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US 6,273,649 B1Granted
Cutting tool assembly
OwnerKarl Zieglerinventor
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OwnerKarl Zieglerinventor
Estimating the term…
A cutting tool assembly which includes a shank (1) and a removable cartridge (3) on which is mounted a cutting insert (5). The shank (1) is for mounting the assembly on a cutting machine. The cartridge (3) is removably mounted by a screw fastener (7) which passes through a hole in shank (1) into a threaded hole (31) in cartridge (3). The shank includes a recess (9) having sloping facing walls (15, 17) for engaging a complementary seating portion, having sloping walls (25, 27), of cartridge (3). The recess (9) and complementary seating portion of the cartridge are shaped such that the cartridge is wedged in the recess when the screw fastener (7) is tightened. The invention allows a reduction in costs by providing for the exchange of cartridges rather than a whole cutting tool. The wedging interconnection of the cartridge and shank ensures rigidity of the assembly. A modification is described wherein a recess for a screw fastener is provided instead of a hole (23) which allows for quick exchange of cartridges.
a cutting tool assembly including, a shank for mounting the cutting tool assembly on a cutting machine, a cartridge which is mountable on the shank, a cutting means on the cartridge, and releasable screw means for securing the cartridge on the shank, wherein the shank includes a seating portion for engaging the cartridge and the cartridge includes a complementary seating portion for engaging the shank, wherein each seating portion is defined by planar surfaces which converge such that one seating portion is an extending bearing part and the other is a recess within which the bearing part wedges on tightening the screw means to secure the cartridge on the shank, the screw means being positioned to act in a direction towards which the planar surfaces converge to increase the wedging of the bearing part in the recess, whereby substantially all cutting forces are transmitted from the cartridge to the shank via the wedged seating portions.
A cutting tool, comprising:
Dependencies are inferred from the claim text.