Mechanisms and mechanical devices sourcebook

... feed mechanisms Sclater Chapter 5 /3/ 01 10:20 AM Page 63 63 Sclater Chapter 64 5 /3/ 01 10:20 AM Page 64 Sclater Chapter 5 /3/ 01 10:20 AM Page 65 SEVEN LINKAGES FOR TRANSPORT MECHANISMS Transport mechanisms ... relative positions 72 Sclater Chapter 5 /3/ 01 10:20 AM Page 73 TRAVERSING MECHANISMS FOR WINDING MACHINES The seven mechanisms shown are parts of different yar...

Ngày tải lên: 22/10/2012, 14:26

... mesh with every lobe on gear 4, and T3/T4 = L3/L4 = 2/3, where T3 and T4 are the numbers of teeth on gears and T1 and T2 will denote the numbers of teeth on gears and 98 and S = ∆θ 3/θ30 Hence θ30(1 ... bottom of a tooth well and is in a position to prevent counter-rotation Sclater Chapter 5/3/01 10 :44 AM Page 97 ODD SHAPES IN PLANETARY GIVE SMOOTH STOP AND GO This interm...

Ngày tải lên: 22/10/2012, 14:26

... predict the existence of such mechanisms as the Bennett R-R-R-R mechanism, the double-ball joint R-S-S-R mechanism, and the R-CC-R mechanism (Fig 2) These “special” mechanisms require special geometric ... path Sclater Chapter 5/ 3/01 11: 45 AM Page 133 133 Sclater Chapter 5/ 3/01 11: 45 AM Page 134 TWELVE EXPANDING AND CONTRACTING DEVICES Parallel bars, telescoping slides,...

Ngày tải lên: 22/10/2012, 14:26

... Reciprocating linear force link: It reciprocates with one-, two-, or three-convolution air springs in a back-to-back arrangement Two- and three-convolution springs might need guides for their force ... Bearing adjustment This screw arrangement is a handy way for providing bearing adjustment and overload protection Rapid and slow feed With left- and right-hand threads, slide motion wit...

Ngày tải lên: 22/10/2012, 14:26

... circular arc 1-2 with center at 02, arc 34 with center at 03 , arc 4-5 with center at 01 , arc 5-6 with center at 04 , arc 7- 1 with center at 01 , and the straight lines 2-3 and 6 -7 The method ... links II and III come into toggle Sclater Chapter 5/3/01 12:33 PM Page 213 SIXTEEN LATCH, TOGGLE, AND TRIGGER DEVICES Diagrams of basic latching and quick-release mechani...

Ngày tải lên: 22/10/2012, 14:26

... Sclater Chapter 5/3/01 12:42 PM Page 2 48 RING DRIVES Ring -and- pulley drive (Fig 9) A thick steel ring in this drive encircles two variable-pitch (actually variable-width) pulleys A novel gear -and- linkage ... motor comparable in size and power to those used in standard reel-to-reel recorders, and a large bi-peripheral flywheel and sturdy capstan that reduces wow and flutter an...

Ngày tải lên: 22/10/2012, 14:26

... requirements of MIL-E-5400, class and MILK- 392 6 specifications Applications were seen in counter and reset switches and controls for machines and machine tools, radar systems, and precision potentiometers ... springs until they reach the “clutch-in” speed Fig Cam and Roller Clutch: This over-running clutch is better suited for higher-speed free-wheeling than a pawl -and- ratchet...

Ngày tải lên: 22/10/2012, 14:26

... light and second to light a red bulb and also sound an alarm bell Over-the-side or over-the-rear loading requires a different setting of the Bourdon pressure-gage unit than does over-the-front ... differentials and fluid velocities for their actuation Fig Auxiliary piston governor Fig Hit -and- miss governor 362 Fig Force-compensated regulator Sclater Chapter 10 5/3/01 1:08 PM Page...

Ngày tải lên: 22/10/2012, 14:26

... to a minimum This heavy-duty gear pump can be used at pressures up to 1,000 psi These pumps were made with either single- or double-end shafts and can be foot- or flange-mounted The drive shaft ... be driven clockwise or counter-clockwise The tube is completely encased and cannot expand beyond its original diameter The standard pump is made of bronze and will handle volumes to 15 gpm Th...

Ngày tải lên: 22/10/2012, 14:26

... here 447 Sclater Chapter 13 5/3/01 1:32 PM Page 448 DESIGN CURVES AND EQUATIONS FOR GEAR-SLIDER MECHANISMS What is a gear-slider mechanism? It is little more than a crank -and- slider with two ... resulting four-bar linkage will coordinate angular motions φ12 and 13 with ψ12 and 13 The procedure is: Fig Four-bar linkage synchronizes two angular movements, φ12 and 13, with ψ12,...

Ngày tải lên: 22/10/2012, 14:26

... system provides full three-axis inertial measurement, and does not require the manual assembly and alignment of sense axes A combined X- and Y-axis rate gyro and a Z-axis rate gyro was also designed ... elements and icons, and 2D drafting and detailing capability, which support design collaboration and compatibility among CAD, CAM, and computer-aided engineering (CAE) applic...

Ngày tải lên: 22/10/2012, 14:26

... Cataloging-in-Publication Data Sclater, Neil Mechanisms and mechanical devices sourcebook / Neil Sclater, Nicholas P Chironis.— 3rd ed p cm Rev ed of: Mechanisms & mechanical devices sourcebook ... and edited the Second Edition of Mechanisms and Mechanical Devices Sourcebook after the death of Mr Chironis The late Nicholas P Chironis developed the concept for Me...

Ngày tải lên: 22/10/2012, 14:26

... left-handed threads, • An eye on a shank with external righthanded threads, and • A flanged collar with left-handed external threads to mate with the shank of the firstmentioned eye, and right-handed ... Sclater Chapter 12 5/3/01 1:25 PM Page 415 415 Sclater Chapter 12 5/3/01 1:25 PM Page 416 DETENTS FOR STOPPING MECHANICAL MOVEMENTS Some of the more robust and practical devi...

Ngày tải lên: 22/10/2012, 14:26

... stepped-disk parts U-shaped parts pyrotechnic, power rack -and- pinion rotary-to-reciprocating in-line reciprocator track-switching scotch yoke rotation-to-translation scotch-yoke screw self-locking ... ball -and- screw bearings and roller belt belt -and- chain, variable speed cam for machine tools for tool-slide mechanism two-directional rack -and- gear Links 208 130 213 192 115 55 341 380...

Ngày tải lên: 22/10/2012, 14:27

... the cotton gin, and airplane were invented by self-trained engineers, scientists, and technicians By themselves, many of the mechanisms and devices described in this book are just mechanical curiosities, ... obsolete and unsuitable for new designs was deleted For example, clockwork mechanisms for timing, control, and display have almost universally been replaced in contempor...

Ngày tải lên: 22/10/2012, 14:27