JP2004062436A - Graphic processor and its method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a graphic processor and graphic processing method for improving usability in the plotting of gear graphics by three-dimensional CAD and to provide a program . <P>SOLUTION: The graphic processor is composed of a computer provided with a bus 1, a central processing unit (CPU) 2, a read-only memory (ROM) 3, a random access memory (RAM) 4, an input interface 5, an output interface 7, and an external storage device interface 9 to display a picture displaying various contents for changing the plotting state of gear graphics and to allow a user to select a required plotting state by keyboard input or mouse click. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a graphic processing apparatus and method for handling a three-dimensional graphic including gears, and a program.
[0002]
[Prior art]
2. Description of the Related Art With the recent improvement in the performance of computers, which are graphic processing apparatuses, the transition from two-dimensional CAD to three-dimensional CAD of Computer Aided Design (CAD) used in machine design work is rapidly progressing.
[0003]
In the conventional two-dimensional CAD, notation based on JIS drafting standards is used for figures of involute gears frequently used as mechanical element parts. For example, a tooth tip circle is a solid line, a pitch circle is a dash-dot line, The root circle was drawn as a solid line, a thin line, or omitted. As long as the gear figure is drawn in accordance with the JIS drafting standard in this way, any person who has knowledge of the JIS drafting standard can add the tip circle even if the gear figure is not drawn as it is on CAD. I was able to understand information about gears such as pitch and circle. Therefore, it is not necessary to draw the gear figure as it is, and drawing a circular arc with a line type based on the JIS drafting standard did not hinder the design work.
[0004]
On the other hand, in three-dimensional CAD, which has been widely used in recent years, there is no particular standard. Therefore, a gear figure is drawn by a user's judgment on a cylindrical surface or as a real gear shape. However, when a gear figure is drawn on a cylindrical surface, there is a problem that only the person who draws can determine whether the cylinder represents a tooth tip circle or a pitch circle. In actual machine design work, it is customary for a plurality of designers to jointly design one machine, and often it is necessary to design their own parts while referring to parts such as gear figures drawn by others. Occurs. For this reason, it is extremely important information whether the cylindrical surface represents the addendum circle or the pitch circle, and it is a major problem that it cannot be determined.
[0005]
In conventional two-dimensional CAD, gears are drawn based on the JIS drafting standard, so there is no such problem. However, in three-dimensional CAD, it is difficult to draw virtual lines having no substance such as center lines and pitch lines. This was a problem unique to three-dimensional CAD. In order to avoid this problem, a method of defining a rule such that a gear figure is always drawn with a tip circle can be considered.
[0006]
However, when a rule of drawing a gear figure with a cylindrical surface indicating a tooth tip circle is determined and operated, there is a problem that, for example, a pitch circle and a root circle cannot be referred to. In actual machine design work, work such as examining the positions of gears that mesh with each other by referring to pitch circles and root circles while securing clearance with other parts by referring to the addendum circle frequently occurs. . Therefore, a significant problem is that the drawing is performed only in one of the shape of the addendum circle, the pitch circle, and the bottom circle. This problem is peculiar to three-dimensional CAD, as described above. To avoid this problem, for example, a method of drawing a gear shape as a substance and displaying a tip circle and a bottom circle simultaneously can be considered. .
[0007]
[Problems to be solved by the invention]
However, in the operation method of the above-described three-dimensional CAD, when the gear figure is drawn in the gear shape as it is, the number of faces is greatly increased as compared with the case where the gear figure is drawn on a cylindrical surface, and the load of data processing is increased. There is a problem that the calculation speed and the drawing speed decrease. For example, when the gear figure is displayed as it is, the number of faces per tooth is four, which is four times the number of teeth. Although the processing capability of a recent graphic processing apparatus, that is, a computer, has been improved, such an increase in the number of graphics planes greatly affects the calculation speed and drawing speed.
[0008]
In actual design work, it is general that the shape of a part is embodied as the design progresses from concept design to detailed design. For example, in the case of designing a drive system having a gear train, at the concept design stage, the gear size such as the module, the number of teeth, the torsion angle, the shift coefficient (or shift amount), etc. is not determined, and the approximate size and position are indicated. It is sufficient to draw an arc, and in many cases, the gears will gradually materialize as the design progresses from concept design to detailed design.
[0009]
In the conventional two-dimensional CAD, since the involute gear was drawn as described above, it was possible to shift to the detailed design by modifying the line type of the arc drawn in the conceptual design or adding a concentric circle. However, in the three-dimensional CAD, the gear shape must be drawn by inputting gear specifications such as a module, the number of teeth, a torsion angle, and a dislocation coefficient (or dislocation amount) at a conceptual stage. In this case, there is a problem in that the efficiency of the design tasks is reduced because the gear items which may be changed many times as the detailed design advances must be input each time.
