KR101334387B1 - Abrasive air jet machining apparatus with a function of heat treatment - Google Patents

Abstract

Fine particles are accelerated by high pressure air pressure to process the surface of the base material using the collision energy, and at the same time, the heat treatment function improves the workability by irradiating laser light or spraying cold / hot compressed air to the base material surface. Disclosed is a particle spray processing apparatus.
According to an embodiment of the present invention, the high pressure air supply unit for supplying high pressure air and the fine particle supply unit for supplying the fine particles mixed with the high pressure air, the fine particles placed on the upper side of the base material and accelerated by mixing with the high pressure air of the base material Hot or cold heat treatment of the surface of the base material processed by the injection of fine particles by controlling the temperature of the nozzle and the nozzle provided to spray the surface to perform the set pattern processing and the high-pressure air supplied to the nozzle to a high temperature or low temperature It provides a fine particle spray processing apparatus having a heat treatment function including a heat treatment control unit for controlling the temperature control of the heat treatment control unit for hot heat treatment of the surface of the base material processed by the injection of the fine particles by irradiation of the beam.

Description

Abrasive particle processing apparatus with heat treatment function {ABRASIVE AIR JET MACHINING APPARATUS WITH A FUNCTION OF HEAT TREATMENT}

The present invention relates to a fine particle spray processing apparatus having a heat treatment function, and more particularly, to accelerate the fine particles by the high pressure air pressure and to process the surface of the base material using the impact energy to irradiate the laser through the nozzle or The present invention relates to a fine particle spray processing apparatus having a heat treatment function in which cold / hot compressed air is injected to improve workability.

Korean Patent No. 0324088, which is a prior art, discloses a surface treatment method of a steel workpiece.

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Korean Patent No. 0324088 projects a number of hard metal particles of 20-100 μm to a collision speed of 80 m / sec or more onto the surface of a steel providing crop. At this time, a technique is disclosed in which the collision speed is controlled so that the temperature limit of the workpiece surface due to the collision is higher than 150 ° C., so that the temperature is lower than the temperature causing recovery recrystallization and austenitization of steel.

However, Korean Patent No. 0324088 has a problem that the precision of the surface of the workpiece is difficult because the temperature of the workpiece is set by the projection time and the projection speed at which the metal particles collide with the workpiece surface.

Korean Patent Laid-Open Publication No. 2003-0058971 discloses a particulate abrasive spray metal surface treatment apparatus.

Korean Patent Laid-Open Publication No. 2003-0058971 discloses that when the metal article 100 is charged into the chamber 40 by the transfer device 10 as shown in FIG. 3, the metal article 100 transferred through the injection nozzle 30 is provided. A particulate abrasive spray type metal surface treatment apparatus for processing a metal surface by injecting a particulate abrasive into the surface. When the workpiece is processed in the chamber (40), the position of the workpiece in the high pressure air for spraying the abrasive is There is provided a particulate abrasive spray metal surface treatment apparatus that is not affected.

Another prior art, Korean Patent Laid-Open Publication No. 2002-0033564, provides a high precision blast processing method and a high precision blast processing apparatus.

 Korean Patent Laid-Open Publication No. 2002-0033564 discloses a blasting method in which a jetting material is injected from a nozzle 3 by compressed air to process the substrate 1 in a blast process as shown in FIG. Intermittent and repeated injections may be used, or a combination of such intermittent and continuous injections may be used. Thereby, even if a process is advanced, it does not reduce processing efficiency, and it does not damage a non-processing part, even if it does not mask.

In other words, Korean Laid-Open Patent Publication No. 2002-0033564 discloses a work table 4 for horizontally and vertically moving the nozzle unit 2 and the substrate 1, which pressurizes the injection material to the nozzle 3 by compressed air. A control device for outputting an intermittent actuation signal to the solenoid valve 5 and the solenoid valve 5 which are responsible for the injection and stop of the injection material. (6) is connected.

However, the above-mentioned prior arts, Korean Patent Laid-Open Publication No. 2003-0058971 and 2002-0033564, respectively, do not have a configuration for adjusting the temperature of the pressure air itself, so that hot work or cold work of the workpiece is difficult. there is a problem.

Recently, the development of micro / nano technology has found that micro / nano pattern shapes formed on the surface impart various characteristics in addition to the conventional tribological characteristics. surface). As a result, research on the characteristics that can be given according to the pattern shape of the functional surface as well as the characteristics according to the surface material has begun to actively proceed.

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As a processing method for processing a micro / nano pattern shape, recently introduced is a processing method using lithography, a processing method using an electron beam, a processing method using a laser beam, and the like. have. In addition, technologies such as EDM (Electric Discharge Machining), Electro-Chemical Machining (ECM), and Wire Electric Discharge Machining (WEDM), which are processed using electrical discharge, are also widely used. In addition, the imprint method, which is used for mass production of large-scale patterns, is also actively applied in recent years.

