KR20150133936A

KR20150133936A - Manufacuring method of mold and manufacturing method of propeller for ship using the same

Info

Publication number: KR20150133936A
Application number: KR1020140060501A
Authority: KR
Inventors: 정창욱; 신상룡; 전득재; 권용섭; 강성필
Original assignee: 현대중공업 주식회사
Priority date: 2014-05-20
Filing date: 2014-05-20
Publication date: 2015-12-01

Abstract

A mold making method is disclosed.
A method of manufacturing a mold according to an embodiment of the present invention includes a dummy block disposing step of disposing a dummy block to be processed into a mold in a processing stage; A robot alignment step of aligning the processing robot to a processing position; And a processing step of processing the dummy block with the processing robot to form a mold; . &Lt; / RTI >

Description

TECHNICAL FIELD [0001] The present invention relates to a method for manufacturing a casting propeller,

The present invention relates to a method of making a casting mold and a method of manufacturing a propeller for a ship using the same, and more particularly, to a method of manufacturing a casting mold by processing a dummy block with a processing robot and a propeller manufacturing method using the same.

Ship propellers are generally manufactured by casting.

To do this, we first make a casting mold for the marine propeller. Then, a high-temperature molten metal is injected into the mold. When the high temperature molten metal injected into the mold is cooled to a predetermined temperature, a casting is made in the mold.

Thereafter, the casting mold is separated from the casting, and the casting is subjected to post-treatment such as heat treatment, surface grinding, or plating or painting to produce a marine propeller.

Conventionally, a casting mold for casting of such a ship propeller mainly uses cement as a point filling material.

Then, a mold was manufactured through the process of making a wooden mold called "gauge", installing the manufactured wooden mold, forming the upper, lower mold, upper and lower mold, and disassembling the mold.

In this way, since the mold was manufactured through a relatively large number of processes in the past, it took a lot of time and cost to manufacture the mold, and thus it took a lot of time and cost to manufacture the propeller using the mold.

Further, since the molds are manufactured by a number of processes, manufacturing errors in each process are accumulated, and the processing accuracy of the mold production is not high.

The present invention is realized by recognizing at least any one of the above-mentioned conventional needs or problems.

One aspect of the object of the present invention is to simplify the process of making the mold.

Another aspect of the object of the present invention is to reduce the time and cost of mold production.

Another aspect of the object of the present invention is to increase the processing precision of the mold production.

Another aspect of the object of the present invention is to reduce the time and cost spent in manufacturing the ship propeller.

A method of manufacturing a casting mold and a method of manufacturing a propeller for a ship using the same according to an embodiment for realizing at least one of the above problems may include the following features.

A method of manufacturing a mold according to an embodiment of the present invention includes a dummy block disposing step of disposing a dummy block to be processed into a mold in a processing stage; A robot alignment step of aligning the processing robot to a processing position; And a processing step of processing a dummy block with a processing robot to form a mold; . &Lt; / RTI >

In this case, the dummy block may include furan resin and silica sand.

Further, the processing stage may be a plate.

In the machining step, the machining robot can move around the machining stage.

Also, a rail on which the processing robot moves may be provided around the processing stage.

Then, in the machining step, the machining stage can be rotated.

Further, in the processing step, the processing robot may be positioned on the dummy block.

A method for manufacturing a propeller for a ship according to an embodiment of the present invention includes the steps of preparing a mold for forming an upper mold and a lower mold for making a ship propeller by the above-mentioned mold making method; A mold assembling step of assembling the upper mold and the lower mold; A molten metal injection step of injecting molten metal into the assembled upper and lower molds to form a marine propeller casting; And a mold separating step of separating the upper mold and the lower mold from the marine propeller casting; . &Lt; / RTI >

As described above, according to the embodiment of the present invention, since the dummy block is processed by the processing robot to produce the mold, the process of manufacturing the mold can be simplified.

