JP2020124736A - Casting plan design support device and casting plan design support program - Google Patents

Abstract

To develop a casting plan design support device and a casting plan design support program supporting a casting plan with casting-solidification phenomena correctly understood.SOLUTION: A casting plan design support device comprises: a product data acquisition part 1011 for acquiring production data expressing the shape of an object product; a product specific ratio calculation part 1013 for calculating a specific ratio (object product whole modulus) as a ratio between the volume and surface area in the object product based on the production data; and a feeder specific ratio calculation part 1015 for calculating a specific ratio (feeder modulus for the object product) of the feeder in a casting plan for casting the object product using a specific ratio (feeder ratio) of the feeder in a casting plan for casting a certain casting product different from the object product and a specific ratio (object product whole modulus) calculated in the product specific ratio calculation part 1013.SELECTED DRAWING: Figure 4

Description

The present invention relates to a casting plan design support device for supporting the design of a casting plan for casting a target product by replenishing the molten metal with the effect of the riser when the filled melt solidifies, and an information processing device for executing a program. The present invention relates to a casting plan design support program which is executed in a computer and operates the information processing device as the casting plan design support device.

When casting, casting defects may occur due to poor fluidity of the molten metal, inclusion of gas and air, solidification shrinkage of the molten metal, and the like. Further, when the molten metal is solidified, casting strain may occur due to difference in wall thickness. Therefore, for the purpose of obtaining a sound casting free from these defects, a casting plan is designed in advance, including a study of casting methods such as a sprue and feeder.

By the way, although the utilization of CAD, CAM, and casting simulation has advanced to some extent in the casting industry, the utilization of IT has been delayed as a whole. Even in the design of a casting plan, the utilization of IT is limited (see, for example, Patent Documents 1 to 3), and the reality is that it still largely depends on experience and intuition.

JP-A-8-323446 JP, 2000-326051, A JP, 2006-61935, A

In addition, in the current casting method, inefficient feeders are often used because they do not try to understand the casting and solidification phenomena accurately and blindly attach importance to the soundness of the product. To 40%, and as a result, the casting yield shown by product part weight/cast weight becomes too low.

Therefore, there is a need for a casting plan design support tool developed by accurately understanding the casting and solidification phenomena.

In view of the above circumstances, it is an object of the present invention to provide a casting plan design support device and a casting plan design support program developed by accurately understanding the casting and solidification phenomenon.

The first casting plan design support device that solves the above object is
Casting plan design support device that assists the design of a casting plan for replenishing the molten metal and casting the target product by the effect of the riser when the filled molten metal solidifies by using a specific ratio that is the ratio of volume to surface area And
A product data acquisition unit that acquires product data representing the shape of the target product;
A product specific ratio calculation unit that calculates the specific ratio in the target product based on the product data,
In the feeder specific ratio and the product specific ratio calculation unit, which is the ratio of the specific ratio of the feeder and the specific ratio of the certain cast product in a casting method for casting a certain cast product different from the target product. A feeder specific ratio calculating unit for calculating the specific ratio of the feeder in the casting method for casting the target product using the calculated specific ratio is provided.

Conventionally, Kuvolnov's law is known in which, when a molten metal is poured into a mold, the solidification time of the casting is proportional to the square of the ratio of volume to surface area. According to the above-mentioned casting plan design support device, the ratio of the volume to the surface area according to Kuvolnov's law is used as the specific ratio. That is, the specific ratio of the target product is obtained from the product data representing the shape of the target product cast in the product part forming space of the mold. Next, similarly, a feeder ratio which is a ratio of a specific ratio of a feeder for replenishing molten metal to a certain cast product cast in the product part forming space of the mold and a specific ratio of the certain cast product and the target product. The specific ratio is used to calculate the specific ratio of the feeder for supplying molten metal to the target product. If the specific ratio of the feeder for supplying the molten metal to the target product is calculated, the size (volume) of the feeder can be obtained according to the basic shape of the feeder.

In practice, the riser is used after being subjected to a modification of an appropriate shape with respect to the basic shape so that it can be easily used as a mold or casting model. For example, an appropriate draft angle, corner R, corner R, etc. may be provided for the mold release property of the molding, or a conical hole or a V groove may be provided on the top of the feeder to induce shrinkage of the top of the feeder. A score is provided, or part of the shape of the feeder is cut off in relation to the product section, or a surplus is added. In some cases, a rod-shaped portion having a diameter or width smaller than the diameter or width of the feeder may be additionally provided on the basic shape of the feeder in order to apply the molten metal head (melt pressure). However, the basic shape of the feeder is clear from its shape. Therefore, the feeder is used by subjecting the basic shape to such appropriate modification deformation.

According to the first casting plan design support device, a casting plan design support tool developed by accurately understanding the casting and solidification phenomenon by using the ratio of the volume to the surface area according to Kuvolnov's law as a specific ratio. Can be provided.

In the first casting plan design support device,
The feeder may include a feeder information output unit that outputs feeder information relating to the diameter of the spherical feeder from the specified ratio calculated by the feeder specific ratio calculation unit.

The feeder information may be information indicating a diameter or information indicating a radius.

In the first casting plan design support device,
In the casting method for casting the certain casting product, the neck ratio which is the ratio of the specific ratio of the neck portion connected to the certain casting product and the specific ratio of the certain casting product, and the product specific ratio calculation Using the specific ratio calculated in the section, a neck part specific ratio calculation unit for calculating the specific ratio of the neck part connected to the target product in a casting method for casting the target product is provided. May be

The neck portion may be referred to as a weir. That is, the neck portion connected to the target product may be a weir that connects the feeder and the target product, or may be a weir that connects the runner and the target product. The neck portion connected to the certain casting product may be a weir that connects the feeder and the certain casting product, or may be a weir that connects the runner and the certain casting product.

The riser may be provided between the sprue or runner and the neck. Further, the feeder may be a so-called fried feeder.

In the first casting plan design support device,
A neck aspect ratio data acquisition unit that acquires data relating to the aspect ratio of the neck connected to the target product,
A neck portion information output unit may be provided that outputs neck portion information relating to the shape of the neck portion connected to the target product from the specific ratio calculated by the neck portion specific ratio calculation unit.

The neck portion information may be information indicating the height and width of the neck portion.

