1 Scope
This document specifies the dimensions of polygonal taper receivers with flat contact
surface (PTI). These receivers are the machine-side part of the interface to the (in
cutting process non-rotating) tool carrier of machine tools (e.g. turret lathes, turning
centres).
This document specifies four types of machine-side interface types, which differ at
the face contact. The bores for receiving the tool shanks themselves are designed
identically for all types.
Receiver type F has one hole for the coolant supply (F = fluid); PTI-F type tool holder
can be installed in 0°- and 180°-position.
Receiver type H has a primary coolant hole for the main supply and a secondary coolant
hole for an intermediate tool position on the face contact (H = half). For PTI type
H holders an installation position offset by 180° is not possible.
Receiver type A has one hole on the face contact for the primary coolant supply and
one additional hole for supplying the tool holder (driven tool) with sealing air (A
= air). Two more bores allow the installation of PTI-A holders with spring-type straight
pin in 0°- and 180°-position.
Receiver type X has a primary coolant hole for the main supp...
Open preview (PDF)Polygonal turret interface with flat contact surface - Coupling for driven tool holders with shanks of type F and A
