JP3673465B2 - Die for shape steel shearing and method for adjusting the position of hole die blade in this die - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a die for shearing a shape steel used for shearing a shape steel such as an H-shaped steel and a grooved steel comprising a flange and a web, and a method for adjusting the position of a hole die blade in the die.
[0002]
[Prior art]
Shaped steel such as H-shaped steel and grooved steel made of a flange and a web have a plurality of surfaces and are difficult to cut with a flat blade. Therefore, for example, in cutting H-section steel, a method is known in which the H-section steel 1 is sheared by moving the movable blade in an oblique direction with respect to the fixed blade. FIG. 19 is a front view showing a conventional moving mold for shearing H-section steel. As shown in FIG. 19, the H-shaped steel 1 is passed between the movable blade 8 having the perforated blade 20 matched to the cross-sectional shape of the shaped steel 1 and a fixed blade (not shown), and the movable blade 8 is fixed. The H-section steel 1 is sheared by moving in an oblique direction with respect to the blade. The movement of the movable blade 8 at the time of shearing the H-shaped steel is as follows. When the pressing piece 15 is pushed downward, the hole-type blade 20 is pushed to the left side in the drawing by the restoring mechanism 17 while being guided by the two guide pieces 14. The pressing piece 16 is moved in the lower right direction in the figure while being pushed back in the right direction in the figure to shear the H-section steel. In this case, in order to allow the H-shaped steel 1 to pass through the hole mold of the hole-shaped blade 20, a gap for passing the material between the hole mold and the H-shaped steel 1 is necessary. Needs to be larger than the thickness of the H-shaped steel flange 107 and the web 108 (see FIG. 1).
[0003]
In actual rolling, there are dimensional fluctuations within the tolerances of the flange thickness, web thickness, and web height of the H-shaped steel in the rolling of the same nominal dimension. In order to cut with the blade, it is necessary to further increase the size of the hole shape formed in the blade by the size variation caused by the rolling.
[0004]
However, when there is a large gap between the hole shape of the blade and the H-shaped steel, the H-shaped steel is sheared by moving the moving blade in an oblique direction with respect to the fixed blade, so that the H-shaped steel web and the flange A portion where the blade does not hit the root portion is generated, and the end surface of the H-shaped steel at that portion is cut only at the fracture surface without a shear surface, and the cut surface of the H-shaped steel is deformed.
[0005]
In addition, the cutting of the flange portion of the H-section steel starts from one outside of the flange and the other from the inside of the flange. In this case, from the outside of one flange of the H-section steel to be cut, As for the dimension to the inside of the flange, the hole type dimension of the blade is smaller. For this reason, the flange on the side where cutting starts from the outside starts cutting earlier than the flange on the side where cutting starts from the inside, and one flange of the H-section steel is fixed by the moving blade, and the other flange is fixed The blades are each compressed from the outside, and as a result, the cut surface of the H-shaped steel web is curved. Such deformation of the cut surface has a large variation in tolerance within the H-section steel, and the hot-rolled H-section steel, which requires a larger gap between the hole mold and the H-section steel, has a lighter welding weight. It is more likely to occur than shape steel.
[0006]
In order to avoid this, even for H-shaped steels with the same nominal dimensions, various types of blades formed with a perforated die having an appropriate gap with respect to the dimensions of the H-shaped steel for each rolled rod to be manufactured are prepared. It is necessary to use different blades for the H-shaped steel for each rolled rod to be manufactured. As a result, several types of blades having appropriate gaps for fluctuations in tolerances must be prepared at all times, and the cost of the blades increased the manufacturing cost of the shape steel and was not a practical technique.
On the other hand, for the purpose of solving the above-mentioned problems, it is possible to adjust the gap of the appropriate hole type with respect to the dimensional fluctuation of the H-section steel for each rolling rod in the rolling of the same nominal dimension H-section steel, Japanese Patent Laid-Open No. 11-285915 discloses a technique for cutting with the same blade without changing the blade and reducing the deformation of the cut surface of the H-section steel.
