Device for connecting a tool part to a connecting shaft

Details Device for connecting a tool part to a connecting shaft Device for connecting a tool part to a connecting shaft

B - Operations, Transporting

23

B

77/36

B23B 29/00 (2006.01) B23B 31/00 (2006.01) B23B 31/107 (2006.01)

Patent

CA 1242341

ABSTRACT A boring head penetrates by means of a cylin- drical fastening spigot into a bore of a connecting shaft. A retaining screw with a conical turned end engages in such a manner in a conical transverse bore in the spigot that the boring head is tightened by wedge effect against the connecting shaft. A cylindrical transverse bore is provided, approximately at right angles to the conical transverse bore, in the spigot, a longitudinally displaceable drive pin being supported in the cylindrical transverse bore. The ends are, for example, turned to conical shape and penetrate with little clearance into recesses having a trapezoidal or semi-circular cross-section. During the transmission of a torque, the drive pin is automatically centered, by which means the forces acting are evenly distributed between the two ends. The device is also particularly suitable for the transmission of large torques with increasing or compelling requirement and is rotatively inserted to the left and to the right.

472688

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