bridge saw cutter for marble with rotating table
I am working on a project, to convert an old bridge saw cutter for marble with rotating table for the work piece
to a cnc milling machine. My question is how to configure the kinematics of the 4-axis system.The tool is a disk saw (20cm .. 30cm diameter)
that moves in x,y,z axes and at the same time the work piece table can rotate when making curves.
I am going to use servo drives with analog reference inputs and incremental encoders for feedback.
For the logic interface I will use some mesa cards.
Any suggestion for the appropriate cam processor for the gcode generation of dxf files?
I am already familiar with linuxcnc and mesa cards that i have used in the past on other projects.
Thank you in advance.
George
Please Log in or Create an account to join the conversation.
Do you need to coordinate the table rotation to the other motion, or us it largely indexing?
Please Log in or Create an account to join the conversation.
Please Log in or Create an account to join the conversation.
The tool is a disk saw (20cm .. 30cm diameter)
that moves in x,y,z axes and at the same time the work piece table can rotate when making curves.
I have difficulty picturing this. How are you cutting a curve with a disk saw?
[edit]
Is like at 1:07 in this video (only in your case the work piece rotates)?
If so you don't need any special kinematic in LinuxCNC.
Please Log in or Create an account to join the conversation.
[edit]
Ok, I maybe kind of get it. For the mentioned cases above. You'd want to rotate the C table so the saw remains tangential to the curve and you'd then need the kinematic to adjust the XY-position according to the C axis angle.
For this you could use for example the included XYZAC-trt kinematic and just ignore the A axis.
However you would need a way to calculate C-axis angles depending on the tools position along the arc.
Please Log in or Create an account to join the conversation.
The table (C axis) is rotating relative to Z axis, which is perpendicular to XY plane.
The disk diameter could be 20cm in minimum.
Please Log in or Create an account to join the conversation.
[edit]
Should be possible, I guess. If the calculation of the c-axis angle could be integrated in the XYZC TCP kinematic then you might not even need a CAM. It would just be a regular 3 axis gcode.
I'm not sure I'd want to be the one responsible for writing the c angle calculations though. Just imagine the mayhem if it missed a discontinuity in the math and the resulting angle suddenly changed from positive to negative.
Please Log in or Create an account to join the conversation.
sheetcam.com/Register/purchase
[edit]
seems this user also uses the SheetCAM solution for this.
www.forum.linuxcnc.org/10-advanced-confi...h-xy?start=50#248422
Please Log in or Create an account to join the conversation.
instead of rotating the disk saw, the table rotates.
Please Log in or Create an account to join the conversation.
- tommylight
- Away
- Moderator
- Posts: 19106
- Thank you received: 6398
Posting a real picture of the actual machine would save us a lot of time trying to guess, so why don't you?The machine is similar to the one in the picture.
-
The picture you posted, that is not of your machine, i have seen those and have access to if the need arises, but much bigger. Same everything, but bigger, Italian made, NC controlled, etc.
Please Log in or Create an account to join the conversation.