公开(公告)号：WO1989001378A1

公开(公告)日：1989-02-23

申请号：PCT/JP1988000782

申请日：1988-08-06

Applicant: FANUC LTD ,  ASO, Toshiyuki ,  ARAKAWA, Yasuo

Inventor： FANUC LTD

IPC: B23H07/10

CPC classification number: B23H7/10 ,  Y10T83/9292

Abstract: This invention provides a wire feeder for a wire-cut electric discharge machine, capable of retreating when an electric discharge machining is carried out a wire transfer belt from a position in which wires are automatically connected, whereby the wear of the belt and the fluctuation of the wire feed speed can be prevented. In order to carry out an automatic wire connecting operation, an air cylinder (27) for a wire feed mechanism (16) is driven, so that a second transfer belt (15') is moved from a position of retreat to a position of automatic connection via a parallel link mechanism (23, 25, 25', 25''), in which position the second transfer belt (15') is pressed against a first transfer belt (15). When a motor (M2) is actuated to cause these two belts to be turned, a wire electrode (5) held between the same belts is moved from the upstream side of a wire transfer path to the downstream side thereof to complete the automatic connection. When the air cylinder is thereafter deenergized, the second transfer belt is returned to the position of retreat by the resilient force of a spring (26), thus being separated from the first transfer belt. Consequently, the wire electrode and the two belts are put in a non-contacting state, whereby the wear of the wire and the fluctuation of the wire feed speed are prevented.

公开(公告)号：WO1988007429A1

公开(公告)日：1988-10-06

申请号：PCT/JP1988000338

申请日：1988-04-01

Applicant: FANUC LTD ,  ASO, Toshiyuki ,  HOSODA, Hiroshi

Inventor： FANUC LTD

IPC: B23H07/02

CPC classification number: B23H7/02

Abstract: This invention relates to a wire cut electric spark machine (10) equipped with an electric shock prevention means. A guide roller (34a) which is disposed in front of a recovery box (38) for recovering an electrode wire (30) that has passed through an electrical discharge zone (36) and has been used up is mounted onto a substrate (56) made of an electrically conductive material and is fixed to a machine frame (26) through an insulating plate (58). A leakage current that leaks to the substrate due to disturbance in the travel of the electrode wire is caused to flow to a safety circuit (50) through a lead wire (52) and the leakage current signal stops instantaneously the supply of power of a discharge power source device (51) so as to prevent in advance an accident such as electric shock.

公开(公告)号：WO1988001550A1

公开(公告)日：1988-03-10

申请号：PCT/JP1987000643

申请日：1987-08-31

Applicant: FANUC LTD ,  ASO, Toshiyuki ,  ISHIBASHI, Tamotsu

Inventor： FANUC LTD

IPC: B23H07/10

CPC classification number: B23H7/10

Abstract: In a wire cut electric discharge machine, a system for repairing a broken end of an electrode wire by cutting it with a cutter means in a repairing position distant from an electric discharge processing zone when the electrode wire is broken during an electric discharge processing operation, preventing the end portion of the electrode wire from being moved in accordance with the movement of the cutter means when the cutter means retreats from a wire cutting zone, and automatically tensing the portion of the electrode wire which is between the upper and lower heads in which wire guides are housed, to thereby automatically make preparations for the electric discharge processing of a work, said system being provided with an electrode wire feed means (40) capable of paying out and withdrawing the electrode wire (14), an electrode wire end detecting means (66), a relative transfer means for transferring the broken end of the electrode wire (14) to a position distant from the electric discharge processing zone, a cutter (60) for cutting and repairing the broken end of the electrode wire (14), and a wire receiving plate (61) for preventing the electrode wire from being moved in accordance with the movement of the cutter (60) when the cutter (60) retreats from the wire cutting zone.

公开(公告)号：WO1987001635A1

公开(公告)日：1987-03-26

申请号：PCT/JP1986000472

申请日：1986-09-12

Applicant: FANUC LTD ,  ASO, Toshiyuki ,  KITA, Yuki

Inventor： FANUC LTD

IPC: B23H07/02

CPC classification number: B23H7/02

Abstract: In order to prevent the water, which has entered a housing (1a) of an initial hole cutout apparatus (1) of a wire cut discharge machine, and the moisture, which has been condensed and deposited in droplet form in the housing (1a), from causing a mechanism and components in the housing (1a) to be rusted, and an electric leak to occur, an air inlet hose and an air discharge hose are connected to the housing (1a) of the initial hole cutout apparatus (1) so as to ventilate the interior of the housing (1a) and remove the moisture therefrom.

