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            模具鋼尺寸與制造公差有什么要求?

            來源:http://www.environmentandpeople.net/ 日期:2021-04-01 發布人:admin


            模具鋼尺寸與制造公差有什么要求?注意模具鋼材料的合理公差和尺寸要求,能給模具制作帶來便利,提高經濟效率,減少制造時的廢品,無論何種材料塑件較高精度尺寸都是有要求的,那么模具鋼尺寸與制造公差有什么要求呢?下面濟南模具鋼小編告訴大家。
            What are the requirements of die steel dimension and manufacturing tolerance? Paying attention to the reasonable tolerance and dimension requirements of die steel materials can bring convenience to die making, improve economic efficiency and reduce waste products during manufacturing. No matter what kind of material, the higher precision dimension of plastic parts is required, so what are the requirements of die steel dimension and manufacturing tolerance? Jinan die steel Xiaobian below to tell you.
            模具鋼的尺寸:
            Dimensions of die steel:
            根據塑料△VS值,將各種塑料的收縮特性分為4個組?!鱒S值小的組是高精度組,以此類推,△VS值的組為低精度組。 并按照基本尺寸編制了精密技術、110、120、130、140、150和160公差組。并規定,用收縮特性最穩定的塑料成形塑件的尺寸公差可選用110、120和130組。用收縮特性中等穩定的塑料成形塑件的尺寸公差選用120、130和140。如果用這類塑料成形塑件的尺寸公差選用110組時,即可能出大量尺寸超差塑件。用收縮特性較差的塑料成形塑件的尺寸公差選用130、140和150組。
            According to the △ vs value of plastics, the shrinkage characteristics of various plastics were divided into four groups. The group with small value of △ vs is high precision group, and so on, the group with low value of △ vs is low precision group. According to the basic dimensions, the tolerance groups of precision technology, 110, 120, 130, 140, 150 and 160 are compiled. It is stipulated that the dimensional tolerances of plastic parts formed with the most stable shrinkage characteristics can be 110, 120 and 130 groups. The dimensional tolerances of plastic parts formed with moderately stable shrinkage characteristics are 120, 130 and 140. If 110 sets of tolerances are selected for forming plastic parts with this kind of plastics, a large number of plastic parts with out of tolerance can be produced. The dimensional tolerances of plastic parts formed by plastics with poor shrinkage characteristics are 130, 140 and 150 groups.
            模具型腔和型芯的加工尺寸除了通過D=M(1+S)公式計算基本尺寸之外,還有一個加工公差的問題。按照慣例,模具的加工公差為塑件公差的1/3。但由於塑料收縮率范圍和穩定性各有差異,首先必須合理化確定不同塑料所成形塑件的尺寸公差。即由收縮率范圍較大或收縮率穩定較差塑料成形塑件的尺寸公差應取得大一些。
            In addition to calculating the basic dimension by D = m (1 + s) formula, there is also the problem of machining tolerance. According to convention, the processing tolerance of the mold is 1 / 3 of the plastic part tolerance. However, due to the differences in the range of shrinkage and stability of plastics, it is necessary to rationally determine the dimensional tolerance of plastic parts formed by different plastics. That is to say, the dimensional tolerance of plastic parts formed by large shrinkage range or poor shrinkage stability should be larger.
            否則就可能出現大量尺寸超差的廢品。為此,各國對塑料件的尺寸公差專門制訂了國家標準或行業標準。中國也曾制訂了部級專業標準。但大都無相應的模具型腔的尺寸公差。德國國家標準中專門制訂了塑件尺寸公差的DIN16901標準及相應的模具型腔尺寸公差的DIN16749標準。此標準在世界上具有較大的影響,因而可供塑料模具行業參考。
            Otherwise, there may be a large number of oversized waste products. For this reason, countries have specially formulated national standards or industry standards for the dimensional tolerance of plastic parts. China has also formulated professional standards at the ministerial level. But most of them have no corresponding dimensional tolerance of die cavity. In German national standard, din16901 standard and din16749 standard of die cavity dimension tolerance are specially formulated. This standard has great influence in the world, so it can be used as a reference for plastic mold industry.
            模具鋼的制造公差:
            Manufacturing tolerance of die steel:
            不論何種材料的塑件,其中不注明尺寸公差尺寸的模具制造公差均使用序號1的公差。具體公差值由基本尺寸范圍確定。不論何種材料塑件中等精度尺寸的模具制造公差為序號2的公差。不論何種材料塑件較高精度尺寸的模具制造公差為序號3的公差。精密技術相應的模具制造公差為序號4的公差。
            No matter what kind of material plastic parts, which do not indicate the size tolerance of the mold manufacturing tolerance are using the number 1 tolerance. The specific tolerance value is determined by the basic dimension range. No matter what kind of material, the mold manufacturing tolerance of medium precision size of plastic parts is the tolerance of serial number 2. No matter what kind of material, the mold manufacturing tolerance of higher precision dimension is the tolerance of serial number 3. The manufacturing tolerance of precision technology is the tolerance of serial number 4.
            綜上所述,模具鋼尺寸與制造公差是由基本尺寸范圍確定,合理的確定各種模具鋼材料的尺寸與制造公差是非常重要的。以上就是關于模具鋼的內容,相信大家已有所了解,更多相關內容可以閱讀http://www.environmentandpeople.net
            To sum up, the size and manufacturing tolerance of die steel are determined by the basic size range. It is very important to determine the size and manufacturing tolerance of various die steel materials reasonably. The above is about the content of die steel, I believe you have some understanding, more related content can be read http://www.environmentandpeople.net

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