導(dǎo)軌絲杠：人形機(jī)器人精密傳動核心，三類主流型號適配不同場景

　　Guide screw: Precision transmission core for humanoid robots, three mainstream models suitable for different scenarios

　　人形機(jī)器人的靈活運(yùn)轉(zhuǎn)、合理動作，離不開核心傳動部件的支撐，而導(dǎo)軌絲杠，正是其中不可或缺的“動力傳遞樞紐”。很多人對導(dǎo)軌絲杠的認(rèn)知較為模糊，甚至將其與普通傳動部件混為一談，殊不知它是決定人形機(jī)器人傳動精度、承載能力和使用壽命的關(guān)鍵。作為將旋轉(zhuǎn)運(yùn)動轉(zhuǎn)化為直線運(yùn)動的核心機(jī)械部件，導(dǎo)軌絲杠的性能直接影響人形機(jī)器人的動作流暢度與運(yùn)行穩(wěn)定性。今天就詳細(xì)解析導(dǎo)軌絲杠的核心技術(shù)、分類及特性，解答“人形機(jī)器人精密傳動，為何離不開導(dǎo)軌絲杠”的核心問題，用通俗且專業(yè)的語言，帶大家讀懂導(dǎo)軌絲杠的核心價值。

　　The flexible operation and precise movements of humanoid robots rely on the support of core transmission components, and the guide screw is an indispensable "power transmission hub". Many people have a vague understanding of the guide screw, and even confuse it with ordinary transmission components, unaware that it is the key to determining the transmission accuracy, load-bearing capacity, and service life of humanoid robots. As the core mechanical component that converts rotational motion into linear motion, the performance of guide screws directly affects the smoothness and stability of humanoid robot movements. Today, we will provide a detailed analysis of the core technology, classification, and characteristics of guide screws, and answer the core question of "why precision transmission of humanoid robots cannot do without guide screws". In simple and professional language, we will guide you to understand the core value of guide screws.

　　導(dǎo)軌絲杠的核心作用，是實現(xiàn)“旋轉(zhuǎn)運(yùn)動與直線運(yùn)動的合理轉(zhuǎn)換”，這也是人形機(jī)器人關(guān)節(jié)活動、肢體伸縮的核心動力來源。不同于普通傳動部件，導(dǎo)軌絲杠憑借高精度、低摩擦、高穩(wěn)定性的優(yōu)勢，能合理傳遞動力，確保人形機(jī)器人的每一個動作都合理可控，無論是細(xì)微的關(guān)節(jié)轉(zhuǎn)動，還是大幅度的肢體活動，大多能實現(xiàn)平穩(wěn)、快捷的傳動，這也是它成為人形機(jī)器人精密傳動核心部件的關(guān)鍵原因。

　　The core function of the guide screw is to achieve precise conversion between rotational motion and linear motion, which is also the core power source for joint movement and limb extension of humanoid robots. Unlike ordinary transmission components, the guide screw, with its advantages of high precision, low friction, and high stability, can accurately transmit power, ensuring that every action of the humanoid robot is precise and controllable. Whether it is subtle joint rotation or significant limb movement, it can achieve smooth and efficient transmission, which is also the key reason why it has become the core component of precision transmission for humanoid robots.

　　從核心分類來看，導(dǎo)軌絲杠主要分為滑動絲杠、滾動絲杠和靜壓絲杠三大類，三類產(chǎn)品的結(jié)構(gòu)、特性各不相同，適配場景也各有側(cè)重，其中滾動絲杠在人形機(jī)器人領(lǐng)域的適配性非常強(qiáng)，也是目前應(yīng)用非常廣泛的類型。很多人疑惑，為何滾動絲杠更適合人形機(jī)器人？核心在于它的傳動效率和精度，能巧妙匹配人形機(jī)器人對精密傳動的核心需求，而滾動絲杠又進(jìn)一步分為滾珠絲杠和行星滾柱絲杠兩大細(xì)分類型。

　　From the perspective of core classification, guide screws are mainly divided into three categories: sliding screws, rolling screws, and static pressure screws. The structures and characteristics of the three types of products are different, and their adaptation scenarios are also focused on. Among them, rolling screws have the strongest adaptability in the field of humanoid robots and are currently the most widely used type. Many people wonder why rolling screws are more suitable for humanoid robots? The core lies in its transmission efficiency and accuracy, which can perfectly match the core requirements of humanoid robots for precision transmission. Rolling screws are further divided into two sub types: ball screws and planetary roller screws.

