KR101008141B1 - System and method for mold design of tube hydroforming - Google Patents

Abstract

One aspect of the present invention relates to a tube hydroforming mold design system and method, and more particularly, to a system and method for automatically performing a process in which a mold designer repeatedly inputs data and models a shape by using a three-dimensional CAD. .

The present invention includes a data input unit for receiving tube shape information data of a tube hydroforming part and data of various parameters required for mold design of the part; An initial cylinder shape generating unit for generating an accumulating punch for parts and an initial entity shape of a cylinder, respectively; A division generating unit for dividing and generating three-dimensional solid shapes of the upper and lower inserts of the component; A final cylinder shape generator for generating a three-dimensional solid shape of the cylinder; A plate shape generating unit for generating a three-dimensional solid shape of a base plate for fixing a mold made from a part to a press, a wear plate and a flexure plate to allow movement and contact of the upper and lower monoblocks of the part; Monoblock shape generating unit for generating a three-dimensional solid shape of the upper and lower monoblock; A support shape generating unit for generating a three-dimensional solid shape of the support for fixing the cylinder; And a guide post shape generator for generating a three-dimensional solid shape of the guide post of the component.

Hydroforming, 3D CAD, 3D Entities, Cylinders, Plates

Description

System and method for mold design of tube hydroforming

One aspect of the present invention relates to a tube hydroforming mold design system and method, and more particularly, to a system and method for automatically performing a process in which a mold designer repeatedly inputs data and models a shape by using a three-dimensional CAD. .

In general, the hydroforming molding method is a molding method in which a high pressure is applied to one surface of a tube to form a desired shape. The hydroforming molding method may bring about improvement in dimensional accuracy and reduction of spring back. Here, the tube is molded and manufactured by a mold, in particular, in consideration of the shape of various products such as the car body, the size and thickness of the tube, the size and quantity of through holes, the size of the axial cylinder, and other ejector cylinders It is designed after deforming the shape to form.

CAD systems for designing commercially available tube hydroforming parts perform only the functions provided by the basic CAD system, but the modules or functions themselves are constructed on the basis of inter-part interference conditions and other related experiences. The situation is to create a three-dimensional shape by hand.

Therefore, this CAD system takes a considerable amount of time because the parts used to design the tube hydroforming mold must be designed one by one, thus failing to meet the production time of the product production or due to the mistakes of the designers. There is a problem that a defect occurs.

One aspect of the present invention is a complex and repetitive tube hydroforming mold design work by inputting only the shape and basic information of the parts (tube thickness, cylinder moving distance, number and size of holes) to automatically make the combination design easily It is an object to provide a system and method.

Another aspect of the present invention is to automatically generate a mold model regardless of the shape, thickness and size of the part, thereby enabling the rapid design of complex tube hydroforming molds.

Another aspect of the present invention is to provide a system and method that can increase the productivity and efficiency of the tube hydroforming mold design work by systemizing to prevent data input mistakes that can occur frequently in the tube hydroforming modeling process in advance For the purpose of

According to an aspect of the present invention, there is provided a data input unit for receiving tube shape information data of a tube hydroforming component and data of various parameters required for mold design of the component; An initial cylinder shape generating unit receiving tube shape information data and cylinder capacity information data from the data input unit to generate the initial pressure shape of the cylinder and the pressure accumulation punch of the component, respectively; A division generating unit receiving tube shape information data from the data input unit and dividing and generating three-dimensional solid shapes of the upper and lower inserts of the part; A final cylinder shape generation unit receiving tube shape information data from the data input unit to generate a three-dimensional solid shape of the cylinder; A plate shape generating unit for generating a three-dimensional solid shape of a base plate for fixing a mold made from the part to a press, a wear plate and a flexure plate that allow movement and contact of the upper and lower mold monoblocks of the part; A monoblock which receives the tube shape information data, the cylinder shape information data, and the plate shape information data from the data input unit, the final cylinder shape generating unit, and the plate shape generating unit, respectively, to generate three-dimensional solid shapes of the upper and lower monoblocks. Shape generating unit; A support shape generation unit configured to receive shape information data of a cylinder from the final cylinder shape generation unit and generate a three-dimensional solid shape of a support for fixing the cylinder; And a guide post shape generation unit receiving tube shape information data and mono block shape information data from the data input unit and the mono block shape generation unit, respectively, to generate a three-dimensional solid shape of the guide post of the component. Provides a tube hydroforming mold design system.

