WO2017222154A2

WO2017222154A2 - Method for manufacturing metal eyeglass frame and metal eyeglass frame manufactured by same manufacturing method

Info

Publication number: WO2017222154A2
Application number: PCT/KR2017/003709
Authority: WO
Inventors: 배윤수
Original assignee: 배윤수
Priority date: 2016-06-20
Filing date: 2017-04-05
Publication date: 2017-12-28
Also published as: WO2017222154A3

Abstract

A method for manufacturing a metal eyeglass frame according to the present invention comprises: a front portion material extrusion step for continuously extruding, by an extruder, a metal material prepared for manufacturing a front portion of a metal eyeglass frame, to manufacture a front portion material; and a cutting step for cutting the front portion material into a shape of an eyeglass frame front to form a front portion preform, wherein when the front portion material is continuously extruded by the extruder, the extruded cross section of the front portion material has a curve corresponding to a curve extending along one side rim portion-bridge portion-the other side rim portion of the front portion preform in view from the above or below of the front portion preform.

Description

Metal eyeglass frame manufacturing method and metal eyeglass frame manufactured by the method

The present invention relates to a metal spectacle frame manufacturing method, a metal spectacle frame manufactured by the manufacturing method, and a cutting jig for producing a metal spectacle frame. The present invention is a metal spectacle frame manufacturing method and a metal produced by the manufacturing method The present invention relates to an eyeglass frame and a cutting jig for manufacturing a metal eyeglass frame.

1 is a perspective view of a metal eyeglass frame according to the prior art. Referring to Figure 1, the metal frame 10 according to the prior art includes a temple (15, or legs) hinged at both the front and front of the front of the glasses.

The front is a frame surrounding the lens rim and includes a pair of rims 12 and a bridge 11 connecting between the pair of rims 12. Temple 15 is a part connected from the front to the ear, the tip of the temple 15 is integrally coupled to the tip of the allergic material in contact with the ear.

The hinge portion 13 is connected to the temple 15 at both ends of the front, and the hinge 14 is coupled to the hinge portion 13 so that the temple 15 can be folded toward the front side. The rim lock 12 ′ fixing the lens to the rim 12 and / or the hinge portion 13 is coupled, and a nose pad 17 is provided on the bridge 11.

As described above, the metal eyeglass frame 10 has various parts for each position, and these are usually mainly screwed or welded.

On the other hand, the conventional metal spectacle frame 10 is heavy due to the characteristics of the material, there was a problem that discoloration or plating peeled off during use, metal allergy was generated by direct contact with the skin.

Recently, light metal alloys such as magnesium, titanium, aluminum, etc. or light metal alloys based on light metals such as duradulmin are used as eyeglass frames, and these light metals or light metal alloys are excellent in strength, light, and discolored or allergic to metal. As it is not generated, it is widely used as a material for eyeglass frames. In particular, magnesium has a number of advantages over other metal materials, but has not been popularized due to manufacturing difficulties.

Such a description of a spectacle frame or a manufacturing method using a light metal or light metal alloy is disclosed in the Republic of Korea Patent Application No. 20-1998-0000962 (prior art 1) and the Republic of Korea Patent Application No. 20-2003-0011966 (prior art 2) And the like.

Prior arts 1 and 2 apply a die casting method to manufacture a metal frame. When the die casting method is applied, although it is necessary to have a complicated facility, it is not easy to manufacture, and the surface is uneven, so that further processing is required. In particular, there is a problem that the die casting method is susceptible to corrosion.

Accordingly, Korean Patent Application No. 10-2003-0078557 (prior art 3) and Korean Patent Office application number 10-2007-0112468 (prior art 4) disclose a method of manufacturing eyeglass frames by another method deviating from the above method. Although disclosed, it is not efficient and ineffective.

Currently, the general manufacturing method is to cut the flat plate and make it fit to the face using several pressing and punching operations. In this case, the hinge part or the part to be inserted into the hinge part must be separately manufactured and then joined by welding. There is a problem that the process is necessary. In addition, in order to integrate the hinge portion with the rim, a portion that is bent about 90 degrees from the rim is constituted, and the bending process inevitably stresses the metal frame, and especially in the case of magnesium, the stress becomes more excessive. There is a problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide a metal spectacle frame manufacturing method capable of producing a hinge-integrated metal spectacle frame which can be efficiently and simplifies a post process, and a metal spectacle frame manufactured by the method.

