KR102061900B1 - A Hot Forming Method for plate - Google Patents

Abstract

The present invention relates to a hot forming method for plate materials, comprising: a step of preparing plate materials including a plurality of lines; a step of projecting a laser beam of a distance measuring unit towards the plate materials; a step of acquiring an image of the plate materials through an image acquisition apparatus; a step of acquiring a temporary X coordinate and a temporary Y coordinate at a single point on the plurality of lines through an image, wherein the position of the laser beam of the distance measuring unit is the same as that of the plurality of lines placed on the plate materials, among the acquired images; a step of correcting the temporary X coordinate and the temporary Y coordinate on the single point on the plurality of lines to calculate an actual X coordinate and an actual Y coordinate at a single point on the plurality of lines, thereby calculating an actual Z coordinate at a single point on the plurality of lines; and a step of conducting hot forming by a hot forming apparatus in accordance with the information of actual coordinates on the plurality of lines. The present invention can provide a hot forming system for plate materials, which can produce a certain level of work results since it is not influenced by the skill level of a worker.

Description

Hot Forming Method for plate

The present invention relates to a method for hot forming a sheet, and more particularly, to a hot forming method in which a hot forming apparatus can automatically perform hot forming.

The plate of the outer plate forming the outer circumferential surface of the ship forms an atypical curved surface in order to reduce the resistance caused by the fluid when sailing the ship.

As a method of forming such an atypical curved surface, there is a method of cutting a flat plate in block units when a ship is constructed, and then processing the cut flat plate in a curved plate and then attaching the processed curved plate by welding.

In addition, another method of forming an atypical curved surface includes a method of processing a flat plate into a curved plate, wherein in the process of processing the flat plate into a curved plate, a worker heats the flat plate using a heat source such as a gas torch to shrink, A line heating process is used which is expanded and bent to be processed into curved sheets of a desired shape.

The plastic deformation occurs when the surface of the flat plate is locally heated, and out-of-plane angular deformation or in-plane shrinkage deformation is used, and the operator heats in a constant direction until a curved surface having a planned curvature is generated. Repeat this.

On the other hand, during the heating operation, the operator measures the curvature by using a template (Template), which is a pre-fabricated wood measurer in order to check whether the curvature of the heated workpiece plate conforms to the planned curvature, the produced curved plate is the template In full contact with, the desired curved sheet is considered to have been produced.

However, the process of operating the to-be-processed plate according to the linear heating method is performed by hand, and thus the efficiency of the work decreases, and in order to perform accurate curved processing, various heating such as accurate heating position, heating speed, cooling position, cooling speed, etc. There is a need to know the processing information, which is often dependent on the skill of the operator, the work output was not constant.

In addition, since the work of forming the curved plate by the linear heating method is a work continuously exposed to high heat and noise, it is considered as a work to avoid and known to cause various diseases adversely affecting the health of the worker.

Therefore, it is not affected by the proficiency of the worker, which produces a certain level of work results, minimizes the occurrence of health problems that may occur to the worker, and can simultaneously work to increase the efficiency of the work, the actual commercially available plate The development of hot forming system of the situation is required.

Korean Laid-Open Patent Publication No. 1999-0074014

The problem to be solved by the present invention is to provide a hot forming method of the plate material that can produce a certain level of work results without being affected by the skill of the operator.

The objects of the present invention are not limited to the above-mentioned objects, and other objects which are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above-mentioned problems, the present invention includes the steps of calculating a hot forming line of the target plate; Performing hot forming based on the hot forming line of the target plate; And comparing the curved state of the hot plated target plate with the curved state of the reference plate with hot forming completed, wherein calculating the hot forming line of the target plate includes: preparing a target plate; Pressing the target plate to form a first curved plate; Scanning a first surface of the first curved plate member to generate a plurality of coordinate values for a predetermined position of the first surface of the first curved plate member; Calculating respective curvature values for a plurality of coordinate values with respect to a predetermined position of the first surface of the first curved plate; And selecting a group having the same curvature value or a curvature value in a range of ± 1 to 2 among respective curvature values of a plurality of coordinate values with respect to a predetermined position of the first surface of the first curved plate member. It provides a hot forming method comprising the step of calculating the line to be connected to the hot forming line.