[0007]
This outline is composed of a fixed blade 7 shown in FIG. 20 and a movable blade 8 shown in FIG. 21. The fixed blade 7 divides a part of the hole shape of the cutter and slides in the height direction of the H-shaped steel web. A first perforated blade 20a and a second perforated blade 21a are provided in each of the blade receivers 18 so as to be slidable in the horizontal direction. In addition, an object of the present invention is to obtain a good cut surface by making it possible to appropriately adjust the gap between the H-shaped steel and the second perforated blade 19a with the liner 19b.
[0008]
[Problems to be solved by the invention]
However, in the hole type clearance adjustment mechanism using the slider method of the fixed blade 7 disclosed in Japanese Patent Application Laid-Open No. 11-285915, the upper and lower blade receivers 18 to be slid include the first hole type blade 20a and the second hole. Since a large cutting reaction force from the mold blade 21a must be supported, the structure of the blade receiver 18 has a thick side wall. The thickness portion of the side wall is a range in which the blade does not hit the H-shaped steel web part at the time of shearing, and the portion becomes a cut surface having only a fracture surface without a shear surface, and the cut surface quality is poor. Become.
[0009]
Further, in the hole type adjusting mechanism by the liner 19b of the second hole type blade 19a, the gap of the flange hole type on the adjustment side corresponds to the variation within the tolerance of the dimension from the outside of one flange to the inside of the other flange. The size becomes larger than necessary, and therefore, the range in which the blade of the H-shaped steel web and the base portion of the flange does not hit increases, and the deformation of the cut surface of this portion increases.
[0010]
The present invention has been made in order to solve the above-mentioned problems. If the shape steel has the same nominal dimensions, the same cutting tool can provide a good cutting surface even if the dimensions of the shape steel vary between rolling rods. The present invention provides a mold for shearing a shaped steel and a method for adjusting the position of a hole die in this mold.
[0011]
[Means for Solving the Problems]
The die for shearing of a shape steel according to the present invention comprises a fixed blade and a movable blade each having a hole mold adapted to the cross-sectional shape of the shape steel, and by moving the movable blade in an oblique direction with respect to the fixed blade. In a mold for shearing a shape steel for shearing a shape steel, the fixed blade and the movable blade are configured such that a blade holder is provided inside the mounting frame, a hole blade is provided inside the blade receiver, and the hole blade Is divided into two in the web height direction of the shape steel, and the width of the portion corresponding to the flange thickness of the hole mold can be made variable so that the position of the two divided hole blades can be adjusted.
[0012]
Further, according to the present invention, the method for adjusting the position of the hole-shaped blade in the metal mold for shearing a shaped steel is performed in accordance with the following first and second processes according to the shape of the shape steel to be sheared. A step of positioning the hole cutter blades so as to form the same gap on both sides of the flange thickness of the section steel, a second step: a blade receiver and a blade holder for holding the positions of the respective hole cutter blades positioned. The position of each perforated blade is adjusted and held by the step of fixing the gap with the end face of the perforated blade.
