KR100818456B1 - Structure for machine base and method of making thereof - Google Patents

Abstract

A machine base structure is provided to exhibit sufficient strength to replace the presently available machine base structure made of cast iron or natural granite, and have very low thermal deformation and the coefficient of thermal expansion, and excellent thermal shock resistance. A machine base structure is manufactured by injecting a mixture into a die, followed by hardening the mixture while performing vacuum deaeration. The mixture includes 10-40wt% of a binder of a thermosetting resin or inorganic-modified liquid resin comprising at least one selected from unsaturated polyester resins, epoxy resins, vinylester resins, acrylic resins, and silicone-based liquid modified resins, 10-60wt% of a ground aggregate comprising at least one selected from smashed granite, steel slag, bottom ash, and mill scale having an average particle size of 1-10 mm, 1-5wt% of an inorganic lightweight aggregate of a hollow spherical silica, hollow spherical glass, alumina, perlite, or fly ash balloon having an average particle size of 30-300 micron, 10-30wt% of an inorganic fine powder of an aluminum hydroxide, silica fume, or mica powder having an average particle size of 5-30 micron, and 5-20wt% of a fibrous material comprising at least one selected from carbon fiber, glass fiber, ceramic fiber, inorganic short fiber, aramid fiber, and metal fiber. Further, the mixture is mixed by blade-adhering concrete mixer.

Description

Structure for Machine Base and Method of Making

1 is a view showing a manufacturing process of a machine base structure according to the present invention,

Figure 2 shows an example in which an insert part is formed in the machine base structure according to the present invention.

Explanation of symbols on the main parts of the drawings

10 machine base structure 12 nut

14: conduit

The present invention relates to a machine base structure and a method for manufacturing the same, and in particular, various machine tools, medical tomography equipment, optical measuring instruments, electron microscopes, semiconductor production equipment, industrial machine equipment, etc. Machine base structure manufactured using aggregates other than metal or granite, and a manufacturing method thereof.

The machine base is usually made of cast iron or granite to absorb shocks or vibrations during use of the above devices, and is essential to ensure the stability of the device and the processing precision of the device.

In particular, for ultra-precision processing, not only the device itself, but also a sensing sensor, an electronic control device, etc., are required for the quietness of the machine base structure itself. In addition, it is urgent to develop a machine base structure that reduces noise and impact sounds of various machine tools such as vibrations of various drive motors installed in the machine base, shock waves and noises of the hydraulic and pneumatic devices, for precision machining.

However, until now, most machine tools and industrial and laboratory equipment are mainly made of natural stone granite or cast iron products, and these products have the disadvantages of complicated manufacturing process and high cost. There was a disadvantage of deterioration.

Particularly, the technology of simultaneously filling a material, which is integrally formed after wiring or arranging parts such as a conduit, a hydraulic pipe, a motor, and a pump in a mold, has not been applicable to conventional natural stones and casting products.

Accordingly, an object of the present invention is to solve the problems described above, and is a high strength that can replace the machine base structure such as cast products and natural granite currently being used, very low thermal deformation and thermal expansion rate, It is to provide a machine base structure excellent in thermal shock resistance and a method of manufacturing the same.

Another object of the present invention is to provide a machine base structure and a method for manufacturing the same, which can effectively absorb noise and vibration generated in various devices.

It is another object of the present invention to provide a machine base structure and a method of manufacturing the same, which produce products at one time by installing insert parts in a mold during molding the machine base structure.

Another object of the present invention is to provide a machine base structure and a method of manufacturing the same having excellent physical properties capable of exhibiting the maximum damping effect.

Another object of the present invention is to provide a machine base structure and a method of manufacturing the machine base having a complicated shape can be easily produced without a process such as machining or casting.

Machine base structure according to the present invention in order to achieve the above object is a binder thermosetting resin or inorganic modified liquid resin 10 to 40% by weight, crushed aggregate 10 to 60% by weight, inorganic lightweight aggregate 1 to 5% by weight, inorganic fine powder 10 The mixture which mixed -30 weight% and 5-20 weight% of fibrous materials is inject | poured into a metal mold | die, and it hardened | cured, degassing under vacuum. It is characterized by the above-mentioned.

