On Thu, Oct 7, 2010 at 8:01 PM, Greg Bentzinger <[email protected]>wrote:
> Stuart and friends; > > I have been thinking about this manual MPG rigid tapping and while its > fairly straight forward on a normal 3 axis mill or 2 axis lathe there needs > to be more for 5 axis applications. Strange that Stuart didn't mention it. > Yes that is VERY strange - I was !!!! thinking !!!!! it. :) > > I think it might require a new custom G & M code that would lock motion to > be perpendicular to the hole's plane. Pardon I'm hunting for the best way to > describe this. > The G and M codes are functional in EMC2. Use the W axis and the Cinci will drill along the spindle at whatever angle the A and B are programmed. > > A 5 axis machine with the tool tilted in the AB axis would define the hole > plane to be perpendicular to the tool in 2 axis. This would define the > movement of the spindle. > The Cinci does not have a quill - EMC2 moves XY and Z to simulate a W axis and moves the spindle along it's axis. > > > The other issue being like Stuart mentioned, This will require a very high > count encoder and a very strong and responsive spindle. This option is not > for mediocre equipment. > The encoder count must be high for the spindle to be useful as a C axis. I believe the Enshu spindle will NOT be useful as a C axis but it will be able to rigid tap with the MPG. I will move the spindle using the MPG and use EMC2 to drive the Z axis coordinated with the spindle. I have the spindle tuned in one configuration. It is very solid. > > Now - I was told my uncles (my toy) Mori Seiki SV50 can do this, you must > just switch to IPR vrs IPM and do a M19 G84 Fxxxx. > What control does the SV50 have? I would like to see/try it. My 5 axis bridge (XYZ w/BC head) with Fanuc 15M will MPG drill along the spindle (simulating a W axis). It will MPG mill along the U and V axes as well. This requires no programming. The position of the BC head allows the control to orient the motion the the UVW axes. The UV motion has not proven useful. The drilling along the spindle axis is useful that is why I am wanting to MPG tap along the spindle. I have not tried tapping with the bridge. I see no way to control the spindle. I don't believe EMC2 will move the UVW axes with the MPG. I believe it is being worked on but I am not sure. Clarification would be greatly appreciated. > > The 30hp spindle will allow a M03 S0001, and I dare you to try and stop > that spindle even at 1 RPM. > Its great to have plenty of overkill power on tap. (pardon the pun) > The Enshu spindle is 50 taper - 7.5KW (10 hp). The two speed gearbox allows it to generate a lot of torque in low gear. I have seen it mill a 6 inch X 10 inch window in a 6 inch thick plate of steel in one pass. We drilled an oversize hole through the plate (in a corner of the window) and used a 1 inch X 8 inch LOC roughing mill. It cut the full depth and dropped out the window in one pass. I think it will be strong enough and rigid enough to tap a hole with the MPG. > > Greg > > thanks Stuart > > ------------------------------------------------------------------------------ > Beautiful is writing same markup. Internet Explorer 9 supports > standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. > Spend less time writing and rewriting code and more time creating great > experiences on the web. Be a part of the beta today. > http://p.sf.net/sfu/beautyoftheweb > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- dos centavos ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today. http://p.sf.net/sfu/beautyoftheweb _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