　　這里補(bǔ)充一個專業(yè)知識點(diǎn)：導(dǎo)軌絲杠的核心組成部件包括絲杠軸、螺母、保持架、行星滾柱（或滾珠）、彈簧擋圈、內(nèi)齒輪等，其中螺母與絲杠軸的配合精度，直接決定傳動精度；保持架的作用是固定滾珠或行星滾柱的位置，避免運(yùn)動過程中出現(xiàn)偏移、碰撞，確保傳動順暢；彈簧擋圈則起到限位作用，防止部件脫落，保障運(yùn)行安全，這些部件協(xié)同工作，構(gòu)成了導(dǎo)軌絲杠的完整傳動體系。

　　Here is an additional professional knowledge point: the core components of a guide screw include the screw shaft, nut, cage, planetary roller (or ball), spring retaining ring, internal gear, etc. The precision of the nut's fit with the screw shaft directly determines the transmission accuracy; The function of the cage is to fix the position of the ball or planetary roller, avoid deviation and collision during movement, and ensure smooth transmission; The spring retaining ring plays a limiting role, preventing components from falling off and ensuring safe operation. These components work together to form a complete transmission system for the guide screw.

　　行星滾柱絲杠，是滾動絲杠中適配人形機(jī)器人重載場景的核心型號，其非常突出的特性的是承載力大、使用壽命長、傳動效率高。相較于其他類型，行星滾柱絲杠通過滾柱與絲杠軸、螺母的線接觸傳動，接觸面積更大，能承受更大的軸向載荷，即便長期處于高強(qiáng)度運(yùn)轉(zhuǎn)狀態(tài)，也能保持穩(wěn)定性能，不易出現(xiàn)磨損、變形，非常適合人形機(jī)器人關(guān)節(jié)等需要承受較大載荷的部位，能有效延長機(jī)器人的使用壽命。

　　The planetary roller screw is the core model of the rolling screw that is suitable for heavy-duty scenarios of humanoid robots. Its most prominent features are high load-bearing capacity, long service life, and high transmission efficiency. Compared to other types, planetary roller screws are driven through linear contact between rollers, screw shafts, and nuts, with a larger contact area and the ability to withstand larger axial loads. Even in high-intensity operation for a long time, they can maintain stable performance and are not prone to wear and deformation. They are very suitable for parts of humanoid robots that require heavy loads, such as joints, and can effectively extend the service life of the robot.

　　滾珠絲杠則是滾動絲杠中側(cè)重高精度場景的型號，它兼具高精度、可逆性和快捷率的特點(diǎn)，核心優(yōu)勢在于摩擦阻力出彩小。由于滾珠絲杠采用滾珠與絲杠軸、螺母的點(diǎn)接觸傳動，摩擦系數(shù)遠(yuǎn)低于滑動絲杠，能實現(xiàn)合理的直線運(yùn)動，同時具備良好的可逆性，既能將旋轉(zhuǎn)運(yùn)動轉(zhuǎn)化為直線運(yùn)動，也能將直線運(yùn)動轉(zhuǎn)化為旋轉(zhuǎn)運(yùn)動，廣泛應(yīng)用于人形機(jī)器人需要高精度動作的部位，比如手部抓取、頭部轉(zhuǎn)動等，確保動作合理無誤。

　　Ball screw is a type of rolling screw that focuses on high-precision scenarios. It has the characteristics of high precision, reversibility, and high efficiency, and its core advantage lies in extremely low friction resistance. Due to the point contact transmission between the ball and the screw shaft and nut, the friction coefficient of the ball screw is much lower than that of the sliding screw, which can achieve precise linear motion and has good reversibility. It can convert rotational motion into linear motion and also convert linear motion into rotational motion. It is widely used in parts of humanoid robots that require high-precision movements, such as hand grasping and head rotation, ensuring accurate and error free movements.

　　除了滾動絲杠，滑動絲杠和靜壓絲杠也有其獨(dú)特的應(yīng)用場景，只是在人形機(jī)器人領(lǐng)域的適配性相對較低。滑動絲杠結(jié)構(gòu)簡單、成本低廉，通過絲杠軸與螺母的滑動摩擦實現(xiàn)傳動，但其摩擦阻力大、傳動效率低、精度有限，更適合對精度和效率要求不高的普通工業(yè)場景；靜壓絲杠則憑借出彩低的摩擦阻力、出眾的精度和穩(wěn)定性，適配出眾精密儀器，但結(jié)構(gòu)復(fù)雜、成本較高，目前暫未廣泛應(yīng)用于人形機(jī)器人領(lǐng)域。

　　In addition to rolling screws, sliding screws and static pressure screws also have their unique application scenarios, but their adaptability in the field of humanoid robots is relatively low. The sliding screw structure is simple and cost-effective, and transmission is achieved through the sliding friction between the screw shaft and the nut. However, it has high frictional resistance, low transmission efficiency, and limited accuracy, making it more suitable for ordinary industrial scenarios that do not require high precision and efficiency; Static pressure screw is suitable for high-end precision instruments due to its extremely low friction resistance, high precision, and stability. However, its complex structure and high cost have not yet been widely used in the field of humanoid robots.