[0010]
When a gear is drawn on a cylindrical surface, the same processing as that performed on a general cylindrical surface can be performed on a cylindrical surface representing a gear. However, for example, if the radius of the cylindrical surface is changed, there is a problem that a mismatch of the stored gear information is required.
[0011]
The present invention has been made to solve the above problems, and has a graphic processing apparatus capable of adding an effective function to a drawing process of a gear figure by three-dimensional CAD and improving usability in a drawing process of a gear figure. And a method, and a program.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, a graphic processing apparatus according to claim 1, comprising: a display means for displaying a three-dimensional graphic composed of a plurality of graphic elements; and a storage means for storing graphic information of the three-dimensional graphic. A gear drawing means for drawing the three-dimensional figure of the gear on the display means in a predetermined drawing state based on the figure information of the gear among the stored graphic information of the three-dimensional figure; and a gear drawn on the display means Gear drawing state changing means for changing the drawing state of the three-dimensional figure.
[0013]
According to a second aspect of the present invention, there is provided the graphic processing apparatus according to the first aspect, further comprising a gear drawing state notifying unit configured to notify a user of a drawing state of the three-dimensional figure of the gear drawn on the display unit. I do.
[0014]
The graphic processing device according to claim 3 is the graphic processing device according to claim 1 or 2, wherein the gear drawing means draws a three-dimensional figure of the gear in a cylindrical shape or a real gear shape. .
[0015]
A graphic processing device according to a fourth aspect of the present invention is the graphic processing device according to any one of the first to third aspects, wherein the graphic information of the gear includes at least two items of a module and a number of teeth of the gear. It is characterized by comprising eye information.
[0016]
According to a fifth aspect of the present invention, in the graphic processing apparatus according to the fourth aspect, the gear drawing unit displays the drawn three-dimensional figure of the gear in a predetermined drawing state by referring to the gear essential point information. The gear is drawn, and the gear drawing state changing means changes the drawing state of the drawn gear three-dimensional figure.
[0017]
A graphic processing device according to claim 6, wherein in the graphic processing device according to any one of claims 1 to 5, the gear drawing state changing means draws a cylinder having a radius equal to the radius of the addendum circle. Draw with a cylinder whose radius is the root circle radius, draw with a cylinder whose radius is the reference pitch circle radius, draw with a cylinder whose radius is the meshing pitch circle radius, radius of the reference pitch radius + dislocation amount The drawing state is changed to at least one of a drawing state using a cylinder and a drawing state using a gear shape as a substance.
[0018]
7. The graphic processing device according to claim 7, wherein the input means for inputting the graphic information and the cylindrical three-dimensional graphic prepared in advance are transmitted to the gear processing device according to any one of claims 4 to 6. A gear generating means for converting a part of the key information into a three-dimensional figure of the gear based on the input gear key information is provided.
[0019]
9. The graphic processing device according to claim 8, further comprising: an editing unit configured to edit a three-dimensional graphic of the drawn gear, wherein the gear drawing state notifying unit is provided. Determines whether the editing of the drawn three-dimensional figure of the gear affects the gear points of the gear, and when the gear point affects the gear points, suspends the editing, and determines whether It is characterized in that the user is notified to edit by changing or inputting the value.
[0020]
In order to achieve the above object, a graphic processing method according to claim 9, wherein a display means for displaying a three-dimensional graphic composed of a plurality of graphic elements; an input means for inputting graphic information of the three-dimensional graphic; A graphic processing method for a graphic processing apparatus, comprising: a storage unit for storing graphic information, wherein the three-dimensional graphic of the gear is displayed in a predetermined drawing state based on the graphic information of the gear among the graphic information of the stored three-dimensional graphic. A gear drawing state changing step of changing a drawing state of a three-dimensional figure of the gear drawn on the display means.
[0021]
According to a tenth aspect of the present invention, there is provided the graphic processing method according to the ninth aspect, further comprising a gear drawing state notification step of notifying a user of a drawing state of a three-dimensional figure of the gear drawn on the display means. I do.
[0022]
According to a eleventh aspect of the present invention, in the graphic processing method according to the ninth or tenth aspect, in the gear drawing step, the three-dimensional figure of the gear is drawn in a cylindrical shape or a real gear shape. .
[0023]
According to a twelfth aspect of the present invention, there is provided the graphic processing method according to any one of the ninth to eleventh aspects, wherein the graphic information of the gear includes at least two items of a module of the gear and the number of teeth. It is characterized by comprising eye information.