In one embodiment of the present invention, the tube shape information data comprises: shape information data representing the shape of the upper and lower surfaces of the mold made from the part; Shape information data indicating the shape and position of the insert, wear plate, flasher plate, and hole of the mold made from the part; And shape information data indicating a shape of a cross section indicating a shape and a position of a feeding punch of a metal mold made from the component.

In another embodiment of the present invention, the various parameters provide a tube hydroforming mold design system, characterized in that any one of the thickness of the part, the feeding distance, the cylinder capacity, the number of the piercing cylinder inserted into the top and bottom. .

In another embodiment of the present invention, the initial shape generating unit provides a tube hydroforming mold design system, characterized in that for determining the size and the number of bolts provided in the accumulator punch.

In another embodiment of the present invention, the initial shape generating unit determines the size and the number of bolts provided in the pressure-reducing punch by determining the length and width of the tube, the tube hydroforming mold design system To provide.

In another embodiment of the present invention, the division generating unit determines the height of each of the selected portion of the upper and lower mold inserts to determine the height of the insert upper part, characterized in that the tube generated by dividing the three-dimensional solid shape Provide hydroforming mold design system.

In another embodiment of the present invention, the support shape generating unit according to the ratio of the horizontal direction of the cylinder in the longitudinal direction and the inclination of the horizontal direction and the thickness of the support to the top of the cylinder and the horizontal distance from one end of the support Provided is a tube hydroforming mold design system characterized by generating a three-dimensional solid shape.

In another embodiment of the present invention, the plate shape generating unit provides a tube hydroforming mold design system, characterized in that to generate the three-dimensional solid shape by determining the number and size of the wear plate and the flexure plate.

In another embodiment of the present invention, the plate shape generating unit provides a tube hydroforming mold design system, characterized in that for generating the three-dimensional solid shape of the base plate according to the length and width of the bottom of the press.

In another embodiment of the present invention, the plate shape generating unit determines the base distance between the monoblock and the base plate, the minimum distance between the press and the base plate, the width of the press to determine the three-dimensional solid shape of the base plate It provides a tube hydroforming mold design system, characterized in that to produce a.

According to another aspect of the present invention, a data input unit receives tube shape information data of a tube hydroforming component and data of various parameters required for mold design of the component; An initial shape generating unit receiving the tube shape information data and the cylinder capacity information data from the data input unit to generate the initial pressure shape of the cylinder and the accumulator punch for the component, respectively; A division generating unit receiving tube shape information data from the data input unit and dividing and generating three-dimensional solid shapes of the upper and lower inserts of the part; A final cylinder shape generation unit receiving tube shape information data from the data input unit to generate a three-dimensional solid shape of the cylinder; Generating a three-dimensional solid shape of a base plate for fixing the mold made from the part to the press, a wear plate and a flusher plate to allow the upper and lower monoblocks of the part to move and contact; The monoblock shape generation unit receives tube shape information data, cylinder shape information data, and plate shape information data from the data input unit, the final cylinder shape generation unit, and the plate shape generation unit, respectively, to form a three-dimensional solid shape of the upper and lower monoblocks. Generating a; A support shape generation unit receiving shape information data of a cylinder from the final cylinder shape generation unit to generate a three-dimensional solid shape of a support for fixing the cylinder; And generating, by the guide post shape generating unit, the tube shape information data and the mono block shape information data from the data input unit and the mono block shape generating unit, respectively, to generate a three-dimensional solid shape of the guide post of the component. Provided is a tube hydroforming mold design method.

According to one aspect of the present invention, by automatically performing the tube hydroforming mold design work, not only do not need to secure a large number of design personnel, but also easy to perform the work even for beginners who do not have a professional tube hydroforming mold design technology can do.

According to another aspect of the present invention, it is possible to increase the productivity and efficiency of the mold design work by systemizing to prevent in advance data input mistakes that can occur frequently in the tube hydroforming modeling process.

According to another aspect of the present invention, by significantly reducing the time required for complex tube hydroforming mold design work can be carried out quickly, it is possible to secure a large number of new quantities in accordance with the sufficient competitiveness to secure a large economic effect To get it.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention may be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The shape and the size of the elements in the drawings may be exaggerated for clarity and the same elements are denoted by the same reference numerals in the drawings.

