I am continuing to try to machine my small part with a slot.
For this particular version, the slot has to be 0.015" wide, but I have a 0.013" milling cutter. Therefore I need to "spiral" around the slot. I have tried profile and pocket with identical results.
My actual part will have a larger slot partway through, and a smaller slot through. The path for the tool ought to be an oval that follows the edge of the slot. However, if we look at the larger partially-through slot, each end has the radius offset a little, and a small diagonal line joining it to the straight sides. Looking at the smaller through slot, the shape is quite funky, not resembling an oval at all.
Finally, I made a sample file with just a small through slot, and it shows similar.
In the cases I am attaching I am using profile. However, if I selected the sides of the slot (two straight sides, two half circular sides) and did a pocket, I get virtually the same path.
Am I using these wrong, or is there a bug? Any suggestions to get this right?
Thanks
Chuck
OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.23756 (Git)
Build type: Release
Branch: master
Hash: 9c6e9184930a52b165a0b7274e3a45d1006bfe67
Python version: 3.8.6
Qt version: 5.12.5
Coin version: 4.0.0
OCC version: 7.4.0
Locale: English/United States (en_US)
[SOLVED] Slot profile issue
Forum rules
Be nice to others! Respect the FreeCAD code of conduct!
Be nice to others! Respect the FreeCAD code of conduct!
[SOLVED] Slot profile issue
- Attachments
-
- DemoSlotMillProblem.FCStd
- (43.46 KiB) Downloaded 24 times
-
- DemoSlotMillProblemB.FCStd
- (30.44 KiB) Downloaded 26 times
Last edited by ceandraka on Tue Jan 26, 2021 12:52 am, edited 1 time in total.
Re: Slot profile issue
I did a recompute and the shapes look OK.
Not sure why, but sometimes things don't update on their own.
OS: Windows 7 SP 1 (6.1)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.23756 (Git)
Build type: Release
Branch: master
Hash: 9c6e9184930a52b165a0b7274e3a45d1006bfe67
Python version: 3.6.8
Qt version: 5.12.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/United States (en_US)
Gene
Not sure why, but sometimes things don't update on their own.
OS: Windows 7 SP 1 (6.1)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.23756 (Git)
Build type: Release
Branch: master
Hash: 9c6e9184930a52b165a0b7274e3a45d1006bfe67
Python version: 3.6.8
Qt version: 5.12.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/United States (en_US)
Gene
- sliptonic
- Veteran
- Posts: 3457
- Joined: Tue Oct 25, 2011 10:46 pm
- Location: Columbia, Missouri
- Contact:
Re: Slot profile issue
You need to set your geometry tolerance and curve accuracy lower.
Re: Slot profile issue
Gene: Tried recompute, did not fix it.
Sliptonic: That was it. Changed tolerance, and then forced recomputed.
Thanks guys! Marked as solved
Chuck
Sliptonic: That was it. Changed tolerance, and then forced recomputed.
Thanks guys! Marked as solved
Chuck