Since the numerical control exhibition is electrolytic machining for the processing of complex profiles represented by the integral impeller blade profile, the calculation of the cathode motion trajectory is quite complicated. If manual programming is used, the workload is very large. Therefore, it is necessary to use computer-aided programming. . To this end, according to the requirements of CNC electroforming, VC4.0++ was used to develop the computer-aided programming software NCECM for Windows95 running in the Windows95 environment.
in conclusion:
(1) It is feasible to fit the list surface with the ruled surface and use the linear edge cathode to numerically develop the integrated impeller.
(2) The analytical expression obtained from the analysis of the rigid body motion has nothing to do with the shape of the cathode, so it is suitable for various forms of the cathode.
(3) Deriving any point D is the center point of the cathode edge forming during the machining process, which can ensure the minimum rate of change of the forming points of the cathode during the machining process, so as to ensure the processing precision of the whole blade, thereby ensuring the high of the area. Precision.
(4) If the D point in the machining is always in the area where the blade precision is high, it can be ensured that the forming point in the area has the smallest rate of change of speed.
(5) The reference axis is the axis with the smallest normal angle to the D-point profile, which can vary with the progress of the machining.
(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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