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Messages - halfmill

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91
General Mach Discussion / Re: A-axis rotary lathe question for Mach 3
« on: November 04, 2017, 03:28:50 AM »
whoops apparently you can only attach one jpeg... so here one and I will post the other...

92
General Mach Discussion / Re: A-axis rotary lathe question for Mach 3
« on: November 04, 2017, 03:27:06 AM »
I would love to talk about making a classical guitar bridge without a rotary.  I have attached 3 photos.  Two photos are of one of my handmade instruments, shows the bridge on one from top view. The last is of an image I got off google that illustrates something that drove me to 4th axis...notice where I drew the arrow... that part that rises up to hold the strings is 90 degrees from the top of the curve of the "wings" on each side.  But please explain what you know.  bob

93
General Mach Discussion / Re: A-axis rotary lathe question for Mach 3
« on: November 04, 2017, 12:55:51 AM »
great story of how wisdom is often hidden...

94
General Mach Discussion / Re: A-axis rotary lathe question for Mach 3
« on: November 03, 2017, 09:52:18 PM »
Let me look into what your suggesting and see what I learn.  I am new to all of this.  I need the rotary to do several functions... like cutting the curve on  classical guitar bridges.   I have been a hand builder of classical guitars for many years.  I decided to build and use a cnc for making parts more accurately.  So let me take your suggestions and work with them a bit... bob   thanks again...

95
General Mach Discussion / Re: True 4 axis milling
« on: November 03, 2017, 05:07:12 PM »
As far as software goes, no one has mentioned fusion 360 by autodesk.  Now is there something that someone knows about this software that would prevent 4 axis milling... bob

96
General Mach Discussion / Re: True 4 axis milling
« on: November 03, 2017, 04:58:57 PM »
Hi True 4th axis milling.  I have your same situation, so I am very interested if a set of answers explaining  things more clearly arrives. I will try and see how g1 x-.655 y.165 z-.060 a15 f5.0 works as suggested.  My issue is that I need 4th axis to turn independently from x-y-z axises...  I think you are saying you have the same issue... so I will watch this more... bob

97
General Mach Discussion / Re: A-axis rotary lathe question for Mach 3
« on: November 03, 2017, 02:55:49 PM »
ok lets see if this works ,  bobmill attached

98
General Mach Discussion / Re: A-axis rotary lathe question for Mach 3
« on: November 03, 2017, 01:12:49 PM »
ok, let me go look for the file and see how to post it back to you.  Thank you for responding... bob

99
General Mach Discussion / A-axis rotary lathe question for Mach 3
« on: November 03, 2017, 12:21:42 AM »
Hi,  This is a Mach3 question. I purchased a Rotary lathe for A-axis.  Set it up and got it to turn.  Now my situation is that I need the rotary axis to turn at on speed and then I need to have the y axis move the spindle forward so that it "trues" the wooden dowel.  I have the spindle speed in manual so I can adjust that independent of the other factors.  So can someone help me understand how to set up codes in MDi so that while the a-axis lathe is turning at one speed, while the y-axis moves forward (y- in my case) at another speed? Right now, the rotary turns but none of the other axis will move.  For instance if the A-axis rotary is turning and  then I go to the jog-screen, none of the keys that would normally get the x or y axis to move will work.  Pressing the shift-arrow keys for instance have no effect.  All help appreciated.

100
Mach4 General Discussion / Re: Mach 4 posting request
« on: November 02, 2017, 02:11:31 AM »
Hi, when I go to Mach 4 General Discussion  there is no "New Post" button on the page.  I cant seem to get to a page that has the "new post" buttons on them, so I used this reply to ask for help.  can someone tell me how to get to the page that has the post options in the Mach4 general discussion.  thanks...

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