JP3170750B2 - Shaped steel hole design support method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for supporting design of a steel-hole shape in a CAD system.

[0002]

2. Description of the Related Art Heretofore, this type of hole design work has been mainly performed based on a designer's long experience. For this reason,
There were many problems such as long time required for data analysis, lack of systematic design technology, and the lack of an appropriate modeling method. In addition, the number of skilled engineers tends to decrease, and there is a need for the development of a support system that enables even inexperienced engineers to efficiently perform hole design.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and it has been made possible to develop a new product, speed up the remodeling of a die, stabilize and improve the product quality, and improve the yield. It is an object of the present invention to provide a method for supporting a design of a steel-hole type, which enables improvement and transmission of a hole-type designing technique.

[0004]

According to a first aspect of the present invention, there is provided a method for supporting a design of a steel-hole shape, comprising: a basic element comprising an auxiliary line and a support line; A step of creating a caliber shape using at least the elements, a step of adding a shape dimension to the caliber shape, and a caliber drawing based on the auxiliary line of the caliber shape, the basic element and the finished shape element of the hole type, and the shape dimension. The method includes a step of performing a relationship definition and a parameter definition, and a step of performing various design checks on a caliber drawing. In the method for supporting a steel-hole-hole mold design according to the present invention (claim 2), the above process is performed on the caliber drawing at each rolling stage. The method for supporting a steel-hole-hole-shaped design according to the present invention (claim 3) further includes a step of displaying, as a list, a corresponding parameter and a change rate of a caliber drawing at each rolling stage. A method for supporting a steel-hole shape design according to the present invention (claim 4) is based on a step of changing a parameter of a list and changing a parameter definition of a caliber drawing, and a relation definition and a parameter definition after the change. The method further includes a step of designing and displaying the changed caliber drawing and a step of performing various design checks on the changed caliber drawing.

[0005] The hole shape design is to design a deformation process until a product (H-section steel, steel sheet pile, etc.) is obtained by gradually deforming the cross-sectional shape from the material shape. Need to be designed. In the present invention, the dimensions of each part of the mold are parameterized and quantified,
It facilitates various design checks. In addition, by changing the parameter value, the hole shape can be easily changed. The efficiency of the hole shape design is improved by greatly shortening the examination time for hole shape determination, and the unification of the design technology (method) is improved. It is planned.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a method for supporting a design of a steel-hole type according to the present invention, a rolling process from a raw material to a product is divided into several stages, and a change in dimension of each part at each stage and a change in an area. Comprehensively examine various conditions such as changes, the interference between the roll shape and the material shape, and change the hole shape. Further, the result is examined and reflected on the shape of the die, and this is repeated several times to design an optimum die. The hole type at each stage is called a caliber, and the number of the hole type is Kal in order from the product side.
1, Kal2, ..., Kaln. FIG.
FIG. 3 is a view showing a groove shape at each stage of a groove shape. In the figure, the cross-sectional shapes of the calipers Kal1 to Kal8 are illustrated.

There are two types of steel-hole design, a new design for developing a new product, and a remodeling design for the purpose of improving existing products and rolling work. As an example, FIG. 3 shows a flow of the groove design, and the following operations (1) to (4) are performed. Draw a product drawing and create a specification table from dimensions such as height and width of each part. The dimensions of each part of the die are examined from existing drawings and materials, and the design of a new die is examined, and the dimensions of each part of the die are created as a specification table. Based on the specification table, a temporary hole-shaped shape at each stage is drawn, and the change in dimensions between each caliber is adjusted. A design check is performed to check whether the designed hole shape is appropriate. Based on the results of the check, determine whether the hole shape is optimal, and change the specification table and hole shape as necessary. Draw the final determined sculpture diagram.

[0008] From these facts, the system to which the method according to the present invention is applied needs to satisfy the following functions, which is a guide for systematization. (1) Products and hole shapes can be easily drawn and corrected. (2) The hole shape is automatically changed by changing the specifications (parameters). (3) A change to an arbitrary caliber can be reflected to another caliber. (4) The change in shape before and after the change can be compared. (5) There are various rough design checking functions such as a change in dimensions, a change in cross-sectional area, and interference between a roll and a material due to rotation or movement. (6) The designed hole shape is stored as a database together with the design intent, and can be reused for design changes and similar product designs. (7) Roll layout design and roll order drawing can be created based on the die drawing.

Next, an outline of a system to which the method according to the present invention is applied will be described. FIG. 1 is a block diagram showing the configuration of the system. As shown in the figure, the system includes a stencil diagram initialization function 41, a stencil diagram drawing function, a parametric deformation function 43, a rough design check function, a roll layout design function 45, and a performance recording function. Hereinafter, these functions will be described.

