I. Introduction
At present, most woodworking engraving machines used by furniture manufacturers use Stepper Motor systems. Because of the low speed of the stepping motor and the large step angle, the carving speed of the engraving machine is slow and the engraving accuracy is poor, which directly affects the production efficiency and production quality of the furniture factory, and the stepping motor system is prone to losing steps. When an error occurs, it cannot be promptly corrected, resulting in material loss. AC servo system as a high-speed and high subdivision accuracy of the motion control system, has unparalleled advantages in this, but also help improve the stability of the engraving machine system, greatly improve the overall performance of the engraving machine.
Second, engraving machine structure and process overview
2.1 Definition: Machine used to sculpt wood, stone, metal and other materials. Carve a variety of patterns, such as Buddha statues, root carvings, and so on.
2.2 The structure is mainly composed of the engraving machine transmission, the host computer Weihong control card, the Ou Rui SD10 servo drive, spindle and inverter.
2.3 Product Description:
This machine is a three-dimensional engraving machine specially developed for furniture factories and handicraft industries. It can produce three-dimensional objects such as three-dimensional three-dimensional technology, three-dimensional furniture feet, cylinders, human bodies, Buddha statues, Guanyin, sculptures, handicrafts and animal animals. There are eight special engraving heads that can produce eight products at a time.
2.4 Process Introduction:
Computer engraving machine consists of computer, engraving machine controller and engraving machine host three parts. Its working principle is: through the computer's special engraving software design and layout, and the computer design and typesetting information is automatically transmitted to the engraving machine controller, and then the controller to convert these information can drive the servo motor With power signal (burst), control the engraving machine host to generate X, Y, Z, A four-axis carving tool path base diameter. At the same time, the high-speed rotary engraving head on the engraving machine cuts the processing material fixed on the host table through the tool configured by the processing material to realize the automatic engraving operation. Among them, the graphic input part is a digital graphic file that can be recognized by the computer through the processing of the engraving software and the graphic to be engraved, so as to control the automatic operation of the processing machine. Secondly, the data processing part uses a computer to further process the graphic files processed by the engraving software into electronic signals that can control the actions of the processing machines.
Third, the introduction of LC500 series servo application
3.1 to achieve continuous axis interpolation control
Because of the different mechanical connection methods of the engraving machine manufacturers, taking an engraving machine manufacturer as an example, the X axis uses 1.2kW servo drives, the Y axis uses 800kW servo drives, the Z axis uses 1.2kW servo drives, and the A axis uses 1.5kW servo drives. Here we introduce the connection methods of three-dimensional engraving machines X, Y, Z, and A-axis servo motors, as detailed in the following diagram:
3.2 System debugging steps:
3.2.1 Ensure that the wiring of the servo driver and motor is correct.
3.2.2 Energize the driver and let the driver be in a jog state to ensure that the motor is operating normally.
3.2.3 Select the servo operation mode to make the wiring of the driver and the CNC system correct, especially whether the alarm signal is easy to use.
3.2.4 Adjust the servo gain to allow the driver to operate optimally.
3.3 The effect of finished products: a little
3.4 LC500 servo driver wiring diagram, using Weihong control card:
3.5 LC500 Servo Drives Related Parameter Recommended Settings:
Fourth, the conclusion
At present, the servo choices of many engraving machine manufacturers in China are based on imported brands. While the users in the industry recognize the quality of products, they are also experiencing significant cost pressures. The domestic engraving machine customers use domestic servos to reduce equipment costs. However, domestic servos are late starting, the technology is not mature, and the failure rate is high. After years of R&D, production, and field experiments, Oerlikon Drive Servo proves the stability of its performance. The excellent cost performance will surely gain the trust of more engraving machine manufacturers.
The Unipolar stepper motor operates with one winding with a center tap per phase. Each section of the winding is switched on for each direction of the magnetic field. Each winding is made relatively simple with the commutation circuit, this is done since the arrangement has a magnetic pole which can be reversed without switching the direction of the current. In most cases, given a phase, the common center tap for each winding is the following; three leads per phase and six leads for a regular two-phase Stepper motor.
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Shenzhen Maintex Intelligent Control Co., Ltd. , https://www.maintexmotor.com