导轨丝杠是将回转运动转化为直线运动，或将直线运动转化为回转运动的理想的产品。

Guide screw is an ideal product to convert rotary motion into linear motion, or convert linear motion into rotary motion.

导轨丝杠的结构：

Structure of guide screw:

导轨丝杠副的结构传统分为内循环结构(以圆形反向器和椭圆形反向器为代表)和外循环结构(以插管为代表)两种。这两种结构也是常用的结构。这两种结构性能没有本质区别，只是内循环结构安装连接尺寸小;外循环结构安装连接尺寸大。目前，导轨丝杠副的结构已有10多种，但比较常用的主要有：内循环结构;外循环结构;端盖结构;盖板结构。

The structure of guide rail screw pair is traditionally divided into internal circulation structure (represented by circular reverser and elliptical reverser) and external circulation structure (represented by intubation). These two structures are also commonly used. There is no essential difference between the two structures, but the installation and connection size of the internal circulation structure is small; The installation and connection size of external circulation structure is large. At present, there are more than 10 kinds of structures of guide rail lead screw pair, but the commonly used ones are: internal circulation structure; External circulation structure; End cover structure; Cover plate structure.

导轨丝杠原理：

Guide screw principle:

1、按照国标GB/T17587.3-1998及应用实例，导轨丝杠(目前已基本取代梯形丝杆，已俗称丝杆)是用来将旋转运动转化为直线运动;或将直线运动转化为旋转运动的执行元件，并具有传动效率高，定位正确等

1. According to the national standard GB / t17587 3-1998 and application examples, guide screw (which has basically replaced trapezoidal screw, commonly known as screw) is used to convert rotary motion into linear motion; Or an actuator that converts linear motion into rotary motion, and has high transmission efficiency, correct positioning, etc

2、当导轨丝杠作为主动体时，螺母就会随丝杆的转动角度按照对应规格的导程转化成直线运动，被动工件可以通过螺母座和螺母连接，从而实现对应的直线运动。

2. When the guide rail lead screw is used as the driving body, the nut will be transformed into linear motion according to the lead of the corresponding specification with the rotation angle of the lead screw. The passive workpiece can be connected with the nut through the nut seat, so as to realize the corresponding linear motion.

导轨丝杠的特点：

Characteristics of guide screw:

1、摩擦损失小、传动效率高

1. Low friction loss and high transmission efficiency

由于导轨丝杠副的丝杠轴与丝杠螺母之间有很多滚珠在做滚动运动,所以能得到较高的运动效率。与过去的滑动丝杠副相比驱动力矩达到1/3以下,即达到同样运动结果所需的动力为使用滑动丝杠副的1/3.在省电方面很有帮助。

Because there are many balls rolling between the lead screw shaft and the lead screw nut of the guide rail lead screw pair, high motion efficiency can be obtained. Compared with the past sliding screw pair, the driving torque is less than 1 / 3, that is, the power required to achieve the same motion result is 1 / 3 of that of the sliding screw pair It is very helpful in saving electricity.

2、精度高

2. High precision

导轨丝杠副一般是用世界水平的机械设备连贯生产出来的，特别是在研削、组装、检查各工序的工厂环境方面,对温度、湿度进行了严格的控制，由于完善的品质管理体制使精度得以充分保证。

The guide screw pair is generally produced continuously with world-class mechanical equipment, especially in the factory environment of grinding, assembly and inspection processes, the temperature and humidity are strictly controlled, and the accuracy is fully guaranteed due to the perfect quality management system.

3、高速进给和微进给可能

3. High speed feed and micro feed are possible

导轨丝杠副由于是利用滚珠运动,所以启动力矩很小,不会出现滑动运动那样的爬行现象,能保证实现微进给。

Because the guide rail screw pair uses ball motion, the starting torque is very small, and there will be no crawling phenomenon such as sliding motion, which can ensure the realization of micro feed.

