CAPACITY ANALYSIS OF WORKPIECE BENDING VIBRATIONS EFFECT ON SELF-EXCITATION UNDER DEEP-HOLE DRILLING OF LOW-RIGID PARTS MADE OF HETEROGENEOUS MATERIAL

• Main Authors: Alexander Dmitriyevich Lukyanov, Tatyana Sergeyevna Onoyko, Pavel Pavlovich Vereshchetin
• Format: Article
• Language: Russian
• Published: Don State Technical University 2014-03-01
• Series: Advanced Engineering Research
• Subjects: deep - hole drilling; modeling; dynamics; finite element method (fem); stiffness matrix; he t erogeneous materials
• Online Access: https://www.vestnik-donstu.ru/jour/article/view/299

A production facility model to be used und er the deep - hole drilling of large - diameter tube plates with a heterogen eous structure made of hard - to - machine materials is presented. Dynamic properties of the object as a composite membrane with several anchorage points are analyzed. Modes of the workpie ce vibrations with account for its i nternal heterogeneous structural features are defined. The object structure transformation in the cou rse of pr ocessing (the formation of a large number of holes) effects on its elastic and dynamic properties. Su ch effect fe atures are considered. To simplify the practical application of the model, some recommendations for t he global stif fness matrix transformation, and the production facility dissipation to the local points correspondin g to the applic ation places under the hole making are given. The research results are focused on the creation of an automatic co ntrol system for the deep - hole drilling of hard - to - machine and heterogeneous materials.