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Particularly long, slender extensions often have a tendency to bend and vibrate. When
machining long overhangs in hard to reach areas such as deep cavities, the VIbration DAmping
Technology, VIDAT, from Bilz Tool Co. Inc. can be used. With an integrated damper, these extensions reduce the
relatively quick vibrations and thus ensuring an extensive vibration- and chatter free machining.
Without vibration damping, the tool holder is confined to the limits of machining with large L/D
ratios.
The VIDAT extensions provide a much higher cutting depth which increases the metal-removal
rate enormously. Compared to standard extensions with a similar projection length, the process
can be performed faster with improved service life and process safety, resulting with a
smoother and chatter-free workpiece surface.
By using the BILZ VIDAT extensions you can:
Reduce the vibrations in the clamping system,
Improve the surface quality of the work piece,
Increase tool life,
Increase mrr.
BILZ VIDAT extensions have a h6 shank tolerance and can be both shrunk and stretched with
other clamping devices for cylindrical shanks. The extensions are available with a range of
tool diameters of 6mm to 20mm, with total lengths of 210mm or 300mm available. The VIDAT
extensions are suitable for up to 80 bar of internal coolant supply.
Related Glossary Terms
- chatter
chatter
Condition of vibration involving the machine, workpiece and cutting tool. Once this condition arises, it is often self-sustaining until the problem is corrected. Chatter can be identified when lines or grooves appear at regular intervals in the workpiece. These lines or grooves are caused by the teeth of the cutter as they vibrate in and out of the workpiece and their spacing depends on the frequency of vibration.
- coolant
coolant
Fluid that reduces temperature buildup at the tool/workpiece interface during machining. Normally takes the form of a liquid such as soluble or chemical mixtures (semisynthetic, synthetic) but can be pressurized air or other gas. Because of water’s ability to absorb great quantities of heat, it is widely used as a coolant and vehicle for various cutting compounds, with the water-to-compound ratio varying with the machining task. See cutting fluid; semisynthetic cutting fluid; soluble-oil cutting fluid; synthetic cutting fluid.
- metal-removal rate
metal-removal rate
Rate at which metal is removed from an unfinished part, measured in cubic inches or cubic centimeters per minute.
- shank
shank
Main body of a tool; the portion of a drill or similar end-held tool that fits into a collet, chuck or similar mounting device.
- tolerance
tolerance
Minimum and maximum amount a workpiece dimension is allowed to vary from a set standard and still be acceptable.
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