Method and apparatus for manufacturing supercharger rotor

Details Method and apparatus for manufacturing supercharger rotor Method and apparatus for manufacturing supercharger rotor

2005-09-06

2005-09-06

Kerns, Kevin P. (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C409S066000

Reexamination Certificate

active

06938670

ABSTRACT:
A method for manufacturing a supercharger rotor by casting a profile portion of a supercharger rotor and a shaft penetrating the same, having the steps of: first cutting a left and right helical cross portion on a surface of the shaft connected to the profile portion, wherein the cross portion includes a right handed helical groove and a left handed helical groove, and these grooves cross each other; and casting the profile portion around the shaft in die-casting. In this way, a plurality of profile portion divided metal molds surround a profile portion and end metal molds surround both rotor ends. A helical core is attached to one end mold to pass through the profile portion. A rotor-shaped cavity forms inside the molds. Hot metal is pressurized, injected and solidified in the cavity, and the end mold having the helical core is pulled out by rotation along a helical line.

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Webster's Collegiate Dictionary, 1977, pp. 531-532.

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