A type selection method of servo motor for ball screw feed 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: 2022-02-08
TSINGHUA UNIV
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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

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  • A type selection method of servo motor for ball screw feed system
  • A type selection method of servo motor for ball screw feed system
  • A type selection method of servo motor for ball screw feed 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 in particular relates to a method for selecting a servo motor for a ball screw feed system. This method first deduces the driving torque expression under the conditions of no-load quick start and maximum cutting load; further determines the range of system gain and the range of inertia of the servo motor; finally completes the selection of the servo motor according to the speed-torque curve. This method fully considers various typical working conditions to ensure that the ball screw feed system has sufficient driving capacity. At the same time, it also pays attention to the motor-load inertia ratio, so that the servo motor can obtain better dynamic performance. This method realizes the fast and accurate selection of the servo motor of the ball screw feeding system, overcomes the problems of relying on experience, low efficiency and inaccuracy of the traditional method, and quickly and accurately selects the servo motor for the ball screw feeding system, and at the same time It provides an accurate and convenient servo motor selection method for on-site engineers and 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...

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Application Information

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Patent Type & Authority Patents(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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