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无刃铰刀主要用于加工一些精度要求较高的孔。它具有制造简单,造价低廉,操作方便,不要求特殊精度的机床等优点,一直为机械制造行业广泛使用。它的加工原理是对被加工孔表面进行一次冷挤压光,使其能够获得较高的表面光洁度和几何精度。无刃铰刀是在最后工序使用,所以,在进行终加工前应具备以下基本条件:1)对预制孔必须进行一次半精铰;其表面光洁度应达到▽5～▽6.2)对加工余量要严格控制,根据零件的材质和孔径决定。3)因切削力较大,刀柄要具有一定的刚性。4)零件孔与刀具的同轴度要求一致。5)更重要的一点是,铰刀齿形刃带几何形状的设计要合理,否则,会出现一些意想不到的问题和障碍。
Bladeless reamer is mainly used for machining some holes with high precision requirements. It has the advantages of simple manufacturing, low cost, easy operation, does not require special precision machine tools, has been widely used in the machinery manufacturing industry. Its working principle is to cold-press the surface of the hole to be machined so that it can obtain high surface finish and geometric accuracy. Bladeless reamer is used in the final process, so, before the final processing should have the following basic conditions: 1) prefabricated hole must be a semi-fine hinge; the surface finish should reach ▽ 5 ~ ▽ 6.2) For the machining allowance To be strictly controlled, according to the parts of the material and aperture decision. 3) Due to the larger cutting force, the handle must have a certain rigidity. 4) Parts hole and tool concentricity requirements. 5) More importantly, reamer geometry design should be reasonable, otherwise unexpected problems and obstacles may occur.