| 摘要 |
An annular cutter connecting apparatus includes an arbour (101), annular cutter fixing locking members (113) received in holding holes (112) formed in the lower end portion (111) of the arbour (101) and a sleeve (118) surrounding the lower end portion (111) of the arbour (101), for connecting an annular cutter (130A) to the arbour (101). The sleeve (118) has a first control face (119) having an inner diameter equal to the outer diameter of the lower end portion (111) of the arbour (101), for projecting the locking members (113) into the central bore (102) by a predetermined length when the first control face (119) engages the locking members (113), and second control faces (120) formed circumferentially in the first control face (119), for receiving the locking members (113). The sleeve (118) is rotatable around its own axis so as to cause the locking members (113) to selectively face the first control face (119) and the second control faces (120), respectively. An annular cutter (130A) has a shank portion (132A) provided with locking member passing portions (133) on that part of the outer peripheral surface of the shank portion (132A) which corresponds to the holding holes (112) of the annular cutter connecting apparatus. The shank portion (132A) has depressed locking member receiving portions (134A) formed in the locking member passing portions (133) and receive the locking members (113). The annular cutter (130) is connected to and removed from the arbour (101) in one-touch operation. <IMAGE> |
