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Five-Axis Hard Milling Improves Electrode Accuracy
Fully automated, high-speed hard milling centers saved moldmaker time, money, handwork, allowed...
Read more »HC-878
The HC-878's high-rigidity, bridge-type monoblock structure allows high-speed, high-precision machining, while the minimized distance between guide surface and spindle center provides greater stability. The high-rigidity bed with ideal rib distribution guarantees static positioning accuracy of ±0.000078” and ±0.000039” repeatability.
The HC-878 is capable of a wide range (200 - 32,000 RPM) using a grease-packed spindle and a long-life AC motor. High-speed direct hard milling is possible via dry or semi-dry oil-mist systems. New HSK-E40 holder achieves six times higher clamping force than a regular BT shank while Dual Balance Cylinders reduce the load for the ball screw and servo motor.
The HC-878 features a Fanuc 31i-A5 Super High-Speed Processor and Al Contour Control II – a “NANO CNC System” with Intelligent Velocity Control, NANO Interpolation and NANO Smoothing.
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| Machine Travels: X x Y x Z in (mm) | 33.5 x 29.5 x 16.0 (850 x 750 x 400) |
|---|---|
| Spindle Speed | 200 ~ 32,000 RPM |
| Spindle HP | 8.4 |
| Spindle Lubrication | Grease Packed |
| Tool Changer Size | 12 Position Standard |
| Positioning Accuracy/Repeatability: in (μm) | ±0.000120/±0.000040 (±3.0/±1.0) |
| Table Work Area X x Y: in (mm) | 37.4 x 29.5 (950 x 750) |
| Table to Spindle Nose Distance: in (mm) | 8.8 ~ 24.6 (225 ~ 625) |
| Max. Workpiece Weight: lb (kg) | 440 (200) |
| Coolant Tank Capacity: gal (L) | None |
| Table Height from Floor: in (mm) | 31.5 (800) |
| Actual Measured Circularity (2.0" dia. @8 IPM): in (μm) | 0.000098 (2.5) |
| Spindle Taper | HSK-E40 |
| Spindle Air Purge | Standard |
| Air Blast through Spindle | Standard |
| Oil Mist with Collector | Optional |
| Linear Scales X, Y, Z - axes | Heidenhain 0.00001mm Standard |
| Rapid Traverse Speed: in/min. (m/min.) | 787 (20) |
| Cutting Speed (Normal Mode): in/min. (mm/min.) | 0.01 - 315 (0.25 ~ 8000) |
| Cutting Speed (GR Super PC Mode): in/min. (m/min.) | 394 (10) |
| Dust Collection System | Amano PiE-30 Standard |
| Machine Weight: lb (kg) | 15,500 (7030) |
| Machine Height: in (mm) | 115.5 (2935) |
| Required Floor Space [Machine Unit]: in (mm) | 134 x 134 (3400 x 3400) |
| Control Unit | Fanuc 31i-A5 with RISC Processor |
| Power Requirements KVA | 200 ~ 220V 22KVA |
| Air Supply | 26.5 cu.ft./min @ 72 psi |
Overview
- High-rigidity structure for high-speed, high-precision hard or graphite milling
- Greater stability for positioning accuracy and repeatability
- High-speed direct hard milling is possible via dry or semi-dry oil-mist systems
Features
- Super Hybrid Concept - Hard Milling or Graphite
- Highly Rigid Structure
- Extended Speed Range - 200 through 32,000 RPM
- High Rigidity Tool Holders
- Z-axis Balance Cylinder
- Fanuc 31i-A5 64 bit RISC Controller with HPCC (High Precision Contour Control)
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