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看了《机械制造》1990年第12期中的“密封圈切割工具”一文后,谈些自己的看法。前文介绍的工具在切割前,先须把垫片材料用钉固定在一平整的木板上,这样比较麻烦,且经几次用后,平整的木板就被钉和刀片划得不平整了,而且在切割过程中,木板必须固定不动,否则割刀一旦转了几圈后仍不能割下垫片而移动了圆心,要第二次重新找准圆心就十分困难。另外,前文的两刀片长短调节比较麻烦,如调得不好就会造成一把刀片尚未割穿垫片,另一把刀片却已较深地切入平整的木板。现介绍一种我们在使用中的切割工具,如图,装在台钻上使用,并在台钻台面上放一块厚度5mm以上的橡皮板,一是为保护刀尖,二是为在顶尖5压下时使垫片材料与橡皮之间产生较大的摩擦力,免使垫
After reading the article entitled “Sealing Tools for Cutting Rings” in “Machinery Manufacturing”, No. 12, 1990, talk about my own views. The tool introduced in the previous paragraph before cutting, the gasket material must be fixed on a flat wooden board, this is more troublesome, and after several use, the flat wood was nailed and blade planted uneven, and In the cutting process, the plank must be fixed, or the cutter after turning a few times still can not cut off the gasket and moved the center of the circle, to find the center of the second re-find it very difficult. In addition, the previous two blade length adjustment is too much trouble, such as poorly adjusted will result in a blade has not yet cut through the gasket, the other blade has been cut deeper into the flat wood. Now we introduce a cutting tool in use, as shown, mounted on bench drill use, and bench top put a piece of thickness 5mm above the rubber plate, one for the protection of the tip, and the other for the top 5 When pressed to make gasket material and rubber between the larger friction, so as not to pad