Servo control device and control method for thread milling machine

Abstract

The invention discloses a servo control device for a thread milling machine. The servo control device is connected with a shaft C of the thread milling machine, and is characterized by comprising a synchronous servo motor, a servo controller and a motor angle sensor; the synchronous servo motor is connected with the shaft C of the thread milling machine and is used for driving the shaft C to run; the servo controller is connected with the synchronous servo motor, and the synchronous servo motor runs under the control of the servo controller in a vector control mode; the motor angle sensor is connected with the servo controller and the synchronous servo motor respectively and is used for detecting running angels of the synchronous servo motor, converting angle data into corresponding signals and transmitting the corresponding signals to the servo controller. The invention further provides a servo control method for the thread milling machine. The servo control device and the servo control method have the advantages of low energy consumption, high running precision, stable speeds and controllable torque.

Description

technical field [0001] The invention relates to a servo control technology, in particular to a servo control device for a thread milling machine and a control method thereof. Background technique [0002] A thread milling machine is a processing machine tool used for milling threads and is an important equipment in thread processing. When the thread milling machine is working, it usually needs a larger motor to drive the C-axis. If an asynchronous motor is used to drive, this operation mode often brings the following problems: the energy generated by the large motor to drive the C-axis The power consumption is relatively high; the torque fluctuation of the large motor to drive the C-axis is large, making it difficult to guarantee the accuracy; the large motor to drive the C-axis makes the low-speed torque small and the speed cannot be adjusted, which makes the speed stability low and causes screw threads. The start of the milling machine is not smooth; the torque of the tra...

AI Technical Summary

Problems solved by technology

When the thread milling machine is working, it usually needs a larger motor to drive the C-axis. If an asynchronous motor is used to drive, this operation mode often brings the following problems: the energy generated by the large motor to drive the C-axis The power consumption is relatively high; the torque fluctuation of the large motor to drive the C-axis is large, making it difficult to guarantee the accuracy; the large motor to drive the C-axis makes the low-speed torque small and the speed cannot be adjusted, which makes the speed stability low and causes screw threads. The start of the milling machine is not smooth; the torque of the traditional motor driving the C-axis cannot be controlled, which will cause frequent damage to the tool

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