Engraving machine common sense

Bed body mechanism, spindle motor, transmission mode, control system, drive, stepper/servo motor, guide rail, frequency converter, pump, vacuum cleaner, etc. (1) Woodworking engraving machine body structure: generally T-shaped bed, steel structure, cast iron or cast aluminum. (2) Computer engraving machine spindle motor: The main axis of the general advertising machine is between 800w-3kw, and the woodworking machine is 3kw-4.5kw. The industrial type is larger. One of the classifications is made in China, and the other is the Italian HSD spindle. The spindle motor is an important component of the computer engraving machine. Its performance is crucial to the performance of the computer engraving machine: Computerized engraving machine processing spindle classification: precision machining spindle and high power cutting spindle. 1. The characteristics of the fine machining spindle are low noise, high speed and height, suitable for processing particularly fine workpieces such as stamps, nameplates, badges and so on. Such motors are usually high-speed variable frequency motors with low power, typically below 1500W. The disadvantage is that the ability to cut thick materials is poor and does not cut off thicker materials. 2, high-power cutting spindle, mainly used for cutting, high-power carving, characterized by high power, strong cutting ability, especially suitable for cutting the universe, three-dimensional characters, of course, you can also make badges, nameplates, seals and so on. The high-power cutting spindle is mainly used for cutting and high-power engraving. It features high power and strong cutting ability. It is especially suitable for cutting the three-dimensional characters. Of course, it can also make badges, nameplates and seals. Such high-power spindles can be generally classified into brushless high-frequency AC motors and brushed AC motors according to the characteristics of the motor. The main difference is: A, the brushless variable frequency motor has a high speed, and the shift range is 700-60000 rpm. Generally, the maximum speed of the brush AC motor does not exceed 24,000 rpm: B. The brushless variable frequency motor has high rotation precision, low wear and low noise, and the noise is much lower than that of the brushed AC motor; C, the brushless inverter motor has good blocking characteristics. Because there is a special current limiting circuit on the inverter, the short-time blocking will not burn the motor, and the brushed AC will burn out quickly when it is overloaded or blocked, and it cannot be repaired; D, no brush The frequency conversion motor adopts the frequency conversion control technology to adjust the speed. It is a professional grade product with long service life. The manufacturer provides one year free replacement. In the future, the motor can be maintained by replacing the high speed bearing. The brushed AC motor has a life of about 300 due to the use of the electric motor. The motor or motor carbon brush has to be replaced in an hour, so the carbon brush AC motor is usually not guaranteed for one day. 3, the electronic shaft rotation speed of 18000 rev / min to 160,000 rev / min, the industry is currently the most used is 18000 rpm and 24000 rpm electronic shaft. (3) Transmission mode: There are two kinds of screw drive and rack gear drive. In general, the screw has high precision, slow speed, fast rack and pinion and low precision. The screw drive has high precision and high cost. However, under long-distance heavy loads, the lead screw is prone to bending, and the rack does not exist. Generally more than 6 meters is recommended to use the rack. The precision of the screw is indeed better than the rack, depending on your load and span. Now the rack also has a lot of anti-backlash means to compensate for the accuracy problem. (4) Control system: There are processing codes produced by various CAD/CAM design softwares such as Weihong/TPYE3/artam/castmate/Wentai/DSP. There is also a DSP handle pluggable U disk control. The most frequently used is the Weihong control system. Guests request to upgrade to DSP controller, you can add money to upgrade, DSP handle is Beijing Ruizhi Tianhong black card, black card. (5) Driver: The driver is in the middle of the control section, just in the middle of the main control box (MAIN CONTROLLER) --> drive (DRIVER) --> motor (MOTOR). His main function is to receive signals from the main control box (NC CARD), then process the signals and transfer them to the motor and motor-related sensors (SENSOR), and feed the motor's operation back to the main control box (MAIN). CONTROLLER). (6) Motor: Generally, it is a stepper motor and a servo motor. Servo motors are generally equipped with high-end models. (7) Guide rail: The guide rail has a circular guide rail and a linear rectangular guide rail (square rail). The square rail is more expensive than the compass and has high precision and stability. Some guests will be equipped with XY-axis square rails and Z-axis round rails. Because the XY axis has a large processing range, the Z-axis is only written up and the stroke is short. (8) Inverter: The function of the inverter is to convert the power frequency power supply into another frequency power control device by using the on/off function of the power semiconductor device. The brand we use: Shanghai Jiuchuan / Sifang / Delta. (9) Pump: There is no pump on the general advertising machine. There are woodworking and general-purpose models. The pump has a pump and an oil-free pump. The price of the oil-free pump is high and optional. (10) Dust collecting device: The advertising machine has no vacuum cleaner, and the woodworking has a vacuum cleaner. In addition: there are generally two types of countertops: T-slot aluminum frame and vacuum adsorption table. The shank diameter is between 3.175 and 12.7 mm.