　　很多人會混淆導(dǎo)軌絲杠與普通絲杠，其實兩者的核心區(qū)別在于“導(dǎo)向性”——普通絲杠僅能實現(xiàn)傳動功能，而導(dǎo)軌絲杠整合了導(dǎo)向與傳動雙重功能，能在實現(xiàn)旋轉(zhuǎn)與直線運(yùn)動轉(zhuǎn)換的同時，確保運(yùn)動軌跡的合理性，避免出現(xiàn)偏移、晃動，這也是它能適配人形機(jī)器人精密傳動需求的關(guān)鍵優(yōu)勢。對于人形機(jī)器人而言，每一個動作的合理度都至關(guān)重要，導(dǎo)軌絲杠的導(dǎo)向功能，能有效保障機(jī)器人動作的穩(wěn)定性和合理性，避免因傳動偏移導(dǎo)致動作失誤。

　　Many people confuse guide screw with ordinary screw, but the core difference between the two lies in "guidance" - ordinary screw can only achieve transmission function, while guide screw integrates the dual functions of guidance and transmission, which can ensure the accuracy of the motion trajectory while realizing the conversion between rotation and linear motion, avoiding deviation and shaking. This is also the key advantage of it in adapting to the precision transmission needs of humanoid robots. For humanoid robots, the accuracy of each action is crucial, and the guiding function of the guide screw can effectively ensure the stability and accuracy of the robot's actions, avoiding motion errors caused by transmission offset.

　　在人形機(jī)器人的實際應(yīng)用中，導(dǎo)軌絲杠的選型也有明確的原則：重載部位優(yōu)先選用行星滾柱絲杠，兼顧承載力與使用壽命；高精度動作部位優(yōu)先選用滾珠絲杠，確保動作合理可控；而對于無需高精度、低載荷的輔助部位，可根據(jù)成本需求選用滑動絲杠。合理的選型，既能保障機(jī)器人的運(yùn)行性能，也能控制生產(chǎn)成本，實現(xiàn)性價比非常大化。

　　In the practical application of humanoid robots, there are clear principles for selecting guide screws: planetary roller screws are preferred for heavy-duty parts, taking into account both load-bearing capacity and service life; High precision action parts prioritize the use of ball screws to ensure precise and controllable movements; For auxiliary parts that do not require high precision and low load, sliding screws can be selected according to cost requirements. Reasonable selection can ensure the operational performance of robots and control production costs, achieving maximum cost-effectiveness.

　　值得注意的是，導(dǎo)軌絲杠的性能不僅取決于其類型和結(jié)構(gòu)，還與制造工藝密切相關(guān)。高精度的導(dǎo)軌絲杠，需要經(jīng)過精密加工、熱處理、精度檢測等多道工序，確保絲杠軸的直線度、螺母與絲杠的配合精度，以及各部件的耐磨性、穩(wěn)定性。優(yōu)良的導(dǎo)軌絲杠，能在長期高強(qiáng)度運(yùn)轉(zhuǎn)中保持穩(wěn)定的傳動精度，減少維護(hù)成本，為機(jī)器人的穩(wěn)定運(yùn)行提供保障。

　　It is worth noting that the performance of guide screw not only depends on its type and structure, but also closely related to the manufacturing process. High precision guide screw requires multiple processes such as precision machining, heat treatment, and precision testing to ensure the straightness of the screw shaft, the precision of the nut and screw fit, as well as the wear resistance and stability of each component. High quality guide screws can maintain stable transmission accuracy during long-term high-intensity operation, reduce maintenance costs, and provide guarantees for the stable operation of robots.

　　總結(jié)來說，導(dǎo)軌絲杠是人形機(jī)器人精密傳動繞不開的核心部件，其三類主流型號（滑動絲杠、滾動絲杠、靜壓絲杠）各有側(cè)重，其中滾動絲杠（滾珠絲杠、行星滾柱絲杠）憑借高精度、高傳動效率、高承載力的優(yōu)勢，成為人形機(jī)器人的優(yōu)選。它通過合理的旋轉(zhuǎn)與直線運(yùn)動轉(zhuǎn)換，搭配導(dǎo)向功能，確保機(jī)器人動作合理、流暢、穩(wěn)定，同時不同型號的適配性，能滿足機(jī)器人不同部位的傳動需求。讀懂導(dǎo)軌絲杠的核心技術(shù)與特性，才能更好地理解人形機(jī)器人的運(yùn)行原理，也能為精密傳動領(lǐng)域的應(yīng)用提供參考，推動人形機(jī)器人技術(shù)的進(jìn)一步發(fā)展。

　　In summary, the guide screw is the core component that cannot be bypassed in the precision transmission of humanoid robots. The three mainstream models (sliding screw, rolling screw, and static pressure screw) have their own focuses, among which rolling screw (ball screw, planetary roller screw) has become the preferred choice for humanoid robots due to its high precision, high transmission efficiency, and high load-bearing capacity. It ensures precise, smooth, and stable robot movements through precise rotation and linear motion conversion, combined with guidance functions. At the same time, the adaptability of different models can meet the transmission needs of different parts of the robot. Understanding the core technology and characteristics of guide screws is essential for a better understanding of the operating principles of humanoid robots, and can also provide reference for the application of precision transmission, promoting further development of humanoid robot technology.