導軌絲杠是將回轉運動轉化為直線運動，或將直線運動轉化為回轉運動的理想的產品。

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

導軌絲杠的結構：

Structure of guide screw:

導軌絲杠副的結構傳統分為內循環結構(以圓形反向器和橢圓形反向器為代表)和外循環結構(以插管為代表)兩種。這兩種結構也是常用的結構。這兩種結構性能沒有本質區別，只是內循環結構安裝連接尺寸小;外循環結構安裝連接尺寸大。目前，導軌絲杠副的結構已有10多種，但比較常用的主要有：內循環結構;外循環結構;端蓋結構;蓋板結構。

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.

導軌絲杠原理：

Guide screw principle:

1、按照國標GB/T17587.3-1998及應用實例，導軌絲杠(目前已基本取代梯形絲桿，已俗稱絲桿)是用來將旋轉運動轉化為直線運動;或將直線運動轉化為旋轉運動的執行元件，并具有傳動效率高，定位正確等

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、當導軌絲杠作為主動體時，螺母就會隨絲桿的轉動角度按照對應規格的導程轉化成直線運動，被動工件可以通過螺母座和螺母連接，從而實現對應的直線運動。

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.

導軌絲杠的特點：

Characteristics of guide screw:

1、摩擦損失小、傳動效率高

1. Low friction loss and high transmission efficiency

由于導軌絲杠副的絲杠軸與絲杠螺母之間有很多滾珠在做滾動運動,所以能得到較高的運動效率。與過去的滑動絲杠副相比驅動力矩達到1/3以下,即達到同樣運動結果所需的動力為使用滑動絲杠副的1/3.在省電方面很有幫助。

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

導軌絲杠副一般是用世界水平的機械設備連貫生產出來的，特別是在研削、組裝、檢查各工序的工廠環境方面,對溫度、濕度進行了嚴格的控制，由于完善的品質管理體制使精度得以充分保證。

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、高速進給和微進給可能

3. High speed feed and micro feed are possible

導軌絲杠副由于是利用滾珠運動,所以啟動力矩很小,不會出現滑動運動那樣的爬行現象,能保證實現微進給。

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、軸向剛度高

4. High axial stiffness

導軌絲杠副可以加與預壓,由于預壓力可使軸向間隙達到負值,進而得到較高的剛性(導軌絲杠內通過給滾珠加予壓力,在實際用于機械裝置等時,由于滾珠的斥力可使絲母部的剛性增強)。

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、不能自鎖、具有傳動的可逆性

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

導軌絲杠的主要參數：

Main parameters of guide screw:

螺紋的主要參數

Main parameters of thread

1)外徑d(大徑)(D)——與外螺紋牙頂相重合的假想圓柱面直徑——亦稱公稱直徑

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)內徑(小徑)d1(D1)——與外螺紋牙底相重合的假想圓柱面直徑，在強度計算中作危險剖面的計算直徑

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)中徑d2——在軸向剖面內牙厚與牙間寬相等處的假想圓柱面的直徑，近似等于螺紋的平均直徑 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——相鄰兩牙在中徑圓柱面的母線上對應兩點間的軸向距離

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

5)導程(S)——同一螺旋線上相鄰兩牙在中徑圓柱面的母線上的對應兩點間的軸向距離

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)線數n——螺紋螺旋線數目，一般為便于制造n≤4螺距、導程、線數之間關系：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——在中徑圓柱面上螺旋線的切線與垂直于螺旋線軸線的平面的夾角。

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——螺紋軸向平面內螺紋牙型兩側邊的夾角9)牙型斜角β——螺紋牙型的側邊與螺 紋軸線的垂直平面的夾角。對稱牙型

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

各種螺紋(除矩形螺紋)的主要幾何尺寸可查閱有關標準——公稱尺寸為螺紋外徑對管螺紋近似等于管子的內徑。

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.

克服軸向力Q勻速上升所需的圓周力

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

導軌絲杠應用：

Application of guide screw:

行業包括:IT產業 、汽車、家用電器、工作機械、鐵路、鋼鐵、工程機械發電廠電廠、石化機械等。

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

廣泛應用于數控機床，電子設備，自動化設備，激光設備等領域

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

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