[0024]
In a graphic processing method according to a thirteenth aspect, in the graphic processing method according to the twelfth aspect, in the gear drawing step, the drawn three-dimensional figure of the gear is formed in a predetermined drawing state by referring to the gear essential point information. The step of drawing and changing the gear drawing state changes the drawing state of the drawn gear three-dimensional figure.
[0025]
The graphic processing device according to claim 14, wherein in the graphic processing method according to any one of claims 9 to 13, the gear drawing state changing step includes a step of drawing with a cylinder having a radius of a tip circle. Draw with a cylinder whose radius is the root circle radius, draw with a cylinder whose radius is the reference pitch circle radius, draw with a cylinder whose radius is the meshing pitch circle radius, radius of the reference pitch radius + dislocation amount The drawing state is changed to at least one of a drawing state using a cylinder and a drawing state using a gear shape as a substance.
[0026]
According to a fifteenth aspect of the present invention, in the graphic processing method according to any one of the twelfth to fourteenth aspects, a part of the gear essential information is converted by the input means into a cylindrical three-dimensional graphic created in advance. A gear creating step of converting the gear into a three-dimensional figure of the gear based on the inputted gear essential information.
[0027]
The graphic processing device according to claim 16 is the graphic processing method according to any one of claims 12 to 15, wherein the image processing device includes an editing unit configured to edit the drawn three-dimensional graphic of the gear, The gear drawing state notification step determines whether or not editing of the drawn three-dimensional figure of the gear affects the gear points of the gear, and interrupts the editing when affecting the gear points of the gear, It is characterized in that the user is notified to edit by changing or inputting the value of the gear essential point information.
[0028]
To achieve the above object, a program according to claim 17, comprising: a display unit for displaying a three-dimensional figure including a plurality of graphic elements; and a storage unit for storing graphic information of the three-dimensional figure. A program for causing a computer to execute the processing method, wherein a gear drawing step of drawing the three-dimensional figure of the gear on the display means in a predetermined drawing state based on the graphic information of the gear among the stored graphic information of the three-dimensional figure; A gear drawing state changing step of changing a drawing state of the three-dimensional figure of the gear drawn on the display means.
[0029]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a graphic processing apparatus according to an embodiment of the present invention will be described with reference to the drawings.
[0030]
(First Embodiment)
FIG. 1 is a block diagram showing the configuration of the graphic processing device according to the first embodiment of the present invention.
[0031]
1, the graphic processing apparatus includes a bus 1, a central processing unit (CPU) 2, a read only memory (ROM) 3, a random access memory (RAM) 4, an input interface 5, an output interface 7, The computer comprises an external storage device interface 9.
[0032]
The bus 1 is a bus including a control line, a data line, and an address line. The CPU 1, the ROM 3, and the RAM 4 are connected to the bus 1, respectively. The bus 1 includes an input device 6 such as a keyboard, a tablet, and a mouse via an input interface 5, a display device 8 via an output interface 7, and an external storage device 10 via an external storage device interface 9. Each is connected.
[0033]
The display device 8 includes a display output device 8a such as a CRT (Cathode Ray Tube) or an LCD (Liquid Crystal Display) and a print output device 8b such as a printer or a plotter. The external storage device 10 includes a hard disk (HD), flexible disk (FD), optical disk, magneto-optical disk, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW, mini It consists of a disk (MD), a magnetic tape, and the like.
[0034]
The ROM 3 stores a processing program 3a and parameters 3b. The processing program 3a is a program for processing shown in FIGS. 3, 7, 11, 16, and 17 described below. The parameter 3b is a data group used in the processing program 3a. The RAM 4 has a graphic information storage area for storing information such as a shape, a position, a name, and an attribute of a three-dimensional graphic, and includes a gear essential information storage area 4a and a gear position information storage area 4b. , A gear drawing state storage area 4c.
[0035]
The CPU 2 controls the overall operation of the apparatus, uses the RAM 4 as a temporary storage device, reads out the processing program 3a stored in the ROM 3, and performs various processes and controls, for example, graphic input control, graphic display processing, Processing, distance calculation, and the like can be performed. These processes include a process of drawing a gear by referring to gear essential information described later.
[0036]
FIG. 2 is a diagram showing an example of a screen displayed on the display output device 8a in FIG.
[0037]
2, the display output device 8a includes a graphic drawing area 81, a mouse pointer 82, a button area 83, an information output area 84, and an operation panel 85. On the operation panel 85, an information output area 85a and a button 85b are provided. These buttons are all software keys. In the figure drawing area 81, figure information stored in the figure information storage area of the RAM 4, for example, a three-dimensional figure (3D figure) 86 is drawn.
