BS ISO 03364:2011 pdf free download – Indexable hardmetal (carbide) inserts with rounded corners, with cylindrical fixing hole一 Dimensions.
5.2 Marking
The following symbols, at least, shall be marked on the insert itself (except where this is difficult on the smaller inserts):
— symbol of the group of application, or
— commercial designation of the hardmetal (carbide) grade, or
— both, it possible, on large inserts,
6 Measurement
Annex B indicates the methods of measuring the dimension, m, of the indexable inserts covered by this International Standard.
7 Recommended dimensions
7.1 General
The choice of the more common dimensions is restncted to the specifications given in Tables 2 to 7. It is strongly recommended that these standard inserts be used wherever possible (first preference). Where other inserts are specially required, insert dimensions shall be selected from the non-shaded portions of Table B.1 (second preference). Inserts corresponding to dimensions represented by the shaded portions of this table are not recomrnended
7.2 Triangular inserts
A.1 Triangular inserts
Dimension m is related to the side opposite the corner which is being measured. The insert shall be placed on a surface plate as shown in Figure A.1 and checked by means of a dial gauge zeroed with the aid of a gauge block corresponding to dimension m. The dial gauge then gives a reading of the error when applied to the insert to be measured.
A.2 Square inserts
Dimension m shall be checked with reference to the diameter d of a precision roller, where d corresponds to the nominal diameter of the inscribed circle of the insert. The insert shall be mounted on a 90° V-block as shown in Figure A.2 and checked by means of a dial gauge which shall be zeroed to dimension m by means of a roller with the aid of a gauge block.’ The dial gauge gives a direct reading of the error when applied to the inserts being measured. The roller has a tolerance of士0,002 mm.
A.3 Rhombic inserts
Dimension m, m1 or m2 shall be checked with reference to the diameter, d, of a precision roller, where corresponds to the nominal size of the inscribed circle of the insert. The insert shall be mounted ona 35°, 55°， 80° or 100° V-block, as shown in Figure A.3, and checked by means of a dial gauge which shall be zeroed to dimension m, m1 or m2 by means of a roller with the aid of a gauge block. The dial then gives a direct reading.