In addition, the present invention compares the curved state of the hot-formed target plate material and the curved state of the reference plate material for which the hot forming is completed, and the curved state of the hot-formed object plate material and the curved state of the reference plate material for which the hot forming is completed Calculating a hot forming line of the hot-formed target plate material if it does not match; Performing a secondary hot forming on the basis of a hot forming line of the hot formed target plate material; And comparing the curved state of the secondary hot formed target plate with the curved state of the reference plate on which the hot forming is completed.

In addition, the present invention is to calculate the hot forming line of the hot-formed target plate material, the step of calculating each curvature value for a plurality of coordinate values for a predetermined position of the first surface of the hot-formed target plate material ; And selecting a group having the same curvature value or a curvature value in a range of ± 1 to 2 among respective curvature values of a plurality of coordinate values with respect to a predetermined position of the first surface of the hot-formed target plate material. It provides a hot forming method characterized in that the step of calculating the line to be connected to the hot forming line.

In addition, the present invention in the step of performing the secondary hot forming, based on the hot forming line of the hot-formed target plate, when the hot forming line of the hot-formed target plate and the hot forming line of the target plate is different The secondary hot forming is performed on the basis of the hot forming line of the hot-formed target plate, and the hot forming line of the hot-formed target plate and the hot forming line of the target plate are the same. Provided is a hot forming method characterized in that the secondary hot forming is carried out at a predetermined interval apart from the hot forming line of the target plate material.

The present invention also provides a method for comparing the curved state of the second hot-formed target plate and the curved state of the reference plate on which the hot forming is completed. And comparing each curvature value with respect to a coordinate value and each curvature value with respect to a plurality of coordinate values with respect to a predetermined position of the first surface of said reference plate.

In addition, the present invention comprises the steps of preparing a target plate; Pressing the target plate to form a first curved plate; Scanning a first surface of the first curved plate member to generate a plurality of coordinate values for a predetermined position of the first surface of the first curved plate member; Calculating respective curvature values for a plurality of coordinate values with respect to a predetermined position of the first surface of the first curved plate; And selecting a group having the same curvature value or a curvature value in a range of ± 1 to 2 among respective curvature values of a plurality of coordinate values with respect to a predetermined position of the first surface of the first curved plate member. It provides a method for calculating a hot forming line of a sheet including a step of calculating the line to be connected by a hot forming line.

According to the present invention as described above, it is possible to provide a hot forming method of the plate material that can produce a certain level of work results without being affected by the skill of the operator.

In addition, in the present invention, each curvature value for a plurality of coordinate values for a predetermined position of the first surface of the first curved plate sheet is calculated, and based on the respective curvature values for the plurality of coordinate values, hot Since calculating with a forming line, forming a plurality of lines for hot forming can be automated.

In addition, in the present invention, the hot forming is performed through the hot forming line calculated through the automation as described above, and after the hot forming, the curved state of the hot plated target plate and the curved surface of the reference plate in which hot forming is completed. By comparing the states, the curved states of the target plate can be compared through an automated process.

1 is a schematic diagram for explaining an operator creating a plurality of lines on a plate.
2 is a flowchart illustrating a method for calculating a hot forming line according to the present invention, and FIGS. 3A to 3D are schematic views for explaining a method for calculating a hot forming line according to the present invention.
4 is a flowchart illustrating a hot forming method of a plate according to the present invention.
5 is an exemplary view showing a reference plate material for which hot forming is completed.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Regardless of the drawings, the same reference numbers refer to the same components, and “and / or” includes each and every combination of one or more of the items mentioned.

Although the first, second, etc. are used to describe various components, these components are of course not limited by these terms. These terms are only used to distinguish one component from another. Therefore, of course, the first component mentioned below may be a second component within the technical spirit of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises" and / or "comprising" does not exclude the presence or addition of one or more other components in addition to the mentioned components.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art. In addition, the terms defined in the commonly used dictionaries are not ideally or excessively interpreted unless they are specifically defined clearly.

