1、梯形絲杠和滾珠絲杠的結(jié)構(gòu)不同。

1. The structure of trapezoidal screw and ball screw is different.

梯形絲杠的結(jié)構(gòu)簡(jiǎn)單、不復(fù)雜，主要是由螺桿和螺母組成，安裝簡(jiǎn)單方便，但精度要求達(dá)不到。而滾珠絲杠則是由螺桿、螺母、鋼球、預(yù)壓片、反向器、防塵器組成，結(jié)構(gòu)復(fù)雜，安裝要求高，但精度高，并已逐漸替代梯形絲杠的使用。下面就是梯形絲杠和滾珠絲杠的結(jié)構(gòu)圖。

The structure of trapezoidal screw is simple and not complicated, mainly composed of screw and nut, easy to install, but the accuracy requirements cannot be met. Ball screws, on the other hand, are composed of screws, nuts, steel balls, pre press plates, reversers, and dust collectors. They have a complex structure and high installation requirements, but with high precision, and have gradually replaced the use of trapezoidal screws. The following are the structural diagrams of trapezoidal screw and ball screw.

2、梯形絲杠和滾珠絲杠的工作原理不同。

2. The working principles of trapezoidal screw and ball screw are different.

梯形絲杠的工作原理為：梯形絲杠是依靠絲母與絲杠之間的油膜產(chǎn)生相對(duì)滑動(dòng)工作的，滑動(dòng)摩擦從而完成直線運(yùn)動(dòng)。

The working principle of a trapezoidal screw is that it relies on the oil film between the lead screw and the screw to generate relative sliding work, and sliding friction completes linear motion.

滾珠絲杠的工作原理為：當(dāng)絲杠作為主動(dòng)體時(shí)，螺母就會(huì)隨絲杠的轉(zhuǎn)動(dòng)角度按照對(duì)應(yīng)規(guī)格的導(dǎo)程轉(zhuǎn)化成直線運(yùn)動(dòng)，被動(dòng)工件可以通過螺母座和螺母連接，從而實(shí)現(xiàn)對(duì)應(yīng)的直線運(yùn)動(dòng)。

The working principle of ball screw is that when the screw acts as the active body, the nut will convert into linear motion according to the corresponding specifications of the lead according to the rotation angle of the screw. The passive workpiece can be connected to the nut seat and nut to achieve corresponding linear motion.

3、梯形絲杠和滾珠絲杠的特點(diǎn)不同。

3. The characteristics of trapezoidal screw and ball screw are different.

梯形絲杠的特點(diǎn)是成本低、應(yīng)用于要求精度較低的一些機(jī)床等設(shè)備，梯形絲杠的安裝簡(jiǎn)單、結(jié)構(gòu)不復(fù)雜、維修較為方便，但摩擦系數(shù)較大、精度達(dá)不到較高標(biāo)準(zhǔn)。

The characteristics of trapezoidal screw are low cost and application in some machine tools and equipment with low precision requirements. The installation of trapezoidal screw is simple, the structure is not complicated, and the maintenance is relatively convenient, but the friction coefficient is high and the accuracy cannot reach a high standard.

滾珠絲杠的特點(diǎn)是摩擦系數(shù)小、動(dòng)態(tài)響應(yīng)快、易于控制、精度高。滾珠絲杠在生產(chǎn)過程中，滾道和珠子之間施加預(yù)緊力，可以間隙，所以滾珠絲杠可以達(dá)到無間隙配合。被廣泛應(yīng)用于數(shù)控機(jī)床等精密要求高的設(shè)備。但也有較高、安裝要求高、維修成本高等特點(diǎn)。

The characteristics of ball screws are low friction coefficient, fast dynamic response, easy control, and high precision. During the production process of ball screws, pre tension is applied between the raceway and the beads to eliminate gaps, so ball screws can achieve a seamless fit. Widely used in precision demanding equipment such as CNC machine tools. But it also has the characteristics of high price, high installation requirements, and high maintenance costs.

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