A second casting plan design support device that solves the above object is
A casting plan design support device that assists the design of a casting plan for replenishing the molten metal and casting the target product by the effect of the riser when the filled molten metal solidifies by using a specific ratio that is the ratio of the volume to the surface area. And
A product data acquisition unit that acquires product data representing the shape of the target product;
Of the target product, a feeder-affected portion designating unit that designates a feeder-affected portion that will be affected by the feeder effect,
A feeder-affected-portion specific ratio calculation unit that calculates the specific ratio in the feeder-affected portion based on the product data;
A feeder ratio which is a ratio of the specific ratio of the feeder and the specific ratio of the certain cast product in a casting method for casting a certain cast product different from the target product, and the feeder specific portion specific ratio. And a feeder specific ratio calculating unit that calculates the specific ratio of the feeder in the casting method for casting the target product using the specific ratio calculated by the calculator.

This second casting plan design support device also uses a casting plan design support tool developed by accurately understanding the casting and solidification phenomenon by using the ratio of the volume to the surface area according to Kuvolnov's law as a specific ratio. Can be provided. Moreover, in the second casting method design support device, not the entire target product but the part affected by the feeder is targeted. When the target product has a plurality of thick portions, each of these thick portions becomes the feeder influence portion, and when it is necessary to provide a feeder to each of the thick portions at a plurality of locations, The second casting plan design support device can design a feeder for each thick portion.

In addition to the thick-walled part, the part affected by the riser can also be regarded as the part to which the molten metal is replenished from the riser, and further outside of that part (opposite to the neck part). It can also be seen as a part including the side).

In the second casting method design support device,
In a casting method for casting a certain casting product, a neck ratio which is a ratio of the specific ratio of the neck portion connected to the certain casting product and the specific ratio of the certain casting product, and the feeder influence portion. Using the specific ratio calculated by the specific ratio calculating unit, a neck portion specific ratio calculating unit for calculating the specific ratio of the neck portion connected to the target product in the casting method for casting the target product is provided. It may be characterized.

The first casting plan design support program that solves the above objective is
It is executed in an information processing device that executes a program, and the information processing device has a volumetric design of a casting method for replenishing the molten metal by the effect of the feeder when the filled molten metal is solidified and casting the target product. A casting plan design support program that operates as a casting plan design support device that supports using a specific ratio that is a ratio with the surface area,
The information processing device,
A product data acquisition unit that acquires product data representing the shape of the target product;
A product specific ratio calculation unit that calculates the specific ratio in the target product based on the product data,
In the feeder specific ratio and the product specific ratio calculation unit, which is the ratio of the specific ratio of the feeder and the specific ratio of the certain cast product in a casting method for casting a certain cast product different from the target product. Using the calculated specific ratio, operating as a casting plan design support device including a feeder specific ratio calculating unit that calculates the specific ratio of the feeder in the casting plan for casting the target product. Characterize.

The second casting plan design support program that solves the above objective is
It is executed in an information processing device that executes a program, and the information processing device has a volumetric design of a casting method for replenishing the molten metal by the effect of the feeder when the filled molten metal is solidified and casting the target product. A casting plan design support program that operates as a casting plan design support device that supports using a specific ratio that is a ratio with the surface area,
The information processing device,
A product data acquisition unit that acquires product data representing the shape of the target product;
Of the target product, a feeder-affected portion designating unit that designates a feeder-affected portion that will be affected by the feeder effect,
A feeder-affected-portion specific ratio calculation unit that calculates the specific ratio in the feeder-affected portion based on the product data;
A feeder ratio which is a ratio of the specific ratio of the feeder and the specific ratio of the certain cast product in a casting method for casting a certain cast product different from the target product, and the feeder specific portion specific ratio. Using the specific ratio calculated by the calculation unit, a casting plan design support device including a feeder specific ratio calculation unit that calculates the specific ratio of the feeder in the casting plan for casting the target product It is characterized in that

It should be noted that a casting plan designed by being supported by the first casting plan design support device, a casting plan designed by being supported by the first casting plan design support program, and a second casting plan design support system by the second casting plan design support device. Both the casting plan designed with assistance and the casting plan supported with the second casting plan design support program may be a sanding die casting plan or a die casting plan. Good. Further, it may be a cast iron casting method or a non-ferrous metal casting method such as an aluminum alloy. Further, it may be a lateral plan casting method in which the relationship between the pouring direction and the direction of the parting plane in the mold is a right angle relationship, or a vertical plan casting method in which the relationship is a parallel relationship. May be.

It is a figure showing one embodiment of a casting plan design support device of the present invention. FIG. 2 is a hardware configuration diagram of the notebook computer, the appearance of which is shown in FIG. 1. It is a schematic diagram which shows the outline|summary of the casting plan design support program equivalent to one Embodiment of this invention. It is a functional block diagram of the casting plan design support apparatus shown in FIG. It is a figure which shows an example of the display screen in the notebook computer in which the casting plan design support program shown in FIG. 3 is installed, and the program is running. It is a figure which shows the casting containing eight pieces which provided eight product parts with respect to one gate. It is a figure for demonstrating the influence range of a feeder. FIG. 6 is a diagram showing a result output screen on which a calculation result using various values input to the setting input screen shown in FIG. 5 is output.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of a casting plan design support device of the present invention.

The casting plan design support device 1 shown in FIG. 1 is configured by a personal computer (hereinafter referred to as a notebook computer) 10 in which the casting plan design support program of the present invention is installed. The notebook computer 10 shown in FIG. 1 corresponds to an example of an information processing apparatus, and has a main body 11 and an image display unit 12 in terms of external configuration. The image display unit 12 is folded so as to cover the upper surface 11a of the main body unit 11. FIG. 1 shows a state in which the image display unit 12 is opened. The image display unit 12 includes a liquid crystal display device that displays an image on the display screen 121 according to an instruction from the main body unit 11. On the upper surface 11a of the main body portion 11, by designating a keyboard 13 for inputting various information according to key operations and an arbitrary position on the display screen 121, a pointer or an icon displayed at that position can be displayed. A pointing device 14 for inputting a corresponding instruction is provided.

A CD/DVD-ROM disc loading port 151 for loading a CD-ROM or a DVD-ROM is provided on the front surface 11b of the main body 11 of the notebook computer 10.

Further, on the left side surface 11c of the main body portion 11, although not visible in FIG. 1, a USB port 1101 (see FIG. 2) conforming to the universal serial bus (hereinafter referred to as USB) standard and a video signal connector are provided. 1111 (see FIG. 2) is provided.

