Selection apparatus

Patent metadata

Field	Value
Publication number	US-10684606-B2
Application number	US-201716348870-A
Country	US
Kind code	B2
Filing date	Jan 27, 2017
Priority date	Jan 27, 2017
Publication date	Jun 16, 2020
Grant date	Jun 16, 2020

Abstract

A numerical control apparatus that is a selection apparatus causes, when an automatic lathe that fabricates a workpiece from a bar is unable to fabricate a workpiece that is a fabrication target from a remaining material that is a remaining part of the bar being machined, the automatic lathe to select another workpiece that the automatic lathe is able to fabricate from the remaining material. The numerical control apparatus includes a selection unit to select, when there are a plurality of other workpieces that are able to be fabricated from the remaining material, a workpiece to be fabricated on the basis of a length of the remaining material and priority.

First claim

The invention claimed is:

1. A selection apparatus comprising:
processing circuitry configured as a selector to select, when a machine tool that fabricates a workpiece from a bar is unable to fabricate a workpiece that is a fabrication target from a remaining material that is a remaining part of the bar being machined and when there are a plurality of other workpieces that are able to be fabricated from the remaining material, a workpiece to be fabricated on a basis of a length of the remaining material and priority, wherein
the priority is an order of fabricating workpieces specified in a production schedule.

2. The selection apparatus according to claim 1 , wherein
the selector further selects the workpiece to be fabricated on a basis of information indicating machining lengths of the other workpieces, and
the information indicating the machining lengths of the other workpieces is a part of a machining program.

3. The selection apparatus according to claim 1 , wherein
the selector further selects the workpiece to be fabricated on a basis of information indicating machining lengths of the other workpieces, and
the information indicating the machining lengths of the other workpieces is calculated on a basis of a machining program.

4. The selection apparatus according to claim 1 , wherein the selector selects, as the workpiece to be fabricated, another workpiece having a higher priority order on a basis of priority-order information indicating the priority order of the other workpieces to be fabricated from the remaining material.

5. The selection apparatus according to claim 4 , further comprising:
processing circuitry configured as a controller to control a workpiece sorting apparatus that stores a fabricated workpiece in a workpiece storage, wherein
the controller controls the workpiece sorting apparatus such that the workpiece sorting apparatus stores, in a storage corresponding to a type of each workpiece to be stored in the workpiece storage, a corresponding workpiece.

6. The selection apparatus according to claim 1 , wherein
the selector selects, for a machine tool that is unable to fabricate a workpiece specified in the production schedule among one or more of the machine tools, a workpiece that is able to be fabricated and is specified in the production schedule corresponding to another machine tool, which is different from the machine tool that is unable to fabricate the workpiece, as a workpiece to be fabricated earliest.

7. The selection apparatus according to claim 1 , wherein the machine tool fabricates a workpiece specified in the production schedule from the bar.

8. A selection apparatus comprising:
processing circuitry configured as a selector to select, when a machine tool that fabricates a workpiece from a bar is unable to fabricate a workpiece that is a fabrication target from a remaining material that is a remaining part of the bar being machined and when there are a plurality of other workpieces that are able to be fabricated from the remaining material, a workpiece to be fabricated on a basis of a length of the remaining material and priority, wherein
the priority is a priority order of interrupt information.

9. The selection apparatus according to claim 8 , wherein
the selector further selects the workpiece to be fabricated on a basis of information indicating machining lengths of the other workpieces, and
the information indicating the machining lengths of the other workpieces is a part of a machining program.

10. The selection apparatus according to claim 8 , wherein
the selector further selects the workpiece to be fabricated on a basis of information indicating machining lengths of the other workpieces, and
the information indicating the machining lengths of the other workpieces is calculated on a basis of a machining program.

11. The selection apparatus according to claim 8 , wherein the selector selects, as the workpiece to be fabricated, another workpiece having a higher priority order on a basis of priority-order information indicating the priority order of the other workpieces to be fabricated from the remaining material.

12. The selection apparatus according to claim 11 , further comprising:
processing circuitry configured as a controller to control a workpiece sorting apparatus that stores a fabricated workpiece in a workpiece storage, wherein
the controller controls the workpiece sorting apparatus such that the workpiece sorting apparatus stores, in a storage corresponding to a type of each workpiece to be stored in the workpiece storage, a corresponding workpiece.

13. The selection apparatus according to claim 8 , wherein
the selector selects, for a machine tool that is unable to fabricate a workpiece specified in a production schedule, a workpiece that is able to be fabricated and has the highest priority order of the interrupt information, and
the interrupt information indicates a priority order of workpieces to be fabricated from the remaining material when the machine tool is unable to fabricate a workpiece specified in the production schedule.

14. The selection apparatus according to claim 8 , wherein the machine tool fabricates a workpiece specified in the production schedule from the bar.

15. A selection apparatus comprising:
processing circuitry configured as a selector to select, when a machine tool that fabricates a workpiece from a bar is unable to fabricate a workpiece that is a fabrication target from a remaining material that is a remaining part of the bar being machined and when there are a plurality of other workpieces that are able to be fabricated from the remaining material, a workpiece to be fabricated on a basis of a length of the remaining material and priority, wherein
the priority is a priority order for fabricating workpieces specified in a machining program.

16. The selection apparatus according to claim 15 , wherein
the selector further selects the workpiece to be fabricated on a basis of information indicating machining lengths of the other workpieces, and
the information indicating the machining lengths of the other workpieces is a part of a machining program.

17. The selection apparatus according to claim 15 , wherein
the selector further selects the workpiece to be fabricated on a basis of information indicating machining lengths of the other workpieces, and
the information indicating the machining lengths of the other workpieces is calculated on a basis of a machining program.

18. The selection apparatus according to claim 15 , wherein the selector selects, as the workpiece to be fabricated, another workpiece having a higher priority order on a basis of priority-order information indicating the priority order of the other workpieces to be fabricated from the remaining material.

19. The selection apparatus according to claim 15 wherein
the selector selects, in accordance with the priority order specified in the machining program, another machining program different from the machining program with which the workpiece is not able to be fabricated.

20. The selection apparatus according to claim 15 , wherein the machine tool fabricates a workpiece specified in the production schedule from the bar.

Assignees

• Mitsubishi Electric Corp

Inventors

• Sagasaki Masakazu

Classifications

• G05B19/4155 Primary

  characterised by program execution, i.e. part program or machine function execution, e.g. selection of a program · CPC title

• Y02P90/02

  Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS] · CPC title

• B23Q15/00

  Automatic control or regulation of feed movement, cutting velocity or position of tool or work · CPC title

• G05B19/41865

  characterised by job scheduling, process planning, material flow · CPC title

• B23Q2707/003

  in a lathe · CPC title