KR102019435B1 - Apparatus and method for finishing by continuous hair-line pattern on pipe material - Google Patents

Abstract

The present invention relates to a method and apparatus for processing a transverse hairline of a pipe-shaped material, and more particularly, to easily form a transverse hairline on a surface of a pipe-shaped material formed of a surface having various curvatures in cross-section. The present invention relates to a method and apparatus for transverse hairline processing of a pipe-shaped material which not only makes it possible to obtain a uniform and uniform hairline pattern, but also prevents excessive grinding to impair the shape of the cross section.
In the horizontal hairline processing method and apparatus for pipe-like material according to the present invention, a hair of a pipe-shaped material for forming a hairline on the surface of a pipe-shaped workpiece having a curved surface having a different curvature in cross section. A line processing apparatus, comprising: fixing means for fixing the workpiece in a state in which the plurality of workpieces are arranged in a circle adjacent to each other so that the curved surface of the workpiece is located at the circumference of the workpiece surface; And a polishing means for polishing the curved surfaces of the plurality of workpieces while being relatively moved along the circumference of the processing surface to form a hairline on the surfaces of the curved surfaces of the workpieces.

Description

FIELD AND METHOD FOR FINISHING BY CONTINUOUS HAIR-LINE PATTERN ON PIPE MATERIAL}

The present invention relates to a method and apparatus for processing a transverse hairline of a pipe-shaped material, and more particularly, to easily form a transverse hairline on a surface of a pipe-shaped material formed of a surface having various curvatures in cross-section. The present invention relates to a method and apparatus for transverse hairline processing of a pipe-shaped material which not only makes it possible to obtain a uniform and uniform hairline pattern, but also prevents excessive grinding to impair the shape of the cross section.

Metallic materials have a unique metallic luster, which not only has a beautiful appearance but also has excellent strength and durability compared to other materials, so the range of use is continuously expanded.

Usually, in order to have an inherent gloss of a metallic material, the surface of the metal may be polished and used, but a single metallic gloss has a disadvantage of giving a monotonous feeling. In particular, in products that emphasize the external design such as mobile communication terminals and home appliances, surface treatment methods for metal materials are being developed to meet the various needs of consumers while finishing the exterior with metal materials.

As one of these methods, metal products have been developed and used to form a fine hairline on the surface to exert a decorative effect. Such hairline processing is to form a fine line in a straight line by rubbing sandpaper or steel brush on the surface of the smoothly polished metal material, and can produce decorative beauty out of the dull metallic luster. There is this.

However, such hairline processing is performed in such a way that the worker rubs the metal material manually by rotating sandpaper or brush. Therefore, hairline processing takes a lot of work time and not only lowers the productivity, but also the spacing and length of the hairline formed as a result of the process depends on the skill and function of the operator. have.

In order to solve this problem, Korean Patent Publication No. 10-2010-0070033 (Method for forming a hairline pattern on the part), Korean Patent No. 10-0412260 (Hairline processing machine of metal plate), Korean Patent Publication No. 10 -2008-0098155 (Metallic sheet material with continuous hairline processing on curved surface and plane, continuous hairline processing apparatus and method of metal sheet material including curved surface and flat surface) using machine to form hairline on the surface of metal material By doing so, a technique for obtaining an economical and uniform product is disclosed.

On the other hand, in order to open and close the doors of home appliances such as refrigerators, washing machines, microwave ovens, and other products such as door handles that are handles recently, aluminum, which is a metal material, is often used. Hairline is often formed.

Products such as door handles for home appliances have a long pipe shape, which is designed to have a wide variety of shapes in order to meet various consumer demands for recent designs. Therefore, there are many limitations in automation of surface treatment such as hairline formation. Currently, most of the work is done by hand.

As described above, since the work of the hairline by hand makes it difficult to secure an economical and uniform quality, the Republic of Korea Patent No. 10-1341670 (surface polishing device of the door handle for refrigerator) is a refrigerator door handle which is a pipe-shaped material Surface grinding and hairline scratch formation are made easier and faster while automatically transferring.

However, the technique disclosed in Korean Patent No. 10-1341670 (surface polishing device of the door handle for a refrigerator) is provided in a pipe-shaped door handle because the hairline is formed in the longitudinal direction of the door handle while the door handle is transferred in the longitudinal direction. There is a limitation that the hairline can be formed only in the longitudinal direction.

