Method of manufacturing connecting rod for axial cylinder-type reciprocating piston engine
OwnerHermann Papstinventor
Life of this patent
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Abstract
A method of manufacturing a connecting rod for reciprocating piston engines, especially axial cylinder-type reciprocating piston engines, with the connecting rod including a tubular shaft having hollow spherical shells mounted at the ends thereof. The tubular shaft and the hollow spherical shells are constructed from a sheet metal-like material and are joined to form a one-piece connecting rod body by way of welding joints. A lubricating tube is arranged within the tubular shaft and extends between the spherical shells so as to equalize the lubricant between surfaces of the hollow spherical shells.
Claims8
A method of manufacturing a piston connecting rod for a reciprocating axial cylinder-type engine, comprising the steps of:
- providing a tubular shaft;
- turning the respective ends of said tubular shaft so as to form oblique annular edges;
- and
- welding hollow spherical shells at the respective annular edges of said tubular shaft, wherein said method includes forming each of said spherical shells by providing a sheet metal plate and forming the sheet metal plate into a spherical shell including inner and outer spherical surfaces, and wherein said welding step includes welding the hollow spherical shells at the respective annular edges of said tubular shaft such that the inner spherical surfaces thereof extend radially outwardly with respect to a longitudinal axis of the tubular shaft beyond the respective ends of the tubular shaft;
- and
- wherein said method further comprises the steps of concentrically, grinding and rolling surfaces of the spherical shells after said welding.
Dependencies are inferred from the claim text.