钉板小孔高效钻孔夹具是用于加工YJ-14型钉板（见图1）。该件加工的难点在于要在R186．5mm的圆弧面上加工与轴线成50°夹角Φ1．4的小孔，孔的粗糙度为Raf．6μm，孔距为6±0．05，12行共1184个孔。最初采用钻模加工，由于没有定位装置，钻头不易对准钻套扎，经常发生钻头折断 Nail plate holes Efficient drilling fixture is used to process YJ-14 type nail plate (see Figure 1). The difficulty of this piece of processing is to process the circular surface of R186.5mm with the axis of 50 ° angle φ1.4 holes, the hole roughness Raf. 6μm, the pitch is 6 ± 0.05, a total of 1184 holes in 12 rows. Initially used to drill processing, because there is no positioning device, the drill bit is not easy alignment drill ligation, drill bit often occurs broken