Patent ID: 8844118
Filing Date: 2014-09-30
Classification: H02K,Y10T

Abstract:
1. A method of manufacturing a motor with a shaft having an axis of rotation for a power tool comprising: providing an armature, the armature including, coupling a first wire guide member to the outer end of the first tooth; coupling a second wire guide member to the outer end of the second tooth; winding wire into the slot; after winding wire into the slot, compressing the wire radially into the slot; uncoupling the first wire guide member from the first tooth; and uncoupling the second wire guide member from the second tooth, wherein providing the armature includes providing the armature wherein a tooth tip defines the outer end of the first tooth and a tooth tip defines the outer end of the second tooth, wherein a slot fill area of the slot is defined as a cross-sectional area of the slot radially from the tooth tip of the first tooth and radially from the tooth tip of the second tooth taken toward the yoke perpendicular through the axis of the shaft, wherein a wire fill area is defined as the total cross-sectional area of the wire within the slot fill area, and wherein a slot fill percentage is defined as the slot fill area divided by the wire fill area, the method further comprising, winding the wire into the slot and compressing the wire into the slot to achieve a slot fill percentage of at least 70 percent.