B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
51/108, 51/151
B24B 33/02 (2006.01) B24B 33/08 (2006.01)
Patent
CA 1081467
EXPANDABLE ABRADING TOOL AND ABRASIVE INSERT THEREOF ABSTRACT An abrading tool is disclosed as having a tapered arbor and an abrasive insert including a helical element with a plurality of coils that receive the arbor in an axially incompressibly mounted relationship. An abrasive strip of a helical shape on the coils performs a machining operation upon tool rotation. The abrasive strip on each coil is spaced from the abrasive strip on adjacent coils. Nuts threaded on the arbor provide a means for adjustably positioning the abrasive insert axially along the arbor to control the diameter of each coil in order to initially size the insert and to subsequently compensate for wear of the abrasive strip. Different embodiments disclosed include a helical spacer which spaces the coils of the helical element, coils which are directly engaged with each other and define a helical groove that receives a spacer located between the abrasive strip on each coil, and passages through the arbor and the insert for feeding fluid to the abrasive strip.
315207
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