Smooth surface finishing for 5-axis flank CNC machining of free-form geometries using custom-shaped tools

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F25%3A43975629" target="_blank" >RIV/49777513:23520/25:43975629 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.cad.2025.103887" target="_blank" >https://doi.org/10.1016/j.cad.2025.103887</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cad.2025.103887" target="_blank" >10.1016/j.cad.2025.103887</a>

Result language

angličtina

Original language name

Smooth surface finishing for 5-axis flank CNC machining of free-form geometries using custom-shaped tools

Original language description

Geometric modeling is traditionally a key part of an efficient manufacturing pipeline as one can decide, in virtual realm, what specific manufacturing tools to use and how to move them. Flank milling is the finishing stage of 5-axis Computer Numerically Controlled (CNC) machining, a stage where the machining accuracy is equally important as the smooth surface finish of the to-be-manufactured workpiece. The benchmark machining geometries such as propellers or blisks are doubly-curved surfaces and one typically needs several paths of the tool to get highly accurate surface finish. However, navigating a tool to move tangentially (i.e., in flank fashion) to the surface is very restrictive and in order to get highly accurate approximation, one typically has to compromise the smoothness across the neighboring paths.To connect neighboring paths in smooth ($G^1$-continuous) fashion using a conical tool is possible only for reasonably flat target geometries, such as spiral bevel gears, however, for a general free-form surface conical tools do not offer sufficient degrees of freedom. In this work, we consider generally curved, custom-shaped, cutting tools, whose shape is a design parameter computed by the proposed optimization-based framework to adapt their motions globally to the input free-form surface, supporting a feature of $G^1$ connection across the neighboring paths. We demonstrate our algorithm on synthetic free-form surfaces as well as on industrial benchmark datasets, showing that optimizing the shape of the tool offers more flexibility to produce $G^1$ connections between neighboring strips and outperforms conical tools both in terms of the approximation error and the smoothness.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10102 - Applied mathematics

Project

<a href="/en/project/EH23_021%2F0008436" target="_blank" >EH23_021/0008436: RandD of technologies for advanced digitization in the Pilsen metropolitan area (DigiTech)</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Computer-Aided Design

ISSN

0010-4485

e-ISSN

1879-2685

Volume of the periodical

185

Issue of the periodical within the volume

AUG 2025

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

12

Pages from-to

nestránkováno

UT code for WoS article

001484890400001

EID of the result in the Scopus database

2-s2.0-105003874205