Abrasive Air Jet Machining is a method of processing materials by erosion of materials by using collision energy generated when the microparticles are accelerated to high pressure air and sprayed on the base material.

Such fine particle spraying can easily process hard materials with low cost equipment. Particularly, the fine particle spraying process is a process that does not crack crack, and it is economical compared to using a light source, there is no processing alteration layer, the processing time is shorter than the chemical method, and the processing efficiency is higher than other processing methods such as ultrasonic processing. There is this.

However, in order to further improve the processability by using the conventional fine particle spray processing apparatus alone, there is a growing interest in various methods that can be helpful in processing, but the prior art presented above solves these problems. It is not fundamentally solved.

Korean Patent Registration No. 0324088, Korean Patent Publication No. 2003-0058971, Korean Patent Application Publication No. 2002-0033564, US Patent Registration No. 8282275

The present invention accelerates the fine particles by high pressure air pressure to process the pattern or shape on the surface of the base material using the collision energy and at the same time before or after the fine particles having a heat treatment function that can heat or cold treatment the surface of the base material Provide a spray processing apparatus.

The problem to be solved by the present invention is not limited to the above-mentioned problem, another problem that is not mentioned here will be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, a high pressure air supply for supplying high pressure air; A fine particle supply unit supplying fine particles mixed with the high pressure air; A nozzle provided to spray the fine particles accelerated by mixing with the high pressure air toward the surface of the base material to perform a set pattern processing; A heat treatment controller configured to adjust the temperature of the high pressure air supplied to the nozzle to a high temperature or a low temperature; And a control unit for controlling the heat treatment control unit, wherein the heat treatment control unit heats the high pressure air to hot work the surface of the base material processed by the injection of the fine particles, or cools the high pressure air to It includes a fine particle spray processing apparatus having a heat treatment function of the base material to enable the cold working of the surface of the base material processed by the injection.

In addition, the outlet of the nozzle includes a fine particle spray processing apparatus which is placed on the upper side of the base material, and has a heat treatment function spaced apart from the surface of the base material by a predetermined interval and disposed to face the upper surface of the base material.

The heat treatment controller may further include a temperature controller configured to electrically heat or cool the high pressure air by receiving an output signal from the controller, and when the base material is a soft material, cools the high pressure air to a low temperature to fine particles. By cold work is carried out, and the base material is a brittle or rigid material includes a fine particle spray processing apparatus having a heat treatment function to heat the high-pressure air to a high temperature to perform a hot work by the fine particles.

According to the present invention as described above, the following effects can be obtained.

First, by taking the configuration of heating or cooling the temperature of the high-pressure air to give processing characteristics according to the workpiece to be tailored according to the physical properties of the workpiece has the advantage that the workability of the workpiece is maximized.

Secondly, since the fine particles are accelerated by the high pressure air pressure and the pattern or shape is processed on the surface of the base material using the collision energy, the configuration of the device is simplified.

Third, when the base material is a soft material, since a lot of elastic deformation occurs during processing, the workability can be improved by lowering the temperature of the base material through cold working.

Fourth, in the opposite case, when the base material is a brittle material or a rigid material, workability can be improved by increasing the temperature of the base material through hot working.

Fifth, it is easy to process hard materials with low cost equipment.

Sixth, the fine particle spray processing of the present invention is a processing method that does not crack crack, there is an economical advantage compared to using a light source.

Seventh, there is no processing deterioration layer, the processing time is shorter than the chemical method, and the processing efficiency is higher than other processing methods such as ultrasonic processing.

1 is an overall configuration diagram schematically showing a fine particle spray processing apparatus having a heat treatment function according to a preferred embodiment of the present invention.
Figure 2 is an operating state showing the state that the base material is hot working or cold processing by the hot or cold compressed air injected through the nozzle in the fine particle spray processing apparatus having a heat treatment function according to a preferred embodiment of the present invention.
Figure 3 is a state diagram of the prior art.
4 is another state of the art.

Hereinafter, with reference to the accompanying drawings it will be described with respect to the fine particle spray processing apparatus having a heat treatment function according to a preferred embodiment of the present invention (hereinafter referred to as 'microparticle spray processing apparatus').

Brief Description of the Drawings The advantages and features of the present invention, and how to achieve them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited by the embodiments disclosed below but may be embodied in various different forms. The embodiments to be described herein are provided so that the disclosure of the present invention is complete and that those skilled in the art will fully understand the scope of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

In the drawings, Figures 1 and 2 is a view showing for explaining the fine particle spray processing apparatus according to an embodiment of the present invention,

Embodiment of the present invention is applied to a method of adjusting the temperature of the compressed air is injected at high pressure with the fine particles through the nozzle as an embodiment of the heat treatment means. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration diagram schematically showing a fine particle spray processing apparatus according to a first embodiment of the present invention.

