Общий каталог Palbit - страница 40

SEHT | SEHW

A recommended cutting conditions | WIPER INSERTS A

Condições de corte recomendadas | Condiciones de corte recomendables Vc (m/min) Rec. Cutting Conditions Feed fz (mm/t) - Fw at least 40% larger than fn (fn=fz x Z);

HB Wear Resistance Toughness - Axial depth of cut is 0,5 - 0,8 mm;

ISO PSM Material (Brinell)

- The width of parallel land (F) of the SEHT insert is 2,0 mm.

1 Unalloyed Steel 125-220 - 150-230 130-160 0,10-0,25 - - 0,10-0,30 - With a cutter of 10 inserts and using a feed per tooth (fz) of 0,3 mm, the feed per revolution (fn) will be 3 mm, i.e. 66% bigger than the parallel land.

- To obtain a good surface finishing, the feed per revolution should be a maximum 80% of 2,0 mm = 1,6 mm.

P 2 Low-Alloyed Steel 220-280 - 140-220 120-150 0,10-0,20 - - 0,10-0,30 - The wiper insert will have a parallel land (Fw) with a width of approximately 8,2 mm.

- Result: Feed per revolution (fn) could be increased from 1,6 mm to 60% of 6,0 mm = 4,9 mm.

(Note 1) Cutting conditions ae/DC=70% (Note 2) Cutting conditions should be ajusted according to the machine and work rigidity.

(Note 3) If chattering occurs, reduce ap and Vc by 30% and keep the same fz per thooth Fig. A Fig. B

When using wiper insert, install the insert as shown on Fig. A. If the insert is installed as shown on Fig. B breakage of the insert is inevitable and normal surface finish can not been obtained.

CHIP-BREAKER selection guide |

Guia para aplicações do quebra-aparas | Guía para aplicación del rompevirutas HB Chip-Breaker Application

ISO PSM Material