The spatially relative terms " below ", " beneath ", " lower ", " above ", " upper " It can be used to easily describe a component's correlation with other components. Spatially relative terms are to be understood as including terms in different directions of components in use or operation in addition to the directions shown in the figures. For example, when flipping a component shown in the drawing, a component described as "below" or "beneath" of another component may be placed "above" the other component. Can be. Thus, the exemplary term "below" can encompass both an orientation of above and below. The components can be oriented in other directions as well, so that spatially relative terms can be interpreted according to the orientation.

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

1 is a schematic diagram for explaining an operator creating a plurality of lines on a plate.

As shown in FIG. 1, the operator 12 may draw the plurality of lines 11 on the sheet 10 based on the expertise of the sheet material, the sheet thickness, the amount of curvature to be deformed, and the like. Properly produced according to the needs of hot forming.

That is, the position to be hot formed in the plate 10, that is, the plurality of lines (11a, 11b) of the line 11 is determined by expert knowledge about the material of the plate, the thickness of the plate, the amount of curvature to be deformed, etc. In other words, since the variables of the necessity of hot forming vary, to date, generating the plurality of lines 11 corresponds to an area that cannot be automated.

Accordingly, the present applicant has developed a method of calculating a hot forming line of a plate as described below in order to automate a method of generating a hot forming line in the plate.

Hereinafter, a method of calculating the hot forming line of the plate will be described.

2 is a flowchart illustrating a method for calculating a hot forming line according to the present invention, and FIGS. 3A to 3D are schematic views for explaining a method for calculating a hot forming line according to the present invention.

First, referring to FIGS. 2 and 3A, the method for calculating a hot forming line according to the present invention includes preparing a target plate 100 (S100).

In this case, the target plate is a plate for performing hot forming, hereinafter, for convenience of description, a plate for performing the hot forming will be defined as a target plate.

The target plate 100 corresponds to an outer plate constituting the outer circumferential surface of the ship, the target plate should be formed atypical curved surface in order to reduce the resistance by the fluid when sailing the ship.

However, the type of the target plate in the present invention is not limited.

Subsequently, referring to FIGS. 2 and 3B, the method for calculating a hot forming line according to the present invention includes pressing the target plate 100 to form a first curved plate 110 (S110). .

Forming the primary curved plate member 110 by pressing the target plate material 100 should be curved by the hot forming by pressing the target plate material preliminarily before proceeding to hot forming described later. This is to minimize the amount to be done.

For example, forming the primary curved plate member 110 by pressing the target plate member 100 may be molding 70 to 80% of an amount to finally form an atypical curved surface.

At this time, pressing the target plate material, it can be pressed through a known pressure roller, which is obvious in the art, so the following detailed description will be omitted.

However, the present invention is not limited to the presence or absence of the step of forming a curved surface on the target plate through the pressing.

Subsequently, referring to FIGS. 2 and 3C, in the method for calculating a hot forming line according to the present invention, a first surface of the first curved plate member 110 may be scanned and the first curved plate member 110 may be removed. Generating a plurality of coordinate values for a predetermined position of the first surface (S120).

That is, as shown in Figure 3c, the position of the first surface of the first curved surface plate 110 may be subdivided by the grid coordinates, for example, a1. The position can be set by the coordinates a2, a3 ...., b1, b2, b3 ...., c1, c2, c3 ..., and so on.

In this case, the coordinate values are divided into X, Y, and Z values, and a predetermined position of the first surface of the first curved plate member 110 may be set as three-dimensional coordinates. For example, a1 (Xa1, Ya1). , Za1) may be set, b1 (Xb1, Yb1, Zb1) may be set, and c1 (Xc1, Yc1, Zc1) may be set.

On the other hand, generating a plurality of coordinate values for a predetermined position of the first surface of the first curved plate member 110 may use a method for generating a general three-dimensional coordinate value, for example, With reference to Korea Patent Registration No. 10-1920610, which is registered and applied, a plurality of coordinate values of a predetermined position of the first surface of the first curved plate member 110 may be generated.

