Mechanisms and Mechanical Devices Sourcebook - Chapter 9
Mechanisms and Mechanical Devices Sourcebook - Chapter 9
... ofMIL-E-5400, class 3 and MILK- 392 6specifications.Applications were seen in counter andreset switches and controls for machinesand machine tools, radar systems, andprecision potentiometers.Eight-Joint ... Rzappa-type jointto get the desired effect.Ball -and- socket. Basically, the True-Speed joint is a system of ball -and- socket connections with large contactareas (low unit pressure) t...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 3
... CHAPTER 3PARTS-HANDLINGMECHANISMSSclater Chapter 3 5/3/01 10: 19 AM Page 51 5 2MECHANISMS THAT SORT, FEED,OR WEIGHORIENTING DEVICESHere’s a common problem; Parts arrive in either open-end ... action can subject them to rela-tively severe loads. The tumbling can help to remove sharp burrs.59Sclater Chapter 3 5/3/01 10: 19 AM Page 59 ELEVEN PARTS-HANDLING MECHANISMS6 0Gravity feed fo...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 4
... 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 ... smoothness and flexibil-ity in converting constant rotary motioninto a start -and- stop type of indexing.It works equally well for high-speedoperations, as fast as 2 seconds per cycle,including index...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 5
... belt, steel band, or rope around the drum is fastened to the drivingand driven members; sprocket-wheels and chain can replace the drum and belt.Fig. 9 Matching gear-segments.Fig. 10 Racks and coupled ... inven-tors include Evans, Tchebicheff, Roberts ,and Scott-Russell.Four-bar arrangement. Like othermechanisms that aim at straight-linemotion, the Daniel design is based on thecommon...
Ngày tải lên: 22/10/2012, 14:26
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 ... stictionless and neg-ligible hysteresis characteristics. Thebearing is radiation-resistant and can beused in high vacuum conditions or inenvironments where there is dirt andcontaminati...
Ngày tải lên: 22/10/2012, 14:26
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 ... frequentlyemployed in automatic-feed mechanismsand screw machines They are the circular,constant-velocity, simple-harmonic,cycloidal, modified cycloidal, and circu-...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 8
... 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, 3,1 39, 771, 3,1 39, 772, and 3, 590 ,6 59) have been ... control radial position andtherefore control the orbit. Ring and sundisks are spring-loaded.DISK DRIVESSclater Chapter 8 5/3/01 12:42 PM Page 247 248Ring -and- pulley drive (Fig....
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 10
... CHAPTER 10TORQUE-LIMITING,TENSIONING, ANDGOVERNING DEVICESSclater Chapter 10 5/3/01 1:07 PM Page 3 39 340CALIPER 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...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 11
... steel, monel, andbronze for handling acids, oils, and sol-vents. The impeller is made of pressure-vulcanized laminated layers of Hycar, 85 to90 percent hard. Sand, grit, scale andfibrous materials ... wear. In oper-ation, the tip of the bucket is in light con-tact with the casing wall. Liquids aremoved by sucking and pushing actionsand are not churned or foamed.4. HIGH-PRESSURE, high-volu...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 13
... CHAPTER 13KEY EQUATIONS ANDCHARTS FOR DESIGNINGMECHANISMSSclater Chapter 13 5/3/01 1:31 PM Page 4 29 430FOUR-BAR LINKAGES AND TYPICAL INDUSTRIAL APPLICATIONSAll mechanisms can ... GEARED FIVE-BAR MECHANISMSGeared five-bar mechanisms offer excellent force-transmission characteristics and can producemore complex output motions—including dwells—than conventional four-bar mechanisms...
Ngày tải lên: 22/10/2012, 14:26