Therefore, the work of forming the hairline in the transverse direction on the pipe-shaped material still depends on the manual work.

In particular, if the pipe-shaped material is formed with flat and curved sections or various curved surfaces with different curvatures, the hairline processing for each flat part or curved part should be performed by applying different processing methods or conditions. If the deformation occurs in the cross-sectional shape of the corner part due to excessive grinding of the corner part formed to protrude when the plane meets the surface or the surface meets the surface, the hairline is formed to prevent excessive grinding on the corner part. Very skilled work is required because the polishing work must be performed.

Republic of Korea Patent Publication No. 10-2010-0070033: Method of forming a hairline pattern on the part Republic of Korea Patent No. 10-0412260: Hairline processing machine for metal plate Korean Patent Laid-Open Publication No. 10-2008-0098155: Metal plate material having a continuous hairline processing on a curved surface and a plane, and an apparatus and method for continuous hairline processing of a metal sheet including a curved surface and a plane Republic of Korea Patent No. 10-1341670: Surface polishing device of the door handle for the refrigerator

The present invention was conceived by recognizing the above point is an object of the present invention to easily form a horizontal hairline on the surface of the pipe-shaped material formed by the surface of the curvature of the cross-section shape and uniform hairline It is to provide a method and apparatus for transverse hairline processing of a pipe-shaped material that not only makes it possible to obtain a pattern, but also prevents excessive grinding to impair the shape of the cross section.

In order to achieve the above object, a horizontal hairline processing method and apparatus for processing a pipe-shaped material according to the present invention comprises a hairline on the surface of a pipe-shaped workpiece having a cross-section in which a curvature with a different curvature is seen in cross section. A hairline processing apparatus of a pipe-shaped material for forming, the fixing means for fixing the workpiece in a state in which the plurality of workpieces are arranged in a circle adjacent to each other so that the curved surface of the workpiece lies on the circumference of the workpiece surface. And polishing means for polishing the curved surfaces of the plurality of workpieces while being relatively moved along the circumference of the workpiece surface to form a hairline on the surfaces of the curved surfaces of the workpieces fixed to the fixing means. It is characterized by.

In addition, the hairline processing apparatus of the pipe-shaped material according to the present invention, the fixing means, the base portion, and the plurality of workpieces are arranged in a circular shape on one side of the base portion such that the ends of each workpiece to be bonded It is characterized in that a plurality of fasteners arranged in a circular configuration.

In addition, the hairline processing apparatus of the pipe-shaped material according to the present invention, the fixing means is rotated, characterized in that the relative movement of the processing surface and the polishing means of the fixing means.

In addition, the hairline processing apparatus of the pipe-shaped material according to the present invention is characterized in that the grinding means makes a relative movement between the machining surface of the fixing means and the polishing means while revolving around the machining surface of the fixing means.

Moreover, the hairline processing apparatus of the pipe-like raw material which concerns on this invention is a hairline processing of the pipe-shaped material for forming a hairline on the surface of the pipe-shaped workpiece | work material which has the cross section which the curved surface from which a curvature differs in cross section is connected. In the method, the material arrangement step of arranging the plurality of the workpiece to be adjacent to the circle so that the curved surface of the workpiece is on the circumference of the machining surface, and the plurality of workpieces in the state that the workpiece is arranged in a circle Polishing means for polishing the curved surface of the material is characterized in that it comprises a curved hairline forming step of forming a hairline on the surface of the curved surface of the plurality of workpieces while moving relatively along the circumference of the processing surface.

In addition, the hairline processing method of the pipe-shaped material according to the invention, characterized in that it further comprises a boundary hairline forming step of forming a hairline on the interface between the curved surface and the curved surface having different curvature.

The horizontal hairline processing method and apparatus of the pipe-shaped material according to the present invention by the configuration as described above to easily form the hairline in the transverse direction on the surface of the pipe-shaped material formed of the surface of the curvature of the cross section In addition to providing a uniform and uniform hairline pattern, there is an advantage that excessive grinding is prevented so as not to damage the shape of the cross section.

