Approaches to tailor the cooling supply to the grinding process

Abstract

Abstract This study presents original research of the investigation of the coolant supply to the contact area with two different approaches. The cooling and lubrication are key aspects of manufacturing processes such as grinding to achieve a high surface quality at high productivity. The coolant supply to the contact area has a high impact on the performance of the coolant. This paper presents the results from two approaches to tailoring the coolant supply for conventional and high-performance processes. An analytical approach is established to determine the coolant outlet velocity. Afterward, a sensor is developed to measure the coolant velocity at the nozzle. Conclusively, the influence of the coolant velocity on the volume flow through the contact zone is investigated. The results of this study highlight the importance of coolant outlet velocities of at least 60% of the cutting speed. The two approaches outline low impact possibilities to ensure optimal coolant outlet velocities and thus low thermal loads during the grinding process. Article Highlights Analytical approach to calculate outlet velocities for varying noozles in high-performance grinding with cutting speeds of up to 100 m/s Utilization of a high-speed camera to determine the outlet nozzle velocities in a conventional deep grinding process Validation of the impact of the coolant outlet velocity on the volume flow through the contact area by means of a coolant collection box

Keywords

• Grinding
• Cooling
• CBN
• High-performance grinding
• Circumferential grinding
• Deep grinding