Replaceable cutter blade

A replaceable cutter insert for securing to the periphery of a carrier wheel, said cutter comprising:

• a central main body portion having a central opening adapted to receive fastening means for removably securing said insert to said carrier wheel;
• a cylindrically shaped depending flange portion integrally formed in said main body portion of said cutter insert for accurately locating said cutter insert when said cutter insert is secured to said carrier wheel, said depending flange portion being internally threaded and spaced from the peripheral edge of said main body portion and having a thickness substantially equal to the thickness of said main body portion;
• elongated edge means provided at one end of said cutter insert;
• and
• piercing corner edge means provided at opposite ends of said elongated edge means, said piercing corner edge means being operative to initially pierce a workpiece being machined by said cutter insert.

A replaceable cutter insert for securing to the periphery of a carrier wheel, said cutter comprising:

• a central main body portion having a central opening adapted to receive fastening means for removably securing said insert to said carrier wheel;
• a depending flange portion integrally formed in said main body portion of said cutter insert for accurately locating said cutter insert when said cutter insert is secured to said carrier wheel, said depending locating flange being frusto conical in cross-sectional shape and being spaced from the peripheral edge of said main body portion and having a thickness substantially equal to the thickness of said main body portion;
• elongated edge means provided at one end of said cutter insert;
• and
• piercing corner edge means provided at opposite ends of said elongated edge means, said piercing corner edge means being operative to initially pierce a workpiece being machined by said cutter insert.

A cutting wheel for use in machining elastomeric materials comprising:

• a carrier wheel;
• a plurality of mounting seats positioned in spaced relationship around the periphery of said wheel, each of said mounting seats including a generally planar surface having a fastener receiving opening therein;
• a plurality of removable cutter inserts, one of said cutter inserts being positioned on each of said mounting seats, each of said cutter inserts including a main body portion, an elongated cutting edge extending generally parallel to the axis of rotation of said wheel and piercing corner edge means positioned at opposite ends of said elongated cutting edge, said corner edge means having an acute included angle, each of said cutter inserts further including integrally formed depending flange means spaced from the periphery of said cutter insert and cooperating with said opening to accurately locate said cutter inserts on said seats whereby said elongated cutting edges are positioned substantially along the periphery of a circle having a center coaxial with the axis of rotation of said carrier wheel, said depending flange means and said main body portion are of substantially the same material thickness,
• means spaced from said depending flange means for preventing relative rotation of said cutter insert with respect to said carrier wheel;
• and
• fastener means for securing said cutter inserts to said mounting seats.