Method and apparatus for forming internally profiled tubular parts by material displacement
Abstract
Abstract A METHOD AND DEVICE FOR FORMING TUBULAR PARTS BY MATERIAL DISPLACEMENT WHEREIN A HOLLOW WORKPIECE BLANK IS FED PAST A TAPERED MANDREL POSITIONED WITHIN THE BLANK AND INTERMEDIATE THE DEFORMING AREAS OF DIES. THE MANDREL IS TAPERED FROM ITS TRAILING TO ITS LEADING END AND THE MANDREL''S LARGEST CROSS SECTIONAL DIMENSIONS ARE GREATER THAN THE INTERNAL CROSS SECTIONAL DIMENSIONS OF THE WORKPIECE BLANK WHEREBY THE DEFORMATION OF THE WORKPIECE BLANK ABOUT THE MANDREL BY THE DIES GRADUALLY REDUCES THE EXTERIOR DIMENSIONS AND GRADUALLY INCREASES THE INTERIOR DIMENSIONS OF THE WORKPIECE BLANK UNTIL THE INTERNAL CROSS SECTIONAL DIMENSIONS OF THE WORKPIECE BLANK CON- FORM TO THE EXTERIOR CROSS SECTIONAL DIMENSIONS OF THE MANDREL AT THE TRAILING END OF THE MANDREL.
Inventors
- 👤 Erich Tlaker
Bibliographic Details
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