Boots – shoes – and leggings
Patent
1989-08-21
1991-11-19
Smith, Jerry
Boots, shoes, and leggings
364188, 364192, 364514, 395135, B23Q 1522
Patent
active
050670875
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a composite-figure definition method and, more particularly, to a composite-figure definition method for combining already defined first and second figures to define a new figure.
2. DESCRIPTION OF RELATED ART
In an automatic programming system for creating NC data using an automatic programming language such as APT (automatic programming tools) or FAPT,
(a) a part program based on the automatic programming language is created by defining points, straight lines and circular arcs using simple symbols (this is referred to as "figure definition"), defining a profile using the defined points, straight lines and circular arcs, and then defining a tool path along the profile (referred to as "motion statement definition"), and
(b) the part program based on the automatic programming language is subsequently converted into NC data comprising NC data (EIA codes or ISO codes) in a format capable of being executed by an NC unit.
For example, in the creation of a part program for moving a tool along a part profile 1 comprising straight lines S.sub.1 -S.sub.4 shown in FIG. 10, figure definition is performed by defining straight lines S.sub.1 -S.sub.4, which are necessary for defining the part profile 1, as follows using a keyboard or tablet: ##EQU1##
Thereafter, these defined figure elements (which are displayed on a CRT screen) are picked in order, e.g., etc., of the part profile 1 are designated by motion statement definition to define a tool path along which a tool is moved.
In the creation of a part program for moving the tool along a part profile 2 comprising straight lines S.sub.6 -S.sub.8 shown in FIG. 10, figure definition is performed by defining straight lines S.sub.6 -S.sub.8, which are necessary for defining the part profile 2, as follows: ##EQU2## Thereafter, these defined figure elements are picked in order, e.g., statement definition.
In the foregoing, is x.sub.1 ; is y.sub.1 ; and and (x.sub.4,y.sub.4).
In defining a part profile, there are instances where figures (profiles) already defined are combined to define a new figure. Even in a case such as this, the prior art is such that the figure elements constituting the profiles must be defined one at a time, after which the elements constituting the profiles must be designated in order, as set forth above.
By way of example, assume that a new FIG. 3 (FIG. 11) is defined by combining the already defined first FIG. 1 and second FIG. 2 shown in FIG. 10. In such case, straight-line elements S.sub.i must be designated one at a time in order, namely in the manner S.sub.1 .fwdarw.S.sub.2 .fwdarw.. . . .fwdarw.S.sub.8, along the profile of the desired combined figures by means of a graphic cursor GCS.
Thus, a problem with the composite-figure definition method of the prior art is that despite the fact that the basic figures are already defined in terms of profile, the profile definitions of the basic figures cannot be utilized.
Accordingly, an object of the present invention is to provide a composite-figure definition method in which the profile definitions of basic figures can be utilized to enable composite definition of figures quickly and easily.
SUMMARY OF THE INVENTION
In a case where already defined first and second figures are combined to define a new figure, it is determined whether the first and second figures have a point of intersection. It they do not, an error is displayed. If they do have a point of intersection, all closed figures formed by combining the first and second figures are successively displayed and a composite figure is defined by selecting a desired closed figure.
In accordance with the composite-figure definition method of the present invention, already defined profiles can be utilized to enable definition of a composite figure quickly and easily.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram of an apparatus for practicing the present invention;
FIG. 2 is a view for describing the principal portion of a menu chart;
FIG. 3 is a flowchar
REFERENCES:
patent: 4556957 (1985-12-01), Ichikawa
patent: 4618924 (1986-10-01), Hinds
patent: 4648028 (1987-03-01), Deklotz et al.
patent: 4697249 (1987-09-01), Kishi et al.
patent: 4792889 (1988-12-01), Kragelin et al.
patent: 4868781 (1989-09-01), Kimura et al.
Arakaki Takeshi
Seki Masaki
Takegahara Takashi
Fanuc Ltd.
Muir Patrick
Smith Jerry
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