Further, according to the embodiment of the present invention, it is possible to reduce the time and cost required for manufacturing the mold.

Further, according to the embodiment of the present invention, it is possible to increase the processing accuracy of the mold production.

In addition, according to the embodiment of the present invention, it is possible to reduce the time and cost spent in manufacturing the ship propeller.

1 is a view showing an embodiment of a mold making method according to the present invention.
2 is an enlarged view showing processing of a dummy block with a processing robot in a processing step of an embodiment of the method for manufacturing a mold according to the present invention.
Figs. 3 to 5 are views showing embodiments of processing steps included in an embodiment of a mold making method according to the present invention.
6 is a view showing an embodiment of a propeller manufacturing method according to the present invention.

In order to facilitate understanding of the features of the present invention as described above, a casting mold manufacturing method and a propeller manufacturing method using the same according to an embodiment of the present invention will be described in detail below.

Hereinafter, exemplary embodiments will be described based on embodiments best suited for understanding the technical characteristics of the present invention, and the technical features of the present invention are not limited by the illustrated embodiments, It is to be understood that the present invention may be implemented as illustrated embodiments. Therefore, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. In order to facilitate understanding of the embodiments to be described below, in the reference numerals shown in the accompanying drawings, among the constituent elements which perform the same function in each embodiment, the related constituent elements are indicated by the same or an extension line number.

Fig. 1 is a view showing an embodiment of a method for manufacturing a mold according to the present invention. Fig. 2 is an enlarged view showing processing of a dummy block with a processing robot in a processing step of an embodiment of the method for manufacturing a mold according to the present invention, Figs. 3 to 5 are views showing embodiments of processing steps included in an embodiment of a mold making method according to the present invention.

One embodiment of the mold making method according to the present invention may include a dummy block arranging step (S100), a robot aligning step (S200), and a processing step (S300) as shown in FIG.

In the dummy block arrangement step (S100), the dummy block (DB) to be processed into a mold can be placed in the processing stage (S).

The dummy block DB may be disposed in the processing stage S by a crane (not shown) or the like. However, the method of disposing the dummy block DB in the machining stage S is not particularly limited, and any known method such as being disposed in the machining stage S by another transfer device such as a forklift other than a crane can be used .

The dummy block (DB) may comprise silica and furan resin. In this case, a dummy block (DB) is formed by mixing fly ash, which is a liquid obtained by heat-decomposing the grain, into silica sand.

Furan resin contained in the dummy block (DB) is a molding material having excellent heat resistance, abrasion resistance, acid resistance and alkali resistance, and enables the regeneration of silica sand.

The dummy block DB including the flange resin has a fastening speed of the casting CA made by injecting the molten metal MS into the mold, that is, a cooling rate is fast and the surface is clean. In addition, a high-strength mold can be obtained even with a small amount of the flanan resin. Since the dummy block DB including the flange resin is not relatively hard, it is easy to process.

Therefore, the dummy block DB can be easily processed as a mold by the processing robot RB.

The processing stage S on which the dummy block DB is disposed may be a plate. Since the coordinates can be set easily and precisely when the machining stage S is a front face, the dummy block DB can be easily and precisely machined by the machining robot RB.

However, the machining stage S is not particularly limited, and any known machining can be used as long as the dummy block DB can be disposed so as to be machined by the machining robot RB.

In the robot alignment step S200, the processing robot RB can be aligned to a processing position of the dummy block DB, that is, a position where the dummy block DB can be processed well.

For example, in the robot alignment step (S200), the processing robot (RB) is first disposed outside the processing stage (S) close to the dummy block (DB) to be machined by a crane or the like.

For this purpose, the processing robot RB is installed on a support stage SS provided with a hook hanger HK to which a hook (not shown) of a crane can be hooked, as shown in FIG. 2, .

It is also possible to mark the machining position on the machining stage S or use a fixing pin.