[0013]
Furthermore, the metal mold for shearing a section steel according to the present invention includes a fixed blade and a movable blade each having a hole mold adapted to the cross-sectional shape of the section steel, and moves the movable blade in an oblique direction with respect to the fixed blade. In the structural steel shearing mold for shearing the structural steel, the structure of the fixed blade and the movable blade is provided with a blade holder inside the mounting frame, and a hole-type blade is provided inside the blade receiver, The hole die blade is divided into two in the shape steel web height direction, and the two divided hole die blades each further form a part corresponding to the outer surface of the shape steel flange, and the shape steel flange It is divided into upper and lower parts that form the hole mold of the inner surface portion, and the width of the portion corresponding to the flange thickness and web thickness of the hole mold can be varied to adjust the position of the six-divided hole mold. And
[0014]
In addition, the method for adjusting the position of the hole-shaped blade in the die for shearing a shaped steel that allows the position of the six-divided hole shape of the present invention to be adjusted is the first step according to the shape of the shape steel to be sheared. : Positioning of each punch blade to form the same gap on both sides of the flange thickness of the shape steel, the second step: Position of each punch blade on both sides of the shape steel web thickness And the third step: fixing the gap between the blade holder and the end face of each hole type blade so as to hold the position of each of the hole type blades positioned. It is characterized by adjusting and maintaining the position of the mold blade.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
When shearing shape steels of the same nominal size with the same blade, a large gap must be provided between the hole mold of the blade and the shape steel. In other words, the gap between the flange portions formed in the hole mold needs to be a gap that takes into account both the variation within the tolerance of the flange thickness and the variation within the tolerance of the web height. For example, the case of H-section steel will be described below.
[0016]
FIG. 1 shows a cross-sectional view of the same designation H-section steel. As shown in the figure, with respect to the left flange indicated by the dotted line, the gap on the outer side of the flange is the difference ΔH between Hmax and Hmin plus the gap required for threading, and the gap on the inner side of the flange is Lmax and Lmin. Difference ΔL must be provided. The gaps ΔH and ΔL are gaps provided for fluctuations in the tolerances of the shape steel, and are unnecessary gaps from the viewpoint of gaps that are originally necessary for threading. In particular, in the case of a hot-rolled section steel, the useless gap is large because the dimensional variation within tolerance is large. This useless gap results in deformation of the cut section after shearing. Therefore, if the dimensional variations of ΔL and ΔH of this shape steel can be adjusted on the blade side, the gap of the blade hole mold can be made only the gap that is originally required for threading, and a good cut surface Quality can be obtained.
[0017]
【Example】
Embodiments of the present invention will be described below. Except for the first embodiment, all illustrated and described in the second and subsequent embodiments are moving blades, the same reference numerals are given to the same members, and the description thereof is omitted, and the fixed blade moves except for the moving mechanism. Since it has the same structure as the blade, its description is omitted.
[0018]
Example 1
FIG. 2 shows a metal mold for shearing H-shaped steel according to the present invention, in which (a) is a fixed blade, and (b) is a front longitudinal sectional view showing a movable blade facing the fixed blade.
[0019]
In the H-shaped steel shearing mold of the present invention, the fixed blade 7 and the movable blade 8 constitute a pair of shaped steel shearing molds.
[0020]
First, the structure of the fixed blade 7 shown to Fig.2 (a) is demonstrated. The attachment frame 13 is configured by attaching a side cover 11 to the base plate 10 and attaching a top cover 12 to the side cover. Inside the mounting frame 13, a blade receiver 18 having a mouth-shaped internal space is provided.
[0021]
Inside the blade receiver 18, a first hole type blade 21 and a second hole type blade 22 which are divided into two in the web height direction of the H-section steel 1 are provided. First and second positioning liners 27 and 28 are provided as position adjusting means in the gap between the two-hole type blades 21 and 22, and the first and second holes divided by the increase and decrease of the positioning liners 27 and 28 are provided. The positions of the mold blades 21 and 22 can be adjusted in the web height direction of the H-section steel.
[0022]
A first position holding liner 31 and a second position holding liner 32 are provided as position holding means in the gaps between the first hole type blade 21 and the second hole type blade 22 after positioning and the inner surface of the blade receiver 18, respectively. Is inserted, the positions of the two-hole type blades 21 and 22 can be held in the blade receiver 18.
