METHOD AND APPARATUS FOR MANUFACTURING PART WITH COIL

摘要

Disclosed is a method for fitting a ring coil (5) in a channel (2) formed in the inner circumference surface of a cylindrical and hollow member (1). The method comprises a step of deforming the ring coil (5) by applying a force to one of more portions thereof radially outwardly. The deformation of the ring coil (5) causes the reduction of the circumscribed circle (10) diameter thereof and makes easy the insertion into the cylindrical and hollow member (1). After the insertion, the deformed portions thereof are respectively outwardly pressed so that the non-deformed portions thereof are respectively engaged with the channel (2). Subsequently, the deformed coil (13) is sequentially pressed to the bottom surface of the channel (2) all around so that the deformed coil (13) is returned to its original shape and the whole of the coil (5) is perfectly fitted in the channel (2).