Donald G Mchugh

US Patent:

6544106, Apr 8, 2003

Filed:

Apr 26, 2001

Appl. No.:

09/744760

Inventors:

Donald McHugh - Romulus MI
Jay Merkle - Williamston MI

Assignee:

Unicorn Abrasives Limited - Stafford

International Classification:

B24B 4900

US Classification:

451 21, 451 11

Abstract:

A method of dressing a grinding wheel by advancing a dressing tool across the surfaces to be dressed, the method comprising first moving the dressing tool across each side portion to remove material to make the wheel of predetermined width and then across the edge of the wheel to form corner radii, wherein the dressing tool is rotated as it is advanced and the speed of advancement across the side surfaces is different from that across the edge.

US Patent:

56477880, Jul 15, 1997

Filed:

Aug 31, 1995

Appl. No.:

8/522212

Inventors:

Donald Raymond McHugh - Northville MI
James Edward Sanders - West Bloomfield MI

Assignee:

Unicorn Abrasives Limited - Stafford

International Classification:

B24B 4900
B24B 5100

US Classification:

451 21

Abstract:

A grinding machine including a bed to receive a workpiece and a plurality of grinding wheels mounted on at least one side of the bed for grinding surfaces of a workpiece received in the bed. The grinding machine includes at least one dressing tool being mounted on a slide arranged for movement towards and away from the grinding surfaces of the grinding wheels, the slide being mounted on a carriage for movement generally parallel to the bed, the slide and the carriage being movable by a prime mover under control of a microprocessor.