On the other hand, the right side surface 11d of the main body portion 11 is provided with a recording medium insertion port 1081 into which an SD card (registered trademark) (hereinafter referred to as a recording card) is removably inserted. By inserting the recording card 910 into the recording medium insertion port 1081, the data recorded on the recording card 910 can be taken into the notebook computer 10.

Further, the right side surface 11d of the main body portion 11 is provided with a DC power supply connection terminal 156 into which a connector of an AC adapter (not shown) that supplies electric power from a commercial power supply is inserted. It should be noted that the notebook computer 10 shown in FIG. 1 has a battery (not shown) built therein, and the notebook computer 10 can be operated by the battery, but by inserting the connector of the AC adapter into the DC power connection terminal. It operates by the electric power supplied from the commercial power supply.

Further, on the rear surface 11e of the main body portion 11, although not shown, two USB ports 1102 other than the IEEE 1394 port, the RJ45 Ethernet (registered trademark) port, and the USB port 1101 provided on the left side surface 11c are provided. 1103 (see FIG. 2) is provided.

FIG. 2 is a hardware configuration diagram of the notebook computer whose appearance is shown in FIG.

Inside the notebook computer 10 shown in FIG. 1, as shown in FIG. 2, a CPU 101, a RAM 102, a hard disk controller 103, a display controller 104, a keyboard controller 106, a pointing device controller 107, a CD/DVD-ROM driver 108, a recording medium. The driver 109, the USB host controller 110, and various communication boards 111 are mutually connected by the bus 100.

The CPU 101 executes various programs. The hard disk controller 103 accesses the hard disk 1031. The hard disk 1031 stores various programs and data, and the RAM 102 reads the programs and data stored in the hard disk 1031 and expands them for execution by the CPU 101. Windows (registered trademark) of Microsoft Corporation is installed on the hard disk 1031 as an OS (Operating System).

The display controller 104 controls the liquid crystal display device 120 incorporated in the image display unit 12 shown in FIG. The keyboard controller 106 receives an input from the keyboard 13 shown in FIG. 1, and the pointing device controller 107 also receives an input from the pointing device 14 shown in FIG.

The CD/DVD-ROM driver 108 accesses the CD-ROM 911 or the DVD-ROM 912 loaded in the CD/DVD-ROM disc loading port 151. The recording medium driver 109 accesses the recording card 910 inserted in the recording medium insertion port 1081 shown in FIG.

The USB port 1101 provided on the left side surface 11 c of the main body 11 shown in FIG. 1 and the USB ports 1102 and 1103 provided on the rear surface 11 e of the main body 11 are connected to the USB host controller 110. Identification information for identifying the devices is prepared for the USB devices connected to these USB ports 1101, 1102, 1103. When the USB device and the notebook computer 10 are connected, the OS in the notebook computer 10 reads the identification information, searches for an information file corresponding to the identification information, and specifies the device driver (peripheral) specified in the information file. The USB device operates as a peripheral device of the notebook computer 10 by installing and loading the driver software for managing and controlling the device.

A video signal connector 1111, an IEEE 1394 port 1112, and an RJ45 Ethernet (registered trademark) port 1113 are connected to the various communication boards 111.

FIG. 3 is a schematic diagram showing an outline of a casting plan design support program corresponding to one embodiment of the present invention.

The casting plan design support program is stored in a solid-state storage device represented by a DVD-ROM, a CD-ROM, or a USB memory and provided to the user. It may also be provided to the user via a telecommunication network represented by the Internet or LAN.

The casting plan design support program 20 of the present embodiment is created on spreadsheet software (for example, Excel (registered trademark) manufactured by Microsoft Corporation), and includes a product data acquisition unit 21 and a riser-affected part. The specification unit 22, the product specific ratio calculation unit 23, the feeder-affected portion specific ratio calculation unit 24, the feeder specific ratio calculation unit 25, the neck specific ratio calculation unit 26, the feeder information output unit 27, And a neck information output unit 28.

FIG. 4 is a functional block diagram of the casting plan design support device shown in FIG.

The casting plan design support device 1 is a device that supports the design of a casting plan using a modulus by the CPU 101 shown in FIG. 2 reading and executing the installed casting plan design support program 20. The modulus here is a value of a specific ratio, which is a ratio of volume to surface area (hereinafter the same). This casting plan design support device 1 includes a product data acquisition unit 1011, a feeder-influenced portion designating unit 1012, a product specific ratio calculation unit 1013, a feeder-influenced portion specific ratio calculation unit 1014, a feeder specific ratio calculation unit 1015, and a neck unit. The functional configuration of the specific ratio calculation unit 1016, the feeder information output unit 1017, the neck information output unit 1018, and the display unit 1200 is provided. Of these functional configurations, the display unit 1200 is a functional configuration implemented by the liquid crystal display device 120 shown in FIG. 2, and the remaining functional configurations 1011 to 1018 are functional configurations implemented by the CPU 101 shown in FIG. is there. In the functional configurations 1011 to 1018 realized by the CPU 101 and the components 21 to 28 in the casting plan design support program 20 shown in FIG. 3, those having the same names correspond to each other. That is, although the functional configurations 1011 to 1018 realized by the CPU 101 of the casting plan design support device 1 shown in FIG. 4 are a combination of the CPU 101 that is hardware and the software that is the casting plan design support program 20 of FIG. On the other hand, each of the constituent elements 21 to 28 of the casting plan design support program 20 shown in FIG. 3 is composed of only software (application program) of hardware and software. Therefore, in the following, by explaining the functional configurations 1011 to 1018 of the casting plan design support device 1 shown in FIG. 4, the components 21 to 28 of the casting plan design support program 20 shown in FIG. 3 also serve as explanations. To do.

FIG. 5 is a diagram showing an example of a display screen on a notebook computer in which the casting method design support program shown in FIG. 3 is installed and the program is executed.

The display screen shown in FIG. 5 is a setting input screen displayed on the display unit 1200 shown in FIG. In this setting input screen, various values and the like are input, set, designated and selected by using the operating means such as the keyboard 13 and the pointing device 14 shown in FIG. 2, or the hard disk 1031 shown in FIG. It is set by reading from the data recorded in. Further, in the hard disk 1031 shown in FIG. 2, various input values that have been input and calculation results using those input values are recorded as history data with management numbers. The "History reading No." field on the upper left side of this display screen is a field for entering the management number. It is not entered here, but after entering the management number, the "History reading" field beside it. When the cursor is placed on the button 120a and clicked, the history data of the input management number is displayed on this setting input screen. Further, when the cursor is placed on and clicked on the "CSV read" button 120b on the upper right side, a CSV format file is read and displayed as an input value on this setting input screen.

