JP5458606B2 - Roll caliber position detection device and roll caliber position detection method - Google Patents

Description

  The present invention relates to a roll caliber position detection device and a roll caliber position detection method capable of accurately detecting the relative positional relationship of each caliber part of a roll caliber that is a rolling space formed by combining a plurality of caliber rolls. is there.

  Conventionally, a rolling space formed by combining a plurality of, particularly 3 to 4 or more grooved rolls (caliber rolls) is called a roll caliber, and various cross sections are obtained by passing a material to be rolled through the caliber roll and applying a reduction. A rolled material having a shape is manufactured. In order to increase the accuracy of the cross-sectional shape of the rolled material, it is important to cut or process each caliber roll with high accuracy and adjust the spatial arrangement of each caliber roll.

  As an adjustment method of the roll caliber, each adjuster adjusts the fitting state and the gap between the roll caliber and the reference rod by visually observing the fitting state and the gap between the roll caliber and the reference caliber processed to a predetermined outer diameter with high accuracy. The method of correcting the caliber roll arrangement, or using a projector to project the roll caliber onto the screen, the adjuster compares the projected roll caliber shape with the reference shape and corrects the arrangement of each caliber roll. There is a way to do it. However, any of the adjustment methods is a kind of sensory test depending on the visual observation of the adjuster, and there are problems in terms of reproducibility and objectivity, and there is a problem that time and labor for adjustment are large.

  In order to solve such a problem, in Patent Document 1, an image of a roll caliber edge is imaged using a rotating camera, an edge end position is detected by binarization processing, and the detected edge end position is detected. Based on the above, the shape and position of the roll caliber are precisely measured.

  Further, in Patent Document 2, a camera device that projects parallel light beams toward a roll caliber, enlarges a light pattern shielded by the roll caliber with a lens device, and projects the pattern onto a screen. Using the camera moving device that moves along the roll caliber, the contour shape of the entire roll caliber is acquired, and the adjustment amount of each caliber roll is calculated from the acquired contour data of the roll caliber. What corrects a roll caliber shape is described.

  However, in both Patent Documents 1 and 2, the camera is mechanically moved in order to obtain the entire shape of the roll caliber, so the mechanical error of the moving mechanism is superimposed on the measurement result, and the measurement accuracy deteriorates. End up. In general, the movement backlash of a slide mechanism such as a linear guide is about 20 μm or more. Therefore, in measuring the shape of the roll caliber, an error of about several tens mm to several mm occurs in the radius of curvature.

  On the other hand, in Patent Document 3, the imaging system is set to a magnification such that the entire roll caliber fits in one field of view, and an entire image of the roll caliber is created by one imaging, and each caliber roll is created from the created image. Extract the center contour, end contour, and taper contour, calculate the outermost dimension and contour center point from the center contour, and calculate and adjust the caliber roll corner points from the end contour and taper contour. The roll caliber shape is adjusted so that the corner point of the caliber roll is a predetermined position with respect to the corner point of the corresponding caliber roll. In this patent document 3, since the whole roll caliber is acquired by one imaging, the problem that the mechanical error by movement of imaging means, such as a camera, is superimposed on a measurement result is solved.

Japanese Patent No. 2595413 JP-A-8-5343 Japanese Patent No. 3835640

  By the way, in Patent Document 3, the roll caliber shape is adjusted based on the corner point of the caliber roll. The corner point of this caliber roll is a portion of the roll caliber that does not contribute to rolling, and the arc center of the roll caliber is not necessarily located at the center of both corner points of the caliber roll in the roll rotation axis direction. The precision control of grinding near the corner point is not high. Therefore, even if the roll caliber shape is adjusted based on the relative positional relationship between the corner points of the caliber roll, there is a problem that the arc portion of the roll caliber cannot often be accurately adjusted.

