Fanuc Corporation

Hiroyuki Abe

Kaoru Hiraga

Yuki Kita

Toshiyuki Ogata

Koji Suzuki

Hiroyuki Kawamura

Shinji Okuda

Yoshinori Makino

Yushi Takayama

Shouta Irie

Hirotsugu Kasai

Hiroyuki Furukawa

A wire electrical discharge machine for performing electrical discharge machining on a workpiece to be machined by applying voltage to an electrode gap formed between a wire electrode and the workpiece to generate electrical discharge at the electrode gap under predetermined machining conditions while conveying the wire electrode along a transfer path, includes: a wire breakage detector for detecting a breakage of the wire electrode; a position calculator for calculating the breakage position of the wire electrode in the transfer path; and an adjustment unit for adjusting the machining conditions when the breakage position is in a predetermined section of the transfer path.

Wire electrical discharge machine and machining condition adjustment method

A program creation apparatus includes: a display unit configured to display a machining shape of a workpiece that is input by a user through an input unit; a core fixing portion setter for setting a predetermined range including a point on a machining line between the workpiece and a core to be formed by machining the workpiece, specified on the display unit with the machining shape of the workpiece displayed thereon, by the user through the input unit, as a core fixing portion; and a program creator for creating a program that causes the wire electrical discharge machine to fix the core to the workpiece in the set core fixing portion while machining the workpiece according to the input machining shape thereof.

Program creation apparatus and program creation method in program creation apparatus

A dielectric working fluid processor for processing dielectric working fluid used in a wire electrical discharge machine includes: a dirty liquid tank for storing dielectric working fluid containing machining swarf; a filter for removing machining swarf from the dielectric working fluid in the dirty liquid tank; a clean liquid tank for storing the dielectric working fluid from which the machining swarf has been removed by the filter; a pump for supplying dielectric working fluid from the dirty liquid tank to the filter; an inverter for controlling electric power to be supplied to the pump; a pump controller for controlling the rotation speed of the pump by varying the frequency of electric power supplied from the inverter to the pump; and a feed pressure obtainer for obtaining the feed pressure of the dielectric working fluid supplied from the pump to the filter, based on the frequency of the electric power.

Dielectric working fluid processor and control method of dielectric working fluid processor

A program generating apparatus for generating an NC program for controlling a wire electrical discharge machine includes a machining order acquisition unit configured to acquire order in which a plurality of machining paths should be machined, the order being determined based on a predetermined rule, and a program generating unit configured to automatically change the order acquired by the machining order acquisition unit, so as to perform fixing process for fixing a core, which is produced during machining of a workpiece, to the workpiece by depositing a component of a wire electrode, prior to performing uncut process for leaving part of the core uncut, and generate an NC program for machining the machining paths in the changed order.

Program generating apparatus and program generating method

A wire electric discharge machine configured to interrupt a program operation if a connection hole for connecting a wire electrode is located in a position deviated from a wire electrode connection position on a machining path so that connection by a wire electrode connection unit is not completed and store the wire electrode connection position, and to restart the program operation after performing machining such that the wire electrode is returned to the wire electrode connection position by automatic control and machining to widen a machined groove portion in the wire electrode connection position, when subjected to a re-machining operation after manual connection of the wire electrode in the position of the connection hole.

Wire electric discharge machine and method for correcting wire electrode connection hole position

A wire electrical discharge machine includes: a supporting member for relatively moving a wire electrode relative to a measurement target; servomotors for moving the supporting member; a setting changer for changing the setting of a directive speed; and a motor controller that controls the servomotors in performing move-and-contact detection for detecting contact between the wire electrode and the measurement target by moving the two relative to each other, so that the wire electrode is moved relative to the measurement target based on the directive speed changed and specified by the setting changer.

Wire electrical discharge machine and measuring method

A wire electric discharge machine includes a machine learning device that learns an adjustment of an axis feed command of the wire electric discharge machine. The machine learning device determines an adjustment amount of the axis feed command by using data related to a movement state of an axis, and adjusts the axis feed command based on the determined adjustment amount of the axis feed command. Subsequently, the machine learning device performs machine learning of the adjustment of the axis feed command based on the determined adjustment amount of the axis feed command, the data related to the movement state of the axis, and a reward calculated based on the data related to the movement state of the axis.

Wire electric discharge machine having movable axis abnormal load warning function

A wire electrical discharge machine for detecting an end face of an object, configured so that when a contact detection movement is started and if contact between the wire electrode and the workpiece is detected, positions in which the contact between the wire electrode and the workpiece is detected are stored as contact detection positions and that when a non-contact detection movement is then started and if non-contact between the wire electrode and the workpiece is detected, positions in which the non-contact between the wire electrode and the workpiece is detected are stored as non-contact detection positions. When it is determined whether or not a set number of times of execution is reached and if the set number of times of execution is reached, a reference position is obtained by adding the radius of the wire electrode and a clearance of the wire guide to an end face determination position.

