Roller burnishing apparatus having directly driven, coaxially di

Details Roller burnishing apparatus having directly driven, coaxially di Roller burnishing apparatus having directly driven, coaxially di

1994-05-18

1996-06-04

Lavinder, Jack W.

Metal working

Burnishing

29 905, 72 78, 310 50, B24B 3904, B21C 3930

Patent

active

055221246

ABSTRACT:
A machine tool apparatus having a burnishing head assembly coupled directly to a hollow, tubular output shaft of the motor of the apparatus. The tubular output shaft is coupled to the armature of the motor and allows a cylindrical workpiece or part inserted into the burnishing head assembly to be received and fed coaxially through the motor. The burnishing head assembly is coupled to the motor such that rotation of the tubular output shaft of the motor causes a corresponding rotation of a plurality of rolls of the burnishing head assembly. When the rolls come into contact with a surface of the workpiece or part, they bear against the surface to effect a roller burnishing of the surface. In the preferred embodiment the rolls are set at a helix angle which causes the rolls to draw the workpiece or part through the tubular output shaft of the motor and burnishing head assembly once contact with the rolls is made, to thereby obviate the need for an individual to manually feed in the part. In the preferred embodiment the burnishing head assembly is also adjustable to enable the rolls to be urged towards each other to reduce the diameter defined by the rolls. The apparatus represents a very compact and more cost efficient tool for effecting roller burnishing of cylindrically shaped workpieces.

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