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US 4,047,413 AGranted
Automatic metal-spinning method
OwnerBurton F. Lewis, Alan Y. Lewisinventors
Life of this patent
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Abstract
An automatic metal-spinning machine utilizing a plurality of work spindles, which rotate on their own axes, adjacent respective parallel spinning-tool operating shafts rotatable with variable pressure to apply tools against workpieces on the spindles while all simultaneously and continuously rotate around a central column so that a plurality of metal blanks are progressively formed and several parts are completed as the spindles and tool operating shafts make one revolution around the central column.
Claims4
A method of metal spinning comprising:
- a. rotating a plurality of rotating mandrels about a common center;
- b. clamping work pieces upon said mandrels as a function of the position of said mandrels about said common center;
- c. positioning a metal forming tool mounted on a cross arm of a respective reciprocatable rotatable shaft relative to each said mandrel;
- d. moving each said shaft in a direction parallel to the axis of rotation of the respective mandrel to cause each said tool to bear against a work piece.
- e. rotating each said shaft under a predetermined load pressure to cause each said tool to bear against a work piece in a direction perpendicular to the axis of rotation of the respective mandrel;
- f. varying said predetermined load pressure during spinning to accomodate variations in the work to be performed;
- and,
- g. effecting said clamping, positioning, moving, rotating and varying as a function of the position of said mandrels about said common center.
5 more elements
Dependencies are inferred from the claim text.