Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1980-06-27
1982-04-06
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
198782, B24B 2104
Patent
active
043229190
ABSTRACT:
The disclosure is directed to a self-centering feed apparatus for a dual head abrasive grinding machine. The grinding heads are mounted in opposed vertical relation, and workpieces are fed therebetween along a horizontal center line or plane. The self-centering feed apparatus comprises at least two sets of control arm mechanisms mounted above and below the center line. The control arm mechanisms of each set are mounted in side-by-side relation on a common pivot shaft, and are independently movable toward and away from the center line as the workpieces move through. Each mechanism includes a drive wheel for engaging the workpiece and driving it through the machine. Each control arm mechanism is urged toward the center line by a spring loaded pneumatic actuator that provides a constant gripping force, and which also generates a resistive force that increases as a function of deflection of a control arm mechanism from the center line. This causes the workpieces to self-center on the center line and insures that they will be uniformly surfaced on both sides even in the presence of warpage or variations in thickness.
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Acrometal Products, Inc.
Whitehead Harold D.
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