Annular cutter connecting apparatus and annular cutter

摘要

An annular cutter connecting apparatus includes an arbour 101, annular cutter locking members 113 received in holes 112 formed in the lower end portion of the arbour and a sleeve 118 surrounding the lower end portion of the arbour for connecting an annular cutter 130A to the arbour. The sleeve 118 is rotatable around its own axis so as to project the locking members 113 into the central bore 102 to engage a shank of the cutter. An annular cutter 130A has a shank portion 132A provided with locking member passing portions 133 and locking member receiving portions 134A formed in the locking member passing portions 133 to receive the locking members 113. The annular cutter 130 is connected to and removed from the arbour 101 by one-touch operation.