目的 针对竹材初加工设备相对落后、 自动化程度低的问题， 基于竹材四面铣削三面剖分加工工艺， 用数控技术提高其自动化程度。方法 给出了实现竹材四面铣削三面剖分加工工艺的整机结构； 根据竹材四面铣削三面剖分加工方式， 利用PLC设计了竹材四面刨床的数控系统。 结果 确定加工竹材的宽度和厚度之后， PLC能进行相应脉冲数量的运算， 得出所要进给的距离； 四面数控刨床具有自动对刀、 独立加工、 单件刨切和统计加工件数等功能。结论 数控化的竹材四面刨床使竹条初加工更加人性化， 提高了竹材初加工的机械自动化程度， 所加工的竹条规格更加统一。

Based on the problem of backward equipment and low automatic control of pretreating of bamboo, this paper proposed to adopt numerical control technology to increase automation based on the processing technique of four-side milling and three-side splitting. This research provided the whole machine structure for four-side milling and three-side splitting of bamboo and designed the numerical control system of four-side planer by PLC according to the technique of four-side milling and three-side splitting. PLC can calculate the corresponding impulse amount to obtain the feed distance after determination of the width and thickness of the bamboo to be processed. The numerically controlled four-side planer possessed functions such as automatic tool-setting, independent processing, single-piece slicing, counting processed pieces and so on. In conclusion, the numerically controlled four-side planer made the pretreating of bamboo more humanized, improved automation of machines and unified the dimension of processed bamboo.