1、THK直線導軌的導向精度、THK導軌的觸摸精度、THK導軌的布局方式、數控機床動導軌及支承導軌的剛度和熱變形、安裝質量以及動壓導軌和靜壓導軌之間油膜的剛度。

1. The guiding accuracy of THK linear guide rail, the touch accuracy of THK guide rail, the layout of THK guide rail, the stiffness and thermal deformation of CNC machine tool dynamic guide rail and support guide rail, installation quality, and the stiffness of the oil film between dynamic pressure guide rail and static pressure guide rail.

2、耐磨性好及壽命長THK導軌的耐磨性決議了導軌的精度堅持性。 THK直線導軌沿支承導軌面長時間運轉會引起導軌的不均勻磨損，搖臂鉆床損壞導軌的導向精度，然后影響機床的加工精度。

2. The good wear resistance and long service life of THK guide rails determine the precision persistence of the guide rails. Long term operation of THK linear guide rail along the supporting guide rail surface can cause uneven wear of the guide rail, damage the guiding accuracy of the guide rail by the rocker drilling machine, and then affect the machining accuracy of the machine tool.

3、THK直線導軌滿足的剛度導軌要有滿足的剛度，包管在載荷效果下不發生過大的變形，然后包管各部件間的相對方位和導向精度。

3. The THK linear guide rail must meet the required stiffness, ensuring that it does not undergo excessive deformation under load effects, and also ensuring the relative orientation and guidance accuracy between various components.

4、低速運動的平穩性在低速運動時，作為運動部件的動導軌易發生匍匐，進給運動的匍匐，將進步被加工外表的外表粗糙度值，故需求THK導軌低速運動平穩，不發生匍匐，這關于高精度機床特別重要。

4. The smoothness of low-speed motion: During low-speed motion, the moving guide rail, as a moving component, is prone to creeping. The creeping of the feed motion will improve the surface roughness value of the processed surface. Therefore, it is necessary for the THK guide rail to move smoothly at low speeds without creeping, which is particularly important for high-precision machine tools.

THK直線導軌導向精度的影響因素解析圖：

Analysis of Factors Affecting the Guidance Accuracy of THK Linear Guides:

工藝性好描繪導軌時，要注意到制作、調整和修理便利；力求布局簡略、工藝性好及經濟性好。 導軌是進給體系的重要環節，是機床的根本布局要素之一，導軌的效果是導向和支承，即支承運動部件并包管其能在外力的效果下精確地沿著規則的方向運動。

When describing guide rails with good craftsmanship, attention should be paid to the convenience of production, adjustment, and repair; Strive for a simple layout, good craftsmanship, and good economy. The guide rail is an important part of the feed system and one of the fundamental layout elements of the machine tool. The effect of the guide rail is to guide and support, that is, to support the moving parts and ensure that they can move accurately in a regular direction under the effect of external forces.

數控機床機床的加工精度和壽命在很大程度上決議于機床導軌的質量。與一般機床導軌比較，數控機床導軌有更高的需求：如高速進給時不振蕩、搖臂鉆床低速進給時不匍匐、具有高的靈敏度、能在重載下長時間接連地作業、耐磨性高、精度堅持性好等。 導軌的品種 數控機床用導軌按運動軌道可分為直線運動導軌和圓周運動導軌；按作業性質可分為主運動導軌、進給運動導軌和調整導軌；按受力狀況可分為開式導軌和閉式導軌；按觸摸面沖突性質，現代數控機床廣泛選用的導軌有翻滾導軌和滑動導軌(塑料滑動導軌、靜壓導軌及動壓導軌)。 塑料滑動導軌 滑動導軌具有布局簡略、制作便利、觸摸剛度大等長處。但傳統滑動導軌沖突阻力大，磨損快，動、靜沖突因數不一樣大，低速時易發生匍匐表象。

The machining accuracy and service life of CNC machine tools are largely determined by the quality of the machine tool guide rails. Compared with general machine tool guides, CNC machine tool guides have higher requirements, such as no oscillation during high-speed feed, no creeping during low-speed feed of rocker drilling machines, high sensitivity, ability to operate continuously for a long time under heavy loads, high wear resistance, and good precision persistence. The types of guide rails for CNC machine tools can be divided into linear motion guide rails and circular motion guide rails according to the motion track; According to the nature of the assignment, it can be divided into main motion guide rail, feed motion guide rail, and adjustment guide rail; According to the force condition, it can be divided into open guide rails and closed guide rails; According to the nature of touch surface conflicts, modern CNC machine tools widely use rolling guides and sliding guides (plastic sliding guides, static pressure guides, and dynamic pressure guides). Plastic sliding rails have the advantages of simple layout, convenient production, and high touch stiffness. However, traditional sliding guides have high conflict resistance, fast wear, and different dynamic and static conflict factors, making them prone to creeping at low speeds.