Arbor apparatus for rotary tools

Details Arbor apparatus for rotary tools Arbor apparatus for rotary tools

B - Operations, Transporting

23

B

B23B 47/00 (2006.01) B23B 31/00 (2006.01) B26D 1/44 (2006.01)

Patent

CA 2485935

An arbor apparatus for mounting an attachment to a rotary tool includes a mandrel with a drive stage insertable into a passage in a drive boss such that rotation of the mandrel rotates the boss. The boss has a polygonal drive head engageable with the drive opening of the attachment. One end of the mandrel has a locking plate that approaches the drive head when the mandrel is inserted into the boss. The locking plate is sized to pass through the drive opening while also partially extending radially beyond the edge of the drive head. With the mandrel inserted through the boss, the locking plate is passed through the drive opening of the attachment. With a gap being maintained between the locking plate and the drive head, the mandrel is manually rotated to allow the drive head to enter the drive opening, simultaneously causing portions of the locking plate to extend beyond the edges of the drive opening. A locking nut is then tightened onto a threaded shaft axially adjoining the drive stage, thereby clamping the attachment between the locking plate and the drive boss. A chuck stage axially adjoining the threaded shaft can then be used to mount the apparatus to a rotary tool in well known fashion.

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