[0038]
Next, the gear figure creation processing according to the present embodiment will be described with reference to the flowchart in FIG. This processing is a “gear figure creation program”.
[0039]
FIG. 3 is a flowchart of the gear figure creation process executed by the CPU 2 in FIG.
[0040]
In FIG. 3, first, in step S01, the gear key input panel is displayed on the operation panel 85 of the display output device 8a. The gear summary input panel includes input areas for a module relating to gears, the number of teeth, a dislocation coefficient (or dislocation amount), a torsion angle, a torsion direction, JGMA accuracy, and the like. For example, there is a screen shown in FIG.
[0041]
Next, in step S02, the user is required to input necessary gear information into the input area of the gear required input panel by keyboard input of the input device 6, mouse click, or the like. Here, the spur gear may be considered to be a helical gear having a helix angle of 0. Therefore, in the case of a spur tooth, it is possible to input a helix angle of 0 and to omit the selection area of the spur gear and the helical gear. Good. Further, since the left direction may be considered as a minus in the right direction, the input area in the twist direction may be omitted, for example, by inputting 20 ° to the right and −20 ° to the left.
[0042]
Next, in step S03, the gear essential information input by the user is stored in the gear essential information storage area 4a, and in step S04, the user inputs the gear position information, and the process proceeds to step S05. The gear position information is, for example, the position of the center axis of the gear, the dimension of the tooth thickness, and the like. The user performs input by keyboard input or mouse click of the input device 6 as in the case of creating a general three-dimensional figure other than the gears.
[0043]
In step S05, the gear position information input by the user is stored in the gear position storage area 4b. In step S06, the gear drawing state input panel is displayed on the operation panel 85 of the display output device 8a. The gear drawing state input panel is, for example, a screen shown in FIG.
[0044]
Subsequently, in step S07, the user selects a desired gear drawing state on the gear drawing state input panel. The gear drawing state is "drawing with a cylinder having the radius of the tooth tip circle", "drawing with a cylinder having the radius of the root circle", "drawing with a cylinder having the reference pitch radius" State "," state drawing with a cylinder having the meshing pitch circle radius as a radius "," state drawing with a cylinder having a reference pitch radius + displacement amount as a radius ", or" state drawing with a gear shape as a substance " Means any of the six. The user is allowed to select which of these states is to be drawn by keyboard input or mouse click. In the present embodiment, the above-mentioned six states can be selected, but it is sufficient if there are at least two or more options.
[0045]
Next, in step S08, the gear drawing state selected by the user is stored in the gear drawing state storage area 4c. In step S09, the essential point information, the position information, and the drawing of the gear stored in the graphic information storage area are stored. By referring to the state, a gear figure is drawn in the figure drawing area 81 of the display output device 8a, and the process ends. For example, FIG. 6 shows a display screen of a gear figure when “state of drawing with a cylinder having a radius of a tip tip circle” is selected.
[0046]
In the first embodiment, an example has been described in which the gear key input panel and the gear drawing state input panel are separate, but one panel may be used.
[0047]
Next, the gear figure correction processing according to the present embodiment will be described with reference to the flowchart in FIG. This processing is a “gear figure correction program”.
[0048]
FIG. 7 is a flowchart of the gear figure correction process executed by the CPU 2 in FIG.
[0049]
In FIG. 7, first, in step S71, the user selects a gear figure to be corrected by keyboard input or mouse click. Next, in step S72, the gear key input panel is displayed on the operation panel 85 of the display output device 8a. In this case, as shown in FIG. 8, the current gear key information is displayed in each key field.
[0050]
Next, in step S73, the user selects a key item column to be corrected by keyboard input, mouse click, or the like, corrects the key item value, and proceeds to step S74. For example, FIG. 9 shows a display screen when the number of teeth is changed from 32 to 16.
[0051]
In step S74, the corrected gear essential information is stored in the gear essential information storage area 4a. In step S75, the gear essential information, the position information, and the drawing state stored in the graphic information storage area are referred to. Then, the gear figure shown in FIG. 10 is drawn in the figure drawing area 81 of the display output device 8a, and the process ends.
[0052]
Next, the gear figure drawing state change processing which is a feature of the present invention will be described with reference to the flowchart in FIG. This process is a “gear figure drawing state change program”.
[0053]
FIG. 11 is a flowchart of a gear figure drawing state changing process executed by the CPU 2 in FIG.
[0054]
In FIG. 11, first, in step S111, the user selects a gear figure whose drawing state is to be changed by keyboard input or mouse click. Next, in step S112, a gear drawing state input panel is displayed on the operation panel 85 of the display output device 8a, and the process proceeds to step S113. In this case, as shown in FIG. 12, various contents for changing the drawing state of the gear figure are displayed.
