Boots – shoes – and leggings
Patent
1990-04-19
1992-08-11
Smith, Jerry
Boots, shoes, and leggings
364188, 36447424, 364191, G05B 1918
Patent
active
051385570
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
This invention relates to a method of inserting a corner shape and, more particularly, to a corner shape insertion method for inserting a corner shape such as a chamfered or rounded corner at a corner between figure elements of a profile comprising a plurality of figure elements.
DESCRIPTION OF THE RELATED ART
In an automatic programming system for creating NC data using an automatic programming language such as APT (automatically programmed 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"), and defining a profile using these defined points, straight lines and circular arcs (referred to as "motion statement definition"), and
(b) the part program based on the automatic programming language is subsequently converted into NC data, which comprises NC data (EIA codes or ISO codes) in a format capable of being executed by an NC unit.
In such an automatic programming system, a profile OLF comprising figure elements S1-S3 illustrated in FIG. 11 is defined by the following part program:
______________________________________ P.sub.1 = x.sub.1, y.sub.1
P.sub.2 = x.sub.2, y.sub.2
P.sub.3 = x.sub.3, y.sub.3
S.sub.1 = P.sub.1, P.sub.2
S.sub.2 = P.sub.2, P.sub.3
S.sub.3 = P.sub.3, P.sub.1
. . . The foregoing is a figure
definition portion.
S.sub.1
S.sub.2
S.sub.3 . . . The foregoing is a profile
definition portion.
PEND . . . Program end
______________________________________
to insert roundness at corners E.sub.1 -E.sub.3 between mutually adjacent
figure elements: For example, in order to insert roundness of radius
r.sub.1 at the corner E.sub.2 between elements S.sub.1, S.sub.2, the
operator, by a prescribed operation, places the system in a rounding input
mode, designates the corner E.sub.2 in the rounding input mode and
thereafter inputs a circular arc dimension (radius r.sub.1). When this is
done, the system defines the profile definition portion of the part
program as
rounding is disposed between the two linear elements S.sub.1, S.sub.2
where roundness is inserted. Though the foregoing is for a case where a
roundness arc is inserted at a corner, the operation would be similar in a
case where a chamfered shape is inserted.
There are cases where a roundness arc having the same dimensions, or a chamfer having the same dimensions, is inserted at all corners within predetermined limits of a profile. In such cases, the conventional method is such that the corners within the predetermined limits must be designated one at a time, after which the same numeric value must be entered in response to a message calling for input of dimensions. A problem that arises is that the operation for inserting the corner shapes requires an exorbitant amount of time.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a corner shape input method through which the insertion operation can be performed quickly and easily when a chamfer having the same dimensions or a roundness having the same dimensions is inserted at all corner portions within predetermined limits.
In accordance with the present invention, the foregoing object is attained by the following method. Profile limits of a profile in which a corner shape is to be inserted are specified by designating two figure elements constituting the beginning and end of an insertion portion of the profile. An angle is obtained between those mutually adjacent figure elements in the insertion portion; (within the limits of the profile). Finally a corner shape of predetermined is inserted dimensions between the mutually adjacent figure elements if the angle defined by the mutually adjacent figure elements is within a set angle.
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 portions of a menu chart;
FIG. 3 is a fl
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Arakaki Takeshi
Seki Masaki
Takegahara Takashi
Fanuc Ltd
Smith Jerry
Trammel Jim
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