The Optimal Layout And Processing Research Of Stone Bridge Cutting Machine

Stone bridge cutting machine is one of the most widely used stone processing equipment in processing the stone building materials. At present, stone bridge cutting machine has reached a high level of automation and system integration in abroad and can achieve automatically layout and cutting-- this makes the stone utilization rate and process efficiency be greatly improved. The domestic stone processing equipment stays in the artificial layout and cutting state and has a lot of gaps compared with abroad. In order to promote the level of automation and system integration of the domestic stone bridge cutting machine, the automatic stone bridge cutting machine is studied in this paper by using the machine vision technology, optimization algorithm technology, cutting path optimization technology etc. And the main research contents can be summarized as follows:(1)In order to realize the automatic measurement of the stone slab, the vision detection technology of stone slab is proposed. The image information of stone slab is acquired through CCD camera. The noise of the image is removed by using image filtering denoising technology. And then the pixel coordinates data of edge contour of stone slab is obtained by using the improved Sobel operator and mathematical morphology method. Finally the mathematical model of coordinate conversion is established. The internal and external parameters of CCD camera are obtained by using camera calibration technique. Thus, the visual detection of stone slab is realized, the measuring accuracy and measuring efficiency of stone slab is improved and the labor intensity of workers is effectively reduced through this technology.(2)The boundary of stone slab is usually irregular, and all the layout optimization methods can only be applied to rectangular boundary at present. In order to realize the automatic layout of bridge cutting machine, the maximum enclosed rectangle of irregular closed graph should be solved firstly and the optimal mathematical model of maximum enclosed rectangle is established. The solution method of irregular graphics’ maximum enclosed rectangle is proposed based on the improved genetic algorithm. The research shows that the method can rapidly and accurately determine the maximum enclosed rectangle of irregular graphics. Thus, it can be widely applied in engineering practice, such as target feature extraction, layout optimization, leather cutting etc.(3)In order to realize automatic sample processing on the bridge cutting machine, the automatic layout technology of rectangular engineering board need to be achieved. Rectangular engineering board layout problem is the most common problem encountered in stone layout process so as to establish the rectangular engineering board single layout mathematical model. The optimization method of rectangular engineering board single layout problem is proposed based on dynamic programming algorithm. The research shows that the method can rapidly and efficiently complete rectangular engineering board single layout problem, which can meet the demand of the engineering board single layout in stone industry.(4)In order to realize automatic processing on the bridge cutting machine, the communication system among the mechanical structure of the whole stone bridge cutting machine, the machining track of engineering board and the motion control is studied. In order to realize the processing automation, the partial automation transformation is proposed based on the mechanical structure of traditional stone bridge cutting machine. The machining track of engineering board is optimized designed according to the stone processing technology requirements. And the communication system design between the motion control is finally completed so as that the design of whole bridge cutting machine is completed.The stone slab automatic processing is implemented in the stone bridge cutting machine through the study of above contents. The visual detection, automatic optimum layout and automatic cutting on stone slab in stone bridge cutting machine is realized through automating transformation of the traditional bridge cutting machine, the vision measurement technology of stone slab and maximum enclosed rectangle solving technology. This solves the problem the stone bridge cutting machine can’t automatically achieve optimized layout and cutting of the stone slab in domestic stone enterprises. The production efficiency and economic benefit is improved through this technology. At the same time, it has important significance for utilization of mine resources, energy saving and emission reduction.