经实践检验，本文的刨煤机工况参数优化方法和刨头摩擦力计算方法是切实可行的。

Examined by practice, the method about the working condition parameter optimization for coal plough and the calculation about friction force on plow head are feasible.

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针对这一问题，本文研究了零件加工误差对动模板合模位置的影响，得出了零件加工误差的许用值范围，并计算了由于销轴摩擦力对合模力放大比的影响关系式。

Aiming at these problems, this paper studies how the original error affects the accuracy, works out its allowable values, and finds out the equation between friction of pins and clamping force.

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在大面积的填土地基上做桩基础，桩的负摩擦力的计算是桩基设计中的重要依据。

The calculation of pile negative friction is a important foundation for pile foundation design when pile foundation is in large area filled up ground.

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