Mechanisms And Mechanical Devices ...

Mechanisms And Mechanical Devices Sourcebook, Mechanika

[ Pobierz całość w formacie PDF ]
//-->CONTENTSPREFACEACKNOWLEDGMENTSCHAPTER 1 MOTION CONTROL SYSTEMSMotion Control Systems OverviewGlossary of Motion Control TermsHigh-Speed Gearheads Improve Small Servo PerformanceModular Single-Axis Motion SystemsMechanical Components Form Specialized Motion-Control SystemsServomotors, Stepper Motors, and Actuators for Motion ControlServosystem Feedback SensorsSolenoids and Their Applicationsxiiixv129101213142229CHAPTER 2 ROBOT MECHANISMSIndustrial RobotsFANUC Robot SpecificationsMechanism for Planar Manipulation With Simplified KinematicsTool-Changing Mechanism for RobotPiezoelectric Motor in Robot Finger JointSix-Degree-of-Freedom Parallel MinimanipulatorSelf-Reconfigurable, Two-Arm Manipulator With BracingImproved Roller and Gear Drives for Robots and VehiclesAll-Terrain Vehicle With Self-Righting and Pose Control33343843444546474849CHAPTER 3 PARTS-HANDLING MECHANISMSMechanisms That Sort, Feed, or WeighCutting MechanismsFlipping MechanismsVibrating MechanismSeven Basic Parts SelectorsEleven Parts-Handling MechanismsSeven Automatic-Feed MechanismsSeven Linkages for Transport MechanismsConveyor Systems for Production MachinesTraversing Mechanisms for Winding MachinesVacuum Pickup Positions PillsMachine Applies Labels from Stacks or RollersHigh-Speed Machines for Adhesive ApplicationsAutomatic Stopping Mechanisms for Faulty Machine OperationElectrical Automatic Stopping MechanismsAutomatic Safety Mechanisms for Operating Machines5152565858596062656873757576828890CHAPTER 4 RECIPROCATING AND GENERAL-PURPOSEMECHANISMGears and Eccentric Disk Combine in Quick IndexingTimung Belts, Four-Bar Linkage Team Up for Smooth IndexingModified Ratchet DriveOdd Shapes in Planetary Give Smooth Stop and GoCycloid Gear Mechanism Controls Stroke of PumpConverting Rotary-to-Linear MotionNew Star Wheels Challenge Geneva Drives for Indexing939495969799100100viiGeneva MechanismsModified Geneva DrivesIndexing and Intermittent MechanismsRotary-to-Reciprocating Motion and Dwell MechanismsFriction Devices for Intermittent Rotary MotionNo Teeth on These RatchetsCam-Controlled Planetary Gear System103106108116122124125CHAPTER 5 SPECIAL-PURPOSE MECHANISMSNine Different Ball Slides for Linear MotionBall-Bearing Screws Convert Rotary to Linear MotionThree-Point Gear/Leadscrew PositioningUnique Linkage Produces Precise Straight-Line MotionTwelve Expanding and Contracting DevicesFive Linkages for Straight-Line MotionLinkage Ratios for Straight-Line MechanismsLinkages for Other MotionsFive Cardan-Gear MechanismsTen Ways to Change Straight-Line DirectionNine More Ways to Change Straight-Line DirectionLinkages for Accelerating and Decelerating Linear StrokesLinkages for Multiplying Short MotionsParallel-Link MechanismsStroke MultiplierForce and Stroke MultipliersStroke-Amplifying MechanismsAdjustable-Stroke MechanismsAdjustable-Output MechanismsReversing MechanismsComputing MechanismsEighteen Variations of Differential LinkageSpace MechanismsSeven Popular Types of Three-Dimensional DrivesInchworm Actuator127128130131132134136138139140142144146148150150152154155156158159163165167172CHAPTER 6 SPRING, BELLOW, FLEXURE, SCREW, ANDBALL DEVICESFlat Springs in MechanismsPop-Up Springs Get New BackboneTwelve Ways to Put Springs to WorkOverriding Spring Mechanisms for Low-Torque DrivesSpring Motors and Typical Associated MechanismsFlexures Accurately Support Pivoting Mechanisms and InstrumentsTaut Bands and Leadscrew Provide Accurate Rotary MotionAir Spring MechanismsObtaining Variable Rates from SpringsBelleville SpringsSpring-Type Linkage for Vibration ControlTwenty Screw DevicesTen Ways to Employ Screw MechanismsSeven Special Screw ArrangementsFourteen Adjusting DevicesLinear Roller Bearings Are Suited for High-Load, Heavy-Duty Tasks173174176177179181183185186188189190191194195196197CHAPTER 7 CAM, TOGGLE, CHAIN, AND BELT MECHANISMSCam BasicsCam-Curve Generating Mechanisms199200201viiiFifteen Ideas for Cam MechanismsSpecial-Function CamsCam Drives for Machine ToolsToggle Linkage Applications in Different MechanismsSixteen Latch, Toggle, and Trigger DevicesSix Snap-Action MechanismsEight Snap-Action DevicesApplications of the Differential Winch