Parametric Modeling of Machine Tools for Designers

Abstract

The monograph deals with the problems of machine tools computer-aided design based on the methods and means of parameterization for the main components of metalcutting machune and equipment in the CAD "APM WinMachine" environment. The models and algorithms of parametric modeling for the configurations of machine tools lathe and milling groups of by criteria of maximum rigidity and minimum reduced load on the front spindle support are developed. The express procedure for generating the transverse layout of the main drive in the multivariate design mode has been implemented. The parametric models of the gear boxes basic elements -V-belt-, poly-Vbelt and toothed belt transmission pulleys, as well as the stepped shafts of the machine drives are built. Analytical forms for the construction of the main functional elements of the projected machine parts are proposed. Parametric models of instrumental equipment for machine tool systems on the examples of shaped lathe cutters and gear milling cutters are developed. The models of involute and teeth shaped profiles for disk and worm gearcutting mills in a parametric form are generated. The efficiency of using the parameterization apparatus in multivariate design problems is substantiated. Particular attention is paid to the use of the APM WinMachine parametrizator in the tasks of production design preparation.For leading designers, experts in the field of computer-aided design of machines and tools, scientists, lecturers, graduate students and students.

Оцінка динамічних характеристик шпиндельного вузла багатоцільового токарного верстата в середовищі «АРМ WinMachine»

“…Оцінка динамічної якості функціонування пов'язана з визначенням власних частот і відповідних їм власних форм коливань. Розрахунок цих динамічних характеристик проведено в модулі АРМ Stucture 3D [27,28]. За замовчуванням система розрахувала 16 власних частот і форм з точністю 0.01%.…”

Machine Tool Spindle Dynamics for Designers

“…Design scheme In the general case, this design scheme should be considered as a statically indeterminate beam on four supports (bearing-support), which in the general case have linear A and angular compliance α (Figure 4.6). To reduce the labor intensity, it is sufficient to correctly replace the double bearings with one support, passing to a two-support design scheme [73,74].…”

Parametric Modeling of Machine Tools

“…In turn, the position of the output shaft in the optimal layout also depends on the position of the resultant cutting force R. Thus, for the range of milling and multioperational machine in the cutting process, tangential P z and radial P y components of cutting forces R arise [13][14][15].…”

“…The many options for the SB parts design their mutual arrangement, on the one hand, as well as the need to increase the productivity of the designer, on the other, make it possible to use a parametric modeling apparatus. It is this mechanism that allows reducing the development time of a new or modification of known structures, implemented in all modern CAD systems [15][16][17].…”