  Furthermore, in order to reliably detect the corner point of the caliber roll by the image, it is necessary that the silhouette of the tapered portion of the caliber roll is clearly imaged. Since it is a part where machine oil or the like adheres remarkably when it is incorporated into the stencil, the image tends to be unclear (see FIG. 3 of Patent Document 3), and the specific accuracy of the caliber roll corner points may deteriorate. There was a point. In order to solve this problem, it is conceivable to cut the entire caliber roll including the taper portion with high accuracy or to incorporate it into the housing so that machine oil does not adhere to the vicinity of the corner point. A new problem arises in that the cost and the built-in workload for the production and maintenance of caliber rolls increase.

  The present invention has been made in view of the above, and a roll caliber position detecting device and a roll caliber position capable of detecting the relative positional relationship of the caliber portion of each caliber roll for roll caliber shape adjustment with high accuracy. An object is to provide a detection method.

In order to solve the above-described problems and achieve the object, a roll caliber position detection device according to the present invention includes a cross-sectional shape in the rolling direction including all calibers of a roll caliber that is a rolling space formed by combining a plurality of caliber rolls. A cross-sectional shape acquisition unit for acquiring the shape, a roll identification unit for identifying each caliber roll based on the acquired cross-sectional shape in the rolling direction, and a shape profile of the caliber part of each identified caliber roll is obtained for each caliber roll Calculating means for calculating a residual which is an area between each shape profile within a range of the effective caliber angle set in advance and a target profile based on a preset cross-sectional shape in the rolling direction, and the calculated residual and Output means for outputting a relative position of the shape profile of each caliber roll with respect to the target profile; Characterized by comprising.

  Further, in the roll caliber position detection device according to the present invention, in the above invention, the calculation means calculates whether the target profile and the shape profile of each caliber roll intersect, and the output means includes: When intersecting, a position correction request for intersecting caliber rolls is output.

  Further, in the roll caliber position detection device according to the present invention, in the above invention, the calculation means obtains two circumferential residuals obtained by dividing the residual region into two in the circumferential direction of each caliber roll, A difference in circumferential residual is calculated, and the output means outputs a difference in each circumferential residual and a relative position of a shape profile of each caliber roll with respect to the target profile.

  Further, in the roll caliber position detection device according to the present invention, in the above invention, the residual calculated by the calculation means for the first caliber roll is fixed to the first caliber roll, and the target profile is moved. It is the residual of the case.

Also, the roll caliber position detection method according to the present invention detects the relative position of each caliber roll by acquiring a rolling direction cross-sectional shape including all calibers of the roll caliber that is a rolling space formed by combining a plurality of caliber rolls. In the roll caliber position detection method for assisting caliber roll adjustment, each caliber roll is identified based on the acquired cross-sectional shape in the rolling direction, and the shape profile of the caliber part of each caliber roll is obtained. A calculation step for calculating a residual that is an area between each shape profile within a range of an effective caliber angle set in advance and a target profile based on a preset cross-sectional shape in the rolling direction, and the calculated residual and The relative position of the shape profile of each caliber roll relative to the target profile Characterized by comprising an output step of force, the.

  Further, in the roll caliber position detection method according to the present invention, in the above invention, the calculation step calculates whether or not the target profile and a shape profile of each caliber roll intersect, and the output step includes: When intersecting, a position correction request for intersecting caliber rolls is output.

  Further, in the roll caliber position detection method according to the present invention, in the above invention, the calculation step obtains two circumferential residuals obtained by dividing the residual area into two in the circumferential direction of each caliber roll, A difference in circumferential residual is calculated, and the output step outputs a difference in each circumferential residual and a relative position of a shape profile of each caliber roll with respect to the target profile.

  Further, in the roll caliber position detection method according to the present invention, in the above invention, the residual calculated by the calculation step with respect to the first caliber roll is fixed to the first caliber roll, and the target profile is moved. It is the residual of the case.

