Automated feed rate optimization with consideration of angular velocity according to workpiece shape

Abstract

Selecting the proper cutting conditions for milling parts is one of the most important tasks in setting up manufacturing to achieve minimum machining times and to ensure the desired tool life. This is particularly important when machining parts made of difficult-to-cut materials. However, if the required technological conditions are not achieved due to the shape of the toolpath itself, even the conventional setting of the technological conditions will not help achieve the optimum result. It is therefore essential to ensure that the technological conditions are achieved directly at the contact point between the tool and the workpiece, which is often forgotten in automatic toolpath preparation. This paper therefore presents a specific solution for optimizing the feed rate right at the contact point between the workpiece and the tool to maintain a constant feed per tooth. The work contributes to the investigation of the relationship between the tool diameter and the shape of the machined surface when a constant feed per tooth is required as well. The achievement of feed rate is performed by tests on the machine tool and the benefits of using the optimization of feed rate are further discussed.

Keywords

• Feed per tooth
• Optimization
• Angular velocity
• Toolpath
• Pole of motion