In the machine base structure according to the present invention, the binder includes at least one of unsaturated polyester resin, epoxy resin, vinyl ester resin, acrylic resin and silicone-based liquid modified resin, and the crushed aggregate is crushed granite, steelmaking slug And at least one of bottom ash and mill scale, wherein the inorganic lightweight aggregate is hollow spherical silica, hollow spherical glass, alumina, pearlite or fly ash balloon, and the fine powder is aluminum hydroxide, silica fume or mica powder, and the fibrous The material is characterized in that it comprises at least one of carbon fiber, glass fiber, ceramic fiber, inorganic short fiber, aramid fiber and metal fiber.

Further, in the machine base structure according to the present invention, the average particle diameter of the pulverized aggregate is 1 to 10 mm, the average particle diameter of the inorganic lightweight aggregate is 30 to 300 μm, and the average particle diameter of the inorganic fine powder is 5 to 30. It is characterized by a micrometer.

In the machine base structure according to the present invention, the mixture is characterized in that the mixture is stirred and mixed with a concrete mixer with a blade.

In addition, in the machine base structure according to the present invention, the mold is characterized in that the insert is formed in the machine base is formed.

Moreover, in the machine base structure which concerns on this invention, the said mixture is characterized by adding 0.1 to 0.5 weight% of a coloring agent with respect to the said resin usage.

In addition, the manufacturing method of the machine base structure of the present invention for achieving the above object is 10 to 40% by weight thermosetting resin or inorganic modified liquid resin, 10 to 60% by weight crushed aggregate, 1 to 5% by weight inorganic lightweight aggregate, Raw material mixing step of mixing 10-30% by weight of inorganic fine powder, 5-20% by weight of fibrous material, mixture injection step of injecting the mixed mixture into a mold, vibrating and applying pressure to the mold, the injected mixture is a mold Vibrating and applying pressure to completely fill the mold, vacuum bag molding to seal the mold with a vacuum bag to remove bubbles contained in the mixture while the mixture is injected into the mold, and the mixture is injected into the mold. And vacuuming the vacuum bag in a sealed state with a vacuum bag to cure while removing bubbles. .

In addition, in the method of manufacturing a machine base structure according to the present invention, the mixture is characterized in that the mixing by stirring with a concrete mixer with a blade.

In addition, the manufacturing method of the machine base structure according to the invention, characterized in that it further comprises a bubble removing step of removing air from the mixture mixed in the raw material mixing step before the mixture injection step.

In addition, the manufacturing method of the machine base structure according to the present invention, before the mixture injection step is characterized in that the mold further comprises a mold assembly step of installing the insert parts formed in the machine base.

In addition, the manufacturing method of the machine base structure according to the present invention, after the curing step, characterized in that it further comprises the step of grinding the molded body by dismantling the mold.

Moreover, in the manufacturing method of the machine base structure which concerns on this invention, the said hardening is characterized by hardening by heating at 25-150 degreeC.

In the method for producing a machine base structure according to the present invention, the curing is performed for 10 to 24 hours.

In addition, the manufacturing method of the machine base structure of the present invention for achieving the above object is 10 to 40% by weight thermosetting resin or inorganic modified liquid resin, 10 to 60% by weight crushed aggregate, 1 to 5% by weight inorganic lightweight aggregate, Raw material mixing step of mixing 10-30% by weight of inorganic fine powder, 5-20% by weight of fibrous material, injection molding the mixed mixture with an injection machine, and 25-150 ° C. for 10-24 hours It is characterized by curing by heating to.

The above and other objects and novel features of the present invention will become more apparent from the description of the specification and the accompanying drawings.

First, the concept of the present invention will be described.

This machine base structure is mixed with thermosetting resin, crushed aggregate, light weight inorganic aggregate, inorganic fine powder, various fibrous materials and colored pigments as a binder, and injected into a mold such as a mold and vacuum degassed, vibrated, pressurized and heated. The machine base structure of the shape to be formed is molded.

More specifically, the composition of the raw material formulation is 10 to 40% by weight of the thermosetting resin as a binder, 20 to 60% by weight of crushed aggregate, 1 to 5% by weight of inorganic lightweight aggregate, 10 to 30% by weight of inorganic fine powder, and 5 to 20% by weight of fibrous material. And 0.1 to 0.5 weight% of the coloring pigment is added with respect to resin usage, and it mixes.

