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To keep an electrode guide from interfering with an object such as a workpiece during the workpiece processing period, in the present invention, a path-generating device of an electrical discharge machine that is provided with an electrode guide for supporting a rod-shaped electrode is configured so as to be equipped with: a shape data-reading unit (51) for reading the initial shape of the workpiece prior to processing and a target shape of the workpiece; an electrode-path-generating section (53) for generating an electrode path for moving the electrode laterally on the basis of the target shape of the workpiece; and a guide path-generating section (54) for generating an electrode guide path, which avoids interference between the electrode guide and the workpiece, on the basis of the initial shape of the workpiece.


Patent
Makino Milling Machine Co. | Date: 2017-01-18

Provided is a feed shaft control method, wherein a speed feedback loop having a speed controller (72) is disposed within a position feedback loop having a position controller (71), forming a cascade coupling, and an acceleration feedback signal which is outputted from a compensator (91) on the basis of an output signal of an acceleration detector (60) is subtracted from a torque instruction (r). Furthermore, the method implements control wherein a speed is acquired on the basis of the output signal of the acceleration detector (60), and a signal obtained by multiplying the acquired speed by a gain (Ka3) is added to a speed instruction (r) which is outputted from the position controller (71).


Patent
Makino Milling Machine Co. | Date: 2017-04-26

A control device (70) for a machine tool (1) that moves a tool relative to a workpiece and/or vice versa and machines said workpiece. Said control device (70) is provided with a display unit (28) that displays information related to the machine tool (1), a first-layer generation unit that generates a first layer that contains machining information related to the machining being performed on the workpiece, and a second-layer generation unit that generates a second layer that contains an image or handwritten note related to the machining information in the first layer. The display unit (28) displays an image consisting of the second layer superimposed onto the first layer.


Patent
Makino Milling Machine Co. | Date: 2017-04-26

A control device for a machine tool, said control device being provided with a display unit (28) that displays machining information and a display control unit (22) that generates an image to display on said display unit (28). The display control unit (22) is designed so as to divide up the display region of the display unit (28), generating a plurality of subregions (48a-48d, 50a, 50b). Via input from an operator, the sizes of said subregions (48a-48d, 50a, 50b) can be changed. The display control unit (22) changes the display format of the machining information in accordance with the machining information to be displayed and the sizes of the subregions (48a-48d, 50a, 50b).


Patent
Makino Milling Machine Co. | Date: 2017-04-26

Graphics representing a main-spindle-side structure (Ps) and a table-side structure (Pt) and graphics representing arrows (Ax, Ay, Az, Aa, Ab, Ac) indicating the movement directions of feed shafts are stored in a storage unit (18), and when switched to manual operation, a display computation unit (16) computes the orientations of said arrows with respect to the structure that moves, said structure being either the main-spindle-side structure (Ps) or the table-side structure (Pt), and computed graphics representing the structures and the arrows are displayed in a differentiated manner so as to make it evident which structure moves.


Patent
Makino Milling Machine Co. | Date: 2016-09-07

A machine tool facility (10) includes the following: machine tools (100A, 100B); a first pallet stocker (300A) in which a plurality of pallets are arranged in parallel with a predetermined space therebetween; a second pallet stocker (300B) in which a plurality of pallets are arranged in parallel with a predetermined space therebetween, and which is disposed in parallel with the first pallet stocker; a conveyance car (200) that conveys a pallet (P) in a direction parallel to the row of the pallets (P) of the first pallet stocker (300A); a first transfer device (210) for transferring the pallet between the first pallet stocker (300A) and the conveyance car (200); and a second transfer device (400) for transferring, by horizontal movement, the pallet (P) between the first pallet stocker (300A) and the second pallet stocker (300B).


Patent
Makino Milling Machine Co. | Date: 2016-11-02

A control apparatus (10) for controlling a machine tool (20) on the basis of a machining program is provided with a program analysis unit (22) which analyzes an input machining program (30), a process table creation unit (26) which, on the basis of the results of the analysis by the program analysis unit (22), creates a process table that sequentially lists processes according to the execution flow of the machining program (30), and a display unit (28) which displays the process table created by the process table creation unit (26).


Patent
Makino Milling Machine Co. | Date: 2016-11-02

This control device (70) for a machine tool (11) has a display unit (28) that displays an input screen via which machining information regarding machining to be performed on a workpiece is inputted and an input unit via which letters and/or numbers are inputted into machining-information fields on the input screen. When a machining-information field on the input screen is selected, the display unit (28) displays a first input-assistance screen corresponding to said field. Input-support buttons are laid out on said first input-assistance screen. When an input-support button is pressed, a second input-assistance screen is displayed, and via an operation performed in accordance with said second input-assistance screen, the aforementioned field is filled in.


Patent
Makino Milling Machine Co. | Date: 2016-05-04

The main spindle device for a machine tool is provided with: a bearing for rotatably supporting the main spindle; a bearing case for holding the bearing; a housing inside which the bearing case is disposed; and a stiffness-switching device, which supports the bearing case with respect to the housing and is able to switch the stiffness of the bearing case support between multiple levels. When the stiffness-switching device is supporting the bearing case at a low stiffness, the main spindle device is formed so that the bearing case slides with respect to the housing. A friction member is disposed on the area where the bearing case slides with respect to the housing.


Patent
Makino Milling Machine Co. | Date: 2016-01-13

A working machine feed axis control device: disposes a velocity feedback loop and forms a cascade coupling on the inner side of a location feedback loop; comprises a velocity gain setting apparatus (30) which multiplies the output of the velocity feedback look by a first gain (kv), and a location gain setting apparatus (31) which multiplies the output of the location feedback loop by a second gain (kp); subtracts the output of the velocity gain setting apparatus (30) and the output of the location gain setting apparatus (31) from a torque instruction (); and outputs the remaining torque instruction () to a subject to be controlled (27).

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