Here, an example of the casting will be described.

FIG. 6 is a view showing an eight-piece casting in which eight product parts are provided for one sprue. FIG. 6A is a plan view, and FIG. 6B is a side view with the product part omitted.

The casting C shown in FIG. 6(a) is provided with eight product parts C4, one runner C2, four feeders C3, and a neck part C5 connecting the feeder C3 and the product part C4. There is. The neck portion C5 may be referred to as a weir. Further, a connecting portion C21 of the sprue (not shown) to the sprue bottom is shown in the central portion in the extending direction of the single runner C2 extending in the left-right direction in the drawing. All of the four feeders C3 shown in FIG. 6(a) are spherical in shape, and two product parts C4 are provided for one feeder C3. The product section C4 corresponds to the target product in the following description. Further, in FIG. 6B, a one-dot chain line is shown so as to pass through the center of the feeder C3 in the height direction. This alternate long and short dash line corresponds to the parting plane of the casting C shown in FIG. The casting C shown in FIG. 6(a) is cast by so-called side-insertion casting.

The feeder C3 may be provided between a gate (not shown) and the neck C5. Further, the feeder C3 may be a so-called fried feeder.

On the setting input screen shown in FIG. 5, a setting area 1201 of “(1) Number of feeders/modulus” is prepared under the “read history” button 120a and the like. The figure is shown. In the setting area 1201 of “(1) Number of feeders/modulus”, a plurality of feeders can be provided for one product part, or different feeders can be provided for each product part. It is possible to input data concerning up to the number of feeders (feeder groups 1 to 10). Here, "1" is entered in the "set number of feeders", only the feeder group 1 can be input, and the feeder groups 2 and after are grayed out and cannot be input. When "2" is entered in the "set number of feeders", only feeder groups 1 and 2 can be entered. The input items such as "type of feeder", "number of products", "neck ratio", and "feed ratio" described below can be input for each feeder group.

If you click the input field of "type of feeder", a pull-down menu is displayed, and you can select either "sphere" or "gate". The "sphere" means that the basic shape of the feeder is a sphere. Note that the feeder is used after being subjected to an appropriate modification and modification of the basic shape so that it can be easily used as a mold or casting model. For example, an appropriate draft angle, corner R, corner R, etc. may be provided for the mold release property of the molding, or a conical hole or a V groove may be provided on the top of the feeder to induce shrinkage of the top of the feeder. A score is provided, or part of the shape of the feeder is cut off in relation to the product section, or a surplus is added. In some cases, a rod-shaped portion having a diameter or width smaller than the diameter or width of the feeder may be additionally provided on the basic shape of the feeder in order to apply the molten metal head (melt pressure). However, the basic shape of the feeder is clear from its shape. Therefore, even if the basic shape of the feeder is a sphere, it can be used after being appropriately modified and deformed. On the other hand, “gate” means that the gate is also used as a feeder without providing a dedicated feeder. A general sprue is composed of an inverted frustoconical sprue cup and a sprue bar located between the sprue cup and the bottom of the sprue. Here, "sphere" is selected.

“Product number” is the number of product parts for one feeder. Here, “2” is set.

The “neck ratio” is the ratio of the modulus of the neck portion provided in a certain cast product (hereinafter referred to as the reference product) different from the target product to the modulus of the reference product (the modulus of the neck portion provided in the reference product. /Modulus of reference product), and set a value based on an empirical rule. The reference products are only those products that do not include feeders, necks or runners. This reference product may be a test product or an actual product that has a production record. The modulus mentioned here is an example of a specific ratio, and is a ratio expressed by volume/surface area (the same applies below). This "neck ratio" can be set at intervals of 0.01 within a numerical range of 0.5 or more and 0.6 or less. Here, “0.55” is set.

The "rise ratio" is the ratio of the modulus of the riser provided to the reference product and the modulus of the reference product (modulus of the riser provided to the reference product/modulus of the reference product), which is an empirical rule. Set the value. Here, "1.2" is set in the "rise ratio". In addition, an initial value may be set in advance for the "feeding ratio", and the initial value may be automatically set, or the initial value may be changeable.

Below the setting area 1201 of “(1) Number of risers/modulus”, a “(2) Product model calculation” area 1202 is prepared. At the top of the “(2) Product model calculation” area 1202, a field for designating the “product STL path” is prepared. A "reference" button 120c is arranged next to this column. When the cursor is placed on this "reference" button 120c and clicked, desired product data, that is, product data of a product part as a target product is recorded. A path on the existing hardware (for example, the hard disk 1031 or the recording card 910 inserted in the recording medium insertion port 1081) can be designated. In this example, the product data is three-dimensional CAD data, which is data representing the shape of the target product. The product data may be two-dimensional CAD data. A "STL display" button 120d is arranged on the right side of the "reference" button 120c. When you place the cursor on this "STL display" button 120d and click it, another window will open, and the product shape of the product data recorded in the specified path will be displayed in 3D or 2D in this window. The shape can be visually confirmed. In addition, a "material" column is provided as a column for selecting the material of the target product. When this column is clicked, a pull-down menu is displayed and a plurality of material symbols are displayed. Here, "FCD450" is selected. Further, at the bottom of the “(2) Product model calculation” area 1202, a field for inputting the “feeding influence range” is provided for each feeder group.

FIG. 7: is a figure for demonstrating the influence range of a riser. In FIG. 7, the horizontal direction of the drawing is the X-axis direction, the vertical direction is the Y-axis direction, and the direction perpendicular to the paper surface is the Z-axis direction.