1 is a cross-sectional view and a perspective view showing an example of a pipe-shaped material to be hairlined by a transverse hairline processing method and apparatus of a pipe-shaped material according to an embodiment of the present invention
Figure 2 is a perspective view conceptually showing a transverse hairline processing apparatus of a pipe-shaped material according to an embodiment of the present invention
3 is a side view illustrating a state in which hairline processing is performed on a first curved surface of a pipe-shaped material by a transverse hairline processing apparatus of a pipe-shaped material according to an embodiment of the present invention.
4 is a side view illustrating a state in which hairline processing is performed on the second curved surface of the pipe-shaped material by the transverse hairline processing apparatus of the pipe-shaped material according to an embodiment of the present invention.
FIG. 5 is a perspective view illustrating a state in which hairline processing is performed on an interface of a pipe-shaped material by a transverse hairline processing apparatus for a pipe-shaped material according to an embodiment of the present invention. FIG.
Figure 6 is a flow chart showing the flow of the horizontal hairline processing method of the pipe-shaped material according to an embodiment of the present invention

Hereinafter, a method and apparatus for processing a transverse hairline of a pipe-shaped material according to the present invention will be described in more detail with reference to the embodiment shown in the drawings.

1 is a cross-sectional view and a perspective view showing an example of a pipe-shaped material to be hairlined by the transverse hairline processing method and apparatus of a pipe-shaped material according to an embodiment of the present invention, Figure 2 is an embodiment of the present invention 3 is a perspective view conceptually illustrating a transverse hairline processing apparatus of a pipe-shaped material according to an example, and FIG. 3 is a first view of the pipe-shaped material by the transverse hairline processing apparatus of a pipe-shaped material according to an embodiment of the present invention; 4 is a side view illustrating a state in which hairline processing is performed on a curved surface of FIG. 4, and FIG. 4 is a hairline processing on a second curved surface of a pipe-shaped material by a transverse hairline processing apparatus of a pipe-shaped material according to an embodiment of the present invention. This is a side view showing a state made, Figure 5 is a horizontal hairline processing apparatus of a pipe-shaped material according to an embodiment of the present invention FIG. 6 is a perspective view illustrating a state in which hairline processing is performed on an interface of a pipe-like material, and FIG. 6 is a flowchart illustrating a flow of a horizontal hairline processing method of a pipe-shaped material according to an embodiment of the present invention.

The present invention provides a hairline of a pipe-like material for forming a hairline (p) on the surface of a pipe-shaped workpiece (M) having a cross-section in which several curved surfaces (f1, f2, f3) having different curvatures are viewed in cross section. It relates to a processing apparatus 1 and a method. In the present invention, a curved surface having a different curvature is a concept including a plane (zero curvature), and the present invention provides a surface of a workpiece (M), which is a pipe-shaped material having a cross-sectional shape continuously or discontinuously. It is characterized by forming a hairline p in the transverse direction which is a direction perpendicular to the longitudinal direction.

FIG. 1 shows an example of a pipe-shaped workpiece M to be processed by the hairline p according to the present invention, and the workpiece M shown in FIG. 1 has a relatively small curvature (curvature radius). A second curved surface f2 having a larger curvature (smaller radius of curvature) than the first curved surface f1, which is located opposite to the first curved surface f1 and the first curved surface f1. The boundary surface f3 located at the side between the first curved surface f1 and the second curved surface f2 has a cross-sectional shape which is curved. Herein, the curved surface of the first curved surface f1 has a larger radius of curvature than the second curved surface f2.

In order to form the hairline p in the longitudinal direction perpendicular to the longitudinal direction of the pipe on the surface of the long pipe-shaped workpiece (M) having the cross-sectional shape as described above, The hairline p is formed on the curved surface of the workpiece M by means of grinding means 20 such as sandpaper or a polishing brush, which move relatively around the workpiece M in a circular arrangement. It has a structure.

Referring to the drawings, the horizontal hairline processing apparatus 1 of the pipe-shaped material according to an embodiment of the present invention comprises a fixing means 10 and the polishing means 20.

The fixing means 10 is a configuration for fixing the workpiece (M) to be arranged in a circle along the processing surface (C1, C2). Referring to the drawings, the fixing means 10 is provided with a base portion 11 formed in a circular shape, and a plurality of fasteners 12 arranged in a circular shape on one side of the base portion 11. Each end of the fixture 12 is inserted and supported by the end of the workpiece (M). As described above, the end of each of the workpieces M is inserted and supported by the fixture 12 so that a plurality of workpieces M are arranged in a circle on one side of the base portion 11. The fraud fixing means 10 may be configured such that the base portion 11 and the fastener 12 are provided at both sides of the workpiece M so that both ends of the workpiece M are supported.

