　　Because the motor outputs rotational power; And the lifting and stepping of arms and legs are all; Straight line motion instead of circular motion, right; So how can we control the rotational motion of the motor; What about converting it into linear motion?; We need a screw;

　　下面我用大白話來解釋；絲杠就是一個螺母+一根螺桿；當螺桿被電機帶動；做旋轉(zhuǎn)運動時；螺母就不斷在螺桿上前進；就形成了直線運動；這就是普通的梯形滑動絲杠；而反之當螺母旋轉(zhuǎn)；驅(qū)動螺桿做直線運動；就叫反向式絲杠；梯形絲杠的摩擦阻力；會降低傳動的精度和效率；于是工程師把梯形螺紋改為；圓弧并放上珠子來減少摩擦；當螺桿旋轉(zhuǎn)時珠子滾動；帶動螺母向前運動；這就是滾珠絲杠；

　　I will explain in plain language below; A screw is a nut and a screw; When the screw is driven by the motor; When performing rotational motion; The nut keeps moving forward on the screw; It forms a linear motion; This is the most common trapezoidal sliding screw; On the contrary, when the nut rotates; Drive the screw to perform linear motion; It's called a reverse screw; Friction resistance of trapezoidal screw; Will reduce the accuracy and efficiency of transmission; So the engineer changed the trapezoidal thread to; Arc and place beads to reduce friction; When the screw rotates, the beads roll; Drive the nut forward; This is a ball screw;

　　傳動效率能超過85%；適用手術(shù)機器人；這類高精度的操作；

　　The transmission efficiency can exceed 85%; Suitable for surgical robots; This type of high-precision operation;

　　但滾珠絲杠的缺點是每個珠子和螺桿都是點的接觸；所以受點力就容易磨損；還需要潤滑防塵；那讓機器人干點臟活累活；這滾珠絲杠可就扛不住了；于是；工程師又把珠子改為了柱子；一字之差，卻是天地之別；那滾柱絲杠又是怎么回事呢；當螺桿做旋轉(zhuǎn)運動時；帶動滾柱自轉(zhuǎn)并沿螺桿公轉(zhuǎn)；就像行星自轉(zhuǎn)和公轉(zhuǎn)一樣；所以名字叫做行星滾柱絲杠；

　　But the disadvantage of ball screws is that each bead and screw are in point contact; So it is easy to wear out when subjected to some force; Lubrication and dust prevention are also required; Let the robot do some dirty and tiring work; This ball screw can't handle it anymore; therefore; The engineer changed the beads into pillars again; The difference of one word is the difference between heaven and earth; What's going on with the roller screw; When the screw rotates; Drive the roller to rotate and revolve along the screw; Just like the rotation and revolution of planets; So the name is planetary roller screw;
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　　柱子的接觸面積大；受力面積更大；多根滾柱的承載力就更強；傳動效率也更高達到90%以上；所以行星滾柱絲杠傳動精度高；承載大、耐沖擊、壽命長；像特斯拉Optimus機器人的；大臂、小臂、大腿和小腿的；14個線性執(zhí)行器；用的都是反向式行星滾柱絲杠；不過這行星滾柱絲杠可嬌貴著呢；

　　The contact area of the pillar is large; The force bearing area is larger; The load-bearing capacity of multiple rollers is stronger; The transmission efficiency is also higher, reaching over 90%; So the planetary roller screw transmission has high accuracy; Large load-bearing capacity, impact resistance, and long service life; Like Tesla Optimus robots; The upper arm, lower arm, thighs, and calves; 14 linear actuators; We use reverse planetary roller screws; However, this planetary roller screw is quite delicate;

　　生產(chǎn)工藝規(guī)格極高；目前主要被德國的舍弗勒和；日本的THK、NSK等廠商壟斷；

　　The production process specifications are extremely high; At present, it is mainly supported by Germany's Schaeffler and; Japanese manufacturers such as THK and NSK monopolize;

　　國產(chǎn)替代剛剛發(fā)力；其中主要有長盛、五洲、北特；秦川、雙林、恒立液壓；南方精工、貝斯特、震裕；之后視頻咱扒一扒；絲杠國產(chǎn)替代的進度可好？；留言里告訴我；

　　Domestic substitution has just begun to gain momentum; Among them, there are mainly Changsheng, Wuzhou, and Beite; Qinchuan, Shuanglin, Hengli Hydraulic; Southern Precision, Best, Zhenyu; Afterwards, let's take a look at the video; How is the progress of domestic substitution of lead screws?; Tell me in the message;