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Based on the analysis of the geometry and machining characteristics of aircraft structural parts, and the feature geometry is described with a hierarchical structure. A machining feature recognition method based on neutral file is presented. Firstly, geometry and topology information of CAD model in UG software is obtained from STEP AP203 interface. Secondly, features are extracted from B-rep representation...
Fixed 3-axis milling has been the most popular method for the die and mold fabrication. Determining the optimal cutter length is a time consuming and critical task in process planning, especially for milling deep and complex molds for bumpers, inner panels and lighting components of automobiles. In this paper, the authors propose an inverted offset based method for automatically determining the optimal...
Nowadays, the use of kinematically redundant robotic workcells for machining tasks is increasing. It is due to their capacity to avoid singular configurations, although a choice among a set of possible configurations is required. Experience and knowledge of the workman in charge of the manufacturing process allow carrying out an efficient control of the movement in these cases. However, it is a tedious...
Current CAM (computer aided manufacturing) platforms store the toolpath information as a set of positions and orientations of the milling tool in a cartesian coordinated system defined in the working space, being the most standardized both G code (DIN 66025) and APT code (DIN 66215). These platforms come prepared for the control and postprocessing of up to a maximum of 5-axis trajectories (i.e., three...
By using the flexible sawing and milling machining center for plastic door and window PVC profile (SMMC) as an object, the paper approach for the basic frame, the main function and the key technology of the relevant CAD/CAM integrating system for the SMMC, and specify fully the feature technologies which are applied to the technical design for the SMMC. Through in-depth studying the geometric character,...
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