Here, the design is such that two feeders are provided in one product section C4 corresponding to the target product. The sphere feeder of the feeder group 1 (hereinafter referred to as the first feeder C31) is provided on the left side of the drawing, and the product portion is provided via the neck portion (hereinafter referred to as the first neck portion C51). It is connected to C4. The connection position of the first neck portion C51 to the product portion C4 becomes the start position (hereinafter, referred to as start position 1) of the feeder effect by the first feeder C31. The extent to which the feeder effect of the first feeder C31 should be extended from this start position 1 is examined, and the end position of the feeder effect (hereinafter referred to as end position 1) is set. Regardless of whether the position is the start position 1 or the end position 1, the position is set by inputting each value of the X coordinate, the Y coordinate, and the Z coordinate. In the feeder group 1 shown in FIG. 7, when one point is input as the end position 1, the shortest line segment connecting the end position 1 to the start position 1 is determined (see arrow a1 in the figure). The straight line L1 orthogonal to the line segment is the outline of the feeder influence area. On the other hand, the sphere feeder of the feeder group 2 (hereinafter referred to as the second feeder C32) is provided diagonally below and to the right of the drawing, and via the neck portion (hereinafter referred to as the second neck portion C52). Connected to the product section C4. The connection point of the second neck portion C52 to the product portion C4 is the start position of the feeder effect by the second feeder C32, that is, the start position 2. The extent to which the feeder effect of the second feeder C32 should be extended from this start position 2 is examined, and the end position of the feeder effect (hereinafter referred to as end position 2) is set. Also here, the start position 2 and the end position 2 are set by inputting the respective values of the X coordinate, the Y coordinate, and the Z coordinate. Also in the feeder group 2 shown in FIG. 7, when one point is input as the end position 2, the shortest line segment connecting the end position 2 to the start position 2 is determined (see arrow a2 in the figure). The straight line L2 orthogonal to the line segment is the outline of the feeder influence area.

For example, if the target product has thick parts with different sizes at multiple locations and it is necessary to provide one feeder for each of these multiple thick parts, press the thick parts at multiple locations. It can be specified separately as the hot water influence range, and the feeder can be designed for each thick part.

Further, at the start position and the end position of the "feeding influencing range", it is possible to leave blank without inputting any value of X coordinate, Y coordinate and Z coordinate. In such a case, the feeder effect is set to cover the entire range of the product section C4. The start position and the end position of the “feeding influence range” of the feeder group 1 in the “(2) product model calculation” area 1202 shown in FIG. 5 are left blank.

After the settings and designations in the fields in the “(2) Product model calculation” area 1202 shown in FIG. 5 are completed, the cursor is moved to the “(2) Calculation” button 120 e provided in the “(2) Product model calculation” area 1202. 2 and then click, the CPU 101 shown in FIG. 2 reads out the product data recorded in the designated path. The CPU 101 that reads this product data corresponds to an example of the product data acquisition unit 1011 shown in FIG.

FIG. 8 is a diagram showing a result output screen on which a calculation result using various values input to the setting input screen shown in FIG. 5 is output. The setting input screen shown in FIG. 5 and the result output screen shown in FIG. 8 are switched by placing the cursor on the sheet tabs STi and STo displayed at the bottom of the display screen and clicking. Further, a display such as "Return to setting screen" is displayed above the result output screen shown in FIG. 8. When the cursor is placed on this display and clicked, the screen returns to the setting input screen shown in FIG.

In the result output screen shown in FIG. 8, the calculation result is displayed for each feeder group except for the area 1215 of “gate”. The "Product" area 1211 at the top is the calculation result for the product of the product data recorded in the specified path, and is the result display for the target product.

As described above, when the start position and the end position of the “feeding influence range” in the “(2) product model calculation” area 1202 shown in FIG. 5 are blank, the entire product section is targeted. In this case, the CPU 101 calculates the volume and surface area of the entire product part, that is, the entire target product from the read product data. The calculated volume value of the entire target product is output to the “Volume” column in the “Product” area 1211 of the result output screen shown in FIG. 8, and the surface area value of the entire target product is the “Product” area. It is output to the “surface area” column in 1211. Further, the CPU 101 calculates the modulus of the entire target product (total modulus of the target product) using the value of the volume and the value of the surface area. The CPU 101 that calculates the modulus of the entire target product corresponds to an example of the product specific ratio calculation unit 1013 illustrated in FIG. The modulus of the entire target product is displayed in the "modulus" column in the "product" area 1211 shown in FIG. In addition, the CPU 101 also calculates the weight of the entire target product based on the product data and the material, and the calculated weight is output to the “weight” column in the “product” area 1211 shown in FIG.

On the other hand, when values are entered at the start position and end position of the "feeding influence range", the value of the start position and the value of the end position correspond to an example of range designation data, and not the entire product section. Partly covered. The CPU 101 calculates the feeder influence range in the product part, that is, the feeder influence range in the target product from the input values of the start position and the end position, and specifies the feeder influence range. Therefore, the CPU 101 corresponds to an example of the feeder-affected portion designating unit 1012 shown in FIG. Further, the CPU 101 calculates the volume of the designated feeder influence range from the product data, and outputs the calculated value to the “volume” column in the “product” area 1211 of the result output screen shown in FIG. The surface area of the feeder influence area is also calculated from the product data, and the calculated value is output to the "surface area" column in the "product" area 1211 of the result output screen shown in FIG. In addition, the CPU 101 uses the value of the volume and the value of the surface area to calculate the modulus of the feeder influence range (target product partial modulus) designated in the target product. The CPU 101 that calculates the modulus of the feeder influence area corresponds to an example of the feeder influence portion specific ratio calculation unit 1014 shown in FIG. The modulus of the feeder influence area is displayed in the "modulus" column in the "product" area 1211 shown in FIG. Further, the CPU 101 calculates the weight of the designated feeder influence range using the product data and the material, and the calculated weight is output to the “weight” column in the “product” area 1211 shown in FIG. It

The method of designating the feeder influence area is not limited to the method described here. For example, by displaying the product shape in a three-dimensional or two-dimensional manner and enclosing the portion of the displayed product shape that is desired to be designated as the feeder influence area with the cursor, the feeder influence area of the target product can be designated. You may do it. In this way, it is also possible to use the display of the product shape that is displayed in another window when the cursor is placed on the "display STL" button 120d and clicked. Even in this case, the CPU 101 calculates the feeder influence area in the actual target product based on the area surrounded by the cursor on the screen, and specifies the feeder influence area.

Further, the CPU 101 shown in FIG. 2 performs a calculation regarding the feeder for each feeder group. First, the modulus of the target product (the entire target product calculated in the “supply ratio” input in the setting area 1201 of “(1) number of feeders/modulus” and the “modulus” in the area 1211 of “product” (entire target product) Modulus or target product partial modulus) is used to calculate the modulus of the feeder for the target product. That is, the formula of “the feeder's modulus for the target product”=“the modulus of the target product”דthe feeder ratio” holds, and from this formula, the CPU 101 determines “the modulus of the feeder for the target product” (the target product pusher). Calculate the hot water modulus). The CPU 101 that calculates the “modulus of feeder for the target product” corresponds to an example of the feeder specific ratio calculation unit 1015 shown in FIG. The casting plan design support device 1 shown in FIG. 4 and the casting plan design support program 20 shown in FIG. 3 use the modulus, which is the ratio of the volume to the surface area according to Kuvolnov's law, to obtain the modulus value of the target product as product data After accurately calculating from the above formula, the “modulus of the feeder for the target product” is calculated from the above formula. Therefore, while using the empirical value of the “feeding ratio”, understand the casting and solidification phenomenon accurately. It can be said that it is a casting plan design support tool developed by In other words, the casting plan design support device 1 shown in FIG. 4 and the casting plan design support program 20 shown in FIG. 3 are tools that support the design of the casting plan by using the objective modulus while also utilizing the empirical rule. ..

