0003790: Volumetric milling simulation of arcs creating artifacts - FreeCAD Tracker

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ID	Project	Category	View Status	Date Submitted	Last Update

0003790	Path	Bug	public	2019-01-24 10:35	2021-02-06 06:33

Reporter	sleeply4cat	Assigned To	shaiseger
Priority	normal	Severity	minor	Reproducibility	always
Status	assigned	Resolution	open
Platform	Linux	OS	Ubuntu	OS Version	16.04, 18.04
Product Version	0.18
Target Version	0.20

Summary	0003790: Volumetric milling simulation of arcs creating artifacts
Description	The volumetric simulation of gear-like objects is pretty inaccurate: Looks like it caused by a defect of the arc's end cup: its angular size two times smaller than it should be.
Steps To Reproduce	1. create path contains a gear (or any non-smooth path with "left" turn like this), test project is attached 2. start a simulation
Additional Information	OS: Ubuntu 18.04.1 LTS Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.18.15694 (Git) Build type: Release Branch: master Hash: 96dee91d5e7d7fd37f43a4dcf406a120ae1f1b8a Python version: 2.7.15rc1 Qt version: 5.9.5 Coin version: 4.0.0a OCC version: 7.3.0 Locale: English/UnitedStates (en_US) These changes can correct the situation, but I have paws.. --- a/src/Mod/Path/PathSimulator/App/VolSim.cpp +++ b/src/Mod/Path/PathSimulator/App/VolSim.cpp @@ -638,7 +638,7 @@ void cStock::ApplyCircularTool(Point3D & p1, Point3D & p2, Point3D & cent, cSimT { Point3D cupCirc(xynorm.x * r, xynorm.y * r, 0); float rotang = (float)SIM_WALK_RES / r; - int ndivs = (int)(3.1415926535 / rotang) + 1; + int ndivs = (int)(2 * 3.1415926535 / rotang) + 1; if (!isCCW) rotang = -rotang; cupCirc.SetRotationAngleRad(rotang);
Tags	#post-to-forum, Path

FreeCAD Information

sleeply4cat 2019-01-24 10:35 reporter	test.FCStd (143,104 bytes)

Kunda1 2019-01-25 17:09 administrator ~0012507	deferring to mlampert

mlampert 2019-01-25 23:25 developer ~0012520	I'm not familiar with the simulation framework in path. I believe shaise would be the best person to look at this.

Kunda1 2019-01-25 23:26 administrator ~0012521	Assigning to @shaiseger

Kunda1 2019-01-25 23:29 administrator ~0012522 Last edited: 2019-01-25 23:29	@sleeply4cat can you do us a favor and please post first to the forum to discuss? The bugtracker doesn't get as much traffic as the forum. This is obvious from the lack of activity on 0003714

Kunda1 2020-01-08 18:19 administrator ~0014020	@shaiseger ping

yorik 2022-03-03 13:55 administrator ~0016704	This ticket has been migrated to GitHub as issue 5869.

Date Modified	Username	Field	Change
2019-01-24 10:35	sleeply4cat	New Issue
2019-01-24 10:35	sleeply4cat	Tag Attached: Path
2019-01-24 10:35	sleeply4cat	File Added: test.FCStd
2019-01-25 17:09	Kunda1	Assigned To	=> mlampert
2019-01-25 17:09	Kunda1	Status	new => assigned
2019-01-25 17:09	Kunda1	Note Added: 0012507
2019-01-25 23:23	mlampert	Assigned To	mlampert =>
2019-01-25 23:25	mlampert	Assigned To	=> mlampert
2019-01-25 23:25	mlampert	Status	assigned => new
2019-01-25 23:25	mlampert	Note Added: 0012520
2019-01-25 23:25	mlampert	Assigned To	mlampert =>
2019-01-25 23:26	Kunda1	Assigned To	=> shaiseger
2019-01-25 23:26	Kunda1	Status	new => assigned
2019-01-25 23:26	Kunda1	Note Added: 0012521
2019-01-25 23:29	Kunda1	Note Added: 0012522
2019-01-25 23:29	Kunda1	Note Edited: 0012522
2020-01-08 18:19	Kunda1	Tag Attached: #post-to-forum
2020-01-08 18:19	Kunda1	Note Added: 0014020
2021-02-06 06:33	abdullah	Target Version	=> 0.20