ROTARY CUTTING TOOL WITH INCREASED STIFFNESS AND METHOD OF ASSEMBLING SAME
First Claim
1. A rotary cutting tool, comprising:
- a cutter body having a forward end, a rearward end, the cutter body including a head, a shank, and a cavity extending from the rearward end toward the forward end along a central, longitudinal axis of the cutter body, the cavity having threads at one end thereof, the head including at least one cutting insert mounted in a pocket adjacent to at least one chip groove; and
a stiffening device including a first compression screw threaded into the rearward end and a plurality of cylindrical slugs with high compressive strength disposed within the cavity,wherein the stiffening device increasing the stiffness of the cutting tool when the first compression screw is threaded into the rearward end of the cutting tool.
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Accused Products
Abstract
A rotary cutting tool includes a cutter body having a head, a shank, and a cavity extending along a central, longitudinal axis of the cutter body. The head includes at least one cutting insert mounted in a pocket adjacent to a chip groove. A stiffening device includes a plurality of slugs with high compressive strength disposed within the cavity, and a first compression screw threaded into a rearward end of the cutting tool. In another embodiment, a second compression screw is threaded into a forward end of the cutter body. In another embodiment, each slug includes a coolant hole, circumferential grooves and axial grooves on its outer diameter, and a plurality of radial grooves on each end, and the first compression screw has a coolant hole for allowing coolant to pass therethrough.
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Citations
14 Claims
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1. A rotary cutting tool, comprising:
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a cutter body having a forward end, a rearward end, the cutter body including a head, a shank, and a cavity extending from the rearward end toward the forward end along a central, longitudinal axis of the cutter body, the cavity having threads at one end thereof, the head including at least one cutting insert mounted in a pocket adjacent to at least one chip groove; and a stiffening device including a first compression screw threaded into the rearward end and a plurality of cylindrical slugs with high compressive strength disposed within the cavity, wherein the stiffening device increasing the stiffness of the cutting tool when the first compression screw is threaded into the rearward end of the cutting tool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A rotary cutting tool, comprising:
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a cutter body having a forward end, a rearward end, the cutter body including a head, a shank, and a cavity extending from the rearward end toward the forward end along a central, longitudinal axis of the cutter body, the cavity having threads at both ends thereof, the head including at least one cutting insert mounted in a pocket adjacent to at least one chip groove; and a stiffening device including a first compression screw threaded into the rearward end, a second compression screw threaded into the forward end, and a plurality of cylindrical slugs with high compressive strength disposed within the cavity between the first compression screw and the second compression screw, wherein the stiffening device increasing the stiffness of the cutting tool when the first compression screw is threaded into the rearward end of the cutting tool and the second compression screw is threaded into the forward end of the cutting tool. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification