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The merits of the design not the only factor but the stability of operation affect the performance of band saw machine. For fully automatic band saw machine, the restricted operations caused absolutely fault like saw blade broken easily and saw blade life cycle shortly. The band saw machine is then useless for production as machine tool even if the shape is nice. How to higher the life time and cutting function of saw blade applying in band saw machine become a very important topic. Nowadays, bi-metal saw blade is most popular tool for band saw machine. The blade material 50CrNiMoVA firstly joint with the cutting teeth material M42 using electron beam welding, and apply heat treatment to form the bi-metal saw blade. The saw blade was turn reputably from 0 to 90 degree to execute the cutting operation surrounding the driven and idler wheels with tighten tension. There are many factors like saw blade bear turn torque, tension, cutting forces …etc. result a complex stress system. Therefore, the durability of saw blade must be shorter as production machining without life time analysis compared with machine design specification. And, the main reasons of losing efficacy are saw blade broken and teeth wear or collapse. The mainly motivations of this research are both of reducing the breakage of saw blade and extending the tool life time. Most of turn angle condition parameters of different widths saw blade setting depend on the experience of designer. It will cost much time and a big budget to get some accuracy data from a mount of experiments record. The finite element analysis software package code ANSYS Workbench was used to deeply simulate the key parameters running on the band saw machine. The optimization of band saw cutting conditions to match band saw machine design especially to higher machining efficiency and longer tool life time are presented.
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