After the machining robot RB is transferred to the outside of the machining stage S, the center of the dummy block DB to be machined coincides with the center of the machining robot RB. Thus, the processing robot RB is aligned at the machining position.

5, in the robot alignment step S200 in which the machining robot RB is positioned on the dummy block DB and the dummy block DB is machined as a mold, the machining robot RB is moved to the dummy block DB Aligned at a processing position above a predetermined height from the center of the workpiece DB.

However, the method of aligning the processing robot RB to the processing position of the dummy block DB is not particularly limited, and any known method such as being aligned by a separately manufactured alignment device (not shown) is possible.

In the processing step S300, the dummy block DB is processed with the processing robot RB to form the template M.

As shown in FIG. 2, the processing robot RB may be a commercial robot generally used or used in other processes. For example, a processing robot (RB) for connecting the extension rod (LE) to the commercial robot and connecting the extension rod (LE) to the dummy block (DB) Can be used.

The processing robot RB may be provided with a suction processing device, not shown, for sucking and processing powder and lumps of the dummy block DB generated while processing the dummy block DB. In the processing robot (RB) as shown in Fig. 2, one side of the suction processing device is disposed along the above-described extension rod LE and its end is positioned adjacent to the above-described processing tool PT.

However, the machining robot RB for machining the dummy block DB is not particularly limited, and any known machining can be used, for example, by separately fabricating and using the machining tool.

The dummy block DB is machined, that is, cut into the shape of a desired mold by the processing robot RB to produce a mold.

When the dummy block DB is processed into a mold using the processing robot RB, data on the shape of the mold can be created by using the data on the shape of the casting such as propeller for a ship made by the mold first. Then, the dummy block DB can be processed into a mold by inputting the data on the shape of the mold into a mold machining program that can be linked to the operation program of the machining robot RB to operate the machining robot RB.

However, the method of machining the dummy block DB into a mold using the processing robot RB is not particularly limited, and any known method such as the above-described process may be performed by one program in a lump.

On the other hand, in the machining step S300, the machining robot RB can move around the machining stage S as shown in Fig.

For this purpose, a rail R on which the above-described support stage SS, on which the machining robot RB or the machining robot RB is mounted, as shown in the figure may be provided around the machining stage S.

However, the processing robot RB may be provided with a wheel or the like to move around the processing stage S.

Thereby, it is possible to make a mold of a complex shape or a plurality of templates by using one processing robot (RB).

Further, as shown in Fig. 4, the machining stage S can be rotated in machining step S300. For example, the processing stage S may be provided with a rotating shaft connected to a motor (not shown) and rotated by the rotation of the rotating shaft by the motor. Accordingly, it is possible to make a mold of a complex shape or a plurality of molds by using one processing robot (RB) that does not move.

Then, in the machining step S300, the processing robot RB may be placed on the dummy block DB. For example, the processing robot RB may be positioned above a predetermined height from the center of the dummy block DB by a crane or the like.

This also makes it possible to use a single processing robot (RB) that does not move to produce a complex shape mold or a plurality of molds.

However, in the processing step S300, a plurality of processing robots RB may be disposed around the processing stage S and at the same time, a dummy block DB may be processed to produce a complex shape mold or a plurality of templates.

As described above, in the method for manufacturing a mold according to the present invention, since the dummy block DB is disposed in the processing stage S and the dummy block DB is formed into a mold using the processing robot RB, The process can be simplified. Thus, it is possible to reduce the time and cost required for producing the mold. Further, since the mold is manufactured by the processing robot (RB), it is possible to improve the processing accuracy of the mold production.

Hereinafter, a method for manufacturing a propeller for a ship according to the present invention will be described with reference to FIG.

6 is a view showing an embodiment of a propeller manufacturing method according to the present invention.

As shown in FIG. 6, an embodiment of a propeller manufacturing method according to the present invention includes a mold making step S10, a mold assembling step S20, a molten metal injecting step S30, and a mold separating step S40 can do.

