Hydraulic Cylinder Drift Diagnosis on Deep Hole Drills
Hydraulic cylinder drift on deep hole drilling machines causes the feed axis to move when it should stay in position. This drift can advance the drill into the bore when it should be retracting, causing tool damage, or it can let the spindle head sag during a tool change, making alignment impossible. I have debugged drift problems on machines ranging from small gun drills to large BTA systems with 10-ton feed forces. ...