(1) Drilling figure initializing function 41 The processing at the time of starting the drilling design is performed. By this work, the vertical and horizontal center lines, which are the basics at the time of drawing creation, are automatically drawn on the sculpture drawing. As a systematic internal process, the drawing unit required during each process is included in the CAD model. DETAIL
Create in advance. FIG. 4 shows the configuration for reference.

(2) Drilling Drawing Function 42 After analyzing the work of the drilling design, a frequently used function is incorporated in the system. Many of these functions can be combined with the standard functions of a conventional CAD system, but they have been newly added as judged to be essential system functions from the viewpoint of work efficiency. This greatly contributes to a reduction in working time and a reduction in operation errors.

(2.1) A function for drawing a shape and a dimension line.
There are two types of functions: a function to draw only dimension lines. In the normal case, the former function is used. However, when a drawing created by the two-dimensional drawing system and a drawing in which only a shape is previously drawn are used, additional drawing is performed using the latter function.

As a drawing method, basic drawing elements at the time of forming a die chart are analyzed to pattern each of points, straight lines, arcs and related dimensions. For example, the method of creating a point is the intersection of two straight lines, a point on a line segment, a point based on a relative distance, a straight line is a line segment connecting two points, an offset line and a normal line to a certain line segment, and an arc is two points For related dimensions, such as an arc by designating an arc and a radius, a batch drawing of a plurality of continuous arcs sharing a tangent line, a distance, an offset amount, a normal distance, an angle, a radius, and the like can be created. The designer can create a complex caliber shape in a short time only by inputting simple parameters and selecting related elements. In particular, the batch drawing function of a plurality of continuous arcs sharing a tangent line exhibits a remarkable advantage as compared with the standard function of the conventional CAD system.

From the viewpoint of the system, from the viewpoint of the system, it is necessary to classify the drawing elements in the die drawing according to the purpose of use of the system in order to give various deformations to the die drawing in the subsequent processing and to check its shape. . Specifically, a basic element (support line) representing the basic shape of the groove, an auxiliary element necessary for drawing, a finished shape element of the groove, and a dummy element (for example, 2
Element to create the coordinates of the intersection of two straight lines). These four elements are the colors on the screen,
It is recognized by the system based on the line thickness and the promise of the layer number indicating the group on the display.

FIG. 5 is an explanatory diagram showing a drawing process. In the drawing, the vertical and horizontal center lines 50 and 51 are respectively drawn by the above-described channel diagram initializing function 41, but horizontal and vertical auxiliary elements 52 to 57 are drawn, and the auxiliary elements 52 to 57 are drawn. A support line 60 is drawn based on 57. This support line 60 represents the basic shape of the hole, but this is not yet a completed stage, and is shown in FIG. 6 by assigning the support line 60 a finished shape element of the hole shape, here an arc. And finish it in a shape that will FIG.
Is shown in a state where a circle is described in a portion where dimensions are described and specific numerical values are omitted. When creating an arc, 2
Arcs can be created simultaneously by specifying arcs and tangents by specifying points and radii, and the creation of arcs is much easier than with conventional systems. In the process of drawing, a dimension line and its dimensions are entered.
A code for defining a parameter in an operation (details will be described later) is added to the dimension line (for example, T1 and T2).

(2.2) Copying function of drawing The shape of the product of the section steel is often H-section steel, I-section steel, etc., which are symmetrical in the left-right and up-down directions. There are many. By using this function, the designer only has to draw half or quarter of the sculpture diagram,
You can copy and draw the symmetrical parts.
In this case, not only the shape but also the dimensions and parameter definitions are copied at the same time, which is extremely useful for improving design efficiency and reducing operation errors. 5 and 6
In the example of (1), by drawing the left half or the right half to exert the copy function, it is possible to draw a symmetrical part.

(2.3) Copy and delete function of caliber From material to product, it is gradually deformed in the rolling process. Therefore, the shape of the adjacent calipers is relatively close, and it is often more efficient to make corrections after copying the sculpture diagram of the adjacent caliber than to create a new sculpture diagram. In addition, when a new caliber is to be added between caliburs by checking the depressability, a specific caliber may be deleted on the contrary. To perform these processes, this system has this function.

(3) Parametric deformation function 43 (3.1) Parameter definition and relationship definition In order to simulate the determination of the hole shape, it is necessary to recognize each part constituting the shape as a parameter. . It is also necessary to define the relationships between points, lines, arcs and dimension lines in the drawing. The relationship definition and the parameter definition are closely related to the procedure for creating a hole drawing by a conventional operation. For example, a reference graphic element (may be multiple elements) is determined, and other elements are determined by the distance from the reference graphic element or by an angle. When the element is an arc, the tangent is continuous. The relationship between the points, straight lines, arcs, and related dimensions that make up the draft drawing is defined by whether they touch, touch the corners of two elements, or define a radius constraint.

