Thickness control of veneer rotary cutting machine
In the wood processing industry, veneer peeling machines are important production equipment, and the precise control of their rotary cutting thickness directly affects the quality of products and the utilization rate of wood. With the continuous advancement of technology and the increasing awareness of environmental protection, how to improve the rotary cutting accuracy of veneer peeling machines, especially the uniformity of thickness, has become a common focus of attention both inside and outside the industry.
1、 Basic principle of cardless rotary cutting machine
Traditional veneer rotary cutting machines often adopt a card shaft design. Due to the presence of card cores, the rotary cutting of small-diameter wood is limited, and the remaining diameter of the wood core is relatively large, resulting in waste of wood resources. In order to overcome this deficiency, the cardless rotary cutting machine has emerged. The cardless rotary cutting machine removes the card core and uses hydraulic or pneumatic systems to control the feed of the cutting table, achieving continuous rotary cutting of wood and greatly improving the utilization rate of wood. However, during the rotary cutting process of the cardless rotary cutting machine, the thickness control of the veneer becomes a major challenge due to factors such as the continuous changes in the diameter of the wood segment and the variation in the back angle.
2、 The main factors affecting the thickness of rotary cutting
Pressure regulation: The cutting thickness of the rotary cutting machine is directly related to the pressure. Too low pressure can lead to incomplete cutting, while too high pressure may damage the tool or affect cutting quality. Therefore, reasonable adjustment of pressure is the key to controlling the thickness of rotary cutting.
Sharpness of cutting tools: Sharp cutting tools can better cut materials, reduce resistance during the cutting process, and help maintain uniformity in thickness. On the contrary, passivated cutting tools will increase the difficulty of cutting and result in uneven thickness.
Feeding speed: The speed of feeding also directly affects the thickness of rotary cutting. When cutting thick materials, the feeding speed should be appropriately slowed down to ensure cutting quality; On the contrary, the feeding speed can be appropriately increased to improve production efficiency. Raw material quality: The quality of raw materials also has a significant impact on the thickness of rotary cutting. Wood with uneven texture and high moisture content is prone to thickness deviation during rotary cutting.
Environmental temperature and humidity: The humidity and temperature of the environment can also affect the hardness and degree of deformation of wood, thereby affecting the thickness of rotary cutting. Therefore, it is necessary to ensure stable environmental temperature and humidity before rotary cutting, and adjust according to the actual situation.
3、 Control strategy for rotary cutting thickness
Application of mathematical models: In response to the difficulty of controlling the thickness of rotary cutting in cardless rotary cutting machines, researchers have derived a mathematical model of a variable speed feed system through in-depth research on rotary cutting principles and curves. This model can automatically adjust the feed speed of the cutting machine according to the diameter and material characteristics of different wood segments to ensure uniform thickness of the veneer produced by rotary cutting. At the same time, when rotary cutting thick veneers, it is necessary to modify the model to reduce thickness deviation.
Intelligent control system: With the continuous development of intelligent technology, it has become possible to introduce intelligent control systems into veneer spinning machines. By integrating sensors, data acquisition systems, and intelligent algorithms, real-time monitoring and dynamic adjustment of the rotary cutting process can be achieved. For example, based on real-time monitoring of wood segment diameter and cutting thickness data, the intelligent control system can automatically adjust parameters such as pressure, feeding speed, and tool position to achieve the best rotary cutting effect. Refined tool management: As the core component of the rotary cutting machine, the status of the tool directly affects the quality of rotary cutting. Therefore, it is necessary to establish a refined tool management system and regularly inspect, grind, and replace tools. At the same time, suitable types and specifications of cutting tools should be selected based on the characteristics and rotary cutting requirements of different woods.
Optimize raw material processing: Conduct strict quality inspections before storing raw materials to ensure uniform texture and moderate moisture content of the wood. Before rotary cutting, it is necessary to perform necessary pretreatment on the wood, such as drying, peeling, etc., to reduce thickness deviation during the rotary cutting process.
Strengthening employee training: The skill level of operators also has a significant impact on the quality of rotary cutting. Therefore, it is necessary to strengthen the training and management of operators, improve their understanding and execution ability of the principles, operating standards, and quality control requirements of rotary cutting machines.
The control of the thickness of veneer rotary cutting machine is a complex and delicate process involving multiple factors and links. By comprehensively utilizing mathematical models, intelligent control systems, refined tool management, optimizing raw material processing, and strengthening employee training, the uniformity and stability of rotary cutting thickness can be significantly improved, thereby enhancing product quality and wood utilization. In the future, with the continuous advancement of technology and the sustained development of the industry, the control technology for the thickness of veneer rotary cutting machines will continue to be improved and innovated.
