Proper use of the tool holder—through regular maintenance and correct storage—ensures reliability, minimizes machining issues, and extends the service life of the electrospindle and the machine. A damaged or poorly maintained tool holder can cause severe and costly failures.
Impacts, blows, or dents compromise tool holder balance, generating vibration, excessive temperature (affecting machining accuracy and electrospindle bearing life), and noise. They may also initiate corrosion in coating cracks.
The pull stud is subject to high wear and must be replaced at regular intervals. Excessive wear reduces tool clamping force, inducing vibrations that negatively affect both machining and the electrospindle. In severe cases, the spindle–tool holder interface may undergo permanent deformation.
For correct use and maintenance, observe the following guidelines:
– Never operate the machine without all safety protections in place.
– Remove the tool holder from the electrospindle at each machine shutdown and at the end of every machining cycle.
– Handle and store tool holders with care; avoid impacts, shocks, or accidental drops.
– Before storage or reinstallation, dry tool holders thoroughly with a clean cloth.
– Clean tool holders with alcohol or a damp cloth prior to installation in the machine.
– For cutter holder tool holders (1/2” GAS), keep the internal thread clean and ensure the tool can be fully seated before machining operations.
– Apply grease to clamping bolts regularly to facilitate tool removal.
Inspect the pull stud frequently; replace it when wear is detected on the flats or radius.
Last but not least: It is essential that wheels fit correctly on the cone. High-quality diamond wheels are designed so that the cone shaft makes full contact with the internal bore on both sides. This ensures proper centering, reduces vibrations, and prevents stress on the cone screw threads.
