Swiss turning insert, swiss tool holder and assembly

A swiss turning tool assembly comprising:

• an insert devoid of a clamping through hole;
• and
• a tool holder;
• the insert comprising:
• opposite rake and insert base surfaces and an insert flank surface connecting the rake and insert base surfaces;
• a cutting edge formed along at least a portion of an intersection of the insert flank surface and the rake surface;
• and
• an insert clamping arrangement in turn comprising a first insert abutment surface forming an internal acute angle with the insert base surface;
• the tool holder comprising:
• opposite front and rear tool ends;
• opposite upper and lower tool sides connecting the front and rear tool ends;
• opposite first and second flank tool sides connecting the front and rear tool ends and the upper and lower tool sides;
• an elongated shank portion defining a tool elongation axis;
• and
• a head portion connected to the shank portion;
• the head portion comprising:
• an insert pocket;
• a fastener hole having a fastener hole axis and extending through at least one of the first and second flank tool sides, the fastener hole opening out to a pocket opening in the insert pocket;
• and
• a single fastener configured to bring the insert into a clamped position on the insert pocket;
• the insert pocket comprising a tool clamping arrangement which in turn comprises:
• a tool base surface;
• and
• a first tool abutment surface forming an external acute angle with the tool base surface;
• wherein:
• the fastener is configured to occupy the fastener hole and protrude into the insert pocket via said pocket opening and abut the insert to bring the tool and insert clamping arrangements into a clamped position;
• and wherein, in the clamped position:
• the fastener abuts the insert;
• the first tool abutment surface abuts the first insert abutment surface;
• and
• the tool base surface abuts the insert base surface.