Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1994-07-01
1995-10-10
Martin, David S.
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
3185681, 36447415, 36447422, G05B 1918
Patent
active
054573696
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a numerical control system, and more particularly, to a numerical control system for displaying machining steps at a display device in accordance with the operator's command.
BACKGROUND ART
In numerical control systems, an interactive-type automatic programming technique is widely used so that machining programs can be easily prepared in a short time. According to the interactive automatic programming procedure, the operator selects a menu screen displayed at a display device in accordance with a machining process, and then selects a menu item corresponding to a machining step, to thereby create a program. This procedure eliminates the need to use a complicated programming language such as an APT for preparing programs, thus permitting even an unskilled operator to create programs.
Machining programs thus created are stored in storage means such as a nonvolatile memory in the numerical control system. Accordingly, once a machining program is created, it can be fetched for use in another machining program. For example, if a hole-cutting program for cutting a hole according to a predetermined pattern is once created, it can be fetched and combined with another machining program to effect the same hole cutting. Thus, the collection of machining programs can be effectively used.
However, in cases where the number of created machining programs is large, each machining program must be selected and the contents thereof displayed, in order to examine whether the program contains a required machining step. Accordingly, finding a machining program containing a target machining step from among a large number of created machining programs is troublesome, requiring considerable labor and time.
DISCLOSURE OF THE INVENTION
The present invention takes into account the above circumstances, and an object thereof is to provide a numerical control system which can readily find a machining program containing a desired machining step and display the program at a display device.
To achieve the above object, the present invention provides a numerical control system capable of displaying a machining step at a display device, which comprises storage means for storing at least one machining program including internal codes and an internal table defining machining steps corresponding to the respective internal codes, setting/registering means for creating the machining program interactively in accordance with commands entered by an operator through an input device including a keyboard, and for registering the machining program in the storage means with the internal codes corresponding to the machining steps affixed to the machining program, command input means for requesting the operator to enter a search start program number and a search end program number through the input device when supplied with a command to carry out a search for a machining step, searching means for searching the machining program, stored in the storage means, for the machining step specified by the command, based on the search start program number and the search end program number, and outputting search data, and display control means for displaying the received search data at the display device.
The storage means stores at least one machining program and the internal table. The machining program is created according to an automatic programming procedure and contains internal codes representing machining steps. The internal table defines the internal codes and the machining steps.
The setting/registering means creates the machining program interactively in accordance with commands entered by the operator through an input device such as a keyboard, and registers the machining program in the storage means with internal codes corresponding to the machining steps affixed to the program.
When a command to carry out a search for a specific machining step is entered by the operator, the command input means requests the operator to enter a search start program number, a search end program number, etc., through t
REFERENCES:
patent: 4706002 (1987-11-01), Fukuyama
Deguchi Yuji
Matsumura Teruyuki
Noda Koichi
Fanuc Ltd.
Martin David S.
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