5 research outputs found
Force Analysis for single point incremental forming
No full textSingle point incremental forming is a new forming process for small batch production and rapid prototyping of sheet metal parts. The forces induced during single point incremental forming are unknown process parameters the magnitude of which is of importance for the development of process models. The purpose of the current study is to develop a method for predicting forces for complex part geometries based on the measured forces for parts with uniform wall angles. Firstly, a set of experiments, planned applying techniques for design of experiments, was performed with the aim of establishing a relation between the forces and the main process parameters for uniform angle parts. A regression equation of the forces was then obtained in terms of four parameters: the vertical step size between consecutive contours, the diameter of the tool, the wall angle of the part and the thickness of the sheet metal. In a second step, a technique of assembling the force curves obtained from the regression equation was employed to predict the forces for other shapes with varying wall angles.status: publishe
Experimental study on force measurements for single point incremental forming
No full textAn experimental platform capable of measuring forces in process during an incremental forming procedure is described and some of the earliest measurements of forces in incremental forming with the changes induced on the measured load are reported. Using a table type force dynamometer with incremental forming fixture mounted on top, three components of force were measured throughout the forming process. They were found to vary as the parts were made. The reported experimental test program was mainly focused on the influence of four different process parameters on the forming forces: the vertical step size between consecutive contours, the diameter of the tool, the steepness of the parts' wall and the thickness of the sheet metal being formed. The effect of lubrication and the geometry of the test part in the incremental forming process were investigated by a set of initial experiments. Part failure prediction based on the shape of the force curve is explained. For the tested materials, analytical results demonstrating the relationship between the respective process parameters and the induced forces are presented in this paper. © 2007 Elsevier B.V. All rights reserved.status: publishe
Medical application of single point incremental forming: cranial plate manufacturing
No full textSingle Point Incremental Forming (SPIF) is a new sheet metal forming technique that, unlike other forming processes, does not require a dedicated tool set. Because of the absence of a die, SPIF is ideally suited for small batch or tailored production of sheet metal parts. Medical applications typically fit within these categories. The case presented in this paper deals with the production of a cranial plate used in reconstructive skull surgery. The SPIF process is compared to the conventional manufacturing methods. © 2005 Taylor & Francis Group.Book subtitle: ADVANCED RESEARCH IN VIRTUAL AND RAPID PROTOTYPINGstatus: publishe
