Method for making a rotor assembly

Details Method for making a rotor assembly Method for making a rotor assembly

1981-07-31

1982-07-20

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

29598, 264320, B29D 300, B29C 1700

Patent

active

043405606

ABSTRACT:
Method for making a rotor assembly for a stepping motor is provided by locating one flat side of a brittle magnetic rotor annulus against a preformed annular alignment surface molded into a thermoplastic hub and then thermoplastically working localized portions of the hub adjacent the other flat side of the rotor to form in situ a second annular shoulder thereagainst to lock the rotor in the aligned position. Other localized portions of the hub are thermoplastically worked to form in situ an inner circumferential lip extending radially from the hub into a corresponding groove in the shaft supporting the hub, thereby preventing axial movement of the hub and rotor mounted thereon. Required alignment of the brittle rotor disc is thereby achieved while minimizing the danger of breakage and also minimizing the number of components and assembly steps.

REFERENCES:
patent: 2488729 (1949-11-01), Kooyman
patent: 2756495 (1956-07-01), Lathrop
patent: 3189672 (1965-06-01), Lyman
patent: 3303255 (1967-02-01), Bracey
patent: 3414965 (1968-12-01), Stau et al.
patent: 3628239 (1971-12-01), Hunt
patent: 3728786 (1973-04-01), Lucas et al.
patent: 3943698 (1976-03-01), Ono
patent: 3953752 (1973-03-01), Bannon
patent: 4095129 (1978-06-01), Tanai et al.
patent: 4206379 (1980-06-01), Onda

Affiliated with

Also associated with

Rating

Method for making a rotor assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making a rotor assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making a rotor assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-249933