JP2004243367A - Method and device for adjusting roll forming device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and device for adjusting a roll forming device by which a roll interval between a first forming roll and a second forming roll can be measured in common with respective stands and regulated. <P>SOLUTION: A movable adjusting device 6 which is provided movably along the series arrangement direction of stands 2 constituting a stand group 1, measures the roll interval between a first forming roll 4 and a second forming roll 5, and can adjust the roll interval is prepared. A regulating stage where the movable adjusting device 6 is arranged on one stand 2, so that the roll intreval is measured, and further, the rollerval is regulated in accordance with the measured result is performed. Thereafter, the movable regulating device 6 is moved along the series arrangement direction of the stands 2, and is arranged at another stand 2, so that a regulating stage is similarly performed as for the another stand. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for adjusting a roll forming apparatus that performs bending on a plate-shaped work by using a roll, and an adjusting apparatus for the roll forming apparatus.
[0002]
[Prior art]
Patent Literature 1 discloses a stand in which a first forming roll having a first bent forming surface and a second forming roll having a second bent formed surface for performing bending forming on a work are paired, A roll forming technique using a stand group formed side by side in series is disclosed. According to this, when the work sequentially passes through the stands constituting the stand group, the work is subjected to bending in a cross-section in order, and the work is formed into a predetermined cross-sectional shape.
[0003]
Patent Literature 2 uses a stand in which a first forming roll having a first forming surface and a second forming roll having a second forming surface for forming a work are paired, and a stand is used. A molding movable adjusting device that adjusts a roll distance between a first molding roll and a second molding roll by adjusting a pushing amount of a wedge-shaped adjustment piece provided in the apparatus is disclosed.
[0004]
Patent Literature 3 discloses a technique in which a forming movable adjustment device that adjusts a roll interval between a first forming roll and a second forming roll is incorporated in each of the stands.
[0005]
[Patent Document 1] JP-A-2001-162325
[Patent Document 2] JP-A-5-169117
[Patent Document 3] Plastic working technology series 7 "Sheet rolling" P158 Corona
[0006]
[Problems to be solved by the invention]
According to Patent Literature 1, although a technique is disclosed in which a workpiece is subjected to bending in a cross-section in order and the workpiece is formed into a predetermined cross-sectional shape, the roll interval between the first forming roll and the second forming roll is reduced. It does not disclose the adjusting technique.
[0007]
Patent Document 2 discloses a mechanism for adjusting a roll interval between a first forming roll and a second forming roll by adjusting a pushing amount of a wedge-shaped adjustment piece provided on a stand. It does not disclose a mechanism for measuring and adjusting the roll interval common to each stand. Therefore, a movable forming adjustment device is provided for each stand, which is disadvantageous in terms of cost.
[0008]
Patent Document 3 discloses a mechanism in which a mechanism for adjusting the roll interval is incorporated in each of the stands, which is disadvantageous in cost reduction and a mechanism for measuring and adjusting the roll interval in common for each stand. Is not disclosed.
[0009]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and measures a roll interval of a first forming roll and a second forming roll mounted on each stand constituting a stand group in common for each stand. It is an object of the present invention to provide a method for adjusting a roll forming apparatus and an adjusting apparatus for a roll forming apparatus, which can adjust a roll interval if the value is not an appropriate value.
[0010]
[Means for Solving the Problems]
(1) A method for adjusting a roll forming apparatus according to a first aspect of the present invention includes the steps of: forming a first forming roll having a first bent forming surface for bending a work and a second bending formed surface facing the first bent formed surface; A stand group formed by arranging in parallel a stand on which a second forming roll having
A movable type that is provided so as to be movable along the direction in which the stands that constitute the stand group are arranged in series and that can measure the roll interval between the first forming roll and the second forming roll of the stand and adjust the roll interval. Preparing a movable adjustment device;
By moving the movable adjustment device close to or arranged on one of the stands in the group of stands, the roll interval between the first forming roll and the second forming roll of the stand is measured, and the stand is set in accordance with the measurement result. Adjusting the roll interval between the first forming roll and the second forming roll of
Thereafter, the adjusting step is performed on another stand by moving the movable adjusting device in the direction in which the stands are arranged in series and moving the movable adjusting device closer to or arranged on the other stand. It is.
[0011]
According to the method of the present invention, if the movable adjusting device is moved along the direction in which the stands are arranged in series, the roll interval between the first forming roll and the second forming roll of the stand is measured in common for each stand. And can be adjusted.
[0012]
(2) The adjusting device of the roll forming apparatus according to the second invention is configured to include a first forming roll having a first bent forming surface for bending a work and a second bending formed surface facing the first bent formed surface. A stand group formed by arranging in parallel a stand on which a second forming roll having
A movable adjusting device that adjusts a roll interval between the first forming roll and the second forming roll of the stand;
The movable adjustment device
A movable body movable along the direction in which the stands constituting the stand group are arranged in series,
A roll interval measuring unit mounted on the movable body and measuring an interval between the first forming roll and the second forming roll of each stand;
A roll interval adjuster mounted on the movable body and configured to measure a roll interval between the first forming roll and the second forming roll of each stand in accordance with the measurement by the roll interval measuring unit and to adjust the roll interval; And
The movable adjusting device is commonly used for adjusting the roll interval in each of the stands constituting the stand group.
[0013]
According to the apparatus of the present invention, if the movable adjusting device is moved in the direction in which the stands are arranged in series, the roll interval between the first forming roll and the second forming roll of the stand is measured in common for each stand. And can be adjusted.
