Boots – shoes – and leggings
Patent
1985-06-27
1989-05-02
Shaw, Gareth D.
Boots, shoes, and leggings
364468, 364921, 3649462, G06F 922, G06F 1546
Patent
active
048274461
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an interface unit for numerical control equipment, and more particularly to an interface unit for format conversion which converts a macro instruction into micro instructions.
BACKGROUND ART
Since conventional numerical control equipment (NC) is arranged so that when a group of commands (micro instructions) for performing a certain operation, is made programmable in the form of a single command (a macro instruction), and a program for converting the single command to the group of commands is stored in a ROM or the like of the NC (as is the case with an ordinary cutting program), it is difficult to make the NC versatile. That is to say, the contents of the above conversion program usually differ with machine tools, so it is necessary to modify the specifications of the NC system for each machine tool to which the NC is connected. Furthermore, the situation occasionally arises where it would be desirable, from the standpoint of a machine tool maker, to change the conversion program for their own purposes with a view to presenting their own characteristic feature. However, such a change is not always easy with the prior art numerical control equipment, as mentioned above.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a novel interface unit for format conversion, which converts a macro instruction into micro instructions.
Another object of the present invention is to provide an interface unit format conversion which permits machine tool makers to adopt their own conversion contents while holding the specifications of the NC processor side unified.
The format converting interface unit of the present invention is for numerical control equipment which numerically controls a machine tool by interpreting and executing an NC machining program through use of the operation function of an NC processor. The format converting interface unit comprises a receiving circuit for receiving a macro instruction delivered from the NC processor, format converting means for converting the macro instruction received by the receiving circuit into a series of micro instructions, and a transmitting circuit for transmitting the series of micro instructions obtained by the format converting means to the NC processor.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram of the principal part of an example of the hardware construction of numerical control equipment provided with the format converting interface unit of the present invention;
FIG. 2 is a flowchart for showing an example of processing which is performed by an NC processor 3; and
FIG. 3 is a flowchart showing an example of processing which is performed by a format converting processor 6.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In FIG. 1, reference numeral 1 indicates a ROM for storing a system program, 2 a RAM for storing a machining program, and 3 an NC processor which has its general operation defined by the system program stored in the ROM 1 and which interprets and executes the machining program stored in the RAM 2 to drive servo motors 4 and 5, thereby effecting numerial control of a machine tool (not shown). Reference numeral 6 designates a processor for format conversion, which is connected via a bus 7 to peripheral circuits such as a writable-readable memory, for example, a magnetic bubble memory 8, an input register 9, an input flag 10, an output register 11, an output flag 12 and an in-cycle flag 13. These peripheral circuits are connected via a bus 14 to the NC processor 3. The right-hand side of the one-dot chain line 15 in FIG. 1 is the NC side and the left-hand side is the interface side.
The input register 9 is a register for conveying data from the NC side to the interface side, the input flag 10 is a flag indicating that data has been set in the input register 9, the output register 11 is a register for conveying data from the interface side to the NC side, and the output flag 12 is a flag indicating that the data has been set in the output register 11. Th
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Kawamura Hideaki
Otsuki Toshiaki
Fanuc Ltd
Napiorkowski Maria
Shaw Gareth D.
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