At this time, generating a plurality of coordinate values for a predetermined position of the first surface of the first curved plate member 110, for example, the coordinate value is generated through a computer program, the coordinate value through a known display This can be displayed, and since this corresponds to a general matter, a detailed description thereof will be omitted.

Subsequently, referring to FIGS. 2 and 3C, the method for calculating a hot forming line according to the present invention may include curvatures for a plurality of coordinate values with respect to a predetermined position of a first surface of the first curved plate member 110. Computing the value (S130).

In general, if the curve is a cross section of a surface (ie, the curve is given by the intersection of the surface with a plane), the curvature of the surface is given by the curvature of the curve.

The curvature of all planar curves (and straight lines that can be considered as circles with infinite radius) varies from point to point.

The curvature at a point is defined as the limit of the rate of change of the curve in the direction of the arc as it approaches the given point from both ends of the arc.

The curvature at all points on a circle is the inverse of the radius of the circle, and the curvature of the other curves is the inverse of the radius of the circle that can be drawn most closely at a given point on the curve.

When calculating the curvature at a point on a surface, there are numerous cross sections to choose from. The most useful cut planes are the two cross-sections at this point, including the normal to the surface (the line perpendicular to the tangent plane). One of these planes makes the cross section with the maximum curvature of all such cross sections, and the other makes the cross section of the minimum curvature. These two planes determine the two principal directions for a given point on the surface, which are perpendicular to each other. At this time, the curvature of the circumferential direction is referred to as the curvature of the curved surface.

At some point, the average curvature of the surface can be found by adding the principal curvatures or half of their sum.

In other words, the curvature refers to a change in the inclination of the tangent generated when a point moves along an arc of a curve at a constant speed, and in the case of a circle or sphere, the curvature corresponds to the inverse of its radius.

On the other hand, the radius of the circle closest to the curve at one point of the curve, that is, the best approximating circle, is called the "radius of curvature" at that point.

In the present invention, calculating each curvature value for a plurality of coordinate values of a predetermined position of the first surface of the first curved surface plate 110 may be calculated through a generally known curvature value calculation method. In the present invention, the method of calculating the curvature value is not limited.

At this time, the calculation of each curvature value for a plurality of coordinate values for a predetermined position of the first surface of the first curved plate member 110, for example, a known program or a known curvature value calculator The curvature value is generated through the display, and thus the curvature value can be displayed through a known display, which is a general matter, and thus, a detailed description thereof will be omitted.

2 and 3D, the method for calculating the hot forming line according to the present invention includes a curvature value of each of a plurality of coordinate values with respect to a predetermined position of a first surface of the first curved plate member 110. And selecting a group having the same curvature value or a curvature value in a range of ± 1 to 2, and calculating a line connecting the groups as a hot forming line (S140).

For example, as shown in FIG. 3D, a group A having the same curvature value is selected, or a group B having a curvature value in a range of ± 1 based on a coordinate value of a point is selected. Alternatively, a group C having a curvature value in a range of ± 2 based on the coordinate value of any one point is selected, and a line connecting the groups is calculated as a hot forming line.

In this case, the range of ± 1 to 2 may mean ± 1 to 2mm when the unit of the curvature value is mm, but the unit of the curvature value is not limited in the present invention.

That is, in the present invention, each curvature value for a plurality of coordinate values for a predetermined position of the first surface of the first curved surface plate 110 is calculated, and each curvature value for the plurality of coordinate values is calculated. Based on this, the hot forming line is calculated.

At this time, among the curvature values of each of the plurality of coordinate values for a predetermined position of the first surface of the first curved plate plate 110 to select a group having the same curvature value or a curvature value in the range of ± 1 ~ 2 The group may be selected through a known program, and the connection line of the selected group may be displayed through a known display, which is a general matter, and thus, a detailed description thereof will be omitted.

As described above, in general, the position to be hot formed in the plate, that is, the plurality of lines is determined by the expert knowledge of the material of the plate, the thickness of the plate, the amount of curvature to be deformed, and the like. Since the variables of necessity vary, to date the creation of the plurality of lines has been an area that cannot be automated.

