Abrasive Belt Finishing
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Abrasive Belt Finishing
Abrasive Belt Finishing - Abrasive belt finishing is an important, low cost and fast process for the precision finishing of flat, concave and convex surfaces. Stock removal is accomplished by the abrasive grains on the moving belt as they continuously pass over the work surface.
Machining marks, coarse texture on cast parts etc., are refined or totally removed from the workpiece. A number of abrasive belts with varying degrees of abrasive fineness, usually roughing, polishing and fine polishing are employed for the purpose.
A lubricant applied at frequent intervals serves as a coolant also and assists in stock removal by preventing the belt from clogging with grinding debris. Mineral oil and emulsions of soluble oil and water are commonly used as lubricant.
The final surface produced by abrasive belt finishing is much superior to that obtained by turning or milling. Fig. explains abrasive belt finishing process.
Abrasive Belt Finishing
| A - Abrasive Belt | D - Table |
| B - Work piece | E - Vertical Platen |
| C - Angle Plate |
| A - Abrasive Belt | B - Contact wheel | C - Work piece |
Most belt finishing machines consist of a motor driven contact wheel and idler arrangement over which an endless, abrasive coated, tensioned belt rides.
Simple workholding fixtures may be used in place of handheld methods in order to generate end radii on parts and for sizing and finishing flat surfaces in desired locations on certain parts. Fixtures also simplify parts handling in repetitive operations on large production runs.
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