  According to this invention, the cross-sectional shape acquisition means acquires the rolling direction cross-sectional shape including all calibers of the roll caliber that is a rolling space formed by combining a plurality of caliber rolls, and the roll identification means acquires the rolled material. Each caliber roll is identified based on the directional cross-sectional shape, and the calculating means obtains a shape profile of the caliber part of each identified caliber roll, and each of the caliber rolls within a range of effective caliber angles set in advance for each caliber roll The residual between the shape profile and the target profile based on the preset cross-sectional shape in the rolling direction is calculated, and the output means outputs the calculated residual and the relative position of the shape profile of each caliber roll with respect to the target profile Therefore, the relative position of the caliber part of each caliber roll for roll caliber shape adjustment support It is possible to detect the relationship with high precision.

FIG. 1 is a schematic diagram showing a schematic configuration of a roll caliber position detection device according to Embodiment 1 of the present invention. FIG. 2 is a diagram showing a schematic configuration in the bearing housing shown in FIG. FIG. 3 is a diagram illustrating an example of a bright and dark image received by the imaging unit. FIG. 4 is a diagram illustrating an example in which profiles and virtual gauge bars that are edge images generated by the image processing unit are displayed. FIG. 5 is a diagram illustrating the calculated residual. FIG. 6 is a flowchart showing a roll caliber position detection processing procedure according to the first embodiment of the present invention. FIG. 7 is a flowchart showing the procedure for calculating the roll caliber center position. FIG. 8 is a diagram schematically showing a method for calculating the center candidate point. FIG. 9 is a diagram schematically showing a plurality of center candidate point groups. FIG. 10 is a diagram schematically showing a bisected residual calculated by the roll caliber position detection device according to the second embodiment of the present invention. FIG. 11 is a flowchart showing a roll caliber position detection processing procedure according to the third embodiment of the present invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a roll caliber position detection device and a roll caliber position detection method according to the present invention will be described with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments. In the description of the drawings, the same or corresponding parts are denoted by the same reference numerals.

(Embodiment 1)
First, a first embodiment of the present invention will be described. FIG. 1 is a schematic diagram showing a schematic configuration of a roll caliber position detection device according to Embodiment 1 of the present invention. In addition, in this Embodiment 1, the roll caliber position detection apparatus at the time of applying to the 4 roll mill housing which is a kind of caliber roll mill is demonstrated.

  In FIG. 1, this roll caliber position detection apparatus has a roll 2 to be measured, which is composed of a plurality of caliber rolls, in a bearing housing 1, and the relative positions of the caliber rolls for adjusting the roll caliber shape of the roll 2. The position is detected.

  In the bearing housing 1, as shown in FIG. 2, four caliber rolls 2 a to 2 d are disposed so as to surround the rolled material 22. That is, the rolls 2a and 2b are arranged to face each other in the X direction, and the rolls 2c and 2d are arranged to face each other in the Y direction. However, the rolled material 22 is removed when the roll caliber position is detected. Each of the rolls 2a to 2d has rolling shafts 21a to 21d that are rotation axes of the respective rolls 2a to 2d, and the rolling direction of each of the rolls 2a to 2d and the axial direction of the rolling shafts 21a to 21d are arranged orthogonal to each other. The Therefore, when adjusting the roll caliber, each of the rolls 2a to 2d needs to adjust a direction parallel to the reduction direction (a reduction direction) and a direction orthogonal to the reduction direction (a thrust direction). For example, the roll 2a needs to adjust the X direction that is the reduction direction and the Y direction that is the thrust direction.

  In order to detect the position of the roll caliber of the roll 2 in the bearing housing 1, the roll caliber position detection device shown in FIG. 1 includes an illumination light source 7 that emits illumination light, an optical fiber 8 that guides the illumination light, From the light projection lens 6 that converts the illumination light guided from the optical fiber 8 into parallel light of a substantially cylindrical shape that covers the roll caliber as in the region E shown in FIG. 2 and is orthogonal to the rolling axes 21a to 21d. It has a floodlight system. In FIG. 1, the illumination light source 7 and the projection lens 6 are separated via the optical fiber 8, but the optical fiber 8 is deleted and the illumination light source 7 and the projection lens 6 are integrated. You may comprise.

