Method for guaranteeing smoothness of machine tool output power by adjusting machining code feeding speed

Abstract

The invention discloses a method for guaranteeing the smoothness of the machine tool output power by adjusting the machining code feeding speed. The method is designed mainly for the user demands and the technological characters of the aviation field, domestic high-grade numerical control machine tools serve as the study object, analogue simulation is carried out on the machining process through VERICUT software based on given complex structural member machining codes, secondary development is carried out on the VERICUT software, the machining codes are segmented, the feeding speed of the machining codes of various sections is pushed back according to the required cutting power value, the maximum feeding speed and the minimum feeding speed, speed statements of the feeding speeds at different sections are modified, and the smoothness of an output curve of the machine tool main shaft power is kept to the maximum extent. The method overcomes the defect that the VERICUT software cannot simulate the cutting force, the data relation among cutting parameters, the impact effect of limiting factors on the power and the optimal algorithm are found out, and the smoothness of the machine tool output power is guaranteed by adjusting the feeding speed so that safety of the machine tool, workpieces and tools in the cutting process can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a method for adjusting the feed speed of a machining code to ensure smooth output power of a machine tool. Background technique [0002] In the CNC machining process of aircraft structural parts, it is necessary to keep the output power of the machine tool spindle relatively smooth to ensure the safety of the cutting system. However, in a given machining program, the cutting feed rate is relatively fixed. When the amount of material removed by the tool changes instantaneously, the output power of the machine tool spindle may be extremely unstable due to the constant feed rate. It affects the stability of machine tools and cutting tools and affects the service life. [0003] The power of the machine tool spindle is related to parameters such as the spindle speed, feed speed, material removal coefficient, depth of cut, and width of cut. It is very important to reasonably adjust so...

AI Technical Summary

Problems solved by technology

The data sources in the cutting manual are the most extensive, and the organization is generally strong, but the pertinence and accuracy are poor. The data obtained by consulting the cutting manual is very insufficient in terms of the amount of information and the advancement of the method; For application companies, the pertinence is strong, but the data is too scattered and lacks regularity; the data obtained through cutting tests is the most pertinent, but limited by the test conditions and other aspects, the amount of data is extremely limited, and the test conditions and Production site conditions are often quite different

Although the cutting parameters selected according to this method are feasible and have a certain degree of optimization, they often lead to waste of resources and low production efficiency due to non-optimal values.

[0009] (2) The power of the machine tool cannot be directly measured, and it is not easy to adjust in actual production

At the same time, considering that the spindle speed and material removal coefficient cannot be changed arbitrarily during the cutting process, how to adjust the processing code to finally realize the smooth output power of the machine tool spindle remains to be solved

[0011] (3) VERICUT software does not have the simulation function of cutting force

[0012] The geometric simulation function of VERICUT software is very efficient, and it can complete the geometric simulation of the machining process of complex parts within minutes or even tens of seconds, but it does not have the cutting force simulation function

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