The experience of CAD/CAM systems application in educational process at the basic department of “Aircraft engineering”


DOI: 10.34759/trd-2020-115-15

Аuthors

Chigrinets E. G.*, Rodriges S. B.**, Chotchayeva S. K.***, Sorokin A. V.

Don State Technical University, DSTU, 1, Gagarin square, Rostov-on-Don, 344003, Russia

*e-mail: egchigrinets@gmail.com
**e-mail: sb_rodriguez@mail.com
***e-mail: semo_s@mail.ru

Abstract

Computer engineering gains more and more importance in the modern world due to the 3D solid-state modelling, analysis and simulation integration. In this aggregate of methods and means for the engineering problems solving, the groundbreaking role is being assigned to creation and application of the so-called digital twins, which are based on digital representation of separate real components, products, technologies and processes, allowing performing a wide specter of analysis and virtual simulations. The object location herewith does not matter.

Practical application training of the CAM systems is a weak side of the DSTU (Don State Technical University) compared to the theoretical preparation.

This article demonstrates the application example of the NX computer-aided manufacturing system by Siemens PLM Software in the engineering personnel training for an aircraft-building enterprise.

In the framework of their practical training, the students collected information that has become the initial data for the machining process simulation of the especially critical helicopter parts employing the NX CAM. Managing routines for the five-axis HURON K2X8 FIVE machining center were developed applying the «Machining» module, analysis of various cutting strategies was performed, visualization of the material removal was carried out, and the machine-tool operation simulation was demonstrated

Verification of the developed managing routines allowed revealing overcuts and and rough surfaces on the completed part, collisions of the machining center actuating devices with rigging and workpiece, tools contact during rapid feed, excessive and insufficient machining allowances. The revealed defects were corrected prior to program run on a CNC machine.

The demand for graduates of the engineering specialties are largely determined by the knowledge of modern CAD/CAM system at the technological preparation of production and the ability to employ them. The increased interest of today’s young people in computer technologies raises the interest of the students in the study and improves apprehension of the educational material. However, introduction of computer engineering methods into educational process faces certain difficulties as well. The main one is the insufficiently equipped laboratories of the University. Very often, the such programs implementation is being supported exclusively by the enthusiasm of individual tutors and department staff members.

This publication was prepared based on the cooperation between the department of Aircraft engineering of Don State Technical University and the division of Computer Aided Manufacturing of “Rostvertol Helicopters Co.” within the framework of “The new personnel of the military-industrial complex” project.

Keywords:

CAD/CAM system, NX CAM, Siemens NX, machining, five-axis milling, engineering education

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