[0023]
Next, the configuration of the movable blade 8 shown in FIG. A first hole that is divided into two in the web height direction of the H-section steel 1 is formed in the blade receiver 18 provided in the mounting frame 13 formed by the base plate 10, the side cover 11, and the top cover 12. A mold blade 21 and a second hole mold blade 22 are provided. Reference numeral 14 denotes a guide piece, 15 denotes a pressing piece, 16 denotes a pressing piece, and the pressing piece 16 is normally pressed to the left side in the drawing by the restoring mechanism 17 and supports the lower right portion of the blade receiver 18 in the drawing. .
[0024]
In such a configuration, the operation of the movable blade 8 at the time of shearing the H-shaped steel will be described.
[0025]
When the knocker 6 is lowered, the pressing piece 15 formed on the upper part of the blade receiver 18 is pressed downward, so that the blade receiver 18 is guided by the two guide pieces 14 and moves the pressing piece 16 to the right in the figure. Move to the lower right in the figure while pushing back. Thus, the blade receiver 18 acts as the movable blade 8 by moving in the lower right direction in the drawing.
[0026]
Next, how to adjust the positions of the first and second perforated blades 21 and 22 arranged in two parts will be described. FIG. 3 is a front view of the H-shaped steel shearing mold according to the present invention, and shows the first embodiment of the hole-type blade 21 and the second hole mold of FIGS. 2 (a) and 2 (b). An enlarged view of the blade 22 is shown.
[0027]
In FIG. 3, in an H-section steel manufactured by actual rolling, an H-section steel (indicated by a dotted line) having a maximum dimension L (= Lmax) from the outside of one flange 107 to the inside of the other flange 107 is cut. When doing so, the position of the 2nd hole type blade 22 is adjusted to the position shown as a continuous line. Further, when cutting an H-section steel (indicated by a thin line) having a minimum dimension L (= Lmin), the position of the second perforated blade 22 is adjusted to a position indicated by a one-dot chain line. When the material with the dimension L is cut, the position of the second perforated blade 22 is adjusted to a position where ΔL in the middle is zero.
[0028]
Example 2
FIG. 4 is a view showing an alternative of the position holding liners 31 and 32 used for position holding after the positioning of the first hole type blade 21 and the second hole type blade 22 described in FIG.
[0029]
In FIG. 4, the set bolts 33 are screwed into the blade receiver 18, and the positions of the two-hole type blades 21 and 22 can be held by pushing the set bolts 33. After positioning with the set bolt 33, the position is fixed by tightening the nut 34. The first perforated blade 21 and the second perforated blade 22 and the tip of the set bolt 33 do not need to be joined and may be surface touched.
[0030]
Example 3
FIG. 5 is an alternative to the position holding liners 31 and 32 used after the positioning of the first hole type blade 21 and the second hole type blade 22 described with reference to FIG. The bolt 33 is screwed together, and the first position holding wedge 35 and the second position holding wedge 36 are joined to the tip of the set bolt 33, and by moving the set bolt 33 forward and backward, the double-hole type blades 21, 22 are joined. The position of can be held. After positioning with the set bolt 33, the position is fixed by tightening the nut 34.
[0031]
Example 4
6, 7 and 8 use positioning wedges instead of the positioning liners 27 and 28 used for positioning the first and second perforated blades 21 and 22 described in FIG. 2B. FIG.
[0032]
An inclined concave portion 109 that is common to the upper and lower portions of the first hole type blade 21 and the second hole type blade 22 is formed, and the first and second positioning wedges 38 and 39 are sandwiched in the concave portion 109, and the screw mechanism 110. Thus, the wedges 38 and 39 are taken in and out. In addition, about the structure of the position holding after positioning of the 1st hole type | mold blade 21 and the 2nd hole type | mold blade 22, FIG. 6 is (b) of FIG. 2, FIG. 7 is FIG. 4, FIG. This is the same as in FIG.
