Case Studies
Motor Spindles
E3000i series
[R2 Ball End Mill Brass Cutting] CNC Automatic Lathe × 60,000min-¹ Flange Type Spindle
Product： BMF-3160-CTZ
Spindle O.D.：φ31mm
- Product series
- E3000i
- Product
- BMF-3160-CTZ
- Spindle O.D.
- φ31mm
- Machine
- CNC automatic lathe (Cincom L20Ⅶ LFV)
- Workpiece material
- Brass (C3604)
- Tool system
- R2 ball end mill (Nissin Tool Co., Ltd./RSB230 R2×12)
Cutting Condition
| Conventional conditions | Nakanishi's proposed conditions | |
|---|---|---|
| Cutting speed [m/min] | 75 | 754 |
| Rotation speed [min-¹] | 6,000 | 60,000 |
| Feed speed [mm/min] | 360 | 3,600 |
| Feed rate per blade[mm/tooth] | 0.03 | 0.03 |
| Depth of cut (Ap x Ae)[mm] | 0.03×0.06 | 0.03×0.06 |
Point
This case study introduces R2 ball end mill brass machining on a CNC automatic lathe (CITIZEN: Cincom L20Ⅶ LFV) in collaboration with Tactex Corporation, a company that develops, sells, and operates CAD/CAM systems.
After rough cutting with a standard rotary tool (GSC1310), finish cutting was performed with a Nakanishi high-speed spindle (BMF-3160-CTZ). 60,000 min-¹ maximum speed was achieved by electrification of Cincom’s standard rotary tool and speeder.
[Points]
✔ High speed rotation: Optimum peripheral speed for small-diameter tools to increase feed rate = shorter machining time.
✔ External control: Rotation ON/OFF is indicated by M code.Error detection is possible.
✔ Compact: Standard rotary tool GSC1310*.
Can be installed as a replacement for the standard rotary tool GSC1310*.
*✔ Target: Cincom A20/L20/M32, etc.