[0014]
(3) The adjusting device of the roll forming apparatus according to the third invention comprises a first forming roll having a first bent forming surface for bending a work and a second bending formed surface facing the first bent formed surface. A stand group formed by arranging in parallel a stand on which a second forming roll having
A movable adjusting device for measuring a roll interval between the first forming roll and the second forming roll of the stand and adjusting the roll interval;
The movable adjustment device
A movable body movable along the direction in which the stands constituting the stand group are arranged in series,
A roll interval measuring unit mounted on the movable body and measuring an interval between the first forming roll and the second forming roll of each stand;
A roll gap adjusting unit mounted on the movable body and adjusting a roll gap between the first forming roll and the second forming roll of each stand according to the measurement by the roll gap measuring unit;
The movable adjusting device is commonly used for adjusting the roll interval in each of the stands constituting the stand group.
A setting processing unit for setting at least information on a roll interval to obtain a target accuracy of the workpiece in the present molding;
A storage unit for storing past information on at least the relationship between the roll interval and the actual forming accuracy of the work in the past forming;
Searches past information in the storage unit based on the information set in the setting processing unit, and determines the forming accuracy of the work when the roll is formed based on the information set in the setting processing unit based on the past information in the storage unit. A control device for predicting and correcting a roll interval when a difference between the predicted work forming accuracy and the target work accuracy exceeds a predetermined range.
[0015]
According to the apparatus of the present invention, if the movable adjusting device is moved in the direction in which the stands are arranged in series, the roll interval between the first forming roll and the second forming roll of the stand is measured in common for each stand. And can be adjusted. Further, at the time of roll forming, there are factors such as wear on the first bent forming surface of the first forming roll and the second bent formed surface of the second forming roll, and springback due to the elasticity of the work. For this reason, even if the work is roll-formed based on the information set in the setting processing unit, the target accuracy after the work is formed may not always be obtained. Therefore, the control device predicts the forming accuracy of the work when the roll forming is performed based on the information set in the setting processing unit based on the past information in the storage unit. Then, when the difference between the predicted forming accuracy of the work and the target accuracy of the work exceeds a predetermined range, the roll interval is corrected. As described above, if the roll interval is corrected based on the past information stored in the storage unit, the forming accuracy of the work can be further improved.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
According to the method of the present invention and the apparatus of the present invention, a setting processing section for setting at least information on a roll interval to obtain a target accuracy of a workpiece in the current molding, and a setting processing section of at least the roll interval in the past molding and the actual molding accuracy of the workpiece. A storage unit for storing past information related to the relationship, and searching for the past information in the storage unit based on the information set in the setting processing unit, and forming the work when performing roll forming based on the information set in the setting processing unit. A control device for predicting the accuracy based on past information in the storage unit, and for correcting a roll interval when a difference between the predicted work forming accuracy and the target work accuracy exceeds a predetermined range. A form can be adopted.
[0017]
According to the preferred embodiment described above, at least the information on the roll interval for obtaining the target accuracy of the workpiece in the current molding is set in the setting processing unit. The storage unit stores past information on at least the relationship between the roll interval and the forming accuracy of the work in past forming.
[0018]
During roll forming, there are factors such as wear on the first bent forming surface of the first forming roll and the second bent formed surface of the second forming roll, and springback due to the elasticity of the work. For this reason, even if the roll is formed based on the information set in the setting processing unit, the target accuracy of the work may not always be obtained. Therefore, the control device according to the preferred embodiment described above predicts the forming accuracy of the work when the roll is formed based on the information set in the setting processing unit based on the past information in the storage unit. Then, when the difference between the predicted forming accuracy of the work and the target accuracy of the work exceeds a predetermined range, the roll interval is corrected. As described above, if the roll interval is corrected based on the past information stored in the storage unit, the forming accuracy of the work can be further improved. In the above case, before the influence of the disturbance appears, the forming accuracy of the work is predicted, and necessary correction is made to the roll interval so that the forming accuracy is within the target range. is there.
[0019]
As a form for correcting the roll interval, at least one of the following can be exemplified.
{Circle around (1)} When the first forming roll and the second forming roll are used many times, there is a possibility that the first forming roll and the second forming roll are being worn. Therefore, the roll interval is corrected in advance so as to be smaller than the set roll interval.
{Circle over (2)} When the material of the work is hard, the elastic modulus of the work is high, and the repulsive force received by the first forming roll and the second forming roll from the work during roll forming may increase. Therefore, the roll interval is corrected in advance so as to be smaller than the set roll interval.
{Circle around (3)} When the thickness of the work is large, the work is stretched between the first forming roll and the second forming roll in the traveling direction and the bending direction to be in a so-called rolling state, and the precision after forming the work is remarkably high. Since it is deteriorated (unstable), the roll interval is corrected in advance so as to be larger than the set roll interval.
[0020]
According to the method of the present invention and the apparatus of the present invention, preferably, each stand can be exemplified by a form having a rotating operation unit that is rotated and an adjusting unit that adjusts a roll interval by rotation of the rotating operation unit. The roll gap adjusting unit of the movable adjusting device can be exemplified by a form having a connecting unit connected to the rotating operation unit of each stand in a detachable function and a rotation drive source for rotating the connecting unit. When the rotation drive source is rotationally driven in a state where the connection portion is joined to the rotation operation portion of the stand, the adjusting portion adjusts the roll interval between the first forming roll and the second forming roll. The rotation drive source may be any as long as it can rotate the connection portion, and examples thereof include a motor.
