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Grinding wheel constraining abrasive particle injection precise dressing processing method and device

A technology of finishing and grinding wheel grinding, which is applied in the field of material surface machining, can solve the problems of low processing efficiency, and achieve the effect of uncomplicated design, manufacture and installation

Inactive Publication Date: 2008-03-26
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the boundary of the abrasive jet in this method is bounded by the polyurethane ball (or cylinder), the shape and precision of the machined surface can be controlled by controlling the movement of the polyurethane ball (or cylinder), but its processing efficiency is obviously higher than that of the abrasive jet. Processing method is much lower

Method used

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  • Grinding wheel constraining abrasive particle injection precise dressing processing method and device
  • Grinding wheel constraining abrasive particle injection precise dressing processing method and device
  • Grinding wheel constraining abrasive particle injection precise dressing processing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The invention is carried out on an ordinary grinder M7120.

[0030] An abrasive injection system composed of an abrasive flow pressurized pump, an infusion pipe (1), a control valve (2), a flow meter (3) and a nozzle (4) is installed above the ordinary grinding machine. After the grinding wheel disc is installed, the A protective cover (7) is provided on the outer frame of the grinding wheel frame, and a liquid sump (8) and a liquid baffle (9) are installed on the direction that the workbench at the other end of the grinder faces the nozzle. After the workpiece is processed by the abrasive flow, it flows into the liquid storage tank (10) after passing through the liquid collecting tank and the baffle, and then is pumped out by the booster pump to enter a new round of spray finishing process, forming a closed cycle. The bottom of the liquid storage tank is preferably equipped with an electromagnet to prevent working iron filings from entering the circulation of the abras...

Embodiment 2

[0037] The invention is implemented on a cylindrical grinding machine.

[0038]Same as embodiment 1, at first be to install the grinding wheel constraint abrasive jet precision finish processing device, that is to add on the cylindrical grinding machine by the abrasive grain flow pressurized pump (1), control valve (2), flow meter (3), spray Abrasive jetting processing system composed of nozzle (4), protective cover (7), liquid sump (8), baffle plate (9) and liquid storage tank (10). Due to the structural characteristics of the cylindrical grinder, the direction and position of the abrasive flow nozzle will change.

[0039] When the processing workpiece (5) is fixed on the workbench (6), the emery wheel (11) is fixed on the emery wheel frame, and the grinding machine is started to grind the workpiece. When the workpiece surface roughness Ra<2 μm, stop the emery wheel feed. At this time, start the abrasive flow pressurizing pump, open the control valve, and carry out the grind...

Embodiment 3

[0045] Implementation of the present invention on an internal grinding machine

[0046] First add the abrasive flow pressurized pump (1), control valve (2), flow meter (3), abrasive flow nozzle (4), protective cover (7) to the internal grinding machine according to the method of embodiment 1 , a liquid collection tank (8), a fender (9) and a liquid storage tank (10) etc. constitute a grinding wheel restrained abrasive jet finishing system.

[0047] Then fix the grinding wheel disc and the Q235-A steel workpiece, start the grinding machine to grind the grinding wheel, and stop the feeding of the grinding wheel when the surface roughness of the workpiece reaches Ra=1.6-3.2 μm. Start the abrasive booster pump. Contains W50 (particle size 50-40μm) Al 2 o 3 Microparticle emulsion, Al 2 o 3 The weight percentage of the same emulsion is 2:100, through the control valve, the pressure is adjusted to 3×10 3 Pa is subjected to abrasive jet finishing. At this time, the relative pos...

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Abstract

A blasting precise machining technology by use of abrasive wheel to restrict the abrasive particles including grinding by adrasive wheel and blasting the abrasive particles. It features that after the abrasive particle stream is blasted by high-pressure pump, it can obtain the momentum under the action of the centrifugal force and attracting force of abrasive wheel, and the fluid pressure field and speed field between abrasive wheel and workpiece. Its apparatus is composed of grinder, abrasive wheel, bench, pump, control valve, flowmeter, nozzle, shielding cover, liquid collecting both, stop plate and liquid tank.

Description

technical field [0001] The invention belongs to the technical field of material surface machining. Specifically, the present invention proposes a new method for surface finishing of materials. Background technique [0002] With the advancement of science and technology, while the modern machinery industry is committed to improving the machining accuracy, it pays more attention to improving the surface quality and surface integrity of parts, so as to improve the stability and reliability of product performance, and also to improve production efficiency and reduce Processing costs. [0003] Traditional material surface finishing methods include: (1) grinding and polishing by the mechanical action of abrasive grains; (2) mechanochemical grinding and polishing with chemical reaction and mechanical grinding; (3) using magnetorheological polishing fluid and rotating (4) Magnetic grinding using the magnetically adsorbed abrasive grains of the grinding tool and (5) Abrasive flow p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B1/00
Inventor 蔡光起李长河
Owner NORTHEASTERN UNIV LIAONING
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