The value of the "modulus of feeder for the target product" calculated in this way is output to the column of "calculated modulus" in the area 1214 of "feeder" shown in FIG. Further, “the modulus of the feeder for the target product” is the volume/surface area, and when the type of feeder is “sphere” in the setting area 1201 of “(1) Number of feeders/modulus”, this volume/surface area The surface area can be used to calculate the diameter of the riser of the sphere. The information on the type of feeder selected in the setting area 1201 of “(1) Number of feeders/modulus” corresponds to the basic shape information of the feeder. The CPU 101 calculates the diameter of the feeder and outputs the calculated value to the “diameter” column in the “feeding” area 1214 shown in FIG. The CPU 101 that calculates and outputs the diameter of the feeder is equivalent to an example of the feeder information output unit 1017 shown in FIG. 4, and the calculated value of the diameter of the feeder is an example of feeder information.

The CPU 101 also calculates the weight of the feeder from the material selected in the “(1) Number of feeders/modulus” setting area 1201 and the calculated diameter, and the calculated weight is shown in FIG. It is output to the “weight” column in the “hot water” area 1214.

Even when the type of feeder is "gate", if the ratio of the gate cup and the gate bar is determined and the shape of the inverted frustoconical gate cup is unified to be similar to each other. , Using the volume/surface area that is the modulus of the riser, the diameter of the larger (receptacle side, that is, the inlet side) of the inverted frustoconical sprue cup and the diameter of the smaller side (exit side that leads to the runner) , The height can be calculated.

Further, the type of feeder is not limited to the sphere and the sprue, and may have various basic shapes. For example, it may be a sphere other than a true sphere (ellipsoid, etc.) or a cylinder. The columnar body referred to herein may have a shape having a draft. Further, it may have a basic shape in which a columnar body is sandwiched from the height direction while the sphere is halved. That is, the spout has a first hemisphere portion on the receiving side, a second hemisphere portion on the side opposite to the first hemisphere portion, and a columnar portion provided between the first hemisphere portion and the second hemisphere portion. Good. Furthermore, the columnar body or the columnar portion is not limited to the one whose cross-sectional shape along the direction orthogonal to the height direction is a perfect circle. If the basic shape of the feeder is similar and similar, the volume/surface area, which is the modulus of the feeder, may be used to calculate the diameter or height of the feeder.

In the setting input screen shown in FIG. 5, a “(3) Product estimation calculation (solidification or casting)” area 1203 is prepared below the “(2) Product model calculation” area 1202. At the top of the “(3) Product estimation calculation (solidification or casting)” area 1203, there is a column for selecting the “calculation method”. When this column is clicked, a pull-down menu is displayed and the Kuvolinoff It is possible to select either one of the following. The “set value” column will be described later, and the material of the target product selected in the “product model calculation” area 1220 is automatically entered in the “material” column. Further, the respective data of “density”, “specific heat”, “thermal conductivity”, and “Kvorinov constant” below that are automatically input as data corresponding to the material. Also, on the right side of it, H. W. In the Diettert's formula, the "determination constant" determined by the degree of wall thickness is shown. These “density”, “Kubolnov constant”, “detert constant”, etc. are recorded in advance on the hard disk 1031 shown in FIG. In the "Set value" field, enter the constant displayed in "Kubolinov constant" when Kuvolnov is selected, and from the displayed "Dithert constant" when the detail is selected. , Enter the "determination constant" selected according to the wall thickness of the target product. In this case, "Detert" is selected, and "2.24" which is a constant of constant when the wall thickness is thicker than 8.0 mm is input as the set value.

When Kuvolnov is selected and the cursor is clicked on the "(3) Calculation" button 120f provided in the "(3) Product estimation calculation (solidification or casting)" area 1203, the CPU 101 shown in FIG. Then, the solidification time (second) of the target product is calculated by multiplying the squared value of the modulus of the target product by the Kuvolnov constant. The calculated solidification time is shown in FIG. 8 as “product estimated time (solidification or casting)”. Is output to the area 1212. On the other hand, when the detail is selected, the cursor is moved to the “(3) Calculation” button 120f and clicked, and the CPU 101 causes the H.264. W. According to the Diettert's formula, the square root of the weight (kg) of the target product is multiplied by the Dertart constant to calculate the casting time (seconds), and the calculated casting time is shown in FIG. It is output to the area 1212 of "casting)".

In the setting input screen shown in FIG. 5, a “(4) Neck calculation” area 1204 is prepared under the “(3) Product estimation calculation (solidification or casting)” area 1203, and the neck part of the neck portion is provided at the left end. Explanatory diagrams are shown. In the "(4) neck calculation" area 1204, various values regarding the neck portion connected to the feeder are input for each feeder group. As various values, "length" that specifies the length of the neck portion, "height ratio" and "width ratio" that specify the aspect ratio of the neck portion are prepared.

After the input to the “length” column, the “height ratio” column, and the “width ratio” column in the “(4) neck calculation” area 1204 is completed, the “(4) neck calculation” area 1204 is provided. When the cursor is placed on and clicked on the "(4) Calculation" button 120g, the CPU 101 shown in FIG. 2 calculates the neck portion for each feeder group based on the value input in each column. First, the “neck ratio” input in the setting area 1201 of “(1) number of risers/modulus” and the modulus of the target product calculated in the “modulus” column in the area 1211 of “product” (total modulus of target product) Alternatively, the target product partial modulus) is used to calculate the modulus of the neck portion connected to the target product. That is, the formula of “modulus of neck part connected to target product”=“modulus of target product”דneck ratio” holds, and from this formula, the CPU 101 determines “modulus of neck part connected to target product” (target Calculate the product neck modulus). The CPU 101 that calculates the “modulus of the neck portion connected to the target product” corresponds to an example of the neck portion specific ratio calculation unit 1016 illustrated in FIG. 4. The casting plan design support device 1 shown in FIG. 4 and the casting plan design support program 20 shown in FIG. 3 use the modulus, which is the ratio of the volume to the surface area according to Kuvolnov's law, to determine the value of the modulus of the target product as product data. Since the "modulus of the neck part connected to the target product" is also calculated from the above formula after accurately calculating from the above formula, the casting/solidification phenomenon can be calculated using the empirical value of the "neck ratio". It can be said that it is a casting plan design support tool developed with an accurate understanding.

