Virtual feed drive system of machine tools development and applications in diagnosis and servo‐tuning

2020 ◽  
Vol 22 (6) ◽  
pp. 2167-2182 ◽  
Author(s):  
Ko‐Fei Lee ◽  
Ching‐Hung Lee
Keyword(s):  
Machine Tools ◽  
Drive System ◽  
Feed Drive ◽  
Feed Drive System

Study on High Speed Feed Drive System for Machine Tools -Improvement of PID Control Parameter-

1993 ◽  
Vol 5 (4) ◽  
pp. 357-362
Author(s):  
Toshitake Tateno ◽  
◽  
Hiromu Nakazawa ◽  
Keyword(s):  
Pid Control ◽  
Machine Tools ◽  
High Speed ◽  
Drive System ◽  
Control Parameters ◽  
Hydraulic Actuator ◽  
Feed Drive ◽  
Large Size ◽  
Cutting Operation ◽  
Feed Drive System

In order to realize feed rate of 20m/min for cutting operation of medium and large size machine tools, a new high speed and high accuracy feed drive system which has a servomotor and ballscrew combined with a hydraulic actuator has been developed. As stated in a previous paper this system can drive ten times faster than conventional rate with considerable accuracy. This paper describes a method for determining optimal PI control parameters of the electric servomotor and PD control parameters of the hydraulic actuator. In order to make the best use of the hydraulic actuator a new function which compares the force of electric servomotor with that of hydraulic actuator is proposed. The experimental results show that the controlling parameters determined by this method reduce motor power and the method is proved to be effective.

Experimental Study on Dynamic Behavior of High Precision Servo Motor for Machine Tools

2017 ◽  
Vol 863 ◽  
pp. 224-228
Author(s):  
Takanori Yamazaki
Keyword(s):  
Machine Tools ◽  
Nonlinear Behavior ◽  
Drive System ◽  
Servo Motor ◽  
Ac Servo ◽  
Feed Drive ◽  
Rolling Elements ◽  
Ac Servo Motor ◽  
Feed Drive System ◽  
Nonlinear Behaviors

In the field of machining industries it is always required to improve the accuracy of precise products, die and molds. The feed drive system for the machine tools consists of an AC servo motor, an amplifier and rolling elements etc. It is well known that the nonlinear behaviors of the rolling elements influence the motion accuracy of the feed drive system. However, in spite of the analysis of static behaviors have been done, the dynamic behaviors are not so examined. Our special interest is how to control the nonlinear behaviors of the rolling elements and to operate the feed drive system with high accuracy. In order to model the nonlinear behaviors of the feed drive system, we measure the transient response when the step inputs of microscopic displacement are input to the AC servo motor and the detail analysis will be done. Experimental results show that the step responses become slow as the input displacement becomes microscopic. It means that with the ball bearing built into the AC servo motor used to feed driving system have the nonlinear behavior in microscopic displacement range.

Stiffness matching method for the ball screw feed drive system of machine tools

2020 ◽  
Vol 34 (7) ◽  
pp. 2985-2995
Author(s):  
Gaiyun He ◽  
Panpan Shi ◽  
Dawei Zhang ◽  
Guangming Sun
Keyword(s):  
Machine Tools ◽  
Drive System ◽  
Ball Screw ◽  
Matching Method ◽  
Feed Drive ◽  
Feed Drive System ◽  
Screw Feed
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