1. About VEIKONG Brand Strength
As a reputable high-tech enterprise, VEIKONG focuses on the research, manufacturing and system solution supply of medium and low voltage inverters and spindle servo drives. Boasting a professional R&D team and over 12 years of industry management experience, VEIKONG ranks among the earliest independent AC drive brands in China. By adopting advanced SPWM, sensorless vector and torque control technologies, our products reach international advanced standards and can fully replace European, American and Japanese brands. Strictly following ISO9001 quality management and certified by CE and IEC, VEIKONG consistently delivers reliable, cost-effective drive products for global industrial applications.
2. The Importance of Full Closed-loop Control in CNC Machining
Full closed-loop control has become an indispensable core technology in high-end CNC machining, directly determining machine running stability, workpiece dimensional consistency and long-term processing accuracy. Many users only focus on spindle speed and power, but ignore the decisive role of closed-loop mode in eliminating mechanical errors. Understanding how full closed-loop control works helps machine manufacturers and end users optimize equipment configuration and avoid precision attenuation during long-term operation.
3. Working Principle of Full Closed-loop Control
Different from conventional semi-closed-loop control that only collects feedback signals from the motor end, full closed-loop control adds an independent spindle encoder for real-time position detection. It forms a double feedback loop covering the motor side and the mechanical spindle side. The drive continuously compares the command position with the actual spindle position, dynamically compensating deviation values in real time. This working principle can effectively offset inherent mechanical errors, including transmission gear clearance, lead screw deformation, belt slip and structural aging deflection. These subtle errors cannot be eliminated by semi-closed loop alone and will directly affect finished workpiece quality in precision machining.
4. Application Value of Full Closed-loop Under Complex Working Conditions
In actual CNC workshop operation, machine tools face complex working conditions such as heavy cutting impact, long-time continuous operation and temperature rise deformation. Without full closed-loop correction, positioning deviation will gradually accumulate, resulting in poor repeatability, unqualified dimensional tolerance and obvious surface pattern marks. Full closed-loop control suppresses such error accumulation all the time, maintaining stable positioning accuracy even under variable load and temperature changing environments. It is particularly suitable for machining centers, CNC boring machines, gantry machine tools and high-precision lathes that require long-term batch production.
5. VEIKONG S6 Perfectly Matches Full Closed-loop Control Demand
Tailored for high-precision CNC scenarios, VEIKONG S6 Series Spindle-specific Servo Drive perfectly empowers full closed-loop control. It supports both semi-closed and full closed-loop position control, achieving positioning accuracy up to ±1 pulse. Compatible with TTL differential, Tamagawa absolute, SinCos, SSI and BISS protocols, S6 allows arbitrary encoder frequency division output. The separated motor and spindle encoder interfaces simplify wiring and maintenance, while strong anti-electromagnetic interference avoids pulse loss and ensures feedback stability.
6. Core Performance Advantages of VEIKONG S6 Servo Drive
With powerful motor self-learning, 150% overload for 60 seconds and 200% instantaneous overload capacity, VEIKONG S6 maintains precise position locking under sudden heavy cutting. It offers analog pulse, EtherCAT and M3 bus interfaces to match mainstream CNC systems, covering 2.2kW–11kW at 220V and 380V for both asynchronous and permanent magnet synchronous motors.
7. Conclusion: VEIKONG S6 Ideal Full Closed-loop Spindle Solution
Relying on over 20 years of drive technology accumulation, strict ISO9001 quality system and international CE&IEC certification, VEIKONG deeply understands the pain points of CNC spindle stability. The S6 Series integrates mature full closed-loop algorithm, rich encoder compatibility and reliable hardware design, effectively improving machine running stability, reducing mechanical error interference and ensuring long-term consistent precision. For high-precision machining and stable mass production, VEIKONG S6 is the ideal full closed-loop spindle servo solution.
