Study on the additively manufactured porous metal-bonded grinding wheel designed by octahedron lattice structure

The development of additive manufacturing technology makes it possible to fabricate the metal-bonded grinding wheel with big porosity and specific porous structure, which can significantly enhance the anti-clogging and cooling ability. In this paper, octahedron lattice structure is creatively adopted to construct the porous grinding wheel, which is precisely fabricated by additive manufacturing technology. Characterization results prove the excellent bonding strength of diamond abrasives owing to the forming of chemical metallurgical bonding. The grinding performance of lattice wheel, solid wheel, and electroplated wheel is evaluated by BK7 glass grinding experiment. The results indicate that the surface discontinuity of lattice wheel can realize the intermittent grinding, resulting in the largest amplitude fluctuation and the smallest average value of grinding force as well as the largest grinding force ratio. The lattice structure can reduce the specific grinding energy by a large margin without sacrifice of material removal capacity. The additively manufactured wheels are insensitive to the grinding depth and feed rate. In conclusion, the good performance of the additively manufactured lattice structure grinding wheel is proved in this paper.

Automated summary

This paper demonstrates the manufacturing of a porous grinding wheel with octahedron lattice structure using additive manufacturing technology. The lattice structure enables intermittent grinding, reducing specific grinding energy without sacrificing material removal capacity. The additively manufactured wheel is insensitive to grinding depth and feed rate.