Carbon fiber has high strength, corrosion resistance, the advantages of light quality, high modulus carbon fiber helmet in the process of production, surface and tick off seam grain grinding has been using artificial or non-professional machinery, the production efficiency is low, grinding quality, machining grind the time-consuming defect. Using pundit, science and technology of Force Control System can realize flexible grinding grain jointing, improve surface finish and flatness, ensure the quality of grinding and stability.