Development of a rotary table : rotate parts by 90 degrees for machining

Abstract

This thesis details the design and development of a precision rotary table for 3-axis CNC machining systems, enabling automated 90 degree part rotation to achieve multi-face machining without manual intervention. Developed in collaboration with Astex Engineering Oy, the solution addresses industrial demands for cost-effective automation by integrating a BT40 tool holder driven indexing mechanism and a pneumatically actuated locking system. Structured around the systematic engineering design methodology of G.Pahl, W.Beitz, J. Feldhusen, K.H. Grote the project emphasizes affordability, repeatability, and rapid integration into existing CNC workflows, prioritizing modularity, ease of maintenance, and resistance to environmental factors such as coolant and vibration.

Key innovations include a mechanical locking mechanism for stability during cutting operations and a spindle driven indexing process that eliminates the need for external actuators. By leveraging standardized components and scenario based requirement analysis, the work demonstrates how conventional 3-axis CNC systems can be extended to enhance productivity and precision, offering enterprises a practical pathway to advanced machining capabilities.