By Lung-Wen Tsai
Normally, mechanisms are created by way of designer's instinct, ingenuity, and adventure. even though, such an advert hoc process can't make sure the identity of all attainable layout possible choices, nor does it unavoidably bring about optimal layout. Mechanism layout: Enumeration of Kinematic buildings based on functionality introduces a technique for systematic construction and class of mechanisms. With a in part analytical and in part algorithmic technique, the writer makes use of graph idea, combinatorial research, and desktop algorithms to create kinematic constructions of an identical nature in a scientific and impartial demeanour. He sketches mechanism constructions, comparing them with appreciate to the remainder useful standards, and offers various atlases of mechanisms that may be used as a resource of principles for mechanism and computer design.He bases the publication at the concept that a number of the sensible specifications of a wanted mechanism should be remodeled into structural features that may be used for the enumeration of mechanisms. the main tricky challenge such a lot mechanical designers face on the conceptual layout part is the production of layout possible choices. Mechanism layout: Enumeration of Kinematic buildings in line with functionality offers you with a strategy that isn't to be had in the other source.
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Additional info for Mechanism Design: Enumeration of Kinematic Structures According to Function (Mechanical and Aerospace Engineering Series)
Example text
Gear 2 meshes with gear 3, whereas link 1 serves as the carrier. Together, they form a one-dof gear train. In the side view of a gear pair, we use two short parallel lines to indicate the gear mesh. These two gear sets are different in design. However, their structural topologies are identical, to some extent, as will be described in the following section. 4 Functional schematics of two gear sets that share the same structural topology. 3 Structural Representation In a structural representation, each link of a mechanism is denoted by a polygon whose vertices represent the kinematic pairs.
23a and b. 23 Two (7, 10) rooted graphs. 6 Let thin edges denote the arcs and heavy edges denote the chords. 24a and b. 24 (7, 9) and (8, 11) rooted graphs. 20a and b. 21a and b. 1 Introduction The kinematic structure of a mechanism contains the essential information about which link is connected to which other link by what type of joint. The kinematic structure of a mechanism can be represented in several different ways. Some methods of representation are fairly straightforward, whereas others may be rather abstract and do not necessarily have a one-to-one correspondence.
For example, two gears keyed together on a common shaft to form a compound gear set will be treated as one link. 1 A basic planetary gear train. 2 Functional Schematic Representation Functional schematic representation refers to the most familiar cross-sectional drawing of a mechanism. Shafts, gears, and other mechanical elements are drawn as such. For clarity and simplicity, only those functional elements that are essential to the structural topology of a mechanism are shown. Two functional schematics representing different physical embodiments might sometimes share the same structural topology.