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过去我厂在制作水泵工作轮模具时,其叶片模型大部分采用金属材料。金属叶片模型与木制叶片模型相比,虽有形状较稳定、光洁度高、经久耐用等优点,但也存在着耗费工时多、难于成形等缺点。对较大的叶片来说,这类缺点显得尤为突出。从1965年起我厂采用塑料叶片模型,现将其制作过程简单介绍如下。一、制作塑料叶片模型前的准备工作制作叶片模型以前多采用剪裁法。目前我厂采用轴面截线样板法(或称径向样板法)制作叶片模型。即以一些轴面(通过轴心线的平
In the past I plant production pump working wheel mold, the blade model most of the metal material. Compared with the wooden blade model, the metal blade model has the advantages of relatively stable shape, high finish and durability, but also has the disadvantages of long working hours and difficult forming. For larger blades, these shortcomings are particularly prominent. Since 1965 I plant the plastic blade model, now its production process is as follows. First, the preparation of the plastic leaf model preparation Before making the leaf model using more clipping method. At present, I plant the use of axial cross-section model method (or radial model method) to make the blade model. That is, with some axis (through the axis of the flat