Two-sided synchronous high-efficiency milling and casting machine tool for impeller vane

Abstract

The invention relates to a grinding and polishing machine tool of synchronous double-faced blade with a high efficiency, belonging to the mechanical manufacturing field. A moving mechanism in Y direction and two moving mechanism in X direction are fixed on the bed, two moving mechanism in X direction are coaxial and are distributed in symmetrically horizontally vertical to the moving mechanism in Y direction; two grinding and polishing tool system of sand belt variable gear trains are respectively connected with two moving mechanism in Z direction; the two moving mechanism in Z direction are respectively connected with two upright columns; the two upright columns are respectively connected with the two moving mechanism in X direction; a reversing jig is arranged on the rotary worktable, and the reversing jig can achieve the clamping of the blade and the rotation of the blade around the central shaft B of the reversing jig; the rotary worktable is connected with the moving mechanism in Y direction, and the rotary worktable provides the rotation around the central shaft C. The grinding and polishing machine tool of synchronous double-faced blade with a high efficiency has the advantages that the faces of the blade at double sides has synchronous grinding and polishing, not only the efficiency of grinding and polishing is improved obviously, but also because force is exposed on double sides of the blade during grinding and polishing process, the process deformation of the blade is effectively avoided.

Description

Technical field [0001] The invention belongs to the field of mechanical manufacturing. Background technique [0002] Blades are typical key parts of steam turbines, water turbines, aero engines, aerospace propulsion systems, and high-speed ship propulsion systems. Taking steam turbines as an example, the number of blades in a steam turbine is often as many as several thousand. On the one hand, the structural design of the blades is very complicated, which affects the aerodynamic performance of the flow part. On the other hand, the steam turbine blades work at high temperature, high pressure, and huge centrifugal force for a long time. In the harsh environment of steam power, corrosion, vibration, and water droplet erosion, any defects in design and manufacturing may lead to reduced work efficiency, and even damage to the entire unit, resulting in significant economic losses. The design, manufacturing level and manufacturing quality of the blade profile directly affect the perform...

AI Technical Summary

Problems solved by technology

[0007] To sum up, on the one hand, existing blade processing equipment generally adopts a single tool head, and can only adopt a sequential processing mode for both sides of the blade, that is, only one side of the blade can be processed at a certain time

On the other hand, the shape of the blade has been characterized by bending, wideness, twisting, and thinness in recent years. As a thin-walled part, if the blade is subjected to excessive cutting force on one side during processing, it will inevitably produce large deformation, and there are also Flutter may occur, which inevitably leads to a reduction in blade machining accuracy

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