公开(公告)号：WO1991015325A1

公开(公告)日：1991-10-17

申请号：PCT/JP1991000454

申请日：1991-04-05

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

Inventor： FANUC LTD

IPC: B23H07/36

CPC classification number: B23H7/36 ,  B23H1/10 ,  Y10T137/86236

Abstract: A liquid level regulator which can regulate easily and accurately a liquid level in a discharge machining tank. The regulator includes a discharge pipe (10) communicating with a machining solution discharge port (3) of a discharge machining tank (1) and a regulation pipe (20) which fits slidably into the discharge pipe (10). An O-ring (30) is discharged in an annular groove in a lower part of the outer peripheral wall of the regulation pipe to be brought into pressure contact with the inner peripheral surface of the discharge pipe. When an operator holds a rod (40) projecting upward from the regulation pipe, slides the regulation pipe with respect to the discharge pipe (21) and positions its upper open end (21) to a predetermined height, the regulation pipe is held at this height by the O-ring. When a machining solution is supplied into the machining tank and the liquid level reaches the upper end of the regulation pipe, the machining solution overflows from the machining tank through the upper end of the pipe and is discharged outside the machining tank from the upper end of the pipe through the regulation pipe and the discharge pipe. Then, the supply of the machining solution is stopped and the liquid level regulation is completed. Leak of the machining solution from the machining tank is prevented by the O-ring and a substantial drop of the liquid level does not occur.

公开(公告)号：WO1991000160A1

公开(公告)日：1991-01-10

申请号：PCT/JP1990000682

申请日：1990-05-28

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

Inventor： FANUC LTD

IPC: B23H07/02

CPC classification number: B23H7/101

Abstract: A wire cut electric discharge machining device provided with a working liquid supply device capable of supplying working liquid in sufficient quantity to permit wire splicing stably even while the finishing machining is being performed. At the time of rough machining, a first flow regulating valve provided in a first pipe line (3), as well as a second flow regulating valve (10) and an on-off valve (11) respectively provided in a second pipe line (4) are fully opened, and working liquid is injected via nozzles (5, 9) connected to respective pipe lines. At the time of finishing machining, the openings of the first and the second flow regulating valves are throttled. At the time of wire splicing, while the on-off valve in the second pipe line is fully closed, an on-off valve (7) provided in a bypass duct line (8) and fully closed at the time of rough machining and at the time of finishing machining is fully opened, whereby the working liquid jet flows in sufficient quantity to securely guide a wire electrode is injected via jet nozzle communicating with bypass pipe line and mounted to the upper nozzle regardless of the opening of the first flow regulating valve that varies from the time of rough machining to the time of finishing machining.

公开(公告)号：WO1987001637A1

公开(公告)日：1987-03-26

申请号：PCT/JP1986000473

申请日：1986-09-12

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

Inventor： FANUC LTD

IPC: B23H07/10

CPC classification number: B23H7/10

Abstract: A device of simple construction for detecting the completion of automatic connection of the wire electrode (W) in a wire cut electric spark machine. Electricity is supplied from a feeding unit (43) to the wire electrode (W) via a contactor (32) at the time of the automatic connection, and the wire electrode (W) that is supplied comes into contact with a steel plate (44) provided at a unit fed with electricity arranged on the side of taking out the wire electrode (W). Then, the potential of the steel plate (44) at the unit fed with electricity rises, by which the completion of the connection is detected.

公开(公告)号：WO1986001445A1

公开(公告)日：1986-03-13

申请号：PCT/JP1985000458

申请日：1985-08-16

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

Inventor： FANUC LTD

IPC: B23H07/02

CPC classification number: B23H7/101

Abstract: A wire cutting discharge processing machine, in which a workpiece (W) is discharge-processed by an electrode wire (18) moving between upper and lower wire guides having a cooling liquid supply passage (62). This machine is provided with a throttle valve (68), which is set in a flow passage (66) branching from a main electrode wire-cooling flow passage (64) communicated with the cooling liquid supply passage (62), and which is adapted to regulate the cross-sectional area of the flow passage in accordance with the pressure of the cooling liquid flowing from the cooling liquid supply passage (62) thereinto. The cooling liquid passed through the throttle valve (68) is distributed around an electrode pin (42) in the wire guides to cool the same.