The workpiece M to be arranged and fixed in a circular shape on the fixing means 10 has a hairline p formed on a curved surface exposed to the outside by the polishing means 20 relatively moved around. Rotation (rotation, R1) of the fixing means 10 itself may be made for the relative movement of the polishing means 20 and the workpiece (M) in the circumferential direction.

The grinding means 20 is a workpiece material arranged in a circular shape to form a hairline (p) on the surface of the curved surface (f1, f2) of the plurality of workpiece (M) fixed to the fixing means (10) The curved surfaces f1 and f2 of the plurality of workpieces M are polished while being relatively moved along the circumference of M). The grinding means 20 may be configured by sandpaper or abrasive brush, the embodiment shown by the brush in the form of a roll is shown.

The polishing brush wheel of the polishing means 20 polishes the surface of the workpiece M by its rotation Rp, and reciprocates or moves in one direction in the longitudinal direction L of the workpiece M. do. In addition, the polishing means 20 may be configured to revolve around the workpiece M to be idle (R2) for the relative movement of the polishing means 20 and the workpiece (M) in the circumferential direction. have.

Hereinafter, the hairline processing apparatus of the pipe-shaped material according to an embodiment of the present invention configured as described above by explaining in detail the process of forming the hairline (p) on the surface of the workpiece (M) shown in FIG. The operation of (1) will be described in more detail.

2 and 3 are views showing a state in which a hairline is formed on the first curved surface f1 having a small curvature of the workpiece M. FIG.

2 and 3, the plurality of workpieces M are arranged in a circle such that the first curved surface f1 faces outward and is adjacent to each other. At this time, the first curved surface f1 is placed on the first processing surface C1 which is an imaginary surface on which the polishing means 20 is processed. The first machining surface C1 is selected in consideration of the curvature of the first curved surface f1, and the first machining surface C1 has the same curved surface as the first curved surface f1, or It is preferable to select so that it may become substantially the same state. That is, the first machining surface C1 is selected to have a radius of curvature Cr1 calculated to have a curvature equal to or very close to that of the first curved surface f1.

As described above, the polishing brush wheel of the polishing means 20 is rotated Rp while the first curved surface f1 is arranged to lie on the first machining surface C1, and thus the first machining surface f1 is rotated Rp. Hairline (p) is formed on the surface of the).

At this time, the polishing means 20 is relatively moved along the circumference of the first machining surface C1 by the rotation R1 of the fixing means 10 or the revolution R2 of the polishing means 20. Will be.

FIG. 4 is a view showing a state in which a hairline is formed on the second curved surface f2 having a large curvature of the workpiece M. FIG.

Referring to FIG. 4, the plurality of workpieces M are arranged in a circle such that the second curved surface f2 faces outward and is adjacent to each other. At this time, the second curved surface f2 is placed on the second processing surface C2 which is an imaginary surface on which the processing means 20 is processed. Similar to the first machining surface C1, the second machining surface C2 is selected in consideration of the curvature of the second curved surface f2. That is, the second machining surface C2 is selected to have a radius of curvature Cr2 calculated to have a curvature equal to or very close to that of the second curved surface f2.

As described above, the polishing brush wheel of the polishing means 20 is rotated Rp while the second curved surface f2 is arranged to lie on the second processing surface C2, and thus the second processing surface f2 is formed. Hairline (p) is formed on the surface of the).

At this time, the polishing means 20 is relatively moved along the circumference of the second machining surface C2 by the rotation R1 of the fixing means 10 or the revolution R2 of the polishing means 20. Will be.

FIG. 5 illustrates a process of forming a hairline on the boundary surface f3 between the first curved surface f1 and the second curved surface f2 having different curvatures of the workpiece M. FIG.

The boundary surface f3 refers to a surface located at a boundary between neighboring curved surfaces, such as an edge surface. When the boundary surface f3 is very large in curvature, the boundary surface f3 is arranged to be circular for the processing of the boundary surface f3. The radius of curvature of the surface is formed so small that the workpiece (M) refers to the surface that is difficult to arrange in a suitable number, such as interference with each other.

Referring to FIG. 5, for the processing of the boundary surface f3, one polishing target 20 is made by the polishing means 20.

