Knitting machine

Abstract

A cam for a circular knitting machine has at least one cam groove formed in a cam surface to receive and guide a foot of a stitch-forming tool with which the cam is intended to operate. Additional recesses are formed in the cam surface to reduce the striking surface between the cam surface and a shank of the stitch-forming tool.

What is claimed is: 
     
         1 . A cam fore circular knitting machine, comprising:
 at least one cam groove formed in a cam surface to receive and guide a foot configured on a stitch-forming tool, with which stitch-forming tool the cam is intended to operate; and   one or more recesses formed in the cam surface to reduce a striking surface between the cam surface and a shank of the stitch-forming tool.   
     
     
         2 . The cam according to  claim 1 , wherein the one or more recesses embody channels or grooves that extend in a running direction of a stitch-forming tool with which the cam is intended to operate. 
     
     
         3 . The cam according to  claim 2 , wherein the channels or grooves extend parallel to the at least one cam groove. 
     
     
         4 . The cam according to  claim 1 , wherein the cam further comprises an oil outlet nozzle and wherein one or more recesses are channels or grooves that extend in a star shape from the cam oil nozzle. 
     
     
         5 . The cam according to  claim 1 , wherein the one or more recesses are intersecting grooves or channels. 
     
     
         6 . The cam according to  claim 1  wherein the one or more recesses are cylindrical, arrow-shaped or trough-shaped in configuration. 
     
     
         7 . The cam according to  claim 1 , wherein the depth of the one or more recesses varies in a running direction of stitch-forming tools with which the cam is intended to operate. 
     
     
         8 . The cam according to  claim 1 , wherein the cam surface between the one or more recesses is convex at least in regions. 
     
     
         9 . The cam according to  claim 1 , wherein the cam is formed by a base plate, on which at least one shell part forming the cam surface is arranged. 
     
     
         10 . The cam according to  claim 1 , wherein one or more stitch-forming tools which are intended to be guided in the at least one cam groove are any of the group of stitch-forming tools consisting of needles, control sinkers, down sinkers, swivel sinkers, spring sinkers, spring pins, intermediate pins and jack selectors. 
     
     
         11 . Stitch-forming tool configured for operation with a cam for a circular knitting machine, the stitch-fitting tool comprising a shank having a foot and a flat projection;
 wherein the cam comprises
 at least one cam groove formed in a cam surface to receive and guide the foot of the stitch-forming tool; and 
 one or more recesses formed in the cam surface to reduce a striking surface between the cam surface and the shank of the stitch-forming tool that embody channels or grooves that extend in a running direction of the stitch-forming tool; 
 wherein the channels or grooves extend parallel to the at least one cam groove and wherein the flat projection inserted into one of the grooves or channels. 
   
     
     
         12 . The stitch-forming tool according to  claim 11 , wherein the cam is formed by a base plate, on which at least one shell part forming the cam surface is arranged and wherein the projection runs in the groove or channel without touching.