公开(公告)号：WO1984004066A1

公开(公告)日：1984-10-25

申请号：PCT/JP1984000197

申请日：1984-04-18

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

Inventor： FANUC LTD

IPC: B23P01/12

CPC classification number: B23H7/101

Abstract: A working fluid injection nozzle for a wire-cut electrical discharge machine comprises a first tubular member (15) which has a hollow portion through which an electrical discharge machining wire electrode extends in the axial direction thereof, and which is adapted to allow a working fluid to pass along the wire electrode; a soft tubular member (16) attached to the free end of the first tubular member (15); and a second tubular member (17) which supports the soft tubular member (16) by pressing it toward the center of the axis thereof, and is movable along the axis. The inner diameter of the soft tubular member (16) can be varied to provide adjustment by moving the second tubular member (17) along the axis thereof.

Abstract translation: 一种用于线切割放电机的工作流体注入喷嘴包括：第一管状部件（15），其具有中空部分，放电加工线电极沿其轴向延伸，并且适于允许工作流体 沿着线电极传递; 附接到第一管状构件（15）的自由端的软管状构件（16）; 以及第二管状构件（17），其通过将软管状构件（16）朝向其轴线的中心挤压而支撑，并且可沿轴线移动。 可以改变软管状构件（16）的内径，以通过使第二管状构件（17）的轴线移动来提供调节。

公开(公告)号：WO1992005005A1

公开(公告)日：1992-04-02

申请号：PCT/JP1991001215

申请日：1991-09-12

Applicant: FANUC LTD ,  SAKURAGAWA, Tomonobu ,  ASO, Toshiyuki

Inventor： FANUC LTD

IPC: B23H07/20

CPC classification number: G05B19/40937 ,  B23H7/065 ,  B23H7/20 ,  G05B2219/33002 ,  G05B2219/37081 ,  G05B2219/45221 ,  Y02P90/265

Abstract: A method of automatically retrieving working conditions in an electric discharge machine, wherein the said method is built up on the basis of an expert system and, even by an unskilled operator, optimal working conditions in the electric discharge machine can be set. A source knowledge base (6) prepared on the basis of the knowledge and experience of an expert (5) an including data on working conditions and production rules is converted into an object knowledge base (3) by a compiler (4), and subsequently, the knowledge base (3) together with an inference engine (2) are stored in a computer-incorporating type numerical control device (10) equipped on the electric discharge machine. When the operator (1) inputs the retrieving conditions including the diameter of the wire, the material quality of the work, the plate thickness of the work, the desirable mean working speed, the surface roughness, the working accuracy and the like via a manual input data device (25) in order to perform automatic retrieving of the working conditions, the inference engine successively processes the production rules relating to the retrieving conditions while utilizing the data on the working conditions relating to the production rules, retrieves the working conditions suitable for the retrieving conditions and displays them on a display screen.

公开(公告)号：WO1992004154A1

公开(公告)日：1992-03-19

申请号：PCT/JP1991001189

申请日：1991-09-06

Applicant: FANUC LTD ,  ASO, Toshiyuki ,  ENAMI, Masato ,  HOSODA, Hroshi

Inventor： FANUC LTD

IPC: B23H07/36

CPC classification number: B23H7/36

Abstract: A working liquid storage device equipped on an electric discharge machine for working on a workpiece immersed in a working liquid in an electric discharge bath can automatically, reliably discriminate the completion of storage of the working liquid in the bath, and comprises: a bellows type extendable pipe (32) provided in the bath (31) for variably setting the liquid level of the working liquid; and a tactile sensor (35) being high in operational stability and provided in a connecting pipe (34) communicating with the extendable pipe and disposed outwardly of the bath. When the liquid level of the working liquid rising as the working liquid is supplied into the bath exceeds a level set by the extendable pipe, the working liquid flows into the extendable pipe and the connecting pipe through the top open end of the extendable pipe. The tactile sensor detects it to produce a detection signal. When receiving this detection signal via a cable (36) provided outwardly of the bath, a programmable machine controller (21) discriminates the completion of storage of the working liquid in the bath.

