JP3241682U - Bending system for spiral blades - Google Patents

Abstract

Kind Code: A1 A bending system capable of efficient and highly accurate forming is provided by avoiding the complexity of repetitive resetting operations including transporting, repositioning, and turning over an original plate. A holder blade having a mountain-shaped or trapezoidal blade portion inserted into a cut portion of a C-shaped flat plate processed material, and a vertically oriented flat plate processed material having right and left oblique lower portions attached to the flat plate processed material. Left and right grabber rods with concave tip faces are held from below so that the plate surface is oriented vertically, and the holder blade and grabber cylinder are used to hold the plate surface vertically. It is equipped with an "unevenness processing blade" that sandwiches a press area including an arc from both sides of two flat plate surfaces and a press cylinder. Even if the "concave processing blade" and the "convex processing blade" are pinched against each other by the horizontal press of the press cylinder, the left and right grabber rods are still pinched from the left and right oblique lower part so that the plate surface of the flat plate processed material is kept in the vertical direction. keep holding pressure. [Selection drawing] Fig. 4

Description

The present invention relates to a bending system for a spiral blade used as a part of an earth auger device. Here, the spiral processing blade refers to a shape in which a base plate of a flat plate processed material is preliminarily formed into a shape having a mounting hole for an auger shaft at the center, and this base plate is processed and formed into a spiral shape one pitch at a time. By fixing the formed spiral blade to the periphery of the auger shaft by welding or the like, a spiral rod of an earth auger device or a feeder rod of a conveying device that feeds and conveys soil and powdery fluid can be obtained.

Conventionally, a blade bending machine and a blade positioning jig have been disclosed in which a workpiece W is set in press working portions P3 and P4 and pressed by a hydraulic actuator 15 in relation to a method for processing a spiral blade material, which is a semi-processed product for an earth auger. (Patent Document 1: JP-A-2011-036884).

In this blade bending machine, when an operator M sets a workpiece W to the press working parts P3 and P4 and turns on a switch (not shown), hydraulic pressure is supplied from the hydraulic pressure supply device 12 to the actuator 15, and the actuator 15 moves the slider. 14 is to be lowered.

As a result, the workpiece W is moved substantially simultaneously between the first fixed blade 24 and the first movable blade 34 of the press working portion P3 and between the second fixed blade 25 and the second movable blade 35 of the press working portion P4. press. When pressing the work W, the inner circumference a of the work W is positioned at the position corresponding to the intersection of the first fixed blade 24 and the second fixed blade 25. At this time, the outer circumference b of the work W is A stopper (not shown) is provided in the vicinity of each of the first fixed holder 22 and the second fixed holder 23 . As a result, when the work W is actually pressed, the outer circumference b of the work W is brought into contact with the two stoppers, and the slider 14 is lowered to move the work W upstream along the rotation direction. The workpiece W is sandwiched substantially simultaneously between the first fixed blade 24 and the first movable blade 34 and between the second fixed blade 25 and the second movable blade 35 on the downstream side for press working. .

In addition, for example, Patent Document 2 (Japanese Patent Application Laid-Open No. 2000-025929) describes a pseudo spiral plate and a method for manufacturing the same, in which a three-dimensional curved surface 2 that matches a part of the three-dimensional curved surface of the spiral plate 1 to be manufactured is provided on the upper surface. and an upper die 5 having a three-dimensional curved surface 4 corresponding to the three-dimensional curved surface 2 of the lower die 3 on its lower surface.

In this press machine, a veneer cut in advance to form a part of the spiral plate 1 is placed at a predetermined position on the lower die 3, and the upper die 5 is lowered by the ram 7 of the press machine. The curved plate 6 is formed by pressing the veneer into a three-dimensional curved surface.

JP 2011-036884 A JP-A-2000-025929

However, since the above-mentioned conventional processing equipment sets and presses the flat plate processing material, which is the original plate, in a horizontal position, the shape and thickness are affected by the difference in processing pressure between the upper press surface on the upper side of the press machine and the lower press surface on the lower side. or pitch distortion due to pressing. In order to prevent this, in some cases, it was necessary to turn over the original plate, which is a heavy item, and set it again for the purpose of forming the pitch curved surface on the opposite side.

In addition, in order to correct the distortion, it is necessary to move the slider and the upper die up and down for each press shot, and to change the area of the press surface on the original sheet, and to repeat the resetting operation.