[0033]
Example 5
FIG. 9 is a front view showing an example in which the H-shaped steel shearing die of the present invention is divided into a plurality of parts. In FIG. 9, the hole-shaped blades divided into two in the web height direction of the H-section steel described in the first embodiment are parts for forming a hole mold corresponding to the outer surface of the flange of the H-section steel. The first hole type blade 105 and the sixth hole type blade 106, and the first hole type blade 101 and the second hole which are upper parts forming the hole shape of the flange inner surface and the web portion of the H-shaped steel. The mold blade is constituted by a total of six parts including the mold blade 102 and the third hole mold blade 103 and the fourth hole mold blade 104 which are the lower parts.
[0034]
Also, positioning liners 27 and 28, position maintaining liners 31 and 32, and positioning liners 29 and 30 are arranged in the direction of forming the flange width, respectively. Thus, the hole shape of the H-shaped steel is formed.
[0035]
Next, how to set the various liners 27, 28, 29, 30, 31, and 32 will be described. The thickness of the liner 32 is set so that the width of the hole mold on the left side of the material is a value obtained by adding a gap of 2 to 3 mm necessary for passing the material to the flange thickness. The thickness of the liner 31 is set so that the width of the hole mold on the right side of the material becomes a value obtained by adding a gap necessary for threading to the flange thickness.
[0036]
Since the dimensional variation of ΔL shown in FIG. 3 has already been zeroed by adjusting the positions of the liners 27 and 28, the gap between the material of the flange portion and the hole mold is 2 to 3 mm, which is necessary for material passage. It becomes only. Further, the thicknesses of the liners 29 and 30 are set so that the hole mold forming the blade web has a value obtained by adding a 2-3 mm gap necessary for threading to the web thickness of the material.
[0037]
By configuring the moving blade, the fixed blade and the liner of the die for shearing the shape steel in this way, it is possible to prevent a change in dimension of the H-shaped steel for each rolling rod in rolling of the H-shaped steel having the same nominal size. It is possible to adjust the gap of the hole mold, that is, the gap with the same hole mold blade can be reduced to only a gap originally necessary for threading, for example, about 2 to 3 mm without exchanging the blade, and good cutting Surface quality can be obtained.
[0038]
FIG. 10 is an alternative to the position-holding liners 31 and 32 used after the positioning of the first to sixth hole-type blades 101 to 106 described with reference to FIG. 9. As described with reference to FIG. The set bolt 33 is screwed onto the two, and the position of the double-hole type blade is held by pushing the set bolt 33 and tightening the nut 34.
[0039]
FIG. 11 is an alternative to the position holding liners 31 and 32 used after the positioning of the first to sixth hole-type blades 101 to 106 described with reference to FIG. 9. As described with reference to FIG. The set bolt 33 is screwed to the first bolt, and the first and second position holding wedges 35 and 36 are joined to the tip of the set bolt 33, and the position of the double-hole type blade is held by the advance and retreat of the set bolt 33. To do.
[0040]
FIGS. 12, 13 and 14 are alternatives to the positioning liners 27 and 28 used for positioning the first to sixth hole-type blades described with reference to FIG. 7 and FIG. 8, the inclined concave portion 109 common to the upper and lower portions of the first to fourth hole-type blades is formed, and the first and second positioning wedges 35 and 36 are sandwiched in the concave portion. The wedges 35 and 36 are taken in and out by the screw mechanism 110. As for the position holding structure of the first to sixth hole-type blades after positioning, FIG. 12 is the same as FIG. 6, FIG. 13 is the same as FIG. 7, and FIG. 14 is the same as FIG. Description is omitted.
[0041]
Example 6
FIG. 15 is a front view showing another example of dividing the H-shaped steel shearing mold of the present invention.
[0042]
In FIG. 15, the direction of the H-section steel is turned 90 degrees with Examples 1 to 5 and turned sideways.
[0043]
The hole type blade of the present embodiment is a fifth hole type blade 105 and a sixth hole type blade 106 which are parts forming a hole type corresponding to the outer surface of the flange, and the flange inner surface and web portion of H-shaped steel. The first hole-type blade 101 and the second hole-type blade 102 which are the right parts forming the hole type, and the third hole-type blade 103 and the fourth hole-type blade 104 which are the left parts as well. A perforated blade is composed of a total of six parts.
