Apparatus having shaping jaws for manufacturing bodies of spindle-type shapes
AssigneeSigma concern
InventorOldrich Langr
Life of this patent
Estimating the term…
Abstract
Apparatus for making a spindle-type body with at least one eccentric zone from a semi-product of circular cross-section by gradually radially displacing the eccentric zone of the semi-product to bring its eccentricity from zero to the desired value. The apparatus includes a multi-part die with shaping jaws providing a semi-product shaping passage therein, the semi-product being thrust axially into the die while the semi-product and the die rotate relatively to each other.
Claims2
Apparatus for manufacturing spindle-type bodies of circular cross-section from a tubular semi-product, said apparatus comprising at least three shaping jaws which are periodically pressed together and apart in the direction transverse to the longitudinal axis of the manufactured body, said shaping jaws forming a continuous passage having an inlet part, a shaping part and a calibrating part, the shaping part being formed as a cavity of circular cross-section the center of which lies at the inlet of the shaping part and coincides with the axis of the inlet part, the center, which trails the calibrating part, lying on a spiral the lead of which corresponds to the lead of the manufactured body, the eccentricity of the spiral increasing along the whole length of the shaping part continuously from zero to the value corresponding to the eccentricity of the spindle of the manufactured body.
Dependencies are inferred from the claim text.