CAD tool development of end mill parameter design based on DA method
It is given that the problem of computing complexity in end mill design when determines the geometric parameters of end mill, e.g., cutter edge's rake angle and relief angle etc., a method of 3D solid modeling method (called as Direct Analysis, DA) is applied in an end mill CAD package development. The related mathematic formulas of cutter edges are discussed here by which can be used for dynamically creating a 3D cutter with expected geometric parameters by through analyzing end mill geometric parameters, visualizing the process of grinding wheel cutting mill cutter, and then a prototype program for end mill parameter design was developed which it integrates HOOPs 3D display component as supporting module. The main modules' function and relationship of the prototype are discussed as well. It is verified with some historic data that it is feasible to design and chose the optimized parameters during end mill design.
Grinding Wheel Profile Definition for the Manufacture of Drill Flutes
Abstract A purely analytical approach, based on the principles of differential geometry and kinematics, is presented for the solution of the inverse problem for the manufacture of drill flutes. The mathematical relationships established facilitate the determination of the grinding wheel profile for a given radial drill flute cross-section. Examples, generated by an interactive grinding wheel design program, are discussed.
Correlations for mass transfer between fluidized spheres and a liquid
Abstract Data on mass transfer between the solid particles and the liquid in a fluidized bed have been analyzed. After a convenient selection, various correlations have been derived. They show that for a given fluidized system, the Sherwood number is independent on the Reynolds number.