However, since the base plate is a heavy object made of metal, the repeated work of resetting, including transporting, changing the position, and turning over the base plate, is complicated, and efficiency is lacking. There was a problem that it was not possible to

Further, as the flat plate processed material, which is the original plate, a pre-formed material that has been pre-formed into a predetermined fan shape is used as a pre-stage of the processing operation of the press machine. The predetermined sector shape is a donut shape having a mounting hole for the auger shaft in the center, and a flat plate shape obtained by cutting a part of the central corner portion along the radial direction of the donut shape.

However, due to non-uniformity of the pressing pressure by the pressing machine, non-uniformity of the pressing area, etc., the deviation of the pitch and the deviation of the plate thickness occur. As a result, there is a problem that the formed shape after press working does not match the rod axis, the size is insufficient, or the outer diameter is distorted, even though it is formed into a predetermined sector shape in advance.

Therefore, the present invention provides a bending system that can perform efficient and highly accurate forming by avoiding the complexity of repeated resetting work, including transporting, changing the position, and turning over the original plate. Another object of the present invention is to provide a bending system in which the shape of an original plate preformed into a predetermined sector shape conforms to the dimensions and shape of the product even after press working.

The spiral blade bending system of the present invention has the following features. Numerical strings in parentheses or character strings consisting of numerals and alphabets that follow the structural names below are symbols attached for convenience in order to understand the corresponding structural examples in each drawing shown as an embodiment. There is, and it does not limit a structure or a concept by this.

[1] In the bending system of the spiral blade bending system of the present invention, the bending device includes:
A "holder blade" having a mountain-shaped or trapezoidal blade portion that is inserted into the cut portion of the C-shaped flat plate processed material;
The left and right slanted lower parts of the vertically oriented flat plate processed material with the "holder blade" inserted into the cutting part are held by pressing from the bottom so that the plate surface of the flat plate processed material is vertically oriented. "Grabarod" and
Of the plate surface of the flat plate processed material held vertically by the holder blade and the grabber cylinder, the press area including the arc of the predetermined central angle is sandwiched from the front side and the back side sandwiched from both sides of the flat plate surface, and horizontally A "convex-concave processing blade" consisting of a "concave processing blade" and a "convex processing blade", which are set so as to be capable of pinching and pressing, and
a "receiving surface holder" for fixing either one of the "concave processing blade" and the "convex processing blade" to a predetermined back position of the vertically supported flat plate processed material;
A "press cylinder" that holds the other of the "concave machining blade" and the "convex machining blade" from the front position of the vertically supported flat plate workpiece so that it can be horizontally pressed;
In a processing device comprising
When viewed from a vertical plane in the normal direction of the plate surface of the flat plate processed material set vertically, the shape of the lower edge of the "concave processing blade" and the "convex processing blade" is the concave shape of the grabber rod that holds the flat plate processed material. It consists of an arc shape along the tip surface,
At least one of the “concave processing blade” and the “convex processing blade” slides on the concave tip surface by horizontal pressing by the press cylinder, so that the “concave processing blade” and the “convex processing blade” advance mutually under pressure. Even so, the left and right grabber rods continue to press and hold from the left and right oblique lower part so as to maintain the vertical direction of the plate surface of the flat plate processed material.

[2] In the bending system of the spiral blade bending system, in the bending device,
The blade portion of the holder blade has symmetrical slanted side surfaces, and the left and right slanted side surfaces are fitted and inserted into the cut portion of the C-shaped flat plate processed material to maintain the vertical direction of the plate surface of the flat processed material. hold it vertically,
Even if the "concave processing blade" and the "convex processing blade" are pressed against each other by the horizontal pressing by the press cylinder, the blade part of the holder blade along with the left and right grabber rods will move in the vertical direction of the plate surface of the flat plate processed material. It is characterized in that the symmetrical inclined side surfaces continue to be fitted and inserted into the cut portion of the C-shaped flat plate processed material so as to keep it.

[3] In any one of the bending systems of the spiral blade bending system, the bending device includes:
The holder blade has a mountain-shaped blade part that stands vertically at the center position between the left and right grabber rods. While supporting vertically from the lower center of the
Left and right grabber rods have a three-point fixing structure that clamps and holds the flat plate material with the C-shaped cut part facing downward from the oblique lower part on both sides of the center of the cut part.
It is characterized in that the press area where the plate surface is sandwiched between the "concave machining blade" and the "convex machining blade" is set so as to be rotationally displaceable around the center of the C shape at a predetermined phase.

