Mechanisms and Mechanical Devices Sourcebook - Chapter 3
Mechanisms and Mechanical Devices Sourcebook - Chapter 3
... feed mechanisms. Sclater Chapter 3 5 /3/ 01 10:20 AM Page 6263Sclater Chapter 3 5 /3/ 01 10:20 AM Page 63 64Sclater Chapter 3 5 /3/ 01 10:20 AM Page 6465SEVEN LINKAGES FOR TRANSPORTMECHANISMSFig. ... CHAPTER 3PARTS-HANDLINGMECHANISMSSclater Chapter 3 5 /3/ 01 10:19 AM Page 515 2MECHANISMS THAT SORT, FEED,OR WEIGHORIENTING DEVICESHere’s a common problem; Parts arrive in either open-end ... ofa lever, and is removed from the chute by a vibrat-ing table.Sclater Chapter 3 5 /3/ 01 10:19 AM Page 6061Pin inserter. Pins, supplied from the parts-feeder, are raised to a ver-tical position...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 4
... time, assum-ing a uniform rotation of the arm 5. For thegears shown, S = 1. From the geometry,( 30 + ∆ 30 )L3= 36 0ºandS = ∆ 3/ 30 Hence 30 (1 + S)L3= 36 0ºFor S = 1 and L3+ 2, 30 = 90 and 3= 90ºNow ... lobe ongear 3 must mesh with every lobe on gear4, and T3/T4= L3/L4= 2 /3, where T3andT4are the numbers of teeth on gears 3and 4. T 1and T2will denote the numbersof teeth on gears 1 and 2.Next, ... CHAPTER 4RECIPROCATING ANDGENERAL-PURPOSEMECHANISMSSclater Chapter 4 5 /3/ 01 10:44 AM Page 93 An ingenious intermittent mechanismwith its multiple gears, gear racks, andlevers provides...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 5
... 5 /3/ 01 11:45 AM Page 132 133 Sclater Chapter 5 5 /3/ 01 11:45 AM Page 133 134 TWELVE EXPANDING AND CONTRACTING DEVICESParallel bars, telescoping slides, and other devices that can spark answers to ... one branch of thefigure-8 curve is straighter than the other. It is straight-est when a/b equals (arm 2)/(arm 1).Sclater Chapter 5 5 /3/ 01 11:45 AM Page 136 137 Fig. 3 Four-bar linkage produces ... tilting and uncertaintyin the distance between the plates). Otherprior mechanisms relied on spring load-ing, differential multiple-point drives andother devices to reduce backlash. In pro-viding...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 6
... A standard rotat-ing-air fitting is required.Reciprocating linear force link: It recipro-cates with one-, two-, or three-convolutionair springs in a back-to-back arrangement.Two- and three-convolution ... CHAPTER 6SPRING, BELLOW,FLEXURE, SCREW, ANDBALL DEVICESSclater Chapter 6 5 /3/ 01 12:24 PM Page 1 73 FLAT SPRINGS IN MECHANISMS1 74Constant force is approached because of the length of this U-spring. ... stictionless and neg-ligible hysteresis characteristics. Thebearing is radiation-resistant and can beused in high vacuum conditions or inenvironments where there is dirt andcontamination.185TAUT BANDS AND...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 7
... composedof circular arc 1-2 with center at 02, arc 3- 4 with center at 03, arc 4-5 with center at01, arc 5-6 with center at 04, arc 7-1 withcenter at 01, and the straight lines 2 -3 and6 -7 . The method calls ... links II and III come into toggle.Sclater Chapter 7 5 /3/ 01 12 :33 PM Page 212213SIXTEEN LATCH, TOGGLE, AND TRIGGER DEVICESDiagrams of basic latching and quick-release mechanisms. Fig. 1 Cam-guided ... formachining circular-arccams. Radii r 2and r5areturned on a lathe; hard-ened templates areadded to r1, r3, and r4forfacilitating hand filing.Sclater Chapter 7 5 /3/ 01 12 :33 PM Page 204205Fig....