However, in the present invention, each curvature value for a plurality of coordinate values for a predetermined position of the first surface of the first curved plate plate 110 is calculated, and based on each curvature value for the plurality of coordinate values As a result, the calculation of the hot forming line can be automated to form a plurality of lines for hot forming.

Hereinafter, the hot forming method of a board | plate material using the above-mentioned hot forming line calculation method is demonstrated.

4 is a flowchart illustrating a hot forming method of a plate according to the present invention.

First, referring to FIG. 4, the hot forming method of the plate according to the present invention includes calculating a hot forming line of the target plate (S200).

At this time, calculating the hot forming line of the target plate, as shown in Figure 2 above, preparing the target plate 100 (S100); Pressing the target plate member 100 to form a first curved plate member 110 (S110); Calculating each curvature value for a plurality of coordinate values with respect to a predetermined position of a first surface of the first curved plate member 110 (S130); And selecting a group having the same curvature value or a curvature value in a range of ± 1 to 2, among respective curvature values of a plurality of coordinate values with respect to a predetermined position of the first surface of the first curved plate member 110, Computing the line connecting the groups as a hot forming line (S140).

Since it is as described above, a detailed description thereof will be omitted.

In this case, the target plate is a plate for performing hot forming, hereinafter, for convenience of description, a plate for performing the hot forming will be defined as a target plate.

On the other hand, the step of calculating the hot forming line of the plate can be, for example, proceed through a known computer program, which can be displayed through a known display.

Next, referring to FIG. 4, the hot forming method of the plate according to the present invention includes performing a hot forming on the basis of the hot forming line of the target plate (S210).

Since the step of performing such hot forming corresponds to obvious matters in the art, the following detailed description will be omitted, and reference may be made to Korean Patent Registration No. 10-1920610 registered and filed by the present applicant.

Next, referring to FIG. 4, the hot forming method of the sheet according to the present invention includes comparing the curved state of the hot plated target plate with the curved state of the reference plate on which the hot forming is completed (S220).

5 is an exemplary view showing a reference plate material for which hot forming is completed.

At this time, the reference plate material is a hot forming is completed, it means a plate that can be used as a product after the final hot forming is completed, will be defined as a reference plate for convenience of description.

Therefore, the reference plate, the material of the target plate and the plate, the thickness of the plate, the amount of curvature to be deformed may be defined as the same plate.

As shown in FIG. 5, the reference plate 200 includes a plurality of coordinate values for a predetermined position of the first surface of the reference plate, and more specifically, the first surface of the reference plate 200 The location can be subdivided by grid coordinates, for example A1. The position can be set by the coordinates of A2, A3 ...., A1, A2, A3 ...., A1, A2, A3 ..., and so on.

In this case, the coordinate values are divided into X, Y, and Z values, and a predetermined position of the first surface of the reference plate 200 may be set as three-dimensional coordinates, for example, A1 (XA1, YA1, ZA1). It may be set to the coordinates of, may be set to the coordinates of B1 (XB1, YB1, ZB1), may be set to the coordinates of C1 (XC1, YC1, ZC1).

On the other hand, A1. Of the reference plate 200. Coordinates of A2, A3 ...., A1, A2, A3 ...., A1, A2, A3 ..., and the like are described in a1. Corresponds to the position corresponding to the coordinates a2, a3 ...., b1, b2, b3 ...., c1, c2, c3 ..., and so on.

In addition, the reference plate 200 includes a pre-calculated respective curvature value for a plurality of coordinate values for a predetermined position of the first surface of the reference plate 200.

Subsequently, referring to FIG. 4, the comparing of the curved state of the hot plated target plate and the curved state of the reference plate on which the hot forming is completed may include a plurality of predetermined positions of a first surface of the hot plated target plate. And a curvature value for each of the plurality of coordinate values and a curvature value for each of the plurality of coordinate values for a predetermined position of the first surface of the reference plate.