Another object of the present invention is to provide a metal spectacle frame manufacturing method capable of manufacturing a metal spectacle frame without applying stress to the bent portion between the rim and the hinge portion, and a metal spectacle frame manufactured by the manufacturing method.

Method for manufacturing a metal eyeglass frame according to an aspect of the present invention, the front material extrusion step of producing a front material by the extrusion of the metal material prepared for the front part of the metal frame produced by the extrusion machine; And a cutting step of cutting the front part material into the shape of the front of the spectacle frame to form a front part circular shape, wherein the extruded end surface of the front part material is continuously or extruded from the front part circular shape when the extruder is continuously extruded. When looking at the front part round shape is characterized in that the front part has a curve corresponding to the curve leading from one rim portion-the bridge portion-the other rim portion.

Method for manufacturing a metal eyeglass frame according to an aspect of the present invention, the front material extrusion step of producing a front material by the extrusion of the metal material prepared for the front part of the metal frame produced by the extrusion machine; And a cutting step of cutting the front part material into the shape of the front of the spectacle frame to form a front part round shape. When the extrusion part is continuously extruded from the extruder, the extruded end surface of the front part material is formed on one side of the rim part of the front part part. And a thickness corresponding to the thickness, the thickness of the bridge portion, and the thickness of the other rim portion, respectively.

Method for manufacturing a metal eyeglass frame according to an aspect of the present invention, the front material extrusion step of producing a front material by the extrusion of the metal material prepared for the front part of the metal frame produced by the extrusion machine; Cutting the front part material to form a front part of the spectacle frame to form a front part circular shape; wherein the continuously extruded front part material has a plate shape with both sides bent, and a horizontal cross section of the front part material is rounded. It has a curvature according to the shape of the face.

In the above-described method of manufacturing a metal eyeglass frame, the extruded end face is protruded from both sides so as to be bent so that the integral hinge portion of the front portion is protruded from both sides of the rim.

In the method of manufacturing the metal eyeglass frame, a hinge pin hole is formed in the integral hinge part to be assembled and rotated, but a through hole corresponding to the hinge pin hole is formed when the front part material is extruded.

In the method of manufacturing a metal eyeglass frame, the front part material is characterized by using magnesium or magnesium alloy as a material.

In the method of manufacturing the metal eyeglass frame, the front part material is characterized in that the anti-drilling dummy protrusion is formed at a corresponding position of the rim so as to be bitten by the biting groove of the cutting jig for preventing the shaking during the cutting process. .

In the metal spectacle frame manufacturing method, the cutting jig, the fixing jig for fixing position; A pair of movable jig parts disposed on both sides of the fixing jig part while allowing the biting groove part to be formed between the fixing jig part and approaching or spaced apart from the fixing jig part; And a jig driving part provided in the fixing jig part and the pair of movable jig parts and driving the pair of movable jig parts.

In the metal spectacle frame manufacturing method, the front part manufacturing step after the finishing process for manufacturing the front part by performing at least one or more of polishing, decoration and painting the front part circular; And a leg assembly step of manufacturing a metal frame by assembling the leg part and the front part made by a hinge in a separate process.

According to an aspect of the present invention, it is possible to manufacture a hinge-integrated metal eyeglass frame that can be efficient and simplify the post-process, and can produce a metal eyeglass frame without stressing the bending portion between the rim and the hinge portion. have.

In addition, according to an aspect of the present invention, since the hinge-integrated metal eyeglass frame can be manufactured without problems such as shaking during cutting, it is possible to improve the production yield of high-quality metal eyeglass frames.

In addition, according to an aspect of the present invention, it is possible to mass-produce a hinge-integrated metal eyeglass frame that was not possible with the conventional method, as well as to easily produce glasses of various shapes with one extruded material.

In addition, according to an aspect of the present invention, there is an effect that can be efficiently produced a hinge-integrated metal eyeglass frame made of magnesium, which was difficult to process.

In addition, according to one aspect of the present invention, there is an advantage that the existing press molding step is unnecessary.

1 is a perspective view of a metal eyeglass frame according to the prior art.

2 is a perspective view of a metal eyeglass frame manufactured by a method for manufacturing a metal eyeglass frame according to an embodiment of the present invention.

3 is a perspective view of the metal frame of FIG. 2 before assembly.

Figure 4 (A) is a view showing an extruder used in the metal eyeglass frame manufacturing method according to an embodiment of the present invention, Figure 4 (B) is a view showing a process in which the front material is extruded by the extruder. .

