Accurate feeding apparatus and method for low-pressure post-mixed type micro abrasive jet

A post-mixing and abrasive jet technology, which is applied in the direction of abrasive feeding devices, used abrasive processing devices, abrasives, etc., can solve the problems of inability to achieve accurate abrasive feeding and difficulty in inhaling fine abrasives, and achieve feeding The effect of continuous and stable process and convenient automatic control

Inactive Publication Date: 2013-11-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that in the existing low-pressure post-mixing micro-abrasive jet processing technology, it is difficult to inhale fine abrasives and cannot realize accurate feeding of abrasives, and to provide a low-pressure post-mixing micro-fine abrasive jet precise feeding device and method.

Method used

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  • Accurate feeding apparatus and method for low-pressure post-mixed type micro abrasive jet

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specific Embodiment approach 1

[0022] Specific implementation mode one: the following combination figure 1 Describe this embodiment, the low-pressure post-mixing fine abrasive jet precision feeding device described in this embodiment includes a post-mixing injection device, a precision flow control pump 6, a precision flow control pump motor driver 7, an abrasive mixed liquid stirring device 8, Stirring device motor driver 9 and computer 10,

[0023] The post-mixing injection device has a nozzle 2, a post-mixing chamber 3, a working fluid inlet 4 and an abrasive mixed liquid inlet 5;

[0024] The nozzle 2 provided at the lower end of the post-mixing injection device faces the upper surface of the workpiece 1, the upper end of the post-mixing injection device is provided with a working fluid inlet 4, and the interior of the post-mixing injection device is provided with a post-mixing chamber 3. The side wall is provided with an abrasive mixed liquid inlet 5, and the abrasive mixed liquid inlet 5 communicates...

specific Embodiment approach 2

[0030] Embodiment 2: This embodiment further describes Embodiment 1, and the precision flow control pump 6 is a peristaltic pump.

[0031] With such a setting, the precise control of the input flow rate of the peristaltic pump can be conveniently realized by controlling the speed of the peristaltic pump, and the peristaltic pump isolates the abrasive mixed liquid from the pump body through the pipeline during the feeding process, avoiding the impact of the external environment on the abrasive mixed liquid. pollution.

specific Embodiment approach 3

[0032] Embodiment 3: Based on the method of the low-pressure post-mixing fine abrasive jet precision feeding device described in Embodiment 1, the method includes the following steps:

[0033] Step 1. Prepare abrasive mixed liquid with fine abrasives and working liquid medium, and inject the abrasive mixed liquid stirring device 8 for stirring, so that the abrasive and the working liquid medium are evenly mixed, and the concentration of the abrasive mixed liquid is controlled at 50g / L-300g / between L;

[0034] Step 2, turn on the precision flow control pump 6;

[0035] Step 3: Control the speed of the precision flow control pump 6 through the computer 10, so that the speed of the precision flow control pump 6 is controlled between 50 rpm and 600 rpm;

[0036] The stirring speed of the abrasive mixed liquid stirring device 8 is controlled by the computer 10, and the stirring speed of the abrasive mixed liquid stirring device 8 is controlled between 50 rpm-300 rpm;

[0037] S...

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Abstract

An accurate feeding apparatus and a method for low-pressure post-mixed type micro abrasive jet belong to the technical field of difficult-processing material processing, and the problems in conventional low-pressure post-mixed type micro abrasive jet processing technologies are solved that micro abrasives are difficult to suck and accurate feeding of the abrasives is difficult to realize. According to the accurate feeding apparatus, a post-mixed jet device comprises a nozzle, a post-mixed chamber, an operating fluid inlet and an abrasive mixed liquor inlet; the nozzle disposed at the lower end of the post-mixed jet device is just opposite to the upper surface of a to-be processed workpiece; the post-mixed jet device is provide with the operating fluid inlet at the top, the post-mixed chamber in the interior, and the abrasive mixed liquor inlet at the side wall; an abrasive mixed liquor stirring device is connected with the inlet of a precision flow control pump via a pipeline; the outlet of the precision flow control pump is connected with the inlet of the abrasive mixed liquor inlet; a computer controls the rotating speed of the precision flow control pump via an electric motor driver of the precision flow control pump; and the computer controls the rotating speed of the abrasive mixed liquor stirring device via an electric motor driver of the abrasive mixed liquor stirring device.

Description

technical field [0001] The invention relates to a low-pressure post-mixing micro-abrasive jet precise feeding device and method, and belongs to the technical field of processing difficult-to-machine materials. Background technique [0002] Abrasive jet technology has been widely used in the fields of cutting, processing and polishing since it was produced in the 1980s due to its convenience and flexibility, and a wide range of applications for processing materials. In abrasive jet processing, materials with higher hardness such as white corundum, silicon carbide or diamond are generally used as abrasive particles to be sprayed onto the surface of the processed material with high-pressure fluid, so as to realize the removal of the processed workpiece material. According to the abrasive mixing method, it can be divided into front-mixing and post-mixing abrasive jet processing. The front-mixing abrasive jet processing technology has serious wear and tear on the pressure circuit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24C7/00B24C9/00
Inventor 张勇张飞虎张成光栾殿荣
Owner HARBIN INST OF TECH
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