That is, the said hot-formed target board | plate material is a1. At the coordinates a2, a3 ...., b1, b2, b3 ...., c1, c2, c3 ..., etc., each of the modified curvature values after hot forming will be Each curvature value is compared with each curvature value for a plurality of coordinate values with respect to a predetermined position of the first surface of the reference plate.

Therefore, in the present invention, a1. At the coordinates a2, a3 ...., b1, b2, b3 ...., c1, c2, c3 ..., etc., it is necessary to calculate each of the deformed curvature values after hot forming, Calculating each of these curvature values may be calculated through a known method of calculating the curvature as described above.

Next, referring to FIG. 4, the hot forming method of the plate according to the present invention may be performed by comparing the curved state of the hot plated target plate with the curved state of the reference plate on which hot forming is completed. Computing a hot forming line of the hot-formed target plate material when the curved state and the curved state of the reference plate material for which the hot forming is completed do not match (S230).

In this case, the curved state of the hot-formed target plate and the curved state of the reference plate on which the hot forming is completed do not correspond to the curved state of the hot-formed target plate and the curved surface of the reference plate on which the hot forming is completed. When the states match and the curved state of the hot-formed target plate and the curved state of the reference plate on which the hot forming is completed are not included in the error tolerance, the error tolerance is set by the user. Can be.

At this time, calculating the hot forming line of the hot-formed target plate material, referring to the steps of FIGS. 2, 3C and 3D described above, a plurality of predetermined positions of a first surface of the hot-formed target plate material Calculating each curvature value with respect to the coordinate value; And selecting a group having the same curvature value or a curvature value in a range of ± 1 to 2 among respective curvature values of a plurality of coordinate values with respect to a predetermined position of the first surface of the hot-formed target plate material. The process of calculating a line to be connected as a hot forming line may be performed to calculate a hot forming line of the hot plated target plate.

Next, referring to FIG. 4, based on the hot forming line of the hot-formed target plate, the second hot forming may be performed (S240).

Since the step of proceeding such a secondary hot forming corresponds to the obvious matters in the art, the following detailed description will be omitted, it can be referred to the Korean Patent Registration No. 10-1920610 filed by the applicant.

In this case, when the second hot forming is performed on the basis of the hot forming line of the hot plated target plate, the hot forming line of the hot plated target plate and the hot forming line of the target plate are different from each other. Secondary hot forming is performed based on the hot forming line of the formed target plate material.

However, when the second hot forming is performed on the basis of the hot forming line of the hot plated target plate, when the hot forming line of the hot formed target plate and the hot forming line of the target plate are the same, the hot forming Secondary hot forming is performed at regular intervals from the hot forming line of the formed target plate material.

That is, in the case where the secondary hot forming is performed in the primary hot formed region, since the physical properties of the secondary hot formed sheet material are lowered, the hot forming line of the hot formed target plate and the hot plate of the target plate When the forming lines are the same, the secondary hot forming is performed at a predetermined interval apart from the hot forming line of the hot formed target plate.

In this case, the spacing of the predetermined interval may mean a state spaced apart from 10 to 30cm in a state parallel to the hot forming line of the hot-formed target plate material, but this is exemplary, in the present invention It does not limit the range of spaced intervals.

However, in the case where the first hot-formed area and the second hot-formed area partially overlap, the physical properties of the second hot-formed plate material do not significantly decrease, and in this case, the hot-formed hot-formed plate It can be determined that the line and the hot forming line of the target plate material are different.

Subsequently, referring to FIG. 4, the method of hot forming a plate according to the present invention includes comparing a curved state of the reference plate in which hot forming is completed with a curved state of the target plate that is secondary hot formed (S250). ).

Since this is the same principle as the step of comparing the curved state of the hot plate of the target plate of the hot-formed target plate of step S220 described above, a detailed description thereof will be omitted.

Thereafter, the curved state of the second hot-formed target plate is compared with the curved state of the reference-plate material for which hot forming is completed, and the curved state of the second hot-formed target plate is the same as the curved state of the reference plate for which hot forming is completed. In the case, or when the curved state of the secondary hot-formed target plate and the curved state of the reference plate on which the hot forming is completed are different within an error tolerance, the hot forming of the plate is terminated.

