CUTTER FOR FORMING CORRUGATED FIN

• Main Authors: EGAWA TSUNEO, OGAWA MAKOTO, KUBO TOSHIO, NAKAMURA YOZO
• Format: Patent
• Language: English
• Published: 19.10.1988
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

PURPOSE:To equalize a forming pitch by uniformizing the height in bending a fin by creasing a formed fin R equiv. part with the projection of the tooth tip part at the front in the rotating direction of the cutter for forming a corrugated fin and the groove at the cutter tooth bottom equiv. part of the other part. CONSTITUTION:The material 2 for a fin is formed in a looper 7 between the cutters 3 for forming a corrugated fin and formed in corrugated shape as well, becoming at equal pitch by a pitch deciding device 4 and being cut 5 in the specified length. A projection 17 is provided at the tooth tip part near a looper forming tooth part 8 at the front in the rotating direction of this cutter 3 for forming a corrugated fin and a groove is provided at the meshing cutter equiv. part of the other part. With this projection 17, the R equiv. part 13 of the material 2 is creased 12 to uniformize the folding height of the fin within about + or -0.05mm. The fin coming out of the pitch deciding device 4 is formed at equal pitch and the heating efficiency of the corrugated fin can be improved.