When the amount of resin used is less than 10% by weight in the composition of the raw material mixture, it is difficult to form a uniform film of the resin completely on the surface of various inorganic materials forming the skeleton, and it is difficult to form because there is little fluidity or adhesiveness of the mixed raw materials. This happens.

On the other hand, when the amount of the resin used exceeds 40% by weight, the fluidity and workability are good, but the economical efficiency due to the excessive use is inferior, and there is a concern that the physical properties such as compressive strength and tensile strength may be reduced.

The amount of the pulverized aggregate and the inorganic lightweight aggregate may vary depending on the purpose or type of use of the machine base structure, and may be adjusted and used in the above-described composition range.

When the amount of the inorganic lightweight aggregate is more than 5% by weight, the specific gravity of the lightweight aggregate is relatively small, so even if only a small amount of the structure is increased, the apparent specific gravity may decrease, which is not preferable.

When the amount of the inorganic fine powder is less than 10% by weight, it is difficult to completely fill the micro voids between the resin and the aggregate. When the amount of the inorganic fine powder is more than 30% by weight, the amount of the crushed aggregate is relatively decreased, so that the specific gravity of the machine base structure And a problem that causes a decrease in physical properties such as strength.

The thermosetting resin which is a binder may be used by mixing one or two or more unsaturated polyester resins, vinyl polyester resins, acrylic resins, epoxy resins, silicone-based liquid modified resins and the like. However, in order to improve basic performance, such as the strength and surface hardness of a machine base structure, unsaturated polyester resin is the most preferable.

The crushed aggregate can use various natural stone, crushed rock, steel slug, mill scale or coarse bottom ash generated from a thermal power plant.These crushed raw materials are used by sieving them to have an average particle diameter of 1 to 10 mm. desirable.

Table 1 shows the particle size distribution of the milled aggregate used in the composition for producing the machine base structure of the present invention.

[Table 1] Particle Size Distribution of Grinded Aggregates (Unit: wt%)

Mouth dildo Granite crushed stone Steelmaking slug Bottom ash 5 to 10 mm 10 15 12 10mesh-5mm 25 26 27 35 to 10mesh 24 27 25 65-35mesh 27 20 27 100-65mesh 13 10 8 Less than 100mesh One 2 One

The inorganic lightweight aggregate uses hollow spherical silica, hollow spherical glass, alumina and pearlite, fly ash balloon, and the like, and those having an average particle diameter of 30 to 300 µm are used.

The inorganic fine powder uses aluminum hydroxide, silica fume, mica powder, etc., and uses an average particle diameter of 5-30 micrometers.

As a fibrous material, carbon fiber, inorganic short fiber, glass fiber, ceramic fiber, aramid fiber, stainless fiber which is a metal fiber, etc. are used.

Colorants use iron oxide or cobalt oxide.

EMBODIMENT OF THE INVENTION Hereinafter, the manufacturing method of the machine base structure of this invention is demonstrated according to drawing.

1 is a view showing a manufacturing process of the machine base structure according to the present invention, Figure 2 is a view showing an example in which an insert part is formed in the machine base structure according to the present invention.

The coloring agent is mixed with the unsaturated polyester resin to be colored, and then mixed with pulverized aggregate, inorganic lightweight aggregate, inorganic fine powder, and fibrous material, followed by stirring with a concrete mixer with blades to sufficiently mix (step S10).

Before injecting the raw material mixed in the step S10 into the mold or the mold, vacuum degassing to completely remove bubbles in the mixed raw material (step S20).

For example, in order to manufacture the machine base structure 10 as shown in FIG. 2, the nut 12, which is an insert part in a mold or a mold, is embedded in the machine base structure 10 so that the nut 12 and the conduit 14 are embedded therein. 12), the conduit 14 and other necessary hydraulic piping, noise or the like components such as a motor or a pump that generates noise to assemble the mold or the mold (step S30). Here, the step of assembling the mold or the mold of step S30 may be performed before the raw material mixing step of step S10.

