Welcome to the Tormek Community. If you previously registered for the discussion board but had not made any posts, your membership may have been purged. Secure your membership in this community by joining in the conversations.www.tormek.com
Started by JR DUBUY, January 14, 2020, 09:33:37 AM
Quote from: JR DUBUY on January 18, 2020, 10:02:47 PMHi After experiments several settings for sharpening the roughing gauge with the SV186 tool, I finally prefer the following :- JS 6- hole B- protrusion 55mmThe result is closer to TORMEK recommandations when using SVS-50 (alpha angle=35° and a positive rake angle)It works very well and the SV186 is helpful for the repeatabilityregardsJR
Quote from: Rob on January 14, 2020, 04:39:53 PMHi there and welcome to the forum.The geometry of elliptically ground gouges is moderately complex. But it boils down to the fact you need to know that 3 adjustments affect the geometry and by that I mean the bevel angle and the degree to which the wings are swept back. They are:- the distance the tool is protruding from the jig (P)- the distance between the pivot point and the grinding media (hole A or B with Tormek's quick set jig) which is the distance the USB is from the grinding media- the angle at which the bevel is presented ie the angle between the tool axis and the grinding medium axis. (knuckle setting in the elliptical grinding jig). That's what the manual refers to as JS 2 or 3 or 4 etcIf the chart shows the same angle for any of these variables, then one or both of the other 2 variables must have been altered.To add to that is also an operator component ie the time spent focusing grinding on different parts of the bevel. This is classically demonstrated by spending too much time on the nose (goes flat and dips) or not enough (gets pointy and is very frisky during turning). Or too much wing grinding can wear them out at the backs and not enough means they dont sweep right round and have no cutting edge at the back. But the angles are managed by adjustment of those 3 variables. That also holds true for every other jig based grinding system in the market. one has control of these 3 factors. Tormek just happens to do it very well because of the precision engineering and good design.
Page created in 0.221 seconds with 19 queries.