Feed along the X axis

[Joneb]

Good Morning
I want to use a profile cutter on the inside of the circle, is it posible to drop the cutter in the center of the circle and feed in the X axis using Freecad before running the cutter round in steps. I have only shown the toolpath for cutting out the disc.

Regards John

Tank1.FCStd

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OS: Windows 10 (10.0)
Word size of FreeCAD: 64-bit
Version: 0.20.24693 (Git)
Build type: Release
Branch: master
Hash: e01f0d25d5f3ef9ceb66aa087212121e9f2f2e8b
Python version: 3.8.8
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.5.1
Locale: English/United Kingdom (en_GB)

[chrisb]

I don't think this is possible with the profile operation. You can set the StartPoint to (0,0), but then the first move will be a rapid move towards the outer circle.

[memfis]

In any case, any result of FC in the sense of g-code should be watched in a text editor. And this fastest tool approach, which is done by G0 command, can be easily replaced by G1 F-necessary_speed

In the program that controls the machine tool (e.g. LCNC) you can use your mouse to highlight the desired (for editing) part of the trajectory (G0 transitions look different color compared to G1) = you will find out the line number in which you need such replacement.

[GeneFC]

I would use the "LeadIn" dressup. I am guessing you already have a large roughing hole in the center of the object. The LeadIn has various options for size and shape.

You can also do as chrisb suggested (Start Point) and do a simple edit on the g-code file to change the G0 to G1.

gene

[bmsaus4ax]

Good Morning
I want to use a profile cutter on the inside of the circle, is it posible to drop the cutter in the center of the circle and feed in the X axis using Freecad before running the cutter round in steps. I have only shown the toolpath for cutting out the disc.

As Gene has said , lead in/out dress up will allow this. Also setting start point in the Profile operation as true with X0.0 , Y0.0 will produce the X only movement.
See the the attached .fcstd file and the Data Tab highlighted properties in the screen shot.
Basically the leads are your profile radius positive and negative as in example.
.
OS: Ubuntu 20.04.3 LTS (ubuntu:GNOME/ubuntu)
Word size of FreeCAD: 64-bit
Version: 0.20.25566 (Git) AppImage
Build type: Release
Branch: master
Hash: 8c361dd3fc83840a911da950a845eb9f9342a0b6
Python version: 3.9.6
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.5.2
Locale: English/Australia (en_AU)

[Joneb]

Thankyou all for the help, some great ideas but in this case I found it easier to hand code it as I needed to feed the cutter into the model to get the profile .
Thanks Again
John