Development and Application of Bit Force Balance Verification Software

To reduce uncertainties in bit design and improvement effectiveness， while also lowering workload of designer and enhancing design efficiency of bit， a bit force balance verification software was developed using NXOPEN and UFun mixed programming techniques. Using the area， arc length and volume measurement functions built in UG to replace complex trajectory equation calculations， and integrating the special-shaped cutter replacement function， this software significantly reduced the computational complexity in the process of bit force balance verification， and effectively solved the problem of slow drawing speed in the design of special-shaped cutter bit. Two bits with different core lifespans were designed for different thicknesses of glutenite， and both they demonstrated excellent performance under applicable conditions. Through numerical comparison and analysis of cutting force and cutting volume at core location during bit design， the reasons for the difference in bit life were well explained. The application effect of the two bits verified the design process determinacy of the software and the necessity of the software development. The research results provide reference for the design of bit.