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US 5,112,162 AGranted
Thread milling cutter assembly
AssigneeAdvent Tool and Manufacturing, Inc.
InventorsJames T. Hartford, Laszlo Frecska
Life of this patent
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AssigneeAdvent Tool and Manufacturing, Inc.
InventorsJames T. Hartford, Laszlo Frecska
Estimating the term…
A cutting tool comprised of tool hardened steel having a holder end and an opposite end. A series of axially extending slots are provided on the tool at an outer circumference of the opposite end. The slots each have a radially extending slot wall positioned so as to extend in a plane that intersects a longitudinal axis of the opposite end. Each of the slots also have a generally radially and diagonally extending slot wall confronting the radially extending slot wall associated therewith. Jig ground pins mounted in the opposite end and extended across a radially inner end of the associated slot. A series of cutter bits are mounted in the slots and bottomed on the jig ground pins positioned at the radially inner end of the associated slot. A series of cutter bits with one of the bits in each of the said slots. A series of wedge shaped shims each being mounted in an associated one of the slots and physically positioned in engagement with and between the radially and diagonally extending slot wall associated therewith and one of the cutter bits. Screws are screwed into the opposite end of the tool and which bear against the shims locking the shims and the blades in the slots in unitary assembly therewith.
A cutting tool comprised of tool hardened steel having a holder end and an opposite end, a series of axially extending slots at an outer circumference of said opposite end, said slots each having a radially extending slot wall positioned so as to extend in a plane that intersects a longitudinal axis of said opposite end, each of said slots also having a generally radially and diagonally extending slot wall confronting said radially extending slot wall associated therewith, jig ground pins mounted in said opposite end and extended across a radially inner end of the associated slot, a series of cutter bits mounted in said slots and bottomed on said jig ground pins positioned at the radially inner end of the associated slot, a series of wedge shaped shims each being mounted in an associated one of said slots and physically positioned in engagement with and between said radially and diagonally extending slot wall associated therewith and one of said cutter bits for asserting pressure against the bits to hold the bits against leading sides of said slots, and screws screwed into said opposite end of the tool and which bear against said shims locking the shims and the blades in said slots in unitary assembly therewith.
A cutting tool comprised of tool hardened steel having a holder end and an opposite end, a series of axially extending slots at an outer circumference of said opposite end, said slots each having a radially extending slot wall positioned so as to extend in a plane that intersects a longitudinal axis of said opposite end, each of said slots also having a generally radially and diagonally extending slot wall confronting said radially extending slot wall associated therewith, jig ground pins mounted in said opposite end and extended across a radially inner end of the associated slot, a series of cutter bits mounted in said slots and bottomed on said jig ground pins positioned at the radially inner end of the associated slot, a series of wedge shaped shims each being mounted in an associated one of said slots and physically positioned in engagement with and between said radially and diagonally extending slot wall associated therewith and one of said cutter bits, and screws screwed into said opposite end of the tool and which bear against said shims locking the shims and the blades in said slots in unitary assembly therewith, said opposite end of the tool has a set of axially spaced holes at an outer circumference of the opposite end which holes are formed in part in the opposite end and also in the shim, the holes each being adapted to receive one of said screws so that the associated shim can be wedged against the associated cutter bit when threaded in place.
A cutting tool comprised of tool hardened steel having a holder end and an opposite end, a series of radially outwardly opening axially extending wedge shaped slots at an outer circumference of said opposite end, said slots each including inwardly converging forward and rearward slot walls, jig ground pins mounted in said opposite end and each extended across a radially inner end of the associated slot, a series of cutter bits mounted in said slots and bottomed on said jig ground pins positioned at the radially inner end of the associated slot and being engaged against said forward slot wall, a series of wedge shaped shims each being mounted in an associated one of said slots and physically positioned in engagement between said rearward slot wall and one of said cutter bits, and screws screwed into said opposite end of the tool and which bear against said shims locking the shims and the blades in said slots in unitary assembly therewith so that said blade is firmly bottomed upon the associated jig ground pin.
Dependencies are inferred from the claim text.