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Optimizing Manufacturing Tolerances in Rolling Bearings for Critical Dod Applications

Period of Performance: 01/01/1984 - 12/31/1984

$251K

Phase 2 SBIR

Recipient Firm

Pradeep K. Gupta, Inc.
117 Southbury Road
Clifton Park, NY 12065
Principal Investigator

Abstract

AFTER DEMONSTRATING THE FEASIBIILTY OF THE COMPUTER MODELLING APPROACH TO OPTIMIZING MANUFACTURING TOLERANCES IN ROLLING BEARINGS, PHASE I A DEVELOPMENT PROGRAM TO PARAMETRICALLY EVALUATE THE INFLUENCE OF VARIOUS GEOMETRICAL TOLERANCES ON BEARING PERFORMANCE IS PROPOSED. USING THE COMPUTER MODEL, ADORE, THE DYNAMIC PERFORMANCE OF BOTH BALL AND CYLINDRICAL ROLLER BEARINGS SHALL BE FIRST MODELED AS A FUNCTION OF PRESCRIBED GEOMETRICAL IMPERFECTION ON A SINGLE BEARING ELEMENT; THIS WILL RESULT IN A FUNDAMENTAL UNDERSTANDING OF THE INFLUENCE OF A PRESCRIBED IMPERFECTION ON THE OVERALL BEARING PERFORMANCE. IN THE SECOND STEP A STATISTICAL VARIATION IN THE IMPERFECTION SHALL BE CONSIDERED AND THE BEARING PERFORMANCE SHALL BE INVESTIGATED AS A FUNCTION OF VARIANCE IN THE PRESCRIBED IMPERFECTION AND GUIDANCE FOR DETERMINING LIMITS ON THE VARIANCE OF THE IMPERFECTION SHALL BE DEVELOPED; THIS MAY RESULT IN EFFECTIVE COST AND PERFORMANCE OPTIMIZATION FOR A NUMBER OF ROLLING BEARING APPLICATIONS. FINALLY, SEVERAL GEOMETRICAL IMPERFECTIONS SHALL BE CONSIDERED SIMULTANEOUSLY AND THE CUMULATIVE EFFECT ON BEARING PRFORMANCE SHALL BE SIMULATED. ASIDE FROM DEVELOPING A THOROUGH UNDERSTANDING OF THE ROLE OF MANUFACTURING TOLERANCES IN ROLLING BEARING BEHAVIOR, THE PROPOSED EFFORT SHALL RESULT IN SPECIFIC DESIGN GUIDELINES FOR CRITICAL APPLICATIONS AND IT WILL PROVIDE A PROVEN COMPUTER TOOL FOR IMMEDIATE TECHNOLOGY TRANSFER.

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