A rotary table device includes a table provided on one end-side of a main shaft rotatably supported in a frame; and a drive transmission mechanism transmit rotation of an output shaft of a drive motor to the main shaft and including a drive transmission member and accommodated in an accommodation space formed in the frame. The table is supported with respect to the frame by a bearing provided between a lower surface of the table and an upper surface of the frame, and a space is provided between the lower surface of the table and the upper surface of the frame. The frame is provided with a communication passage configured so that the space and the accommodation space communicate with each other.

An indexing apparatus includes a fixture tool, movable relative to an operation cell, and an indexing feature, fixed relative to the fixture tool. The indexing apparatus also includes a sensor, configured to detect the indexing feature. The indexing apparatus further includes a controller, in communication with the sensor. The controller is configured to locate the fixture tool relative to the operation cell from an indexing-feature location of the indexing feature, identified by the sensor.

An indexing apparatus includes a fixture tool, movable relative to an operation cell, and an indexing feature, fixed relative to the fixture tool. The indexing apparatus also includes a sensor, configured to detect the indexing feature. The indexing apparatus further includes a controller, in communication with the sensor. The controller is configured to locate the fixture tool relative to the operation cell from an indexing-feature location of the indexing feature, identified by the sensor.

A drive unit having a transport element has at least one entrainer engaging into a drive groove of a barrel cam, an electrical drive device, and a base control device that is adapted to receive control signals for the operation of the drive unit from a user interface programmable by an operator and to output a drive signal to the drive device in dependence on a received control signal. The drive device is adapted to drive the barrel cam to make a rotational movement and thus to drive the transport element in response to the drive signal. The base control device is further adapted to selectively operate the drive device in a full operation mode or, if no control signal is received after the output of a drive signal and after the elapse of a cycle time duration of the drive unit, to set it into a standby operation mode in which an electrical supply of the drive device is interrupted.

A method for controlling the motor of a tool magazine that rotates around a horizontal rotation axis is configured so that: at least two indexing positions for the tool magazine are determined; the load torque acting on the tool magazine when stopped at said indexing positions is measured; an unbalance torque, which is the load torque when stopped at the indexing position at which the load torque when stopped is maximal, is calculated from multiple load torques when stopped; and the servo motor for the tool magazine is controlled on the basis of the unbalance torque.

A method for controlling the motor of a tool magazine that rotates around a horizontal rotation axis is configured so that: at least two indexing positions for the tool magazine are determined; the load torque acting on the tool magazine when stopped at said indexing positions is measured; an unbalance torque, which is the load torque when stopped at the indexing position at which the load torque when stopped is maximal, is calculated from multiple load torques when stopped; and the servo motor for the tool magazine is controlled on the basis of the unbalance torque.

The present invention provides an indexing driving device for a turntable, which is provided with a plurality of roller followers arranged at equal angular intervals; and a barrel component, which is provided on one side of the turntable, the cam component is provided with a first side rib wall with a continuous cam curved surface in a first direction and a second side rib wall with a continuous cam curved surface in a second direction, and the first side rib wall and the second side rib wall are facing opposite sides to form a cam groove with variable groove width, for introducing the roller followers and rotating the turntable; wherein the cam groove with variable groove width makes the first side rib wall and the second side rib wall respectively pre-compress to at least one pair of the roller followers of the turntable symmetrically in different directions, so as to effectively eliminate the backlash problem between the cam component and the roller followers and improve the positioning accuracy of the turntable.

A drilling detection system may include a drilling detection circuitry including one or more detection processors configured to receive a vibration signal indicative of vibration associated with a drilling machine configured to drill holes into a substrate and receive a movement signal indicative of movement of the drilling machine relative to one or more positions on the substrate. The one or more detection processors may also be configured to determine vibration associated with the drilling machine, and determine movement associated with the drilling machine. The one or more detection processors may also be configured to determine, based at least in part on the vibration associated with the drilling machine and the movement associated with the drilling machine, the drilling machine has drilled holes into the substrate and a position on the substrate at which the drilling machine has drilled the holes into the substrate.

A method and apparatus for changing pallets delivered to a machining center. Different workpieces are connected or attached to different pallets. A first workpiece corresponding to a first pallet is delivered to or near an indexer or indexer assembly and the indexer is moved into an engaged position and performs a work operation on the first workpiece. The indexer is then moved to a disengaged position and the first pallet and the first workpiece are exchanged or switched out with a second pallet having a second workpiece. The indexer is then moved to an engaged position and works the second workpiece and when completed, the indexer moves to the disengaged position and the second workpiece is exchanged or switched out with a third pallet having a third workpiece. The indexer system of this invention can quickly and cost-effectively cycle through different pallets and thus different workpieces.

A turret tool post includes a turret turnably supported by a post body, turret turning part having a turret turning shaft and the like to turn the turret, a tool attachment part turnably holding a rotatable tool and attached to the turret, and tool-attachment-part turning part turning the tool attachment part to turn the rotatable tool. The tool-attachment-part turning part and the turret turning part are provided independently and arranged to face each other. The tool-attachment-part turning part includes a tool turning motor installed inside the turret and an attachment-part transmission shaft connected to the tool turning motor.