What is the impact of tool wear on CNC milling operations?

Tool wear has a significant impact on CNC milling operations, particularly affecting the accuracy of the machined parts and the durability of the tools used. As tools wear down, their ability to maintain tight tolerances diminishes, leading to decreased accuracy in machined components, which can result in parts that do not meet specified dimensions or quality standards. This loss of precision may also cause the tool to exert uneven pressure, which can lead to increased likelihood of tool breakages. The combination of diminished accuracy and a higher rate of tool failures directly affects production efficiency and could lead to greater downtime and increased costs due to replacing tools and finishing parts that require rework.

In contrast, increased tool speed and efficiency, enhanced surface quality, and no effect on machining accuracy do not hold true when considering the detrimental effects of tool wear, further reinforcing why decreased accuracy and increased tool breakages is indeed the correct impact of tool wear in CNC milling operations.