Balanced rotor
A method of producing a rotor positions a shaft in one of a first mold portion and a second mold portion, and positions a cup in one of the first mold portion and the second mold portion. The first and second mold portions are then mated to form a chamber. Molding material is injected into the chamber to produce a molded part that includes the cup and the shaft. The molded part has a part axis that substantially parallel with the part axis.
1. A method of producing a rotor, the method comprising:
positioning a shaft in one of a first mold portion and a second mold portion;
positioning a cup in one of the first mold portion and the second mold portion, the cup having a cup axis;
mating the first and second mold portions, the mated first and second mold portions forming a chamber, mating including biasing the shaft to be substantially coaxial to the cup axis; and
injecting molding material into the chamber to produce a molded part that includes the cup and the shaft, the molded part having a part axis, the part axis being substantially coaxial with the shaft.
2. The method as defined by claim 1 wherein the cup has a cup draft, the cup being positioned in the first mold portion via a cup recess having a recess draft, the cup draft being substantially equal to the recess draft.
3. The method as defined by claim 1 wherein the cup and shaft comprise metal.
4. A method of producing a rotor, the method comprising:
fixedly positioning a cup in a molding machine, the cup having a cup axis;
fixedly positioning a shaft in the molding machine, the shaft being coaxial with the cup axis within the molding machine; and
injecting molding material into the molding machine, the molding material forming a molded part that includes the cup and shaft,
wherein the cup has a cup draft, the cup being positioned in the molding machine via a cup recess having a recess draft, the cup draft being substantially equal to the recess draft.
5. The method as defined by claim 4 further comprising:
securing a magnet to the cup.
6. The method as defined by claim 4 wherein the molded part includes a propeller coupled about the cup.
7. The method as defined by claim 4 wherein the molding machine implements insert molding processes.
8. The method as defined by claim 4 wherein the cup is positioned in the molding machine before the shaft is positioned in the molding machine.
9. The method as defined by claim 4 wherein the shaft is positioned in the molding machine before the cup is positioned in the molding machine.
10. The method as defined by claim 4 wherein the cup is metal and the shaft is metal.
11. The method as defined by claim 4 wherein the molded part is substantially balanced.
12. The method as defined by claim 4 further comprising:
removing the molded part from the molding machine.
13. The method as defined by claim 4 wherein the molding material is a resin.
14. The method as defined by claim 1 further comprising:
securing a magnet to the cup.
15. The method as defined by claim 1 wherein the molded part includes a propeller about the cup.
16. The method as defined by claim 1 wherein the first and second mold portions are a part of a molding machine that implements insert molding processes.
17. The method as defined by claim 1 wherein the molded part is substantially balanced.
18. The method as defined by claim 1 further comprising:
removing the molded part from the molding chamber.
19. The method as defined by claim 1 wherein the cup has a top surface that is substantially perpendicular to the shaft when the cup and shaft are within the molding portions.