KR20130053669A - Method of manufacturing a bracket having the serration of the surface for preventing movement - Google Patents

Abstract

PURPOSE: A method for manufacturing a fastening bracket with a serration surface for preventing slide is provided to obtain the depth of the serration capable of maintaining a fastening force by forming the deep serration on the surface while manufacturing in large quantities. CONSTITUTION: A method for manufacturing a fastening bracket with a serration surface for preventing slide comprises: a step of forming the serration surface to fit the size of a bracket in a constant interval(S1); a step of cutting the serration surface to fit the size of the bracket in a constant interval(S2); a step of forming a bolt fastening hole on each flat steel slab(S3); a step of perpendicularly bending the flat steel slab(S4); and a step of melting-plating the bracket with zinc(S5). [Reference numerals] (S1) Form a serration surface on a steel plate using a V-cutting machine; (S2) Cut the plate to a required size; (S3) Punch an elongated hole for fastening a bolt; (S4) Bend to form a bracket; (S5) Perform hot-dip galvanizing; (S6) Weld a reinforcing rod

Description

Method of manufacturing a bracket having the serration of the surface for preventing movement}

The present invention relates to a processing method for forming irregularities on the surface of the bracket and tightening washer used to fasten the structure to each other, in particular, even in the state of hot-dip galvanizing while being able to easily and efficiently process the bracket and the washer for tightening The fastening bracket between the bracket and the washer can be deeply formed in the unevenness of the contact surface to maintain the fastening force between the bracket and the washer so that the relative movement (cushion) between the bracket and the washer does not occur even with a large external force. It relates to a processing method.

In general, when building or other steel structures, two parts are connected to each other by using brackets. In this way, when connecting parts of a structure by using brackets, welding is also performed through each other. In many cases, it is common to use bolts and nuts for easy disassembly when connecting using brackets.

In this way, when connecting structural components with bolts and nuts through brackets, when the vibration of the structural components is applied, the contact surface of the bracket or the contact surface between the fastening nut and the bracket and the contact surface between the bracket and the washer are loosened. This may occur when the fastening state cannot be maintained normally.

1 is a perspective view showing an example of mounting a glass wall on the outer surface of a building when a large building is constructed these days. The bracket 102 is installed on the concrete wall 101 of the building, and the bracket 102 is shown. The support structure 103 for mounting the glass wall is connected to the bracket, wherein the bracket 102 is firmly fastened to the concrete wall 101 and the support structure 103, even when an external force such as wind or vibration is applied. Various methods have been proposed for maintaining a firm fastening force by preventing relative movement between the concrete wall 101 and the support structure 103.

For example, in Utility Model Registration No. 20-415224, "bolt and nut bite prevention structure", a structure to be fastened by forming a plurality of one-way unevenness on the contact surface of the bolt head, the contact surface of the nut and both contact surfaces of the washer, respectively. When the bolts and nuts are tightened on both sides, the ruggedness formed in one direction is brought into intimate contact with the structure, and the fastening force between the washer and the nut is maintained closely, thereby increasing the fastening force of the structure.

However, the device according to the present invention can not prevent the slip between the structure and the bolt head due to the external force applied to the structure because only the irregularities are formed only on the contact surface of the bolt head and nut, it is formed on the bolt and nut Since the formation area of the uneven surface is small, there is a problem that it is impossible to properly grasp the slip between the structure and the bolt.

On the other hand, "bracket assembly structure of the structural cosmetic material" of Patent Registration No. 10-1060476 is a washer that directly contacts the bracket to prevent the fastening force between the bracket and bolt when the two brackets are fastened by one bolt and Each of the anti-rolling recesses of about 1mm is processed on the contact surface of the bracket, and when the two brackets are bolted, the recesses of the washers are interlocked with the anti-rolling recesses of the bracket, so that even if an external force is applied to the structure connected to the bracket By preventing the relative movement with each other by the anti-slip recess formed in the washer and the washer, the structure to be fastened by the bracket to maintain the state that is firmly fastened.

In addition to the above invention, in various devices, irregularities are formed on the contact surface between the bracket and the structure or the contact surface of the bracket, the washer and the nut, and the structure or the washer and the nut are contacted by the uneven contact even when an external force is applied to the structure or the bracket or the bolt. Several devices and structures have been proposed that prevent relative movements of.

However, the surface serrations formed to prevent relative movement of brackets and washers in the above-described inventions and various proposed devices are generally about 2.0 mm at a depth of about 1,0 mm due to processing methods and productivity problems. Since the concave and convexities are formed on the contact surface between the bracket and the washer, the contact depth between the concave and convexities is shallow, so that a large external force is applied to the structure connecting through the bracket. There was a problem that can not fully support the surface anti-skid function because it can not support.

