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Now, Dr. Philip V. Barry of the University of Washington in St. Louis and his research team have developed a software based on a technique called Time Finite Element Analysis (TFEA) that can analyze and predict when flutter will occur and The accuracy of cutting.
The software can be applied to high-speed machining of aluminum alloys, titanium aerospace parts and medical devices. Before the milling process, the TFEA simulation analysis was performed using the processing system model in the computer to predict the favorable and unfavorable cutting speed for the stability and accuracy of the cutting process. By optimizing the machining process and avoiding chatter, the cutting speed can be increased, the tool life can be extended, and the workpiece quality can be improved.
Dr. Barry said, “TFEA analysis technology can help to obtain accurate machining processes and can play a big role in producing higher quality parts at lower cost. Simply changing the cutting speed of the tool according to the prediction results can It greatly improves the stability and accuracy of the process.†Dr. Barry and his colleagues have applied for a patent on the concept of using TFEA technology to design the processing technology. Due to the rapid analysis and calculation of the processing process, the software is expected to be widely used in the manufacture of aerospace, automotive parts and medical devices.
Using Software to Eliminate Tool Flutter in High Speed ​​Cutting
In milling, flutter is a kind of machining instability caused by tool vibration. It leaves flutter marks on the surface of the workpiece. When the tool passes through these marks again, it will cause more vibration. This creates deeper tool marks on the workpiece surface. Such a vicious cycle will eventually result in damage to the tool or workpiece.