Vector approach in modeling the accuracy of body parts holes manufacturing in aspect of the additive technologies application

Abstract

The article deals with the issues of ensuring the specified accuracy in the processing of the coaxial and intersecting body parts holes. Features of a details design this type body parts are considered. Parametric analysis was performed, and the key parameters affecting the accuracy of machining body parts internal holes were identified. It is offered at development of details production technology to use in the course of technological parameters system calculation of the vector equations which solution is the only combination of technological parameters of processing of body parts holes. The geometric parameters that determine the position of the basing holes in space are determined. In the vector form shows the influence of the location errors of the base holes and the intersecting and coaxial body parts holes during processing. A spatial calculation scheme for determining the error of the arrangement of the group of coaxial holes of the body part is presented. The work compares results of simulation of the processing errors of the body type parts holes of the for standard cycles for machining holes with the simulation results of the error processing errors of the body type parts holes of manufacturing processes based with additive technologies. It is established a significant impact on the accuracy of the holes location the rotation of details in the working area of the machine, as well as its reinstallation. The efficiency of application of hybrid technological cycles based on additive technologies in the production of coaxial holes in the body type parts is shown.