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机车柴油机检修,两端固定在两个圆盘的回转台上,圆盘重1.5吨,在φ2037.4圆上均布128个φ30的孔,位置度φ0.1,孔装入销轴,由节距50在链轮传动。需作两套四件。我们用一组简易钻模巧妙地解决孔加工的难题。零件装在有平轴承的回转台上调整同心,这样回转方便,钻轴可不移动,在摇臂钻床或立钻均可。零件中心作定心工艺孔,用以工艺孔插销定位,用两孔钻模钻孔,留铰量0.2～0.3,钻(1)孔后,可钻第(2)孔,将钻模转90°,用孔距为:2037.4/2×sin45°=1440.66的连板与(1)孔插销相连,另端套在钻模钻套台肩上钻第(3)孔,连板移至B位钻第(4)孔,如示意图1的上
Locomotive diesel engine overhaul, fixed at both ends of the rotary table on two discs, the disc weighs 1.5 tons, in the φ2037.4 round uniform 128 φ30 holes, the location of φ0.1, the hole into the pin from Pitch 50 in the sprocket drive. Need to make two sets of four. We use a set of simple drilling mode cleverly solve the problem of hole processing. Parts mounted on a slewing bearing with flat bearings adjust concentric, so slewing convenient, the drilling shaft can not move, drilling or drilling in the radial drilling can be. Part center for the center of the hole technology, technology hole pin positioning, drilling holes with two holes, leaving the hinge amount 0.2 ~ 0.3, drilling (1) hole, you can drill hole (2), the drill 90 °, with a hole pitch of: 2037.4 / 2 × sin45 ° = 1440.66 of the plate and (1) hole pin connected to the other end of the sleeve in the drill sleeve shoulder drill hole (3), the board moved to B Drill the hole (4), as shown in schematic 1