ISO 6987 pdf download – lndexable hard material inserts withrounded corners, with partly cylindrical fixing hole – Dimensions.
5.2 Marking
The following symbol, at least shall be marked on the insert itself (except when thés is difficult to carry out on small inserts):
— symbol of the group of applicabon. or
— commercial designation of the hard material grade, or
— both. ii possible, on large inserts.
6 Measurement
Annex B indicates the methods of measunng the dmension iii of the ndexable Inserts covered by this International Standard.
7 Recommended dimensions
The choice of the more common dimensions is restricted to the values given in Tables 3 to 12, Ii is strongly recommended that these standard Inserts be used wherever possible (first preference). When other inserts are required, their dimensions shall be selected from the non-shaded areas of Tables C.1 to C.4 (second preference). Inserts having dimensions given in the shaded areas of this table are not recommended
NOTE The w dimensions are calculated using the exact values 04 the corner radius. ; given in Table 2, rounded to the third decimal place.
B.5 Hexagonal inserts
Dimension m shall be checked wfth reference to the diameter. d. of a precision roller, where d corresponds to the noninal diameter of the inscribed circle of the insert. The insert shall be placed on a plate, as shown in Figure B.4, and checked by means ala dial gauge which shall be zeroed to dimension m by means of a roller with the aid of a gauge block, The dial gauge then gives a direct reading of the error when applied to the inserts being measured. The roller has a tolerance of! 0.002 mm.
ISO 6987 pdf download – lndexable hard material inserts withrounded corners, with partly cylindrical fixing hole – Dimensions
