US2939641A

US2939641A - Armature winding jig

Info

Publication number: US2939641A
Application number: US668791A
Authority: US
Inventors: Maurice C Setley
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-06-28
Filing date: 1957-06-28
Publication date: 1960-06-07
Anticipated expiration: 1977-06-07

Description

June 7,4960

M. ('2. SETLEY ARMATURE WINDING JIG Filed June 28, 1957 INVENTOR MAURICE C. SETLEY ATTORNEY W DING' Maurice C. Setley, 37 12 Park Ave, Kansas City, Mo.

Filed June as, 1957, Ser. No. 668,791 1 Claim. (Cl. 2 42-13) This invention relates to an improvement in jigs for winding armatu-res and more particularly to the structure thereof for holding armature cores of various diameters in a block having a grooved face; the armature diameters having a sharper curvature than the groove in the face of the block.

Heretofore jigs have been made and sold for clamping a particular diameter of armature core in a block and numerous jigs were required for a plurality of diameters of armature cores.

An object of the present invention is to provide a block, with a grooved face in one side thereof, having guide plates spaced therefrom by brackets secured to the sides of the block for winding the wire on the armature core, whereby one edge of each plate may be adjusted against opposite sides of an armature core-having a sharper curvature than the curvature in the face of the block.

Another object of the invention is to provide each bracket with a 'leg portion and an arm portion joined at right angles to each other, the arm portion of each bracket being slotted for adjustment of a respective guide plate secured thereto, and the leg portion of the brackets being slotted and adjustably secured to the sides of a block, whereby the guide plate edges may be adjusted from the face of the block to selected edges of the slots of an armature core to be wound with wire.

With these objects in view the invention will be more fully understood from the accompanying drawing, this specification, and the claims appended.

In the drawing:

Figure 1 is a plan view of the improved jig, illustrating the face of the guide plates secured to the brackets and the face of the block having the longitudinal groove therein. The guide plates are illustrated with the opposed edges thereof adjustably spaced to the width of the block.

Figure 2 is a longitudinal side view of Figure l, illustrating one side of the block with the bracket leg portions being adjustably secured thereto, the bracket arm portions are secured to the guide plates, and the guide plates are spaced from the face of the block. The bracket leg portions have a portion thereof broken away to save illustrative space. The guide plates are illustrated with dash lines for a skew type slot.

Figure 3 is an end view of Figure 1, and also illustrating an armature core having the same diameter as the width of the block. The armature core is confined between the opposed edges of the guide plates. The armature core is clamped between the concave face of the block and a rotatable center clamp adapted to be held in a rotatable device similar to -a lathe.

Figure 4 is an end view of the jig illustrated in Figures 1, 2 and 3, with the exceptions that a small armature core is shown, and the opposed edges of the guide plates are adjustably spaced against the armature core,

and the guide plates are adjusted to the edges of the slots in the armature core to be wound. The guide plates are Unitcd Star Pe i Q I and then wound as heretofore described.

Patented June 7, 19cc adjusted by means of the bracket leg portions secured to the edges of the block.

- The block 10 is of rectangular shape and has a groove 1 1 located in one face thereof. The groove 11 is of uniform shape throughout the length of the block. A pair of screws 12 are illustrated as a means of attachment to a rotatable device such as a lathe not illustrated.

A centering key 13 is illustrated for centering any of the armatures represented by the largest core 14 and the smallest core 15 held in the the groove 11 of the block 10. The block 10 is made of a soft metal such as aluminum in contrast to steel so as to resist slippage of the armature core lengthwise in the groove 11 of theblock 10.

Opposite sides 16 of the block 10 are tapped at 17 and receive studs or cap screws 18 secured therein. The studs 18 project from the edges 16 of the block 10 for clamping the bracket leg portions 19 thereto by means of the slots 20 and nuts 21. The arm portions 22 are joined at right angles to the leg portions 19 and also have slots 23 therein. The arm portions 22 of the brackets 24 project in opposite directions away from the block 10 and are secured to the guide plates 25 by means of bolts or screws 26.

The guide plates 25 are located flatwise on the arm portions 22 of the brackets 24, and are spaced longitudinally with respect to the longitudinal groove 11 in the face of the block 10. The lead ends 27 of the plates 25 are in the direction of rotation and are curved slightly backward toward the opposite face 28 of the block 10, so as to guide the armature wire for the winding into the core slots 29.

The opposed edges 30 of the guide plates 25 are usually spaced parallel and are adapted to be adjusted against the

armature core

14 or 15 when the centering key 13 is in the core slot 31 or 32. The centering key 13 is secured to the integral screw 33 located in block 10 and may be turned ninety degrees from that position shown in Figure l to accommodate a wider type of core slot than shown.

The actual operation of winding an armature core is old and well known. It is obvious that, the block 10 may be attached to an adapter by means of screws 12 for rotation and the centering clamp 34 may be clamped to the opposite side of the

armature core

14 or 15 from the centering key 13. The centering clamp is usually held by the center rest of a lathe like structure not illustrated.

The armature wire 35 for winding, is threaded into the opposite slots of the armature core until a required amount of wire 36 is wound therein, the armature core is then released, turned to the next opposite pair of slots, It is well known that this procedure is continued until all of the slots are partially filled and the wire is secured in the slots by any of the well known means such as strips or sticks 37.

It is well known that some armature cores are made and used with skew type slots relative to the longitudinal axis of the armature core and I have illustrated the guide plates skewed in dash lines in Figure 2 to correspond with the skew type of slots for winding.

What I claim, as new and desire to secure by Letters Patent, is:

A jig adapted for holding an armature core in a winding rotatable position, including a block having at least a face with two spaced parallel sides, and a pair of guide plates; the improvement comprising; the face of said block having a groove recessed therein and located parallel with the sides of said block, the groove of said block having a lesser width than the width of said block, a pair of brackets, said pair of brackets having opposed parallel faces detachably secured to the respective sides ofsaid block, said pair of brackets having respective faces ass-amt I F a.

block adapted to hold an armature core in relative alignment with said'block.

thereon projected outwardly from the sides of said block at'right angles thereto, said second mentioned faces having the pair of guide plates detachably secured flatwisev thereto, said pair of guide plates having opposed longitudinal edges adapted to be adjustable on said pair of 5 brackets from a position aligned with the sides of said References Cited in the file of this patent UNITED STATES PATENTS block to a selected spaced position being substantially 2,622,715 Probst 1359- 23, 1952 less than the width of the groove in said block, and said guide plates on said pair of brackets being adjustable in FOREIGN PATENTS spaced parallel relation with the mentioned face of said 10 20,997

Great Britain Sept. 22, 1911