In addition, in the case of steel structures, plating should be performed on brackets and washers to prevent rust. Electroplated galvanizing requires a thin plated layer, so even if the depth of the unevenness is deep, it is a problem that the rust preventive function is weak due to the thin plated layer. There is.

Therefore, when the hot-dip galvanized plating layer to obtain a perfect rust preventive function, there is a problem that the rough surface is almost eliminated due to the thickness of the plating can not exhibit any surface milling prevention function. As a solution to this problem, various mechanical processing methods for forming surface irregularities can be considered. For example, if the surface irregularities are formed using a milling machine, the depth of the irregularities can be deeply formed, but the productivity is low due to the slow processing speed. There is a problem in that it is not suitable for the method of mass production.

In the case of press working in a different manner, the productivity can be increased, but there is a fundamental problem as described above because the depth of the unevenness cannot be deepened.

In addition, although the unevenness can be formed on the surface by using the hot forging method and the rolling method by the forming (foaming), these methods can also deepen the depth of the unevenness, but the investment cost is high and the productivity is low. This is not applicable in the actual field.

Accordingly, the present invention solves the various problems of the above-described problem of forming irregularities on the surface of the bracket for fastening the structure, and enables to produce a large amount at a time, while deeply forming the irregularities on the surface to sufficiently melt the plating. It is an object of the present invention to provide a method for processing a fastening bracket having a concave-convex surface to obtain a depth of concave-convex to maintain.

The method of the present invention for achieving the object of the above, by forming a plurality of V grooves in accordance with the size of the bracket to be molded by using a V-cutting machine to the original plate of the iron plate, the V groove formed circle After cutting the steel plate to the required length, punching the bolt fastening hole is formed by pressing, bent and formed into various shapes required, and finally completed by hot-dip galvanizing with a material such as zinc.

Then, after bending and molding as necessary, it may be completed by welding the components of the structure in advance and then hot-dip plating.

In the manufacturing method of the fastening bracket of the present invention made of the process as described above, using a V-cutting machine to form a groove on the disc of the iron plate, and then cut and processed to the required dimensions at the same time several brackets in one operation I can make it.

In particular, according to the method of the present invention when forming the uneven grooves in the disc of the iron plate together by forming a fastening groove with a CNC V-cutting machine can form a deep uneven grooves in a simple and quick operation to improve productivity at low cost You can get a boost effect.

1 is a side view showing a general method of mounting the glass outer wall through the bracket on the concrete wall of the building,
2 is a block diagram showing a process of manufacturing a bracket according to the present invention;
3 (a) (b) (c) (d) (e) is a perspective view sequentially showing the manufacturing process of the bracket made according to the method of the present invention,
Figure 3 (f) is a perspective view showing a washer made according to the method for making a bracket according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a block diagram showing a process for manufacturing a bracket according to the present invention, Figure 3 (a) (b) (c) (d) (e) shows a bracket made in accordance with the method of the present invention sequentially Perspective view.

In the manufacturing method of the bracket according to the present invention, as shown in the block diagram of FIG. 2 and FIGS. 3 (a) (b) (c) (d) (e), first, the V-cutting machine is formed on the entire disc 1 of the iron plate. Using the groove (1) in the longitudinal direction or the width direction to form a continuous V groove to form a concave-convex surface (2), the concave-convex surface (2) is formed at regular intervals in accordance with the size of the bracket to be manufactured By doing so, a plurality of uneven group 20 is formed (S1).

Here, the original plate (1) of the iron plate is generally used to cut the length and width required to be produced and provided in the steel mill, the iron plate (1) of the iron plate is of various types, for example, the size of 2300mm horizontal, 1300mm vertical You can use what's done.

The V-cutting machine uses a computer-controlled CNC V-cutting machine, which can form grooves 2.0 mm deep and 4.0 mm wide, and these grooves are adjacent to each other in parallel and continuous. By forming a large number, the uneven surface required by the present invention can be made.

The number of grooves to be formed continuously in parallel by using the V-cutting machine is different depending on the size of the bracket. Generally, the fastening bracket used to fix the glass outer wall of a building continuously forms the required number of grooves continuously. To make the uneven surface to obtain the desired clamping force.

In general, the V-cutting machine is used to form a shallow groove in the folded portion to be folded at right angles when bending the iron plate at right angles, and generally digging a shallow groove about 0.6 mm in a thin iron plate of about 1.2 mm, By making the grooves be folded at right angles to the center, the folded portions are used to be folded in the form of right angles without being rounded.

As described above, the general V-cutting machine can form a groove having a depth of 2.0 mm and a width of 4.0 mm even on a thick steel sheet having a thickness of 10 mm or more.

On the other hand, the concave-convex surface 2 formed on the disc 1 of the iron plate, as shown in Figure 3 (a) to form a plurality of side by side to form the concave-convex group 20, this concave-convex group 20 The number and spacing of the concave-convex surface 2 to form a variable can be adjusted according to the size of the bracket to be manufactured.