Figure 5 is a view showing a front portion material and the front portion cut from it.

FIG. 6 is an enlarged view of the main part of FIG. 5 and shows a state of removing the anti-shake dummy protrusion during cutting; FIG.

7A is a structural diagram of a jig for cutting.

FIG. 7B is a view of a product placed on FIG. 7A. FIG.

8 is a flow chart of a metal spectacle frame manufacturing method according to an embodiment of the present invention.

9 is a modified embodiment of the jig for cutting.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms.

In this specification, this embodiment is provided to make the disclosure of the present invention complete, and to fully convey the scope of the invention to those skilled in the art. And the present invention is only defined by the scope of the claims. Thus, in some embodiments, well known components, well known operations and well known techniques are not described in detail in order to avoid obscuring the present invention.

Like reference numerals refer to like elements throughout. And the terminology (discussed) used herein is for the purpose of describing the embodiments are not intended to limit the invention. In the present specification, the singular also includes the plural unless specifically stated in the phrase. Also, components and acts (acts) referred to as 'includes (or includes)' do not exclude the presence or addition of one or more other components and acts.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art. Also, the terms defined in the commonly used dictionaries are not ideally or excessively interpreted unless they are defined.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

2 is a perspective view of a metal eyeglass frame manufactured by a method for manufacturing a metal eyeglass frame according to an embodiment of the present invention, FIG. 3 is a perspective view before the metal eyeglass frame of FIG. 2 is assembled, and FIG. 4A illustrates one embodiment of the present invention. 4 is a view illustrating an extruder used in a method for manufacturing a metal frame according to an embodiment, and FIG. 4B is a view illustrating a process of extruding the front part material by the extruder, and FIG. 5 is a front part material and a front part circular shape thereof. Figure 6 is a view showing a state to cut, Figure 6 is an enlarged view of the main portion of Figure 5 is a view of removing the anti-vibration dummy projection during cutting, Figure 7a is a structural view of the jig for cutting, Figure 7b is a product placed in Figure 7a 8 is a flow chart of a method for manufacturing a metal eyeglass frame according to an embodiment of the present invention.

Referring to these drawings, the method of manufacturing the metal eyeglass frame according to the present embodiment can manufacture the hinge part-integrated metal eyeglass frame in an efficient manner and can also manufacture the hinge part-integrated metal eyeglass frame without problems such as shaking during cutting. Therefore, it is possible to improve the production yield of high-quality metal glasses frames, and to simplify the post-process. To this end, the metal spectacle frame manufacturing method according to the present embodiment is a material preparation step (S11), the front material extrusion step (S12), the cutting processing step (S13), after finishing the front part manufacturing step (S14), and the leg portion Assembly step (S15) may be included.

First, the material preparation step (S11) is a process of preparing a material of the metal forming the front portion 100 of the metal eyeglass frame for the manufacture of the metal eyeglass frame.

For reference, the material constituting the front portion 100 of the metal spectacle frame being applied to the present embodiment may be a light metal or a light metal alloy that is widely used in recent years. Looking more specifically, it may be a magnesium material that was difficult to process.

After the metal material is prepared, the metal design of the shape as shown in FIG. 2 may be designed, and then the cross-sectional shape may be determined for extrusion. At this time, the design may use a computer program such as CAD. Of course, this is optional and does not have to apply.

For reference, with reference to Figures 2 and 3 looks at the metal spectacle frame that can be manufactured by the manufacturing method of the present embodiment.

The metal eyeglass frame may be composed of the front part 100 and the leg part 200. After the front part 100 and the leg part 200 are manufactured separately, they may be assembled to each other.

The front portion 100 includes a pair of rims 120 into which the lens is fitted, a bridge 110 connecting the pair of rims 120 between the pair of rims 120, and ends of the rims 120. Each bend may include a pair of one-piece hinge 130 to be coupled to the leg 200 and the hinge.

A hinge pin hole 131 may be formed in the integral hinge part 130 so that the leg part 200 may be assembled and rotated. At this time, a hinge pin hole 131 is formed in the integral hinge portion 130 so that the leg portion 200 can be assembled and rotated, and penetrates corresponding to the hinge pin hole 131 during extrusion of the front portion material 300 to be described later. Balls (not shown) may be formed.

