At present, the mainstream woodworking engraving machine is mainly composed of computer, engraving machine control system and engraving machine body
computer:
Also known as PC, computer, equipped with special engraving software to design and typeset drawings;
Engraving machine control card: industry specific controller, serial port communication with computer. By receiving the drawing information sent by the computer, and converting it into the pulse signal required by servo or step drive to control the cutter position of X, y and Z axes, it can also provide the analog quantity or multi speed signal required by the spindle control inverter to drive the spindle motor to rotate at high speed and carve the wood board;
The main part of the machine is mainly mechanical.
technological requirements
High speed spindle control system is an important part of wood engraving machine, and its performance has a crucial impact on the performance of the whole engraving machine. The spindle of woodworking engraving machine mostly adopts two-stage high-speed water-cooled asynchronous motor, and the general process requirements are as follows:
(1) The operating speed is generally 0 ~ 24000r / min, corresponding to the frequency range of 0 ~ 400Hz;
(2) Generally, the main body of engraving machine is equipped with multiple spindle heads, which are driven by a frequency converter at the same time;
(3) In order to ensure the carving effect, the spindle speed stability accuracy should be high;
(4) High torque at low speed and strong overload capacity;
(5) Low electromagnetic noise;
(6) The leakage current should be small to avoid the customer leakage switch tripping.
Application scheme
In the high-speed spindle control system, the common voltage levels of spindle motor are single-phase 220 V and three-phase 380 v. the low-power model is mainly single-phase 220 V, and the high-power model is mainly three-phase 380 v. According to the different motor configuration of customers, choose different power input inverter.
There are two kinds of frequency setting sources for spindle frequency converter: multi segment speed (7 segments) and analog value of 0-10V. In actual use, users are requested to select one of the connection modes according to the actual signal provided by the control card, and set the corresponding parameters.
The system wiring is shown in the figure below:
Product features
Compared with other traditional industries, woodworking engraving machine spindle control system has lower requirements for the function of frequency converter, mainly speed regulation. The characteristics and advantages of vl6100 series vector type general frequency converter in woodworking engraving machine industry are mainly reflected in:
(1) Wide speed range, the highest frequency of 3200hz, can meet the needs of higher speed engraving;
(2) Wide voltage input range, meet the customer site with large voltage fluctuation;
(3) Compact structure, saving installation space;
(4) Excellent EMC performance, avoid interference to computer, servo and step in the system, and have strong anti-interference ability;
(5) Independent air duct design, to avoid the use of wood engraving machine site a large number of sawdust into the interior of the body, affect the service life.