Wire electrical discharge machine

A machining path drawing apparatus for a wire electric discharge machine that draws a machining path for the wire electric discharge machine having a core fixation function includes a machining shape information calculation unit for analyzing a machining program to determine machining shape information, a core fixation function operating region detection unit for determining a region where the core fixation function operates in the machining shape information, and a machining path drawing unit for drawing the region where the core fixation function operates with a display attribute changed when a machining path is drawn based on the machining shape information.

Machining path drawing apparatus for wire electric discharge machine

A machine having a function for adjusting the position of mechanical origin of a moving part () that is driven by a servo motor equipped with a position detector, comprising a reference counter () for counting the value detected by the position detector, a storage unit () for storing the capacity of the reference counter of when the moving part is moved in a predetermined direction and is positioned at the position of mechanical origin, a reference counter reading unit () for reading the value of the reference counter of when the moving part is positioned, a counter capacity reading unit () for reading the counter capacity of the reference counter, and an adjustment amount calculation unit () for calculating the amount of adjusting the position of mechanical origin based on the value of the reference counter and on the capacity of the reference counter.

Method of adjusting the position of origin of a machine and a machine having a function for adjusting the position of origin

A machining program used for machining a workpiece with a wire-cut electric discharge machine is used for measuring a shape of the workpiece. A wire electrode moved in a direction away from the workpiece by an offset command for machining is moved close to the workplace in workplace measurement after the machining. In other words, the wire electrode is moved in an opposite direction to an offset direction for the machining. Then, an end face position of the machined workpiece detected by a position of the wire electrode when the wire electrode comes in contact with the workpiece.

Wire-cut electric discharge machine having workpiece measuring mechanism

When a wire electrode is arranged along a traveling path by manual operation, a motor Mfor feeding the wire electrode to a workpiece is driven in response to a predetermined torque command from a control section with a switch SWon a side a. The wire electrode is connected, and a motor Mfor delivering the electrode from the wire is driven at a predetermined speed, whereby the electrode is run. Then, the switch SWis shifted to a side b and a switch SWto the side a, and the motor Mis subjected to torque control such that a tension on the wire electrode detected by a tension detector is equal to a command tension. When a variation of the tension on the wire electrode is converged, the switches SWand SWare shifted to the side b, speed control of the motor Mis performed so that detected tension is equal to the command tension, and electric discharge machining is started.

Wire-cut electric discharge machine having wire tension control function

A speed region of a motor is divided into a region lower than a first switch speed VS, a region higher than a second switch speed VSand a region between the first and second switch speeds. An abnormal load determination level to be compared with an estimated load obtained by an observer is set for each of the regions. An abnormal load determination level ALapplied when an acceleration exceeds a threshold value is set. The abnormal load determination level ALis used for comparison with the estimated load until a predetermined period of time elapses after the acceleration to be commanded to the motor, which once exceeded the threshold level, drops. In other cases, the estimated load is compared with the abnormal load determination level having a value according to the speed. If the estimated load exceeds the compared abnormal load determination level, it is judged that a collision is detected.

Machine having movable unit to be controllably driven by servo motor

A machining configuration drawing apparatus includes a drawing unit for drawing a machining configuration and a present machining position, a setting unit for setting a display area in an overall drawing area, a division unit for dividing the overall drawing area into a plurality of display areas based on the set display area, and a selection unit for selecting a drawing region drawn by the drawing unit from a plurality of drawing regions. The selection unit selects a drawing region in which the present machining position exists. Further, the drawing unit draws a machining configuration and a present machining position of the selected drawing region.

Machining configuration drawing apparatus and machining configuration drawing method

A wire electric discharge machine capable of adjusting spacing between a nozzle and a workpiece without manual operation and without causing damage to a machine and a workpiece. The wire electric discharge machine includes wire supply apparatus for supplying a wire electrode through the wire guide toward the workpiece; wire supply-amount measuring apparatus for measuring a supply amount of the wire electrode; wire front-end detecting apparatus for detecting a front end of the wire electrode being supplied by the wire supply apparatus at a wire front-end detecting position; and wire contact detecting apparatus for detecting contact of the front end of the wire electrode with an upper surface of the workpiece. A position of the upper surface of the workpiece is determined based on the wire front-end detecting position and a supply amount of the wire electrode measured by the supply amount measuring apparatus from when the front end of the workpiece is detected by the wire front-end detecting apparatus till the contact of the front end of the wire electrode with the upper surface of the workpiece is detected by the wire contact detecting apparatus.

Growing community of inventors

Yamanashi, Japan

Hiroyuki Abe