Subsequently, as shown in (b) of FIG. 3, the plurality of individual divided planes are divided and cut by cutting the iron plate of the disc 1 horizontally and vertically in accordance with the interval of the uneven surface 2 made in the uneven surface forming step S1. Steel plate 3 is made (S2).

By dividing and cutting one original plate 1 horizontally and vertically in this manner, a large number of divided flat iron plates 3 having uneven surfaces 2 can be simultaneously formed, thus greatly simplifying the manufacturing process of the bracket. It will be able to produce in large quantities.

Then, as shown in Figure 3 (c) to the split flat iron plate (3) made in the transfer step (S2), the bolt fastening hole (4) for fastening the bolts are drilled (S3).

Although the drawings show that two holes 4 are drilled, respectively, one hole 4 may be drilled and two or more holes may be drilled as needed. It is not important in the invention.

The long hole forming step (S3) is bent to form a bracket (5) by bending the flat iron plate (3) (S4).

Here, the angle of bending the flat iron plate 3 may be bent at an appropriate angle according to the position to which the molded bracket 5 is to be mounted. Alternatively, it may be formed at an acute angle.

Then, zinc is plated on the bent bracket 5 (S5). Since zinc of sufficient thickness is coated on the bracket 5 by hot-dip zinc, the problem that the bracket 5 is corroded by weather or the like even when the bracket 5 is exposed to the outside can be prevented from occurring.

On the other hand, by forming the uneven surface 2 using the V-cutting machine according to the present invention, since the depth of the uneven surface is sufficiently deep as described above 2mm or more, zinc of sufficient thickness is melted on the uneven surface 2. Even if plated, since the depth of the uneven surface 2 can maintain a state of sufficient binding force, the use of the bracket 5 according to the present invention can obtain sufficient binding force between the washers and neighboring brackets in contact with each other. will be.

Therefore, even when the structure for connecting the inner concrete wall and the outer glass wall of the building using the bracket 5 made in accordance with the present invention, the engaging surface of the bracket 5 by the large external force applied to the glass wall Alternatively, when the fastening surfaces of the bracket 5 and the bolt are pushed and shifted from each other, the problem of not maintaining the initial fastening force can be prevented from occurring.

On the other hand, if necessary, as shown in Figure 3 (e) to the bracket 5 bent through the bending step (S4), the reinforcing bar 6 can be welded to increase the strength of the bracket (5). There is (S6).

After installing the reinforcing bar (6) in this way again through the hot dip galvanizing (S5) process to be able to completely prevent corrosion.

On the other hand, the washer 7 used to fasten the bolt to the bracket (5) made in accordance with the present invention is also coupled to the groove as shown in Figure 3 (f) deep in the surface with a V-cutting, as in the present invention (8) is formed by hot-dip galvanizing the washer (7) and then bolted to the washer (7) in which the coupling groove (8) is formed, the bracket (5) and the washer (7) is closely coupled through the deep coupling groove To be.

As described above, the manufacturing method of the fastening bracket according to the present invention, generally using a V-cutting machine used to cut a portion of the surface of the iron plate in a straight line to bend the thin iron plate at a right angle, to the surface of the iron plate By forming the concave-convex surface for enhancing the binding force, the depth of the concave-convex surface is sufficiently maintained even if the zinc hot dip plating is performed, so that the effect of preventing the occurrence of rolling can be obtained.

In addition, when the bracket is manufactured according to the method of the present invention, a large number of brackets can be manufactured at low cost by collectively forming the uneven surface on the original plate of the iron plate, cutting it to the required size, and then bending molding. The effect can be obtained.

1- Disc 2-Uneven Side
3-Split Flat Plate 4-Long Hole
5-Bracket 6-Reinforcement
7-washer 20-irregularities

Claims (2)

In order to form the uneven surface 2 by continuously forming the V groove in the longitudinal direction or the width direction using a V-cutting machine to the original plate (1) of the iron plate produced in the steel mill, the uneven surface (2) By forming at regular intervals in accordance with the size of the bracket to form, a plurality of uneven group forming step (S1) to be formed; Cutting step (S2) to make a flat plate (3) by cutting at regular intervals in accordance with the interval of the uneven surface (2) made in the uneven group forming step (S1) and the size of the bracket to be manufactured; A long hole forming step of drilling a bolt fastening long hole 4 in the individual flat iron plate 3 cut in the cutting step (S3); A bending step (S4) of bending the flat iron plate (3) through the long hole (4) at right angles to form a bracket (5); Method of processing a fastening bracket having a bump-resistant uneven surface consisting of a hot-dip galvanizing step (S5) for hot-dip galvanizing zinc on the bent bracket 5
The method of claim 1, further comprising a welding step (S6) for welding the reinforcing bar (6) to increase the strength to the bracket (5) through the bending step (S4) is provided Processing method of tightening bracket

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