Numerical control machining method for ball polishing wheel

Abstract

The invention provides a machining method for a ball polishing wheel. First, the radius R of an arc to be polish finished is obtained; then a machining coordinate system of a cylindrical polishing wheel is set after the cylindrical polishing wheel and a diamond truer are fixed on a working table, and a machining track of the cylindrical polishing wheel is set; and finally, the cylindrical polishing wheel rotates along with a numerical control system power head spindle and finishes machining of the polishing wheel according to the machining track. The method for machining the ball polishing wheel is simple in operation and easy to achieve, does not need a special device, saves machining cost, simultaneously avoids installing errors caused by another clamping of the polishing wheel, and improves machining precision of the polishing wheel. Due to the numerical control machining method, automatic machining of the polishing wheel is achieved, machining time of the polishing wheel is shortened, polish finish time is shortened accordingly, and efficiency and stability of polish finish are improved.

Description

technical field [0001] The invention relates to the field of mechanical processing of aero-engines, in particular to a processing method of a ball-end polishing wheel. Background technique [0002] When polishing the transition part of the blade body and the edge plate and the transition part of the blisk blade and the hub, it is necessary to use a ball-end polishing wheel. The current method of processing a spherical polishing wheel is mainly to use a special process using a diamond dresser or a special mold. Spherical polishing wheels are time-consuming and labor-intensive to use special processes, and corresponding processing equipment is required, which increases the processing cost; mold processing is used, because the aero-engine blades and overall blisks are made of difficult-to-machine materials such as titanium alloys, the hardness of the polishing wheels is also very high. This leads to serious wear of the mold, and it is difficult to guarantee the accuracy, and it...

AI Technical Summary

Problems solved by technology

[0002] When polishing the transition part of the blade body and the edge plate and the transition part of the blisk blade and the hub, it is necessary to use a ball-end polishing wheel. The current method of processing a spherical polishing wheel is mainly to use a special process using a diamond dresser or a special mold. Spherical polishing wheels are time-consuming and labor-intensive to use special processes, and corresponding processing equipment is required, which increases the processing cost; mold processing is used, because the aero-engine blades and overall blisks are made of difficult-to-machine materials such as titanium alloys, the hardness of the polishing wheels is also very high. This leads to serious wear and tear on the mold, and it is difficult to guarantee the accuracy, and it is necessary to process the mold, which increases the processing cost

The polishing wheels processed by these two methods all need to be reinstalled on the rotating spindle of the CNC machine tool before they can be polished. Influence, when the polishing wheel rotates at high speed, it is difficult to ensure that the spherical polishing wheel meets the accuracy requirements. In addition, the previous processing method is mainly realized by manual work. Although it is also layer cutting, the automation of the processing process has not been realized, and the accuracy and stability are difficult. Guaranteed, in addition, when the polishing wheel is worn and then trimmed, it is necessary to unload the polishing wheel and re-clamp it again, which not only brings back machining errors and installation errors, but also consumes time in the process of loading and unloading the polishing wheel, reducing the cost of the product Processing efficiency, prolonging the production cycle of products

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