Cnc slitter machine

A machine for slitting a metal sheet comprising:

• a frame;
• an upper arbor mounted for rotation In the frame;
• a lower arbor mounted for rotation in the frame;
• a drive motor operably coupled to the upper and the lower arbors for rotation of the upper and lower arbors;
• a plurality of knife assemblies supported for movement along the upper and lower arbors such that a first knife assembly is supported for movement along the upper arbor and a second knife assembly Is supported for movement along the lower arbor,
• a plurality of rotary knives each being mounted in one of the knife assemblies and driven by one of the upper and lower arbors;
• wherein the knives of the first and second knife assemblies cooperate to slit the metal sheet passing through a nip between the knives of the respective knife assemblies;
• an upper knife assembly positioning device including a pair of oppositely disposed contact members operable to releasably grasp each of the first knife assemblies for movement of the first knife assemblies along the upper arbor, ‘a lower knife assembly positioning device Including a pair of oppositely disposed contact members operable to releasably grasp each of the second knife assemblies for movement of the second knife assemblies along the lower arbor;
• a first drive mechanism associated with the upper knife assembly positioning device and operable to move the first knife assemblies along the upper arbor;
• and
• a second drive mechanism associated with the lower knife assembly positioning device and operable to move the second knife assemblies along the lower arbor.