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公开(公告)号：DE9003679U1
公开(公告)日：1990-10-31
申请号：DE9003679
申请日：1990-03-29
Applicant: CHARMILLES TECHNOLOGIES S.A., MEYRIN, CH
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公开(公告)号：DE3321010C2
公开(公告)日：1988-12-22
申请号：DE3321010
申请日：1983-06-10
Applicant: CHARMILLES TECHNOLOGIES S.A., MEYRIN, CH
Abstract: A process and apparatus for monitoring machining conditions in a travelling wire EDM apparatus. The resistivity of the machining fluid in the machining zone is measured and is compared to a reference value. A signal is provided as soon as the measured resistivity increases beyond the reference value and the signal is used for decreasing or interrupting the machining current.
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公开(公告)号：ES2035896T3
公开(公告)日：1993-05-01
申请号：ES88113745
申请日：1988-08-24
Applicant: CHARMILLES TECHNOLOGIES S.A.
Inventor： BABEL, BERNARD , LEHMANN, HANS , JOSSERAND, JOSEPH , RUFFIN, JEAN ANDRE
Abstract: Machine for cutting by electrical discharge machining includes an electrode wire tensioned between and running betwee two guide heads each of which is mounted on an arm, one at least of the arms passing through a hole in one of the walls of a tank. The tank can move with respect to the arm and contains a machining liquid. A sealing plate 1 masks the hole in the tank and is linked by at least one seal 4 to the arm 5 through the wall. The wall 2 of the tank through which the arm passes slides along this plate. To prevent the forces due to friction and pressure arising between the plate 1 and the wall 2 and between the seal 4 and the arm 5 and acting asymmetrically on the arm through the wall being transmitted to the arm 5 and causing its deflection, a sheath 6 is mounted between the seal 4 and the arm 5 and encloses this arm without coming into contact with it.
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公开(公告)号：DE3100141C2
公开(公告)日：1992-07-23
申请号：DE3100141
申请日：1981-01-07
Applicant: CHARMILLES TECHNOLOGIES S.A., MEYRIN, CH
Inventor： BONGA, BENNO IBO, CRANS, VAUD, CH
IPC: B23Q5/22 , B23H7/00 , B23Q1/00 , B23Q1/38 , B23Q1/44 , B23Q1/48 , B23Q5/26 , B23Q5/36 , B23Q5/40 , G05B19/408
Abstract: A machine tool provided with a movable table supported by a stationary table, the movable table being displaceable relative to the stationary table in all directions and being supported by the stationary table by pressurized fluid bearing. The movable table is positioned by at least three actuators pivotally connected at one end to the stationary table and at their other end to the movable table such that the lengths of the actuators, controlled by an appropriate numerical control system, result in a predetermined position of the movable table relative to a reference position.
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Patent Agency Ranking
公开(公告)号：DE3311124C2
公开(公告)日：1990-10-04
申请号：DE3311124
申请日：1983-03-26
Applicant: CHARMILLES TECHNOLOGIES S.A., MEYRIN, CH
Inventor： BALLEYS, FRANCOIS, PETIT-LANCY, CH
Abstract: A travelling wire EDM apparatus wherein a workpiece is cut by electrical discharges by a travelling wire electrode, relative motion of the workpiece and the wire electrode being controlled by a numerical control unit which, in addition, controls transverse oscillations of the electrode wire relative to the workpiece along the cutting path. The energy of the electrical discharges is varied as a function of the amplitude of the transverse oscillations of the electrode wire relative to the workpiece such as to obtain maximum electrical discharge energy when the amplitude of vibration of the electrode wire is at a minimum and minimum energy when the amplitude of vibration of the electrode wire is at a maximum. The invention permits to achieve a good surface finish on the machined surface of the workpiece corresponding to the peak of the transverse electrode wire oscillation displacement being reached simultaneously with minimum electrical discharge energy, and thus achieves rough cutting and finish cutting of the workpiece in a single pass.
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公开(公告)号：DE3641701C2
公开(公告)日：1989-01-05
申请号：DE3641701
申请日：1986-12-06
Applicant: CHARMILLES TECHNOLOGIES S.A., MEYRIN, CH
Inventor： GIRARDIN, ROGER, VERNIER, CH
Abstract: An EDM device includes two support bars bearing on the same reference surfaces as the workpiece. Gibs are provided which engage into driving units able to displace them axially while holding them at a small distance under one support bar. The other support bar carries the receiving units wherein the gibs engage at the end of their stroke. Each driving unit may push the gib engaged therein against the lower surface of the respective bar. Whenever one or several such gibs are stopped under a part cut out of the workpiece, the part will lie thereon and remains fixed even after the electrode has completed a closed path cutout by electroerosion separating the cut-out part from the workpiece. The cut-out part may then be automatically removed by means of a mobile member equipped with a suction cup.
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公开(公告)号：DE8624648U1
公开(公告)日：1987-02-12
申请号：DE8624648
申请日：1986-09-15
Abstract: A device installed on a traveling wire EDM apparatus for straightening the electrode wire and providing the electrode wire with a needle point end for facilitating manual threading of the electrode wire through close tolerance closed wire guide members. The device takes the form of a pair of spaced-apart current conductive metallic studs, a heat shield being located at some intermediate portion between the metallic studs. The metallic studs are connected across a source of electrical power. A length of wire proximate its end is held manually over the metallic studs, with an intermediate portion of the wire disposed within the heat shield, and a pull is manually exerted on the wire beyond the metallic studs while the wire is being heated by electrical current flow through the wire between the two metallic studs. The wire is heat-straightened and ruptures at its portion within the heat shield, with sharp needle point ends being formed at the point of rupture.
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公开(公告)号：DE8612557U1
公开(公告)日：1986-11-06
申请号：DE8612557
申请日：1986-05-07
IPC: B23H7/10
Abstract: The rethreading mechanism of a travelling wire EDM apparatus has a scrap wire disposal mechanism for disposing of the unusable length of electrode wire, or scrap, remaining in the machining zone after accidental rupture of the wire. The wire scrap disposal mechanism takes the form of a shaft having a bifurcated end defining tines between which the wire passes. Upon accidental rupture of the wire, the bifurcated shaft is automatically set in rotation such as to wind the length of wire between the shaft bifurcated end and the point of rupture of the wire in a bundle around the bifurcated end, and simultaneously exert a pull on a length of unused wire, which is also caused to wind around the shaft bifurcated end, such as to straighten the wire upstream of the bifurcated shaft. After cutting off the wire, the bundle of scrap wire around the bifurcated shaft is pushed off such as to fall in a disposal chute.
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公开(公告)号：DE8613193U1
公开(公告)日：1986-11-20
申请号：DE8613193
申请日：1986-05-15
Abstract: In a travelling wire EDM apparatus having orientable swivelling wire guide and support members, or wire guide heads, the orientation of each wire guide head is effected by a pair of hydraulic slave cylinders each connected to a master cylinder. Each master cylinder has an input member displaceable along one direction and the desire inclination of each wire guide head is the resultant of the composite motions of the output members of the corresponding slave cylinders.
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