08 - Manufacturing and Supply Chain Management
THERMAL AND GRINDING PERFORMANCE OF 3D PRINTED COMPLIANCE GRINDING TOOLS WITH ROTARY-ENHANCED HEAT TRANSFER STRUCTURE
M.C. Li, China; S. Yan, China; K.F. Zhang, China; W. Wang, China; L. Zou, China; Y. Huang, China
Compliance ball-head (BE) grinding tools show promise for precision grinding of complex curved components in narrow areas, represented by integral discs. However, the grinding process generates significant heat in the grinding zone, which can limit the tool's service life and performance. To address this issue, a rotary-enhanced heat transfer (RHET) structure based on turbine blade was designed in this study. Numerical simulations were used to demonstrate the heat transfer mechanism of the tool. The tools were structured using multi jet fusion and their grinding performance was compared to conventional structures through robot-assisted grinding of titanium plates. The results indicated that the REHT improved the heat transfer capability of the BE by introducing high momentum fluids and increasing the pressure at the inner wall. The REHT structure resulted in a reduction of the grinding temperature by over 19.84%, leading to a tool life extension of more than 40%. Furthermore, compliant grinding tools with REHT resulted in a higher cumulative material removal alongside lower and more consistent surface roughness (Ra).