The mixture degassed in step S20 is injected into the mold or the mold assembled in step S30 (step S40).

In step S40, vibration and pressure are applied to the mold or the mold into which the mixture is injected, and vibration and pressure are applied to completely fill the mold or the mold (step S50).

In step 50, when the mixture is completely filled in the mold or the mold, the mold or the mold is sealed with a vacuum bag of synthetic vinyl or synthetic rubber to completely remove bubbles contained in the mixture (step S60).

In step S60, the mixture is injected into a mold, and the vacuum bag is evacuated while being sealed with a vacuum bag, and then heated to 25 to 150 ° C. for 10 to 24 hours while removing bubbles contained in the mixture (step S70).

After hardening the mixture in step S70, the mold or mold is dismantled (step S80).

The molded body dismantled in step S80 is polished (step S90).

Hereinafter, preferred embodiments according to the kind of mixture for producing the machine base structure of the present invention will be described.

Example 1

18 wt% unsaturated polyester resin as binder, 60 wt% crushed granite as crushed aggregate, 2 wt% hollow spherical glass as inorganic lightweight aggregate, 10 wt% inorganic fine powder aluminum hydroxide, 5 wt% carbon fiber and inorganic as fibrous material 5 wt% of short fibers and 0.1 wt% of iron oxide, which is a pigment for coloring, are added to the amount of resin used, and these are mixed thoroughly with a mixer with a blade for mixing concrete, followed by vacuum degassing to completely remove air bubbles in the blend. It injected into molds, such as a suitably designed mold, and vibrated and pressed and shape | molded, and the shape | molded molded object was heated and hardened at 25-60 degreeC.

Example 2

10% by weight of epoxy resin as binder, 30% by weight of crushed granite and 35% by weight of steelmaking slug, 5% by weight of hollow spherical silica as inorganic lightweight aggregate, 10% by weight of silica fume as inorganic fine powder, carbon fiber 5 as fiber material 0.1% by weight was added to the amount of resin by weight, 5% by weight of stainless fiber and iron oxide as a pigment for coloring, and the subsequent steps were mixed, molded and cured in the same manner as in Example 1.

Example 3

10% by weight of silicone-based modified liquid resin as binder, 40% by weight of crushed granite and 10% by weight of ash ash, 10% by weight of aluminum hydroxide and 10% by weight of mica, 5% by weight of carbon fiber as inorganic material, inorganic 5% by weight of short fibers, 5% by weight of glass fibers, 5% by weight of aramid fibers, and cobalt oxide, which is a coloring pigment, were added in an amount of 0.1% by weight based on the amount of resin used, and the subsequent steps were mixed and molded in the same manner as in Example 1. And cured.

Comparative Example 1

A machine base structure cast from a common spherical graphite ductile cast iron product.

In general, ductile cast iron has a tensile strength comparable to that of structural steel, stronger than cast steel, and has an elongation of about 20%.

Table 2 shows the physical properties of the machine base structure produced by the above Examples and Comparative Examples.

[Table 2] Properties of Machine Base Structure

As can be seen from Table 2, it can be seen that the mechanical properties such as compressive strength and tensile strength of the machine base structure according to the present invention are similar to the casting agent.

It can be seen that the density of the machine base structure according to the present invention is smaller than that of the casting agent, is excellent in chemical resistance, and has a low specific heat and coefficient of thermal expansion.

Therefore, it can be seen that the machine base structure according to the present invention has excellent heat, thermal shock resistance, elasticity, and the like, compared to the machine base structure of cast iron products.

As mentioned above, although the manufacturing method of shape | molding the machine base structure of this invention with a metal mold | die or a mold was demonstrated as an Example, it can also manufacture by injection-molding with an injection molding machine, depending on the kind of apparatus.

Although the invention made by the present inventors has been described in detail according to the above embodiments, the present invention is not limited to the above embodiments and can be variously changed without departing from the gist thereof.

As described above, according to the machine base structure and the manufacturing method thereof according to the present invention, it is possible to replace the machine base structure such as casting products and natural granite, and has high thermal deformation and thermal expansion coefficient with very high strength, and thermal shock resistance Excellent effect is obtained.