[0021]
According to the method and the apparatus of the present invention, preferably, one shaft end of the first forming roll and the second forming roll is connected to the other first forming roll of the first forming roll and the second forming roll. Can protrude along the axial direction from the shaft end of the shaft. In this case, the roll interval measuring unit includes the first sensor abutting on one shaft end side of the first forming roll and the second forming roll, and the other of the first forming roll and the second forming roll. A mode including a second sensor abutting on the shaft end side can be exemplified. The first sensor and the second sensor can be exemplified by a distance sensor such as a linear potentiometer.
[0022]
According to the method of the present invention and the apparatus of the present invention, preferably, the movable body includes a vertical column portion arranged side by side in a front view and a horizontal column portion provided above the stand to connect the vertical columns. A form having a gate shape can be exemplified. In this case, a form in which the roll gap adjusting section is held by the horizontal pillar section of the movable body and the roll gap measuring section is held by the vertical pillar section of the movable body can be exemplified.
[0023]
【Example】
(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a stand 2. FIG. 2 shows a stand group 1 in which stands 2 are formed in parallel on the upper surface of a bed 3 along the direction of arrow X. The stand group 1 is also called a cassette type stand and can be transported together with a bed 3 as a base, and is detachably mounted together with the bed 3 on a work forming line. When the work is changed, the stand group 1 can be replaced together with the bed 3.
[0024]
The stand 2 constituting the stand group 1 can be easily fixed to the upper surface of the bed 3 with bolts or the like. As shown in FIG. 1, the stand 2 has two frame portions 20R and 20L which are erected at predetermined intervals on the left and right sides, and a second bearing portion having a bearing function held relatively upward in the frame portions 20R and 20L. One bearing box 21R, 21L, second bearing box 22R, 22L having a bearing function held relatively lower in frame portions 20R, 20L, and shaft center fitted to first bearing box 21R, 21L. A first forming roll 4 of a horizontal axis supported rotatably around P1 and a second forming of a horizontal axis supported by the second bearing boxes 22R and 22L and rotatably supported around the axis P2. And a roll 5.
[0025]
As shown in FIG. 1, the first forming roll 4 is made of metal or ceramic, and has a large-diameter first forming roll 41 having a ring-shaped first bending surface 40 and a first forming roll 41. A first shaft portion 42 having a small diameter provided coaxially with the first forming roll portion 41 and protruding in the axial direction of the first forming roll portion 41. The first shaft portion 42 is held by the first bearing boxes 21R and 21L of the stand 2 so as to be rotatable around the axis P1.
[0026]
As shown in FIG. 1, the second forming roll 5 is made of metal or ceramics, and has a large-diameter second forming roll portion 51 having a second bent forming surface 50 facing the first bent formed surface 40, and a second forming roll portion 51. A second shaft portion 52 having a small diameter provided coaxially with the second forming roll portion 51 and protruding in the axial direction of the second forming roll portion 51. As shown in FIG. 1, the second shaft portion 52 is held by the second bearing boxes 22R and 22L of the stand 2 so as to be rotatable around the axis P2. The first bending surface 40 and the second bending surface 50 form a bending space 40x for bending. As shown in FIG. 2, a plurality of stands 2 (five in the example shown in FIG. 2) are arranged in series on a bed 3 along a transfer direction (arrow X direction) of a work, so that a cassette type stand is provided. A stand group 1, also referred to as, is formed.
[0027]
As shown in FIG. 3, the shaft end 5r of the lower second forming roll 5 which is one of the first forming roll 4 and the second forming roll 5 is connected to the shaft of the upper first forming roll 4 which is the other. It protrudes laterally from the end 4r along the axial length direction (the direction of the arrow M1).
[0028]
Further, as shown in FIG. 3, an auxiliary bearing box 90 is attached to the first shaft portion 42 of the first forming roll 4. An auxiliary bearing box 91 is attached to the second shaft portion 52 of the second forming roll 5. The auxiliary bearing box 90 rotatably supports the first shaft portion 42 of the first forming roll 4. The auxiliary bearing box 91 rotatably supports the second shaft portion 52 of the second forming roll 54. A biasing element 94 having a biasing spring is interposed between the auxiliary bearing boxes 91 and 92. The urging element 94 urges the first shaft portion 42 of the first forming roll 4 and the second shaft portion 52 of the second forming roll 5 in a direction to separate them from each other (the direction of arrow Q1). Thereby, the first forming roll 4 and the second forming roll 5 can be straightened, and the forming accuracy of the work can be increased.
[0029]
As shown in FIGS. 1 and 2, a movable adjustment device 6 is provided. The movable adjusting device 6 measures and adjusts a roll interval between the first forming roll 4 and the second forming roll 5 of the stand 2. The movable adjusting device 6 includes a movable frame 60 as a movable body that is movable in a direction in which the stands 2 constituting the stand group 1 are arranged side by side (arrow X direction), and a first forming roll of each stand 2 mounted on the movable frame 60. A roll interval measuring unit 61 for measuring an interval between the second forming roll 4 and the second forming roll 5, and a first forming roll 4 and a second forming roll 2 of each stand 2 mounted on the movable frame 60 according to the measurement by the roll interval measuring unit 61. A roll gap adjusting unit 65 for adjusting a roll gap between the forming roll 5 and the molding roll 5.