Abstract translation: 为了防止已经进入线切割排出机的初始孔切割装置（1）的壳体（1a）的水和已经以液滴形式冷凝并沉积在壳体（1a）中的水分， 由于使壳体（1a）中的机构和部件生锈，发生漏电，进气软管和排气软管与初始孔切断装置（1）的壳体（1a）连接， 以便使壳体（1a）的内部通风并从其中去除水分。

公开(公告)号：WO1987000467A1

公开(公告)日：1987-01-29

申请号：PCT/JP1986000372

申请日：1986-07-18

Applicant: FANUC LTD ,  OBARA, Haruki ,  ASO, Toshiyuki ,  KINOSHITA, Hiroshi ,  ISHIBASHI, Tamotsu

Inventor： FANUC LTD

IPC: B23H07/10

CPC classification number: B23H7/10

Abstract: An electric discharge machining apparatus of the wire-cutting type is equipped with a wire cutting unit between an upper wire guide member and a work table, the wire cutting unit being allowed to move in a horizontal direction to traverse a wire electrode (W) which downwardly extends with respect to the upper wire guide member from a wire passage of the upper wire guide member. The wire cutting unit comprises a base block (55), and a movable block (56) which can approach or separate away from the base block to define a slit (60) that can be opened or closed relative thereto and to define a nozzle hole (61). The slit extends in a horizontal direction in which the wire cutting unit moves to accept the wire electrode. The nozzle hole can be connected to the lower end of wire passage of the upper wire guide member, and is so formed as to inject a liquid toward the wire passage of the lower wire guide member, the liquid being supplied into the wire passage of the upper wire guide member. The wire cutting unit has a wire detector (66) for detecting an end of the wire electrode between the base block and movable block, and has wire cutting means (62) for cutting the wire electrode between the base block and the movable block.

公开(公告)号：WO1985004608A1

公开(公告)日：1985-10-24

申请号：PCT/JP1985000176

申请日：1985-04-08

Applicant: FANUC LTD ,  ASO, Toshiyuki ,  ISHIBASHI, Tamotsu

Inventor： FANUC LTD

IPC: B23H07/02

CPC classification number: B23H7/02

Abstract: In a device for forming an initial hole in a wire cut discharge machining apparatus which comprises a frame (42) mounted on a vertical slide (14) which vertically feeds an upper wire guide unit (28) that guides an electrode wire (30), an initial hole forming member (50) which can move up and down relative to the frame (42) and which has a rotary chuck (60) to hold a hollow electrode rod (58), electric switches (70, 72) which produce signals when the initial hole forming member (50) is at a position for forming an initial hole and is at a retracted position, and operation means (54) which moves the initial hole forming member (50) up and down, the improvement wherein so far as it is detected that the initial hole forming member (50) is located at a position to form the initial hole, the upper wire guide unit (28) is prevented from moving toward the initial hole forming member (50).

公开(公告)号：WO1991008854A1

公开(公告)日：1991-06-27

申请号：PCT/JP1990001649

申请日：1990-12-18

Applicant: FANUC LTD ,  ASO, Toshiyuki ,  KINOSHITA, Hiroshi ,  HIRAI, Toshio

Inventor： FANUC LTD

IPC: B23H07/10

CPC classification number: B23H7/10

Abstract: A wire piece recovery apparatus in a wire cut electric discharge machine, wherein waste wire pieces formed when a wire is cut off prior to an automatic wire connection are recovered without fail so as not to disturb the wire connection and the electric discharge machining. After the wire is cut off with a cutter (110) provided on an arm assembly of a wire connecting unit (80), the arm assembly is returned to a retracted position in a state where waste wire pieces formed by the cut-off are held between a spring member provided on a movable nozzle extension and a stationary nozzle extension. A suction nozzle (101) fixed to the main body (81) of the wire connecting unit is supplied with pressurized air to produce negative pressure in the suction nozzle and the vicinity of the bottom thereof. When the wire pieces are released, the wire pieces sucked into the nozzle are received in a receiver (102) installed on the main body of the wire connecting unit.

