An NC device for correcting a blade edge position at a time of a turning tool being mounted on a tool main spindle in a machine tool, comprising: first acquisition part for acquiring an inclination amount of a clamp surface of the tool main spindle; second acquisition part for acquiring a tool shaft rotation phase angle; third acquisition part for acquiring a protrusion amount in which the blade edge is protruded from the clamp surface of the tool main spindle; and first correction arithmetic processing part for arithmetically processing a deviation amount of the position of the blade edge that is generated between a reference position and the shaft rotation phase angle obtained by the second acquisition part due to the inclination amount of the tool clamp surface obtained by the first acquisition part and the protrusion amount obtained by the third acquisition part.

A cam device includes: a cam unit, a reduction unit and a housing. The cam unit includes a rotating body and a cam. The rotating body includes a cam follower. The cam includes a cam surface that engages with the cam follower, and the cam is configured to rotate the rotating body by rotation of the cam. The reduction unit is provided between a motor and the cam, and includes a motor gear and a cam gear. The motor gear is mounted on a motor side of the reduction unit. The cam gear is mounted on a cam side of the reduction unit. The housing includes a first housing part and a second housing part as a unit. The first housing part accommodates the cam unit, and the second housing part accommodates the reduction unit.

In order to provide a tool changer that can detect an entry of a foreign substance into a turret mechanism portion or wear of a turret mechanism part, a tool changer of the present invention includes a reference phase false detection sensing portion that monitors load variations which occur in a turret drive source and detects an entry of a foreign substance into the turret mechanism portion based on a difference between the load variations and a reference load used as a reference. Moreover, the reference phase false detection sensing portion can also detect the progress of wear of the turret mechanism part based on the integral of the absolute value of a difference between the load variations which occur in the turret drive source and the reference load used as a reference.

A multiple stage processing device having a plurality of radial stages, each individual radial stage is positioned between adjacent dividing walls and indexable though a plurality of processing stations. A plurality of fixture mount assemblies are positioned on an actuation surface of the rotatable indexing assembly, each individual fixture mount assembly is associated with and mechanically coupled to an individual radial stage. One or more slotted drive hubs communicatively coupled to independently operable drive motors are positioned adjacent to the actuation surface of the rotatable indexing assembly and are engageable with the plurality of fixture mount assemblies. When an individual fixture mount assembly is engaged with an individual slotted drive hub, an individual independently operable drive motor can independently control the individual fixture mount assembly such that the individual radial stage mechanically coupled to the individual fixture mount assembly is moveably coupled to the independently operable drive motor.

A spindle phase indexing device for a machine tool is equipped with a guide rail detachably or fixedly attached to a table, a phase indexing jig configured to travel on the guide rail and which includes a first fitting part, a cutting tool including a second fitting part configured to be fitted with the first fitting part, and a controller configured to store therein a phase of a spindle at a point in time when the first fitting part and the second fitting part are fitted together. The first fitting part and the second fitting part are formed such that rotation of the cutting tool is constrained when the first fitting part and the second fitting part are fitted together.

A robot system includes a robot including a hand including a plurality of finger sections and a work device in which the robot performs work. The work device includes a first rotating body, a second rotating body configured to rotate in association with rotation of the first rotating body, a grip section provided in the first rotating body, and a setting section provided in the second rotating body, a target object of the work performed by the robot being set on the setting section. The robot grips the grip section with the finger sections to rotate the first rotating body.

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.

A rotary table device is provided, which includes a housing having a space portion formed therein, a main shaft installed in the space portion and provided with a worm wheel coupled along an outer circumference thereof, a pair of worm shafts provided to be engaged with the worm wheel at both sides of the worm wheel in a predetermined position of the space portion, a driving motor installed on one side of the housing, a power transmission member installed on an upper surface of the housing to transmit a driving force of the driving motor to the pair of worm shafts, and a clearance adjustment member installed in a predetermined position of each lower end of both sides of the housing.

A rotary index table comprising a plate, which has drivers that engage with a drive groove of a cam barrel, wherein the plate can be driven by the cam barrel to carry out a rotational movement about a rotational axis which in turn can be driven by a motor to carry out a rotational movement about the longitudinal axis thereof, and wherein the motor directly drives the cam barrel.