Quigley Scientific: Analysis and Redesign of High Speed Circular Knitting Machine Component


Analysis and Redesign of High Speed Circular Knitting Machine Component


The analysis and redesign of circular knitting machine sinker component was completed for the highest speed machine in the world. The sinker in combination with the knitting needle complete the knitting operation. Detailed finite element analysis and fatigue analysis were completed to produce design curves for existing design variables and machine clearances. A new design was obtained from the historical data on previous design considerations by the client. The study reproduced the best attributes of the earlier designs and combined them to provide the required machine durability to exceed 10E9 cycles. Forensic studies from a surface scanning electron microscope were applied to the analysis. An in-house experiment was designed for validation.. The viability of the analysis based design solutions included specific manufacturablity specification in terms of tolerances on clearances to ensure the machine's required fatigue durability.

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