[0044]
Positioning liners 27, 28, 29, 30, a first position holding wedge 35 and a second position holding wedge 36 are arranged in the direction in which the web height of each part is formed. The hole type blade is formed by fixing the hole type blade with the nut 34.
[0045]
The mold having this structure is suitable for cutting a welded H-shaped steel that matches the direction of the material when manufacturing the H-shaped steel.
[0046]
Example 7
In the above-described embodiments, the H-shaped steel is used as the application die for shearing the shape steel of the present invention. However, the shape steel to which the mold of the present invention is applied is limited to this. As an embodiment of the present invention, the present invention can be applied to a grooved steel as shown in FIG.
This embodiment is different from the embodiment shown in FIG. 8 in that the hole shape of the first hole-type blade 21 and the hole shape of the second hole-type blade 22 are H-shaped, whereas they are groove-shaped. The structure of the positioning wedges 38 and 39 and the position holding wedges 35 and 36 of the other perforated blades is the same.
[0047]
Example 8
Next, an actual application example of the H-shaped steel shearing die will be described with reference to FIG. FIG. 17 shows a side view of the main part of an H shear used for high-speed cutting of H-section steel.
[0048]
In the figure, 1 is an H-shaped steel, 2 is an H shear mold, 3 is a traveling control unit, 4 is a shear drive unit, 15 is a pressing piece, 6 is a knocker, 7 is a fixed blade, 8 is a moving blade, and 9 is a moving blade. The direction of the material is shown. The H shear is a H shear mold 2 having a fixed blade 7 having a H-shaped hole blade and a movable blade 8, and a H-section steel 1 passing through the H shear mold 2 from a standby position to a cutting completion position during a cutting operation. The traveling control unit 3 travels in synchronization with the speed and returns to the standby position after completion of the cutting, and the movable blade 8 is instantaneously moved by hitting the pressing piece 15 with the knocker 6 while traveling in linkage with the traveling control unit 3. And a shearing drive unit 4 that performs cutting by moving to the position.
[0049]
FIG. 18 shows a cross-sectional view of an H shear mold incorporating the H-shaped steel shearing mold of the present invention.
[0050]
As shown in the figure, the H shear mold 2 has a fixed blade 7, a moving blade 8, and a retainer 19 that slidably presses the moving blade 8 against the fixed blade 7 in order from the upstream on the base plate 10. The cover 11 and the top cover 12 hold it. A flange guide 112 and a web guide 113 for guiding the entry of the H-section steel 1 are provided in an expanded tube on the entry side of the fixed blade 7.
[0051]
In such a configuration, at the time of cutting work, while the H shear mold 2 is running in synchronization with the material passing speed of the H-section steel 1, the pressing piece is struck by a knocker 6 (not shown), and the movable blade 8 is instantaneously tilted to the lower right. Move to. Thereby, the H-section steel 1 is cut | disconnected instantly with a both-bladed tool.
[0052]
In the above embodiments, the means for adjusting the position of the hole-type blade is one selected from a liner, a set bolt, or a wedge, and the means for holding the position of the hole-type blade is a liner, a set bolt, or a wedge. It was explained as one of the choices. However, the position adjusting / holding method of the present invention is not limited to the above-described embodiment, and is described in, for example, the above-described FIG. 7, FIG. 8, FIG. 13, FIG. In such a configuration, the position adjustment / holding method detects the shape of the shape steel targeted for shearing beforehand, and based on the detection information, a set bolt, a wedge, etc., not shown in the figure, a cylinder, a motor, etc. It is also possible to automatically advance and retract by this, whereby the method for adjusting the position of the hole-type blade in the field is automated and labor saving is possible.
