La capacità di carico di una vite a ricircolo di sfere dipende da diversi fattori, tra cui le dimensioni, la forma, il materiale, la qualità di progettazione e produzione della vite vite a ricircolo di sfere. Generalmente la capacità di carico di una vite a ricircolo di sfere è indicata nelle specifiche tecniche e nelle tabelle dei parametri fornite dal produttore. Queste tabelle delle specifiche solitamente elencano la capacità di carico nominale, la capacità di carico massima, la velocità nominale e la durata operativa nominale della vite a ricircolo di sfere. La capacità di carico nominale si riferisce al carico consigliato della vite a ricircolo di sfere nelle condizioni di calibrazione del progetto, mentre la capacità di carico massima si riferisce al carico massimo che la vite a ricircolo di sfere può sopportare, ma può ridurre la durata della vite a ricircolo di sfere o causare altri effetti collaterali . La capacità di carico di una vite a ricircolo di sfere è influenzata anche dall'ambiente operativo e dalle condizioni di utilizzo. Ad esempio, la capacità di carico di una vite a ricircolo di sfere può ridursi in un ambiente ad alta temperatura. Pertanto, quando si seleziona e si utilizza una vite a ricircolo di sfere, è necessario considerare fattori quali il tipo di carico, la direzione, la velocità, l'accelerazione e la temperatura operativa. In sintesi, per determinare la capacità di carico di una vite a ricircolo di sfere, è meglio fare riferimento alla tabella delle specifiche fornita dal produttore e assicurarsi che venga selezionata e utilizzata in base alle effettive condizioni di applicazione.

The spline screw in the SCARA (Selective Compliance Assembly Robot Arm) four-axis robot is a key transmission component, mainly used to achieve high-precision linear motion and rotational motion (θ axis, usually the fourth axis) of the robot in the vertical direction (Z axis). The following is its detailed use and description: 1. Main use Z-axis lifting motion: The spline screw converts the rotational motion of the motor into precise linear motion, driving the end effector of the robot arm (such as grippers, suction cups, etc.) to move up and down in the vertical direction. Rotational motion transmission: The spline structure transmits torque at the same time to achieve the rotation of the fourth axis (such as the rotation of the end tool), meeting the needs of assembly, screw tightening and other operations. High precision and rigidity: Suitable for scenarios that require repeatable positioning accuracy (such as ±0.01mm) and resistance to lateral forces (such as precision assembly and handling). Synchronous motion: When the Z-axis lifting and rotational motions work together (such as inserting parts), the spline screw can ensure the synchronization of the two motions. 2. Structural description Spline part: The external spline cooperates with the internal spline sleeve to transmit the rotational torque (θ axis), while allowing the shaft to slide up and down in the spline sleeve (Z axis), realizing the combination of rotation and linear motion. Screw part: The precision ball screw converts the rotation of the servo motor into linear motion, providing high-precision, low-friction lifting drive. Integrated design: The spline and the screw are usually integrated on the same shaft, saving space and simplifying the transmission chain. 3. Core features High load capacity: The spline structure disperses torque and radial force, suitable for cantilever loads (such as horizontally extended robotic arms). Low backlash: The preloaded ball screw and spline cooperate to reduce the motion gap and improve the repeatability. Compactness: The integrated design reduces external transmission components and adapts to the narrow joint space of the SCARA robot. Durability: Hardened steel or coating technology is used, which is wear-resistant and has a long life (such as more than 20,000 hours). 4. Typical application scenarios Electronic assembly: PCB board plug-in, chip handling (requires Z-axis precision lifting + rotation alignment). Automated production line: screwing, gluing (rotation and pressing action). Medical equipment: reagent packaging, test tube operation (dust-free, low vibration requirements). 5. Comparison with other transmission methods Characteristics Spline screw Timing belt + guide rod Linear motor Accuracy High (μm grade) Medium (affected by belt elasticity) Very high Load capacity High (suitable for heavy loads) Medium-low Medium Cost Medium Low High Maintenance complexity Regular lubrication Belt replacement Almost maintenance-free 6. Selection considerations Accuracy level: Select C3/C5 screw according to the task. Dust-proof design: Sealed spline sleeve prevents dust from entering (such as IP54 protection). Lubrication method: Automatic lubrication or maintenance-free grease design. Through the composite function of the spline screw, the SCARA robot can efficiently complete complex movements with limited degrees of freedom, becoming the mainstream choice in 3C, automotive electronics and other fields.

The role of the ball screw is to achieve "precise, efficient, and fast electronically controlled linear motion," serving as a critical bridge between electrical signals and physical action. Its role is specifically reflected in the following aspects: 1. Core Role: Enabling Electronic Control and Replacing Traditional Systems The core characteristics of new energy vehicles are electronic control and intelligence, requiring electrical signals to control all physical movements. The ball screw serves as a perfect replacement for traditional hydraulic and pneumatic systems, becoming an ideal electronically controlled actuator. Traditional vehicles use hydraulic and vacuum assist systems. New energy vehicles use a combination of motors and ball screws, directly generating precise linear force and motion through electrical energy. 2. Three Key Roles [Intelligent Safety Actuator] - Primarily in electronic braking and steer-by-wire systems Function: Instantly converts electrical signals from the brake pedal or autonomous driving computer into tangible braking or steering force. Value: Response speeds far exceed those of hydraulic systems (in the millisecond range), providing the fast and precise execution necessary for advanced automated driving systems (ADAS), directly impacting driving safety. [Energy Regeneration Amplifier] - Primarily used in electronically controlled braking systems Function: Enables extremely precise control of brake pad clamping force, achieving seamless and perfect coordination between friction braking and electric motor-generated regenerative braking. Value: Maximizes braking energy recovery, converting it into electricity and charging it back into the battery, directly increasing the vehicle's range. This is difficult to achieve with ordinary hydraulic braking systems. [Ride Comfort Regulator] - Primarily used in active suspension systems Function: Based on road conditions and driving mode, the motor-driven ball screw quickly and precisely adjusts shock absorber damping or air suspension height. Value: Enhances vehicle comfort, stability, and handling, achieving a "magic carpet"-like ride, while also lowering the vehicle at high speeds to save energy. Conclusion: In new energy vehicles, the ball screw is far more than a simple mechanical component; it is a key enabling technology. By providing efficient and precise linear motion, it helps new energy vehicles achieve smarter driving, longer battery life, more comfortable experience and simpler design. It is one of the indispensable core components for new energy vehicles to move towards higher levels of electrification and intelligence.