Method for producing exterior component of assembled camshaft
OwnerKazuaki Okuno, Hirohisa Haradainventors
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Abstract
Chillers (4) rapidly remove heat from a coupling of cam pieces (6) immediately after molten metal is injected, so as to make the coupling of cam pieces (6) chilled (be a white cast iron). As a result, tensile strength and shear strength of the coupling of cam pieces (6) decreases while the coupling of cam pieces (6) becomes harder. Cam piece original shapes and notches are alternately formed in the coupling of cam pieces (6). The notch of the coupling of cam pieces (6) which is being held by a holder is hit by a breaking tool. Then, the coupling of cam pieces (6) with low tensile strength breaks at the notch which is the vulnerable portion so that an individual cam piece is obtained.
Claims6
A method for producing an exterior component of an assembled camshaft, comprising:
- a casting step for casting a coupling of exterior components which has a shaft fit hole, and in which plural exterior component original shapes between which vulnerable portions are inserted are coupled;
- and
- a dividing step for breaking the coupling of exterior components at one of the vulnerable portions to obtain the exterior component.
Dependencies are inferred from the claim text.