Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001

6. LINKAGE SYNTHESIS

 

· The large number of possible ways to satisfy design criteria make it hard for us to select a single useful mechanism.

 

· The design techniques outlined below can help narrow down, or select a specific mechanism.

 

· To do the design work we typically begin with some functional specifications for a path of motion. These specifications typically include one or more of the following,

  1. - rotational motions (i.e. shaft)
  2. - differing advance/return times
  3. - small stop/dwell times
  4. - straight line segments in path
  5. - specific velocities along path
  6. - a curved path

 

· Some points of interest about the selection of linkages in design,

  1. - linkages can be used in place of cams to,
    1. reduce forces
    2. eliminate loading spring
    3. simplify manufacture and tolerance problems
  2. - the space required for these linkages may be larger than cams
  3. - in many cases ratios are specified. After we get these we will design the weakest member to be mechanically adequate, and then design the other parts.

 

 

6.1 SELECTION OF MECHANISM TYPES

6.2 DESIGN METHODS - SYNTHESIS

6.3 DESIGN METHODS - DIMENSIONAL

6.4 REFERENCES