Aiming at the axiom of design for manufacture (DFM), this paper describes a recognition method for abstracting compound features from a part model and discloses the basic mechanism of compounding, also builds the cor...Aiming at the axiom of design for manufacture (DFM), this paper describes a recognition method for abstracting compound features from a part model and discloses the basic mechanism of compounding, also builds the corresponding 2D-simulation model. The inner association between feature neighboring and feature compounding is deeply discussed and, based on the essential transforming rule of two neighboring features, the corresponding feature adjacency matrix (FAM) of multi - feature entities are generated. For the manufacturing feature converted from the pure design feature; an innovative concept-homogenous compounding is presented to clarify the architecture of machining domain. Then, the FAM recurrence elimination algorithm is developed to determine all the compound features, and according to machining sequence, outputs a group of machining domains.展开更多
In order to improve the accuracy and efficiency of the measurement of the Shell Case size,a measurement system based on machine vision is introduced.Through the preprocessing,threshold segmentation algorithm and edge ...In order to improve the accuracy and efficiency of the measurement of the Shell Case size,a measurement system based on machine vision is introduced.Through the preprocessing,threshold segmentation algorithm and edge detection of the shell case image.Correlated size measurement of lines and circles in contour using binary search method and Hough transform.The experiment of detecting four sizes of 100 qualified shells shows that the system can realize the rapid and accurate detection of shell casings,and can be used to assess their quality performance.It effectively improves the detection efficiency and further improves the automation level of detection,which has a good application prospect.展开更多
文摘Aiming at the axiom of design for manufacture (DFM), this paper describes a recognition method for abstracting compound features from a part model and discloses the basic mechanism of compounding, also builds the corresponding 2D-simulation model. The inner association between feature neighboring and feature compounding is deeply discussed and, based on the essential transforming rule of two neighboring features, the corresponding feature adjacency matrix (FAM) of multi - feature entities are generated. For the manufacturing feature converted from the pure design feature; an innovative concept-homogenous compounding is presented to clarify the architecture of machining domain. Then, the FAM recurrence elimination algorithm is developed to determine all the compound features, and according to machining sequence, outputs a group of machining domains.
文摘In order to improve the accuracy and efficiency of the measurement of the Shell Case size,a measurement system based on machine vision is introduced.Through the preprocessing,threshold segmentation algorithm and edge detection of the shell case image.Correlated size measurement of lines and circles in contour using binary search method and Hough transform.The experiment of detecting four sizes of 100 qualified shells shows that the system can realize the rapid and accurate detection of shell casings,and can be used to assess their quality performance.It effectively improves the detection efficiency and further improves the automation level of detection,which has a good application prospect.