4、轴向刚度高

4. High axial stiffness

导轨丝杠副可以加与预压,由于预压力可使轴向间隙达到负值,进而得到较高的刚性(导轨丝杠内通过给滚珠加予压力,在实际用于机械装置等时,由于滚珠的斥力可使丝母部的刚性增强)。

The guide screw pair can be preloaded. Due to the preload, the axial clearance can reach a negative value, so as to obtain high rigidity (by adding pressure to the ball in the guide screw, when it is actually used in mechanical devices, the rigidity of the nut can be enhanced due to the repulsion of the ball).

5、不能自锁、具有传动的可逆性

5. It cannot be self-locking and has transmission reversibility

导轨丝杠的主要参数：

Main parameters of guide screw:

螺纹的主要参数

Main parameters of thread

1)外径d(大径)(D)——与外螺纹牙顶相重合的假想圆柱面直径——亦称公称直径

1) Outer diameter D (major diameter) (d) - the diameter of the imaginary cylindrical surface coincident with the crown of the external thread - also known as the nominal diameter

2)内径(小径)d1(D1)——与外螺纹牙底相重合的假想圆柱面直径，在强度计算中作危险剖面的计算直径

2) Inner diameter (small diameter) D1 (D1) - the diameter of the imaginary cylindrical surface coincident with the bottom of the external thread, which is used as the calculated diameter of the dangerous section in the strength calculation

3)中径d2——在轴向剖面内牙厚与牙间宽相等处的假想圆柱面的直径，近似等于螺纹的平均直径 d2≈0.5(d+d1)

3) Pitch diameter D2 - the diameter of the imaginary cylindrical surface where the tooth thickness is equal to the inter tooth width in the axial section, which is approximately equal to the average diameter of the thread D2 ≈ 0.5 (D + D1)

4)螺距P——相邻两牙在中径圆柱面的母线上对应两点间的轴向距离

4) Pitch P - axial distance between two points corresponding to the generatrix of two adjacent teeth on the pitch diameter cylindrical surface

5)导程(S)——同一螺旋线上相邻两牙在中径圆柱面的母线上的对应两点间的轴向距离

5) Lead (s) - axial distance between two corresponding points of two adjacent teeth on the generatrix of pitch diameter cylinder on the same helix

6)线数n——螺纹螺旋线数目，一般为便于制造n≤4螺距、导程、线数之间关系：S=nP

6) Number of threads n - number of spiral threads of threads, generally for ease of manufacturing, n ≤ 4, relationship between pitch, lead and number of threads: S = NP

7)螺旋升角ψ——在中径圆柱面上螺旋线的切线与垂直于螺旋线轴线的平面的夹角。

7) Spiral angle ψ—— The angle between the tangent of the helix and the plane perpendicular to the axis of the helix on the pitch diameter cylinder.

8)牙型角α——螺纹轴向平面内螺纹牙型两侧边的夹角9)牙型斜角β——螺纹牙型的侧边与螺 纹轴线的垂直平面的夹角。对称牙型

8) Tooth angle α—— Included angle of both sides of thread profile in axial plane of thread 9) bevel angle of profile β—— The angle between the side of the thread profile and the vertical plane of the thread axis. Symmetrical tooth pattern

各种螺纹(除矩形螺纹)的主要几何尺寸可查阅有关标准——公称尺寸为螺纹外径对管螺纹近似等于管子的内径。

Refer to relevant standards for the main geometric dimensions of various threads (except rectangular threads) - the nominal size is the outer diameter of the thread, which is approximately equal to the inner diameter of the pipe thread.

克服轴向力Q匀速上升所需的圆周力

Overcome the circumferential force required for the uniform rise of axial force Q

导轨丝杠应用：

Application of guide screw:

行业包括:IT产业 、汽车、家用电器、工作机械、铁路、钢铁、工程机械发电厂电厂、石化机械等。

Industries include: IT industry, automobile, household appliances, working machinery, railway, steel, construction machinery, power plant, petrochemical machinery, etc.

广泛应用于数控机床，电子设备，自动化设备，激光设备等领域

Widely used in CNC machine tools, electronic equipment, automation equipment, laser equipment and other fields

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