# Integrated CAD/CAM Approach for Parametric Design and High Precision Fabrication of Planar Curvilinear Structures

## TL;DR

This paper introduces a new CAD/CAM system for designing and fabricating complex curvilinear V-grooves used in functional surfaces.

## Contribution

A novel integrated CAD/CAM framework for automated design and fabrication of curvilinear V-grooves via diamond cutting.

## Key findings

- The framework includes three main functional blocks and seven secondary modules for end-to-end fabrication.
- Practical validation showed successful fabrication of sinusoidal V-grooves and functional capillary flow testing.

## Abstract

Curvilinear V-grooves are increasingly employed in functional surfaces with applications ranging from fluidics to tribology and optics. Despite their widespread use, the accurate and repeatable fabrication of curvilinear V-grooves remains challenging due to their inherent geometric complexity and the lack of relevant commercial CAD/CAM systems. To address this, the present study proposes a CAD/CAM integrated framework capable of automating the design and fabrication of functional surfaces comprising curvilinear V-grooves generated by multi-axis single-point diamond cutting (SPDC). The framework is organized into three main functional blocks supported by seven secondary modules that encompass the entire process from V-groove geometry definition to cutting. The developed framework was practically validated by fabricating sinusoidal V-grooves on a flat surface and testing the capillary flow functionality of a curvilinear pattern. These results demonstrate the relevance of the integrated framework to curvilinear V-groove fabrication, thereby offering a versatile solution for certain types of surface engineering applications.