The needle oscillation of the gravostar HRY-20 tool type is generated using compressed air, which is supplied via the machine spindle. All functional elements of the pulse control system are integrated in the tool. Due to the high oscillating frequency, the individual marking points are so close to each other that they can no longer be individually recognized. The marking contour therefore appears as a continuous deep line.
Micro percussion can also be used to create individual dots, which is ideal for generating a grid for a QR code or Data Matrix code.
The HRY-20 is suitable for markings with a predefined (tolerated) marking depth, e.g., for safety-critical components in turbine construction, etc.
Applications
For use in machine tools, automatic lathes, etc. – no additional installation required
Suitable materials
Light metals, iron casting, ductile iron casting, steel, Inconel (practically all machinable materials up to approximately 62 HRC)
Benefits
- Very high process reliability
- Shorter turnaround time
- No missed or incorrect markings
- A non-cutting process that does not weaken the material
- Practically no maintenance required
Facts
- Adjustable engraving depth via pressure control on the tool
- Integrated, automatic distance compensation up to approx. 1 mm
- Very short marking times are possible thanks to a high marking frequency and a feed rate of over 5‘000 mm/min
- The marking needle, made of tungsten carbide (material hardness 92 HRC), offers very high wear resistance
- The needle can be easily replaced in just a few simple steps
Accessories
- Replacement marking needles with a standard 90° angle: other angles (60°, 120°, etc.) are available upon request
- Extended needle holders (+15, +50, or +100 mm)
- Longer marking needles for the extended needle holders
Specifications
| Specifications | HRY-20 |
| Distance compensation (depending on the available working pressure) | Up to approx. 1 mm |
| Standard tool holder | Weldon schank ⌀20 mm (others upon request) |
| Oscillation frequency | 300 Hz |
| Required air pressure | 3 up to 8 bar |
| Feed rate | over 5’000 mm/min possible |
| Adjusting the tool | Integrated, precisely adjustable air pressure regulator (for setting the preset marking depth) |
Layout gravostar HRY-20
