本文是国家“863”项目——新型智能伐根清理机器人设计计算的一部分。切削力的大小是计算切削功率、设计切削加上设备和刀具的主要依据。本文根据伐根清理机器人设计的要求。以刀具旋切时的最不利情况——横锯切削为计算切削力的依据。适当选取修正系数计算出伐根机切削力及切削功率。乘以安全系数。以此作为机器人驱动元件——液压马达功率选择的依据。 This article is part of National “863” project - Designing a New Intelligent Cutting Machine. Cutting force is the size of the calculation of cutting power, design cutting plus equipment and tools the main basis. This article according to the root cleaning robot design requirements. The most unfavorable situation when cutting with a cutting tool - saw cutting is the basis for calculating the cutting force. Appropriate selection of the correction factor to calculate the cutting machine cutting force and cutting power. Multiply the safety factor. As a robot drive components - the basis for hydraulic motor power selection.