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目前,国内外测定大型轴承套圈端面硬度均采用手携式轻负荷硬度计,洛维两用(下称洛维)硬度计也经常采用。洛维硬度计负荷有98N,压头可前后移动10mm,不需要移动工件和硬度计便可测定出多个硬度值。这种硬度计采用588N吸力的磁性座将硬度计吸附在工件表面上测定硬度,磁性座的底面积为100mm×10Omm,其缺点是往往由于大型轴承套圈壁厚小于100mm,且套圈为圆形体,因而硬度计实际吸附的有效面积较小,吸附能力低,这给测定大型套圈端面硬度值带来困难。为此,我们设计了如图所示的龙门支架。硬度计吸附在
At present, the determination of large bearing ring both at home and abroad face hardness are hand-held light load hardness, low-dimensional dual-use (hereinafter referred to as Lowe) hardness is often used. Lowe hardness tester load 98N, head can be moved back and forth 10mm, do not need to move the workpiece and hardness can be measured more than one hardness value. The hardness of the magnetometer with 588N suction magnetic hardness adsorption on the workpiece surface hardness, magnetic base area of 100mm × 10Omm, the drawback is often due to the large bearing ring wall thickness of less than 100mm, and the ring is round Shape, so the hardness of the actual effective adsorption area smaller, low adsorption capacity, which for the determination of large-scale ferrule end hardness value difficult. To this end, we designed the gantry bracket as shown. Hardness in the adsorption