CAD for Die-Casting. An Algorithm For computer-Aided Ejector Design

Research Paper (postgraduate) from the year 2020 in the subject Engineering - Mechanical Engineering, grade: 5.0, , language: English, abstract: The ejector system design is one of the crucial activities of die-design for die-casting dies. It involves determination of the ejection area, area of ejecting pins, no. of ejector pins and at last placement of ejector pins. Traditionally, a die-casting engineer uses his knowledge and experience along with information like part design, no. of cavities, gating system and process parameters to determine ejection system parameters for a die-casting part. The part CAD model parameters are then used to model the ejection system for the die-casting part. Thereafter, the ejection system design for the die-casting part is tested using ejection simulations. The necessary modifications in the ejection system design are made till the desired results are obtained. This makes the process iterative and time-consuming. This paper presents an algorithm that would help in automatic design of the ejector system. The proposed algorithm is able to calculate the ejecting area, area of ejection pins, number of ejection pins and placement of ejection pins on the part. To demonstrate the capabilities of the proposed algorithm we have to determine the parameters the parameters of case study using the MATLAB 7.0. The result from the case study is quite encouraging and is in-line with the best industry practice.