Hello, it’s Morio! It’s hot, no, it’s actually scorching!

Thank you so much for the numerous views and comments on my YouTube post, “Synchronized Yaskawa Servo Motors (no break of mechanical pencil leads)”
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We have both the full video and a short version available, but they contain the same content. I’d like to take this moment to give a brief supplementary explanation. The unbroken, rotating pencil lead between two synchronized servo motors, as shown in the video, is genuine HB 0.5 mm lead.

The multi-axis synchronous control system in NC (Numerical Control) machine tools is a critical component for performing advanced precision machining. It involves the collaboration of the CPU, servo drivers, and servo motors. Each of these components plays a unique role while supporting the efficient and accurate operation of the entire system.

1. CPU (Central Processing Unit)
   • Definition and Function: The CPU acts as the “command center” of the machine tool, analyzing programmed machining data and commands, and converting them into appropriate control signals. The accuracy and efficiency of the machine tool’s operations are determined by this CPU processing.
   • Role: In NC machine tools, the CPU coordinates all machine operations based on input from the operator or preset programs (such as G-code). It issues commands to synchronize the motion (amount of movement, timing, speed) of multiple axes and precisely controls each stage of the machining process.
2. Servo Driver (Servopack in Yaskawa Electric products)
   • Definition and Function: The servo driver receives signals from the CPU and converts them into electrical signals (current and voltage) that the servo motors can understand. This device analyzes the input signals and provides precise electrical power to the motors.
   • Role: The main role of the servo driver is to provide accurate speed and torque to the servo motors. This enables the servo motors to achieve very precise positioning and smooth operation, allowing for synchronized multi-axis movements.
3. Servo Motor
   • Definition and Function: The servo motor converts electrical energy into mechanical motion. It is highly responsive and capable of precise position control.
   • Role: Acting as the main actuator for moving each axis, the servo motor performs precise movements and speed, as dictated by the servo driver, to accurately position each machining tool through mechanical parts.

Interrelationship The CPU, servo drivers, and servo motors must function seamlessly together. The CPU issues overall commands, the servo drivers convert these into appropriate electrical outputs, and the servo motors translate these into precise mechanical actions. This highly synchronized process allows for complex and precise machining, significantly enhancing the efficiency and product quality of machine tools.

The number of servo drivers and servo motors controlled, referred to as the number of axes, is two in the case of the video showing the rotation of the pencil lead. The spring manufacturing shown in the posted video is made possible by unifying the different movements of each axis under one control system. Our products can handle more than 20 axes in one machine, making the design and manufacturing of spring machines a fascinating job that intricately blends analog and digital technologies.