Abstract translation: 配置在放电加工机上的工作液体储存装置可以在浸没在放电槽中的工作液体中的工件上工作，可以自动地可靠地区分浴中工作液体的储存完成，并且包括：波纹管型可延伸 设置在所述浴（31）中的用于可变地设定所述工作液体的液面的管道（32） 以及具有高操作稳定性的触觉传感器（35），并且设置在与所述可延伸管连通并设置在所述槽的外侧的连接管（34）中。 当工作液体供应到浴中时上升的工作液体的液位超过由可伸缩管设定的水平，工作液体通过可延伸管的顶部开口端流入延伸管和连接管。 触觉传感器检测到它产生检测信号。 当通过设置在浴槽外部的电缆（36）接收该检测信号时，可编程机器控制器（21）区分在浴中工作液体的存储完成。

公开(公告)号：WO1991004822A1

公开(公告)日：1991-04-18

申请号：PCT/JP1990001131

申请日：1990-09-04

Applicant: FANUC LTD ,  ASO, Toshiyuki ,  SAKURAGAWA, Tomonobu ,  HIGASHI, Izumi

Inventor： FANUC LTD

IPC: B23H07/10

CPC classification number: B23H7/105

Abstract: A wire guide assembly of wire cutting electric discharge machine which improves precision in working while preventing variation in wire tension, however, is simple in structure. When the supply of compressed air to an air actuator (60) at the start of discharge cutting subsequent to wire connection is suspended and a plunger (62) of the actuator is energized to the side of the wire guide by a spring (63), a movable guide member (44) is pressed to a stationary guide member (43) by the tip of the plunger and a wire path (50) through which the wire (10) is loosely passed is formed between both guide members. During discharge cutting, the wire is retained in the wire path while spaced apart from both guide members with a gap (b) at a position (a) in which the wire lies nearest both guide members, whereby no slide friction is caused between the wire conveyed along the wire path and guide members. Flowing of processing fluid is expedited and no work chips stay between the wire and guide members. As a result, the wire is free of variation in tension and precision in working is increased.

公开(公告)号：WO1990000950A1

公开(公告)日：1990-02-08

申请号：PCT/JP1989000681

申请日：1989-07-05

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

Inventor： FANUC LTD

IPC: B23H07/10

CPC classification number: B23H7/104

Abstract: A method of controlling wire tension of a wire-cut discharge machining apparatus to avoid break in the wire by preventing the wire tension from changing excessively because of abnormal operation of an electromagnetic powder brake when the tension to the wire is applied, removed or is changed. When it is judged that the practical wire tension may change excessively based on the comparison of the presently instructed wire tension and a newly instructed wire tension, the processing is repeated to add or subtract the upper-limit change quantity (Δt), which has been set in advance to a value that will not excessively change the wire tension, to or from a present desired wire tension (tO) at a predetermined period (U) until the desired wire tension reaches the instructed wire tension (tn). The electromagnetic powder brake undergoes the braking operation with an operation voltage corresponding to a desired wire tension that gradually changes, and the practical wire tension gradually changes until the instructed wire tension is reached.

公开(公告)号：WO1989003271A1

公开(公告)日：1989-04-20

申请号：PCT/JP1988001052

申请日：1988-10-15

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

Inventor： FANUC LTD

IPC: B23H07/10

CPC classification number: B23H7/10

Abstract: This invention provides a wire driving apparatus for a wire electric discharge machine, which is capable of carrying out a wire connecting operation smoothly with a single driving power source, and preventing the abrasion of a belt and variations in wire feeding speed. During a wire connecting operation, a lower belt portion (3), which is supported via links (33, 34, 36, L) so that it can freely swing, is moved toward an upper belt portion (2) by the operations of air cylinders (10, 12), so that belts (21, 31) of these two belts portions come into press contact with each other. Wires are transferred by these two belts which are moved by the rotational force, which is transmitted via gears, of a wire driving roller (4) and connected together. After the wire connecting operation has been completed, the lower belt portion is moved to a position in which it is spaced from the wires. During this time, the upper belt portion is also spaced from the wires, and the transmission of power from the wire driving roller to the lower belt portion is stopped.