Kennametal Hertel Ag

Hertel Ag Werkzeuge+hartstoffe

Kennametal Hertal Ag

Kennametal Hertel Ag Werkzeuge and Hartstoffe

Horst Jager

Gebhard Muller

Ulrich Krenzer

Michael Schuffenhauer

Bernhard Borschert

Johann Kohlbauer

Gebhard Mueller

Drilling and chamfering tool

Drill with a drill point part

Milling cutter

Rotary tool with balancing rings

A rotary chuck for axially clamping a tool includes a spindle terminus forming part of a rotary machine tool spindle; a clamping element holder immobilized in the central bore of the spindle terminus; and a plurality of clamping elements circumferentially evenly distributed about the holder. Each clamping element is a one-armed spreading lever having a first end pivotally supported in the holder to provide for a pivotal movement of each clamping element in a plane containing the spindle axis. Each clamping element has a second end having a radially outwardly swung clamping position in which each second end is adapted to be clamped against an inner shoulder of a hollow tool shank received in the spindle bore for axially pulling the tool into engagement with a frontal end face of the spindle terminus. Each second end has a radially inwardly swung releasing position in which the tool is released from the chuck. There is further provided a clamping drive extending coaxially with the spindle axis and being operatively coupled to the clamping elements. The clamping drive is axially movable in a first direction for displacing the clamping elements into the clamping position and in a second direction for displacing the clamping elements into the releasing position.

Chuck for axially clamping a tool to a machine tool spindle

Growing community of inventors

Nurnberg, Germany

Horst Jager