| 摘要 |
PURPOSE: A pneumatic tool is provided to increase the speed of revolution, and improve precision, durability, and productivity. CONSTITUTION: A pneumatic tool is composed of a cylindrical casing(41) having a plurality of air discharge holes(43), a shaft(44) rotatably coupled to the inside of the casing, a chuck(45) coupled to the lower end of the shaft and rotating with the shaft, a first bearing(46) coupled to the lower circumference of the shaft, a flow guide(47) for guiding compressed air to smoothly discharge the compressed air, a first rotary turbine(50) rotated by the injection force of the compressed air and applying rotary force to the shaft, a fixed turbine(52) coupled to the shaft by a spacer, a second rotary turbine(51) rotated by the injection force of the compressed air and applying rotary force to the shaft, an end plate(54), a nut(57) coupled to the top of the shaft, an end plate cover(58) coupled to the center of the end plate, and a casing cover(60). The end plate guides the compressed air into the inside of the turbines. The casing cover is coupled to the top of the casing, and has an air inflow hole(59).
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