Dear Fellow FreeCAD users,
We are preparing the design of a tube coil applying the sweep feature of FreeCAD but face a challenge, maintaining the profile shape when sweeping along the center line of the part, and we would be so grateful for your contribution for overcoming this problem.
1. Original design (attached image Tube Coil 01)
We prepared this part applying the helix functionality for generating a center line followed by the sweep feature of the part design workbench. Works great. Unfortunately, the processing equipment for manufacturing this part can handle only bends with constant radius.
2. Modified design (attached image Tube Coil 02)
In order to accommodate limitations of the processing equipment, the center line of the part was discretized applying the curves workbench, and disctances between points were modified to bends with constant radius or straight lines.
Upon sweeping the tube profile along the new center line, the shape of the tube can not be maintained but slowly becomes deformated along the sweep edge.
Q: Obliged to design the coil with a center line consisting of 1) straight lines or 2) arcs with constant radius, how could we successfully avoid the deformation when sweeping?
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.4 (GitTag)
Build type: Release
Python version: 3.6.6
Qt version: 5.6.2
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedKingdom (en_GB)
- A25 Separator LTHW coil ver01cd.FCStd
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- Tube coil 02.jpg (140.56 KiB) Viewed 886 times
- Tube coil 01.jpg (162.07 KiB) Viewed 886 times