Knurling, particularly on a cylindrical object is straight forward... but on the face of a plate it is a bit more involved, especially when that plate is 22 inches in diameter!
in this video i show two different techniques: knurling on a milling machine (technically this is not really knurling but more of a cross hatch) and knurling on a lathe.
for the milling machine we used the HAAS VF-6 and fitted it with a boring head and bar with a braised carbide tool. running it at 100 rpm with a 10ipm feed rate and .005" DOC turned out to be just right. the only problem with this method is that at .005" deep it is not deep enough to act as a rough surface. the other problem: this is a one shot deal! you cannot pick up the pattern once it is cut on the plate.
for knurling on the lathe we used the HAAS SL-40 with a shop made knurling tool and a single double cut knurling wheel. while this method was effective it is far from perfect. because the wheel is straight across the face, and it is connecting to the plate on a radius path, the outer edges of the wheel are trying to roll at different angles and speeds. this results in a little bit of double cutting on each groove. additionally, there are several places on the plate diameter where the diameter of the knurling wheel does not divide evenly into the circumference. this results in a tremendous amount of double cutting, and can be seen in the video as mangled knurls.
for the purpose of this part, the only objective was a VERY rough surface, since this plate is used to position glass jars in a pickle plant packaging system.
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Негізгі бет Тәжірибелік нұсқаулар және стиль Face knurling a 22" plate on a lathe VS on a mill
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