Customer requests – application:
- Inner diameter and face turning of rotating parts
- Material: cast iron EN-GJL-250
Machine tool:
- vertical lathe (carousel) 12 CNC B (man. TOS Hulín)
- machine table: diameter 1250 mm
- working diameter: 1 300 mm
- working height: 700 mm
- workpiece weight: 12 000 kg
Cutting conditions:
- Clamping side of parts – pre-machined
- Feed: min. 0,2 mm/rev.
- Rotations: 70/min
- Cutting depth: 5 mm
Solution:
Due to the nature of the material (cast iron parts), we chose reinforced magnetic system (added NdFeB magnets). Top plate was executed with T-slots in order to allow additional mechanical fixing of parts. El connection was realized by means of quick coupling (bayonet) connector placed on the magnet´s body and secured by anti-leakage cap.
Magnetic chuck – basic facts:
| Application: | turning |
| Technology: | electropermanent |
| Holding force: | 140 N/cm2 |
| Min. workpiece dimensions: | 50 x 100 x 30 mm |
| Pole insulation: | radial |
| Pole pitch: | 29 – 122 mm |
| Effective clamping range: | 285 – 1000 mm |
| Pole insulation: | brass |
| Installed on machine table: | using an intermediate plate |
| Power supply: | 340 VDC (in pulses) |
Result:
Acc. to Mr. Urbánek, the magnetic clamping chuck´s functionality is perfectly in accordance with requirements for clamping of these parts.
Why Walmag?
The customer has previous very good experience with other (permanent) magnetic clamping chucks from Walmag Magnetics, as well as with the level of support from our sales representatives andservice. Walmag is the first choice for other upcoming projects.