Numerical analysis performance of microbump cutting tool in hot machining Ti-6Al-4V.

In this paper, a micro-bump tool is designed to prepare micro-bumps on the rake face of different tools for cutting titanium alloys. The study found that the micro-bump tool can effectively reduce the tool surface temperature (up to 26.83%) and reduce tool wear (up to 25.2%) due to the presence of bumps that change the contact state between the chip and the tool surface. The only downside is that the cutting force during cutting is higher than with ordinary tools. Aiming at this downside, this paper studies the cutting states (20–600 °C) of three conventional tools and corresponding micro-bump tools at different heat-assisted temperatures by using heat-assisted machining technology. The study found that the application of heat-assisted machining technology can effectively reduce the cutting force of the micro-bump tool, while retaining the advantages of the micro-bump tool, which can reduce temperature and reduce wear at different hot working temperatures. [ABSTRACT FROM AUTHOR]