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Fuzzy-control-based soft abrasive grain flow processing method and device thereof

A technology of fuzzy control and processing method, applied in manufacturing tools, self-adaptive control, general control system, etc., can solve the problems of low flow rate control accuracy and low processing efficiency, so as to improve processing quality, improve uniformity and dynamic pressure distribution. uniform effect

Active Publication Date: 2013-01-02
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the deficiencies of low flow velocity control accuracy and low processing efficiency in the existing soft abrasive flow machining, the present invention provides a soft abrasive flow machining method based on fuzzy control with high flow velocity control accuracy and improved processing efficiency and its device

Method used

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  • Fuzzy-control-based soft abrasive grain flow processing method and device thereof
  • Fuzzy-control-based soft abrasive grain flow processing method and device thereof
  • Fuzzy-control-based soft abrasive grain flow processing method and device thereof

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Embodiment 1

[0032] refer to Figure 1 to Figure 5 , a soft abrasive flow processing method based on fuzzy control, the specific process of the processing method is as follows:

[0033] (1) The temperature sensor in the liquid storage tank measures the current temperature of the soft abrasive particles, and calculates the optimal speed at the current temperature by the temperature-optimal speed formula;

[0034] (2) Input into the fuzzy controller, the optimal speed is used as the speed given value of the fuzzy controller, and the current velocity measured by the speed sensor is input as the feedback quantity of the fuzzy controller; the difference between the optimal speed and the current speed is The input quantity of the system; in the fuzzy controller, after the input quantity is processed through fuzzification-fuzzy control rules-fuzzy decision-refinement treatment, the precise output quantity is output, and the output quantity is the variation of voltage frequency, and the actuator ...

Embodiment 2

[0052] refer to Figure 1~Figure 5 , a soft abrasive flow processing device based on fuzzy control, including a soft abrasive flow processing experimental platform, the soft abrasive flow processing experimental platform includes a liquid storage tank, and a pump and a pipeline are installed in the liquid storage tank , the pump is connected to a frequency converter, the frequency converter is connected to a RS232 / RS485 converter, the RS232 / RS485 converter is connected to a processing controller, a temperature sensor and a flow sensor are installed in the pipeline, and the temperature sensor and The flow sensor is connected to an A / D converter which is connected to the process controller.

[0053] The system block diagram is attached image 3 As shown, the flow chart is as figure 1 shown.

[0054] In the system, the temperature sensor measures the current temperature, and the mathematical model set inside the system calculates the optimal speed at the current temperature, a...

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Abstract

Disclosed is a fuzzy-control-based soft abrasive flow grain processing method. The method comprises that the current temperature of soft abrasive grains is measured and obtained by a temperature sensor inside a liquid storage groove, and the optimal velocity under the current temperature is calculated in accordance with a temperature-optimal velocity formula; the optimal velocity is output to a fuzzy controller and serves as a velocity specified value of the fuzzy controller, the current flow velocity is obtained through measurement of a speed sensor, the current flow velocity serves as a feedback amount of the fuzzy controller to be input, the output amount is a variable quantity of voltage frequency and an executive mechanism is a frequency converter; and the frequency of the input voltage of a pump is changed through the frequency converter, the rotary velocity is changed, the flow velocity of the soft abrasive grains is controlled and the soft abrasive grain flow processing is achieved. The invention also discloses a system. By the aid of the system, the soft abrasive flow grain processing method can be achieved. Accordingly, the flow velocity controlling accuracy is high and the processing efficiency is improved.

Description

technical field [0001] The invention relates to the field of soft abrasive flow precision machining, in particular to a soft abrasive flow processing method and a device thereof. Background technique [0002] In mold processing, polishing is widely used as the last process of product processing, but it is still impossible to process structured surfaces that cannot be reached by polishing tools such as grooves, grooves, holes, prisms, pyramids, and narrow slits. The liquid-solid two-phase soft abrasive flow processing method uses soft abrasive flow to form turbulent flow on the structured surface of the workpiece to be processed, and is equipped with a constraining module to make the processed surface a part of the flow channel wall and form abrasive particles. The flow channel, when the abrasive flow flows through the channel, cuts the rough part of the wall surface, realizing the tool-free precision machining of the structured surface. [0003] Solid-liquid two-phase soft ...

Claims

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Application Information

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IPC IPC(8): B24B57/02G05B13/04
Inventor 计时鸣周龙兵谭大鹏王嘉琦张微李宜燃
Owner ZHEJIANG UNIV OF TECH
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