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Servo motor type selection method for ball screw feeding system

A servo motor and ball screw technology, which is applied in the field of servo motor selection, can solve the problems of increasing the development cost of the ball screw feed system, wasting the performance of the servo motor, and cannot be effectively promoted, and achieves a convenient selection method, good Dynamic performance, the effect of important engineering application value

Active Publication Date: 2021-05-25
TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

[0003] The selection of traditional servo motors is mainly done by engineers based on experience. The process is repeated and the efficiency is low. At the same time, in order to ensure the driving capacity, a larger servo motor is often selected, which is likely to cause waste of the performance of the servo motor and improve the performance of the ball screw feed system. development costs, and empirical methods cannot be effectively promoted

Method used

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  • Servo motor type selection method for ball screw feeding system
  • Servo motor type selection method for ball screw feeding system
  • Servo motor type selection method for ball screw feeding system

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Embodiment Construction

[0026] The servo motor type selection method for the ball screw feed system proposed by the present invention, its flow chart is as follows figure 1 shown, including the following steps:

[0027] (1) Establish the driving torque τ of the servo motor under the condition of no-load quick start A The expression of is as follows:

[0028]

[0029] In the formula, τ A is the driving torque of the servo motor under the condition of no-load quick start, n max is the maximum speed of the servo motor, t a is the acceleration time, J m and J L are servo motor inertia and load inertia respectively, e is the natural base, K s is the gain of the ball screw feed system, η is the mechanical transmission efficiency, the value range of η is 0.85-0.95, τ f is the friction torque, friction torque τ f The value of can be obtained from the parts manual;

[0030] Establish the driving torque τ of the servo motor under the maximum cutting load condition B The expression of is as follows...

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Abstract

The invention belongs to the technical field of mechatronics, and particularly relates to a servo motor type selection method for a ball screw feeding system. The method comprises the following steps: firstly, deducing a driving torque expression under the conditions of no-load quick start and maximum cutting load; further determining a system gain range and a servo motor inertia range; and finally, completing servo motor model selection according to the rotating speed-torque curve. According to the method, various typical working conditions are fully considered, it is guaranteed that the ball screw feeding system has enough driving capacity, meanwhile, the motor-load inertia ratio is concerned, and the servo motor obtains good dynamic performance. According to the method, rapid and accurate type selection of the servo motor of the ball screw feeding system is achieved, the problems that a traditional method depends on experience and is low in efficiency and inaccurate are solved, the servo motor is rapidly and accurately selected for the ball screw feeding system, and meanwhile the accurate and convenient type selection method for the servo motor is provided for field engineering technicians.

Description

technical field [0001] The invention belongs to the technical field of mechatronics, and in particular relates to a method for selecting a servo motor for a ball screw feed system. Background technique [0002] The ball screw feed system has outstanding advantages such as high rigidity, high reliability, simple structure, and insensitivity to interference. It is used to realize various linear feed motions and has been widely used in the industrial field. As the driving part of the ball screw feed system, the servo motor directly affects the performance of the ball screw feed system. In the development process of the ball screw feed system, selecting the appropriate servo motor is the core step to ensure the performance of the system, and how to quickly and accurately complete the selection of the servo motor has become a key problem that needs to be solved urgently. [0003] The selection of traditional servo motors is mainly done by engineers based on experience. The proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/401
CPCG05B19/401
Inventor 王冬王立平李学崑张云
Owner TSINGHUA UNIV
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