[0030]
As shown in FIG. 1, the movable frame 60 has a gate shape when viewed from the front, and a stand is provided so as to connect two uprights 60a arranged side by side with an interval and an upper end of each uprights 60a. 2 and a horizontal column portion 60c erected above it. A linear sliding mechanism 68, also called an LM guide, is fixed to the bottom of the movable frame 60.
[0031]
As shown in FIG. 1, a slider 70 is held on the movable frame 60 via a connecting portion 60w. The slider 70 meshes with a ball screw shaft 71 that extends in the direction in which the stands 2 are arranged in series (in the direction of the arrow X) so as to advance and retreat. The ball screw shaft 71 is rotated by the traveling motor 72. The traveling motor 72 can function as a drive source for moving the movable adjustment device 6 in the direction in which the stands 2 are arranged in series (arrow X direction). When the ball screw shaft 71 is driven to rotate around its axis Q3 by the traveling motor 72, the slider 70 moves along the length direction of the ball screw shaft 71. At this time, since the linear motion sliding mechanism 68 slides along the guide rail 74 as a guide portion fixed to the floor, the movable adjustment device 6 moves along the direction in which the stands 2 are arranged in series (arrow X direction). It can move smoothly.
[0032]
As shown in FIG. 1, the roll interval measuring unit 61 is formed by two first sensors 62R and 62L and two second sensors 63R and 63L held on a vertical column 60a of a movable frame 60. I have. As shown in FIG. 3, the first sensor 62 </ b> R includes a first sensor main body 62 a held by the movable frame 60, and a rod-shaped first sensor 62 </ b> A which is mounted on the first sensor main body 62 a and is capable of moving up and down in the arrow Y direction. And one detector 62c. As shown in FIG. 3, the lower end of the first detector 62 c can be brought into contact with the upper surface on the shaft end 4 r side of the first forming roll 4, which is one of the first forming roll 4 and the second forming roll 5. Have been. The same applies to the first sensor 62L.
[0033]
As shown in FIG. 3, the second sensor 63 </ b> R is provided with the second sensor main body 63 a held by the upright column 60 a of the movable frame 60, and is mounted on the second sensor main body 63 a downward and can move up and down in the arrow Y direction. And a rod-shaped second detector 63c. The lower end of the second detector 63c can contact the upper surface of the second forming roll 5, which is the other of the first forming roll 4 and the second forming roll 5, on the side of the shaft end 5r. The second sensor 63L has a similar structure and operation.
[0034]
As shown in FIG. 3, the shaft end 5 r of the lower second forming roll 5 projects laterally outward from the shaft end 4 r of the upper first forming roll 4. For this reason, even if the first forming roll 4 and the second forming roll 5 are arranged in the same phase in the direction in which the stands 2 are arranged in series (arrow X direction), the second detector 63c of the second sensors 63R and 63L. And the shaft end 4r of the first forming roll 4 is avoided. Therefore, as shown in FIG. 3, the lower ends of the second detectors 63c of the second sensors 63R and 63L can satisfactorily contact the upper surface of the second forming roll 5 on the shaft end 5r side.
[0035]
As shown in FIG. 3, each stand 2 has a rotation operation unit 80R that is rotated and an adjustment unit 82R that can adjust the roll interval by rotating the rotation operation unit 80R. The rotation operation section 80R is formed of a nut member rotatably held on the stand 2 around the axis S1. The adjusting portion 82R is formed of a male screw member connected to the upper portion of the first bearing box 21 and screwably engaged with a female screw portion of a nut member. In FIG. 3, when the rotation operation unit 80R is rotated about its axis S1, the adjustment unit 82R, which is a male screw member, moves up and down (arrow Y direction), and the first bearing box 21R moves up and down (arrow direction). (Y direction).
[0036]
Each stand 2 has a rotation operation unit 80L that is rotated and an adjustment unit 82L that adjusts a roll interval by rotation of the rotation operation unit 80L. The rotation operation unit 80L and the adjustment unit 82L have the same structure and operation.
[0037]
As shown in FIG. 1, the roll gap adjusting section 65 of the movable adjusting device 6 is held by a horizontal column 60 c of the movable frame 60. The roll interval adjusting unit 65 is used to rotate the socket-like connecting portions 66R, 66L connected to the rotary operating portions 80R, 80L of each stand 2 in a detachable function and the connecting portions 66R, 66L around the axes S1, S2. And adjustment motors 68R and 68L as rotary driving sources. The adjustment motors 68R and 68L are held by the movable frame 60 as shown in FIG.
[0038]
As shown in FIG. 3, when the adjusting motor 68R is driven to rotate while the socket-shaped connecting portion 66R is joined to the rotating operation portion 80R of the stand 2, the connecting portion 66R and the rotating operation portion 80R rotate around the axis S1. Then, the first bearing box 21R is moved up and down along the vertical direction (the direction of the arrow Y). A similar effect can be obtained for the socket-like connecting portion 66L. As a result, the first forming roll 4 is moved up and down along the vertical direction (the direction of the arrow Y), and the roll interval between the first forming roll 4 and the first forming roll 4 is adjusted.
[0039]
As shown in FIG. 3, the movable frame 60 holds two rotation motors 84 and 85. The upper rotation motor 84 can be detachably connected to the shaft end 4 r of the first forming roll 4. The lower rotation motor 85 can be detachably connected to the shaft end 5r of the second forming roll 5. When the upper rotation motor 84 is driven to rotate, the first forming roll 4 rotates around its axis P1. When the lower rotation motor 85 is driven to rotate, the second forming roll 5 rotates around its axis P2.