[0055]
In step S113, a desired drawing state is selected by the user by keyboard input, mouse click, or the like. For example, FIG. 13 shows a display screen when the drawing state has been changed from “display with tooth tip circle” to “display teeth in detail as it is”.
[0056]
Next, in step S114, the information of the gear drawing state changed in step S113 is stored in the gear drawing state storage area 4c. In step S115, the essential information and the position information of the gear stored in the graphic information storage area are stored. By referring to the drawing state and the drawing state, the gear figure shown in FIG. 14 is drawn in the figure drawing area 81 of the display output device 8a, and this processing ends.
[0057]
According to the first embodiment, a screen displaying various contents for changing the drawing state of the gear figure is displayed (step S112, FIG. 12), and a desired drawing state is input by keyboard input or mouse click or the like. Is selected by the user (step S113), so that the user can switch the drawing state of the gear figure as necessary. As a result, it is possible to display the addendum circle when referring to the addendum circle, and to display the pitch circle when referencing the pitch circle, so that design work can be performed with the same usability as conventional 2D CAD. Becomes possible.
[0058]
Also, when it is necessary to display the actual gear shape, such as when simulating the rotation of gears, the actual gear shape is displayed only when it is necessary.In other cases, it is displayed as a simple cylindrical surface, which is more than necessary. Since it is not necessary to increase the data amount, it is possible to reduce the load on the arithmetic processing and drawing processing of the computer and to prevent the calculation speed and the drawing speed from decreasing as much as possible.
[0059]
(Second embodiment)
The configuration (FIGS. 1 and 2) of the second embodiment of the present invention is the same as that of the first embodiment, and the description of the common parts will be omitted. Hereinafter, only differences from the first embodiment will be described.
[0060]
FIG. 15 is a diagram illustrating a state where a gear figure is drawn by the figure processing apparatus according to the second embodiment of the present invention.
[0061]
As shown in FIG. 15, in the present embodiment, for example, it is possible to display the drawing state of the gear drawn on the cylindrical surface as indicated by a dotted line 150. As a result, the user can know the drawing state of the current figure, and when the drawing state of the current figure matches the drawing state desired by the user, there is no need to perform the gear figure drawing state change processing described above. Therefore, usability can be further improved, and design work can be performed efficiently.
[0062]
(Third embodiment)
The configuration of the graphic processing apparatus according to the third embodiment of the present invention (FIGS. 1 and 2) is the same as that of the first embodiment, and the description of the common parts is omitted. Hereinafter, only differences from the first embodiment will be described.
[0063]
FIG. 16 is a flowchart of the gear information addition processing executed by the CPU 2 of FIG. 1 in the third embodiment of the present invention. This processing is a “gear information addition program” for creating a gear figure by adding gear information to a general cylindrical surface.
[0064]
In FIG. 16, first, in step S161, the user causes the user to select a cylindrical surface to which the gear information is added to make a gear figure by using the input device 6 such as a keyboard or a mouse click. Next, in step S162, a gear key input panel is displayed on the operation panel 85 of the display output device 8a. The gear key input panel has input areas for a module relating to gears, the number of teeth, a dislocation coefficient (or dislocation amount), a torsion angle, a torsion direction, JGMA accuracy, and the like. For example, the screen shown in FIG.
[0065]
Next, in step S163, the user is required to input necessary gear information into the input area of the gear essential input panel by using a keyboard or a mouse click. Subsequently, in step S164, the gear essential information input in step S163 is stored in the gear essential information storage area 4a in the RAM 4, and the process proceeds to step S165.
[0066]
In step S165, the position information of the selected cylindrical surface is stored as gear position information in the gear position information storage area 4b. In step S166, a gear drawing state input panel is displayed on the operation panel 85. The gear drawing state input panel is, for example, the screen shown in FIG. 5 as described above.
[0067]
Next, in step S167, the user selects a gear drawing state on the gear drawing state input panel. The gear drawing state refers to "a state where drawing is performed with a cylinder having the radius of the tooth tip circle" or "a state where drawing is performed with a cylinder having the radius of the root circle", or "drawing with a cylinder having a radius of the reference pitch circle". State "," state drawing with a cylinder having the meshing pitch circle radius as a radius "," state drawing with a cylinder having a reference pitch radius + displacement amount as a radius ", or" state drawing with a gear shape as a substance " Any of the six states. The user is allowed to select which of these states to draw in by using a keyboard or a mouse click. In the present embodiment, the above-described six states can be selected, but it is sufficient if there is at least one or more options.