On the other hand, in the case of the present embodiment, since the integral hinge portion 130 is manufactured integrally at the time of manufacturing the front portion 100, it is completely different from the conventional structure. In addition, the leg 200 may be configured as a temple in a spectacles structure, or a structure in which a temple and a tip are combined. Since the manufacturing of the leg portion 200 also proceeds in the same manner as the front portion 100, the following will focus on the structure of the front portion 100 and the manufacturing method of the front portion 100.

Next, the front material extrusion step (S12) is a continuous extrusion of the prepared material using the front mold 510 of the extruder 500 shown in Figure 4 to produce a front material 300 as the primary material In the process of cutting, the anti-shake pile protrusion 315 (see FIG. 5) may be formed in one pair or one pair up and down per rim portion 312.

As shown in FIG. 4, when the front mold 510 is applied to the extruder 500 and the material is pushed into the extruder 500, the front material 300 is extruded through the extruder 500. , Extruded cross section of the front portion material 300 corresponds to the cross section of the front portion circular 310 to be described later.

The cross section of the front part material 300 is a cross section corresponding to the bridge portion 311 in the front portion circle 310, a cross section corresponding to both rim portions 312, and an integral hinge projecting from the end of the rim portion 312. A cross section corresponding to the branch portion 313 is integrally formed, and a cross section of the front portion material 300 may be continuously extruded into a cross section corresponding to the cross section of the front portion circle 310.

Extruded cross section of the front portion material 300 reflects the shape of the spectacle frame when the spectacle frame is viewed from the upper or lower portion of the spectacle frame (hereinafter referred to as the upper side and the lower side is referred to as the lower side). Extruded cross section of the front part material 300 is the one-piece integral hinge part 313-one rim part in the front part circle 310 when the front part circle 310 is viewed from above or below the front part circle 310. 312) a bridge portion 311-the other rim portion 312-a curve corresponding to the curve leading to the other integral hinge portion portion 313.

And the extrusion cross section of the front portion material 300 when continuously extruded in the extruder 500, the thickness of one rim portion 312, the thickness of the bridge portion 311 and the other rim portion 312 in the front portion round shape 310 Each having a thickness corresponding to the thickness of The thickness of the front portion material 300 may take into account the thickness change due to subsequent cutting, polishing or painting.

The front part material 300 continuously extruded has a plate shape with both sides bent, and the transverse cross section of the front part material 300 has a curvature according to a round face shape.

In the front part material 300, the part to be the bridge part 311 and the part to be the rim part 312 of the front part circular part 310 is formed three-dimensionally (in the form of an arc) according to the shape of a round face, and is integral The portion to be the hinge portion 313 is protruded from both sides of the portion to be each rim portion 312, like a normal metal eyeglass frame.

The extrusion section of the front part material 300 is formed to protrude from both sides so that the integral hinge part 313 of the front part circle 310 protrudes from both sides of the rim part 312 and is bent. And the through-hole (not shown) corresponding to the hinge pin hole 131 at the time of extrusion of the front portion material 300 may be formed in advance, so that the hinge pin hole 131 through a screw process in a subsequent process.

On the other hand, the rim portion 312 of the front portion circular 310 may be formed of the anti-vibration dummy protrusion 315 (see Fig. 5) during the cutting process, corresponding to the front portion material 300 by using an extruder 500 When the extrusion is extruded corresponding to the anti-vibration dummy projections 315 (see FIG. 5), two straight anti-vibration dummy projections are formed in the longitudinal direction of the continuous extrusion.

The front part material 300 is formed with a vibration preventing dummy protrusion at a corresponding position of the rim so as to be bitten by the biting groove 610 of the cutting jig 600 (see FIG. 7) to prevent shaking during cutting.

The vibration preventing dummy protrusion 315 during cutting is a protrusion for preventing shaking during cutting. The anti-vibration dummy protrusion 315 may be most preferable to be in close contact with the cutting jig 600 in the form of a triangle as shown in the figure.

However, the vibration preventing dummy protrusion 315 during cutting may have a rectangular, circular, or polygonal shape. Therefore, the scope of the present invention is not limited to the shape of the drawings.

The anti-vibration dummy protrusion 315 is a part for holding the reference during the cutting step (S13) to close the material to the cutting jig 600 to prevent shaking. Of course, after all the cutting process is completed, it can be removed later, the vibration preventing phenomenon during the cutting process can be eliminated due to such a vibration preventing dummy protrusion 315 can significantly reduce the manufacturing cost of the jig 600 for cutting. .