公开(公告)号：WO1991004823A1

公开(公告)日：1991-04-18

申请号：PCT/JP1990001132

申请日：1990-09-04

Applicant: FANUC LTD ,  ASO, Toshiyuki ,  KAJITORI, Toyotada ,  HIRAI, Toshio

Inventor： FANUC LTD

IPC: B23H07/10

CPC classification number: B23H7/10

Abstract: A wire tension control device mounted on the wire cutting electric discharge machine and capable of accurately controlling the wire tension. The device is provided with a wire tension detecting mechanism (70) supported by a slider (72) displaceable relative to the machine proper and having a displacement roller (73) displaceable jointly with said slider. A control unit (90), which receives output signals representing an actual displaced position of a displaceable roller from a linear sensor (80) measuring in a non-contact manner the distance between the displaceable roller and a reflecting mirror on the slider by the use of laser beams, supplies, to a powder clutch (60), excited electric current corresponding to a value obtained by deducting the actual value of sensor output signal corresponding to a set value of wire tension. A clutch applies a set degree of tension to the wire (50) while exerting braking force varying according to an actual wire tension upon the braking roller (44).

Abstract translation: 一种线张力控制装置，安装在线切割放电机上，能够精确控制线张力。 该装置设置有由相对于机器本体可移动的滑动器（72）支撑的线张力检测机构（70），并且具有可与所述滑块一起移位的位移辊（73）。 控制单元（90），其接收表示来自线性传感器（80）的位移辊的实际位移位置的输出信号，所述线性传感器（80）通过使用以非接触方式测量所述滑块上的位移辊和反射镜之间的距离 的激光束供给到粉末离合器（60），与通过扣除与线张力的设定值对应的传感器输出信号的实际值而获得的值相对应的激励电流。 当离合器施加根据制动辊（44）上的实际线张力而变化的制动力时，离合器对线（50）施加一定张力。

公开(公告)号：WO1989010228A1

公开(公告)日：1989-11-02

申请号：PCT/JP1989000390

申请日：1989-04-11

Applicant: FANUC LTD ,  ASO, Toshiyuki ,  HOSODA, Hiroshi

Inventor： FANUC LTD

IPC: B23H07/10

CPC classification number: B23H7/10

Abstract: This invention provides a wire recovery method which can let a wire storage drum exhibit its maximum wire storage capacity. A speed controller operating in response to an instruction from a numeric controller representing a target drum angular speed at a maximum radius, which is calculated in such a manner that a wire winding speed at a target maximum wire winding radius is in agreement with an instructed wire feed speed, drives a wire storage drum through a motor (S5, S6, S10), and the used wire is stored at the maximum radius position inside the drum. When the drum makes a turn (S9), an actual drum angular speed is controlled to the next target drum angular speed so that the wire can be wound at the instructed wire feed speed even at the next target radius obtained by reducing a target wire wind gap from the target maximum radius (S11, S5, S6, S10), and the wire is stored at the inner position of the maximum diameter. After a first wire recovery layer is formed spirally, a drum angular speed is controlled to a drum angular speed corresponding to a maximum radius. As a result, the wire can be laminated orderly inside the drum.

公开(公告)号：WO1989003743A1

公开(公告)日：1989-05-05

申请号：PCT/JP1988001089

申请日：1988-10-27

Applicant: FANUC LTD ,  ASO, Toshiyuki ,  ARAKAWA, Yasuo

Inventor： FANUC LTD

IPC: B23H07/10

CPC classification number: B23H7/10

Abstract: The present invention provides a wire connection completion detector which is used for a wire cut electric discharge machine and has high operational reliability. When a wire is clamped between a wire driving roller and a pinch roller during a wire connection operation, the wire travels with the roller rotation and a disc (4c) integral with a tension brake roller, which is driven by the travelling wire, rotates. A signal processing circuit (24) receives a pulse train from a photoelectric switch (5) that is generated in accordance with a black-and-white code pattern of the disc with the rotation of the disc, and outputs an H level output representing the completion of wire connection. If wire connection proves unsuccessful, on the other hand, no H level output is generated and wire connection is attempted once again.