Cutting tool and cutting insert with a rearward resilience slit
AssigneeIscar, Ltd.
InventorGil Hecht
Life of this patent
Estimating the term…
Abstract
A cutting insert has a head portion and a coupling portion protruding rearwards from the head portion, along a longitudinal insert axis. The head portion has a base surface at a rearward end thereof, defining a base plane, and two major surfaces. A coupling portion rear surface is longitudinally spaced apart from the base surface and a cylindrical coupling peripheral surface extends between the coupling portion rear surface and the base surface. A resilience slit has two opposite inner walls converging forwards towards a slit inner end terminating at a slit inner end plane. The slit inner end plane is parallel to the base plane and spaced apart therefrom by a longitudinal distance. The inner walls of the resilience slit form an acute slit angle therebetween.
Claims22
A cutting insert (102), having a longitudinal insert axis (A) extending in a forward (DF) to rearward direction (DR), comprising:
- a head portion (104) having two opposing major surfaces (106) and a head peripheral surface (108) extending therebetween, the head peripheral surface (108) including a base surface (110) at a rearward end (112) of the head portion (104), the base surface (110) defining a base plane (P1) perpendicular to the insert axis (A);
- and
- a coupling portion (116) protruding rearwards from the base surface (110) along the insert axis (A), the coupling portion (116) comprising:
- a rear surface (118) spaced apart from the base surface (110) along the insert axis (A) and a cylindrical coupling peripheral surface (120) extending therebetween, the coupling peripheral surface (120) intersecting with the base surface (110) at a transition area (122);
- and
- a resilience slit (124) extending from the rear surface (118) in the forward direction (DF) and opening out to the coupling peripheral surface (120), the resilience slit (124) having two opposite inner walls (131) converging in the forward direction (DF) towards a slit inner end (126) which terminates at a slit inner end plane (P2) perpendicular to the insert axis (A),
- wherein:
- the slit inner end plane (P2) is spaced apart from the base plane (P1) by a longitudinal distance (D);
- and
- the inner walls (131) of the resilience slit (124) form a first acute slit angle (α1) therebetween.
Dependencies are inferred from the claim text.