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摇臂(28011C)是Z30_(32)~(25)×10摇臂钻床上的主要零件。该件上有一φ95H7丝杠孔,孔的端上锪平φ128mm端面,孔与端面的垂直度公差为0.02mm,φ95H7的端面加工很不稳定,80％左右达不到设计要求,检查结果垂直度公差都在0.04～0.06mm之间。由于工件的这项要求不合格,直接影响摇臂升降时噪声大,摇臂升降时产生颤抖,从而影响了原设计的机械性能,对该产品创部优质产品直接受到影响。
Rocker (28011C) is a Z30_ (32) ~ (25) × 10 radial drilling machine on the main parts. The piece has a φ95H7 screw hole, the end of the hole 锪 flat φ128mm end surface, the hole and the end surface of the vertical tolerance of 0.02mm, φ95H7 end surface processing is unstable, about 80% of the design requirements, the test results verticality Tolerances are between 0.04 ~ 0.06mm. Due to the unqualified requirements of the workpiece, it has a direct impact on the noise when the rocker arm is raised and lowered, trembling when the rocker arm is raised and lowered, thus affecting the mechanical properties of the original design and directly affecting the quality product of the product.