What is "cutting speed" in machining?

Cutting speed refers to the speed at which the cutting edge of a tool engages the workpiece material during the machining process. This speed is a critical factor in determining the efficiency of material removal and the quality of the finished workpiece. It influences the rate of production, tool wear, and surface finish. The cutting speed is typically measured in feet per minute (FPM) or meters per minute (MPM) and is directly related to both the tool's rotation and the diameter of the workpiece.

In machining, understanding and calculating the appropriate cutting speed is essential for optimizing performance, ensuring that the tool operates effectively without overheating or wearing out prematurely. The cutting speed is particularly important when selecting the proper tool and optimizing feed rates to achieve the desired results based on the material being machined.

While other choices reference various aspects of machining processes, none accurately define cutting speed as the interaction of the tool's cutting edge with the material. The sharpened tool's speed, workpiece rotation, and machine spindle speed all play roles in the overall machining process but do not represent the specific concept of cutting speed itself.