At present, most of the research on intelligent CNC machining is limited to the direct measurement of cutting force level, but there are many problems: the bottom area of ​​the machined workpiece is strictly limited by the effective area of ​​the force measuring platform, and the depth of the dynamometer Change is not sensitive and expensive. These defects make the technology difficult to put into practical use. To change the research perspective, the AC servo motor current used in modern CNC machine tools has a certain nonlinear relationship with the cutting load. If a self-organizing fuzzy neural network can be used to establish the strong robust nonlinearity between the two. The relational model is used for indirect measurements, and the problems with the dynamometer can be solved. The modeling experiment uses MIMO self-organizing fuzzy neural network (3×3×15×125×125×3×3), and the total number of nodes of the network is: 3+3+15+125+125+3+3=277; The total connection weight is: 3+15+125×3+125×3+3=771, where: each fuzzy set of the member function layer is divided into five fuzzy subsets (NS, NB, ZE, PS, PB), rules The layer contains C15C15C15=125 nodes. The parameters of the measured current signal and the cutting force signal are respectively, and are scaled and finally normalized. The number of data samples of the network model is 1024×5=5120, and finally the network approximation model can be obtained. (Finish) Pre-insulated Pipe Fabrication
Pre-insulated, pre-fabricated jacketed piping system is used for industrial and commercial applications. Pre-Insulated, pre-jacketed thermal pipe has a definite advantage over field installed insulation and jacketing. All straight sections of the factory preinsulated piping system shall be jacketed with a High Density Polyethylene (HDPE) jacket conforming to ASTM D1248,PVC jackets shall not be allowed.
All field butt joints shall be made in straight sections of pipe.here for welding polyethylene, it can use field hdpe pipe Butt Fusion Machines according to pipe range. For PE Pre-insulated pipe fabrication, It will use workshop fitting machines for bend fabrication of plastics. How it works? Firstly you need to prepare pe pipe Angle Cutting Saw and fix thin pipe on sepcial clamp, and then cut hdpe pre-insulated pipe in required angle. Then move this pipe and fix them on elbow clamps of pre-insulated fitting welding equipment. Special half heating plates positioned on top of the welding zone are used to ensure the required welding temperature, The appication of uniform welding pressure which is controlled hydraulically, ensures the quality of the weld between the sleeve and the pipe casing. The welding phases of pipe fabrication are below: 1. Approaching and preheating 2: Heating 3.Removing the heating element 4. Reaching the welding pressure 5.Welding 6. Cooling
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