2results about How to "Reduce processing deformation" patented technology

This invention discloses a gas turbine cylinder block machining positioning device, belonging to the field of machining clamping technology. The gas turbine cylinder block includes an outer cylinder, an inner cylinder, a star-shaped support, and a support ring. Multiple height-adjustable support mechanisms include support seats and movable supports. The movable supports are provided with normal positioning parts and tangential positioning parts. The top protection mechanism includes a guide plate, a first variable diameter plate, multiple sector plates, and multiple second positioning parts that can move synchronously radially. The guide plate is provided with multiple first straight grooves and second straight grooves. The first variable diameter plate is provided with multiple first arc-shaped grooves and connected to a second drive assembly. The multiple sector plates are stacked, and the sector plates are provided with first pins that cooperate with the first straight grooves and first arc-shaped grooves and second pins that cooperate with the second straight grooves. This invention uses height-adjustable support mechanisms to position the outer cylinder, resist shear force and axial force, and ensure support rigidity. It also cooperates with the top protection mechanism to make the axes of the support ring, outer cylinder, and inner cylinder collinear.

This invention proposes a method for obtaining optimal machining parameters for cantilever parts based on numerical simulation. The method uses Advantedge FEM software to solve for cutting force and cutting temperature under different machining parameters. The cutting force is then input as a boundary condition into finite element software such as ANSYS Workbench / ABAQUS. Through static strength analysis, modal analysis, and harmonic response analysis, the machining deformation, natural frequencies, and vibration amplitude of the cantilever part under different machining parameters are simulated. By combining the two numerical simulation software programs, accurate prediction of cutting force, cutting temperature, cutting deformation, and part vibration frequency during machining is achieved. Based on the prediction results, the optimal cutting parameters and clamping methods for machining large cantilever parts can be determined, providing guidance for actual production and effectively improving machining quality and efficiency while reducing production costs.