Experimental Optimization of Process Parameters in CuNi18Zn20 Micromachining.

Area of Science:

• Manufacturing Engineering
• Materials Science
• Precision Engineering

Background:

• Ultraprecision micromachining fabricates complex 3D microstructures crucial for electronics, biomedicine, optics, and watchmaking.
• Increasing miniaturization and functional integration demand higher precision and tighter tolerances in micro-manufacturing.
• Achieving superior surface finish and dimensional accuracy is vital for high-performance micro-components.

Purpose of the Study:

• To optimize micromachining process parameters for enhanced efficiency and effectiveness.
• To investigate the correlation between cutting parameters and the quality of machined microfeatures.
• To reduce post-machining costs and meet stringent quality standards in high-end horology.

Main Methods:

• An experimental factorial plan was employed to vary cutting speed, feed rate, and depth of cut.
• The study focused on manufacturing main-plates and bridges for wristwatch movements.
• Evaluated dimensions, geometry, and surface finishing of micro-holes, pins, and pockets.

Main Results:

• Identified specific correlations between micromachining parameters and feature quality.
• Demonstrated that optimized parameters lead to conformity with technical specifications.
• Achieved excellent surface finishing and high precision in manufactured wristwatch components.

Conclusions:

• Parameter optimization is crucial for achieving high precision and surface finishing in micromachining.
• The presented technique enables cost-effective manufacturing of high-quality micro-components.
• Successful application in horology validates the method for meeting strict industrial requirements.