VLFLlinkage

by Tim C. Lueth, SG-Lib Toolbox: SolidGeometry 5.6 - Modeling function
Introduced first in SolidGeometry 1.0, Creation date: 2013-04-29, Last change: 2025-09-14

returns a 2½ D solid geometry of a linkage

Description

Tim C. Lueth, Franz Irlinger: "Berechnete Erzeugung von dreidimensionalen Oberflächenmodellen im STL-Format aus der Beschreibung planarer Mechanismen für die Generative Fertigung durch Selektives-Lasersintern [Computational 3D Surface Generation of Planar Mechanismus using STL File Format for Generative Manufacturing by Selective Laser Sintering]", angenommener Beitrag im Konferenzband 10. Kolloquium Getriebetechnik, TU Ilmenau, Sep. 11-13, 2013, pp 1-18.

See Also: VLFLsnapfit , VLFLshaft , VLFLhollowsnapaxle , VLFLcat , TofDPhiH , VLtransT , VLFLspacer , VLFLbolt , VLFLwriteSTL , VLFLofPLELz , VLFLplot

Example Illustration

missing image of VLFLlinkage(RA,RI,H,D)

Syntax

[VL,FL,PL,EL]=VLFLlinkage(RA,RI,H,D)

Input Parameter

RA: Outer Radius
RI: Inner Radius
H: Height
D: Distance in X

Output Parameter

VL: Vertex list
FL: Facet list
PL: Point list of the contour
EL: Contour edge list




Copyright 2013-2025 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

Algorithm (Workflow)

This algorithm generates a 2.5D solid geometry of a linkage based on input parameters. It is designed to create a 3D surface model in STL format for generative manufacturing, specifically for selective laser sintering.

Input Parameters

Output Results

Algorithm Steps

  1. Determine the number of facets n using the function nofrd(RA). Ensure n is even by incrementing if necessary.
  2. Calculate the angular increment dw = 2*pi/n and initialize the angle w = pi/2 - dw/2.
  3. Generate the outer contour points PLA using a loop from 1 to n, updating the angle w and calculating the coordinates with cos(w)*RA and sin(w)*RA.
  4. Adjust the x-coordinates of the second half of PLA by adding D.
  5. Generate the inner contour points PLI similarly to PLA, using RI instead of RA.
  6. Create the edge list ELA for the outer contour and ELI for the inner contour, reversing the order for ELI.
  7. Concatenate the point lists PL and edge lists EL to form the complete contour and edge data.
  8. Call the function VLFLofPLELz(PL,EL,H) to generate the vertex list VL and facet list FL, creating the 2.5D solid geometry.
Algorithm explaination created using ChatGPT on 2025-08-19 08:15. (Please note: No guarantee for the correctness of this explanation)

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