In addition, in the bending system of the spiral blade bending system equipped with the bending device,
A horizontal press structure consisting of the "concave processing blade", the "convex processing blade", the "receiving surface holder" and the "press cylinder" is arranged around the center of the vertically supported flat plate processing material to form a mountain shape of the blade part. a reference position, and a bending apparatus further comprising a circumferential rotation structure set so as to be rotationally displaceable in a predetermined phase of 180 degrees or less in the left-right direction from the reference position;
It is characterized by comprising a set content of the rotating structure and a control device.

In the above case, the bending system includes a bending device and a control device.

[4] In any one of the spiral blade bending systems described above,
a storage device for storing the amount of pressing by the horizontal pressing structure, the number of times of pressing, the rotation adjustment amount of the phase of the circumferential rotation structure, and the pattern of rotation adjustment;
A program for controlling the bending device so that the program can be executed as a program that repeats the phase rotation adjustment process of the circumferentially rotating structure and the pressing process with a predetermined amount of press and the number of presses by the horizontal press structure according to the contents of the storage device. and a control device.

In the above case, the bending system includes the bending device, a control device, a storage device, and a program control device.

[5] In any one of the spiral blade bending systems described above,
Material information including bending, torsion and tensile strength of flat plate processed material, shape information after processing including center hole diameter after processing, blade material outer diameter, plate thickness and twist pitch, and pressing by the horizontal press structure Inverse simulation of the forming shape of the flat plate processed material before processing is performed based on the amount of press, the number of presses, the amount of rotation adjustment of the phase of the circumferential rotation structure, and the processing information by the pattern of rotation adjustment, and the formed shape of the flat plate processed material before processing It is characterized by further comprising an inverse simulation device that outputs processing instruction data.

In the above case, the bending system includes the bending device, a control device, a storage device, a program control device, and an inverse simulation device.

By taking the above measures, the present invention avoids the complexity of repeated resetting work, including transportation, position change, and turning over of the original plate, and bends that can be performed efficiently and with high accuracy. It was possible to provide a processing system and a bending system in which the formed shape of the base plate preformed into a predetermined fan shape conforms to the dimensions and shape of the product even after press working.

FIG. 2 is a plan layout diagram of the bending system for the spiral blade of Example 1. FIG. The front view (a), the plan view (b), and the side view (c) of the spiral processing blade bending apparatus of Example 1. FIG. FIG. 4 is a conceptual explanatory diagram of predictive forming by the inverse simulation device of the bending system of Example 1; FIG. 4 is a conceptual explanatory view of steel material cutting, bending, and final welding by the inverse simulation device, control device, storage device, and program control device of the bending system of Embodiment 1; FIG. 4 is a conceptual diagram of an example of development to screw products and feeder products by the bending system of Example 1. FIG. Process explanatory drawing of the conventional bending blade|wing.

The present invention will be described in conjunction with the drawings given as examples.

FIG. 1 is a plan view of a bending system for a spiral blade according to a first embodiment; FIG. FIG. 2 is a front view (a), a plan view (b), and a side view (c) of the spiral blade bending apparatus of the first embodiment. 3 is a conceptual explanatory diagram of predictive forming by the inverse simulation device of the bending system of the first embodiment; FIG. FIG. 4 is a conceptual explanatory diagram of steel material cutting, bending, and final welding by the inverse simulation device, control device, storage device, and program control device of the bending system of the first embodiment. FIG. 5 is a conceptual diagram of an example of application to screw products and feeder products by the bending system of Example 1. FIG. FIG. 6 is a process explanatory diagram of a conventional bending blade.

