Method for grinding interference-free periphery of curve surface of vane

Abstract

The invention discloses a method for grinding an interference-free periphery of a curve surface of a vane. Four-axle-linked grinding equipment and a grinding wheel peripheral arc structure are adopted. The method comprises the following steps of: 1) clamping in a mode that an axis of the vane is along a Z-axis direction; 2) setting an initial swing angle alpha for an axle A; 3) determining a normal grinding radius of a point to be processed; 4) determining a rotation angle beta of a workbench along an axle B; 5) determining a grinding contact point fitting with the vane on the surface of a grinding wheel; 6) linking an axle X, an axle Y, an axle Z and the axle B; and 7) repeating the process, and forming a continuous grinding track to complete the overall grinding. The method has the characteristics of high processing precision and high production efficiency, and is suitable for grinding various materials which are difficult to process and various curve surfaces of vanes without curvature mutations.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a non-interference peripheral grinding method for a curved surface of a blade. Background technique [0002] The special surface shape of the blade determines its complex processing technology. There are many kinds of processes to choose from for the processing of blades according to the processing conditions. At present, it is a common method to process blades with multi-axis linkage machining centers. Due to the limitation of the cutting tool, the work efficiency of this method is very low for blades of difficult-to-machine materials; another processing technology is CNC abrasive belt grinding, but the abrasive belt grinding process in my country is still in the development stage, and its disadvantages are as follows: : The cutting line speed is low, the service life of the abrasive belt is short (about 2 to 4 hours, and it cannot be used after 1 hour), the vari...

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Problems solved by technology

Due to the limitation of the cutting tool, the work efficiency of this method is very low for blades of difficult-to-machine materials; another processing technology is CNC abrasive belt grinding, but the abrasive belt grinding process in my country is still in the development stage, and its disadvantages are as follows: : The cutting line speed is low, the service life of the abrasive belt is short (about 2 to 4 hours, and it cannot be used after 1 hour), the varieties and specifications are not complete, and the shape and precision of the processing are limited due to the elasticity of the abrasive belt (at present, the abrasive belt grinding machine in my country Cutting accuracy is 20~10μm), etc.

However, the efficiency of this processing method cannot meet the processing requirements of technological development for blades, and the use of peripheral grinding with grinding wheels has the problem of grinding interference

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