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Jig Grinder
NC type300G 3GEN 4GDN 6GCN 7GAN
- V-F sliding surfaces of X- and Y-axes, spindle head, top and bottom sides of horizontal bridges are scraped for extremely high geometric precision.
- Z-axis is NC-controlled and two types of control (Z-axis as cutting feed and Z-axis as chopping cycle) are available.
- As for Z-axis chopping cycle, the ball screw drive has realized the high speed of 200 cycles/min (at 25 mm stroke). Even at this speed, the bottom dead center precision is 2µm (300G, 4GDN, 6GCN).
- In 3GEN, the linear motor is adopted to the Z-axis (first practical application for machine tools). Z-axis chopping cycle of 400 cycles/min (at 25 mm stroke), which was impossible for traditional models, has been realized to drastically reduce the process time of contouring cutting.
- Low thermal expansion casting is adopted for the head material. Error due to heat displacement is extremely small .
| Item | Unit | 300G | 3GEN | 4GDN | 6GCN | |
|---|---|---|---|---|---|---|
| Stroke | X-axis | mm | 500 | 610 | 1,020 | |
| Y-axis | mm | 300 | 410 | 760 | ||
| Table | Table size | mm | 700 X 350 | 790 X 600 | 1,280 X 960 | |
| Maximum loading weight | kg | 300 | 750 | 1,200 | ||
| Quill(Z-axis) | Chopping stroke | mm | 95 | 135 | ||
| Number of chopping cycles(at 25mm stroke) | cycle/min | 200 | 400 | 200 | ||
| Machine weight | Kg | About 3,200 | About 3,300 | About 4,300 | About 9,000 | |