| The roll grinder is an indispensable important equipment in the industry, which grinds all kinds of dished or convex roller. The roll grinder belong to the large-scale and accuracy machine, it is a key equipment for those factories who produce sheet-metal, metallic tape and metallic foil. To produce high quality sheet-metal, metallic tape and metallic foil that greatly depend on high quality roller, but the quality of roller is depend on the accuracy roll grinder. Recently, as the industry of metallurgy, paper-making and printing and dyeing rapidly develop, the requirement of roller grinding technology is more and more high. So, increase grinding accuracy of the roll grinder becoming the key of those industries who produce sheet-metal, metallic tape and metallic foil when they increase the quality of products, production rate and decrease the final cost.The paper is lucubrate in grinding mechanism, including the contact arc length of elastic distortion and grinding wheel in grinding course;the grinding force in grinding course;the grinding heat and grinding temperature in grinding course;the vibration in grinding course;the abrasion of grinding wheel in grinding course;the shaving of grinding wheel in grinding;in the base of grinding fluid, analyzing the factor of influence precision of grinding machining, roughness, remnant stress, burning and crack of grinding exterior and other question of grinding quality. Then in the two upwards tasks base, combining to the work experience of author, and putting forward proper and handy method to improve the quality of grinding of HD400/425 × 20 roll grinder, thereby it can surely achieve to improve the quality of grinding of roll in shot time in make use of roll grinder to grinding and rolling in the future .Experience has approved that through adjusting and improving the style of HD400/425 × 20 roll grinder from Jiu Gang and selecting proper grinding parameter and liquid coolant, the quality of roller has reached international degree.
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