  In addition, the roll caliber position detection device is an imaging lens that forms on the imaging surface a bright and dark image as shown in FIG. 9 and an imaging unit 10 that captures the bright and dark image input to the imaging surface described above, and a connection cable 10a that transmits the image data captured by the imaging unit 10 to the control main body unit 11. The imaging lens 9 is a lens that forms an object-side telecentric optical system, and the optical axis C of this optical system is preferably parallel to the pass line of the material to be rolled and coincides with the optical axis of the light projecting system. . The imaging unit 10 is realized using an area sensor such as a two-dimensional CCD. However, when it is necessary to increase the image resolution, the imaging unit 10 is realized using an optical axis sweeping means using a galvanometer mirror and a line sensor. May be.

  Here, assuming that the maximum rolling diameter by roll 2 is 90 mm and the roll caliber adjustment limit is 0.1 mm, the pixel resolution is 90/2048 = 0.044 mm by using an area sensor of 2048 × 2048 pixels. Sufficient resolution can be obtained.

  The control main body 11 includes a roll caliber as shown in FIG. 4 from the image input unit 12 as an input interface for receiving image data input via the connection cable 11a and the image data input to the image input unit 12. An image processing unit 13 that generates an edge image, a roll identification unit 14 that identifies each of the four rolls 2a to 2d from the edge image, and each roll 2a to 2d that is identified by the roll identification unit 14 are shown in FIG. A profile PF in which only such a caliber portion is cut out is generated, and between the profile PF and a virtual gauge bar 31 that is a target profile based on a preset cross-sectional shape in the rolling direction, for each of the rolls 2a to 2d As a calculating means for calculating the residual S within the range of the effective caliber angle θ that is a radius angle set in advance in Realized by the calculation unit 15, the display unit 16 as output means for displaying and outputting information on the residual S and the relative positions of the profiles PF (PF <b> 1 to PF <b> 4) of the rolls 2 a to 2 d with respect to the virtual gauge bar 31, and the CPU The image input unit 12, the image processing unit 13, the roll identification unit 14, the calculation unit 15, the display unit 16, and the control unit 17 that controls at least the illumination light source 7, holds various programs and data, and is necessary for calculation. And a storage unit 18 for securing a recording area. The light projecting system, the light receiving system, and the image input unit 12 function as a cross-sectional shape acquisition unit. The virtual gauge bar 31 corresponds to a gauge bar that has been used at the time of actual adjustment, and virtually represents the cross-sectional shape thereof.

  Note that widening jigs 3a and 3b are provided between the light projecting lens 6 and the imaging lens 9, and the roll gap is constrained so that the roll gap does not become unstable. That is, the widening jig 3a is provided between the light projecting lens 6 and the rolls 2a and 2b, and is inserted between the rolls 2a and 2b from the light projecting lens 6 side to widen the width between the rolls 2a and 2b. The widening jig 3b is provided between the imaging lens 9 and the rolls 2c and 2d, and is inserted between the rolls 2c and 2d from the imaging lens 9 side to widen the rolls 2c and 2d. The widening jigs 3a and 3b are formed in a cylindrical shape so that parallel light can pass therethrough. However, the widening jigs 3a and 3b are projected so as not to cause a ghost of reflected light from the inner surface. It is preferable to adjust the aperture of the optical lens 6, the inner diameters of the widening jigs 3a and 3b, and the numerical aperture of the light projection lens 6.

  As described above, it is preferable that the optical axis of the projection lens 6 and the optical axis of the imaging lens 9 coincide with each other and the pass lines of the bearing housing 1 are parallel or coincide with each other. However, in order to easily realize this positional relationship. In the first embodiment, the housing frame 4 is provided, and the bearing housing is fixed by arranging a stopper 5 on the upper surface of the housing frame 4 so as to surround the lower part of the bearing housing 1 from three directions. The stopper 5 is made to stop by a push bolt (not shown) so that the stopper 5 can be arranged and fixed easily and with good reproducibility. Further, the housing base 4 is provided with optical system holding mechanisms 19a and 19b for holding the light projecting lens 6 and the imaging lens 9, respectively. By the optical support mechanism 19a, 19b having the housing pedestal 4, the stopper 5, and the position adjusting mechanism, the above-described adjustment of the optical axis and the pass line is facilitated. In addition, it is preferable to provide a retracting mechanism that can retract the optical system holding mechanisms 19a and 19b to prevent damage when the bearing housing 1 is installed on the housing base 4.