to Control SystemsSix Applications for mechanical Power AmplifiersVariable-Speed Belt and Chain DrivesGetting in Step With Hybrid BeltsChange Center Distance Without Affecting Speed RatioMotor Mount Pivots for Controlled TensionBushed Roller Chains and Their AdaptationsSix Ingenious Jobs for Roller ChainSix More Jobs for Roller ChainMechanisms for Reducing Pulsations in Chain DrivesSmoother Drive Without Gears207209210211213215217219221224227231231232234236238240CHAPTER 8 GEARED SYSTEMS AND VARIABLE-SPEEDMECHANISMSGears and GearingNutating-Plate DriveCone Drive Needs No Gears or PulleysVariable-Speed Mechanical DrivesUnidirectional DriveMore Variable-Speed DrivesVariable-Speed Friction DrivesVariable-Speed Drives and TransmissionsPrecision Ball Bearings Replace Gears in Tiny Speed ReducersMultifunction Flywheel Smoothes Friction in Tape Cassette DriveControlled Differential DrivesTwin-Motor Planetary Gears Provide Safety Plus Dual-SpeedHarmonic-Drive Speed ReducersFlexible Face-Gears Make Efficient High-Reduction DrivesCompact Rotary SequencerPlanetary Gear SystemsNoncircular GearsSheet-Metal Gears, Sprockets, Worms, and RatchetsHow to Prevent Reverse RotationGear-Shift ArrangementsShifting Mechanisms for Gears and ClutchesFine-Focus AdjustmentsRatchet-Tooth Speed-Change DriveTwinworm Gear DriveCompliant Gearing for Redundant Torque DriveLighter, More-Efficient Helicopter TransmissionsWorm Gear With Hydrostatic EngagementStraddle Design of Spiral Bevel and Hypoid Gears241242243244245253254256258260261262263263266267268275279281282284286287287289290290292CHAPTER 9 COUPLING, CLUTCHING, AND BRAKING DEVICESCoupling of Parallel ShaftsNovel Linkage Couples Offset ShaftsDisk-and-Link Coupling Simplifies TransmissionsInterlocking Space-Frames Flex as They Transmit Shaft TorqueOff-Center Pins Cancel Misalignment of ShaftsHinged Links and Torsion Bushings Give Drives a Soft Start293294295296297299300ixUniversal Joint Relays Power 45° at Constant SpeedsBasic Mechanical ClutchesSpring-Wrapped Slip ClutchesControlled-Slip Concept Adds New Uses for Spring ClutchesSpring Bands Grip Tightly to Drive Overrunning ClutchSlip and Bidirectional Clutches Combine to Control TorqueWalking Pressure Plate Delivers Constant TorqueConical-Rotor Motor Provides Instant Clutching or BrakingFast-Reversal Reel DriveSeven Overrunning ClutchesSpring-Loaded Pins aid Sprags in One-Way ClutchRoller-Type ClutchOne-Way Output From Speed ReducersSprings, Shuttle Pinion, and Sliding Ball Perform in One-Way DrivesDetails of Overriding ClutchesTen Ways to Apply Overrunning ClutchesApplications for Sprag-Type ClutchesSmall Mechanical Clutches for Precise ServiceMechanisms for Station ClutchesTwelve Applications for Electromagnetic Clutches and BrakesTrip Roller ClutchGeared Electromechanical Rotary JointTen Universal Shaft CouplingsMethods for Coupling Rotating ShaftsLinkages for Band Clutches and BrakesSpecial Coupling MechanismsLink Coupling Mechanisms301302304306307308309310310311312312313314316318320322324326328329330332336337338CHAPTER 10 TORQUE-LIMITING, TENSIONING, ANDGOVERNING DEVICESCaliper Brakes Help Maintain Proper Tension in Press FeedSensors Aid Clutch/BrakesWarning Device Prevents Overloading of BoomConstant Watch on Cable TensionTorque-Limiters Protect Light-Duty DrivesLimiters Prevent OverloadingSeven Ways to Limit Shaft RotationMechanical Systems for Controlling Tension and SpeedDrives for Controlling TensionSwitch Prevents Overloading of a HoistMechanical, Geared, and Cammed Limit SwitchesLimit Switches in MachineryAutomatic Speed GovernorsCentrifugal, Pneumatic, Hydraulic, and Electric GovernorsSpeed Control Devices for MechanismsFloating-Pinion Torque Splitter339340340341341342343346348352355356358362364366367CHAPTER 11 PNEUMATIC AND HYDRAULIC MACHINE ANDMECHANISM CONTROLDesigns and Operating Principles of Typical PumpsRotary-Pump MechanismsMechanisms Actuated by Pneumatic or Hydraulic CylindersFoot-Controlled Braking SystemLinkages Actuate Steering in a TractorFifteen Jobs for Pneumatic PowerTen Ways to Use Metal Diaphragms and CapsulesDifferential Transformer Sensing DevicesHigh-Speed CountersDesigning With Permanent Magnets369370374376378378379380382384385x [ Pobierz całość w formacie PDF ]

zanotowane.pl

doc.pisz.pl

pdf.pisz.pl

sylwina.xlx.pl