Cam Systems for Needle Control in Knitting
topic
Knitting machine cam systems guide needle butt movement through defined vertical displacement profiles that raise needles for yarn intake, advance them to clearing height, descend through the draw-down zone to form the loop, and hold at the welt position for miss action, with cam geometry and surface hardness determining the precision and durability of needle path control across millions of needle cycles per operating hour.
Role
Controls the needle position trajectory during each knitting cycle that determines loop formation geometry and stitch length through the cam groove profile that the needle butt follows, with cam wear causing progressive trajectory deviation that increases loop length variation and fabric quality deterioration requiring cam replacement at defined wear limits to maintain fabric quality within specification.