The present invention relates to a socket alignment device for a bar loading magazine for guiding a bar of material to an automatic lathe, wherein a z-axis (z) is defined by the longitudinal axis of a bar of material (2) guided in the bar loading magazine, and wherein a first socket (1), into which the bar of material (2) is to be introduced for processing thereof in the automatic lathe along the z-axis, is arranged in the bar loading magazine, wherein the first socket (1) is mounted so as to be rotatable either coaxially about the z-axis (z) or about a rotational axis () parallel to the z-axis (z) and wherein at least one drive means (6) is included, which can be coupled at least to the first socket (1), specifically to the rotary drive of the first socket (1) about the z-axis (z) in such a manner that the first socket (1) and the cross-sectional profile of the bar of material (2) can be aligned flush with one another for introduction of the bar of material (2).

A guide bush control device includes a guide bush motor that rotates and drives a guide bush; and a controller that controls driving of the guide bush motor, the guide bush control device controlling rotation of the guide bush by controlling the driving of the guide bush motor with the controller, wherein the controller includes a fixing unit that fixes the guide bush non-rotatably by exciting the guide bush motor in a rotation stop state.

A numerical controller according to the present invention includes: a turning condition designation unit that designates a machining condition of turning; a nicking condition designation unit that designates a machining condition of nicking; a fixed cycle instruction analysis unit that generates an instruction sequence of a turning cycle operation based on the turning machining condition; and a nicking operation instruction generation unit that generates an instruction sequence of a nicking cycle operation based on the turning machining condition and the nicking machining condition. The numerical controller executes the instruction sequence of the nicking cycle operation before executing the instruction sequence of the turning cycle operation.

A machine tool includes a displacement measuring unit to measure the displacement of a workpiece center-to-blade tip distance which is the distance between a center equivalent position of a workpiece support surface of a workpiece support unit and a blade tip equivalent position of a tool support unit in a direction perpendicular or substantially perpendicular to a spindle axis. The displacement measuring unit measures the displacement by measuring the displacement of a continuous path between the center equivalent position of the workpiece support unit and the blade tip equivalent position and excluding a processing movement region. The displacement measuring unit includes workpiece side and tool side linear position detecting units. A measured value of the displacement measuring unit is used in correcting an X-axis command value.

The machine tool system has a spindle that can move in an axial direction of a bar, a guide bush that supports the bar, a first tool post to which a first tool for machining a tip end part of the bar supported by the guide bush is attached, a pusher capable of biasing the bar toward the tip end side of the bar, a first control apparatus that controls operations of the spindle and operations of the first tool post, and a second control apparatus that controls operations of the pusher, wherein the first control apparatus includes a bar retraction mode in which the first tool post is caused to machine the tip end of the bar in a state where the bar is gripped by the spindle, the spindle is retracted and the bar is extracted from the guide bush, and the second control apparatus is caused to release the bias applied by the pusher and release the grip of the spindle on the bar.