Abstract:
To achieve the rapid prototyping preparation of slotted structured grinding wheels, combined with the advantages of UV curing rapid prototyping and powder bed fusion, a conventional particle size grinding wheel UV curing rapid preparation method based on layer by layer laying of abrasive resin slurry was proposed. The variation law of the solidification thickness of abrasive resin mixed slurry with time was studied. The influences of the single solidification thickness of the abrasive layer on the bonding strength between the abrasive layer and the substrate, as well as the bonding strength between the abrasive layers, were investigated. Based on the principle of light cured rapid prototyping, an experimental platform for preparing light cured resin bonded grinding wheels was established, and slotted grinding wheels and continuous grinding wheels were prepared. Grinding experiments were conducted to test the grinding performance of two types of grinding wheels. The results indicate that the ultimate curing thickness of the mixed slurry is about 6 mm. The bonding strength between abrasive layer and substrate, as well as the bonding strength between the abrasive layers, decreases with the increase of single-layer solidification thickness. When the single-layer solidification thickness is 0.5 mm, the bonding strength between the abrasive layer and the substrate is 7.15 MPa, and the bonding strength between the abrasive layers is 10.43 MPa, which meets the grinding wheel requirements. Under the same grinding conditions, slotted grinding wheels have significant advantages in reducing grinding force, grinding temperature, and improving grinding ratio compared to continuous grinding wheels. However, after grinding, the surface roughness of the workpiece will increase compared to continuous grinding wheels.