Apparatus for manufacturing armatures

• US 5,596,799 A
• Filed: 06/07/1995
• Issued: 01/28/1997
• Est. Priority Date: 04/28/1994
• Status: Expired due to Fees

• Current Assignee: Globe Products Incorporated
• Original Assignee: Globe Products Incorporated
• Inventors: Beakes, John M.
• Primary Examiner(s): Hall, Carl E.
• Application Number:
  US08/477,352
• Time in Patent Office: 601 Days
• Field of Search: 29/281.4, 29/559, 29/596, 29/598, 29/732, 29/733, 29/735, 29/736, 29/759, 29/760, 198/394, 198/401, 414/754, 414/757, 414/780, 414/783
• US Class Current: 29/733
• CPC Class Codes: H02K 15/028 for fastening to casing or support, respectively to shaft or hub
• CPC Class Codes: H02K 15/165 Balancing the rotor
• CPC Class Codes: H02K 7/04 Balancing means
• CPC Class Codes: H02K 7/075 using crankshafts or eccentrics
• CPC Class Codes: Y10T 29/49011 Commutator or slip ring assembly
• CPC Class Codes: Y10T 29/49012 Rotor
• CPC Class Codes: Y10T 29/53078 with means to fasten by frictional fitting
• CPC Class Codes: Y10T 29/53143 Motor or generator
• CPC Class Codes: Y10T 29/53148 Means to assemble commutator
• CPC Class Codes: Y10T 29/53261 Means to align and advance work part
• CPC Class Codes: Y10T 29/53265 with work-holder for assembly

Abstract

An armature shaft having a cam body extending from one end thereof is inserted into a shaft-receiving transfer block of an armature lamination and shaft assembly machine so that the cam body has a desired angular orientation relative to the axis of rotation of the armature shaft. A stack of laminations with which the shaft is assembled is rotationally oriented using a rotatable support for the lamination stack and a pair of proximity detectors which sense the position of missing portions of one or more of the laminations.

Claims

1. Apparatus for rotationally orienting a stack of laminations for an electric motor armature, a circumferential portion of the laminations at one end of the stack lacking radially outermost portions that other laminations in said stack have, said apparatus comprising a support for said stack, means for rotating said support, and proximity detectors for detecting the position of said circumferential portion to interrupt operation of said rotating means.

2. An apparatus for positioning a stack of laminations for an electric motor in a predetermined rotary alignment, each of said laminations having a plurality of radially-extending teeth, at least one of said laminations lacking the radially outermost portion of at least one tooth thereby forming at least one gap in said at least one of said laminations, said apparatus comprising:

a support member for supporting said stack;

means for rotating said support member;

a detector located adjacent said support member and capable of detecting said at least one gap; and

means responsive to said detector for interrupting said rotating means when said at least one gap is detected by said detector.

3. The apparatus of claim 2 wherein said support member includes a hub on which said stack is centered.

4. The apparatus of claim 2 wherein said detector comprises a pair of magnetic proximity detectors.

5. The apparatus of claim 2 wherein said responsive means is responsive to both said first detector and said second detector and interrupts said rotating means when both said first detector detects and said second detector simultaneously detect a gap.

6. The apparatus of claim 5 and wherein said first and second detectors comprise a mutually-spaced pair of magnetic proximity detectors.

7. An apparatus for positioning a stack of laminations for an electric motor in a predetermined rotary alignment, each of said laminations having a plurality of radially-extending teeth, at least one of said laminations lacking the radially outermost portion of at least one tooth thereby forming at least one gap in said at least one of said laminations, said apparatus comprising:

means for rotating said stack of laminations;

means for interrupting said rotating means including a detector located adjacent said stack and capable of detecting said at least one gap.

8. The apparatus of claim 7 wherein said detector comprises a magnetic proximity detector.

9. The apparatus of claim 7 wherein said stack of laminations has plural gaps, wherein said detector comprises a first detector capable of detecting one of said gaps and a second detector capable of detecting one of said gaps, and wherein said interrupting means interrupts rotation of said rotating means when said first detector detects one of said gaps and said second detector simultaneously detects another of said gaps.

10. The apparatus of claim 9 and wherein said first and second detectors comprise a mutually-spaced pair of magnetic proximity detectors.