[0040]
Further, as shown in FIG. 5, block-shaped first reference portions 86R and 86L and second reference portions 87R and 87L are provided at positions away from the stand group 1.
[0041]
First, at the time of use, as shown in FIG. 5, the movable adjustment device 6 is moved closer to or disposed on the first reference portions 86R and 86L and the second reference portions 87R and 87L by driving the traveling motor 72. In this state, as shown in FIG. 5, the first detector 62c of the first sensor 62R is lowered in the direction of arrow Y1 to abut on the upper surface of the first reference portion 86R. Further, the first detector 62c of the first sensor 62L is lowered in the direction of the arrow Y1 to make contact with the upper surface of the first reference portion 86L. Similarly, as shown in FIG. 5, the second detector 63c of the second sensor 63R is lowered in the direction of the arrow Y1 to abut on the upper surface of the second reference portion 87R. Further, the second detector 63c of the second sensor 63L is lowered in the direction of the arrow Y1 to make contact with the upper surface of the second reference portion 87L. Thereby, zero point adjustment is performed for the first sensors 62R and 62L and the second sensors 63R and 63L. After the zero point adjustment is completed, the detectors 62c and 63c are raised in the direction of arrow Y2 and retracted.
[0042]
Thereafter, by driving the traveling motor 72, the movable adjustment device 6 is moved closer to or arranged on one of the stands 2 in the stand group 1 as shown in FIG. In this state, the horizontal column portion 60c of the movable frame 60 of the movable adjustment device 6 is disposed above the stand 2. In this state, a measuring operation for measuring the interval between the first forming roll 4 and the second forming roll 5 of the stand 2 is performed.
[0043]
That is, according to the measurement operation, as shown in FIG. 1, the first detector 62c of the first sensor 62R is lowered in the direction of the arrow Y1 to abut on the upper surface of one shaft end 4r of the first forming roll 4. Let it. Further, the first detector 62c of the first sensor 62L is lowered in the direction of the arrow Y1 to make contact with the upper surface of the other shaft end 4r of the first forming roll 4.
[0044]
Similarly, as shown in FIG. 1, the second detector 63c of the second sensor 63R is lowered in the direction of the arrow Y1 to contact the upper surface of one shaft end 5r of the second forming roll 5. Further, the second detector 63c of the second sensor 63L is lowered in the direction of the arrow Y1 to make contact with the upper surface of the other shaft end 5r of the second forming roll 5.
[0045]
Here, the height position of the right shaft end 4r of the first forming roll 4 is measured by the first sensor 62R. The height position of the right shaft end 5r of the second forming roll 5 is measured by the second sensor 63R. The height position of the left shaft end 4r of the first forming roll 4 is measured by the first sensor 62L. The height position of the left shaft end 5r of the second forming roll 5 is measured by the second sensor 63L.
[0046]
At this time, the upper forming motor 4 is rotated appropriately to rotate the first forming roll 4 around its axis P1, and the lower forming motor 85 is rotated appropriately to rotate the second forming roll 5 Rotate around the axis P2. As a result, the right-side roll interval between the first forming roll 4 and the second forming roll 5 of the stand 2 is measured in the circumferential direction by the first sensor 62R and the second sensor 63R. Similarly, the first sensor 62L and the second sensor 63L measure the left-side roll interval between the first forming roll 4 and the second forming roll 5 of the stand 2 in the circumferential direction.
[0047]
Thereafter, as shown in FIG. 1, the socket-shaped connecting portion 66R is detachably joined to the rotary operating portion 80R of the stand 2, and the socket-shaped connecting portion 66L is detachably connected to the rotary operating portion 80L of the stand 2. In the joined state, the adjustment motor 68R is driven to rotate according to the measurement result in the above-described measurement operation. Then, the connection part 66R and the rotation operation part 80R rotate around the axis S1, and the first bearing box 21R is moved up and down along the vertical direction (the direction of the arrow Y). When the adjustment motor 68L is driven to rotate, the connection portion 66L and the rotation operation portion 80L rotate about the axis S2, and the first bearing box 21L is moved up and down in the vertical direction (the direction of the arrow Y).
[0048]
As a result, the first forming roll 4 is moved up and down along the vertical direction (the direction of the arrow Y). As a result, the roll interval between the first forming roll 4 and the second forming roll 5 is adjusted. Thereby, an adjustment step of adjusting the roll interval between the first forming roll 4 and the second forming roll 5 of the stand 2 is performed.
[0049]
Next, the first detector 62c of the first sensor 62R, 62L is raised to be retracted from the shaft end 4r of the first forming roll 4, and the second detector 63c of the second sensor 63R, 63L is raised. 2 Withdraw from the shaft end 5r of the forming roll 5. Further, the socket-shaped connection portions 66R, 66L are detached from the rotation operation portions 80R, 80L of the stand 2. In this state, by further driving the traveling motor 72, the movable adjusting device 6 is moved along the direction in which the stands 2 are arranged in series (arrow X direction), and the movable adjusting device 6 is moved closer to or placed on another stand 2. Let it.