The value of the “modulus of the neck portion connected to the target product” calculated in this way is output to the “calculated modulus” column in the “neck” area 1213 shown in FIG. Furthermore, since the “modulus of the neck portion connected to the target product” is the volume/surface area, the CPU 101 uses this volume/surface area to set the length and height set in the “(4) Neck calculation” area 1204. The width, height, and weight of the neck portion connected to the target product are calculated from the height ratio and the width ratio, and these values are output to each column in the “neck” region 1213 shown in FIG. The height ratio and the width ratio set in the “(4) Neck calculation” area 1204 correspond to the neck basic shape information. Further, the CPU 101 that calculates and outputs the width and height of the neck portion connected to the target product corresponds to an example of the neck portion information output unit 1018 illustrated in FIG. 4, and calculates the calculated width and height of the neck portion. Each value corresponds to an example of neck portion information.

In the setting input screen shown in FIG. 5, a “(5) gate calculation” area 1205 is prepared below the “(4) neck calculation” area 1204, and an explanatory view of the gate is shown at the left end. .. At the top of the “(5) Gate calculation” area 1205, there is a column for selecting the “calculation method”. When this column is clicked, a pull-down menu is displayed, and STL calculation and dimension input calculation are performed. Either of these can be selected. Here, the STL calculation is selected, and the fields other than the field for designating the "gate STL path" are grayed out and cannot be input. On the other hand, when the dimension input calculation is selected, the field for specifying the "gate STL path" is grayed out and cannot be entered, and the "diameter" field for entering the diameter of the gate and "height for entering the height of the gate" Field becomes available for input. Values are directly input in the "diameter" column and the "height" column. A "reference" button 120h is provided on the right side of the field for designating the "gate STL path". When the cursor is clicked on the "reference" button 120h and clicked, the desired gate data is recorded in the hardware. The path on the wear (for example, the hard disk 1031 or the recording card 910 inserted in the recording medium insertion port 1081) can be designated. In this example, the sprue data corresponds to the three-dimensional CAD data, and is data representing the shape of the sprue.

When STL calculation is selected, the cursor is moved to the “(5) Calculation” button 120i provided in the “(5) Gate calculation” area 1205 and clicked, and the CPU 101 shown in FIG. And the height are calculated, and these values are output to each column in the “gate” area 1215 shown in FIG. On the other hand, when the size input calculation is selected, the cursor is moved to the “(5) calculation” button 120i and clicked, the CPU 101 calculates the volume and weight of the gate, and these values are the values of the “gate” shown in FIG. It is output in the “volume” and “weight” columns in the area 1215.

In the setting input screen shown in FIG. 5, a “(6) Runway calculation” area 1206 is prepared below the “(5) Gate calculation” area 1205, that is, at the bottom. At the top of the “(6) Runway calculation” area 1206, there is a column for setting “upper die height”, which is set when calculating the effective sprue height. However, since it is the same as the height of the gate calculation, if a value is output in the “height” column in the “gate” area 1215 shown in FIG. 8, that value is automatically input and displayed. Below that, there are provided a column of "upper height of casting parting surface" and a column of "lower height of casting parting surface", and upper and lower heights of the casting parting surface are set. Further, a field for inputting "α-Runner" is also provided. α-Runner is a correction coefficient called a flow coefficient Cd, which is required in the calculation formula for obtaining the cross-sectional area of the sprue. Further, a "runner width" column and a "runner length" column are provided for each feeder group, and the runner width and length are set respectively.

When the setting of each column in the "(6) Runway calculation" area 1206 is completed and the cursor is clicked on the "(6) Calculation" button 120j provided in the "(6) Runway calculation" area 1206, The “effective gate height” column, the “width” column, and the “length” column in the “runner” area 1216 shown in FIG. 6 are set in the “(6) runner calculation” area 1206. The value is displayed. Further, the CPU 101 calculates the cross-sectional area of the gate using the upper and lower heights of the casting parting plane, the correction coefficient of α-Runner, etc., which are set in the “(6) Runway calculation” area 1206. The calculation result is output to the column of "cross section of sprue" in the area 1216 of "runner" shown in FIG. The CPU 101 also calculates the height from the cross-sectional area of the sprue, and outputs the calculation result to the “height” column in the area 1216 of the “runner” shown in FIG. Further, the CPU 101 calculates the modulus (volume/surface area) of the sprue using the height, width, and length of the sprue, and calculates it in the “Modulus” column in the “runner” area 1216 shown in FIG. Output the result.

At the bottom of the result output screen shown in FIG. 8, there is a "consider result" button 120l. When the cursor is placed on this "consider result" button 120l and clicked, the entire display screen is a separate screen. Switch to the consideration screen. On the result consideration screen, the result is considered, the thoughts before and after the correction of the casting plan are recorded, and the management number is added and registered as history data. By registering as history data, the past correction history can be referred to later. As described above, for this history data, enter the management number in the “History reading No” field prepared at the top of the setting input screen shown in FIG. 5, place the cursor on the “History reading” button 120a, and click. It can be read out.

The casting plan design support device 1 shown in FIG. 4 and the casting plan design support program 20 shown in FIG. 3 can calculate the solidification time and the casting time of the target product (product part). The solidification time and pouring time of the entire casting including the sprue, runner, feeder, and neck may be calculated. Further, the solidification time and the pouring time of the sprue, riser, neck part, and product part excluding the runner may be calculated.

Furthermore, when calculating the "modulus of feeder for target product", "modulus of feeder for target product" = modulus of target product x "product ratio" x "rise ratio", such as "product ratio" May be used. In addition, when calculating the “modulus of the neck part connected to the target product”, similarly, “modulus of the neck part connected to the target product”=modulus of the target productדproduct ratio”דneck ratio” Alternatively, a "product ratio" may be used. The “product ratio” mentioned here is for adjusting the modulus of the target product when a large number of products are loaded, and is a value based on an empirical rule. For example, there is an empirical rule that it is necessary to make the feeder larger when using one feeder for a plurality of product parts than when using one feeder for one product part. The "product ratio" is usually set to a value of "1", and when a large number of pieces are loaded, the "product ratio" can be changed without changing the value of the "feeding ratio". You may be able to.

