Boots – shoes – and leggings
Patent
1989-03-07
1991-06-18
Smith, Jerry
Boots, shoes, and leggings
36447404, 36447432, 219 6912, G05B 19403
Patent
active
050253638
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to an automatic programming method and, more particularly, to a method of automatically originating NC program data for wire-cut electric discharge machining.
DESCRIPTION OF THE BACKGROUND ART
In the origination of NC data for wire-cut electric discharge machining, automatic programming is performed in accordance with a procedure of the kind shown in FIG. 4 according to the prior art. Specifically, a machining profile is defined (step 1), followed by entry of data specifying an approach path for moving a wire electrode to a machining starting point on the machining profile (step 2). Next, the machining conditions necessary for wire-cut electric discharge machining, such as machining speed and wire offset diameter, are entered (step 3), as well as data specifying a departure path along which the wire electrode is retracted away from a machining end point on the machining profile (step 4). When entry of the data necessary for wire-cut electric discharge machining in accordance with the predetermined machining profile ends, a check is performed to determine whether to subject the workpiece to another machining operation (step 5). When machining is required, the processing from step 1 onward is repeated to again enter data specifying the machining profile, approach path, machining conditions and departure path. If it is not required to subject the workpiece to other machining, then the abovementioned entered data is used to successively originate NC program data for each and every machining profile (step 6).
FIG. 5 shows views for describing the data which specifies the approach path, in which FIG. 5(a) is for a case in which a machining starting hole P.sub.a is decided at a position of distance l.sub.1 on an extension ES of a first machining pass P.sub.F, a wire electrode 11 is fed at a cutting velocity F.sub.1 along the extension ES from the machining starting hole P.sub.a to a starting point (machining starting point) P.sub.s of the first pass, after which the wire electrode is moved along the first pass PF (extension approach pattern). FIG. 5(b) is for a case in which the machining starting hole P.sub.a is decided at a position of distance l.sub.1 on a tangent line TS to the first machining pass PF at the starting point (machining starting point) P.sub.s thereof, the wire electrode 11 is fed at the cutting velocity F.sub.1 along the tangent line TS from the machining starting hole P.sub.a to the machining starting point P.sub.s, after which the wire electrode 11 is moved along the first pass PF (tangent line approach pattern). FIG. 5(c) is for a case in which the machining starting hole P.sub.a is decided at a position of distance l.sub.1 on a tangent circle TC to the first machining pass PF at the starting point (machining starting point) P.sub.s thereof, the wire electrode 11 is fed at the cutting velocity F.sub.1 along the tangent circle TC from the machining starting hole P.sub.a to the machining starting point P.sub.s, after which the wire electrode is moved along the first pass PF (tangent circle approach pattern). FIG. 5(d) is for a case in which the machining starting hole P.sub.a is decided at a position of distance l.sub.1 on a normal line NS to the first machining pass PF at the starting point (machining starting point) P.sub.s thereof, the wire electrode 11 is fed at the cutting velocity F.sub.1 along the normal line NS from the machining starting hole P.sub.a to the machining starting point P.sub.s, after which the wire electrode 11 is moved along the first pass PF (normal line approach pattern).
FIG. 6 shows views for describing the data which specifies the departure path, in which FIG. 6(a) is for a case in which a wire departure point P.sub.a is decided at a position of distance l.sub.1 on an extension ES of a last machining pass PL, the wire electrode 11 is retracted at the cutting velocity F.sub.1 along the extension ES from the machining end point P.sub.e to the wire departure point P.sub.a (extension departure pattern). FIG. 6(b) is
REFERENCES:
patent: 4587608 (1986-05-01), Kishi et al.
patent: 4604705 (1986-08-01), Imanishi
patent: 4704687 (1987-11-01), Kishi et al.
patent: 4799143 (1989-01-01), Tanaka et al.
Nakajima Masatoshi
Seki Masaki
Takegahara Takashi
Fanuc Ltd.
Gordon Paul
Smith Jerry
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