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机械加工厂,φ25毫米以上的孔径,一般都采用钻、扩粗加工,如齿轮,铣刀,板牙孔等。带孔孔径的扩大,如轴承环,常用镗削加工。与钻扩相比,镗孔可以减少刀具规格。国外,带可转位刀片的双刃可调镗刀,已成商品在市场出售。国内常用的双刃可调镗刀,一般用带焊接刀片的刀头或直接机夹可重磨的刀片。刀具结构各异,各厂自行制造。带可转位刀片的双刃可调镗刀,国内少见,洛阳轴承厂7909锥轴承自动线上曾用过。为了扩大国内现用可转位刀具的品种,简
Machining plants, φ25 mm above the aperture, are generally used drilling, thickening processing, such as gears, milling cutters, Banya hole. Hole diameter expansion, such as bearing rings, boring commonly used. Boring reduces the tool size compared to drilling. Abroad, with adjustable blade adjustable double boring knife, has been sold in the market. Domestic commonly used double-edged adjustable boring knife, generally with the blade with a welding blade or a direct machine can be regrind the blade. Different tool structure, the factory to create their own. Adjustable boring blade with indexable adjustable blade, domestic rare, Luoyang Bearing Factory 7909 tapered roller bearings used on the line. In order to expand the variety of domestic available indexable knives, Jane