Cutting insert kit, method for manufacturing cutting inserts and a cutting insert for a cutting insert kit
AssigneeSandvik Intellectual Property AB
InventorDaniel Edler
Life of this patent
Estimating the term…
Abstract
A cutting insert kit, including a base part formed of a brittle and wear-resistant material, and a plurality of cutting insert blanks integrally formed with the base part, which are separable one by one from the base part via indications of fracture. Each insert blank includes a front end portion, a rear end portion, an upper side, an under side, and at least one cutting edge in the front end portion formed between a clearance surface and one of the upper and under sides. The base part is common to all cutting insert blanks and to which each cutting insert blank is united to the base part via an indication of fracture in the form of a weakened connection member between the base part and the rear end portion of the cutting insert blank.
Claims16
A cutting insert kit, comprising:
- a base part formed of a brittle and wear-resistant material;
- and
- a plurality of cutting insert blanks integrally formed with the base part, which are separable one by one from the base part via indications of fracture, each insert blank including a front end portion, a rear end portion, an upper side, an under side, and at least one cutting edge in the front end portion formed between a clearance surface and one of the upper and under sides,
- wherein the base part is common to all cutting insert blanks and to which each cutting insert blank is united to the base part via an indication of fracture in the form of a weakened connection member between the base part and the rear end portion of the cutting insert blank.
A method of manufacturing cutting inserts for chip removing machining, comprising:
- forming a base part of a brittle and wear-resistant material;
- forming a plurality of cutting insert blanks integrally with the base part, which are separable one by one from the base part via indications of fracture;
- forming each insert blank to include a front end portion, a rear end portion, an upper side, an under side, and at least one cutting edge in the front end portion formed between a clearance surface and one of the upper and under sides;
- forming the base part common to all cutting insert blanks such that each cutting insert blank is united to the base part only via an indication of fracture in the form of a weakened connection member between the base part and the rear end portion of the cutting insert blank;
- and
- separating at least one cutting insert from the base part by fracturing the weakened connection member,
- wherein a fracture surface, provided by separation of the cutting insert from the base part, is only present in the rear end portion of the cutting insert blank.
The cutting insert for chip removing machining, comprising:
- a front end portion, a rear end portion, an upper side, an under side, and at least one cutting edge in the front end portion formed between a clearance surface and one of the upper and under sides;
- wherein a fracture surface, provided by separation of the cutting insert from a cutting insert kit, is only present in the rear end portion of the cutting insert,
- wherein the rear end portion of the cutting insert includes an end surface which extends between upper and lower borderlines and a pair of side borderlines,
- wherein a first cutting edge is in the transition between the clearance surface and the upper side, and a second cutting edge is in the transition between the clearance surface and the under side, and
- wherein the fracture surface is situated nearer one of the upper and lower borderlines than the other.
Dependencies are inferred from the claim text.