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林业科学 ›› 2025, Vol. 61 ›› Issue (3): 182-188.doi: 10.11707/j.1001-7488.LYKX20240255

• 研究论文 • 上一篇    下一篇

木丝杆单元加工成形方法研究与实现

门全胜,刘达列*()   

  1. 浙江农林大学光机电工程学院 杭州 311300
  • 收稿日期:2024-05-09 出版日期:2025-03-25 发布日期:2025-03-27
  • 通讯作者: 刘达列 E-mail:1270666030@qq.com
  • 基金资助:
    浙江省公益技术应用研究项目(2017C32073)。

Research and Implementation of Shaping Methods of Wood Rod Lumber Units

Quansheng Men,Dalie Liu*()   

  1. College of Optical, Mechanical and Electrical Engineering, Zhejiang Agriculture and Forestry University Hangzhou 311300
  • Received:2024-05-09 Online:2025-03-25 Published:2025-03-27
  • Contact: Dalie Liu E-mail:1270666030@qq.com

摘要:

目的: 提出一种立体网格式循序解剖法,改进现有人造板等木质重组类材料组成单元共同缺陷,为木材加工、人造板单元制备提供新的理论方法以及新型木质重组材料研发提供基础原料。方法: 基于木材显微构造主要特征,按照原木立体网格设立以及原木纵向先划切后刨切的技术方案,结合组合刀具结构设计与刀具各零件及其结构的功能作用,阐述木丝杆单元加工成形过程。以小径木为研究对象,建立小径木立体网格三维直角坐标系,进行刀具切削主运动和木段进料进给运动设计;结合小径木加工区域划分与组合刀具在传输链上的布局以及与小径木加工区域的对应分配,提出一种新型人造板单元制备方法——立体网格式循序解剖法。分析立体网格式循序解剖法刀具与木料在速度、时间、距离三者之间的关系,推导主运动和进给运动运动速度关系式。依据立体网格式循序解剖法,应用研制的木丝杆单元加工试验机进行加工试验验证。结果: 主运动和进给运动运动速度关系式为v=[(N×H)/SV N为每个加工区域组合刀具数量,S为传输链周长);主运动速度V=2.49 m·s?1、进给运动速度v=0.00530.0057 m·s?1,可成功实现木丝杆单元连续自动加工成形,单元互相不黏连、无损伤、形态相同,尺寸为长(L)×宽(B)×高(H)=90.0 mm×1.5 mm×(1.1~1.5) mm。结论: 1) 首创性提出一种新型人造板单元制备方法——立体网格式循序解剖法,具有技术可行性;2) 主运动和进给运动运动速度关系式为v=[(N×H)/SV,为单元加工试验和选择单元制备机的相关运动参数提供理论计算依据;3) 验证主运动和进给运动运动速度关系式的合理性;木丝杆单元高度(或厚度)(H)取决于主运动和进给运动传动系统及其运动速度配比,木丝杆长度(L)等于原木截取长度,宽度(B)由组合刀具决定。

关键词: 木丝杆单元, 加工成形, 立体网格式循序解剖法

Abstract:

Objective: A three-dimensional grid format sequential dissection method is proposed to improve common defects of existing wood-based reconstituted materials such as wood-based panels. This method offers a new theoretical approach for wood processing and unit preparation in engineered wood and provides a foundational raw material for the development of novel wood-based reconstituted materials. Method: Based on the main characteristics of wood microscopic structure, a technical approach is established involving the setup of a three-dimensional grid of logs, followed by longitudinal scoring and slicing. This process, combined with the design of composite tool structures and the functional roles of various tool components, explains the forming process of wood rod lumber units. Taking small-diameter wood as the research object, a three-dimensional rectangular coordinate system in a stereoscopic grid is established for the wood. The main cutting motion of the tool and the feeding motion of the wood segments are designed accordingly; combined with the division of the small-diameter wood processing area and the layout of the combined cutting tools on the transfer chain and the corresponding allocation of the small-diameter wood processing area, a new method for preparing wood-based panel units is proposed, namely the three-dimensional grid format sequential dissection method. The relationship between the cutting tool and the wood in the three aspects of speed, time and distance in the three-dimensional grid format sequential dissection method is analyzed, and the speed relationship formula for the main cutting motion and the feed motion is derived. Based on the three-dimensional grid format sequential dissection method, an experimental machine for processing wood rod lumber units is developed and processing experiments are conducted for verification. Result: The relationship between the speed of the main motion and the feed motion is v=[(N×H)/SV (where N is the number of combined cutting tools in each processing area and S is the circumference of the transmission chain); The main motion speed is V=2.49 m·s?1, and the feed motion speed is v=0.0053 m·s?1 or 0.0057 m·s?1, successfully achieving continuous automatic processing and forming of wood rod units. The produced wood rod units are non adhesive, undamaged, and have the same shape, with dimensions of length (L) ×width (B)×height (H) = 90.0 mm×1.5 mm×(1.1?1.5) mm. Conclusion: 1) A novel method for preparing engineered wood units, namely the three-dimensional grid format sequential dissection method, is originally proposed, demonstrating technical feasibility. 2) The speed relationship formula for the main cutting motion and feed motion is given by v=[(N×H)/SV. This formula provides a theoretical basis for calculating the relevant motion parameters in unit processing experiments and for selecting equipment for unit preparation. 3) The validity of the speed relationship formula for the main cutting motion and feed motion is confirmed. The height (or thickness) (H) of the wood rod lumber units depends on the transmission system of the main and feed motions and their speed ratios. The length (L) of wood rod lumber units is equal to the length of the log segment, and the width (B) is determined by the combined cutting tools.

Key words: wood rod lumber unit, process forming, three-dimensional grid format sequential dissection method

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