150624-bending-using-laser-stainless

ばね論文集　第58号（2013） 21 ステンレス鋼線のレーザ曲げ加工＊ 羽石圭吾＊＊　池堂僚一＊＊　大沢基明＊＊ Laser Bending of Stainless Steel Wire Keigo HANEISHI, Ryouichi IKEDOU and Motoaki OSAWA Laser forming is a new process which utilizes the thermal stresses generated during laser scanning. The parameters to control the process are mainly laser power scale, beam diameter, scanning speed, and repetition number of scans. Stainless steel sheet is suitable for laser bending in thermal and mechanical properties of materials. This paper investigated the application of laser bending in stainless steel wire. Temperature gradient of steel wire by laser heating was small due to shape of wire, therefore the shape of the wire is not suitable for laser bending. From these experiments, steel wire could bend in shape of coil by laser beam using proper conditions of laser irradiation. Key Word: Laser, Bending, Stainless steel, Wire 1.　緒　　言 13 -18 2.　実験方法 SUS304 1mm 30mm 100mm Fig.1 YAG Table 1 1 -89 -12 Table. 1 Conditions of laser irradiations. Fig. 1 Experimental apparatus. 2013 2 4＊ 2011＊＊ Tokyo Denki University

22 4.　結果および考察 4.1　垂直方向のレーザ照射 Fig.2 3.　レーザ成形のメカニズム 1mm 30W Temperature Gradient Mechanism, TGM Buckling Mechanism, BM Fig. 4 Upsetting Mechanism, UM 2mm/s Fig.3 3mm/s 1 5mm/s 200 38 1 0.19 / 20mm/s 200Fig. 2 Schematic illustration of laser scanning.Fig. 3 Mechanism of laser bending. Fig. 4 Relation between bend angle and scanning speed.

ばね論文集　第58号（2013） 23 12 1 0.06 / 1s 20mm0.2mm 16W 5/ 4s 10 17 1Fig.4 3mm 3mm/s 1s 3 20mm/s 0.15s 31mm 5 10 5mm/s 1128 1 1023 21 17 Fig. 6 Fig. 5 5mm 1/3 1mm 0.15mm 3mm 705mm/s 4.2　斜め方向のレーザ照射Fig. 5 Relation between bend angle and scanning distance. Fig.7 30W 5mm/sFig. 6 Relation between absorptivity and distance from Fig. 7 Relation between bend angle and irradiation angle. center of wire

24 18mm Fig.7 60 0 2 2 30 Fig.4 0 Fig.41.6Fig.8 Fig. 9 Examples of wire specimen bended by laser. 5.　結　　言 YAG 1 2 34.3　コイル形状の作成 引用文献 Fig.9 1 C.L.Yau K. C.Chana nd W.B.Lee :J ournal of Mat. 60 Proc. Tech. 82 p. 117 1998 . 2 G.T homson and M.Pridham :Mechatronics 7 5Fig. 8 Schematic illustration of stress state of wire irradiated by laser. p .429 1997 3 : 63 9 p .1330 1999 4 F. Voller tsen :Mechanisms and models for laser forming, Proceedings ofthe LANE'94 p. 1345 1994 . 5 F.Vollertsen and M.G eiger :SYSTEMS ANALYSIS FOR LASER FORMING Tr ansactions ofNAMRI /S ME 2 3 p. 33 1995 6 67 2 p 300 2001 . 7 71 4 p .481 2005 . 8 74 2 p .166 2008

ばね論文集　第58号（2013） 25 9: 6 p .120 13 .40 2 p. 63 2000 1996 . 65 9 p 1330 14 40 3 p .116 2000 15 42 1 p .34 200210 : . 74 2 16 1999 . 45 6 p .363 200511 17 : 46 1 p .160 2008 . p .19 2006 50 1 55 201012 18 70 10 p. 1311 2004