[0050]
Then, for the other stand 2, a measuring operation for measuring the distance between the first forming roll 4 and the second forming roll 5 is performed in the same manner as described above. Thereby, the roll interval between the first forming roll 4 and the second forming roll 5 of the stand 2 is measured. After that, when the adjusting motors 68R, 68L are driven to rotate in accordance with the measurement result in the above-described measuring operation in a state where the socket-like connecting portions 66R, 66L are joined to the rotating operation portions 80R, 80L of the other stand 2, respectively. , The connecting portions 66R, 66L and the rotary operation portions 80R, 80L rotate around the axis, and the first bearing boxes 21R, 21L are moved up and down along the vertical direction (the direction of the arrow Y). As a result, the first forming roll 4 is moved up and down along the vertical direction (the direction of the arrow Y), and the roll interval between the first forming roll 4 and the second forming roll 5 is adjusted. Thereby, an adjustment step of adjusting the roll interval between the first forming roll 4 and the second forming roll 5 of the stand 2 is performed.
[0051]
Next, as described above, the first detector 62c of the first sensors 62R and 62L is lifted and retracted from the shaft end 4r of the first forming roll 4, and the second detector 63c of the second sensors 63R and 63L is moved. Is raised and retracted from the shaft end 5r of the second forming roll 5. Further, the socket-shaped connection portions 66R, 66L are detached from the rotation operation portions 80R, 80L of the stand 2. In this state, by further driving the traveling motor 72, the movable adjusting device 6 is moved along the direction in which the stands 2 are arranged in series (arrow X direction), and the movable adjusting device 6 is moved closer to or placed on another stand 2. Let it.
[0052]
Thereafter, in the same manner as described above, an adjusting step of adjusting the roll interval between the first forming roll 4 and the second forming roll 5 of the other stand 2 is performed.
[0053]
As described above, according to the present embodiment, since the movable adjustment device 6 is provided separately and independently from the stand group 1, the movable adjustment device 6 is arranged in the direction in which the stands 2 are arranged in series (the direction of the arrow X). If it is moved, the roll interval between the first forming roll 4 and the second forming roll 5 of each stand 2 is measured, and if the roll interval is not appropriate, the roll interval can be adjusted.
[0054]
Note that the above-described adjustment step of adjusting the roll interval is performed in the setup section 200 separated from the forming line 210 as shown in FIG. After adjusting the roll interval as described above, the stand group 1 is transferred from the setup section 200 to the forming line 210 as shown in FIG. 4, and the work is roll-formed.
[0055]
FIG. 6 shows an example of a process in which the work W is bent and formed by the first forming roll 4 and the second forming roll 5 mounted on the stand group 1. As the work W passes through the forming space formed by the first forming roll 4 and the second forming roll 5 of each stand 2, the work W is gradually bent in the directions of arrows K1 and K2 as shown in FIG. It has a cross-sectional shape. As the material of the work W, metal (carbon steel, stainless steel, aluminum alloy, copper alloy, titanium alloy, magnesium alloy, etc.) can be adopted. FIG. 7 is a cross-sectional view showing an example of a state in which an elastic body W3 made of rubber or soft resin is attached to the formed work. The elastic body W3 has lips W4 to W7.
[0056]
As described above, according to the present embodiment, the movable adjustment device 6 includes the first sensors 62R and 62L and the second sensors 63R and 63L, and further includes the adjustment motors 68R and 68L, resulting in high cost. easy. According to the present embodiment, the movable adjustment device 6 is used commonly for the measurement operation and the adjustment operation of the roll interval in each stand 2 constituting the stand group 1. For this reason, although the number of the stands 2 constituting the stand group 1 is plural, the movable adjustment device 6 can be reduced to a necessary minimum (for example, one), which can contribute to cost reduction. .
[0057]
When there are a large number of works, as shown in FIG. 8, the number of the stand groups 1 also increases in accordance with the number of the works, and the number of the stand groups 1 (1A, 1B, 1C, 1D...) Corresponding to the works is increased. Needed. When the number of the stand groups 1 (1A, 1B, 1C, 1D...) Increases in this way, the number of the stands 2 constituting the stand group 1 inevitably increases. Since each of them can be used in common, the required number of movable adjustment devices 6 (for example, one) can be reduced, which can contribute to cost reduction.
[0058]
(Second embodiment)
9 to 11 show a second embodiment. The second embodiment has basically the same configuration as the first embodiment, and basically has the same operation and effect. 1 to 8 can be applied mutatis mutandis to the second embodiment.
[0059]
The control device 100 according to the present embodiment includes an input processing unit 102, a control operation unit 103 including a CPU, a storage unit 104, and an output processing unit 105. The storage unit 104 may be an internal storage device or an external storage device. In a predetermined area of the storage unit 104, a large number of past information relating to the type of work (work part number, work material, work plate thickness, etc.), roll interval, and work forming accuracy in the past forming are stored in a database. Stored.
[0060]
FIG. 10 shows an example of a database stored in the storage unit 104. According to this database, as shown in FIG. 10, the product number of the work, the material of the work, the thickness of the work before roll forming, the number of times of forming the first forming roll 4 and the second forming roll 5, and the setting before the roll forming. .., And the relationship between the actual roll accuracy (L10, L11...).
[0061]
The information shown in FIG. 9 includes at least information on the work to be formed this time (work part number, work material, work plate thickness), the number of times of forming the first forming roll 4 and the second forming roll 5, the roll interval, and the like. Set in the processing unit 101. The signal A1 of the setting processing unit 101 is input to the control calculation unit 103 via the input processing unit 102. The measurement signals B1 and B2 of the first sensors 62R and 62L and the measurement signals C1 and C2 of the second sensors 63R and 63L are input to the control calculation unit 103 via the input processing unit 102 of the control device 100, respectively. The control device 100 outputs a command for controlling the adjustment motors 68R and 68L, the traveling motor 72, and the rotation motors 84 and 85 via the output processing unit 105.