At this time, the anti-vibration dummy protrusion 315 forms a triangular shape when viewed from the side, the length of the long side and the opposite short side may be 10mm ~ 15mm and 2mm ~ 5mm, respectively. If the length of the long side and the short side is shorter than 10mm and 2mm or longer than 15mm and 5mm, the cutting jig 600 will not be bitten well. Even if bited, the shaking may be severe and thus may be difficult to precisely process. Therefore, the anti-drilling dummy protrusion 315 may have a length of 10 mm to 15 mm and 2 mm to 5 mm, respectively.

Of course, the scope of the present invention can not be limited to the numerical value thereof, but in the case of the anti-vibration dummy protrusion 315 during cutting, the narrower the part attached to the rim, the wider the opposite side, the more the material is bitten by the cutting jig 600. Adhesion between the cutting jig 600 and the cutting may be increased, and thus the shaking phenomenon may be eliminated during cutting.

Next, the cutting step (S13) is the front portion of the cutting material jig (600) in the state of cutting the front surface material 300 in the cutting processing of the front surface material 300, the pile projection 315 for preventing vibration 300 to the front of the eyeglass frame in which the bridge portion 311 in the middle, the rim portion 312 on both sides of the bridge portion 311 and the integral hinge portion portion 313 protruding bent from the ends of the rim portions 312 are integrated. Cutting is the process of forming the front portion 310.

When performing the cutting step (S13) may be used CNC machining, laser processing, or punching processing, through which can be made to the front portion 310.

Meanwhile, the cutting jig 600 described above may be used when the cutting step S13 is performed.

The cutting jig 600 may include a fixing jig part 620, a pair of movable jig parts 630, and a jig driver 640, as shown in FIGS. 7A and 7B. .

Fixing jig portion 620 is a jig that is fixed in the center to form the largest area.

The pair of movable jig parts 630 are fixed while the front jig of the front part circle 310 is formed with a bite groove part 610 bited by the vibration preventing dummy protrusion 315 between the fixing jig parts 620. Arrangements are provided on both sides of the dragon jig portion 620, respectively. The pair of movable jig parts 630 may be approached or spaced apart from the fixing jig part 620.

And the jig driver 640 is connected to the fixing jig unit 620 and a pair of movable jig unit 630, by driving a pair of movable jig unit 630 a pair of movable jig unit ( The 630 may be approached or spaced apart from the fixing jig portion 620. A cylinder may be applied as the jig driver 640.

7A and 7B is provided with a cutting jig 600 having a structure as shown in FIG. 7A and FIG. 7B to cut into the front portion 310 in a state in which the vibration preventing dummy protrusion 315 is bitten during cutting of the front portion material 300. In this case, it is possible to mass-produce a good quality product without shaking.

Next, after finishing the front surface manufacturing step (S14) is a front surface, such as Figure 2 and 3 by performing one or more of the polishing, decoration and painting, but the polishing, decoration and painting the front portion round shape 310 is completed cutting It is a process of manufacturing the part (100).

After finishing the front part manufacturing step (S14) is to smoothly process the corner portion, etc. of the processed front portion circular 310 according to the design, and clean up while cutting the corners or edges are not smooth along the shape, and polishing The entire surface is smoothed or processed for the purpose of decoration and corrosion prevention through stamping, engraving, painting (coating), etc. By the processing and finishing of the bridge 110, the rim 120 on both sides of the bridge 110, each of the rim 120, the integral hinge portion 130 of both sides can be made of an integrated front portion 100.

Finally, the leg assembly step (S15) is a process of manufacturing one metal spectacle frame by hinge assembly between the front portion 100 and the leg portion 200 made in a separate process as shown in FIG.

According to the present embodiment having the structure and action as described above, it is possible to manufacture the hinge part-integrated metal eyeglass frame in an efficient manner, as well as to produce the hinge part-integrated metal eyeglass frame without problems such as shaking during cutting. The production yield of high quality metal frames can be improved, and the post-process can be simplified.

In particular, it is possible to mass-produce a hinge-integrated metal eyeglass frame, which was not possible with the conventional method, and to easily produce various shapes of glasses with one extruded material. Can greatly reduce the

In addition, according to the present embodiment, there is an effect that a hinge-integrated metal eyeglass frame can be manufactured using magnesium, which was difficult to process. In addition, there is an advantage that the conventional press molding step is unnecessary. In addition, it is possible to manufacture a metal eyeglass frame, in particular magnesium eyeglass frame without stressing the bending portion between the rim and the hinge portion.

