摘要：【中文】本发明一种深孔加工用超长硬质合金深孔麻花钻，包括同轴设置的柄部和刃部，刃部上沿中轴线设置两条螺旋形的排屑槽，通过两条排屑槽形成背部，刃部上面设有支撑面，支撑面为钻孔导向，支撑面上设有U形冷却槽，刃部左侧设有顶角，为切削刃，切削刃上设有横刃、副刃和主刃，主刃和副刃相交处圆弧过渡形成过渡刃，副刃、过渡刃和主刃顺次相连并形成连续的切削刃，两条连续的切削刃以中心十字线对称分布且二者之间通过横刃连接。本发明提供的超长硬质合金深孔麻花钻，针对性设计了钻头的支撑面、排屑槽的螺旋角、槽形、芯厚、切削刃口的圆弧过渡形状，保证了钻头刚性、排屑性能及刃口强的完美统一，精度提高了100％，刀具寿命提高了8～20倍。 【EN】The invention relates to an ultra-long hard alloy deep hole twist drill for deep hole processing, which comprises a handle part and a blade part which are coaxially arranged, wherein two spiral chip grooves are arranged on the blade part along a central axis, a back part is formed by the two chip grooves, a supporting surface is arranged on the blade part and is used for guiding drilling, a U-shaped cooling groove is arranged on the supporting surface, a vertex angle is arranged on the left side of the blade part and is a cutting edge, a cross edge, an auxiliary edge and a main edge are arranged on the cutting edge, an arc transition at the intersection of the main edge and the auxiliary edge forms a transition edge, the auxiliary edge, the transition edge and the main edge are sequentially connected to form a continuous cutting edge, and the two continuous cutting edges are symmetrically distributed by a central. The ultra-long hard alloy deep hole twist drill provided by the invention designs the spiral angle of the supporting surface and the chip removal groove of the drill bit, the groove shape, the core thickness and the arc transition shape of the cutting edge in a targeted manner, thereby ensuring the perfect unification of the rigidity, the chip removal performance and the cutting edge strength of the drill bit, improving the precision by 100 percent and prolonging the service life of the cutter by 8-20 times.

摘要：【中文】本发明公开了一种氧化锆陶瓷平头立铣刀，由氧化锆陶瓷磨削制成，包括由右至左依次连接的导向部、用于刀具与刀柄安装的柄部、避空和切削刃部，切削刃部包括若干螺旋后刀面和螺旋刀刃，相互之间通过螺旋槽连接，切削刃部端部且与螺旋刀刃位置对应处设有端刃，端刃处设有0°凹角的修光刃，平头立铣刀的周刃前角为2～6°，周刃后角为10～20°的圆弧后角，芯厚比例为刃径的80％。本发明提供的氧化锆陶瓷平头立铣刀，小前角、大芯厚，设有修光刃，氧化锆陶瓷具有更低的化学亲和力，在高速加工石墨材料时，氧化锆陶瓷平头立铣刀更难发生氧化和扩散磨损，刃口锋利光滑，刀具寿命更高，可以保证产品的加工精度。 【EN】The invention discloses a zirconia ceramic flat-end mill which is made by grinding zirconia ceramic and comprises a guide part, a handle part, a clearance and a cutting edge part, wherein the guide part, the handle part, the clearance and the cutting edge part are sequentially connected from right to left, the handle part is used for installing a cutter and a cutter handle, the cutting edge part comprises a plurality of spiral rear cutter faces and spiral blades, the spiral blades are connected with each other through spiral grooves, an end blade is arranged at the end part of the cutting edge part and corresponds to the spiral blade, a polishing blade with a 0-degree concave angle is arranged at the end blade, the front angle of the peripheral blade of the flat-end mill is 2-6 degrees, the rear angle of the peripheral blade is an arc rear angle. The zirconia ceramic flat-end mill provided by the invention has the advantages that the small front angle, the large core thickness and the flat edge are provided, the zirconia ceramic has lower chemical affinity, the zirconia ceramic flat-end mill is more difficult to oxidize and diffuse and wear when a graphite material is processed at a high speed, the cutting edge is sharp and smooth, the service life of the cutter is longer, and the processing precision of a product can be ensured.