Die draft optimizing system
AssigneeSouthwire Company
InventorClinton E. Watkins
Life of this patent
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Abstract
An expert system having a computer which can receive input data and from stored data to produce an optimized die draft schedule for a given wire drawing machine. The system is adaptable to store data for a plurality of die drawing machines, producing an optimized die draft schedule for a range of input and output rod/wire sizes on each drawing machine for which the system has stored operating parameters. Alternatively, operating parameters for additional drawing machines can be entered, enabling generation of optimum die draft schedules for most wire drawing machines. An enhanced mode may be made available to enable comparison of computed values and operator estimated values.
Claims22
An optimized die draft schedule expert system for a re drawing machine having a plurality of capstans and dies arranged in sequence and in which a wire may be drawn through the dies, comprising a data storage unit including stored data in a plurality of databases;
- a computer;
- a program instruction set;
- means for entering data relating to input material size and output material size, and starting and finishing slip;
- and means for outputting said optimized die draft schedule;
- wherein said program instruction set is adapted for iterative calculation of a plurality of slip increments according to the formula:
- ##EQU5## and for iterative calculation of a plurality die sizes based on the formula:
- wire linear velocity=capstan surface velocity.times.slip.
The method of determining an optimized die draft schedule in an expert system for a wire drawing machine including a plurality of capstans and dies in sequence, said expert system including means for entering, a computer, a program instruction set, and a storage unit, comprising the steps of:
- a) entering an input rod size;
- b) entering an output wire size;
- c) determining a starting slip data value;
- d) determining an ending slip data value;
- e) determining a set of drawing machine operating parameters;
- f) calculating a slip increment value;
- g) calculating each of a plurality of preceding wire velocity values;
- h) calculating each of a plurality of preceding wire sizes by said wire velocity values;
- and
- i) comparing a calculated wire size and a desired wire size.
Dependencies are inferred from the claim text.