Numerical control apparatus with simultaneous function execution

• US 5,005,134 A
• Filed: 11/09/1988
• Issued: 04/02/1991
• Est. Priority Date: 04/30/1987
• Status: Expired due to Fees

• Current Assignee: Fanuc Ltd (Fanuc Corporation)
• Original Assignee: Fanuc Ltd (Fanuc Corporation)
• Inventors: Nakashima, Yoshihiro, Kinoshita, Yasunori
• Primary Examiner(s): MacDonald, Allen R.
• Application Number:
  US07/274,149
• Time in Patent Office: 874 Days
• Field of Search: 364/147, 364/171, 364/900, 364/200, 364/168, 364/169, 364/170, 364/474.01, 364/167.01, 364/474.11
• US Class Current: 700/168
• CPC Class Codes: G05B 19/4147 characterised by using a programmable interface controller [PIC]

Abstract

A numerical control apparatus for sequentially controlling an NC machine tool in accordance with a stored-program method, in which a plurality of function codes of the same type are set from the same block of an NC program. These function instructions of the same type are executable simultaneously on the machine tool side. To this end, the apparatus includes a memory (101b) for simultaneously storing a plurality of auxiliary function codes, which command the machine tool to perform specific operations, from a program that has been read in a programmable machine controller (2) executes a function instruction upon identifying a number of each of the auxiliary function codes stored in the memory. A processor (101d) updates all of the auxiliary function codes of the memory in response to completion of a sequence operation, which corresponds to each of the auxiliary function codes, in the machine tool.

Claims

1. A numerical control apparatus for sequentially controlling an NC machine tool in accordance with a stored-program method by using a sequence program and a program that has been read in, comprising:

memory means for simultaneously storing a plurality of auxiliary function codes which command the NC machine tool to perform specific auxiliary functions, from the program that has been read in;

execution means for simultaneously executing function instructions identifying auxiliary function numbers corresponding to each of the auxiliary function codes stored in said memory means to carry out the auxiliary functions; and

updating means for updating all of the auxiliary function codes of said memory means in response to completion of the auxiliary functions, which correspond to each of the auxiliary function codes, in the NC machine tool.

2. A numerical control apparatus according to claim 1, wherein said numerical control apparatus includes a main body and a programmable machine controller coupled to the main body, wherein said memory means is provided on the side of the main body of said numerical control apparatus, and further comprising auxiliary function read-in registers provided for reading in the plurality of auxiliary function codes simultaneously on the side of said programmable machine controller.

3. A numerical control apparatus according to claim 1, wherein said execution means processes a function instruction in accordance with set control conditions upon decoding each auxiliary function code.

4. A numerical control apparatus according to claim 1, wherein the plurality of auxiliary function codes stored by said memory means are included in the same program block, and a transition to execution of the next program block is made after confirmation of a signal indicating completion of a sequence operation by the NC machine tool.