Cutting tool and a process for making such a cutting tool
AssigneeIscar, Ltd.
InventorAmos Shavit
Life of this patent
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Abstract
A cutting tool having a monolithic construction includes an injection molded shank, and an extruded fluted portion extending forwardly from the shank, the shank and the fluted portion having a monolithic construction. The process for making the cutting tool includes forming a cutting tool green body by injection molding a shank of the green body and extruding a fluted portion of the green body such that the shank and the fluted portion have a monolithic construction; and then sintering the cutting tool green body.
Claims25
A process for making a cutting tool having a shank (60) and a fluted portion (64), comprising:
- forming a cutting tool green body by:
- injection molding, into a cavity, a shank of the green body;
- and
- extruding, through a die, a fluted portion of the green body while separating the die and the cavity, such that the shank and the fluted portion have a monolithic construction;
- and
- sintering the cutting tool green body.
A process for making a cutting tool having a shank (60) and a fluted portion (64), comprising:
- providing an injection and extrusion system (10) comprising:
- a fixed portion (20);
- and
- a movable portion (22) that contacts the fixed portion (20) and is capable of moving away from the fixed portion (20) along a bidirectional movement direction (M);
- wherein:
- one of the fixed and movable portions comprises a die (30) having a die bore (34) with a longitudinal axis (A), the die bore facing along the movement direction (M);
- and
- the other of the fixed and movable portions comprises a cavity insert (46) having a longitudinal axis (B) and an insert bore (52) that faces the die bore (34);
- forming a cutting tool green body by:
- (i) injecting molten tool material (38) through the die bore and into the insert bore, thus forming a shank (60) of the cutting tool green body;
- (ii) moving the movable portion away from the fixed portion, and, simultaneously, extruding molten tool material through the die bore, thus forming a desired length (L) of a fluted portion (64) of the cutting tool green body, such that the shank and the fluted portion have a monolithic construction;
- and
- (iii) cutting the fluted portion;
- and
- sintering the cutting tool green body.
A process for making a cutting tool green body having a shank and a fluted portion, comprising:
- injection molding, into a cavity, a shank of the green body;
- and
- extruding, through a die, a fluted portion of the green body while separating the die and the cavity, such that the shank and the fluted portion have a monolithic construction.
Dependencies are inferred from the claim text.