[1] In the bending system of the spiral blade bending system of the present invention, the bending device includes:
A "holder blade" having a mountain-shaped or trapezoidal blade portion that is inserted into the cut portion of the C-shaped flat plate processed material;
The left and right slanted lower parts of the vertically oriented flat plate processed material with the "holder blade" inserted into the cutting part are held by pressing from the bottom so that the plate surface of the flat plate processed material is vertically oriented. "Grabarod" and
Of the plate surface of the flat plate processed material held vertically by the holder blade and the grabber cylinder, the press area including the arc of the predetermined central angle is sandwiched from the front side and the back side sandwiched from both sides of the flat plate surface, and horizontally A "convex-concave processing blade" consisting of a "concave processing blade" and a "convex processing blade", which are set so as to be capable of pinching and pressing, and
a "receiving surface holder" for fixing either one of the "concave processing blade" and the "convex processing blade" to a predetermined back position of the vertically supported flat plate processed material;
A "press cylinder" that holds the other of the "concave machining blade" and the "convex machining blade" from the front position of the vertically supported flat plate workpiece so that it can be horizontally pressed;
In a processing device comprising
When viewed from a vertical plane in the normal direction of the plate surface of the flat plate processed material set vertically, the shape of the lower edge of the "concave processing blade" and the "convex processing blade" is the concave shape of the grabber rod that holds the flat plate processed material. It consists of an arc shape along the tip surface,
At least one of the “concave processing blade” and the “convex processing blade” slides on the concave tip surface by horizontal pressing by the press cylinder, so that the “concave processing blade” and the “convex processing blade” advance mutually under pressure. Even so, the left and right grabber rods continue to press and hold from the left and right oblique lower part so as to maintain the vertical direction of the plate surface of the flat plate processed material.

[2] In the bending system of the spiral blade bending system, in the bending device,
The blade portion of the holder blade has symmetrical slanted side surfaces, and the left and right slanted side surfaces are fitted and inserted into the cut portion of the C-shaped flat plate processed material to maintain the vertical direction of the plate surface of the flat processed material. hold it vertically,
Even if the "concave processing blade" and the "convex processing blade" are pressed against each other by the horizontal pressing by the press cylinder, the blade part of the holder blade along with the left and right grabber rods will move in the vertical direction of the plate surface of the flat plate processed material. It is characterized in that the symmetrical inclined side surfaces continue to be fitted and inserted into the cut portion of the C-shaped flat plate processed material so as to keep it.

[3] In any one of the bending systems of the spiral blade bending system, the bending device includes:
The holder blade has a mountain-shaped blade part that stands vertically at the center position between the left and right grabber rods. While supporting vertically from the lower center of the
Left and right grabber rods have a three-point fixing structure that clamps and holds the flat plate material with the C-shaped cut part facing downward from the oblique lower part on both sides of the center of the cut part.
It is characterized in that the press area where the plate surface is sandwiched between the "concave machining blade" and the "convex machining blade" is set so as to be rotationally displaceable around the center of the C shape at a predetermined phase.

In addition, in the bending system of the spiral blade bending system equipped with the bending device,
A horizontal press structure consisting of the "concave processing blade", the "convex processing blade", the "receiving surface holder" and the "press cylinder" is arranged around the center of the vertically supported flat plate processing material to form a mountain shape of the blade part. a reference position, and a bending apparatus further comprising a circumferential rotation structure set so as to be rotationally displaceable in a predetermined phase of 180 degrees or less in the left-right direction from the reference position;
It is characterized by comprising a set content of the orbital rotation structure and an orbital rotation control device.

In the above case, the bending system includes a bending device and a rotation control device.

[4] In any one of the spiral blade bending systems described above,
a storage device for storing the amount of pressing by the horizontal pressing structure, the number of times of pressing, the rotation adjustment amount of the phase of the circumferential rotation structure, and the pattern of rotation adjustment;
A program for controlling the bending device so that the program can be executed as a program that repeats the phase rotation adjustment process of the circumferentially rotating structure and the pressing process with a predetermined amount of press and the number of presses by the horizontal press structure according to the contents of the storage device. and a control device.

In the above case, the bending system comprises the bending device, a rotation control device, a storage device, and a program control device.

[5] In any one of the spiral blade bending systems described above,
Material information including bending, torsion and tensile strength of flat plate processed material, shape information after processing including center hole diameter after processing, blade material outer diameter, plate thickness and twist pitch, and pressing by the horizontal press structure Inverse simulation of the forming shape of the flat plate processed material before processing is performed based on the amount of press, the number of presses, the amount of rotation adjustment of the phase of the circumferential rotation structure, and the processing information by the pattern of rotation adjustment, and the formed shape of the flat plate processed material before processing It is characterized by further comprising an inverse simulation device that outputs processing instruction data.

