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THEORY OF MACHINES AND MECHANISMS

John J. Uicker, Jr. / Gordon R. Pennock Copyright © 2011 by Oxford University Press, Inc.Joseph E. Shigley

Figure 1.21 Coupling mechanisms for intersecting shafts.



Figure 1.22 Six-bar stop-and-dwell mechanism.



Figure 1.23 A set of coupler curves. (Reproduced by permission of the publishers, The Technology Press, MIT, Cambridge, MA, andWiley, New York, from J. A. Hrones and G. L. Nelson, Analysis of the Four-Bar Linkage, 1951.)



Figure 1.24 Straight-line mechanisms: (a) Watt’s linkage, (b) Roberts’ mechanism, (c) Chebychev linkage, and (d) Peaucillier inversor.



Figure 1.25 Scott–Russell exact straight-line mechanism; AB = AP = O2A



Figure 1.26 The pantograph linkage.



Figure 1.27 Four inversions of the slider-crank mechanism.



Figure 1.28 Four inversions of the Grashof chain: (a, b) crank-rocker mechanisms, (c) draglink mechanism, and (d) double-rocker mechanism.



Figure 1.29 (a) Eq. (1.7): s + l + p < q and the links cannot be connected; (b) Eq. (1.8): s + l − p > q and s is incapable of rotation; (c) Eq. (1.9): s+q+p < l and the links cannot be connected; (d) Eq. (1.10): s+q−p < l and s is incapable of rotation.



Figure 1.30 Example 1.6. A planar four-bar linkage.