Winding device and manufacturing method of rotating electric machine

The winding device (100) is provided with: a bobbin (21) serving as a supply source of a wire (11); a nozzle (42) that winds the wire into a plurality of layers on the workpiece (41); a servo tensioner (22) that applies tension to the wire; a wire length adjustment mechanism (30) that is provided between the nozzle and the servo tensioner and that adjusts the wire length from the bobbin to the nozzle; and a control unit (50) that controls the wire length adjustment mechanism so as to adjust the wire length to a wire length at which the rotational speed of the servo tensioner is constant, on the basis of the rotational angle of the nozzle. The wire length adjustment mechanism has servo motors (66a, 66b), and movable wheels (32a, 32b) rotationally driven by the servo motors. 绕线装置(100)具备：作为线(11)的供给源的线筒(21)；喷嘴(42)，其将线在工件(41)上卷绕成多层；伺服张紧器(22)，其对线施加张力；线长调整机构(30)，其设置于喷嘴与伺服张紧器之间，调整从线筒到喷嘴之间的线长；以及控制部(50)，其根据喷嘴的旋转角，对线长调整机构进行控制以调整为使得伺服张紧器的转速恒定的线长。线长调整机构具有伺服马达(66a、66b)、以及由该伺服马达旋转驱动的可动轮(32a、32b)。