The Forming Theory and Computer Simulation of the Rotary Cutting Tools with Helical Teeth and Complex Surfaces
This paper researched the forming theory of the cutting tools with helical teeth and complex surfaces. Deduced the nonlinear equations of the movement of NC system to generate such tools, presented the way to find the solution of the equations, calculated the cross section graphics of the teeth profile and computer simulation of NC machining.
A study on a virtual manufacturing model of a revolving milling cutter in 2-axis numerical control processing
Abstract This paper introduces the same and different points of relative problems in virtually manufacturing a revolving milling cutters that are under two different definitions: equal helix lead cutting edge and equal helix angle cutting edge. The relative problems include the design of the cutting edge curves, the design of the groove and the grinding wheel, the design of the feed speed in 2-axis NC processing, the actual groove curved surface, computer simulation, post-processing, etc. It also gives corresponding common mathematical models and some examples. Finally, some useful conclusions are drawn.
Iustitia Dei: A History of the Christian Doctrine of Justification
Preface Acknowledgements 1. Prolegomena 2. The fountainhead: Augustine of Hippo 3. The development of the doctrine in the medieval period 4. The medieval schools of thought on justification 5. The transition from the medieval to the modern period 6. The development of the doctrine in the Reformation period 7. The Tridentine decree of justification 8. The legacy of the English Reformation 9. The modern period Appendix: a glossary of medieval soteriological terms Abbreviations Notes Bibliography Index.