[0068]
Next, in step S168, the information of the gear drawing state selected by the user is stored in the gear drawing state storage area 4c. In step S169, the essential information, the position information, and the like of the gear stored in the graphic information storage area are stored. By referring to the drawing state, the image is drawn in the figure drawing area 81 of the display output device 8a, and the process ends.
[0069]
By this processing, it is possible to add gear information to a general cylindrical surface and convert the general cylindrical surface into a gear figure.
[0070]
According to the third embodiment, by executing the “gear information addition program”, a gear figure is newly created by inputting gear points, which has been conventionally possible. It is also possible to create a gear figure by adding gear information to the cylindrical surface of. The method of creating a gear figure by adding gear information to a cylindrical surface is a conventional two-dimensional CAD in which a schematic shape is drawn by an arc in a conceptual design, and the gear points are determined as a transition to a detailed design is made. Very close to the procedure that was common in. As a result, in the three-dimensional CAD, it is possible to realize the same design work efficiency as in the two-dimensional CAD.
[0071]
(Fourth embodiment)
The configuration of the graphic processing apparatus according to the fourth embodiment of the present invention (FIGS. 1 and 2) is the same as that of the first embodiment, and the description of the common parts will be omitted. Hereinafter, only differences from the first embodiment will be described.
[0072]
FIG. 17 is a flowchart of a three-dimensional figure editing process executed by the CPU 2 of FIG. 1 in the fourth embodiment of the present invention. This process is a program for a user to edit a three-dimensional figure by keyboard input or mouse click.
[0073]
In FIG. 17, first, in step S171, a figure to be edited by the user is selected. Next, in step S172, it is determined whether or not the selected graphic includes a gear graphic. As a result of this determination, if the gear graphic is not included (NO in step S172), the graphic editing process is continued as usual, while if the gear graphic is included (YES in step S172), the process proceeds to step S173 of the subroutine. move on.
[0074]
In step S173, the user is allowed to select an "edit type" to be executed on the graphic selected by the user. Here, the "edit type" means not only an edit that moves the current positional relationship of the current figure such as translation or rotation of a plane, but also an edit that changes the shape of the figure such as making a hole or changing a radius. Is also included.
[0075]
Next, in step S174, it is determined whether or not the type of editing selected by the user affects the key points of the gear. Here, “editing that affects the gist of the gear” is editing in which the radius or diameter of the cylindrical surface must be changed. As a result of the determination in step S174, if the editing does not require the change of the radius or diameter of the cylindrical surface, the editing process of the figure is continued as usual, while the editing that requires the change of the radius or diameter of the cylindrical surface is performed. If there is (YES in step S174), the user is notified on the display device 8, for example, on the display device 8 to notify that the user is about to edit the gear in step S175, and the graphic editing process is interrupted. . The user who has received the notification can edit the gear figure by activating the “gear figure correction program” shown in FIG. 7 and inputting the gear specifications.
[0076]
According to the fourth embodiment, in the case where a gear figure is represented by a cylindrical surface, the editing work has an effect on the gear points while editing a figure similar to a normal cylindrical surface. In this case, since the editing operation is interrupted, it is possible to solve the problem that mismatch between the stored essential gear information and the displayed graphic shape occurs.
[0077]
The present invention supplies, to a computer or a CPU, a software program (a program corresponding to the flowcharts in FIGS. 3, 7, 11, 16, and 17) for realizing the functions of the above-described embodiment. It goes without saying that the object of the present invention is also achieved when the computer or the CPU reads and executes the supplied program.
[0078]
In this case, the program is supplied by being downloaded directly from a storage medium storing the program, or from another computer or database (not shown) connected to the Internet, a commercial network, a local area network, or the like.
[0079]
Further, the program only needs to be able to realize the functions of the above-described embodiments by a computer, and the form includes object code, a program executed by an interpreter, script data supplied to an OS, and the like. May be.
[0080]
Furthermore, the present invention is also realized by supplying a computer with a storage medium storing a software program for realizing the functions of the above-described embodiments, and causing the computer or CPU to read and execute the program stored in the storage medium. It goes without saying that the object of the invention is achieved.
[0081]
In the above-described embodiment, the program is stored in the ROM 3. However, the present invention is not limited to this. Examples of the storage medium that supplies the program include a RAM, an NV-RAM, a hard disk, a flexible disk, an optical disk, and an optical disk. The above programs such as a magnetic disk, MO, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW, magnetic tape, nonvolatile memory card, and other ROM can be stored. Anything should do.
[0082]
Further, in the above-described embodiment, a case where a three-dimensional figure of a gear is drawn has been described. However, it is needless to say that another three-dimensional figure may be used. In this case, the graphic information storage area of the RAM 4 stores the graphic information of the other three-dimensional graphic.
