This Part of ISO 3002 defines a nomenclature for certain basic concepts concerning cutting tools; it is applicable
to the geometry of every kind of cutting tool and emphasizes a known terminology for them which is intended
to provide a framework on which the nomenclature and appropriate standards for individual types of cutting
tool, such as single-points tools, twist drills, milling cutters and hand tools, can be established. However, the
standards for individual types of cutting tool will not each require or use the full range of terms and definitions
set out in the basic nomenclature established in this Part of ISO 3002.
The definitions are grouped into four clauses. After defining the general terms for surfaces on the workpiece,
certain elements of the tool, surfaces on the tool, the cutting edges and the tool and workpiece motions in
clause 3, this Part of ISO 3002 defines, in
clause 4, reference systems of planes which are subsequently used to
define the various angles which are included in
clause 5. Two reference systems of planes are necessary : one,
the tool-in-hand system, is used to define the geometry of the tool so that it can be manufactured and measured;
the other, the tool-in-use system, is required to define the effective geometry of the tool when it is actually
performing the cutting operation.
Clause 7 gives definitions relating to chip breakers.
ISO 3002/2 gives general conversion formulae to relate tool and working angles.
NOTE — In addition to terms used in the three official ISO languages (English, French and Russian), this Part of ISO 3002
gives the equivalent terms in German, Italian and Dutch; these have been included at the request of ISO Technical
Committee 29 and are published under the responsibility of the member bodies for Germany, F.R. (DIN), Italy (UNI) and
the Netherlands (NNI). However, only the terms and definitions given in the official languages can be considered as ISO
terms and definitions.