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一、概述小电机(JO_29~#以下)机座是机械产品中较难于铸造的铸件之一。难点在于带有辐射状的、薄、高而且密的散热片;铸件高度与最大宽度相近,型腔较深。造成砂型难于紧实,起模过程中片间砂柱容易产生裂纹。基于上述原因,所以尽管机座量较大,但国内仍大量采用手工造型。这样,既难满足产量上的要求,又难保证铸件质量,劳动强度大、条件差,使小电机机座铸件的生产成了电机生产中的薄弱环节。小电机机座机器造型,国外有一些经验可资借鉴,国内也有一些高压造型线、有箱射压造型线、震压造型线在运转(主要用于5~#以下机座)。但是无论是国内还是国外,小电机机座造型线都比较复
First, an overview Small motor (JO_29 ~ # the following) base is a mechanical product more difficult to cast one of the castings. Difficulties is with a radial, thin, high and dense heat sink; casting height and width of the maximum width, deep cavity. Resulting in the sand is difficult to compaction, during the ejection process sand column prone to cracks. Based on the above reasons, so a large amount of seats, but still a large number of manual modeling. In this way, it is difficult to meet the production requirements, but also difficult to guarantee the quality of castings, labor-intensive, poor conditions, so that the production of small motor frame castings has become a weak link in the production of electrical machinery. Small motor frame machine modeling, some foreign experience can be used for reference, there are some domestic high-pressure molding line, a box injection molding line, shock molding line in operation (mainly for 5 ~ # below the base). However, whether domestic or foreign, small motor base modeling lines are more complex