1 is a block diagram illustrating a tube hydroforming mold design system and method according to an embodiment of the present invention. Referring to FIG. 1, the tube hydroforming mold design system includes a data input unit 100, an initial shape generation unit 200, a division generation unit 300, a final cylinder shape generation unit 400, and a plate shape generation unit 500. , A monoblock shape generating unit 600, a support shape generating unit 700, and a guide post shape generating unit 800.

The data input unit 100 is inserted into the tube shape information data of the tube hydroforming component (hereinafter referred to as component) and various parameters necessary for the mold design of the component (part thickness, feeding distance, cylinder capacity, upper and lower portions). Data such as the number of piercing cylinders). The tube shape information data includes shape information data indicating the shape of the upper and lower surfaces of the mold made from the part, shape information data indicating the shape and position of the insert, wear plate, flasher plate, and hole of the mold made from the part, and mold made from the part. And shape information data indicating the shape of the cross section indicating the shape and position of the feeding punch. As such, the data input unit 100 receives data necessary for designing the tube hydroforming mold, but the mold designer does not need to input the tube shape information data once, and the data of various parameters are changed. In this case, it can be used by inputting in the dialog input window.

The initial shape generating unit 200 includes a punch shape generating unit for initial pressure and an initial cylinder shape generating unit. The accumulator punch shape generating unit receives shape information data of the tube 10a, which can be variously designed as shown in FIG. 2A, from the data input unit 100, and the bolts 10aa and 10ab as shown in FIG. 2B. Produces the initial shape of the pressure-drilling punch 10 having a tube (10a) is provided, the bolt (10aa, 10ab) provided in the pressure-drilling punch 10 by determining the horizontal and vertical length of the tube (10a) Determine the size and quantity of the. 2C and 2D show a case where one bolt 10aa and two bolts 10aa and 10ab are provided for the case where the tube 10a is circular and elliptical, respectively. After the initial solid shape is generated in the initial shape generating unit 200, the position information of the pressure reduction punch is transmitted to the final cylinder shape generating unit 400. The initial cylinder shape generating unit 400 receives the cylinder capacity information data from the data input unit 100, generates an initial actual shape of the cylinder, and transmits the initial volume shape to the support shape generating unit 700.

The division generating unit 300 receives the tube shape information data from the data input unit 100 and generates the three-dimensional solid shapes of the upper and lower inserts of the part by dividing them. At this time, the height (l, m, n) of each selected portion of the insert 20, as shown in Figure 3 determines the height of the insert top.

The final cylinder shape generating unit 400 receives the tube shape information data indicating the shape and position of the hole from the data input unit 100 to generate a three-dimensional solid shape of the cylinder. The ejector cylinder shape generating unit and the piercing cylinder shape generating unit Include. The mold designer can choose the ejector type or the piercing type. When the ejector type is selected, the ejector cylinder shape generator generates a shape ejector cylinder shape 30a as shown in FIG. 4A or a pin type ejector cylinder shape 30b as shown in FIG. 4B. When the piercing type is selected, the piercing cylinder shape generating unit generates the piercing cylinder shape 40 as shown in FIG. After the cylinder shape including the information about the outer diameter and the height is generated in the final cylinder shape generating unit 400, the shape information data about the outer diameter and the height of the cylinder is transmitted to the monoblock shape generating unit 600.

The plate shape generating unit 500 generates a three-dimensional solid shape of the base plate for fixing the mold made from the part to the press, the wear plate and the flexure plate to allow the movement and contact of the upper and lower monoblocks of the part. The plate shape generating unit 500 generates a three-dimensional solid shape of the base plate by determining the base distance between the monoblock and the base plate, the minimum distance between the press and the base plate, and the width of the press when the bait plate shape is generated. When generating the wear plate and the flexure plate, the number and size of the wear plate and the flexure plate are determined to generate a three-dimensional solid shape.

The monoblock shape generating unit 600 receives tube shape information data, cylinder shape information data, and plate shape information data from the data input unit 100, the final cylinder shape generating unit 400, and the plate shape generating unit 500, respectively. To produce three-dimensional solid shapes of upper and lower monoblocks.