Moreover, according to the machine base structure and its manufacturing method which concern on this invention, the effect which can effectively absorb the noise and vibration which generate | occur | produce in various apparatuses is acquired.

Moreover, according to the machine base structure and its manufacturing method which concern on this invention, the effect which can produce a product at once by providing an insert part in a metal mold | die at the time of shaping | molding of a machine base structure is acquired.

Moreover, according to the machine base structure and its manufacturing method which concern on this invention, the effect excellent in all the physical characteristics which can exhibit the damping effect to the maximum is acquired.

Moreover, according to the machine base structure and its manufacturing method which concern on this invention, the effect which can manufacture easily the machine base which has a complicated shape without going through processes, such as a machining and casting, is acquired.

In addition, according to the machine base structure and the manufacturing method thereof according to the present invention, the manufacturing process is simple and inexpensive compared to the existing cast products, natural granite, etc. structure, and can be effectively used as the base structure of various devices, It can also be used for laboratory tables, system kitchen mounting, artificial marble for building, and mold tables for molds.

Claims (14)

delete delete 10 to 40% by weight of a binder of a thermosetting resin or an inorganic modified liquid resin including at least one of an unsaturated polyester resin, an epoxy resin, a vinyl ester resin, an acrylic resin and a silicone-based liquid modified resin, 10 to 60% by weight of crushed aggregate containing at least one of crushed granite, steelmaking slug, bottom ash and mill scale with an average particle diameter of 1 to 10 mm, 1 to 5% by weight of inorganic lightweight aggregate of hollow spherical silica, hollow spherical glass, alumina, pearlite or fly ash balloon having an average particle diameter of 30 to 300 µm,  10-30% by weight of inorganic fine powder of aluminum hydroxide, silica fume or mica powder with an average particle diameter of 5-30 μm, 5 to 20% by weight of fibrous material comprising at least one of carbon fiber, glass fiber, ceramic fiber, inorganic short fiber, aramid fiber and metal fiber The machine base structure characterized by inject | pouring the mixture which mixed this into the metal mold | die, and hardening under vacuum deaeration. The method of claim 3, wherein The mixture is a machine base structure, characterized in that mixed by stirring with a concrete mixer with a blade. The method of claim 3, wherein Machine mold structure, characterized in that the insert is formed in the mold is formed in the machine base. The method according to any one of claims 3 to 5, The mixture is a machine base structure, characterized in that the addition of 0.1 to 0.5% by weight of the colorant relative to the amount of the resin used. 10 to 40% by weight thermosetting resin or inorganic modified liquid resin, 10 to 60% by weight crushed aggregate, 1 to 5% by weight inorganic lightweight aggregate, 10 to 30% by weight inorganic fine powder, 5 to 20% by weight fibrous material Raw material mixing step, A mixture injection step of injecting the mixed mixture into a mold; Applying vibration and pressure to the mold to apply vibration and pressure to completely fill the mold with the injected mixture, Vacuum bag molding step of sealing the mold in a vacuum bag to remove the bubbles contained in the mixture while the mixture is injected into the mold, And a curing step of curing the vacuum bag by vacuuming the vacuum bag while the mixture is injected into a mold and sealed with a vacuum bag. The method of claim 7, wherein And the mixture is mixed by stirring with a concrete mixer with a blade. The method of claim 7, wherein Method for producing a machine base structure characterized in that it further comprises a bubble removing step of removing air from the mixture mixed in the raw material mixing step before the mixture injection step. The method of claim 7, wherein And a mold assembly step of installing an insert part formed in the machine base in the mold before the mixture injection step. The method of claim 7, wherein And dismantling the mold after the hardening step to grind the hardened molded body. The method according to any one of claims 7 to 11, And said hardening is hardened by heating at 25-150 degreeC. The method of claim 12, And wherein the curing takes place for 10 to 24 hours. 10 to 40% by weight thermosetting resin or inorganic modified liquid resin, 10 to 60% by weight crushed aggregate, 1 to 5% by weight inorganic lightweight aggregate, 10 to 30% by weight inorganic fine powder, 5 to 20% by weight fibrous material Raw material mixing step, Injection molding the mixed mixture with an injection molding machine, And the injection molded molded body is cured by heating to 25 to 150 DEG C for 10 to 24 hours.

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