  Here, the roll caliber position detection processing procedure according to the first embodiment will be described with reference to the flowchart shown in FIG. In FIG. 6, the control unit 17 causes the illumination light source 7 to output illumination light, causes the imaging unit 10 to capture a bright and dark image that reflects the roll caliber, and obtains image data indicating the bright and dark image using the image input unit 12 ( Step S101). Thereafter, the image processing unit 13 generates an edge image including the caliber portion shown in FIG. 4 from the image data (step S102). Thereafter, the roll identifying unit 14 identifies each roll 2a to 2d from the edge image, and the calculation unit 15 cuts out four profiles PF of the caliber portion of each roll 2a to 2d (step S103). Furthermore, the calculating part 15 produces | generates four all the profiles PF (PF1-PF4) (step S104).

  Thereafter, the calculation unit 15 determines whether or not the virtual gauge bar 31 has been set (step S105). This determination is to determine whether or not the processing is for two roll calibers. In other words, if the virtual gauge bar 31 has been set (step S105, Yes), the processing for one roll caliber has already been completed, and the processing for the second and subsequent roll calibers is performed. The process proceeds to S113.

On the other hand, when the virtual gauge bar 31 has not been set (step S105, No), the virtual gauge bar 31 corresponding to the predetermined rolling cross-sectional shape is set in an area surrounded by each roll caliber, and is displayed and output. (Step S106). Thereafter, when one reference roll caliber, for example, the profile PF (PF1) is selected on the display screen (step S107), the calculation process of the roll caliber center position of the reference roll caliber is performed (step S108). This roll caliber center position is used to determine the center of the effective caliber angle θ of the reference roll caliber.

When the roll caliber center position of the reference roll caliber is calculated, the display of the virtual gauge bar 31 is changed in accordance with the position correction of the position of the virtual gauge bar 31 on the display screen, and the reference roll caliber and virtual gauge bar at that time are changed. A residual S that is an area (the number of pixels) within the range of the effective caliber angle θ between 31 and 31 is calculated and displayed (step S109). In this case, the roll caliber PF1 is displayed at the fixed position, and only the virtual gauge bar 31 is corrected. Thereafter, it is determined whether or not there has been a setting input indicating that the position of the current virtual gauge bar 31 is the minimum residual S0 (step S110), and unless there is a setting input, the process of step S109 is performed and there is no setting input. If this is the case (step S110, Yes), a process of storing the residual S0 in the storage unit 18 is performed (step S111). Further, i = 1 is set (step S112). As a result, the position of the reference roll caliber is first determined.

  Thereafter, when one adjusted roll caliber, for example, roll caliber PF2 is selected from the other roll calibers (adjusted roll caliber) on the display screen (step S113), the roll caliber of this adjusted roll caliber is similar to step S108. A center position calculation process is performed (step S114). Thereafter, the calculation unit 15 is the residual S within the range of the effective caliber angle θ between the adjustment roll caliber and the virtual gauge bar 31 and centered on the adjustment roll caliber center position calculated in step S114. A certain residual Si is calculated (step S115).

  Thereafter, the calculation unit 15 determines whether or not the difference between the residual Si and the residual S0 is less than a predetermined residual threshold ΔS (step S116). If it is not less than the predetermined residual threshold value ΔS, the residual Si is large, so this adjustment roll caliber position correction request is displayed and output (step S117). Thereby, the operator corrects the position of the roll of the adjustment roll caliber. Then, it transfers to step S101 and acquires the profile of all the roll calibers mentioned above again. However, since the virtual gauge rod 31 has already been set in step S105, the processes in steps S106 to S112 are not performed. In step S113, the residual for the same adjustment roll caliber is calculated again, and the determination process in step S116 is performed.