) 및 지지대(60)의 두께(t)에 대한 실린더(60)의 최상부와 지지대(70)의 일측 끝까지의 수평거리(a)의 비율에 따라 실린더(60)를 고정하는 지지대(70)의 3차원 실체 형상을 생성한다. 금형 설계자는 이와 같은 각도 및 비율을 다양하게 설정할 수 있으며, 지지대의 형상은 일 예로 도 6b 및 도 6c에 도시된 바와 같이 설계될 수 있다. 즉, 도 6c에서는 도 6b에서보다 실린더(60)의 길이 방향이 수평 방향과 경사진 각도가 크고, 지지대(70)의 두께에 대한 실린더(60)의 최상부와 지지대(70)의 일측 끝까지의 수평거리의 비율이 더 크다는 것을 알 수 있다. 지지대 형상 생성부(700)에서 생성된 형상정보 데이터는 플레이트 형상 생성부(500)에 전송된다.The support shape generating unit 700 receives the shape information data of the cylinder from the final cylinder shape generating unit 400, and as shown in FIG. 6A, the longitudinal direction of the cylinder 60 is inclined to the horizontal direction and the inclined angle (

And 3 of the support 70 for fixing the cylinder 60 according to the ratio of the horizontal distance a between the top of the cylinder 60 and one end of the support 70 to the thickness t of the support 60. Create a dimensional entity shape. The mold designer may set various angles and ratios, and the shape of the support may be designed as shown in FIGS. 6B and 6C as an example. That is, in FIG. 6C, the inclination angle of the cylinder 60 is greater in the horizontal direction than in FIG. 6B, and the horizontal direction of the top of the cylinder 60 and the one end of the support 70 with respect to the thickness of the support 70 is greater. It can be seen that the ratio of distance is larger. The shape information data generated by the support shape generator 700 is transmitted to the plate shape generator 500.

The guide post shape generating unit 800 receives the tube shape information data and the mono block shape information data from the data input unit 100 and the mono block shape generating unit 600, respectively, to generate a three-dimensional solid shape of the guide post of the component. do. The guide post is for imparting the density of the contact when the upper mold is lowered, and the guide post shape generating unit 800 may arrange the shape of the guide post at an optimal position.

The present invention is not limited by the above-described embodiment and the accompanying drawings. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims, .

1 is a block diagram illustrating a tube hydroforming mold design system and method according to an embodiment of the present invention.

It is a shape of the tube with which the punch for accumulating of this invention is equipped.

It is a perspective view of the pressure accumulator punch of this invention.

Figure 2c is a shape provided with one bolt in the round and oval tube provided in the pressure-punching punch of the present invention.

Figure 2d is a shape provided with two bolts in the round and oval tube provided in the pressure-punching punch of the present invention.

3 is a perspective view of the insert of the present invention.

4A is a perspective view of the shape ejector cylinder shape of the present invention.

4B is a perspective view of the pin ejector cylinder shape of the present invention.

5 is a perspective view of the shape of a piercing cylinder of the present invention.

Figure 6a is a view for explaining a variable that affects the state in which the cylinder is fixed to the support of the present invention.

6B is a front view of the cylinder fixed to the support according to the first embodiment of the present invention.

6C is a front view of the cylinder fixed to the support according to the second embodiment of the present invention.

                 <Explanation of symbols for the main parts of the drawings>

10: accumulator punch 10a: tube

10aa, 10ab: bolt 20: insert

30a: Shape ejector cylinder shape 30b: Pin ejector cylinder shape

40: piercing cylinder shape 60: cylinder

70: support 100: data input unit 200: initial shape generating unit 300: split generating unit 400: final cylinder shape generating unit 500: plate shape generating unit 600: monoblock shape generating unit 700: support shape generating unit

800: guide post shape generating unit

Claims (11)