[0053]
【The invention's effect】
According to the present invention, a rod-shaped gap with the same blade can be adjusted to a gap that is originally required for threading, for example, only 2 to 3 mm. Even if the dimensions fluctuate between, a good cut surface can be obtained with the same blade.
[Brief description of the drawings]
FIG. 1 is a diagram showing a dimensional variation of an H-section steel actually rolled with the same nominal dimension.
FIG. 2 shows a metal mold for shearing H-shaped steel of the present invention, in which (a) is a longitudinal sectional view showing a fixed blade and (b) a moving blade.
FIG. 3 is an enlarged front view of a mold for shearing H-section steel of the present invention.
FIG. 4 is a front view showing an example in which a position holding set bolt is used.
FIG. 5 is a front view showing an example in which a position holding wedge is used.
FIG. 6 is a front view showing an example in which a positioning wedge is used.
FIG. 7 is a front view showing an example in which a positioning wedge is used.
FIG. 8 is a front view showing an example in which a positioning wedge is used.
FIG. 9 is a front view showing an example in which the H-shaped steel shearing die of the present invention is divided into a plurality of parts.
10 is a front view showing a position holding liner of Example 5. FIG.
FIG. 11 is a front view showing a position holding wedge according to a fifth embodiment.
12 is a front view showing a mold positioning wedge according to Embodiment 5. FIG.
13 is a front view showing a mold positioning wedge according to Embodiment 5. FIG.
14 is a front view showing a mold positioning wedge according to Embodiment 5. FIG.
FIG. 15 is a front view showing a lateral H-shaped steel shearing die according to the present invention.
FIG. 16 is a front view showing a grooved steel shearing die according to the present invention.
FIG. 17 is a side view of an essential part of an H shear to which a mold according to the present invention is applied.
FIG. 18 is a side view of the H shear mold of the present invention.
FIG. 19 is a front view showing a conventional moving mold for shearing H-section steel.
FIG. 20 is a front view showing a conventional fixed blade for shearing H-shaped steel.
FIG. 21 is a front view showing a conventional moving blade for shearing H-shaped steel.
[Explanation of symbols]
1. H-section steel H shear mold Travel control unit 4. 4. Shear drive unit Hammer 6 Knocker 7. Fixed blade 8. 8. Moving blade Direction of threading 10. Base plate 11. Side cover 12. Top cover 13. Mounting frame 14. Guide piece 15. Pushing piece 16. Pressing piece 17. Restoration mechanism 18. Blade receiver 19. Retainer 19a. Second perforated blade 19b. Liner 20. Perforated blade 20a. First perforated blade 21a. Second perforated blade 21. First perforated blade 22. Second perforated blade 27. First positioning liner 28. Second positioning liner 29. Third positioning liner 30. Fourth positioning liner 31. First position retention liner 32. Second position retaining liner 33. Set bolt 34. Nut 35. First position retaining wedge 36. Second position retaining wedge 38. First positioning wedge 39. Second positioning wedge 101. First perforated blade 102. Second perforated blade 103. Third hole type blade 104. Fourth hole type blade 105. Fifth hole type blade 106. Sixth hole type blade 107. Flange 108. Web 109. Recess 110. Screw mechanism 112. Flange guide 113. Web Guide 114. Channel steel

Claims (7)

A die for shearing of a shape steel, which comprises a fixed blade and a movable blade each having a hole mold adapted to the cross-sectional shape of the shape steel, and shears the shape steel by moving the movable blade in an oblique direction with respect to the fixed blade. The fixed blade and the movable blade have a structure in which a blade holder is provided in the mounting frame, a hole blade is provided in the blade holder, and the hole blade is divided into two in the web height direction of the shape steel. In addition, a die for shearing a shape steel, characterized in that the width of a portion corresponding to the flange thickness of the hole mold can be varied to adjust the position of the two-divided hole blade. Position adjustment means are provided in the gap between the divided hole-type blades, and position holding means are provided in the gap between one of the hole-type blades and the blade holder and the gap between the other hole-type blade and the blade holder, respectively. The mold for shearing a section steel according to claim 1 characterized by the above-mentioned. 