Micro-drilling on shape memory alloys-A review

Area of Science:

• Materials Science and Engineering
• Mechanical Engineering
• Manufacturing Technology

Background:

• The demand for high-precision micro components drives advancements in micro-hole drilling technology.
• Despite theoretical feasibility, practical micro-drilling faces significant challenges in achieving consistent results.
• Microdrilling is essential for miniaturized components in fields like medicine and robotics.

Purpose of the Study:

• To simulate and analyze the thermal-mechanical interactions during micro-drilling of alloys.
• To provide a comprehensive literature survey on spark methods for micro-hole drilling.
• To identify key process parameters influencing micro-drilling performance and aid in parameter optimization.

Main Methods:

• Finite element analysis (FEA) using Abaqus for micro-drilling simulation.
• Modeling of twist-bit mechanics, material behavior, and chip separation criteria.
• Literature review focused on spark erosion machining and its variations for micro-hole creation.

Main Results:

• The simulation model can identify critical process parameters affecting drilling performance.
• Analysis of thermal-mechanical effects provides insights into alloy behavior during micro-machining.
• The study highlights the potential of spark erosion methods for creating micro-scale holes.

Conclusions:

• Mechanical microdrilling offers a precise and cost-effective alternative to non-conventional methods.
• Optimized machining parameters derived from the model can enhance micro-drilling efficiency.
• This research supports the development of advanced micro-machining techniques for critical applications.