Fanuc Corporation

Toshihiro Watanabe

A numerical value control device controls a machine tool in which a multi-edge tool for turning is used to turn a workpiece, and said numerical value control device includes: an NC command decoder unit that decodes a command of a processing program; and a tool information generation unit that generates geometric information pertaining to the multi-edge tool. The NC command decoder unit includes: a tool path generation unit that calculates the tool path from the command of the processing program; an edge switching determination unit that determines whether or not the edge of the multi-edge tool needs to be switched; an edge switching path generation unit that calculates an edge switching path including a retracting path for switching the edge, the rotation direction and rotation amount of the multi-edge tool, and a returning path; and a tool path regeneration unit that binds the edge switching path to the tool path.

Numerical controller and control method to control a multi-edge tool

A numerical controller includes an information storage unit that stores, in association with identification information assigned to a tool, coordinate conversion information used to convert a coordinate value in a rotating coordinate system into a coordinate value in a reference coordinate system, an information acquisition unit that acquires, from a machining program, a coordinate value that indicates a movement path of the tool to which the identification information is assigned, and a coordinate conversion unit that performs coordinate conversion of the coordinate value indicating the movement path acquired by the information acquisition unit, based on the coordinate conversion information stored in the information storage unit.

Numerical controller and machine tool

A numerical control device according to an embodiment of the present disclosure is a numerical control device for controlling at least two oscillating drive axes which linearly drive so as to cause mutually differing targets to change speed regularly at a fixed period, based on a machining program, in which the numerical control device controls the at least two oscillating drive axes so as to keep fixed a phase difference of periodic variable components of the at least two oscillating drive axes.

Numerical control device and machine tool for controlling at least two oscillating drive axes

A numerical control device according to an aspect of the present disclosure controls, in accordance with a machining program, a machine tool that includes a plurality of machining systems performing machining by each causing a tool to act on a workpiece, and can perform tool oscillation that causes a relative speed of the tool in relation to the workpiece to periodically change in at least one of the machining systems, the numerical control device including: a condition change unit which, upon newly starting machining by one of the machining systems, in a case of another of the machining systems performing machining for which a presence/absence of the tool oscillation differs from the newly starting machining, changes a condition of the newly starting machining or the machining for which the presence/absence of the tool oscillation differs, from a condition derived from the machining program.

Numerical control device and machine tool

A numerical controller includes a position instruction generating unit configured to generate the position instruction; an oscillation instruction generating unit configured to generate the oscillation instruction; a position speed control unit configured to add the position instruction and the oscillation instruction to generate a synthesized instruction; and a current control unit configured to control movement of a tool or rotation of a spindle. The oscillation instruction generating unit includes a tracking error calculating unit configured to obtain and calculate an actual angle and an ideal angle of the spindle, and a frequency recalculating unit configured to recalculate the oscillation frequency or a rotational speed of the spindle based on the actual angle and the ideal angle. The current control unit controls the movement of the tool or the rotation of the spindle according to the recalculated oscillation frequency or rotational speed of the spindle.

Numerical controller performing oscillation cutting correcting spindle tracking error

A numerical controller performs machine learning to calculate tailstock pressing force to stabilize behavior of a workpiece during lathe machining and acquires, as state information, current tailstock pressing force. Then, the numerical controller acquires, as determination data, current vibration or displacement of the workpiece, or power consumption by tailstock pressing force, updates a value function based on the acquired determination data, and outputs an adjustment value of the state information based on the updated value function.

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Yamanashi, Japan

Toshihiro Watanabe