Abstract: The invention relates to a method and a device for deforming a U-shaped electric conductor into a hairpin which can be used to produce a bar winding of an electric machine. Prior to the deforming process, the electric conductor has two parallel limbs which are integrally connected together by means of a connection limb, and the three limbs are arranged on an imaginary plane. According to the invention, the two parallel limbs are first clamped in a respective clamping device, the first limb together with the first clamping device is then held in place, the second limb is then moved away from the first limb on a circular path, thereby stretching the connection limb, and a deformation section of the electric conductor is simultaneously or subsequently moved on a guide surface of a twisting guide element, wherein the guide surface protrudes radially beyond the circular path.

Abstract: The invention relates to a method and a device (1) for deforming a U-shaped electric conductor (6) into a hairpin (19) which can be used to produce a bar winding of an electric machine. Prior to the deforming process, the electric conductor (6) has two parallel limbs (7, 8) which are integrally connected together by means of a connection limb (9), and the three limbs (7, 8, 9) are arranged on an imaginary plane (10). The aim of the invention is to carry out the deformation of the electric conductor (6) into a hairpin (19) in an inexpensive manner.