I. Introduction <br> <br> CNC machine tools, referred to as NC (Numerical Control) machine tools, it is a comprehensive application of computer technology, automatic control, sensor technology, precision measurement and machine tool design, advanced technology and developed a new type of The machine tool is an electromechanical integration product integrating mechanical, electrical, hydraulic, pneumatic, microelectronics and other technologies. It is a working machine with high precision, high efficiency, high automation and high flexibility in mechanical manufacturing equipment. Next page Widened Spring Washer,Metric Plain Washers,Retaining Rings For Shafts,Din 70952 Tab Washers Handan Changlan fasteners manufacturing ,.Co ltd , https://www.hdchanglanjgj.com
CNC machine tools generally consist of two parts: machine and electricity. The electrical and electronic parts are mainly composed of CNC system, feed servo drive and spindle feed drive system. The main shaft is an important part of the machine tool structure, which plays an important role in improving the machining efficiency, expanding the range of processing materials and improving the processing quality. Most of the conventional ordinary machine tools are not capable of automatic shifting. When shifting is required, the machine can only be stopped and then manually shifted. Most of the main drive systems of CNC machine tools use stepless speed change. At present, the continuously variable transmission system mainly has two types of variable frequency spindle system and servo spindle system, and generally adopts a DC or AC spindle motor. The spindle is rotated by the belt drive, or the spindle is rotated by the belt drive and the reduction gear in the headstock (for greater torque). Due to the wide speed range of the spindle motor and the stepless speed regulation, the structure of the spindle box is greatly simplified. At present, due to the high cost performance of the frequency converter, the frequency converter is very common in the numerical control transformation of economical CNC machine tools and ordinary machine tools.
Product Features Allen-Bradley's PowerFlex 4 AC drive provides users with powerful motor speed control in its compact, space-saving design. It is the smallest and most cost-effective member of the PowerFlex family of drives. . The drive is available in rated power and voltage ratings of 0.2-3.7 kW (0.25-5 hp) and 120V, 240V, 480V, respectively, to meet the flexibility, space savings and ease of use of all OEMs and end users. And designed. The PowerFlex 4 is a cost-effective choice for speed control of machine tools such as spindle drive applications in the machine tool industry.
1. It is a compact mini product with small size and zero clearance, saving installation time and space.
2. Easy installation, flexible protective housing and mounting options for direct mounting on DIN rails.
3. Sensorless vector control performance meets the needs of various types of applications, especially in the low-speed torque to meet the needs of the machine spindle, starting torque can reach more than 150% at 5HZ.
4. Full-featured, easy to set-up, control panel controls and potentiometers on the panel simplify the start-up process. The status indicators on the start button and speed potentiometer indicate their status.
5. Integrated panel and communication port with built-in RS485 communication (DSI, inverter serial communication protocol).
6. Outstanding excellent starting torque and acceleration performance, current accuracy and digital input response time, fast response to torque changes, high speed mode increases response time to 10mSec.
7. Provide multi-function output terminal signals, such as speed arrival signal, fault indication, to meet the system's monitoring of spindle speed status.
8. Drive Explorer and Drive Executive software provide a simple and intuitive way to program, monitor and control.
9. The carrier frequency can be up to 16KHZ. Only when the inverter is running, the fan will run, reducing the electromagnetic noise of the motor to achieve silent operation.
10. Strong load capacity, 150% rated output current for more than one minute, 200% rated output current for more than 3 seconds.