| 摘要 |
PURPOSE: A manufacturing method of the clutch drum assembly for a mowing machine is provided to enhance concentric degree when a drum shaft is connected to a drum by forming a central groove on the central part of one surface of the drum shaft. CONSTITUTION: A manufacturing method of the clutch drum assembly for a mowing machine comprises next steps. One end of a drum shaft(50) is coupled to the clutch drum of a mowing machine by friction welding. The other end of the drum shaft comprises an inner hole. The inner hole is formed in a spline gear shape or a square shape. The inner hole is formed by cold forging. On the central part of one surface of the drum shaft, a central groove(52) is formed. The drum shaft can improve concentric degree through the central groove when being coupled to the drum. On the external diameter of a shaft, a snap ring groove(51) is formed.
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