gravostar H-PP / WA

Various special holders with appropriate holders are available for applications where the marking has to be carried out at an angle to the machine axis.
These applications, which are usually customer-specific, can be equipped with coolant or compressed air operated micropercussion tools or scratching or ball point marking tools depending on the respective requirements.

As with the other versions of the gravostar H-types the needle oscillation is generated by compressed air, which is supplied via the machine spindle.
All functional elements for the impulse control system are integrated in the tool. As soon as the air supply is activated, the needle begins to oscillate at a frequency of approx. 300 Hz.

Due to the high oscillating frequency, the individual marking points are so close to each other that they can no longer be individually recognised. The marking contour therefore appears as a continuous deep line.

Field of application

Individual deeper markings of any workpieces
in an angular arrangement to the spindle axis with regular, uneven or rough surfaces.

General information

• Use in machining centres, automatic lathes, etc. (no additional installations required)
• Reinforced needle drive via central compressed air supply via
  the machine spindle (required air pressure approx. 2 – 8 bar)

Tool specifications

• Integrated, automatic distance compensation up to approx. 3 mm
  (Regular marking depth also of uneven marking surfaces)
• Reinforced hard metal marking needle with very high wear resistance (material hardness 92 HRC)
  • needles are simple to replace with just a few manual operations
  • can be used for almost all machinable materials
    (hardness of marking surface up to approx. 62 HRC)
• Very short marking time
  • oscillation frequency of the marking needle: approx. 300 Hz
  • feed speed more than 5‘000 mm/min possible
• Swivel position of the angle adapter is individually steplessly adjustable
• Extremely high degree of process reliability due to easy pulse control integrated into the tool
• The tools are available in different versions and with additional options such as:
  • VDI tool holders for lathes
  • various HSK, SK or special tool holders for machining centres
  • needle holders with different extensions