The present invention has the following features.
(6) Processing of a flat plate cut into a C-shaped (notched donut) shape by configuring a “holder blade” with a symmetrical mountain-shaped cross section in the device from a continuous plate structure that can be varied in the thickness direction. Even if the cutting part of the material is replenished and the plate is vertically supported on the holder stage, even if the plate is horizontally pressed from both sides with an uneven blade, the blade part will be deformed and pressed. A point that does not interfere with the blade. Moreover, since the plate is placed vertically, the press area in the plate surface direction is not affected by gravity, and press molding can be performed evenly from both sides. note that. Depending on the situation, it is also easy to reset in the opposite direction.

(7) In the machine, during press working, the vertically placed flat plate is pinched and supported from the left and right diagonally lower direction (60 degrees elevation angle) so as not to interfere with the cut edge of the plate by the "grabber rod" at the left and right diagonal lower part. The point to press while.

(8) The press area of the horizontal press of the "concavo-convex processing blade" is rotated at a predetermined phase around the center of the C-shaped processed flat plate material, and the control device that controls this rotates the predetermined circumferential direction. Horizontal pressing is repeated independently for each phase-spaced press area.

(9) In the system, the flat plate processed material cut into a C-shaped (notched donut) shape is placed on the holder stage by the mountain-shaped "holder blade" at the center position between the left and right grabber rods. Vertically supporting the C-shaped (notched donut) part facing vertically downward, and horizontally pressing while vertically supported by uneven processing blades from both sides of the flat plate, to create a mountain-shaped "holder blade". It is possible to perform press evaluation of the plate surface used as a reference.

(10) In the system, a storage device for storing the amount of pressing by the horizontal pressing structure, the number of times of pressing, the rotation adjustment amount of the phase of the circular rotation structure, and the rotation adjustment pattern;
A program for controlling the bending device so that the program can be executed as a program that repeats the phase rotation adjustment process of the circumferentially rotating structure and the pressing process with a predetermined amount of press and the number of presses by the horizontal press structure according to the contents of the storage device. and a controller.

A processing system using this device,
B1. C-shaped flat plate processed material is pre-processed with notches/holes based on "C cut data that traces back from the three-dimensional shape data after molding and replaces it with the flat plate processed shape before pressing", a flat cut program;
B2. A vertical setting program in which the flat plate processed material after the flat plate cutting process is set vertically, and the left and right C-cut left and right ends are held by the left and right "grabber rods" from the left and right oblique lower parts,
B3. Execute a two-point press program in order, in which the vertically placed flat plate processed material set in the vertical setting process is sandwiched from two points on both sides of the flat plate while adjusting the left and right holding amount of the grabber rod. machining system.

B4. A processing system in which the processing equipment, plate processing material storage area, bending processing material storage area, and concave-convex processing blade stocker are arranged on a plane in the processing space as shown below.
A processing device is installed in the center of the processing space, and an uneven processing blade stocker is installed near the installation location,
Either the left or right side of the processing equipment, the tip of which secures the carry-in route for the flat plate processed material, is used as the flat plate processed material storage area,
The left or right side of the processing device, or the other side, where the carry-out route for the bent material is secured, is used as a storage area for the bent material after processing,
When viewed from the center of the processing space, one end common to the flat plate processed material storage area, the processing device, and the bending processed material storage area is used as a loading/unloading port,
As viewed from the center of the processing space, one end opposite to the one end of the loading/unloading port is arranged as a conveying route for flat plate processed materials before processing and bending processed materials after processing.

In the spiral blade bending device of the present invention, the flat plate material is supported at three points from the diagonally lower side in a vertical position, so the space of the processing device is compact. There is an advantage that the bending side of the pitch, that is, the side in the thickness direction can be visually recognized, and press working can be performed while performing more precise confirmation.

The present invention and the configuration of each embodiment, which is an embodiment of the present invention, have been described above. , various changes and modifications, such as layout of each configuration, size change, omission or deletion of a part of the configuration, are possible. In addition, it is possible to add a new configuration, combine with other components, combine and replace partial configurations of each embodiment, and extract or combine some components. In addition to the configuration shown in the embodiment, each configuration may have a different shape, structure, or specification, and the number of each configuration may be changed.