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Mechanisms and Mechanical Devices Sourcebook - Chapter 8
... cams. During nuta-tion the nutator is held from rotating by the stator, which trans-mits the reaction forces to the housing.* Four U.S. patents (3, 094,880, 3, 139 ,771, 3, 139 ,772, and 3, 590,659)have ... rela-tion to the ball plate. The conical cavi-ties, as well as the ball, have hardenedsurfaces, and the drive operates in an oilbath.250Sclater Chapter 8 5 /3/ 01 12: 43 PM Page 250251Ball -and- disk ... speeds and 3% slip at lowspeeds.MULTIPLE DISK DRIVESSclater Chapter 8 5 /3/ 01 12: 43 PM Page 251252Variable-stroke drive (Fig. 20). Thisdrive is a combination of a four-bar link-age with a one-way...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 9
... ofMIL-E-5400, class 3 and MILK -3 9 26specifications.Applications were seen in counter andreset switches and controls for machinesand machine tools, radar systems, andprecision potentiometers.Eight-Joint ... offset-angle(7) β = 54.7 where: Maximum permissible offset-angle (simplified)(8) β/d = 10 9. CT n1 /3 0.3x=1x=nlxSS∑−−112()bdTECn22e0 .3 13/ σnT0.71/3bdTE22 13/ TE 13/ dTbE 13/ Ebtdn309.Critical ... opposing faces of the housing to drive it .30 3Fig. 9 Cam and Roller Clutch: This over-running clutch is bettersuited for higher-speed free-wheeling than a pawl -and- ratchet clutch.The inner driving member...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 10
... CHAPTER 10TORQUE-LIMITING,TENSIONING, ANDGOVERNING DEVICESSclater Chapter 10 5 /3/ 01 1:07 PM Page 33 9 34 0CALIPER BRAKESHELP MAINTAINPROPER TENSIONIN PRESS FEEDA simple cam -and- linkage ... warning light and second tolight a red bulb and also sound an alarmbell.Over-the-side or over-the-rear loadingrequires a different setting of theBourdon pressure-gage unit than doesover-the-front loading. ... ten-sion on the cable, and the pivoting of thelever gives a direct reading with a straingage.Sclater Chapter 10 5 /3/ 01 1:07 PM Page 34 1 34 2TORQUE-LIMITERS PROTECT LIGHT-DUTY DRIVESLight-duty...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 11
... 1 ,30 0rpm by a steam turbine.Sclater Chapter 11 5 /3/ 01 1:15 PM Page 37 3 37 4ROTARY-PUMP MECHANISMSFig. 1 (A) A Ramelli pump with spring-loaded vanes to ensure con-tact with the wall; vane ends are ... rpm, can deliver up to 55gpm, and will operate against 25 psi. It oper-ates at temperatures between 0 and 160 F.Sclater Chapter 11 5 /3/ 01 1:15 PM Page 37 2 13. HIGH-VACUUM PUMPS operate withthe ... CHAPTER 11PNEUMATIC ANDHYDRAULIC MACHINEAND MECHANISMCONTROLSclater Chapter 11 5 /3/ 01 1:15 PM Page 36 9 37 0DESIGNS AND OPERATING PRINCIPLES OF TYPICAL PUMPSThese...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 13
... stationary.Sclater Chapter 13 5 /3/ 01 1 :32 PM Page 433 434 Designing Geared Five-Bar Mechanisms (continued )Fig. 4 Typical B-curve shapes obtained from various Type-5 geared five-bar mechanisms. Theshape ... CHAPTER 13KEY EQUATIONS ANDCHARTS FOR DESIGNINGMECHANISMSSclater Chapter 13 5 /3/ 01 1 :31 PM Page 429 430 FOUR-BAR LINKAGES AND TYPICAL INDUSTRIAL APPLICATIONSAll mechanisms can ... here.447Sclater Chapter 13 5 /3/ 01 1 :32 PM Page 447448DESIGN CURVES AND EQUATIONS FOR GEAR-SLIDER MECHANISMSWhat is a gear-slider mechanism? It islittle more than a crank -and- slider withtwo...
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