JPS6245427A - Joining face forming method for shape material - Google Patents

Abstract

PURPOSE:To prevent the destruction of the anodic oxidation coatings at a corner projecting part by bending a vertical wall in curving shape in the horizontal wall direction, then by forming a joining face by cutting the shape material with the cutting line passing through the bend part of the vertical wall. CONSTITUTION:A bending part 1a'' is formed by bending the vertical wall 1a of a shape material 1 in curving shape so as to direct the tip edge thereof for the vertical wall 1a' at the other part. Then, a joining face 1d is formed by cutting the shape material 1 with the cutting line 1c which is at 45 deg. for 90 deg. corner angle to be formed by the shape material 1, 2. A corner part 10 is formed by forming a joining face 2d similarly for the shape material 2 and by joining the shape material with the joining face 1d, 2d. With this method the destruction of the anodic oxidation coatings on the surface of the corner projecting part can be prevented due to the bending radius of the corner part on the joining face being made possible larger.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a method for forming a joint surface of a corner portion of a profile used for, for example, sash, f-sliding, and fence thatch.

(Prior Art) Conventionally, as shown in FIG. 8, for example, as shown in FIG. 100c to the other side wall 100d, and then, as shown in FIG. 9, the side wall 1 of the profile 100 is
In some cases, corner portions 101 are formed by bending 00d.

(Problems to be Solved by the Invention) However, in the above-described method of forming a joint surface of a profile, the bending radius becomes small, so when the profile 100 is bent, the anodic oxide film on the surface of the corner protrusion is destroyed. This creates an unsightly appearance, and since the shaped material must be transported while being bent and formed, there are problems in the case of long materials, which are very disadvantageous in terms of continuous transportation and storage. .

This invention was made by focusing on the above-mentioned conventional problems, and involves increasing the bending radius when forming the joint surfaces of shapes to destroy the anodic oxide film on the surface of the corner protrusion. It is intended to be difficult.

[Structure of the Invention] (Step F for Solving Problems) The method for forming joint surfaces of sections according to the present invention is to form a vertical wall and a horizontal wall in which joint surfaces formed at arbitrary inclination angles are butted to form a corner part. In the method of forming a joining surface of a profiled section, the vertical wall is curved in the direction of the horizontal wall, and then the vertical wall is bent at an angle corresponding to the angle of the corner to be formed by butting it together. It is characterized by forming a joint surface at a predetermined angle by cutting the profile along a cutting line that passes through the curved portion.

(Example) FIGS. 1 to 4 are diagrams showing an example of the method for forming a joint surface of a profile according to the present invention.

In FIG. 1, a vertical wall 1a and a horizontal wall 1b form a cross-sectional path, and a vertical wall 1a' opposite to the vertical wall 1a is shown.
and the side 'j! opposite to the side wall 1b! : 1
1 shows a profile 1 with a rectangular hollow cross section with b'; The end portion is cut at an angle of 90 degrees.

Next, as shown in FIG. 2, a curved portion 1a'' is formed by bending the vertical wall 1a in a curved manner so that its leading edge faces the other vertical wall 1a'.

Next, as shown in Fig. 4, which will be described later, since the angle of the corner formed by butting the sections (1 and 2) together is a right angle, the angle of 45 degrees is made as shown in Fig. 2. However, since the bent end portion of the vertical wall 1a has a large degree of distortion, the cutting line 1c is cut along the oriented portion 1a'' while avoiding the distortion.
Let the cutting line pass through . By cutting along this cutting line 1c, the shape 1 is cut as shown in FIG.
A linear bonding surface 1d is formed on.

Next, the joint surfaces 2d of the shapes 1 and 2, each having a linear joint surface 1d shown in FIG. 3, were butted together to form a 90-degree corner 10 as shown in FIG. Let the state be m.

FIGS. 5 to 7 are diagrams showing other embodiments of the method for forming joint surfaces of shapes according to the present invention.

FIG. 5 shows a shaped member 1 having a substantially rectangular hollow cross section in which a shoulder portion 1e where a vertical wall 1a and horizontal walls 1b, 1b' intersect is formed into a curved shape. The end portion is cut at an angle of 90 degrees.

Next, as shown in FIG. 6, a curved portion 1a'' is formed by bending the vertical wall 1a in a curved manner so that its leading edge faces the vertical wall 1a'.At this time.

Since the shoulder portion 1e is curved, distortion occurring at the bent portion can be suppressed to a small level. Next, as in the embodiment shown in FIGS. 1 to 4, since the angle of the corner formed by butting the sections is a right angle, as shown in FIG. A curved portion 1a'' at the tip, a pair of upper and lower horizontal walls 1b
, 1b' and the other vertical wall 1a' with a 45 degree angle cut v;j, 1c. In the above manner, as shown in FIG. 7, it is possible to obtain a profile in which the end edge of the vertical wall 1a is curved and a straight joint surface 1d is formed on the lateral sides Ill b and 1 b'. .

Therefore, the method according to the present invention is fully applicable to shapes having a relatively round cross section or having a large wall thickness.

[Effects of the Invention] As explained above, according to the method for forming a joint surface of a profile according to the present invention, a joint surface formed at an arbitrary inclination angle is brought into contact with each other to form a corner portion, and the joint surface is formed of a vertical wall and a horizontal wall. Cross-sectional path "In the method of forming a joint surface of a profiled material, the vertical wall is curved in the direction of the horizontal wall, and then the curved part of the vertical wall is formed at an angle corresponding to the angle of the corner part formed by butting. By cutting the shape material along a cutting line that passes through the section, a joint surface of a predetermined angle is formed. This method has the excellent effect of making the anodic oxide film of the material difficult to break, and compared to the method of simply cutting the end of the shape at an angle, the corner protrusion is less likely to shift due to an error in the angle cutting, and the shape is sharp. Since there are no parts, there is no danger to the human body, and the design has an excellent balance after assembly.

[Brief explanation of drawings]

1, 2, 3, and 4 show an embodiment of the method for forming a bonded surface according to the present invention, and FIG. 1 is a perspective view;
2 to 4 are plan views, FIG. 5, FIG. 6, and FIG. 7 show other embodiments of the method for forming joint surfaces of sections according to the present invention. FIG. 7 is an 11th view, and FIGS. 8 and 9 are plan views showing a conventional method for forming joint surfaces of shapes. 1.2... Shape, la, la'... Vertical wall, 1a''... Bent part of vertical wall, 1 b, 1 b'... Horizontal wall IC... Cutting line, 1d...・Joint surface. Patent applicant Sankyo Aluminum Shigyo Co., Ltd. Representative Patent Attorney Elementary 11! Yutaka 1b' No. 60 IC1a Fig. 7

Claims (1)

[Claims] (1) In a method for forming a joint surface of a profile with a cross-section approximately ■-shaped, consisting of a vertical wall and a horizontal wall, in which joint surfaces formed at arbitrary inclination angles butt against each other to form a corner part, the vertical wall is moved in the direction of the horizontal wall. After bending into a curved shape, a joint surface of a predetermined angle is formed by cutting the profile at an angle corresponding to the angle of the corner part to be butted and along a cutting line that passes through the curved part of the vertical wall. A method for forming a joint surface of a profile, characterized by: