Importance

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Abstract

The invention relates to equipment for producing coils of a stator of an electrical machine and a method for producing coils. The coil is formed by connecting arms (6) of conducting pins (4) inserted into the slots (3) of a magnetic circuit (2) of the stator (1). The equipment comprises a shaper (10) axisymmetric about an axis (5), and the shaper (10) is designed to be placed inside the free ends of the arms (6) and in contact with the magnetic circuit (2). A series of guide-pins (12) equal in number to the slots (3) is designed so that each penetrates into a hole of the shaper (10). Each hole is drilled along an axis. The axes of the holes (13) meet at a first point (14) on the axis of revolution (5) of the shaper (10). Each guide-pin (12) is designed to separate two arms (6) of pins (4) inserted into two adjacent slots (3) to guide the arms (6) in a fixed direction, distinct from the direction of the arms (6) in their slot (3). The method using the previously described equipment includes successively carrying out the following operations. The pins (4) are inserted according to a wiring scheme for the coil; The first shaper (10) is put into place along the axis of revolution (5) of the magnetic circuit (2) on the free side of the arms (6) in contact with the magnetic circuit (2); The first series of guide-pins (12) are put into place. Each of the arms (6) is folded by pressing it onto a guide-pin (12) of the first series.

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First Claim