The above-described casting plan designed by being supported by the casting plan design support device 1 shown in FIG. 4 and the casting plan design support program 20 shown in FIG. 3 may be a casting plan in a sand mold or a casting in a mold. It may be a plan. Further, it may be a cast iron casting method or a non-ferrous metal casting method such as an aluminum alloy. Further, it may be a lateral plan casting method in which the relationship between the pouring direction and the direction of the parting plane in the mold is a right angle relationship, or a vertical plan casting method in which the relationship is a parallel relationship. May be.

In the present embodiment, the notebook computer shown in FIG. 1 is used as the casting plan design support device. However, the casting plan design support program shown in FIG. 3 is installed in the server and is operated on the cloud. Good.

1 Casting plan design support device 10 Notebook computer 101 CPU
120 liquid crystal display device 121 display screen 1031 hard disk 13 keyboard 14 pointing device 1011 product data acquisition unit 1012 riser influence part designation unit 1013 product specific ratio calculation unit 1014 riser influence part specified ratio calculation unit 1015 riser specific ratio calculation unit 1016 neck Part specific ratio calculation unit 1017 feeder information output unit 1018 neck information output unit 20 casting plan design support program 21 product data acquisition unit 22 feeder influence portion specification unit 23 product identification ratio calculation unit 24 feeder influence portion specification ratio calculation unit 25 riser specific ratio calculation unit 26 neck specific ratio calculation unit 27 riser information output unit 28 neck information output unit C3 riser C31 first riser C32 second riser C4 product part C5 neck part C51 first neck part C52 Second neck part

Claims (8)

A casting plan design support device that assists the design of a casting plan for replenishing the molten metal and casting the target product by the effect of the riser when the filled molten metal solidifies by using a specific ratio that is the ratio of the volume to the surface area. And
A product data acquisition unit that acquires product data representing the shape of the target product;
A product specific ratio calculation unit that calculates the specific ratio in the target product based on the product data,
In the feeder ratio and the product specific ratio calculation unit, which is the ratio of the specific ratio of the feeder and the specific ratio of the certain casting product in the casting method for casting a certain casting product different from the target product. A casting plan design support device comprising: a feeder specific ratio calculating unit that calculates the specific ratio of the feeder in a casting plan for casting the target product by using the calculated specific ratio. .. The casting plan according to claim 1, further comprising a feeder information output unit that outputs feeder information relating to the diameter of the spherical feeder from the specified ratio calculated by the feeder specific ratio calculation unit. Design support device. In the casting method for casting the certain casting product, the neck ratio which is the ratio of the specific ratio of the neck portion connected to the certain casting product and the specific ratio of the certain casting product, and the product specific ratio calculation Using the specific ratio calculated in the section, a neck part specific ratio calculation unit for calculating the specific ratio of the neck part connected to the target product in a casting method for casting the target product is provided. The casting plan design support device according to claim 1 or 2. A neck aspect ratio data acquisition unit that acquires data relating to the aspect ratio of the neck connected to the target product,
The neck part information output part which outputs the neck part information regarding the shape of the said neck part connected to the said target product from the said specific ratio calculated by the said neck part specific ratio calculation part was provided. The described casting plan design support device. Casting plan design support device that assists the design of a casting plan for replenishing the molten metal and casting the target product by the effect of the riser when the filled molten metal solidifies by using a specific ratio that is the ratio of volume to surface area And
A product data acquisition unit that acquires product data representing the shape of the target product;
Of the target product, a feeder-affected portion designating unit that designates a feeder-affected portion that will be affected by the feeder effect,
A feeder-affected-portion specific ratio calculation unit that calculates the specific ratio in the feeder-affected portion based on the product data;
A feeder ratio which is a ratio of the specific ratio of the feeder and the specific ratio of the certain cast product in a casting method for casting a certain cast product different from the target product, and the feeder specific portion specific ratio. Using the specific ratio calculated by the calculation unit, a casting plan specific ratio calculation unit for calculating the specific ratio of the feeder in the casting plan for casting the target product Design support device. In a casting method for casting a certain casting product, a neck ratio which is a ratio of the specific ratio of the neck portion connected to the certain casting product and the specific ratio of the certain casting product, and the feeder influence portion. Using the specific ratio calculated by the specific ratio calculating unit, a neck portion specific ratio calculating unit for calculating the specific ratio of the neck portion connected to the target product in the casting method for casting the target product is provided. The casting plan design support device according to claim 5, wherein It is executed in an information processing device that executes a program, and the information processing device has a volumetric design of a casting method for replenishing the molten metal by the effect of the feeder when the filled molten metal is solidified and casting the target product. A casting plan design support program that operates as a casting plan design support device that supports using a specific ratio that is a ratio with the surface area,
The information processing device,
A product data acquisition unit that acquires product data representing the shape of the target product;
A product specific ratio calculation unit that calculates the specific ratio in the target product based on the product data,
In the feeder specific ratio and the product specific ratio calculation unit, which is the ratio of the specific ratio of the feeder and the specific ratio of the certain cast product in a casting method for casting a certain cast product different from the target product. Using the calculated specific ratio, operating as a casting plan design support device including a feeder specific ratio calculating unit that calculates the specific ratio of the feeder in the casting plan for casting the target product. Characteristic casting plan design support program. It is executed in an information processing device that executes a program, and the information processing device has a volumetric design of a casting method for replenishing the molten metal by the effect of the feeder when the filled molten metal is solidified and casting the target product. A casting plan design support program that operates as a casting plan design support device that supports using a specific ratio that is a ratio with the surface area,
The information processing device,
A product data acquisition unit that acquires product data representing the shape of the target product;
Of the target product, a feeder-affected portion designating unit that designates a feeder-affected portion that will be affected by the feeder effect,
A feeder-affected-portion specific ratio calculation unit that calculates the specific ratio in the feeder-affected portion based on the product data;
A feeder ratio which is a ratio of the specific ratio of the feeder and the specific ratio of the certain cast product in a casting method for casting a certain cast product different from the target product, and the feeder specific portion specific ratio. Using the specific ratio calculated by the calculation unit, a casting plan design support device including a feeder specific ratio calculation unit that calculates the specific ratio of the feeder in the casting plan for casting the target product A casting plan design support program characterized by: