A barrel cam device includes a barrel cam, an output table that includes a plurality of cam followers that engage with the barrel cam, and that rotates by rotation of the barrel cam, and a clamp device that clamps the output table when the output table is stopping.

A turret device having a configuration for obtaining required processing accuracy, includes: an indexing motor configured to pivotally index a turret tool; a turret shaft configured to transmit a rotation of the indexing motor; and a turret head coupled to the turret shaft on which multiple turret tools are mounted on a circumference, wherein the turret head includes a diaphragm-type base member coupled to the turret shaft, an inner diameter side of the base member is coupled to the turret shaft, and an outer diameter side of the base member is rotationally supported by a bearing fixed to a main body member of a turret.

The present invention relates to a method for operating a pivot drive, in particular a rotary indexing table, comprising an output element that can be driven to make a rotational movement, in particular a turntable, and an electrically actuatable braking device for braking and/or fixing the output element, wherein a time development of at least one characteristic parameter of the energization of the braking device is determined during an actuation of the braking device and a state of the braking device is determined on the basis of an analysis of the time development of the characteristic parameter. A corresponding pivot drive is further described.