[0083]
【The invention's effect】
As described in detail above, according to the apparatus of the first aspect, the method of the ninth aspect, and the program of the seventeenth aspect, the stored three-dimensional graphic information is determined based on the gear graphic information. Since the three-dimensional figure of the gear is drawn in a predetermined drawing state and the drawing state of the drawn three-dimensional figure of the gear is changed, it is possible to perform design work with the same usability as that of the conventional two-dimensional CAD.
[0084]
According to the apparatus described in claim 2 and the method described in claim 10, the user is notified of the drawing state of the three-dimensional figure of the drawn gear, so that the user can easily know the current drawing state and efficiently. Can perform design work.
[0085]
According to the apparatus of the third aspect and the method of the eleventh aspect, the three-dimensional figure of the gear is drawn in a cylindrical shape or a real gear shape, so that the load of the computer processing and drawing processing is reduced, and the calculation speed is reduced. In addition, it is possible to prevent the drawing speed from lowering as much as possible.
[0086]
According to the apparatus of the fifth aspect and the method of the thirteenth aspect, the drawn three-dimensional figure of the gear is drawn in a predetermined drawing state by referring to the gear essential information, and the three-dimensional figure of the drawn gear is drawn. Since the drawing state is changed, it is possible to create a gear figure by adding gear information to a general cylindrical surface, in addition to creating a new three-dimensional figure of gears by inputting gear essential information Thus, the same design work efficiency as that of the two-dimensional CAD can be realized in the three-dimensional CAD.
[0087]
According to the apparatus described in claim 8 and the method described in claim 16, it is determined whether or not editing of the drawn three-dimensional figure of the gear affects the gear point of the gear, and affects the gear point of the gear. When the editing is interrupted and the user is notified to edit by changing or inputting the value of the gear essential information, the mismatch between the stored gear essential information and the drawn three-dimensional figure of the gear may occur. The problem that occurs can be solved.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a graphic processing apparatus according to a first embodiment of the present invention.
FIG. 2 is a diagram showing an example of a screen displayed on a display output device 8a in FIG.
FIG. 3 is a flowchart of a gear figure creation process executed by a CPU 2 in FIG. 1;
FIG. 4 is a diagram showing a screen of a gear key input panel displayed on the display output device 8a in the processing of FIG. 3;
FIG. 5 is a diagram showing an example of a screen of a gear drawing state input panel displayed on the display output device 8a in the processing of FIG. 3;
FIG. 6 is a schematic diagram of a display output device 8a that displays a processing result of FIG. 3;
FIG. 7 is a flowchart of a gear figure correction process executed by a CPU 2 in FIG. 1;
8 is a diagram showing a screen of a gear key input panel displayed on the display output device 8a in the process of FIG. 7;
9 is a diagram showing another screen of the gear key input panel displayed on the display output device 8a in the process of FIG. 7;
FIG. 10 is a schematic diagram of a display output device 8a that displays a processing result of FIG. 7;
11 is a flowchart of a gear figure drawing state changing process executed by the CPU 2 in FIG. 1;
12 is a diagram illustrating a screen of a gear drawing state input panel displayed on the display output device 8a in the processing of FIG. 11;
13 is a diagram showing another screen of the gear drawing state input panel displayed on the display output device 8a in the processing of FIG.
FIG. 14 is a schematic diagram of a display output device 8a that displays the processing result of FIG.
FIG. 15 is a diagram illustrating a state in which a gear figure is drawn by the figure processing apparatus according to the second embodiment of the present invention;
FIG. 16 is a flowchart of a gear information adding process executed by the CPU 2 of FIG. 1 in the third embodiment of the present invention.
FIG. 17 is a flowchart of a three-dimensional figure editing process executed by the CPU 2 of FIG. 1 in the fourth embodiment of the present invention.
[Explanation of symbols]
1 bus
2 CPU
3 ROM
3a Processing program
3b parameter
4 RAM
4a Gear summary information storage area
4b Gear position information information storage area
4c Gear drawing state storage area
6 Input device
8 Display device
10 External storage device

Claims (17)

A graphic processing apparatus comprising: display means for displaying a three-dimensional graphic composed of a plurality of graphic elements; and storage means for storing graphic information of the three-dimensional graphic.
