Device for the machining of tube ends

An apparatus for machining an end of a tube having an axis extending therethrough comprising:

• a tool head having a face side and being mounted rotatable about the axis of the tube;
• a plurality of slide bars movably arranged about said face side of said tool head in a direction radial to the tube axis;
• a tool connected to a respective one of said plurality of slide bars;
• a plurality of push rods uniformly distributed about the tube axis and each of said plurality of push rods including a first end, a second end, and first oblique toothing positioned proximate said first end;
• a frame connected to said second end of each of said plurality of push rods and being displaceable with said push rods along the tube axis;
• and
• transmission means for imparting radial movement to both said plurality of slide bars and said tools upon axial movement of said plurality of push rods, said transmission means being connected to said plurality of slide bars and including an outer surface and second oblique toothing positioned about said outer surface, said second oblique toothing corresponding to and disposed for engaging said first oblique toothing on said plurality of push rods, said transmission means including a plurality of cam spindles, each cam spindle being rotatably mounted to said tool head and including a toothed outer side engaging said first oblique toothing of a respective one of said plurality of push rods to form a push rod-cam spindle pair;
• said cam spindles being rotatable about an axis of rotation extending radially from said axis;
• and further comprising a cam portion angularly extending from and at least partially about each of said cam spindles and engaging a respective one of said plurality of slide bars for imparting radial movement thereto.

An apparatus for machining an end of a tube having an axis extending therethrough comprising:

• a tool head having a face side and being mounted rotatable about the axis of the tube;
• a plurality of slide bars movably arranged about said face side of said tool head in a direction radial to the tube axis;
• a tool connected to a respective one of said plurality of slide bars;
• a plurality of push rods uniformly distributed about the tube axis and each of said plurality of push rods including a first end, a second end, and first oblique toothing positioned proximate said first end;
• a frame connected to said second end of each of said plurality of push rods and being displaceable with said push rods along the tube axis;
• transmission means for imparting radial movement to both said plurality of slide bars and said tools upon axial movement of said plurality of push rods, said transmission means being connected to said plurality of slide bars and including an outer surface and second oblique toothing positioned about said outer surface, said second oblique toothing corresponding to and disposed for engaging said first oblique toothing on said plurality of push rods;
• and, at least one adjustable spring system connected to balance differential forces due to varying radial displacement of said plurality of slide bars and centrifugal forces due to rotation of said tool head.