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一般空气压缩机、氧气压缩机等机组中的冷却器的上、下管板采用胀管式结构较多,即上、下管板内孔开槽,如图1所示的空气压缩机管板图。因管板孔数较多,如在一般摇臂钻上用普通刀排加工内孔槽,不仅生产效率很低,且装刀、对刀、进刀较难控制。因此,设计了专用切槽刀排。一、结构原理管板切槽刀排如图2所示。其结构及工作原理:序号10内螺旋体铣有12_(D4)×30°右螺旋槽(图3),序号14外螺旋体铣有12_(D4)×45°左螺旋槽(图4),其内孔与内螺旋体外圆配合,配合公差选择φ34d_c/D_3,并内孔与外圆偏心。偏心距为0.80毫米。当序号1刀排体装入摇臂钻床主轴孔转动时,通过序号10导向螺钉带动序号14外螺旋体与序号10内螺旋体回转,因外
General air compressors, oxygen compressors and other units in the cooler upper and lower tube plate expanded structure with more, that is, the lower tube plate slotted slots, as shown in Figure 1, the air compressor tube plate Figure Due to the large number of tube plate holes, such as the general rocker drill with a common row of internal slot processing groove, not only low production efficiency, and set the knife, the knife, the more difficult to control the feed. Therefore, designed a special grooving knife row. First, the structural principle Tube cutting slot knife shown in Figure 2. Its structure and working principle: No. 10 internal spiral milling 12_ (D4) × 30 ° right spiral groove (Figure 3), No. 14 external spiral milling 12_ (D4) × 45 ° left spiral groove (Figure 4) Hole and internal spiral body with the outer circle, with the choice of tolerance φ34d_c / D_3, and the eccentric hole and the outer circle. Eccentricity is 0.80 mm. When the serial number 1 knife body into the radial bore of the radial drilling machine drilling, driven by the serial number 10 guide screw No. 14 spiral and No. 10 spiral body rotation, because