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Cutting Formula of i-Center
i-Center
● Before you start, please pay attention the following conditions.
Cutting Data
● Using your “d1” value and cutting speed Vc from the data sheet, calculate spindle speed “S”(r.p.m).
● “ F” feed rate per minute F = S x f = IPR x r.p.m.
● “ F” feed rate per minute F = S x f = IPR x r.p.m.
| Metric | Formula | ||
|---|---|---|---|
| d1 | Center diameter | mm | |
| Vc | Cutting Speed | m/min. | |
| S | Spindle speed | r.p.m | (Vc x 1000) / (π x d1) |
| f | - | mm/rev. | |
| F | - | mm/min. | Sxf |
| Inch | Formula | ||
|---|---|---|---|
| d1 | Center diameter | inch | |
| S | Spindle speed | r.p.m | (3.82 x SFM) / (d1) |
| SFM | Surface speed | ft./min. | Vc (m/min.) x 3.28 |
| f | IPR | inch/rev. | |
| F | - | inch/min. | IPR x r.p.m. |
>> Cutting Data PDF File Download About Indexable Center Drill.
