Numerical control method

• US 4,591,968 A
• Filed: 04/01/1983
• Issued: 05/27/1986
• Est. Priority Date: 04/07/1982
• Status: Expired due to Term

• Current Assignee: Fanuc Ltd (Fanuc Corporation)
• Original Assignee: Fanuc Ltd (Fanuc Corporation)
• Inventors: Kawamura, Hideaki, Miyata, Mitsuto, Nozawa, Ryoichiro
• Primary Examiner(s): Ruggiero, Joseph
• Application Number:
  US06/481,249
• Time in Patent Office: 1,152 Days
• Field of Search: 364/474, 364/475, 364/167-171, 364/191-193, 318/568
• US Class Current: 700/181
• CPC Class Codes: G05B 19/408 characterised by data handling or data format, e.g. reading, buffering or conversion of data
• CPC Class Codes: G05B 2219/35245 Expansion of control words, code of standard language to increase functionality
• CPC Class Codes: G05B 2219/35252 Function, machine codes G, M

Abstract

A numerical control method for a numerical control device which executes processing based on a machining program composed of multiple items of numerical control command data such as numerical command data and G-code data. Each item of the G-code data is expressed in the form of an alphabetic character G, a numerical value following G, and a code following the numerical value. The method includes inserting the items of G-code data in the machining program at suitable locations, subsequently discriminating the G-code data, and causing the numerical control device to execute processing specified by the discriminated G-code data.

Claims

1. A method for a numerical control device which executes numerical control processing based on a machining program composed of multiple items of numerical control command data such as numerical command data and G-code data which are stored in a machining program memory in blocks, comprising the steps of:

(a) inserting the G-code data in the machining program at appropriate locations, each item of the G-code data comprising an alphabetic character G, a first code following the alphabetic character G, and a second code following the first code, the first code defining one of several groups of items of G-code data, a storage area being provided for each group, and the first and second codes specifying a type of processing;

(b) executing numerical control processing upon reading the machining program out of the machining program memory one block at a time;

(c) discriminating whether read numerical control command data in the machining program is G-code data;

(d) discriminating one of the items of G-code data;

(e) executing, using the numerical control device, processing specified by the discriminated item of G-code data until another one of the items of G-code data belonging to the same group is discriminated;

(f) specifying the storage area by the first code following the character G;

(g) designating a bit position in the specified storage area by the second code;

(h) assigning, when an item of G-code data is discriminated, only the bit position of the storage area designated by the item of G-code data a logical value of "1"; and

(i) assigning all other bit positions of the storage area a logical value of "0".

2. A method according to claim 1, wherein step (e) comprises executing, by the numerical control device, a prescribed control operation in dependence upon the logical values in each of the storage areas.

3. A method according to claim 1, wherein said first and second codes are first and second numerical values separated by a period.

4. A numerical control method using a processor and a G-code memory to execute numerical control instructions including G-code instructions having a G-code label, a numerical value and a code, said method comprising the steps of:

(a) reading the numerical control instructions one at a time;

(b) determining whether the numerical control instruction is a G-code instruction;

(c) accessing a memory location in the G-code memory designated by the numerical value if the numerical control instruction is a G-code instruction;

(d) changing a bit designated by the code at the memory location to a first logical value if the numerical control instruction is a G-code instruction;

(e) changing all other bits at the memory location to a second logical value if the numerical control instruction is a G-code instruction; and

(f) executing numerical control processing in dependence upon the contents of the G-code memory.

5. A method according to claim 4, wherein step (f) comprises executing numerical control processing in dependence upon the numerical control instructions using the contents of the G-code memory as control data.