3. The die for shearing a structural steel according to claim 2, wherein the position adjusting means is a liner, and both of the position holding means are one selected from a liner, a set bolt or a wedge. The shape steel shearing mold according to claim 2, wherein the position adjusting means is a wedge, and both of the position holding means opposite to the wedge are selected from a liner, a set bolt or a wedge. A die for shearing of a shape steel, which comprises a fixed blade and a movable blade each having a hole mold adapted to the cross-sectional shape of the shape steel, and shears the shape steel by moving the movable blade in an oblique direction with respect to the fixed blade. The fixed blade and the movable blade have a structure in which a blade holder is provided inside the mounting frame, a hole blade is provided inside the blade receiver, and the hole blade is divided into two in the web height direction of the shape steel. In addition, the hole mold blade divided into two parts is further divided into a part that forms the hole mold corresponding to the outer surface of the flange of the shape steel and an upper and lower part that forms the hole mold of the inner surface of the flange of the shape steel. A die for shearing a shape steel, wherein the width of the portion corresponding to the flange thickness and web thickness of the hole mold can be varied to adjust the position of the six-divided hole mold. A die for shearing of a shape steel, which comprises a fixed blade and a movable blade each having a hole mold adapted to the cross-sectional shape of the shape steel, and shears the shape steel by moving the movable blade in an oblique direction with respect to the fixed blade. The fixed blade and the movable blade have a structure in which a blade holder is provided inside the mounting frame, a hole-making blade is provided inside the blade receiver, and the hole blade is divided into two in the web height direction of the shape steel. In addition, the width of the portion corresponding to the flange thickness of the hole mold can be varied to adjust the position of the hole mold blade divided into two, and the position adjustment method of the hole blade in the mold for shearing a shape steel is possible. The hole in the die for shearing a structural steel is characterized in that the position of each of the perforated blades is adjusted and held in advance by the following first and second steps according to the shape of the shape steel to be sheared. Method for adjusting the position of the mold blade.
1st process: The process of positioning the position of each hole type blade so that the same clearance gap may be formed in the both sides of the flange thickness of a shape steel. 2nd process: In order to hold | maintain the position of each said position hole mold blade The process of fixing the gap between the blade holder and the end face of each perforated blade A die for shearing of a shape steel, which comprises a fixed blade and a movable blade each having a hole mold adapted to the cross-sectional shape of the shape steel, and shears the shape steel by moving the movable blade in an oblique direction with respect to the fixed blade. The fixed blade and the movable blade have a structure in which a blade holder is provided inside the mounting frame, a hole blade is provided inside the blade receiver, and the hole blade is divided into two in the web height direction of the shape steel. In addition, the hole mold blade divided into two parts is further divided into a part that forms the hole mold corresponding to the outer surface of the flange of the shape steel and upper and lower parts that form the hole mold of the inner surface of the flange of the shape steel. In this method, the position of the punch blade in the die for shearing a shape steel in which the width of the portion corresponding to the flange thickness and the web thickness of the hole mold can be varied to adjust the position of the six-divided hole shape. In accordance with the shape of the shape steel to be sheared, the following first to first Of the process, the position adjustment method grooved blade in a mold for shaped steel shear and adjusting and holding the position of each of the grooved edge.
1st process: The process of positioning each hole shape blade so that the same clearance gap may be formed on both sides of the flange thickness of the shape steel. 2nd process: The position of each hole shape blade on both sides of the web thickness of the shape steel. The step of positioning so as to form the same gap in the third step: The step of fixing the gap between the blade holder and the end face of each hole type blade so as to maintain the position of each hole type blade positioned as described above.

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