6 is a flow chart showing the flow of the horizontal hairline processing method of the pipe-shaped material according to an embodiment of the present invention.

Referring to FIG. 6, in the lateral hairline processing method of a pipe-shaped material according to an embodiment of the present invention, a workpiece having a pipe shape having a cross-section in which curved surfaces f1, f2, and f3 having different curvatures are viewed in cross-section. To form a hairline on the surface of (M), it comprises a material arrangement step (S10), curved hairline forming step (S20) and boundary surface hairline forming step (S30).

The material arranging step (S10) is a step of arranging the plurality of workpieces M in a circle adjacent to each other such that the curved surfaces f1 and f2 of the workpiece M are placed on the circumference of the workpieces C1 and C2. .

The curved hairline forming step S20 may include grinding means 20 for polishing curved surfaces f1 and f2 of the plurality of workpieces M in a state in which the workpieces M are arranged in a circular shape. It is a step of forming a hairline on the surface of the curved surface of the plurality of workpieces (M) while moving relatively along the circumference of the machining surface (C1, C2). The curved hairline forming step S20 may be repeatedly performed aberration according to the number of curved surfaces f1 and f2. 3 and 4 illustrate a state in which a hairline is formed on curved surfaces f1 and f2 in the curved hairline forming step.

The interface hairline forming step S30 may form a hairline on an interface f3 between the first curved surface f1 and the second curved surface f2 having different curvatures with respect to each of the workpieces M. It's a step. 5 illustrates a state in which a hairline is formed on the interface f3 in the interface hairline forming step.

The transverse hairline processing method and apparatus of the drawings and the pipe-like material described above are just one embodiment for carrying out the present invention, and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the claims below, and the embodiments which have been improved and changed without departing from the gist of the present invention will be apparent to those skilled in the art. It will be said to belong to the protection scope of the present invention.

M workpiece material
f1, f2 first and second curved surfaces
f3 boundary
C1, C2 First and second machining surface
10 Fastening means
11 base parts
12 Fixture
20 Grinding means (polishing brush wheel)

Claims (6)

In the hairline processing apparatus of a pipe-shaped material for forming a hairline on the surface of the pipe-shaped workpiece | work material which has the cross section which the curvature from which curvature differs by the cross section is connected,
Fastening means for fixing the workpiece in a state in which the plurality of workpieces are arranged in a circle adjacent to each other so that the curved surface of the workpiece faces in the outward direction and fixed to the fixing means; Polishing means for polishing the curved surfaces of the plurality of workpieces while being relatively moved along the circumference of the processing surface to form a hairline on the surface of the curved surface of the plurality of workpieces,
The material to be processed is a hairline processing apparatus of a pipe-like material, characterized in that each of the curved surface of the different curvature is fixed by the fixing means so as to lie on the circumference of the different processing surface in a state facing outward. The method of claim 1,
The fixing means, the base portion,
And a plurality of fasteners arranged in a circular shape on one side of the base part such that the plurality of work materials are arranged in a circle and the ends of each work material are coupled to each other. The method according to claim 1 or 2,
The fixing means is a hairline processing device of a pipe-shaped material, characterized in that the relative movement of the processing surface of the fixing means and the polishing means while rotating. The method according to claim 1 or 2,
And said grinding means makes a relative movement between the processing surface of said holding means and said grinding means while revolving around the processing surface of said holding means. In the hairline processing method of the pipe-shaped material for forming a hairline on the surface of the pipe-shaped workpiece | work material which has the cross section which the curvature from which a curvature differs by the cross section is connected,
A material arranging step of arranging the plurality of workpieces in a circle adjacent to each other so as to be placed on the circumference of the workpiece surface with the curved surface of the workpiece facing outward; And a curved hairline forming step of forming a hairline on the surfaces of the curved surfaces of the plurality of workpieces while the polishing means for polishing the curved surface of the workpiece is relatively moved along the circumference of the workpiece surface.
In the material arranging step and the curved hairline forming step, each of the curved surfaces of different curvatures of the workpiece is placed on the circumference of different processing surfaces in an outward direction and polished to different curved surfaces. The hairline processing method of the pipe-shaped material characterized by the above-mentioned. The method of claim 5,
The hairline processing method of a pipe-shaped material, characterized in that it further comprises the step of forming a hairline on the interface between the curved surface and the curved surface having a different curvature.

Images