| 摘要 |
To exchange a saw blade or wood chip cutter, the inner cover surface of a unit (3) fixed to a drive shaft (11) is used, in company with the outer cover surface of a socket (1) on which the cutter or blade is fixed. The two cover surfaces are adjacent to one another, and the unit (3) has a recess for spring-loaded balls (6) which can partly emerge from their location. |
