Schunk now offers a hydraulic expansion toolholder where a run-out accuracy of 0.000 mm can be quickly achieved.
The new TENDOzero is equipped with four lateral set-screws that directly adjust the tool shank. The angular position of the tool is corrected and the run-out is precisely adjusted.
With this precision toolholder, even demanding applications where tight tolerances on the form, position and surface finish are required can be rapidly and reliably machined.
In contrast to conventional solutions that work with compensation adapters or rings, the set-screws of the TENDOzero are directly integrated into the precision mounting. Interfering contours are optimised and the adjustment process is simplified with an excellent run-out accuracy guaranteed.
With a Torx-plus key, the angular position of the clamped precision tool is corrected and run-out is adjusted. Compensation of the spindle run-out errors are conducted directly at the machine, so that machine, toolholder and tool are perfectly aligned.
When using high quality tools with PCD or CBN cutting edges, quality and dimensional accuracy of the workpiece increases and the tool is protected from damage. Furthermore, the excellent vibration damping of the hydraulic expansion toolholder assures an even cut and micro blowouts on the cutting edge are noticeably minimised, thus increasing tool life drastically. Comparative measurements confirm that with the TENDOzero, tool service life is extended by up to 50% with machine spindle service also improved.
Additionally, as well as having conventional cooling from the outside, the TENDOzero allows an internal coolant supply. In a slightly modified version, the TENDOzero also permits minimum quantity lubrication (MQL).
TENDOzero is available for the interfaces HSK-A63 and 100, SK40 and 50, BT40 and 50, as well as CAPTO C4, C5 and C6.