Referring to Figure 1, the fine particle injection processing apparatus 100 according to the first embodiment shown, a nozzle for injecting the accelerated fine particles (P) mixed with high pressure air (air) to the surface of the base material (S) 110 and a heat treatment control unit 120 for controlling the temperature of the high-pressure air supplied to the nozzle to a high temperature or a low temperature to heat or cold heat-treat the surface of the base material processed by the injection of the fine particles, and the fine particle supply unit. 140 and the high pressure air supply unit 150.

The nozzle 110 is arrange | positioned on the upper side of the to-be-processed object (henceforth a "base material") S. This nozzle 110 is provided with an internal hollow formed through the longitudinal direction as is conventionally known. That is, the inlet 115 of the nozzle is open so that the high pressure air (air) and the fine particles (P) can be introduced, the outlet 117 of the nozzle is the high pressure air (air) and the fine particles (P) the base material (S) It has an open structure to be sprayed toward the surface of the). However, the cross-sectional structure of the illustrated nozzle 110 is briefly illustrated for convenience of description, and may be slightly different in different shapes. As an example, an embodiment in which the inlet through which the fine particles P are introduced and the inlet through which the high pressure air is introduced through the nozzle 110 may be separately included in the scope of the present invention.

The outlet 117 of the nozzle is spaced apart from the surface of the base material by a predetermined distance so as to face the upper surface of the base material. Although not shown separately through the drawings, in the case of the nozzle 110 according to the present invention, the height may be adjusted in a vertical direction, and a rotation operation may be implemented in a clockwise or counterclockwise direction with respect to the center. In addition, the nozzle 110 may be formed of a structure capable of multi-axis transfer in the horizontal direction. According to this function, the distance between the outlet 117 of the nozzle and the base material S may be adjusted before or during the machining operation by the user's selection.

As a result, the fine particles P mixed and injected into the high pressure air through the nozzle 110 collide with the surface of the base material S to perform pattern processing by erosion or wear (that is, erosion). The processing site (S ′) of the base material eroded or worn by this pattern processing can be confirmed through the drawings.

The heat treatment adjusting unit 120 is an air temperature adjusting means for controlling the temperature of the high pressure air supplied to the nozzle 110 to a high temperature or a low temperature. It can be adjusted by cold working. That is, at the same time as the impact processing of the fine particles injected through the nozzle 110, by adjusting the temperature conditions of the high-pressure air (air) injected toward the base material (S) to a high temperature or low temperature state, hot work or cold work is performed. It can be carried out selectively.

The heat treatment controller 120 includes a temperature controller 121 that is installed on a pipe to which high pressure air is supplied and is electrically heated or cooled. Specific embodiments of the temperature controller 121 do not need to be limited. The heating and cooling operation of the temperature controller 121 may be implemented by the command C of the controller 123.

The control unit 123 may transmit an output signal for applying the command C to the temperature controller 121 according to a pre-stored operation program, as well as wired / wireless communication to receive a command input from a user. It may further include a separate operation switch 125 connected to.

In particular, the operating state of the heat treatment control unit 120 may vary depending on the material properties of the base material S. For this, reference may be made to FIG. 2.

Figure 2 is an operating state diagram showing the state that the base material is hot working or cold working by the hot or cold compressed air injected through the nozzle in the fine particle spray processing apparatus having a heat treatment function according to an embodiment of the present invention.

First, referring to FIG. 2 (a), the operating state of the heat treatment control unit (120 of FIG. 1) when the base material (S) is a brittle or rigid material. When the base material S is a brittle or rigid material, no matter how hard the fine particles P injected together with the high pressure air through the nozzle 110, workability of the base material S is deteriorated. Therefore, hot processing is performed by heating the temperature of the high pressure air (Th ° C) as necessary. As a result, workability can be improved.

On the contrary, referring to FIG. 2 (b), the operating state of the heat treatment control unit 120 of FIG. 1 when the base material S is a soft material. When the base material S is a soft material, when the fine particles P injected together with the high pressure air through the nozzle 110 collide with the surface of the base material S, a lot of elastic deformation occurs in the processing region S ′. do. Therefore, cold working is performed by cooling the temperature (TL ° C.) of the high pressure air as necessary. As a result, workability can be improved.

Referring back to FIG. 1, the high pressure air supply unit 150 is configured to supply high pressure air into the nozzle 110, and is fine on a pipe for supplying high pressure air, that is, a high pressure air supply line. Fine particle supply unit 140 for supplying the particles (P) may be connected to be installed. However, the illustrated embodiment shows that the supply line of the high pressure air and the supply line of the fine particles are formed through a single pipe, but these supply lines may be separately branched toward the nozzles 110, respectively.

