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在铸造生产中,模板造型时,尤其在手工造型中极易产生错箱,造成废品。通常在模板造型中采用靠箱锥法、定位销法等方法定位,其缺点是: 1.由于砂箱经常受到热应力的作用,砂箱使用一段时间后,在热应力的作用下产生变形,使靠箱锥、定位销孔失去了准确定位的作用,从而导致错箱的发生; 2.合箱后不能检验,是否错箱很难发现,无法保证合箱的准确性; 3.在某些生产过程中,合箱是准确的,但在上箱卡时砂箱受力而错动导致错箱。为了解决这个问题,通过实践总结了型孔定位
Casting in the production, the template modeling, especially in the manual modeling can easily produce the wrong box, resulting in waste. Usually used in the template modeling by the box cone method, positioning pin method and other methods of positioning, the disadvantages are: 1. As the flask often by the role of thermal stress, the flask after use for a period of time, under the effect of thermal stress deformation, So that by the box cones, positioning pin hole lost the role of accurate positioning, resulting in the occurrence of the wrong box; 2. can not be checked after the box, the wrong box is difficult to find, can not guarantee the accuracy of the box; 3. In some The production process, the box is accurate, but in the box on the sand box forced by the force and error caused by the wrong box. In order to solve this problem, the hole positioning has been summarized through practice