Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1989-10-16
1991-08-27
Ip, Paul
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
318574, 318572, 36447422, 36447417, G06F 1546
Patent
active
050436457
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an NC statement preparing system of an interactive numerical control device, and more particularly, to an NC statement preparing system in which an NC statement for the use of a tool capable of multi-directional cutting can be prepared.
BACKGROUND ART
In an interactive numerical control device, when cutting a region which must be cut several times by a turning tool, the tool is usually manufactured with an edge on only one side thereof Accordingly, the cutting is made always in one direction, and the tool is operated so that it is returned to a machining start point by a rapid traverse after the cutting.
FIG. 4 shows an example of a passage of a conventional machining program. In FIG. 4, numerals 1 and 3 denote a workpiece and a tool for one-way cutting, respectively. The axes of abscissa and ordinate represent the coordinate Z- and X-axes, respectively. As shown in FIG. 4, a passage for the tool 3 is made in the order P1, P2, P3, P4, P5, P6. In the tool passage, the full line indicates cutting, and the broken line indicates a rapid traverse.
When using this machining passage, however, if the tool is a turning tool capable of multi-directional cutting, the tool is often moved unnecessarily, thus prolonging the machining time and requiring a long NC statement.
SUMMARY OF THE INVENTION
The present invention has been contrived in consideration of the above circumstances, and an object thereof is to provide an NC statement preparing system in which an NC statement for the use of a tool capable of multi-directional cutting can be prepared.
To solve the above problem, according to the present invention, there is provided an NC statement preparing system which is characterized by comprising a means for preparing an interactive program, a discriminating means for determining whether a tool is a one-way cutting tool or a tool capable of multi-directional cutting, and an NC statement preparing means for preparing an NC statement by choosing between an NC statement composed of a tool passage for the one-way cutting tool and an NC statement composed of a tool passage for the multi-directional cutting, in an NC statement preparing system of an interactive numerical control device.
The tool capable of multi-directional cutting has cutting edges in both directions and can cut in a plurality of directions, and a machining passage can be chosen in consideration of this point.
Thus, it is determined whether the tool is a one-way cutting tool or a tool capable of multi-directional cutting, and if the tool is capable of multi-directional cutting, a machining passage for exclusive use is selected.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a diagram showing a passage for a bi-directional tool;
FIG. 2 is a flow chart showing a processing of a numerical control device according to the present invention;
FIG. 3 is a block diagram of hardware for effecting the present and invention; and
FIG. 4 is a diagram showing an example of a passage of a prior art machining program.
DESCRIPTION OF THE PREFERRED EMBODIMENT
One embodiment of the present invention will now be described with reference to the accompanying drawings.
FIG. 1 shows a passage for a tool which is capable of multi-directional cutting. In FIG. 1, numeral 1 denotes a workpiece, and numeral 2 denotes the tool having cutting edges on both the right and left sides thereof, and thus capable of multi-directional cutting. The axes of the abscissa and ordinate represent the Z-and X-axes, respectively. As shown in FIG. 1, the tool advances successively through passage sections P1, P2, P3, and P4, and in contrast with the arrangement of FIG. 4, there is no extra passage, whereby the machining time is reduced and the NC statement is shortened. In the machining passage, the full line indicates cutting, and the broken line indicates a rapid traverse.
FIG. 2 is a flow chart showing a processing of a numerical control device according to the present invention. In FIG. 2, the numerals prefixed with a symbol S are step numbers
REFERENCES:
patent: 4131837 (1978-12-01), Whetham
patent: 4497029 (1985-01-01), Kiyokawa
patent: 4549270 (1985-10-01), Fukumura et al.
patent: 4631465 (1986-12-01), Fukuyama et al.
patent: 4639855 (1987-01-01), Sekikawa
patent: 4644460 (1987-02-01), Kishi et al.
patent: 4680719 (1987-07-01), Kishi et al.
patent: 4742470 (1988-05-01), Juengel
patent: 4748554 (1988-05-01), Gebauer et al.
patent: 4776247 (1988-10-01), Kiya
patent: 4855898 (1989-08-01), Kawamura et al.
Miyata Mitsuto
Moriyama Tomotaka
Nagaoka Yukihito
Fanuc Ltd
Ip Paul
LandOfFree
NC statement preparing system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with NC statement preparing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NC statement preparing system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1416878