Intelligent machining workstation operating logic

• US 5,189,624 A
• Filed: 01/27/1992
• Issued: 02/23/1993
• Est. Priority Date: 09/29/1989
• Status: Expired due to Term

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Hunter, William A., Colananni, Paul D., Elman, Larisa A., Barlow, Allan R., Garafola, Daniel C., Irving, Bryan E.
• Primary Examiner(s): Smith, Jerry
• Assistant Examiner(s): GORDON, PAUL P
• Application Number:
  US07/825,741
• Time in Patent Office: 393 Days
• Field of Search: 364/131, 364/133, 364/138, 364/468, 364/474.11, 364/478, 29/564, 29/783
• US Class Current: 700/169
• CPC Class Codes: G05B 19/182 characterised by the machine tool function, e.g. thread cutting, cam making, tool direction control G05B19/21 - G05B19/40 take precedence
• CPC Class Codes: G05B 19/401 characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes G05B19/19 takes precedence
• CPC Class Codes: G05B 19/404 characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia G05B19/19, G05B19/41 take precedence
• CPC Class Codes: G05B 19/4065 Monitoring tool breakage, life or condition
• CPC Class Codes: G05B 19/414 Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
• CPC Class Codes: G05B 19/4184 characterised by fault tolerance, reliability of production system
• CPC Class Codes: G05B 19/41865 characterised by job scheduling, process planning, material flow
• CPC Class Codes: G05B 19/4187 by tool management
• CPC Class Codes: G05B 19/41875 characterised by quality surveillance of production
• CPC Class Codes: G05B 19/41895 using automatic guided vehicles [AGV] control of position or course of AGV's G05D1/00
• 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: Y02P 90/60 Electric or hybrid propulsion means for production processes

Abstract

A host computer is connected to one or more machining workstations, each having its own electronic controller. Each workstation controller contains an operating machine control logic module which controls the functioning of the workstation, such as the carrying out of the movement of a chuck holding a workpiece to be machined on a spindle with respect to a tool which does the machining. Each workstation controller also contains an automation machine control logic module which automates the operation of each of the workstations. In the example of the invention described here, each automation machine control logic module contains blocks which manage the initialization of the workstation, communication between the host and the workstation controller, quality control functions, the interfacing of automated guided vehicles with the workstation, the supply of coolant to the workstation, the removal of swarf from the workstation, the status and location of the workpieces in the workstation, the supply and exchange of tools for the workstation, the logging and reporting of data, the end of part program tasks, the aborting of the part program, and tool wear and break detection and recovery of the workstation from such occurrences.

Claims

1. A manufacturing apparatus, comprising:

one or more machining apparatus;

a host controller connected to the one or more machining apparatus;

each of the machining apparatus including a workstation controller having operating control logic for controlling the operation of the machining apparatus; and

the workstation controller also having automation control logic for automating the operation of the machining apparatus comprising;

a means for managing initialization of the workstation controller;

a means for managing communications between the host controller and the workstation controller in the machining apparatus;

a means for managing quality control requirements of the machining apparatus;

a means for managing interchanges of workpieces, tool magazines, and chip containers between automated guided vehicles and the machining apparatus;

a means for managing supply of coolant to the machining apparatus;

a means for managing removal of swarf from the machining apparatus;

a means for managing status and location of workpieces in the machining apparatus;

a means for managing tool supply and exchange in the machining apparatus;

a means for logging and reporting of data from the machining apparatus;

a means for managing end of program tasks in the machining apparatus;

a means for managing aborting of a program running in the machining apparatus; and

a means for managing detection of tool breaks and tool wear and for managing recovery of the machining apparatus from such tool breaks and wear.

2. A manufacturing apparatus, comprising:

one or more machining apparatus;

a host controller connected to the one or more machining apparatus;

each of the machining apparatus including a workstation controller having operating control logic for controlling the operation of the machining apparatus; and

the workstation controller also having automation control logic for automating the operation of the machining apparatus comprising;

a means for managing initialization of the workstation controller;

a means for managing communications between the host controller and the workstation controller in the machining apparatus;

a means for managing interchanges of workpieces, tool magazines, and chip containers between automated guided vehicles and the machining apparatus;

a means for managing status and location of workpieces in the machining apparatus;

a means for logging and reporting of data from the machining apparatus;

a means for managing end of program tasks in the machining apparatus; and

a means for managing aborting of a program running in the machining apparatus.

3. The apparatus of claim 2, in which the automation control logic further comprises:

a means for managing quality control requirements of the machining apparatus.

4. The apparatus of claim 2, in which the automation control logic further comprises:

a means for managing supply of coolant to the machining apparatus.

5. The apparatus of claim 2, in which the automation control logic further comprises:

a means for managing removal of swarf from the machining apparatus.

6. The apparatus of claim 2, in which the automation control logic further comprises:

a means for managing tool supply and exchange in the machining apparatus.

7. The apparatus of claim 2, in which the automation control logic further comprises:

a means for managing detection of tool breaks and tool wear and for managing recovery of the machining apparatus from such tool breaks and wear.