Comparison of heald frame motion generated by rotary dobby and crank & cam shedding motions


Eren R. , Ozkan G., Karahan M.

FIBRES & TEXTILES IN EASTERN EUROPE, vol.13, no.4, pp.78-83, 2005 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 4
  • Publication Date: 2005
  • Title of Journal : FIBRES & TEXTILES IN EASTERN EUROPE
  • Page Numbers: pp.78-83
  • Keywords: rotary dobby, cam shedding motion, crank shedding motion, weaving, weaving machine

Abstract

Mechanism models are introduced for rotary dobby, crank & cam shedding motions. Equations governing heald frame motion are derived. Heald frame motion curves are obtained and compared with each other. It is shown that higher heald frame maximum velocity & maximum acceleration, as well as a longer approximate heald frame dwell, are generated by the rotary dobby rather than the crank or cam shedding motions, due to the intermittent nature of the rotary dobby shaft motion.