Machines are becoming more versatile and automated while CAM software for programming maximizes their capabilities as compare to which tooling should also be more multifunctional with broad acceptance of modular tools.
The question of high-pressure coolant usually arises when investment in the latest machine technology is being considered. Now that 1,000-psi coolant delivery is a standard option on most high-tech machines, the question is: What are the considerations and benefits of using high-pressure coolant?
1) With high-pressure cooling, the coolant effectively removes heat generated by the cutting process before it can accumulate and increase temperatures to the point at which tooling and workpiece surfaces are damaged.
2) The high performance levels of modern machine tools generate so much heat that the coolant is heated beyond its boiling point and creates a blanket of vapor that insulates the cutting zone from the coolant. That reduces the coolant’s ability to remove heat. High-pressure, high velocity coolant eliminates the vapor barrier so the heat that is generated is removed effectively at a high rate.
3) Another advantage of high-pressure coolant is that it can penetrate to the tool’s cutting edge to provide a short shear zone that leads to the creation of thin chips that readily break into small pieces over the base material.
4) Broken chips that fall away from the tool and workpiece, or are blown away by the force of the coolant, prevent these chip-related problems.
5) Harnessing the coolant pressure, producing a high-powered controlled jet and delivering the coolant to the correct position on the cutting tool to ensure a consistent performance.
Courtesy : American Machinist