However, when the curved state of the secondary hot-formed target plate and the curved state of the reference plate on which the hot forming is completed do not coincide, the steps of S230 to S250 may be repeated again.

That is, the steps S230 to S250 may be repeatedly performed until the desired curvature range and the numerical value are reached.

However, when the curved state of the secondary hot-formed target plate and the curved state of the reference plate on which the hot forming is completed do not coincide, the curved state of the secondary hot-formed target plate and the hot forming are completed. When the curved state of the reference plate is the same and the curved state of the second hot-formed target plate and the curved state of the reference plate on which the hot forming is completed is not included in the error tolerance, this error tolerance The range can be set by the user.

By the above method, the hot-formed board | plate material which concerns on this invention can be manufactured.

As described above, in the present invention, each curvature value for a plurality of coordinate values for a predetermined position of the first surface of the first curved plate is calculated, and based on each curvature value for the plurality of coordinate values, Since it is calculated with a hot forming line, forming a plurality of lines for hot forming can be automated.

In addition, in the present invention, the hot forming is performed through the hot forming line calculated through the automation as described above, and after the hot forming, the curved state of the hot plated target plate and the curved surface of the reference plate in which hot forming is completed. By comparing the states, the curved states of the target plate can be compared through an automated process.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. You will understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

Claims (6)

Calculating a hot forming line of the target plate;
Performing hot forming based on the hot forming line of the target plate; And
Comparing the curved state of the hot plated target plate with the curved state of the reference plate with hot forming completed;
Calculating the hot forming line of the target plate material,
Preparing a target plate;
Pressing the target plate to form a first curved plate;
Scanning a first surface of the first curved plate member to generate a plurality of coordinate values for a predetermined position of the first surface of the first curved plate member;
Calculating respective curvature values for a plurality of coordinate values with respect to a predetermined position of the first surface of the first curved plate; And
Either the same curvature value of each of the plurality of curvature values of a plurality of coordinate values for a predetermined position of the first surface of the first curved plate, or a plurality of coordinate values for a predetermined position of the first surface of the first curved plate Selecting a group having a curvature value in a range of ± 1 to 2 based on a coordinate value of one point, and calculating a line connecting the groups as a hot forming line. The method of claim 1,
When the curved state of the hot-formed target plate is compared with the curved state of the reference-plate which has been hot-molded, and the curved state of the hot-formed target plate is not the same as the curved state of the hot-formed reference plate, Calculating a hot forming line of the hot formed target plate;
Performing a secondary hot forming on the basis of a hot forming line of the hot formed target plate material; And
Comparing the curved state of the second hot-formed target plate material and the curved state of the reference plate material for which the hot forming is completed. The method of claim 2,
Computing the hot forming line of the hot-formed target plate material,
Calculating respective curvature values for a plurality of coordinate values of a predetermined position of a first surface of the hot-formed target plate material; And the same curvature value among respective curvature values of a plurality of coordinate values of a predetermined position of the first surface of the hot-formed target plate, or a plurality of coordinate values of a predetermined position of the first surface of the hot-formed target plate. Selecting a group having a curvature value in a range of ± 1 to 2 based on a coordinate value of a point, and calculating a line connecting the groups as a hot forming line. The method of claim 3, wherein
In the step of performing a second hot forming on the basis of the hot forming line of the hot-formed target plate material,
If the hot forming line of the hot plated target plate is different from the hot forming line of the target plate, secondary hot forming is performed based on the hot forming line of the hot plated target plate,
When the hot forming line of the hot-formed target plate material and the hot forming line of the target plate material are the same, the secondary hot forming is performed at regular intervals based on the hot forming line of the hot-formed target plate material. Hot forming method. The method of claim 2,
Comparing the curved state of the second hot-formed target plate material and the curved state of the reference plate material that the hot forming is completed,
Each curvature value for a plurality of coordinate values for a predetermined position of the first surface of the hot-formed target plate material, and each curvature value for a plurality of coordinate values for a predetermined position of the first surface of the reference plate material Hot forming method, characterized in that the step of comparing. delete

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