328 Каталог ISCAR 2017 Вращающийся режущий инструмент и инструментальная оснастка Стр.324

Каталог ISCAR 2017 Ротационный инструмент Стр. 324 0328 ENG Lab2u

SLOTTING CUTTERS USER GUIDE SELF-dniP Feed Direction Down (climb) milling is recommended. Up milling or plunging are possible. (In down milling or plunging, backlash should be eliminated.) Defining Actual Feed Chip thickness decrease as the depth of cut decreases. Therefore, recommended feed (fz) can be increased as shown in the table. T/D Increase 1/6 1/8 1/10 1/20 recommended feed by 15% 30% 45% 100% Chip Formation in Slot Milling Chip shape is a function of the depth of cut. Down milling starts with large chip section, and exits with reduced chip selection. Down milling is recommended for improved tool life under stable conditions. Chip Thickness as a Function of D.O.C. to Diameter Ratio Stacked Cutters(1) Milling Wider Slots with Two Stacked Cutters 1. In accordance with the required width of cut (W1+W2), choose the recommended SGSF cutter combination (A, B, or C) from the table on the next page. 2. The diameters and coupling holes must fit properly. 3. All cutters (with the exception of 0125 mm type) have two key slots enabling staggered stacking. 4. Maximum value of shim AS (see table below) refers to maximum size of AS1+AS2 defined for a complete overlap of radii. When a projection is allowed at the bottom of the groove, AS1 and AS2 may be increased theoretically up to the corner size of the insert. Insert Width and Possible Modification See sketches on next page W A R AA max AS max 2.40 2.40 0.16 0.33 3.00 2.40 0.20 0.24 0.10 3.18 2.40 0.22 0.24 0.17 4.05 3.20 0.24 0.32 0.19 4.78 4.00 0.28 0.40 0.11 5.00 4.00 0.28 0.40 0.22 5.20 4.00 1.50 0.40 6.35 5.20 0.50 (1) 0.13 AA max - Maximum possible side ground for each cutter AS max - Maximum possible shim width for each cutter W, W1, W2 - Normal width of insert (1) Only cutters with 160-250 diameter sizes can be stacked. 5. Pins of the driving flange set should be lengthened to ensure contact length of at least 8 mm into one flange and 3 mm into the other. 6. When coupling cutters W=6.35, a shim (S) of 0.16 mm minimum thickness must be used. 7. The tolerance of effective widths is up to±0.2 mm. Due to the accumulation of tolerances, a step of 0.1 mm may occur at the groove bottom. Milling Wider Slots with Stacked, Double Cutters 324 ISCAR