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What feature allows CNC machines to operate unmanned and improve production speed?

  1. Automated tool changers

  2. Manual tool changing

  3. Wider tool access

  4. Low-speed operations

The correct answer is: Automated tool changers

The capability of CNC machines to operate unmanned and enhance production speed is significantly attributed to automated tool changers. This feature allows the machine to automatically switch between different tools as needed for various tasks during the machining process. By automating this function, CNC machines can run continuously without human intervention, thus maximizing efficiency and reducing downtime associated with manual tool changes. This process not only speeds up production but also allows for more complex operations to be performed without the need for constant oversight, leading to increased output and streamlined workflows. In contrast, manual tool changing adds significant downtime as operators need to stop the machine to replace tools, which is not conducive to high-speed production. Wider tool access and low-speed operations do not directly contribute to unattended operation or speed improvements in the same effective manner as automated tool changers do.