SGspringSpiral

by Tim C. Lueth, SG-Lib Toolbox: SolidGeometry 5.6 - Parametric Design
Introduced first in SolidGeometry 5.3, Creation date: 2023-02-28, Last change: 2025-09-15

returns a spiral spring geometry

Description

MAJOR UPDATE IN MAY 2024: For mechanical engineers, it is often easier to test a mechanism with a mechanical motor before a suitable electric motor is used. For this purpose, a spiral is winded up and tensioned via a winch or handwheel. The stored energy can then be transferred to the mechanism via a shaft. In mechatronics, this reduces the complexity for the mechanism designer.

See Also: SGspring , SGfreewheel , SGmotorwindup , CPLspringSpiral

Example Illustration

missing image of SGspringSpiral(r,w,d,h,k,

Syntax

[SG,SGC,SGL,CPLC,CPLX]=SGspringSpiral([r,w,d,h,k,"STL","ccw","CPLu"])

Input Parameter

r: Distance between center and 2nd axis; default is 30
w: number of windings as integer of pi; default is 10 * pi
d: thickness; default is 1.2 mm
h: height; default is 5 mm
k: [wrench-size n-edges diameter n-edges] default is [6.4 4 5 0]
"STL": if used a STL file is written
"ccw": if used for Freewheel and Spring, torque is ccw and windup is cw
"CPLu": if used an optional contour is cut out of the lid (for example shape of SGfreewheel)

Output Parameter

SG: Solid Geometry of the Spring
SGC: SG of a safety cage cover
SGL: SG of a safety cage lid with opening for CPLu
CPLC: Contour of the cage
CPLX: Contour of the shaft bearing and the axis bearing

Examples


SGspringSpiral(20,'',0.8,'',[6.4 6 5 0],'CPLu',PLcircle(10)) % With cage and lid & torque cw
SGspringSpiral(20,'',0.8,'',[6.4 6 5 0]) % without lid
SGspringSpiral(20,'',0.8,'',[6.4 6 5 0],'CPLu',PLcircle(10),'ccw') % With cage and lid & torque ccw

SGspringSpiral('simple'); A=ans; SGrotate(A,'z',pi);B=ans % 2 arm spring coil
SGspringSpiral('simple'); A=ans; SGrotate(A,'z',2*pi/3);B=ans; SGrotate(B,'z',2*pi/3); C=ans; SGplotalpha(A); % 3 arm coil



Copyright 2023-2025 Tim C. Lueth. All rights reserved. The code is the property of Tim C. Lueth and may not be redistributed or modified without explicit written permission. This software may be used free of charge for academic research and teaching purposes only. Commercial use, redistribution, modification, or reverse engineering is strictly prohibited. Access to source code is restricted and granted only under specific agreements. For licensing inquiries or commercial use, please contact: Tim C. Lueth

Last html export of this page out of FM database by TL: 2025-09-21