Gear drawing means for drawing the three-dimensional figure of the gear on the display means in a predetermined drawing state based on the graphic information of the gear among the stored graphic information of the three-dimensional figure;
And a gear drawing state changing means for changing a drawing state of the three-dimensional figure of the gear drawn on the display means. 2. The apparatus according to claim 1, further comprising a gear drawing state notifying unit configured to notify a user of a drawing state of the three-dimensional figure of the gear drawn on the display unit. 3. The graphic processing apparatus according to claim 1, wherein the gear drawing unit draws the three-dimensional figure of the gear in a cylindrical shape or a real gear shape. The graphic processing apparatus according to any one of claims 1 to 3, wherein the graphic information of the gear includes gear essential information including at least two items of a module of the gear and the number of teeth. The gear drawing means draws the drawn three-dimensional figure of the gear in a predetermined drawing state by referring to the gear summary information, and the gear drawing state changing means displays the three-dimensional figure of the drawn gear. 5. The graphic processing apparatus according to claim 4, wherein the drawing state is changed. The gear drawing state changing means, a state of drawing with a cylinder having a radius of a tip circle, a state of drawing with a cylinder having a radius of a root circle, a state of drawing with a cylinder having a reference pitch circle radius, The drawing state is changed to at least one of a state of drawing with a cylinder having the meshing pitch circle radius as a radius, a state of drawing with a cylinder having the reference pitch radius + displacement amount as a radius, and a state of drawing with a real gear shape. The graphic processing device according to claim 1, wherein: An input unit for inputting the graphic information, and a part of the gear essential information is converted into a three-dimensional gear figure based on the input gear essential information by inputting a part of the gear essential information. The graphic processing apparatus according to claim 4, further comprising: a gear creating unit configured to perform the operation. Editing means for editing the drawn three-dimensional figure of the gear, wherein the gear drawing state notifying means determines whether or not editing of the drawn three-dimensional figure of the gear affects the gear points of the gear. 8. The method according to claim 4, further comprising: interrupting the editing when affecting the gear point, and notifying a user to edit by changing or inputting the value of the gear point information. 2. The graphic processing device according to claim 1. A graphic processing method for a graphic processing apparatus, comprising: a display unit that displays a three-dimensional graphic composed of a plurality of graphic elements; an input unit that inputs graphic information of the three-dimensional graphic; and a storage unit that stores graphic information of the three-dimensional graphic. ,
A gear drawing step of drawing the three-dimensional figure of the gear on the display means in a predetermined drawing state based on the figure information of the gear among the stored figure information of the three-dimensional figure;
A gear drawing state changing step of changing a drawing state of a three-dimensional figure of the gear drawn on the display means. 10. The graphic processing method according to claim 9, further comprising a gear drawing state notification step of notifying a user of a drawing state of a three-dimensional figure of the gear drawn on the display unit. 11. The figure processing method according to claim 9, wherein the gear drawing step draws a three-dimensional figure of the gear in a cylindrical shape or a gear shape as a substance. The graphic processing method according to any one of claims 9 to 11, wherein the graphic information of the gear comprises gear essential information including at least two items of a module of the gear and the number of teeth. In the gear drawing step, the drawn three-dimensional figure of the gear is drawn in a predetermined drawing state by referring to the gear essential point information, and the gear drawing state changing step includes the step of changing the drawn three-dimensional figure of the gear. 13. The graphic processing method according to claim 12, wherein a drawing state is changed. The gear drawing state changing step is a state of drawing with a cylinder having a radius of a tip circle, a state of drawing with a cylinder having a radius of a root bottom circle, a state of drawing with a cylinder having a reference pitch circle radius, The drawing state is changed to at least one of a state of drawing with a cylinder having the meshing pitch circle radius as a radius, a state of drawing with a cylinder having the reference pitch radius + displacement amount as a radius, and a state of drawing with a real gear shape. The graphic processing method according to claim 9, wherein: A gear creating step of converting a previously created cylindrical three-dimensional figure into a three-dimensional figure of a gear based on the inputted gear essential information by inputting a part of gear essential information by the input means. The graphic processing method according to claim 12, wherein the graphic processing method is provided. The image processing apparatus includes an editing unit that edits the drawn three-dimensional figure of the gear, and in the gear drawing state notification step, the editing of the drawn three-dimensional figure of the gear affects a key point of the gear. Judging whether or not the gear key point is affected, interrupting the editing, and notifying a user to perform the editing by changing or inputting the value of the gear key point information. Item 16. The graphic processing method according to any one of Items 12 to 15. A program for causing a computer to execute a graphic processing method of a graphic processing apparatus including a display unit that displays a three-dimensional graphic composed of a plurality of graphic elements and a storage unit that stores graphic information of the three-dimensional graphic.
A gear drawing step of drawing the three-dimensional figure of the gear on the display means in a predetermined drawing state based on the figure information of the gear among the stored figure information of the three-dimensional figure;
A gear drawing state changing step of changing a drawing state of a three-dimensional figure of the gear drawn on the display means.

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