In the mold making step S10, the above-described mold making method, that is, a mold making method for manufacturing a mold by processing a dummy block DB by a processing robot RB, includes an upper mold M1 for forming a ship propeller, Thereby forming a mold M2.

The upper mold M1 and the lower mold M2 may be formed by one or more processing robots RB in one processing stage S and one or a plurality of processing units And may be made by a processing robot RB.

Since the mold making method has been described above, it will be omitted in the following.

As described above, in the method for manufacturing a ship propeller according to the present invention, since the dummy block (DB) is processed by a processing robot (RB) to produce a mold, the time and cost required for manufacturing a propeller for a ship can be reduced have.

In the mold assembly step S20, the upper mold M1 and the lower mold M2 fabricated in the mold making step S10 are assembled.

The method of assembling the upper mold M1 and the lower mold M2 is not particularly limited and may be any known method such as assembling by a coupling member (not shown) such as a bolt.

In the molten metal injecting step S30, molten metal MS is injected into the assembled upper mold M1 and the lower mold M2. When the upper mold M1 and the lower mold M2 are assembled, a space, that is, a cavity (not shown), in which the melt MS can be injected, is formed between the upper mold M1 and the lower mold M2. Then, the molten metal MS is injected into the cavity between the upper mold M1 and the lower mold M2.

Accordingly, the cavity between the upper mold M1 and the lower mold M2 can be filled with the molten metal MS to make the propeller casting CA for the ship.

In the casting separation step S40, the upper mold M1 and the lower casting M2 are separated from the ship propeller casting CA.

That is, when the marine propeller casting CA is formed by cooling the molten metal MS injected into the upper mold M1 and the lower mold M2 to a predetermined temperature, the assembly of the upper mold M1 and the lower mold M2 And separates the upper mold M1 and the lower mold M2 from the marine propeller casting CA.

Thereafter, the ship propeller casting (CA) may be subjected to post-treatment such as heat treatment, surface grinding, plating, painting or the like to produce a marine propeller.

INDUSTRIAL APPLICABILITY As described above, the method for manufacturing a mold according to the present invention and the method for manufacturing a propeller for a ship using the same can simplify the process of manufacturing the mold, reduce the time and cost required for manufacturing the mold, It is possible to increase the machining accuracy of the mold making and to save the time and cost spent in manufacturing the propeller for the marine vessel.

The above-described mold making method and the ship propeller manufacturing method using the same are not limited to the above-described embodiments, but the embodiments may be modified so that all or some of the embodiments are selectively As shown in FIG.

DB: Dummy block S: Processing stage
RB: Processing robot R: Rail
M1: Upper mold M2: Lower mold
CA: Castings HK: Hook Hook
SS: support stage LE: extension rod
PT: Processing tool MS: Molten metal

Claims

A dummy block disposing step of disposing a dummy block to be processed into a mold within a processing stage;
A robot alignment step of aligning the processing robot to a processing position; And
A machining step of machining the dummy block with the machining robot to form a mold;
&Lt; / RTI >

The method of claim 1, wherein the dummy block comprises Furan resin and silica sand.

The method according to claim 1, wherein the processing stage is a plate.

The method according to claim 1, wherein the processing robot moves around the processing stage in the processing step.

The method according to claim 4, wherein a rail on which the processing robot moves is provided around the processing stage.

The method according to claim 1, wherein the machining stage rotates in the machining step.

The method according to claim 1, wherein the processing robot is located above the dummy block.

8. A method for manufacturing a casting mold according to any one of claims 1 to 7, comprising the steps of: forming a top mold and a bottom mold for making a propeller for a ship;
A mold assembling step of assembling the upper mold and the lower mold;
A molten metal injection step of injecting molten metal into the assembled upper and lower molds to form a propeller casting for a ship; And
A mold separating step of separating the upper mold and the lower mold from the marine propeller casting;
Of the propeller shaft.