In this system, the following points are taken into consideration in order to shorten the working time and to make the system usable even by a hole type designer having relatively little experience. (A) A function for fully defining the relationship is added.
As described above, this function can be executed by four types of elements (basic elements (support lines), auxiliary elements required for drawing, and This is because they are classified into finish shape elements and dummy elements. This relationship is defined sequentially based on the distance from the reference line. For example, in the example of FIG. 7A, the line 71 is defined as being located on the positive side at a distance of “a” from the reference line 51, and the line 72 is defined as the line 71.
Is defined as being on the negative side at a distance of "b".

(B) When defining a relationship in a fully automatic manner, check a portion inconsistent with the sculpture diagram and echo it on the sculpture diagram (highlight the portion where the relationship was actually defined). Show. The inconsistent portion is, for example, a case where the method of determining the position of a certain line segment is not clear, or a case where it is not possible to determine which definition is to be adopted because it is defined repeatedly. When the designer corrects the inconsistency, the relationship can be fully automatically defined. For example, in the case of inputting a dimension, the dimension a and the dimension b are necessary to determine the point A in FIG. If there is no dimension a or b, the drawing cannot be determined (the position is not determined).
Of course, the relationship cannot be defined.

(C) In order to cope with a special case, it is possible to manually define a relationship and delete it. Also,
After the relationship is fully defined, a part of the relationship can be manually corrected, or after the relationship is manually defined, the rest can be automatically defined. (D) The definition of parameters has been simplified. For example, a list of parameters is displayed, and the corresponding
The relationship can be defined simply by selecting the dimensions in the sculpture. In particular, when the parameters between the calipers are discontinuous, for example, in Kal1, the parameters T1, T2, T
3, Kal2 has T1, T2, and Kal3 has T1, T2, T3, Ka
If the parameter T3 is discontinuous in l2, a definition such as T3 = 05 * (T1 + T2) is recognized from the caliber drawing.

(3.2) Change of Parameter Value The original purpose of the relationship definition and the parameter definition is how the parameter change affects the hole shape or how the change in the hole shape affects the parameter. This is to check in both directions whether or not to bring. It is set so that the check and change of the full power river and the check and change between any selected calibers can be performed. Also, by using this function, it is possible to quickly create similar-shaped dies having different sizes.

FIG. 8 shows the caliber parameters (each dimension T1,
T2...) And a change rate (%). The parameters (the dimensions T1, T2,...) Are defined by adding the corresponding symbols to the dimension lines or dimensions in the actual drawing as described above. In the CPU of FIG. 8, C indicates that it is constrained by the actual dimensions, P indicates that it is specified by calculation (for example, as T1 = T2 + T3), and U indicates the actual Is a code indicating whether or not it is used for There are three methods for changing the parameters: simultaneous change of the specifications (T1, T2,...) And the change rate (%), and only the specifications or the change rate. Also, in one caliber drawing, the caliber drawing is changed by changing the relationally defined dimension, or the related caliber parameters are linked by changing the change rate of the specification table of FIG. You can also change it. Then, after checking the change of the specification table of FIG. 8, when the specification table screen is closed, the caliber drawing is deformed based on the changed data, and the caliber shapes before and after the change are respectively different colors. Display. If the above check indicates that the change is unreasonable, the change will not be accepted. Then, when the desired change is accepted, the shape after the change is replaced with the shape before the change. In addition, in this system, in addition to the above, there are various parameter changing methods such as simultaneous change of a plurality of parameters, and the operability is excellent.

(4) Rough design check function 44 This is a function for performing various checks (e.g., a check of biting property, a check of rolling property, a check of fillability, etc.) on the designed hole shape. Check the nature.

(4.1) Checking the positional relationship between the material and the roll The function to check the biting property (interference state) by moving and rotating the material and the roll respectively has the following check functions. (A) Basic check The material is fixed, the upper and lower rolls are made to approach the material at the same ratio, and the point on one of the rolls that first contacts or the point where the upper and lower rolls first contact is displayed. FIG. 9 shows an example. (B) Rotation and movement check of the material Since the material undergoes complicated movement, rotation and deformation in the roll, the state of the movement and rotation of the material is checked by simulation. (C) Movement of roll Unlike the basic check, the upper and lower rolls are not approached to the material at the same ratio, but the upper and lower rolls are approached by an arbitrary amount to check the state of contact with the material. (D) Roll overlap check The material and the roll are fixed at an arbitrary position, and each area of the overlapped portion is checked.

(4.2) Checking Reduction Rate Checking the rate of change in the dimensional value of a specific portion (parameter) between calipers is referred to as a reduction rate check. Each part can be checked between full power river or any selected caliber, and can be displayed in table and graph. Also,
The results can be stored in a CAD system model and output to a plotter.

(4.3) Reduction Ratio Check Checking the ratio of change in the area of the designated area between the calipers is referred to as reduction ratio check. The display method and other functions are the same as those of the rolling reduction check.

