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360 ° rotating cylinder double helix Vice vane structure compared to the rack and pinion swing cylinder and swing cylinder , compared with a small volume, high precision turning , light weight and high efficiency. In engineering machinery, construction machinery, mining machinery has broad application prospects. However, only the United States Helac , Germany HKS companies, few companies can produce . Under such conditions, the 360 ° rotating cylinder double helix Vice studied in order to achieve its localization is inevitable. The main content of the work : from the mechanism of the rotating cylinder helical surface complex laminar flow analysis. The basic use of computational fluid dynamics theory, hydraulic oil flowing Soildworks-Gambit-fluent numerical simulation model, given realistic initial and boundary conditions , access to the hydraulic oil in the cylinder with the friction between the screw vice constitutive parameters and pressure , variation of the piston speed , and thus obtain the transmission efficiency ; according to the energy equation, continuity equation , NS equations , the establishment within the annular gap leakage of hydraulic fluid mathematical model . On this basis, the use of fluent software for numerical simulation to explore its actual conditions, the spiral flow cylinder internal clearance flow characteristics , internal leakage law . In order to optimize the structure parameters of the cylinder , a reasonable choice of manufacturing precision and reduce internal leakage and improve the volumetric efficiency provide a theoretical basis . Build a bench, on the 360-degree rotating cylinder double helix Vice experiment comparing experimental and theoretical efficiency curve efficiency curve and found fewer errors , indicating efficiency formula believable.
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