  On the other hand, when the difference between the residual Si and the residual S0 is less than the predetermined residual threshold ΔS (step S116, Yes), the adjustment for the adjustment roll caliber is completed, and the variable i is incremented. (Step S118), it is determined whether there is a remaining adjustment roll caliber (Step S119). Note that n is the number of all roll calibers, and in this embodiment, the number of all roll calibers is 4. In this step S119, the variable i is 3, which is the number of adjusted roll calibers. It is determined whether or not. If there is a remaining adjustment roll caliber (step S119, Yes), the process proceeds to step S113, the next adjustment roll caliber is selected, and the adjustment to the selected adjustment roll caliber is performed. On the other hand, when there is no remaining adjustment roll caliber (step S119, No), it means that the position adjustment for all the roll calibers has been completed, and this process ends.

  Here, with reference to the flowchart shown in FIG. 7, the calculation process procedure of the roll caliber center position by step S108, S114 is demonstrated. First, the calculating part 15 reads the nominal caliber curvature radius R preset to the roll caliber (step S201). Further, the effective caliber area RE is set (step S202), and the variable k is set to the initial value 0 (step S203).

  Then, the calculation unit 15 selects two points from the profile PF in the effective caliber region RE (step S204), calculates a perpendicular bisector connecting the two points (step S205), and calculates the vertical 2 The intersection of the bisector and the profile PF is obtained, and a point on the vertical bisector on the concave side of the profile PF and having a distance R from the intersection is set as a candidate point (center candidate point) of the caliber circle center. (Step S206).

  Thereafter, the variable k is incremented (step S207), and it is further determined whether or not the variable k exceeds a predetermined integer value N set in advance (step S208). When the variable k does not exceed the predetermined integer value N (No in step S208), the process proceeds to step S204, and the center candidate point is calculated until the variable k exceeds the predetermined integer value N.

  On the other hand, when the variable k exceeds the predetermined integer value N (step S208, Yes), the weighted average value of the obtained coordinate group composed of a plurality of center candidate points is determined as the roll caliber center position currently being processed. (Step S209), the process returns to Step S108 or Step S114.

  That is, when calculating the roll caliber center position, the arithmetic unit 15, as shown in FIG. 8, and a vertical bisector of a line segment formed by a set of two different points P 1 a and P 1 b on the effective caliber curve, and this An intersection PC1 with the effective caliber curve is obtained, and a point having a distance R equal to a predetermined curvature radius (nominal caliber curvature radius) R of the effective caliber curve determined in advance from the intersection PC1 in a direction in which the profile PF is concave. It is calculated as the center candidate point P1 of the effective caliber curve. Similarly, the intersection PC2 between the vertical bisector formed by the pair of the two points P2a and P2b and the effective caliber curve is obtained, and the nominal caliber curvature is oriented from the intersection PC2 in the direction in which the profile PF becomes concave. A point having a distance R equal to the radius R is calculated as a center candidate point P2. The same process is repeated for other two sets of different points, and as shown in FIG. 9, a center candidate point group P composed of a plurality of center candidate points is calculated, and the weighted average position of this center candidate point group P Is determined as the roll caliber center position C for drawing the effective caliber curve.

  In the first embodiment, the virtual gauge bar 31 and each roll caliber are displayed and output, and the adjustment difference S between the virtual gauge bar 31 and each roll caliber is calculated and displayed, thereby adjusting the roll. Can be supported efficiently.

(Embodiment 2)
In the first embodiment described above, it is suitable for adjusting the direction in which the virtual gauge bar 31 and the roll caliber are close to each other, that is, the roll reduction direction, but in this second embodiment, the roll thrust direction is further accurately determined. It can be adjusted to.

