Computer simulation of the rotary cutting edges with helical teeth on the 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 feature-based parametric modeling system for CAD/CAPP/CAM integrated system
For shortening the product development time, this paper proposes a feature based parametric product modeling system, called ZD-MCADII, which is suitable for the integrated engineering design in CIM system environment. The architecture of ZD-MCADII and the characteristics of its modules are described in detail. The ZD-MCADII product data is managed by an object-oriented database management system OSCAR, and the product model is built according to the standard STEP. As the product design is established on a unified product model, all product data are globally associated in ZD-MCADII. ZD-MCADII provides various design features to facilitate the product design, and supports the integrity of CAD, CAPP and CAM.
INC: a new philosophy of CNC
This paper proposes a new philosophy of CNC (computer numerical control), which is named as INC (integrated numerical control or intelligent numerical control). First it has a brief introduction of INC and makes a comparison and analysis about INC, ONC and DNC. Further it describes the important characteristics of INC and introduces the key technologies of INC. And then it emphasizes on discussing some intelligent characteristics of INC, which includes image recognition and vector quantization (VQ), intelligent process planning, simulation, etc. It discusses the principle and application of them in details. Finally, a case is given to illustrate how to realize INC in the engineering area.