By G. Pritschow (auth.), C. R. Boër MAS, PhD, L. Molinari-Tosatti PhD, K. S. Smith (eds.)
Parallel Kinematic Machines (PKMs) are some of the most radical options in construction apparatus. They try and mix the dexterity of robots with the accuracy of computer instruments to answer numerous commercial wishes. This e-book includes the lawsuits of the 1st European-American discussion board on Parallel Kinematic Machines, held in Milan, Italy from 31 August - 1 September 1998. The discussion board was once validated to supply associations, expertise providers and commercial finish clients with a much better realizing of the true benefits to be received from utilizing PKMs. This ebook contributes to a mid-term method orientated to minimize time to marketplace and prices, increase creation flexibility and reduce environmental affects to extend around the globe competitiveness. specifically the authors specialise in allowing applied sciences and rising strategies for destiny production functions of PKMs. themes contain: present prestige of PKM R&D in Europe, the united states and Asia. business specifications, roadblocks and alertness possibilities. study concerns and probabilities. commercial purposes and requirements.
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Subsequent meetings have been held at NIST in March 1997, the American Society of Mechanical Engineers (ASME) International Mechanical Engineering Conference and Exhibition (lMECE) in November 1997, Sandia National Laboratories in June 1998, and the Ingersoll Milling Machine Tool Company in September 1998. These informal meetings provide valuable opportunities to share PKM experiences, results, ideas, and plans for future investigations, as well as to identify industry needs and concerns. Of course, hexapod machine tool development also draws on work in parallel kinematic mechanisms (largely for robotics applications) performed at a number of universities and other organizations long before the HUG was formed.
4,4 5,3 6,2 5,5,5 6,5,4 6,6,3 6,6,5,5 6,6,6,4 6,6,6,6,5 6,6,6,6,6,6 Table 1 - Classification of spatial parallel manipulators Degrees of Sum of all Connectivity freedom jOintfreedoms listing Systematic Enumeration of Parallel Manipulators _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 43 Hence, the degrees of freedom associated with all the joints of a limb should be equal to five. Let revolute, prismatic, universal, and spherical joints be the applicable joint types. A combinatorial analysis yields thirteen feasible kinds of limbs which can be categorized into two types as listed in Table 2.
In: Proc. ASPE 13 th Annual Meeting, St. Louis, MO, October 25-30, pp 312-315 11. Rudder F F 1996 Static structural analysis of a reconfigurable rigid platform supported by elastic legs. NIST Internal Report 5885, June 12. 54-1992 1993 Methods for performance evaluation of computer controlled machining centers. ASME, New York 13. Clinton C M, Zhang G, Wavering A J 1997 Stiffness modeling of a Stewart platform-based milling machine. Trans. of the North American Manufacturing Research Institution of SME, Volume XXV, Lincoln, NB, May 20-23, pp 335-340 Parallel Kinematic Machine Research at NIST: Past, Present, and Future _ _ _ _ _ _ _ _ _ 31 14.