  That is, as shown in FIG. 10, the residual S (Si) is divided into two in the circumferential direction (thrust direction) at the lowest part of the profile PF of the roll caliber, and the divided residuals Sl and Sr are obtained. Then, the thrust direction of the roll can be adjusted so that the difference obtained by subtracting the residual Si from the residual S1 is minimized. In this case, the image shown in FIG. 10 and the difference obtained by subtracting the residual Si from the residual Sl are displayed, and the roll adjustment is supported.

(Embodiment 3)
By the way, since the virtual gauge stick 31 is virtual, the virtual gauge stick 31 and the profile PF may interfere with each other. Since an actual gauge bar does not enter the roll caliber, the third embodiment takes measures to prevent such interference.

  That is, as shown in the flowchart of FIG. 11, the calculation unit 15 determines whether or not the virtual gauge bar 31 and the roll caliber are in contact after the determination processing in Step 116 (Step S <b> 116 a). In the case (Yes in Step S116a), the adjustment roll caliber position correction request is made (Step S117) as in the case where the residual Si is large. This determination process can be realized by an intersection detection process between the virtual gauge bar 31 and the profile PF.

  In Embodiments 1 to 3 described above, when adjusting the position of the reference roll caliber, the virtual gauge bar 31 is moved without moving the reference roll caliber. Of course, when adjusting the position of the reference roll caliber, The reference roll caliber may be moved.

DESCRIPTION OF SYMBOLS 1 Bearing housing 2, 2a-2d Roll 3a, 3b Widening jig | tool 4 Housing mount 5 Stopper 6 Light projection lens 7 Illumination light source 8 Optical fiber 9 Imaging lens 10 Imaging part 10a Connection cable 11 Control part main body 12 Image input part 13 Image processing Part 14 Roll identification part 15 Calculation part 16 Display part 17 Control part 18 Storage part 21a-21d Rolling axis 31 Virtual gauge bar PF, PF1-PF4 Profile C Roll caliber center position θ Effective caliber angle

Claims (5)

Cross-sectional shape acquisition means for acquiring a rolling direction cross-sectional shape including all calibers of a roll caliber that is a rolling space formed by combining a plurality of caliber rolls;
Roll identifying means for identifying each caliber roll based on the acquired rolling direction cross-sectional shape;
The shape profile of the caliber part of each identified caliber roll is obtained, and between each shape profile within the range of the preset effective caliber angle for each caliber roll and the target profile based on the preset cross-sectional shape in the rolling direction Calculating means for calculating a residual that is an area of
Output means for outputting the calculated residual and the relative position of the shape profile of each caliber roll with respect to the target profile;
A roll caliber position detecting device comprising: The calculating means calculates whether or not the target profile and the shape profile of each caliber roll intersect,
The roll caliber position detection apparatus according to claim 1, wherein the output means outputs a position correction request for the intersecting caliber rolls when intersecting. The calculation means calculates two circumferential residuals obtained by dividing the residual area into two halves in the circumferential direction of each caliber roll, and calculates a difference between the circumferential residuals;
The roll caliber position detection apparatus according to claim 1, wherein the output unit outputs a difference between the circumferential residuals and a relative position of a shape profile of each caliber roll with respect to the target profile.   The residual calculated by the calculating means for the first caliber roll is a residual when the first caliber roll is fixed and the target profile is moved. The roll caliber position detection apparatus as described in any one. Roll caliber position detection that detects the relative position of each caliber roll by acquiring the cross-sectional shape in the rolling direction including all calibers of the roll caliber, which is a rolling space formed by combining a plurality of caliber rolls, and supports the caliber roll adjustment. In the method
Each caliber roll is identified on the basis of the acquired cross-sectional shape in the rolling direction to determine the shape profile of the caliber portion of each caliber roll, and each profile in the effective caliber angle range preset for each caliber roll and A calculation step of calculating a residual which is an area between a target profile based on a preset rolling direction cross-sectional shape;
An output step of outputting the calculated residual and the relative position of the shape profile of each caliber roll with respect to the target profile;
A roll caliber position detection method comprising:

Images