Title:
【発明の名称】プラスチック材料でできた複合安定化カムシャフト
Document Type and Number:
Japanese Patent JPH03505248
Kind Code:
A
Abstract:
A plastic stabilized composite camshaft and method. In one version, a hollow polished tube is positioned within appropriately aligned and fixtured annular cam elements having interior protrusions that increase in size toward the tube axis and a flowable, hardenable material is injected through the tube to fill the voids between the tube and the cam elements for securing the cam elements to the tube. The protrusions enhance the grip of the plastic with shrinkage. The surfaces of the tube and of the cam elements are preground to finish dimensions. In another version, the annular cam elements are originally circular and formed into their final configuration in the mold by appropriately configured side acting shuttles. In a preferred embodiment for automotive applications, the shaft and cam elements have nesting configurations that form a continuous space therebetween such that the hardened material compressionally resists torsional forces between the shaft and cam elements. A method of injection molding without substantially stressing the freely supported shaft is also disclosed.
Inventors:
Hasted, Royce Etch.
Application Number:
JP50587490A
Publication Date:
November 14, 1991
Filing Date:
March 29, 1990
Export Citation:
Assignee:
Hasted, Royce Etch.
International Classes:
F01L1/04; B29C37/00; B29C45/00; B29C45/14; B29C70/84; F01L1/047; F16H53/02; B29L31/30; (IPC1-7): B29C45/00; B29L31/30; F01L1/04; F16H53/02
Attorney, Agent or Firm:
Kazuo Sato (3 others)