Automatic machining apparatus

• US 5,401,229 A
• Filed: 06/23/1993
• Issued: 03/28/1995
• Est. Priority Date: 07/02/1992
• Status: Expired due to Term

• Current Assignee: Daifuku Company Limited
• Original Assignee: Daifuku Company Limited
• Inventors: Otsuka, Hiroshi, Imamura, Tsutomu, Yoshida, Kimiaki, Nishiki, Shinjiro, Takao, Suzushi
• Primary Examiner(s): BRIGGS, WILLIAM R
• Application Number:
  US08/081,666
• Time in Patent Office: 643 Days
• Field of Search: 483/4, 483/5, 483/8, 483/9, 483/11, 483/14, 483/15, 198/346.1, 198/346.2, 198/465.1, 198/464.1, 364/474.21, 364/474.11, 364/478
• US Class Current: 483/15
• CPC Class Codes: B23Q 3/15546 Devices for recognizing tools in a storage device, e.g. coding devices
• CPC Class Codes: B23Q 41/00 Combinations or associations of metal-working machines not directed to a particular result according to classes B21, B23, or B24 B23Q37/00, B23Q39/00 take precedence; features relating to operations performed, if the different metal-working operations are of the same kind, see the subclass for the kind of operation, e.g. punching B21D, welding B23K, grinding B24B; features relating to technically specified combinations of different metal-working operations B23P23/00
• CPC Class Codes: G05B 19/4183 characterised by data acquisition, e.g. workpiece identification
• CPC Class Codes: G05B 2219/31095 Read write intelligent chip on workpiece, pallet, tool for data exchange
• CPC Class Codes: G05B 2219/31283 Communication memory, storage, ram, eprom on workpiece or pallet
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
• CPC Class Codes: Y10T 483/134 Identifying information on tool or tool holder
• CPC Class Codes: Y10T 483/165 Plural machine tools, e.g., flexible manufacturing

Abstract

An automatic machining apparatus includes a rack for storing workpieces mounted on pallets, setting stations for setting the workpieces on the pallets, processing machines for processing the workpieces according to specified processing information, and a stacker crane for transporting the workpieces on the pallets between the rack and setting stations and between the rack and processing machines. The entire apparatus is operable under control of a main controller, with the processing machines controlled by an auxiliary controller. Each pallet carries an IC card for storing information on treatment done to the workpiece mounted thereon. The main controller includes a first communicating device for writing the information on treatment into the IC card. The auxiliary controller includes a second communicating device for reading the information on treatment from the IC card.

Claims

1. An automatic machining apparatus comprising:

storage means for storing workpieces, pallets, jigs for use in setting said workpieces on said pallets, and untreated, half-treated or finished products each including a workpiece on a pallet;

setting means for setting said workpieces on said pallets by using said jigs;

automatically controllable processing machines for automatically processing said workpieces according to specified processing information;

transport means for transporting said workpieces, said pallets, said jigs, and said untreated or half-treated products between said storage means and said setting means, and transporting said untreated, half-treated or finished products between said storage means and said processing machines;

data storage means provided on said pallets;

main control means for controlling processing of said workpieces and operation of said transport means; and

auxiliary control means for controlling operation of said processing machines;

wherein said main control means includes first communicating means for writing information on the types of processing to be done to said workpieces onto said data storage means;

wherein said auxiliary control means includes second communicating means for reading said information on the types of processing to be done to said workpieces from said data storage means;

wherein said auxiliary control means is operable to write, through said second communicating means and onto said data storage means, information on results of processing done to said workpieces;

wherein said main control means is operable to read, through said first communicating means and from said data storage means, said information on the results of processing done to said workpieces so that said workpieces are transported based on said read information on the results of processing done to said workpieces; and

wherein said information on the results of processing done to said workpieces includes information indicative of whether the processing has been carried out properly.

3. An automatic machining apparatus as defined in claim 1, wherein said storage means comprises an automatic storage type rack including a plurality of depositories arranged vertically and horizontally.

4. An automatic machining apparatus as defined in claim 1, wherein said setting means comprises setup stations each including includes a working table, and an indicator/control panel for indicating operating information to a setup worker and processing requests inputted by the worker.

5. An automatic machining apparatus as defined in claim 1, wherein said automatically controllable processing machines comprise machining centers.

6. An automatic machining apparatus as defined in claim 1, wherein said transport means comprises a stacker crane operable to run along guide rails.

7. An automatic machining apparatus as defined in claim 1, wherein said data storage means comprises IC cards.

8. An automatic machining apparatus as defined in claim 1, wherein said first communicating means and said second communicating means comprise IC card reader/writers.

