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速度滑冰所用的冰刀要经常研磨,但有时因磨刀方法不当,往往造成冰刀刃形状的异常改变,而不利于活动.现在,在一些学校中所采用的“8字形磨刀法”就是一种应该纠正的磨刀方法.所谓“8字形磨刀法”就是在磨冰刀刃时,磨石在冰刀刃上按“8字形”路线旋转、移动来研磨冰刀的一种方法.其所以不宜采用,理由如下:从实用角度看,正确的速滑冰刀刃外形应是:整个刀刃只有一个弧度,而且弧度应在前、后刀托的中间部分刀刃上,这种弧度有利于滑冰者灵活地控制身体重心,提高蹬冰效果;而在“8字磨刀法”
Ice skates used for speed skating often grind, but sometimes due to improper sharpening methods, often resulting in abnormal changes in the shape of skate blades, but not conducive to activities.Now, in some schools used “8-shaped sharpening method ” is A kind of sharpening method that should be corrected.The so-called “8-shaped sharpening method” is a method for grinding a skate blade by rotating and moving the grinding stone on the blade edge while grinding the blade edge It should not be used for the following reasons: From a practical point of view, the correct speed skating edge shape should be: the entire blade is only one arc, and the arc should be in the front and rear knife care of the middle part of the blade, this curvature is conducive to skating Who flexibly control the body center of gravity, improve the effect of pedal ice; and in the “8-word sharpening method”