Machine cutting tool
AssigneeISCAR Hartmetall Gesellschaft mit beschrankter Haftung
InventorKlaus Kemmer
Life of this patent
Estimating the term…
Abstract
A machine cutting tool comprising a holder into which replaceable cutting inserts may be inserted in a self-gripping manner. The holder and cuttng inserts each have two contact surfaces opposite each other of an approximate circular form about the center of rotation of the cuttng insert. When in working position, the contact surfaces are developed complementary to one another and provided with guides. The cutting insert can be inserted into the holder with its narrow side and can be securely locked by turning it in the direction of the force acting on the cutting edge during operation. A detachment of the cutting insert during operation is impossible. The cutting insert preferably has two diametrically opposite cutting edges.
Claims11
A machine cutting tool comprising replaceable cutting inserts (4) and a holder (2) for a self-gripping attachment of said cutting insert (4), two seat jaws opposite each other, contact surfaces (6) which are formed complementary to opposite when in working position, contact surfaces (9) of said cutting insert (4), and convex or concave guide means (7), (12) in the contact surfaces, characterized in that said cutting insert is insertable into said holder (2) by being turned about an axis M parallel to a cutting edge (5) in the direction of the forces acting on said cutting edge (5), the contact surfaces (6) have the shape of an approximate circular arc about the center of rotation M of said cutting insert (4) whose distance (10,11) from the center of rotation decreases in the direction of turning, and there is provided an insert groove (8) in the depth of said holder (2) between said contact surfaces (6) and a flat segment (13) at the cutting insert (4) which is adjacent to said contact surfaces (9).
Dependencies are inferred from the claim text.