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Process controller for balancing usage of tool sets

  • US 6,021,360 A
  • Filed: 11/04/1997
  • Issued: 02/01/2000
  • Est. Priority Date: 11/04/1997
  • Status: Expired due to Fees
First Claim
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1. A method of controlling processing for a tool set within a manufacturing line, said method including the steps ofretrieving tool and process usage data and tool-specific data based on a chosen tool and process history of said chosen tool, and said process history being based on at least a period of reliability of said chosen tool,calculating a production parameter from said tool and process usage data,comparing said production parameter to a limit included in said tool-specific data including said process history of said chosen tool, andselectively permitting or preventing use of said chosen tool in accordance with a result of said comparing step,wherein said process history of said tool and process data are limited in accordance with a matching product.

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