Общий каталог Tungaloy 2020 - 2021 - страница 1624

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Parts for ToolsTechnicalReference Deviation (smaller than nominal raidus) No deviation No deviation Dteh(vCainanoentmincoooespnsmee(slniraanasrradagyliteufrioroasnri)dtiuhsse) User’s Guide - Technical Reference Tu r n i n g To o l s Additional information on offsetting -SW / -FW wiper inserts Compensations ① , ④ Tool offsets (Compensations for X- and Z-axis) Why need to offset ? Ex. When using DNMG150412 The wiper insert does not provide the exact corner radius. A deviation from the standard nose radius shape as shown below will always occur when going into a corner. An additional program adjustment is, therefore, required to achieve the correct corner radius or tapered surface dimension on the workpiece. Before offset After offset Wiper insert Nominal nose radius Wiper nose radius' contour is slightly Wiper nose radius' contour is partially larger than the nominal radius. smaller than the nominal radius. → No compensations necessary for ID, OD, or face turning. → The nose radius profile deviates from the Meanwhile, due to these deviations, compensations to the NC program required corner radius, thus the actual corner are necessary when turning corners and tapered surfaces for the correct profile will be incorrect. workpiece dimensions. Compensations ③ , ⑥ Program compensation for corner radii (proceed after ① , ④ ) Compensation for corner radius Ex. When using DNMG150412 Example: to machine a corner radius = R2.0 mm, using insert nose radius = R1.2 mm. For standard ISO insert: DNMG150412-** Input R0.8 for G2 or G3 (circular interpolation) to compensate the nose radius deviation. The deviation generated when using the ISO insert parameters for the wiper insert. Wiper insert Actual corner radius: 0.1 mm For wiper insert: DNMG150412-SW/-FW R 2.0 mm Input R1.14 (= R1.2 + 0.34 from the list) Theoretical corner radius shape when R1.2 for the nose radius, instead of R0.8, tocompensate the nose radius deviation. (=nominal nose radius) is programmed forthe wiper insertThe actual corner radius becomes smaller than the required radius due to the insert radius deviation. Corner radius = R1.66 mm (R2.0 - 0.34) L036 www.tungaloy.com