斷橋鋁雙頭切割鋸行為誤差對機械產品的工作精度、鏈接強度、運動平穩性、密封性、耐磨性、配合性質以及可裝配性都會產生影響，引起噪聲，縮短雙頭切割鋸的使用壽命，一般來說，可歸納為以下三個方面：
The behavior error of the broken bridge aluminum double head cutting saw will affect the working accuracy, link strength, motion smoothness, sealing, wear resistance, matching property and assemblability of mechanical products, causing noise and shortening the service life of the double head cutting saw, generally speaking, it can be summed up in the following three aspects:
1. 影響斷橋鋁雙頭切割鋸零件的功能要求，例如雙頭鋸導軌表面的直線度、平面度不好，將影響雙頭鋸切割鋸片的運動精度，齒輪箱上個軸承孔的位置誤差，將影響齒輪傳動的齒面接觸精度和齒側間隙，鉆膜、沖模、鍛模等工作表面，其性質誤差則會直接影響其工作精度或被切割型材的幾何精度。
1. the functional requirements of the double head cutting saw parts of the broken bridge, such as the straightness and flatness of the surface of the double head saw, will affect the motion accuracy of the saw blade of the double head saw and the position error of the bearing hole on the gear box, which will affect the contact precision of the tooth surface and the clearance of the tooth side, and the work of the drill film, die, forging die and so on. As for the surface, the quality error will directly affect its working accuracy or the geometric accuracy of the cut profile.

2. 影響斷橋鋁雙頭切割鋸零件的配合性質，形狀誤差會影響零件表面間的配合性質，造成間隙或郭穎不一致。對于間隙配合，局部磨損加快，降低零件的運動精度，縮短零件的工作壽命。對于郭穎配合，影響連接強度。

2. influence the matching properties of the parts of the broken bridge aluminum double head saw, the shape error will affect the matching nature of the parts surface, resulting in gap or Guo Ying disagreement. For clearance fit, local wear is accelerated, the motion accuracy of parts is reduced, and the working life of parts is shortened. For Guo Ying coordination, it affects the strength of the connection.
3. 影響零件的自由裝配性。位置誤差不僅會影響雙頭切割鋸零件表面的配合性質，還會直接影響零、部件的可裝配行。例如，若法蘭端面上空的位置有誤差，就會影響零件的自由裝配性，電子產品中，電路板、芯片的插角位置誤差會影響這些器件在整機上的正確安裝。
3. influence the free assembly of the parts. Position error will not only affect the matching properties of the surface of double headed saw, but also directly affect the assembly line of parts and parts. For example, if the position of the flange face is error, it will affect the free assembly of the parts. In electronic products, the position error of the plug angle of the circuit board and chip will affect the correct installation of these devices on the whole machine.
總之，斷橋鋁雙頭切割鋸零件的形狀和位置誤差對其使用性能的影響不容忽視，為保證產品的質量和零件的互換性，應規定形狀和位置公差，以限制其誤差。
In a word, the influence of the shape and position error of the broken bridge aluminum double head cutting saw can not be ignored. In order to ensure the quality of the product and the interchangeability of the parts, the tolerance of shape and position should be stipulated to limit its error.
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