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US 5,395,186 AGranted
Milling cutter having insert-carrying cartridges
AssigneeSandvik AB
InventorIngemar Qvart
Life of this patent
Estimating the term…
Abstract
A milling cutter includes a rotary body and a plurality of recesses spaced around its outer periphery for receiving insert-carrying cartridges. Each cartridge is wedge-shaped and is retained in place by a clamping wedge which is fastened in the respective recess by a clamp screw. Each cartridge has serrations on its rear surface which engage corresponding serrations on the rearward wall of the recess. A locating pin extends between a wall of the recess and a surface of the cartridge. The cartridge carries a spring which is compressed by the clamping wedge such that the spring biases the cartridge against the rearward wall of the recess.
Claims22
A rotary milling cutter comprising:
- a generally disk-shaped cutter body defining a longitudinal rotary axis, said body including an outer periphery having a plurality of circumferentially spaced, radially outwardly open recesses, each recess having a forward wall and an opposing rearward wall disposed rearwardly thereof with reference to a direction of rotation of said body during a milling operation, said rearward wall including a series of serrations extending generally parallel to said longitudinal axis,
- cartridges disposed in respective recesses, each cartridge including a seat for a cutting insert, and front and rear support surfaces, said rear support surface including serrations engaged with said serrations of said rearward wall, said front surface being convergent with respect to said rear surface in a radially inward direction to define therewith a wedge-shaped cartridge portion having a wedge angle of about 10-35 degrees,
- clamping wedges disposed in respective recesses for wedgingly clamping respective cartridges, each clamping wedge engaging said forward wall of its respective recess and said front surface of its respective cartridge, and
- clamp screws extending through respective clamping wedges and being threadingly received in said body for holding said clamping wedges in clamping engagement with said cartridges.
1 more element
A rotary milling cutter comprising:
- a generally disk-shaped cutter body defining a longitudinal rotary axis, said body including an outer periphery having a plurality of circumferentially spaced, radially outwardly open recesses, each recess having a forward wall and an opposing rearward wall disposed rearwardly thereof with reference to a direction of rotation of said body during a milling operation, said rearward wall including a series of serrations extending generally parallel to said longitudinal axis,
- cartridges disposed in respective recesses, each cartridge including a seat for a cutting insert, and front and rear support surfaces, said rear support surface including serrations engaged with said serrations of said rearward wall, said front surface being convergent with respect to said rear surface in a radially inward direction to define therewith a wedge-shaped cartridge portion,
- clamping wedges disposed in respective recesses for wedgingly clamping respective cartridges, each clamping wedge engaging said forward wall of its respective recess and said front surface of its respective cartridge,
- clamp screws extending through respective clamping wedges and being threadingly received in said body for holding said clamping wedges in clamping engagement with said cartridges, and
- a spring disposed in each cartridge and arranged to be compressed by a respective clamping wedge such that said spring biases said cartridge against said rearward wall.
2 more elements
A rotary milling cutter comprising:
- a generally disk-shaped cutter body defining a longitudinal rotary axis, said body including an outer periphery having a plurality of circumferentially spaced, radially outwardly open recesses, each recess having a forward wall and an opposing rearward wall disposed rearwardly thereof with reference to a direction of rotation of said body during a milling operation, said rearward wall including a series of serrations extending generally parallel to said longitudinal axis,
- cartridges disposed in respective recesses, each cartridge including a seat for a cutting insert, and front and rear support surfaces, said rear support surface including serrations engaged with said serrations of said rearward wall, said front surface being convergent with respect to said rear surface in a radially inward direction to define therewith a wedge-shaped cartridge portion,
- clamping wedges disposed in respective recesses for wedgingly clamping respective cartridges, each clamping wedge engaging said forward wall of its respective recess and said front surface of its respective cartridge, and
- clamp screws extending through respective clamping wedges and being threadingly received in said body for holding said clamping wedges in clamping engagement with said cartridges,
- said body including threaded bores for receiving respective clamp screws, each clamping wedge including a threaded bore for receiving a clamp screw, a longitudinal axis of each threaded bore of said body forming an angle of about 1-5 degrees with a longitudinal axis of said threaded bore of its respective clamping wedge when said clamping wedge is attached to said body by its respective clamp screw.
2 more elements
A rotary milling cutter comprising:
- a generally disk-shaped cutter body defining a longitudinal rotary axis, said body including an outer periphery having a plurality of circumferentially spaced, radially outwardly open recesses, each recess having a forward wall and an opposing rearward wall disposed rearwardly thereof with reference to a direction of rotation of said body during a milling operation, said rearward wall including a series of serrations extending generally parallel to said longitudinal axis, each recess including a bottom wall located at a radially inner end of said recess,
- cartridges disposed in respective recesses, each cartridge including a seat for a cutting insert, and front and rear support surfaces, said rear support surface including serrations engaged with said serrations of said rearward wall, said front surface being convergent with respect to said rear surface in a radially inward direction to define therewith a wedge-shaped cartridge portion, each cartridge including a bottom surface facing said bottom wall of its respective recess,
- clamping wedges disposed in respective recesses for wedgingly clamping respective cartridges, each clamping wedge engaging said forward wall of its respective recess and said front surface of its respective cartridge,
- clamp screws extending through respective clamping wedges and being threadingly received in said body for holding said clamping wedges in clamping engagement with said cartridges, and
- locating pins extending between said body and respective cartridges, each locating pin extending between said bottom wall of its respective recess and said bottom surface of its respective cartridge.
2 more elements
A rotary milling cutter comprising:
- a generally disk-shaped cutter body defining a longitudinal rotary axis, said body including an outer periphery having a plurality of circumferentially spaced, radially outwardly open recesses, each recess having a forward wall and an opposing rearward wall disposed rearwardly thereof with reference to a direction of rotation of said body during a milling operation, said rearward wall including a series of serrations extending generally parallel to said longitudinal axis, said body including a central bore,
- cartridges disposed in respective recesses, each cartridge including a seat for a cutting insert, and front and rear support surfaces, said rear support surface including serrations engaged with said serrations of said rearward wall, said front surface being convergent with respect to said rear surface in a radially inward direction to define therewith a wedge-shaped cartridge portion,
- clamping wedges disposed in respective recesses for wedgingly clamping respective cartridges, each clamping wedge engaging said forward wall of its respective recess and said front surface of its respective cartridge, and
- clamp screws extending through respective clamping wedges and being threadingly received in said body for holding said clamping wedges in clamping engagement with said cartridges, a longitudinal axis of each clamp screw intersecting a wall of said bore at a reference point and forming an angle of about 10-25 degrees with a radius of said body intersecting said reference point.
1 more element
Dependencies are inferred from the claim text.