(5) Roll layout design function 45 After the design of the hole shape is completed, a roll layout diagram is created. This operation is basically performed by using the standard functions of a conventional CAD system. Then, a roll order drawing is further created based on the roll layout drawing. This processing is automatically performed by taking a fixed offset distance in consideration of a combination of a roll-shaped arc and a straight line. Various dimensions such as the roll diameter are automatically created in the rough cut diagram, and the specific gravity of the rolls on the screen, the fixed shaft weight for each material on the drive side and the work floor side excluding the body of each roll, the roll purchase unit price, etc. The maximum diameter, the volume of the maximum diameter, the roughing volume, the maximum diameter weight, the order weight, the weight ratio of the order roll to the plain roll, and the amount are calculated and displayed on the screen. Record on file as actual record.

(6) Actual Product Recording Function 46 In the hole type design, work is often performed based on experience previously designed, and it is necessary to record actual work and use them effectively. The purpose of the design, the reasons for selection, the billet used,
The purpose of the remodeling, the remodeling location, the roll cutting amount, the rolling result, the roll roughing information, the drawing name on the CAD system, and the like can be recorded by a simple operation.

Although the above description is for a new design, in the case of a modified design, an approximate caliber shape is read out, its dimensions are changed, and thereafter the same operation as in the above case is performed. A modified caliber shape can be obtained.

[0031]

As described above, according to the present invention, the following effects are obtained. (1) A caliber shape is created by using at least the auxiliary line, the basic element, and the hole-shaped finishing shape element, and dimensions are written in the caliber shape to create a caliber drawing, so that drawing is facilitated. In addition, the knowledge and experience of the die designer can be directly incorporated. (2) Since the dimensions of the caliber shape are parameterized (parameter definition) and quantified, various design checks can be performed quantitatively. (3) The relationship definition and the parameter definition of the caliber shape are performed based on the auxiliary line of the caliber shape, the basic element, and the finished shape element and the dimension of the hole shape. Can be easily changed, even if there is a defect in various design checks, it is possible to quickly respond, and the time required to determine the caliber shape can be greatly reduced. (4) For this reason, the design efficiency of the caliber shape is improved, the design accuracy is improved, and the design technology is unified. (5) As a result, it is possible to develop new products, speed up remodeling of the die, stabilize and improve the product quality, improve the yield, and pass on the design technology of the die.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an outline configuration of a system to which a method according to the present invention is applied.

FIG. 2 is a diagram showing a groove shape at each stage of a groove shape.

FIG. 3 is a diagram showing a flow of processing at the time of new design.

FIG. 4 shows the DET required during each processing in the CAD model.
FIG. 3 is a diagram illustrating a configuration of AIL.

FIG. 5 is an explanatory diagram showing a drawing process.

FIG. 6 is an explanatory diagram showing a state at the final stage of drawing.

FIG. 7 is an explanatory diagram when dimensions are set in a caliber shape.

FIG. 8 is a diagram showing a list of caliber parameters (each dimension T1, T2,...) And reduction ratio (%).

FIG. 9 is an explanatory diagram of a basic check in a rough design check function.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Taichi Aoki 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Inside Nippon Kokan Co., Ltd. N.K.Exa Co., Ltd. No. KK Exa Co., Ltd. (56) References JP-A-62-137129 (JP, A) JP-A-63-165970 (JP, A) JP-A-8-18093 (JP, A) JP JP-A-8-314986 (JP, A) JP-A-7-152820 (JP, A) JP-A-4-288903 (JP, A) JP-A-6-210301 (JP, A) JP-A-5-317903 (JP) , A) JP-A-6-39401 JP, A) JP flat 5-277518 (JP, A) (58 ) investigated the field (Int.Cl. ^7, DB name) B21B 27/02 G06F 17/50 680

Claims (4)

(57) [Claims] 1. A step of creating a caliber shape using at least a basic element consisting of an auxiliary line and a support line and a hole-shaped finishing shape element with reference to a vertical and horizontal center line, and adding a shape dimension to the caliber shape Performing a relationship definition and parameter definition of the caliber drawing based on the auxiliary line of the caliber shape, the basic element, the finished shape element of the hole shape, and the shape dimensions, and performing various design checks on the caliber drawing. And a step of performing a shape steel hole die design supporting method. 2. The method according to claim 1, wherein said steps are performed on a caliber drawing at each rolling stage. 3. The method according to claim 2, further comprising the step of displaying, as a list, the corresponding parameters and the rate of change of the caliber drawings at each rolling stage. 4. A step of changing a parameter of the list and changing a parameter definition of the caliber drawing; and designing a changed caliber drawing based on the relationship definition and the changed parameter definition. 4. The method according to claim 3, further comprising a step of displaying and a step of performing various design checks on the changed caliber drawing.