我們的注塑模具（jù）在進行加工時，對於模具的（de）精度管（guǎn）理方麵如何能（néng）得到（dào）有效提高。需要我們必須要知道哪些（xiē）問（wèn）題方麵是影響注塑（sù）模具生產加工（gōng）精度的。山東模具製造廠家（jiā）為大家講解（jiě）如下：
How can we effectively improve the precision management of our injection mold during processing. First of all, we must know which problems affect the production and processing accuracy of injection mold. Shandong mold manufacturer explained the following:
1.尺寸精度
1. Dimensional accuracy
指加工後零件的實際工作尺寸與零件進行尺寸的公差的相符（fú）合以及程度。
It refers to the consistency and degree between the actual working dimension of the processed part and the tolerance of the dimension of the part.
尺寸精度由尺寸公差控製。尺寸公差是零件尺（chǐ）寸在（zài）切削加工過程中允許的變（biàn）化（huà）量。在基本尺寸相同的情況下，尺（chǐ）寸公差（chà）越小，尺寸精度越高。
Dimensional accuracy is controlled by dimensional tolerance. Dimensional tolerance is the allowable variation of part size in the process of machining. When the basic dimensions are the same, the smaller the dimensional tolerance, the higher the dimensional accuracy.
2.形狀精度
2. Shape accuracy
指被加工（gōng）零件表麵（miàn）的（de）實（shí）際幾何形狀與（yǔ）理想（xiǎng）幾何形狀的重合程度。評定形狀精（jīng）度有6項，如直線度、平麵度、圓度、圓柱（zhù）度和線輪（lún）廓。形狀精（jīng）度（dù）由形（xíng）狀（zhuàng）公差控製（zhì）。除圓度和圓柱（zhù）度外（wài），所有形狀公差（chà）都分為12個精度等級。1級高，12級低。
It refers to the coincidence degree between the actual geometry and the ideal geometry of the machined part surface. There are 6 items to evalsuate the shape accuracy, such as straightness, flatness, roundness, cylindricity and line contour. Shape accuracy is controlled by shape tolerance. Except roundness and cylindricity, all shape tolerances are divided into 12 accuracy levels. Level 1 high, level 12 low.
3.位置精度
3. Position accuracy
指加工後零件進行有關研究表麵企業之間的（de）實際工作位置以（yǐ）及精度差別。評定（dìng）一個位置信息精度的項目有平（píng）行度、垂（chuí）直（zhí）度、傾斜度、同軸度（dù）、對稱度（dù）、位置度、圓跳動和全跳動等八項（xiàng）。位置定位精度是用（yòng）位置公差來控製的，各項活動目（mù）的不同位置公（gōng）差亦分（fèn）為12個精度評價等級。
It refers to the actual working position and accuracy difference between enterprises after relevant research on machined parts. There are eight items to evalsuate the accuracy of a position information, such as parallelism, perpendicularity, inclination, coaxiality, symmetry, position, circular runout and total runout. Positional positioning accuracy is controlled by positional tolerance. For different purposes of various activities, positional tolerance is also divided into 12 accuracy evalsuation grades.
通（tōng）常在（zài）設計機械零件和確定加工精（jīng）度時，應注意控製（zhì）位置公差中（zhōng）的形狀誤差，位置誤（wù）差應小（xiǎo）於（yú）尺寸（cùn）公差。
Generally, when designing mechanical parts and determining machining accuracy, attention should be paid to controlling the shape error in the positional tolerance, and the positional error should be less than the dimensional tolerance.
