Basic principle and application routine of Beifu PLC rotary cutting

This article explains the basic principle and application routines of rotary cutting , The so-called rotary cutting refers to the rotation of the wood section on the fixed axis , Rotate until the blade is parallel to the axis of the wood section to make a linear feed movement , The process of cutting in the direction of wood rings .
Rotary cutting can be divided into rotary cutting with card and rotary cutting without card , Rotary cutting with card is mainly used to process wood with larger diameter , And non - Card rotary cutting is to process small diameter logs .
Rotary cutting machine is also one of the main equipment for producing veneer , In a sense , More widely used than planers . The rotary cutting machine can be divided into concentric rotary cutting and eccentric rotary cutting according to whether the wood section rotates around its own axis . Concentric rotary cutting machine is also divided into two types, i.e. clamping shaft rotary cutting machine and non clamping shaft rotary cutting machine . Eccentric rotary cutting can obtain beautiful radial patterns , But the productivity is lower than that of concentric rotary cutting .
Rotary cutting machine is generally large in volume and complex in structure , Log centering is required before starting the machine , If centering is not accurate , Intermittent veneer strips or narrow veneers will be spun out when turning . More broken veneers or narrow veneers , The more sapwood veneers with good materials are lost , It is not conducive to the continuity of production . Logs are bent 、 Irregular section and big and small ends at both ends ( Taper ) The veneer that is easy to spin out is broken veneer , Waste wood . And when the log diameter is reduced to a certain extent , You can't continue to spin ( That is to say, the remaining wood cores cause waste of wood ).
The drawback of the planer is ： The width of planing veneer is narrow , It's usually 300rnm Occasions with special requirements .
1. low speed 、 High torque . Compared with electromagnetic motor , The most remarkable feature of ultrasonic motor is that it has large torque output at low speed . Torque density of ultrasonic motor ( Torque to weight ratio ) Is the torque density of the electromagnetic motor 100~1000 More than times .
2. Simple and flexible structure 、 There are various forms of sports . The ultrasonic motor is generally composed of a stator 、 rotor ( Or moving body ) Two parts , And the stator of the motor can be easily connected 、 The rotor is integrated with the fixed part and the moving part of the moving system respectively . The ultrasonic motor has a ring 、 Round plate 、 Square plate 、 Various flexible structural forms such as cylinder and sphere , And it is very easy to realize various forms of movement , Such as rotary motion 、 Straight line motion 、 Two dimensional plane motion and three dimensional motion .
3. life 、 Noise and reliability problems . Because the driving of ultrasonic motor is mostly contact type , This is bound to bring certainty 、 Friction loss between rotors .
at present , The continuous working life of the developed low-power ultrasonic motor is generally about several thousand hours . The service life of ultrasonic motor is short , Poor reliability , And job instability