In particular, the high-pressure air supply unit 150 is a detailed configuration, the high-pressure air storage unit 151 and the high-pressure air drying unit is installed on the high-pressure air supply line connected to the pipe from the high-pressure air storage unit to the nozzle to dry the high-pressure air 153 and a valve unit 155 for adjusting the flow opening and closing of the high pressure air.

Here, the high pressure air storage unit 151 refers to an air tank for compressing and storing air in a high pressure state, and the valve unit 155 is connected to a flow control command of the high pressure air controller 130 connected through a high pressure air supply line. Solenoid valves electrically controlled by the present invention can be used.

On the other hand, the inside of the high-pressure air controller 130, although not shown separately may be provided with a receiving space in which the high-pressure air flows at a high speed, the amount of fine particles set through the fine particle supply unit 140 connected to the receiving space ( P) can be supplied and mixed with high pressure air heated or cooled to a set temperature. According to this operating structure, the fine particles (P) are mixed in the heated or cooled high-pressure air (air) and then sprayed to the surface of the base material (S) through the nozzle 110 to process a predetermined pattern shape.

As described above, the fine particle spray processing apparatus having the heat treatment function according to the embodiments of the present invention accelerates the fine particles by high pressure air pressure and processes the pattern or shape on the surface of the base material using the collision energy. At the same time or before and after the surface of the base material can be heat-treated at high temperature or cold temperature. This improves the processability of the device.

And according to the embodiment for adjusting the temperature of the high-pressure air injected at high pressure through the nozzle of the fine particle injection processing device, it can be adjusted to a low temperature or a high temperature of the high-pressure air depending on the processing conditions cold processing or hot processing Both of these can secure processing characteristics that can be enabled.

In particular, according to this embodiment, when the base material is a soft material in consideration of the frequent occurrence of elastic deformation during processing can be performed by cold working to lower the temperature of the base material can be improved workability. On the contrary, when the base material is a brittle material or a rigid material, hot air may be exposed on the surface of the base material to improve workability through hot working.

In the above it has been described with respect to preferred embodiments of the fine particle spray processing apparatus having a heat treatment function according to the present invention. It is to be understood that the foregoing embodiments are illustrative in all respects and not restrictive, the scope of the invention being indicated by the claims that follow, rather than the foregoing description, and the meaning and scope of the claims and their All changes or modifications derived from equivalent concepts should be construed as being included in the scope of the present invention.

P: fine particles S: object to be processed (ie, base material)
100: fine particle spray processing apparatus according to an embodiment of the present invention
110: nozzle 115: inlet of the nozzle
117: outlet of the nozzle 120: heat treatment adjusting portion
121: temperature controller 123: control unit
125: operation switch 130: high pressure air controller
140: fine particle supply unit 150: high pressure air supply unit
151: high pressure air storage unit 153: high pressure air drying unit
155: valve portion

Claims (3)

A high pressure air supply unit 150 including a high pressure air storage unit 151 and a valve unit 155 provided on a high pressure air supply line connected to the high pressure air storage unit 151;
A high pressure air controller (130) connected to the valve unit (155) through the high pressure air supply line and controlling the valve unit (155);
A fine particle supply unit 140 connected to an accommodation space provided in the high pressure air controller 130 and supplying the fine particles P to the accommodation space;
The nozzle 110 is installed in the high pressure air supply line, and sprays fine particles P accelerated by mixing with the high pressure air in the high pressure air controller 130 toward the surface of the base material S to perform the set pattern processing. ;
A heat treatment controller 120 installed in the high pressure air supply line and adjusting a temperature of the high pressure air supplied to the high pressure air controller 130 to a high temperature or a low temperature; And
Control unit 123 for controlling the heat treatment control unit 120; including,
The heat treatment control unit 120 heats the high pressure air to hot work the surface of the base material (S) to be processed by the injection of the fine particles (P), or by cooling the high pressure air of the fine particles (P) The fine particle spray processing apparatus having a heat treatment function, characterized in that configured to be able to cold work the surface of the base material (S) to be processed by the injection.
The method according to claim 1,
The outlet of the nozzle 110 is,
The fine particle injection processing apparatus is installed on the upper side of the base material (S), the heat treatment function is spaced apart from the surface of the base material (S) by a set interval facing the upper surface of the base material (S).
The method according to claim 1,
The heat treatment adjusting unit 120,
Including a temperature controller 121 for electrically heating or cooling the high-pressure air by receiving the output signal of the control unit 123,
When the base material (S) is a soft material, the high-pressure air is cooled to low temperature to perform cold processing by fine particles, and when the base material (S) is brittle or rigid material, the high pressure air is heated to a high temperature to fine particles A fine particle spray processing apparatus having a heat treatment function for performing hot working by (P).

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