Which factor is crucial for prolonging tool life during CNC operations?

Constant cooling is essential for prolonging tool life during CNC operations because it helps to manage the heat generated during machining. Excessive heat can lead to tool wear, reduce the effectiveness of the cutting edges, and cause premature tool failure. By maintaining a stable and adequate cooling system, the tool temperature can be kept within optimal ranges, which minimizes thermal deformation and wear. This allows for a more extended life span of the cutting tools and improves the overall efficiency of machining processes.

In contrast, high feed rates can increase the load on the cutting tools and generate more heat, potentially leading to faster wear. Frequent changes in cutting tools can disrupt workflow and may not necessarily contribute to longevity if the tools are not adequately cooled or maintained. Inconsistent speed settings can lead to varying levels of heat generation, further contributing to rapid tool wear and decreased performance. Therefore, consistent and effective cooling is a key factor in enhancing tool longevity in CNC machining.