Vol.5 No.3 2012

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Research paper : Spinning process using robot technology (H. Arai)−152−Synthesiology - English edition Vol.5 No.3 (2012) has been presented at various exhibitions such as the Japan International Machine Tool Fair and Ohta Industrial Fair, where the noncircular shape spinning was demonstrated. Daitoh Spinning started taking orders for machines based on this prototype. Only one order has been shipped so far, which was delivered to a sheet metal fabrication company called Papas Co., Ltd. (Fig. 8).2 Background and motivation2.1 Reflection of excessive emphasis on academismThis study was started around 2001 when AIST became an independent administrative agency. The beginning was a reflection of research in the robotics field (or the excessive emphasis on academism) that the author conducted during his time at the Agency of Industrial Science and Technology. For example, looking back at what we did, when explaining the objective of our research in the introduction of an academic paper, the goals set were impossible to realize in the near future and were fictions created to justify the academic research. Although the research objective of Fig. 6 Synchronized spinning using two-roller spinning machineFig. 8 Spinning machine for non-circular shapes introduced to a company423142314231Table 1 Specifications of prototype machineServomotor + planetary gear, rated power 7.5 kW, rated speed 375 rpmSpindleWorkpieceServomotor + ball screw, rated thrust 10000 NZ axis (spindle direction)Balanced-attraction linear motor, rated thrust 4000 NX axis (radial direction)DimensionMaximum diameter 400 mm, maximum height 350 mmWidth 2875 mm × Depth 1820 mm× Height 1895 mmFig. 7 Prototype of practical spinning machine for non-circular shapes

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