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In the zero return operation of CNC engraving machine, the limit switch plays a very important role. The zero return operation is to ensure that the engraving machine can accurately return to the initial position in order to start the next processing task. The limit switch mainly has the following functions in this process:
Determine the return-to-zero position: CNC engraving machines are usually equipped with mechanical limit switches to determine the position of the return-to-zero point. When the mechanical component contacts the limit switch, the limit switch will send a signal indicating that the current position of the control system has reached the set zero point.
Brake stop: During the zero return operation, the limit switch can control the movement of mechanical components, and trigger the brake stop mechanism when it contacts the limit switch to ensure that the mechanical components can accurately stop at the zero return position.
Prevent collisions: During the zero return operation, the CNC engraving machine needs to move mechanical parts. Without the protection of the limit switch, the mechanical parts may exceed the set movement range and collide with the workbench or other components, causing damage to the equipment. The limit switch can detect the signal of the mechanical component contacting the limit switch in time, so that the control system can stop the movement of the mechanical component in time to prevent collision.
In short, the limit switch plays a key role in protecting the mechanical equipment, determining the zero return position and preventing collisions during the zero return operation of the CNC engraving machine, ensuring that the CNC engraving machine can accurately return to the initial position and preparing for subsequent processing tasks.
