Boots – shoes – and leggings
Patent
1988-01-07
1989-12-26
Ruggiero, Joseph
Boots, shoes, and leggings
3185681, 364192, G06F 1546, G05B 19403
Patent
active
048902349
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a method of modifying NC data and, more particularly, to an NC data modification method through which NC data in a format executable by an NC unit are modified into NC data having a different executable format.
BACKGROUND ART
In automatic programming for creating NC data using an automatic programming language such as APT 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 then defining a tool path using the 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, by using an NC data output table, into NC data comprising NC data (EIA codes or ISO codes) in a format capable of being executed by an NC unit. The NC data output table stores NC data output formats for various commands, such as a linear interpolation command, circular interpolation command and coordinate system setting command. By referring to the table, the part program is converted into NC data in the format to be executed and is then delivered as an output. For example, the following command format for linear interpolation is stored in the table to deal with linear interpolation: the table to deal with circular interpolation:
Ii
There are cases where it is desired to have machining, which is similar to that performed by a first numerically controlled machine tool already in operation, executed by a second numerically controlled machine tool of a type different from that of the first numerically controlled machine tool. If the NC data formats for both of the numerically controlled machine tools are the same when the above is the case, then the second numerically controlled machine tool can be controlled using the NC data of the first numerically controlled machine tool as it is.
If the NC data formats of the two numerically controlled machine tools are different, on the other hand, the NC data output table of the automatic programming apparatus is modified for the sake of the second numerically controlled machine tool, the NC data for the second numerically controlled machine tool are created using the already prepared part program based on the automatic programming language, and the second numerically controlled machine tool is controlled in accordance with these NC data.
However, the conventional method of dealing with NC data formats that differ is a troublesome one since the NC data output table of the automatic programming apparatus must be modified. In addition, there are cases where the part program based on the automatic programming language no longer exists. In such case the conventional method cannot be applied and the NC data form must be modified by a manual operation.
Accordingly, an object of the present invention is to provide an NC data modification method through which NC data having an executable format can be automatically changed to NC data of another type without using a part program based on automatic programming language.
DISCLOSURE OF THE INVENTION
Even if the formats of first NC data and second NC data differ, in most cases they differ only in terms of G codes, M codes or coordinate command codes. Accordingly, a G-code conversion table (GTB) giving the correlation between the G codes of the first NC data and second NC data, an M-code conversion table (MTB) giving the correlation between the M codes of the first NC data and second NC data, and a coordinate command code conversion table (PTB) giving the correlation between coordinate command codes (X, Y, Z, I, J, K codes) of the first NC data and second NC data are preregistered in a memory as conversion tables for converting the first NC data into the second NC data, and the format of the first NC data is changed to the format of the second NC data by making use of these conversion tables (GTB, MTB, PTB).
BRIEF DESCRIPTION OF THE DRAW
REFERENCES:
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patent: 4591968 (1986-05-01), Nozawa et al.
patent: 4692872 (1987-09-01), Kiya
Onishi Yasushi
Tanaka Kunio
Fanuc Ltd.
Ruggiero Joseph
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