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本文用不同的磨削参数(砂轮修整次数、砂轮直径与工件孔径之比d砂/D工孔、进刀量和工件转速)对内螺纹磨削烧伤和裂纹的倾向进行了试验。试验表明,随着砂轮修整次数减少,进刀量和d砂/D工孔增大,磨削烧伤和裂纹的倾向增大。在每磨一刀修一次砂轮的情况下,当径向进刀量不超过0.20毫米时没有产生磨削烧伤:在每进两次刀修一次砂轮的情况下,当进刀量为0.13毫米,d砂/D工孔为0.85时产生了磨削烧伤;在每进三次刀修一次砂轮的情况下,当进刀量为0.10毫米,d砂/D工孔为0.83以及进刀量为0.15毫米,d砂/D工孔为0.67时均产生了磨削烧伤;工件转速在2～4转/分之间变动对是否产生磨削烧伤影响不大。
In this paper, different grinding parameters (number of wheel dressing, ratio of wheel diameter to workpiece hole diameter d sand / D hole, feed rate and workpiece rotation speed) were used to test the tendency of internal thread grinding burns and cracks. Tests showed that as the number of wheel dressing reduced, the amount of feed and d sand / D hole increases, the tendency to burn burns and cracks increase. In the case of a grinding wheel per grinding, no grinding burn occurs when the radial infeed does not exceed 0.20 mm: in the case of a grinding wheel with two knives, when the infeed amount is 0.13 mm, d Sand / D hole was 0.85 produced a grinding burn; in the case of three times a knife repair wheel, when the amount of feed is 0.10 mm, d sand / D hole is 0.83 and the amount of feed is 0.15 mm, d sand / D hole is 0.67 when the grinding burns have occurred; workpiece speed in the 2 ~ 4 rev / min between the changes on whether there is little impact on grinding burns.