Research On Log-Core Veneer Lathe Auto Control System

Timber is used widely in the field of wood manufacture recently as the decrease of wood resource. Many large companies are increasing the investment in the field of wood processing. This paper places the emphasis on the research in pleetling processing in plywood processing. Based on the saving and environment protection, log pleetling manufacture is developing with higher plywood board production rate, lower environmental contamination, higher production rate and lower energy consume.According to this development direction stated above, the goal of this paper is to ameliorate the equipment used before by lowing the investment and increasing the rate of wood resource utilization and production rate. The main content of this paper is to do research on log-core veneer lathe auto control system, which is a digital system and gets rid of original mechanical or switch system. Through using an embedded CPU as the central controller, this system can accomplish the original work that is finished by cam and control the motion of pleetling reamer precisely. This manipulator could change processing in running status. Accordingly it improves the control precision and utilization.This dissertation expatiates the working principle of the system and processing method from the following aspects of Log-Core Veneer Lathe: mathematic pleetling model, software and hardware. Firstly, it establishes the mathematic pleetling model, which obtains some important comparison sheets about the relationship between reamer motion speed and log diameter. Secondly, software in this system is programmed by using delamination theory and is divided into three levels: application level, equipment level and driver level. Based on these comparison sheets, I wrote the controlling program of the system, which can achieve the input, display and output of the system with the main controller, peripheral chip, and driver equipment. Thirdly, the hardware includes three parts: controlling board, reamer motion electromotor equipment and feedback measure equipment. The controlling board is the core of this system, which plays an important part in the pleetling model and is expatiated in detail.This dissertation is a new scheme in controlling system of Log-Core Veneer Lathe and is considered as a new method in equipment improvement.