On machine tools, there is a component made of slender metal rods. Above is a highly polished surface, some even with threads.

一般在機床上面有螺紋的，叫絲杠。

Generally, there are threads on the machine tool, called lead screws.

光杠：使刀架做縱向或橫向自動進給。車削一般零件絲杠：車削螺紋用。

Light bar: causes the tool holder to automatically feed vertically or horizontally. Turning general parts screw: used for turning threads.

梯形絲杠的作用形式

The action form of trapezoidal screw

梯形絲杠型號規格,梯形絲杠選型

Model and specifications of trapezoidal screw, selection of trapezoidal screw

梯形絲杠帶螺紋就是絲桿螺紋是梯形螺紋的絲杠，分公英制兩種.梯形絲杠具有傳動效率高，定位準確等特點.而且承載力大,并具有自鎖功能. 梯形螺紋一般用于傳動，往往有較高質量要求。

Trapezoidal screw with thread is a type of screw with trapezoidal thread, divided into two types: metric and English. Trapezoidal screw has high transmission efficiency, accurate positioning, and large bearing capacity, as well as self-locking function Trapezoidal threads are generally used for transmission and often have high quality requirements.

在車削完畢后較好還要進行熱處理，然后上專用磨床上去磨。還有一個辦法就是銑。有專用的梯形絲杠銑床可以加工。在普通立式數控銑床上，如果配上數控分度頭和專用刀具，用上第四軸控制功能也可以銑出來，同理臥式銑床也可以做。不過銑出來還是得繼續熱處理加磨。不淬火不耐磨，不磨表面質量不高。機床絲杠根據用途及使用要求分為7個等級,即3級,4級,5級,6級,7級,8級,9級,3級精度較高, 依次逐漸減低.8級精度以上絲杠所配螺母精度允許比絲杠低一個精度等級. 3級,4級,5級,6級精度的絲杠檢測螺旋線軸向誤差, 7級,8級,9級精度的絲杠檢測螺距誤差和螺距累積誤差。

After turning, it is better to undergo heat treatment and then use a dedicated grinding machine to grind. Another method is milling. There is a dedicated trapezoidal screw milling machine that can be processed. On a regular vertical CNC milling machine, if equipped with a CNC indexing head and specialized tools, it can also be milled using the fourth axis control function, similar to a horizontal milling machine. However, the milling process still requires further heat treatment and grinding. No quenching, no wear resistance, and low surface quality without grinding. Machine tool screws are divided into 7 levels based on their purpose and usage requirements, namely 3 levels, 4 levels, 5 levels, 6 levels, 7 levels, 8 levels, 9 levels. The accuracy of level 3 is relatively high, and gradually decreases. The accuracy of nuts equipped with screws above level 8 is allowed to be one accuracy level lower than that of the screw Level 3, 4, 5, and 6 precision screw detection spiral axial error, level 7, 8, and 9 precision screw detection pitch error and cumulative pitch error.

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