竹材四面铣削三面剖分加工方式的出材率分析
Outturn Rate of All Side Milling and Three Side Spliting of Bamboo Timber Processing

针对目前市场上竹材资源初加工领域利用率低的问题，提出全新的四面铣削三面剖分的加工方式，提高目前竹材初加工领域竹材的利用率和出材率(即出板率)，实现竹材刨切去青齐边铣削去黄的提质增效的目的，同时获得竹条、细竹条和竹青不同类型的材料。在理想状态下，建立竹材的理想模型，分析利用四面铣削三面剖分加工方式后竹材横截面有效面积，再根据几何体体积之间的关系可计算出竹材的出材率（即出板率）。进行实际的试验测量，按照上述理想状态下竹子的状态计算出通过四面铣削三面剖分加工后各竹子的出材率（出板率）高达92.43%，远远超过目前市场上竹材初加工的出材率，不仅达到竹材刨削去青齐边铣削去黄的提质增效的效果，而且避免竹材资源的浪费。
Aiming to solve the problems of low productivity of bamboo timber processing, a new processing method was developed to improve the bamboo utility and outturn rate of plates. By this method, different bamboo raw products were obtained during removing outer and inner parts to produce high quality bamboo plates. The paper first set up an ideal model of the bamboo, then analyzed the bamboo’s active area of the cross section after treated by the new method, and to calculate the outturn percentage of bamboo (i.e., the output rate of plate). By the new method, the outturn percentage of bamboo was as high as 92.43%, far more than the traditional method