Abstract
Computer simulation technology in today's world as one of the leading edge of science, has been extensive and in-depth development and a wide range of applications. Modern Manufacturing Technology in the expansion of the traditional simulation technology of simulation technology has been applied to product design, production, testing, maintenance of the entire product life cycle. Parametric product model is modified and variant design needs, the realization of parametric design system is the core issue in structural design of the object model parameters and to establish the parameters of the driving mechanism. Pro / E is a CAD / CAM / CAE in the large-scale integrated design software. The use of Pro / E, not only to parts modeling, assembly modeling, motion simulation can also be used for finite element analysis and so on.
CPM (continuous passive motion) is a new biological concept in the medical use of its design principle a variety of medical devices. Graduated from the joint design of rehabilitation of lower limb CPM device as an example, in-depth study of the characteristics of slider-crank mechanism. First of all, the use of Pro / E software for the slider-crank mechanism to carry out three-dimensional modeling, and then use its dynamic motion simulation module to simulate the movement of slider-crank mechanism process and dynamics have a curve, then the finite element module of the various parts of the body to carry out mechanical analysis. Through the simulation, given the rehabilitation device "optimize" the structure of the design parameters, in accordance with the person's lower extremities to the bar imposed by the weight load, dynamic analysis, calculation of the slider at different positions of the driving force required for the final adjustment of the bar cross-section the shape of the finite element analysis, multi-program comparison, the choice of suitable shape and size to meet the requirements for the provision of support material.
The results of this study on the future rehabilitation of lower extremity joint design practice a certain guiding function can be used as a direction for future research.
Keywords: Slider-crank;Motion Simulation;Finite Element Analysis;Three-dimensional modeling;Lower limb rehabilitation device