Modeling of a milling cutter with radial constructional feed for EC-profile holes machining

Purpose of research. The purpose of the paper is to find new solutions for equiaxial-contour (EC) holes machining and milling cutter modeling with the use of radial constructional feed.

Methods. The results of the determination of the original contour of the milling cutter surface using the basics of the geometric theory are provided in the paper. Theoretical considerations were based on the use of the basics of the vector algebra, analytical and differential geometry, theory of material cutting. The results of the milling cutter design modeling with the application of software COMPAS 3D are presented in the paper.

Results. The analysis of the existing methods for EC holes machining is provided. To improve the efficiency of EC internal surface machining there was proposed a method for milling with a miller cutter with radial constructional feed. The results of the determination of the original cutter surface are provided, the models of its cutting edges and front and flank surfaces were developed. The result of the modeling of the front and flank surface of the cutter teeth with R_f = 24 mm, and cutter width of 50 mm with the front rake angle of 5°, back angle of 10° and 16 teeth are presented. There are also provided the results of the milling cutter modeling by means of 3D modeling which in the future will make it possible to manufacture tool equipment for the proposed method and to conduct an experiment research to determine optimum technological parameters.

Conclusion. On the basis of the developed models it’s becoming possible to perform the modeling of the milling process of EC shaped holes in order to determine milling rational values and specifications. The research findings can  be  used  for  design-engineering   documentation   development   during  the  preparation  of  shaped  holes manufacturing in order to ensure specified item characteristics.

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