9 is a modified embodiment of the jig for cutting.

Referring to this drawing, the cutting jig 700 is the jig portion for fixing the jig portion 720, the vibration jitter pile projection 315 is prevented during the cutting of the front portion (310) between the fixing jig portion 720. A pair of movable jig parts 730 and a jig driver 750 for forming the bite groove part 710 may be included.

In this structure, the jig driver 750 is applied as a gear type jig driver. That is, in the present embodiment, the gear type jig driver 750 includes a power union gear 751 and a rack gear 752 meshed with the power union gear 751 but coupled to the movable jig part 730. can do. When the rack gear 752 is moved by the action of the powered union gear 751, the guide 740 may be further provided to facilitate the movement of the movable jig portion 730. In FIG. 9, the bite groove portion 710 may have a rectangular shape or a triangle having a long side and a short side as described above.

When the cutting jig 700 having a structure as shown in FIG. 9 is provided and the cutting jig 700 is cut to the front part 310 in a state in which the vibration preventing dummy protrusion 315 is bitten during the cutting of the front part material 300, the shaking Mass production of good quality products

When the cutting

jig

600 and 700 of the present embodiment described above is applied, the hinge part-integrated metal eyeglass frame can be manufactured in an efficient manner, and the hinge part-integrated metal eyeglass frame can be manufactured without closing such as a vibration phenomenon. The production yield of the metal glasses frame can be improved, and the post-process can be simplified.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

Claims

A front part material extrusion step of manufacturing a front part material by continuously extruding a metal material prepared for manufacturing the front part of a metal eyeglass frame;

And cutting the front part material to form a front part circular shape by cutting the front of the spectacle frame.

When continuously extruded in the extruder, the extrusion cross section of the front portion material,

When the front portion is viewed from above or below the front portion of the circular circular metal frame manufacturing method characterized in that it has a curve corresponding to the curve leading from one front rim portion-a bridge portion-the other rim portion.
A front part material extrusion step of manufacturing a front part material by continuously extruding a metal material prepared for manufacturing the front part of a metal eyeglass frame;

And cutting the front part material to form a front part circular shape by cutting the front of the spectacle frame.

When continuously extruded in the extruder, the extrusion cross section of the front portion material,

And a thickness corresponding to the thickness of one rim portion, the thickness of the bridge portion, and the thickness of the other rim portion, respectively, in the front portion circular shape.
A front part material extrusion step of manufacturing a front part material by continuously extruding a metal material prepared for manufacturing the front part of a metal eyeglass frame;

And cutting the front part material to form a front part circular shape by cutting the front of the spectacle frame.

The continuously extruded front part material is a plate-shaped, both sides are bent, the cross-section of the front part material is a metal spectacle frame manufacturing method characterized in that it has a curvature according to the round face shape.
The method according to claim 1 or 2,

The integral hinge portion of the front portion is projected from both sides of the rim to be bent;

The extruded cross-section is protruded from both sides of the metal glasses frame manufacturing method characterized in that the form.
The method according to claim 4,

The integral hinge portion is a hinge pin hole is formed so that the leg can be assembled and rotated, but the through-hole corresponding to the hinge pin hole during extrusion of the front portion material is characterized in that the manufacturing method of the metal eyeglass frame.
The method according to any one of claims 1, 2 or 3,

The front part material is a metal spectacle frame manufacturing method, characterized in that the magnesium or magnesium alloy as a material.
The method according to any one of claims 1, 2 or 3,

The front part material,

The method of manufacturing a metal eyeglass frame, characterized in that the anti-drilling dummy protrusion is formed at a corresponding position of the rim so as to be bitten by the biting groove of the cutting jig to prevent shaking during cutting.
The method according to claim 7,

The cutting jig is,

A fixing jig portion fixed in position;

A pair of movable jig parts disposed on both sides of the fixing jig part while allowing the biting groove part to be formed between the fixing jig part and approaching or spaced apart from the fixing jig part; And

And a jig driving part provided in the fixing jig part and the pair of movable jig parts to drive the pair of movable jig parts.
The method according to any one of claims 1, 2 or 3,

A front part manufacturing step after finishing to manufacture the front part by performing at least one of polishing, decorating and painting the front part circular; And

A leg assembly step of manufacturing a metal frame by assembling the leg part and the front part made by a hinge in a separate process;

Metal glasses frame manufacturing method comprising a.
Metallic spectacle frames manufactured by the manufacturing method of any one of claims 1 to 3.