I Need help for 4 axis cnc

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26 Mar 2020 13:21 #161563 by tommylight
As far as i can tell from that drawings, it is a dual drill setup with 90 degree rotation.

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26 Mar 2020 18:23 #161592 by bbsr_5a
Replied by bbsr_5a on topic I Need help for 4 axis cnc
Hi
solidcan has a 4th axis post for Fanuc11m that will shure fit your need
if not licenced you simply can use a Free Autodesk product for small busines
the 4th axis is only a setup

i mainly use them as a B axis as the Y is then the main axis and the machine dont move in X Gantry
its basicly a lathe type machine 3Axis YZB with X takeng the center pont wherever 4th axis is located at the large Table

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26 Mar 2020 23:53 #161636 by Endless
Replied by Endless on topic I Need help for 4 axis cnc


Please watch video... with this machine I want to make holes on the 4 sides of the wooden panel. I don't want to simulate. just turn 90 - 180 - 270 - 360 degree enough for me

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27 Mar 2020 00:39 #161644 by tommylight
bilmem turkce abey ! :)
That explains the workings nicely, should not be hard to do, i am sure we have done much more complicated stuff with Linuxcnc.

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27 Mar 2020 23:00 #161765 by cmorley
Replied by cmorley on topic I Need help for 4 axis cnc
To my thinking it depends how you need to use the drill.

One way would be that the drill is completely independently controlled in the z axis -basically meaning you have two z axis. (maybe z and w?)

The second is that the drill when used is always use fully extended and you use the main z axis to set it's drill height.
You position the drill (extend / rotate) using HAL and then it's just tool offsets.

Andy is usually good at thinking these things through in smart ways.

Chris

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28 Mar 2020 21:57 #161846 by andypugh
Replied by andypugh on topic I Need help for 4 axis cnc
Custom kinematics and drilling in the W axis might be a way to go.

Though it would be possible to use coordinate-system rotation so that the drill moves are straight X (or Y, if you prefer)

Imagine drilling a hole at 45 degrees, and assuming that the rotary axis is C.


G0 C45
G10 L2 R45 (rotate the XY axes about Z)
G1 F20 X100 (drill a hole at 45 degrees)

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03 Apr 2020 23:27 #162618 by Endless
Replied by Endless on topic I Need help for 4 axis cnc
I have no information about what you say. because this is my first cnc machine. Will a post process be required for the CAM program? I don't even know this... please someone guide me. I would be very happy if he tells me what to do step by step...

I do not want the machine to work simultaneously. just turn the axis 90-180-270-360 in the video and drill the hole

Please help

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03 Apr 2020 23:31 #162619 by Endless
Replied by Endless on topic I Need help for 4 axis cnc
Thanks for answer but ı dont know HAL :(

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04 Apr 2020 07:16 #162646 by bbsr_5a
Replied by bbsr_5a on topic I Need help for 4 axis cnc
all you need to know in first hand is that it will work with linuxcnc so you can start to build
the postprocess is your Word/Notpad or as you are on linux GEDIT to change your axis 0-90-180-270 by adding the command
your CAM and Post works flat out
the 2 Tools will have diferent coordinate system G54 G55 they arte on so the offset is non problem
the Z is for the First tool
the w for the Second
if it is only this 2 tools not a 11head machine it is far easyser then you think

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04 Apr 2020 10:36 #162666 by rodw
Replied by rodw on topic I Need help for 4 axis cnc

Endless wrote: Thanks for answer but ı dont know HAL :(

you will by the time you build this machine :)

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