[0062]
In the adjustment process described above, the control calculation unit 103 searches the database (past information) of the storage unit 104 based on the information set in the setting processing unit 101. Then, based on the information set in the setting processing unit 101, the actual forming accuracy of the work when the roll forming is performed is predicted based on the database. When the difference between the predicted accuracy of forming the workpiece and the target accuracy of the workpiece exceeds a predetermined range, the control operation unit 103 outputs a correction command for correcting the roll interval via the output processing unit 105 to the adjustment motor. 68R and 68L. As a result, the adjusting motors 68R and 68L are rotated, and the gap between the first forming roll 4 and the second forming roll 5 of the stand 2 is adjusted. When the roll interval adjustment is completed, the control calculation unit 102 outputs a command to the traveling motor 72 via the output processing unit 104 to move the movable adjustment device 6 and dispose it on the next stand 2.
[0063]
FIG. 11 shows an example of a flowchart executed by the control calculation unit 103 of the control device 100. First, as described above, the zero point adjustment is performed for the first sensors 62R and 62L and the second sensors 63R and 63L (step S2). Next, the movable frame 60 is arranged on the predetermined stand 2 by driving the traveling motor 72. When the movable frame 60 is placed on the predetermined stand 2, the movable frame 60 is stopped (Steps S4, S6, and S8).
[0064]
As described above, in the setting processing unit 101, information on the type of the work to be formed this time (work part number, work material, work plate thickness, etc.) is set, and the roll corresponding to the target accuracy of the work is set. Information about the interval is set. Then, information such as the roll interval set in the setting processing unit 101 is read (step S10). Next, a database stored in the storage unit 104 is searched based on the read information. Then, the actual forming accuracy of the work when the roll is formed under the conditions such as the set roll interval is obtained from the database, and this is set as a predicted value β1 relating to the forming accuracy of the work (step S12).
[0065]
Next, the control calculation unit 103 compares the predicted value β1 of the forming accuracy of the work with the target accuracy β of the work (Step S14). When the difference between the two is within the predetermined range, the roll interval between the first forming roll 4 and the second forming roll 5 is adjusted based on the roll interval set in the setting processing unit 101 (step S16). If the difference between them exceeds a certain range, a correction value Δβ for correcting the roll interval is obtained (step S18). Then, the roll interval between the first forming roll 4 and the second forming roll 5 is adjusted based on the roll interval taking into account the correction value Δβ (Step S16).
[0066]
Further, it is determined whether the roll interval adjustment has been performed for all the stands 2 constituting the stand group 1 (step S20). If the roll interval adjustment has been performed for all the stands 2, the process ends. If there is a stand 2 for which the roll interval adjustment has not yet been performed, the process returns to step S4.
[0067]
By the way, in the roll forming, the abrasion on the first bent forming surface 40 of the first forming roll 4 and the second bent formed surface 50 of the second forming roll 5 progresses. In addition, the thickness variation of the work before forming exists within the tolerance range. Because of these disturbance factors, even if the work is roll-formed based on the conditions such as the roll interval set in the setting processing unit 101, if the target accuracy of the work is high, the target accuracy of the work is high. May not always be obtained. In this regard, according to the present embodiment, as described above, the predicted value β1 relating to the molding accuracy of the workpiece is obtained based on a large number of data accumulated in the past, and the predicted value β1 is not less than the predetermined range from the target accuracy. If they are apart, correction is made for the set roll interval. Therefore, before the influence of a disturbance such as abrasion appears on the forming accuracy of the work, the necessary correction operation is performed in advance by feedforward control. Therefore, regardless of the occurrence of disturbance such as wear, it is advantageous to obtain the target accuracy of the work.
[0068]
For example, when the number of times of forming the first forming roll 4 and the second forming roll 5 is large, in the roll forming, the abrasion on the first bent forming surface 40 of the first forming roll 4 and the second bent forming surface 50 of the second forming roll 5 is performed. In consideration of the above, the actual roll interval tends to be larger than the set roll interval. For this reason, the corrected roll interval is relatively smaller than the set roll interval.
[0069]
(Other)
In addition, the method of the present invention and the device of the present invention are not limited to the above-described embodiment, but can be carried out with appropriate modifications without departing from the gist. Even if the phrases described in the embodiments and examples of the invention are only a part, they can be described in the claims.
[0070]
【The invention's effect】
As described above, according to the first to third aspects of the present invention, it is possible to provide a method of adjusting a roll forming apparatus and an adjusting apparatus of a roll forming apparatus capable of measuring and adjusting a roll interval common to each stand. .
[0071]
Further, according to the third aspect, the control device predicts the forming accuracy of the work when the roll forming is performed based on the information set in the setting processing unit, based on the past information in the storage unit. Then, when the difference between the predicted forming accuracy of the work and the target accuracy of the work exceeds a predetermined range, the roll interval is corrected. As described above, if the roll interval is corrected based on the past information stored in the storage unit, the forming accuracy of the work can be further improved.
[Brief description of the drawings]
FIG. 1 is a front view schematically showing a state in which a distance between rolls of a first forming roll and a second forming roll of a stand is measured by a first sensor and a second sensor of a movable adjustment device.
FIG. 2 is a side view schematically showing a stand group.
