Manufacturing device for core for rotary electric machine

Abstract

Abstract PURPOSE:To eliminate the deviation of plate thickness and improve the quality of a laminated core by a method wherein a plurality of punches are arranged in the circumferential direction, the punches are successively alternated every one sheet and grooves are formed when punching and molding the core and the grooves are used as reference when laminating. CONSTITUTION:A plurality of punches are arranged circularly to a section opposing to an outer circumferential section of a core punching 1, being shifted every qually divided angle corresponding to a common measure of the number of clamping grooves or the number of welding measure of the number of clamping grooves or the number of welding grooves. Each punch is operated by means of pistons 15 through a sliding plate, and each piston 15 is worked by means of a limit switch 18. A functioning cam 17 synchronizing with the punching of a core material 2 is previously opposed to the limit switch 18, grooves 3a are formd alternating the punches every one piece successively when punching the core punching 1 from the core material 2, and the core punchings 1 are laminated using the grooves 3a as reference.

Inventors

• 👤 Kanichi Yamanaka

Bibliographic Details