1Piezoelectric/electrostriction/magnetostriction machinesPiezoelectric/electrostrictive devicesEngineeringLarge deflection
Actuators using piezoelectric drives, S-drives, or S-flexures are disclosed. The actuators can include S-drives connected in series to deflect substantially in a common deflection direction. The actuators can also include pairs of piezoelectric elements connected together for rotation in the plane of the pairs. An arm assembly and a forearm assembly can each have a plurality of S-flexures for deflection along substantially orthogonal axes.
Owner:PURDUE RES FOUND INC
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