Tool holder repeatability when using ATC within 1 micron

The BIG-PLUS SPINDLE SYSTEM assures the highest precision location of the toolholder in the spindle when using the ATC for loading tools, as a result of the dual contact, which precisely positions the tool holder within 1 micron.

Elimination of Z-axial movement at high rotational spindle speeds, the mouth of machine spindle can expand slightly due to centrifugal force.

As the machine spindle expands, the conventional toolholder, which under constant draw bar pulling pressure, moves further into the spindle.

On high tolerance applications, this slight pull back of the cutter can affect dimensional accuracy of the Z-Axis. Pull back can also cause the toolholder to get locked into the machine spindle taper.

The face contact provided by the BIG-PLUS Spindle System prevents the toolholder from being drawn back into the machine spindle.

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