Application of Spindle of Machine Tool

V11 ACI Inverter in CNC Lathe Spindle Control Program

一、CNC  Lathe  Work  Site  Photos

二、Basic Requirements for Machining Operations of CNC Lathe
1、 High cutting precision
2、High stability, complex processing, irregular shape parts of the high pass rate
3、 High flexibility, low impact, the requirements of the control system response speed
4、High productivity

三、V11 Variable Frequency Control System Configuration and Schematic
1、Control system configuration
①   V11 frequency inverter ②Spindle motor    ③  Transmission part  ④ Numerical control operating system ⑤ Encoder  ⑥（PG卡）  Drive (PG card)
 Note: install encoder, PG card as optional, selected according to the closed-loop vector control system for machining process.
 2、System schematic diagram:

四、Advantages of V11 frequency conversion control system
1、Fully satisfy the requirement of high productivity, high cutting accuracy, good stability, high flexibility and fast response speed.
2、V11 vector control mode, dynamic response speed is very fast, so that the motor spindle can be high-speed and stable operation.
3、Meet the complex and irregular shape parts processing requirements, in the low frequency state (1Hz), can maintain 100% of the output torque, so as to ensure the stable operation of the spindle in low frequency.
4、Plus deceleration time can be set to 0.1 seconds to achieve fast forward and reverse operation.
5、Strong anti-interference ability, through strict CNC comprehensive test, will not cause any disturbance to the system.
6、The speed is high, the rate of change is small at low speed, and the operation is stable.

五、System  Characteristics  and  Wiring  Diagram of CNC Lathe
1、The NC lathe system is controlled by two signals to control the rotation of the main shaft of the lathe: One is to simulate the voltage signal 0~10V input, and the other is to simulate the current signal.
2、The system requires that the spindle of the lathe can be quickly and quickly switched to run.
3、Basic wiring diagram:

六、V11 Variable Frequency Control System Main Operation Steps and Parameter Setting Table
1、From the start of motor and load, frequency converter, motor parameters self-learning (correct input motor nameplate parameters).
2、Select the vector control mode (SVC), and then enter the required parameters of the system.
3、The specific parameters are set as follows:

七、Application
    The frequency conversion control system of the numerical control lathe is only one of the many applications of V11. V11 inverter control chip using high-performance DSP chips produced in the United states with high speed. As the domestic high-end inverter, its excellent quality and performance can meet the practical application requirements.

Attached: V11 inverter in the numerical control lathe on the measured data:
1、Configuration of NC Lathe

2、Operation Data

3、Shutdown Current and Low Frequency Torque