POWER TRANSMISSION SHAFT, MANUFACTURING METHOD THEREOF, AND MANUFACTURING DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce a cost for surface treatment by injecting efficiently shot particles, in a power transmission shaft with at least two radial circular holes provided adjacently each other. SOLUTION: A feed pipe 10 of a shot peening device A is inserted into the one radial circular holes 20b out of the two radial circular holes 20b, 20c provided near to each other in the power transmission shaft. A tip side of the feed pipe 10 is inserted into a guide hole 17a of a guide member 17 arranged in an under side of the power transmission shaft 20. The shot particles are injected together with air under such condition from an injection hole 10a formed to be opened toward a diagonal lower side on a side face of the feed pipe 10. The feed pipe 10 is turned therein within a prescribed rangeαaround an axis to inject the shot particles preponderantly to the other radial circular hole 20c. COPYRIGHT: (C)2007,JPO&INPIT