This diploma thesis is focused on a CNC turning operation of form parts made of stainless steels. The first part of the diploma thesis is focused on a theoretical analysis of stainless steels material characteristics. The second part is focused on a concept of experiment of complex form experimental stainless steel components. In this thesis the new CNC technology is defined in a new operation system Sinumerik 840D/ShopTurn V06.04 with an application for a new multi-purpose turning centre SP280SY. The final part comprehends technical documentation, CNC programs of shaped components, their verification and overall photographic documentation.

Manufacturing operations generate revenue by adding value to material through machine work and the cost associated with part production hinders the maximum profit available. In order to remain competitive, companies invest in research to maximize profit and reduce waste of manufacturing operations. This results in cheaper products for the customer without sacrificing quality. The purpose of this research was to identify machine settings of an Okuma LC 40 Turning Center and optimize the cost of machining in terms of tool cost and energy consumption while maintaining part quality at a productive cycle time. Studying the relationship between energy consumption, tool life, and cycle time with the speed and feed settings through statistical Analysis of Variance (ANOVA) method will allow the production plant to make profitable financial decisions concerning simultaneous turning operation of forged chrome-alloy steel. The project was divided into three phases; the first phase began with a literature survey of sensors used in current manufacturing research and the adaptation of our sensors to the Okuma LC 40 turning center. Then, phase II used design of experiments to identify spindle speed and feedrate settings that optimize multiple responses related to the turning process. The result was a saving in energy consumption (kWh) by 11.8%, a saving in cutting time by 13.2% for a total cost reduction from $1.15 per tool pass to $1.075 per tool pass. Furthermore, this work provides the foundation for phase III to develop an intelligent monitoring system to provide real-time information about the state of the machine and tool. For a monitoring system to be implemented in production, it should utilize cost effective sensors and be nonintrusive to the cutting operation

The aim of this master thesis is construction a small CNC lathe ideal for small series of mostly minor workpieces or for learning needs. In the first part of the work is carried out general literature search containing turning technology, tools for turning and the allocation of turning machines. There is also retrieval of small lathes located not only in our market. Based on research are selected technical parameters of the machine and carried out construction calculations. Also included is a 3D model of the entire assembly and assembly drawings of machine nodes.

This thesis deals with design of CNC lathe milling head with B axis. Thesis includes research in CNC turning machines, their tool systems and overview of manufacturers of milling B axis. It also includes calculation of machining forces, design of spindle and design of B axis including necessary calculations. Part of this thesis is also 3D model and assembly drawing, 2 manufacturing drawings and list of items.