Static and Dynamic Analysis of a Deep Hole Internal Grinding Shaft Tool

Abstract

: Cylindrical parts with deep holes and thin-wall structures are the backbone in aerospace, such as sleeves, actuators, and landing gears of aircraft. However, in precise, the precision machining of inner holes of cylindrical parts with small bores, large depth to diameter ratios (>7-8) is more problematic, which realized the significance of the grinding of such deep holes. In this article, an optimized structure of a deep hole internal grinding shaft tool is introduced. The vital structure of this grinding machine is the internal grinding shaft tool structure and one of the decisive factors distressing the surface grinding quality because of the length and complexity of the structure with a limited exterior dimension. First, the modal of the grinding shaft tool structure is designed in CREO-Parametric software. Then the designed modal is carried through the static and dynamic analyses employing ANSYS FEA software to authenticate and assure the structural stiffness and behavior to attain high precision machining of deep holes. In static analysis, various parameters such as materials of internal grinding shaft and various structural designs of the shaft took under research consideration. Next, the dynamic analysis has been performed against the optimized structure. Finally, harmonic analysis is performed to verify the internal grinding shaft tool design. Consequently, quite a few developments have been made in the structure and also provide a motorized spindle to segregate the effects of vibrations and forces on machining quality due to the driving mechanism.