| 摘要 |
<p>PROBLEM TO BE SOLVED: To set outer diameters of a cutting ring and a guide ring in the same outer diameter in a slit working apparatus that shears successively supplied plate material in two rows. SOLUTION: Circular concave portions 31a and 37a are formed in the outer periphery of the first and second cutting rings 31 and 37 respectively, and circular convex portions 33a and 35a of the first and second guide rings 33 and 35 are respectively formed in the position opposing to the concave portions 31a and 37a. Then, outer diameters of the first cutting ring 31, the first guide ring 33, the second cutting ring 37 and the second guide ring 35 are set as the same outer diameter D.</p> |
