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Need Recommendation for Deburring Double-Helix Shaft

Gentlepersons......

I need a recommendation on deburring media. The product to be finished is a 6" x 0.25" shaft with 4 helical grooves cut into it (sort of like a yankee-drill shaft I believe). The groove dimensions are 0.120" in width and 0.040" deep. In smoothing-out this double-helix shaft, what type, shape and size of rock would you recommend...other low cost deburring methods welcome, too.

Matt

Matt Moon
Cleveland, OH USA
2000

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Matt;

You did not say anything about the metal or if you have to hold and tolerance or RMS finish. Fastest way is to select the lastest, coarsest ceramic media possible; however, that may take off too much material and you may end up with a rougher part surface finish than what you started out with. If your part is non ferrous, select a plastic based media. If you do not have much of a burr or you are looking for a superior mirror finish and you do not want to remove any material, you can use a dry polishing process media. Normally, burrs on the parts you describe are on O.D. surfaces only; therefore, I would suggest maybe a small 3/8 inch ACT (angle cut triangle)in a fine to medium grade ceramic. Even with this small a media you will have some problems sorting parts from media after processing; therefore, you may want to go to 2,3,or 4mm ACT which we have in house.

AF Kenton
retired business owner - Hatboro, Pennsylvania
2000