At present, in the process of veneer production, multi-layer board manufacturers adopt the traditional centering round wood rotary cutter for processing. This processing method has high precision and good quality. However, due to the existence of the core, when the diameter of the rotary cutting log is about 200 mm, it can not be processed on the rotary cutting machine with clamping; and when the diameter of the log is small, the rigidity of the log decreases and the quality of the rotary veneer is poor. At this time, if the remaining wood core is discarded or processed into a wood core board, it will cause a great waste of raw materials, thus increasing the production cost of veneer. As a result, the manufacturers generally use the non card round wood rotary cutting machine to cut the remaining wood core again, making full use of the raw materials.

The schematic diagram of the working principle of the card free rotary cutting machine is as follows: the log rotates under the joint driving of two fixed rollers with two rotating centers and one moving roller of one rotating center, and the rotary cutting power is generated. The center support of the dynamic drive roller and the rotary cutter are relatively fixed and move together. In this way, the veneer is planed out from the log by the rotary cutter. The thickness of the veneer is controlled by the clearance between the dynamic roller and the rotary cutter edge and the moving speed of the rotary cutter. The clearance between the rotary roller and the rotary cutting blade is relatively fixed, which is adjusted by the knife edge clearance adjustment device of the machine tool, depending on the thickness of the rotary cutting plate, and the moving speed of the rotary cutter is controlled by the speed of the driving motor through the control system. Therefore, the moving speed of the rotary cutter also indirectly determines the thickness of the veneer. It can be seen from the above that the rotation speed of the driving roller is constant, that is, the linear speed of the log rotation is constant. With the change of the diameter of the log, the angular velocity of the log changes, that is, the time required for the log to rotate once also changes, Therefore, the moving speed of the rotary cutter is a variable value, which is a nonlinear relationship. The control of traditional log centerless rotary cutting machine mainly adopts 2T series electromagnetic governor frequency conversion speed regulation method. The speed of the motor is changed by manually adjusting the rotary twist or adjusting the input voltage of the controller by cam curve adjustment. The thickness error of this method is as much as 1 mm. Therefore, it is very important to design a set of system which can accurately control the moving speed of rotary cutter to control the thickness of rotary cutting plate. The basic idea of system design is as follows

(1) The mathematical model is accurate;

(2) Take over the original speed control system to achieve accurate speed control.

Rotary cutting machine is one of the main equipment for plywood production. With the development of science, the emergence of CNC rotary cutting machine greatly improves the work efficiency. The following small series mainly introduces the eight features of CNC rotary cutting machine:

1. Frequency conversion microcomputer control, man-machine interface, rocker operation mode, simple and convenient.

2. The veneer has high precision and fast cutting speed.

3. The thickness of veneer is 1.0 ~ 3.6mm.

4. Automatic adjustment of the cutter gate makes the rotary cutting process from large diameter to small diameter more reasonable.

5. Adopt swallow tail slide way and lead screw feed mode.

6. The wire mother is made of high wear-resistant tin bronze, with long service life.

7. Single and double rods are resistant to corrosion and abrasion by hard chromium plating.

8. The machine is more accurate and safe.

The company has strong technical force. The air compressors of water cooling series and air cooling series are widely used in bottle blowing, textile, military industry, railway, transportation, chemical industry, medical research, machinery, food, instrument, construction, water conservancy, sand blasting, spray painting and other fields. The Zunli brand air compressor produced by shenglijia is committed to becoming a famous brand product, providing stable quality, leading technology, safe and reliable mechanical products for customers.