100 Bending device 200 Concavo-convex processing blade stock place 300 Worked material place after bending 400 Flat plate work stock place 5 Opening/closing curtain
P compartment wall
A54 Transport route for flat plate processed materials
A53 Processed material unloading route after processing
A14 Equipment setting route for flat plate processing before processing
A13 Apparatus setting path for flat processed material after processing 12 13 Grabber rod 11 Holder blade
O1 Flat plate processing material 141B Concave processing blade 142B Convex processing blade 14R Press cylinder 14 Circular rotation structure 15 Program control device 16 Storage device 17 Monitor 1L Circular rotation control device 1T Hydraulic tank

Claims (5)

A "holder blade" having a mountain-shaped or trapezoidal blade portion that is inserted into the cut portion of the C-shaped flat plate processed material;
The left and right slanted lower parts of the vertically oriented flat plate processed material with the "holder blade" inserted into the cutting part are held by pressing from the bottom so that the plate surface of the flat plate processed material is vertically oriented. "Grabarod" and
Of the plate surface of the flat plate processed material held vertically by the holder blade and the grabber cylinder, the press area including the arc of the predetermined central angle is sandwiched from the front side and the back side sandwiched from both sides of the flat plate surface, and horizontally A "convex-concave processing blade" consisting of a "concave processing blade" and a "convex processing blade", which are set so as to be capable of pinching and pressing, and
a "receiving surface holder" for fixing either one of the "concave processing blade" and the "convex processing blade" to a predetermined back position of the vertically supported flat plate processed material;
A "press cylinder" that holds the other of the "concave machining blade" and the "convex machining blade" from the front position of the vertically supported flat plate workpiece so that it can be horizontally pressed;
In a processing device comprising
When viewed from a vertical plane in the normal direction of the plate surface of the flat plate processed material set vertically, the shape of the lower edge of the "concave processing blade" and the "convex processing blade" is the concave shape of the grabber rod that holds the flat plate processed material. It consists of an arc shape along the tip surface,
At least one of the “concave processing blade” and the “convex processing blade” slides on the concave tip surface by horizontal pressing by the press cylinder, so that the “concave processing blade” and the “convex processing blade” advance mutually under pressure. Even so, the left and right grabber rods continue to press and hold the flat plate material from the left and right oblique lower parts so as to maintain the vertical direction of the plate surface of the flat plate material. The blade portion of the holder blade has symmetrical inclined side surfaces, and the left and right inclined side surfaces are fitted and inserted into the cut portion of the C-shaped flat plate processed material, so that the plate surface of the flat processed material is aligned in the vertical direction. keep vertical,
Even if the "concave processing blade" and the "convex processing blade" are pressed against each other by the horizontal pressing by the press cylinder, the blade part of the holder blade along with the left and right grabber rods will move in the vertical direction of the plate surface of the flat plate processed material. 2. The spiral blade bending system according to claim 1, wherein the symmetrical slanted side surfaces are continuously fitted and inserted into the cut portion of the C-shaped flat plate material so as to maintain the shape. The holder blade has a vertical mountain-shaped blade part at the center position between the left and right grabber rods, and this blade part cuts the flat plate material with the C-shaped cut part facing downward. While supporting vertically from the lower center of the part,
Left and right grabber rods have a three-point fixing structure that clamps and holds the flat plate material with the C-shaped cut part facing downward from the oblique lower part on both sides of the center of the cut part.
2. The press area in which the plate surface is sandwiched between the "concave processing blade" and the "convex processing blade" is set so as to be rotationally displaceable in a predetermined phase around the center of the C-shape. Bending system for spiral blades. a storage device for storing the amount of pressing by the horizontal pressing structure, the number of times of pressing, the rotation adjustment amount of the phase of the circumferential rotation structure, and the pattern of rotation adjustment;
It further comprises a program control device that automatically repeats the phase rotation adjustment process of the circumferentially rotating structure and the pressing process with a predetermined amount of press and the number of times of pressing by the horizontal press structure according to the stored contents of the storage device. 4. The spiral blade bending system according to claim 3. Material information including bending, torsion and tensile strength of flat plate processed material, shape information after processing including center hole diameter after processing, blade material outer diameter, plate thickness and twist pitch, and pressing by the horizontal press structure Inverse simulation of the forming shape of the flat plate processed material before processing is performed based on the amount of press, the number of presses, the amount of rotation adjustment of the phase of the circumferential rotation structure, and the processing information by the pattern of rotation adjustment, and the formed shape of the flat plate processed material before processing 5. The spiral blade bending system according to claim 4, further comprising an inverse simulation device that outputs processing instruction data.

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