Kraftbetaetigte Vorrichtung zum Spannen von Werkstuecken auf Zahnradbearbeitungsmaschinen

摘要

A device for clamping workpieces on gear processing machines in which a drawbar is driven axially to pull to workpiece onto a workpiece support. A resilient collet is secured to a drawbar and has an outer cone for engaging a draw-in arbor to permit the drawbar to apply an initial pressure on the workpiece when the drawbar is pulled toward a workpiece support. The collet is received by a countercone which resiliently yields to the pull of the drawbar to permit the drawbar to apply a final clamping pressure to the workpiece.