2. An automatic machining apparatus comprising:

storage means for storing workpieces, pallets, jigs for use in setting said workpieces on said pallets, and untreated, half-treated or finished products each including a workpiece on a pallet;

setting means for setting said workpieces on said pallets by using said jigs;

automatically controllable processing machines for automatically processing said workpieces according to specified processing information;

transport means for transporting said workpieces, said pallets, said jigs, and said untreated or half-treated products between said storage means and said setting means, and transporting said untreated, half-treated or finished products between said storage means and said processing machines;

data storage means provided on said pallets;

main control means for controlling processing of said workpieces and operation of said transport means; and

auxiliary control means for controlling operation of said processing machines;

wherein said main control means includes first communicating means for writing information on the types of processing to be done to said workpieces onto said data storage means;

wherein said auxiliary control means includes second communicating means for reading said information on the types of processing to be done to said workpieces from said data storage means;

tool reserving means for keeping processing tools;

tool storage means provided for said processing machines to store said tools for use by the processing machines;

tool transport means for transporting said tools between said tool reserving means and said tool storage means;

control means for controlling information on tool reserves at said tool reserving means, information on tool storage at said tool storage means, operation of said tool transport means and operation of the processing machines; and

tool measuring means for measuring characteristics of said tools,

wherein each of said tools or trays for supporting said tools includes tool data storage means for storing said information on characteristics of the tool obtained by said tool measuring means,

wherein said control means includes third communicating means for writing said information on characteristics of the tools obtained by said tool measuring means into said data storage means, and

wherein said control means for said processing machines include fourth communicating means for reading said information on characteristics of the tools from said data storage means.

19. An automatic machining apparatus as claimed in claim 2, wherein said third communicating means and said fourth communicating means comprise IC card readers/writers.

9. An automatic machining apparatus comprising:

storage means for storing workpieces, pallets, jigs for use in setting said workpieces on said pallets, and untreated, half-treated or finished products each including a workpiece on a pallet;

setting means for setting said workpieces on said pallets by using said jigs;

automatically controllable processing machines for automatically processing said workpieces according to specified processing information;

transport means for transporting said workpieces, said pallets, said jigs, and said untreated or half-treated products between said storage means and said setting means, and transporting said untreated, half-treated or finished products between said storage means and said processing machines;

tool reserving means for keeping processing tools;

tool storage means provided for said processing machines to store said tools for use by the processing machines;

tool transport means for transporting said tools between said tool reserving means and said tool storage means;

control means for controlling information on tool reserves at said tool reserving means, information on tool storage at said tool storage means, operation of said tool transport means, and operation of the processing machines; and

tool measuring means for measuring characteristics of said tools;

wherein each of said tools or trays for supporting said tools includes tool data storage means for storing said information on characteristics of the tool obtained by said tool measuring means;

said control means includes third communicating means for writing said information on characteristics of the tools obtained by said tool measuring means into said data storage means; and

said control means or said processing machines include(s) fourth communicating means for reading said information on characteristics of the tools from said data storage means.

10. An automatic machining apparatus as defined in claim 9, wherein said storage means comprises an automatic storage type rack including a plurality of depositories arranged vertically and horizontally.

11. An automatic machining apparatus as defined in claim 9, wherein said setting means comprises setup stations each including includes a working table, and an indicator/control panel for indicating operating information to a setup worker and processing requests inputted by the worker.

12. An automatic machining apparatus as defined in claim 9, wherein said automatically controllable processing machines comprise machining centers.

13. An automatic machining apparatus as defined in claim 9, wherein said transport means comprises a stacker crane operable to run along guide rails.

14. An automatic machining apparatus as defined in claim 9, wherein said tool reserving means comprises a tool stocker acting as a centralized tool reserving device for keeping reserve tools to be supplied to said processing machines, said tool stocker having a fixed shelf structure including a plurality of depositories arranged vertically and horizontally to store said trays.

15. An automatic machining apparatus as defined in claim 9, wherein said tool transport means comprises an automotive carriage controlled by a carriage controller through radio communication to run along guide lines.

16. An automatic machining apparatus as defined in claim 9, wherein said tool measuring means comprises a tool presetter for measuring axial lengths and tip shapes (degrees of wear) of said tools.

17. An automatic machining apparatus as defined in claim 9, wherein said data storage means comprises IC cards.

18. An automatic machining apparatus as defined in claim 9, wherein said third communicating means and said fourth communicating means comprise IC card reader/writers.