US 2017/0043410 A1Published application

Replaceable cutting head having threaded mounting portion with two spaced apart conical abutment surfaces provided with the same cone angle, tool holder and rotary cutting tool

AssigneeIscar, Ltd.

InventorGIL HECHT

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Abstract

A replaceable cutting head includes a forward cutting portion and a rearward mounting portion. The mounting portion includes a male coupling member that protrudes rearwardly from a head base surface. The male coupling member includes forward and rearward bearing portions and an external thread located therebetween. The forward and rearward bearing portions include respective conically shaped forward and rearward head abutment surface. The forward and rearward head abutment surfaces have the same cone angle. When a cutting tool, including said cutting head and a tool holder having a female coupling member, is in a locked position, the external thread is threadingly engaged in the female coupling member and the forward and rearward head abutment surfaces conically abut corresponding conical shaped surfaces in the female coupling member.

Claims29

Dependent claims

A replaceable cutting head (22), for rotary cutting operations, having a head longitudinal axis (A) around which the replaceable cutting head (22) rotates in a direction of rotation (R), the head longitudinal axis (A) extending in a forward (DF) to rearward direction (DR), comprising:

a forward portion forming a cutting portion (26) and a rearward portion forming a mounting portion (28), wherein;
the mounting portion (28) comprises a male coupling member (38) protruding rearwardly from a rearwardly facing head base surface (40), the head base surface (40) extending transversely with respect to the head longitudinal axis (A), and defining a boundary between the cutting portion (26) and the mounting portion (28), the male coupling member (38) comprising:
outwardly facing forward and rearward bearing portions (50, 52) and an external thread (42) located therebetween wherein;
the forward bearing portion (50) comprises a conically shaped forward head abutment surface (54) that tapers inwardly in a rearward direction (DR) defining a forward head cone angle (α);
the rearward bearing portion (52) comprises a conically shaped rearward head abutment surface (56) that tapers inwardly in a rearward direction (DR) defining a rearward head cone angle (β);
and
the forward and rearward head cone angles (α, β) have the same value.

4 more elements

Dependencies are inferred from the claim text.