Rotary cutting machine is one of the main equipments for producing plywood. It is divided into card cutting machine and cardless rotary cutting machine. With the advancement of technology, digital servo control technology is also applied to the production of rotary cutting machine. The appearance of CNC rotary cutting machine. The appearance of CNC rotary cutting machine not only improves the quality and precision of the production veneer, but also greatly improves the production efficiency and the automation degree of the whole machine. The CNC cardless rotary cutting machine is a plywood production line or veneer. The important equipment on the production line is mainly used for the re-rotation of the remaining (or round) wood core with the card shaft rotary cutting machine for secondary use, and the wooden segments of different lengths are rotated in a certain diameter range. The veneer is of different thickness and has small diameter. Features: 1. Use servo motor to drive precision screw feed. 2Replace the plate thickness only need to input the plate thickness number, no need to change gears, high precision of rotary cutting. 3 different wood species It can also be rotated together without affecting the thickness of the board. 4 The surface finish is good, and it is not sensitive to the reaction of the yin and yang of the wood. 5 power saving, simple operation and convenient maintenance.
The difference between a planer and a rotary cutter.
The wood planer is the main equipment for the production of veneers and meager wood. According to the direction of movement of the planing knife relative to the horizontal plane, the wood planing machine can be divided into two types: vertical and horizontal; according to the direction of the cutting direction, the machine is divided into vertical or parallel with respect to the length direction of the wood fiber, and the cutting machine can be divided into two. Horizontal planer and longitudinal planer. The modern size of the planer is only 1/3 of that of the previous planer. It is compact in structure, light in weight, easy to install and debug. It can be continuously produced, saves time for loading wood, and has high production efficiency. The work is extremely stable and almost listens. No noise.
The rotary cutter is also one of the main equipment for producing veneers, and in a sense, it is used more widely than the planer. Rotary cutting machine can be divided into two types: concentric rotary cutting and eccentric rotary cutting according to whether the wood segment rotates around its own axis. Concentric rotary cutting machine is divided into two types: card shaft rotary cutting machine and non-card shaft rotary cutting machine. Eccentric rotary cutting can achieve a beautiful radial pattern, but the productivity is lower than concentric rotation.
Rotary cutting machines are generally large in size and complex in structure. Before the machine is installed, the logs are centered. If the centering is not accurate, the intermittent veneer strips or narrow veneers will be unscrewed when the cutting is started. The more broken boards or narrow single boards, the more sapwood boards are lost, which is not conducive to continuous production. The logs are curved, the sections are irregular, and the ends of the ends (tips) are easy to cause the unscrewed veneers to be broken veneers, which wastes wood. And when the diameter of the log is reduced to a certain extent, it can no longer continue to cut (that is, the remaining wood core causes wood waste).
The disadvantage of the planer is that the width of the sliced ​​veneer is narrow, generally 300 rnm has special requirements.
1. Low speed, high torque. Compared with electromagnetic motors, the most notable feature of ultrasonic motors is the characteristic of large torque output at low speeds. The torque density (torque weight ratio) of the ultrasonic motor is 100 to 1000 times the torque density of the electromagnetic motor.
2. The structure is simple and flexible, and the movement forms are diverse. The ultrasonic motor generally consists of two parts: a stator and a rotor (or a moving body), and it is very convenient to integrate the stator and the rotor of the motor with the fixed part and the moving part in the motion system, respectively. Ultrasonic motors are available in a variety of flexible configurations such as rings, discs, squares, cylinders and spheres, and are very easy to implement in many forms of motion, such as rotational motion, linear motion, two-dimensional planar motion, and three-dimensional motion.
3. Life, noise and reliability issues. Since most of the driving of the ultrasonic motor is contact type, this inevitably brings about frictional loss between the stator and the rotor.
At present, the continuous working life of the developed low-power ultrasonic motor is generally several thousand hours. The short life of the ultrasonic motor, poor reliability, and unstable operation are the problems that need to be solved urgently for its practical and industrialization. However, in some occasions with special work properties or special requirements for motors, ultrasonic motors can still give full play to the advantages of high torque density, flexible structure, no electromagnetic interference and large static holding torque. Ultrasonic motors are widely used in aerospace, precision machining equipment, automotive industry, scientific instruments or medical instruments, precision instruments, office automation equipment, micro-machinery, military industry and semiconductor processing industries with strong magnetic fields or magnetic fields. . Left and right or narrower, all need to be spliced, the utilization rate of wood is low, and the productivity of cutting is only about 10% of the rotary cutting; the current cutting machine only cuts the thin wood.
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