FIG. 3 is a partial front view schematically showing a state in which a first sensor and a second sensor are measuring a roll interval.
FIG. 4 is a schematic plan view schematically showing an arrangement relationship between a molding line and a setup section.
FIG. 5 is a front view showing a state in which zero point adjustment is performed on a first sensor and a second sensor of the movable adjustment device.
FIG. 6 is a diagram schematically showing a process of bending a work.
FIG. 7 is a cross-sectional view schematically showing a state in which an elastic body is attached to a formed work.
FIG. 8 is a side view schematically showing a large number of stand groups.
FIG. 9 is a block diagram.
FIG. 10 is a diagram showing the contents of a database.
FIG. 11 is a flowchart executed by the control device.
[Explanation of symbols]
In the figure, 1 is a stand group, 2 is a stand, 4 is a first forming roll, 40 is a first bending forming surface, 5 is a second forming roll, 50 is a second bending forming surface, 6 is a movable adjustment device, and 60 is a movable adjusting device. Movable frame (movable body), 61 is a roll interval measuring unit, 62R and 62L are first sensors, 63R and 63L are second sensors, 65 is a roll interval adjusting unit, 66R and 66L are connection units, and 68R and 68L are adjustment motors. (Rotary drive source), 72 is a traveling motor, 100 is a control device, 101 is a setting processing unit, 103 is a control operation unit, and 104 is a storage unit.

Claims (5)

Stands in which a first forming roll having a first bending forming surface for performing bending forming on a workpiece and a second forming roll having a second bending forming surface facing the first bending forming surface are assembled in series. A group of stands formed by
The stand that constitutes the stand group is provided so as to be movable in the direction in which the stands are arranged in series, and measures a roll interval between the first forming roll and the second forming roll of the stand and reduces the roll interval. Providing an adjustable movable movable adjustment device;
By moving the movable adjustment device close to or arranged on one of the stands in the group of stands, a roll interval between the first forming roll and the second forming roll of the stand is measured, and the measurement is performed. Performing an adjusting step of adjusting a roll interval between the first forming roll and the second forming roll of the stand according to the result;
Then, the movable adjustment device is moved along the direction in which the stands are arranged in series, and the movable adjustment device is moved closer to or arranged on another stand, whereby the adjustment step is performed on the other stand. Method for adjusting the roll forming apparatus. Stands in which a first forming roll having a first bending forming surface for performing bending forming on a workpiece and a second forming roll having a second bending forming surface facing the first bending forming surface are assembled in series. A group of stands formed by
A movable adjusting device for measuring a roll interval between the first forming roll and the second forming roll of the stand and adjusting the roll interval,
The movable adjustment device includes:
A movable body movable along a direction in which the stands forming the stand group are arranged in series;
A roll interval measuring unit mounted on the movable body and measuring an interval between the first forming roll and the second forming roll of each of the stands;
A roll gap adjusting unit mounted on the movable body and adjusting a roll gap between the first forming roll and the second forming roll of each of the stands in accordance with the measurement by the roll gap measuring unit. ,
The adjusting device for a roll forming device, wherein the movable adjusting device is commonly used for adjusting a roll interval in each of the stands constituting the stand group. Stands in which a first forming roll having a first bending forming surface for performing bending forming on a workpiece and a second forming roll having a second bending forming surface facing the first bending forming surface are assembled in series. A group of stands formed by
A movable adjusting device for measuring a roll interval between the first forming roll and the second forming roll of the stand and adjusting the roll interval,
The movable adjustment device includes:
A movable body movable along a direction in which the stands forming the stand group are arranged in series;
A roll interval measuring unit mounted on the movable body and measuring an interval between the first forming roll and the second forming roll of each of the stands;
A roll gap adjusting unit mounted on the movable body and adjusting a roll gap between the first forming roll and the second forming roll of each of the stands in accordance with the measurement by the roll gap measuring unit. ,
The movable adjusting device is commonly used for adjusting a roll interval in each of the stands constituting the stand group, and further,
A setting processing unit for setting at least information on a roll interval to obtain a target accuracy of the workpiece in the present molding;
A storage unit for storing past information on at least the relationship between the roll interval and the actual forming accuracy of the work in the past forming;
The past information in the storage unit is searched based on the information set in the setting processing unit, and the forming accuracy of the work when the roll is formed based on the information set in the setting processing unit is determined by the past of the storage unit. Roll forming means for predicting based on the information and correcting the roll interval when a difference between the predicted work forming accuracy and the target work accuracy exceeds a predetermined range. Equipment adjustment device. Claim 2 or Claim 3, wherein each of the stands has a rotary operation unit that is rotated and an adjustment unit that adjusts a roll interval by rotation of the rotary operation unit.
The roll forming apparatus according to claim 1, wherein the roll gap adjusting unit of the movable adjusting device includes a connection unit connected to the rotation operation unit of each stand in a detachable function, and a rotation drive source for rotating the connection unit. Equipment adjustment device. The shaft end of one of the first forming roll and the second forming roll according to any one of claims 2 to 4, wherein the shaft end of the first forming roll and the second forming roll is one of the first forming roll and the second forming roll. It protrudes in the axial direction from the other shaft end,
The roll interval measuring unit includes a first sensor abutting on one shaft end side of the first forming roll and the second forming roll, and a first sensor of the first forming roll and the second forming roll. An adjustment device for a roll forming device, comprising: a second sensor contacting the other shaft end side.

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