A data input unit for receiving tube shape information data of a tube hydroforming part and data of various parameters required for mold design of the part; An initial shape generating unit for receiving the tube shape information data and the cylinder capacity information data from the data input unit to generate the initial pressure shape of the cylinder and the pressure accumulation punch of the component, respectively; A division generating unit receiving tube shape information data from the data input unit and dividing and generating three-dimensional solid shapes of the upper and lower inserts of the part; A final cylinder shape generation unit receiving tube shape information data from the data input unit to generate a three-dimensional solid shape of the cylinder; A plate shape generating unit for generating a three-dimensional solid shape of a base plate for fixing a mold made from the part to a press, a wear plate and a flexure plate that allow movement and contact of the upper and lower mold monoblocks of the part; A monoblock which receives the tube shape information data, the cylinder shape information data, and the plate shape information data from the data input unit, the final cylinder shape generating unit, and the plate shape generating unit, respectively, to generate three-dimensional solid shapes of the upper and lower monoblocks. Shape generating unit; A support shape generation unit configured to receive shape information data of a cylinder from the final cylinder shape generation unit and to generate a three-dimensional solid shape of a support fixing the cylinder; And A guide post shape generation unit for receiving the tube shape information data and the mono block shape information data from the data input unit and the mono block shape generation unit, respectively, to generate a three-dimensional solid shape of the guide post of the component; Tube hydroforming mold design system comprising a. The method of claim 1, The tube shape information data, Shape information data representing the shape of the upper and lower surfaces of the mold made from the part; Shape information data indicating the shape and position of the insert, wear plate, flasher plate, and hole of the mold made from the part; And Shape information data indicating a shape of a cross section indicating a shape and a position of a feeding punch of a mold made from the part; Tube hydroforming mold design system comprising a. The method of claim 1, The various parameters are any one of the thickness of the part, the feeding distance, the cylinder capacity, the number of piercing cylinders inserted into the top and bottom of the tube hydroforming mold design system. The method of claim 1, The initial shape generating unit is a tube hydroforming mold design system, characterized in that for determining the size and number of bolts provided in the accumulator punch. The method of claim 4, wherein The initial shape generating unit is a tube hydroforming mold design system, characterized in that for determining the size and the number of bolts provided in the accumulator punch by determining the length of the tube horizontal and vertical. The method of claim 1, The division generating unit determines the height of each of the selected portion of the upper and lower inserts to determine the height of the upper and lower inserts, and then the tube hydroforming mold design system, characterized in that to generate by dividing the three-dimensional solid shape. The method of claim 1, The support shape generating unit generates a three-dimensional solid shape according to an angle in which the longitudinal direction of the cylinder is inclined in a horizontal direction and a ratio of the horizontal distance from the top of the cylinder to one end of the support to the thickness of the support. Tube hydroforming mold design system. The method of claim 1, The plate shape generating unit determines the number and size of the wear plate and the flexure plate tube hydroforming mold design system, characterized in that for generating a three-dimensional solid shape. The method of claim 1, The plate shape generating unit is a tube hydroforming mold design system, characterized in that for generating the three-dimensional solid shape of the base plate according to the length and width of the bottom of the press. 10. The method of claim 9, The plate shape generating unit generates a three-dimensional solid shape of the base plate by determining the base distance between the upper and lower monoblocks and the base plate, the minimum distance between the press and the base plate, and the width of the press. Tube hydroforming mold design system. A data input unit receiving tube shape information data of a tube hydroforming component and data of various parameters required for mold design of the component; An initial shape generating unit receiving the tube shape information data and the cylinder capacity information data from the data input unit to generate an initial solid shape of the accumulator punch and the cylinder, respectively; A division generating unit receiving tube shape information data from the data input unit and dividing and generating three-dimensional solid shapes of the upper and lower inserts of the part; A final cylinder shape generation unit receiving tube shape information data from the data input unit to generate a three-dimensional solid shape of the cylinder; Generating a three-dimensional solid shape of a base plate for fixing the mold made from the part to the press, a wear plate and a flusher plate to allow the upper and lower monoblocks of the part to move and contact; The monoblock shape generation unit receives tube shape information data, cylinder shape information data, and plate shape information data from the data input unit, the final cylinder shape generation unit, and the plate shape generation unit, respectively, to form a three-dimensional solid shape of the upper and lower monoblocks. Generating a; A support shape generation unit receiving shape information data of a cylinder from the final cylinder shape generation unit to generate a three-dimensional solid shape of a support for fixing the cylinder; And A guide post shape generation unit receiving tube shape information data and mono block shape information data from the data input unit and the mono block shape generation unit, respectively, to generate a three-dimensional solid shape of the guide post of the component; Tube hydroforming mold design method comprising a.

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