Solution to uneven thickness of rotary-cut veneer
To address the issue of uneven thickness of rotary-cut veneer, systematic investigation and adjustment are needed in terms of equipment, raw materials, processes, and management. The causes are complex and often result from the combined effects of multiple factors.
Equipment accuracy is the fundamental guarantee. It is essential to regularly inspect and precisely calibrate the spindle, tool post, and drive system of the rotary cutter to ensure smooth and vibration-free operation of the equipment. The installation angle, height, and grinding quality of the rotary cutter blade are crucial. A sharp blade and correct installation can significantly improve the cutting condition. Additionally, the concentricity and clamping force of the spindle must be uniform to prevent the wood block from jumping or deviating during rotation.
Raw material processing is a crucial prerequisite. The steaming and boiling process of wood sections needs to be scientific and reasonable to ensure uniform temperature and softening degree of the wood core and surface. Excessive or insufficient softening will lead to changes in cutting resistance, causing thickness fluctuations. In addition, the shape of the wood sections should be as regular as possible. For logs with large curvature, necessary cutting or surface finishing should be carried out to reduce vibration and impact during rotary cutting.
The refined control of operational processes directly affects the uniformity of the finished product. It is necessary to precisely set and adjust in real-time the nominal thickness of the veneer, the coordination ratio of the main and auxiliary movements, and the relative position of the pressure bar, based on different tree species, diameters, and softening conditions. Maintain the stability of process parameters during the peeling process and avoid unnecessary mid-way adjustments.
A rigorous process monitoring and maintenance system must be established. Operators need to regularly measure the thickness of veneers and record the data to promptly identify any deviation trends. Only through systematic equipment inspections, standardized raw material processing, and consistent process execution can we consistently produce high-quality veneers with uniform thickness.
