JP2007272925A - Method, device for displaying interference check result and computer readable recording medium in which interference check result display program is recorded - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily recognize an exact position of a representative point where contact/interference occurs together with a rough position, in addition, the exact position of the representative point where the contact/interference occurs is similarly and easily recognized together with the rough position also in the real time property is demanded, such as for performing interference check while moving and rotating an object, to further and easily discriminate a specified representative point from other representative points also when a plurality of representative points exist and to easily confirm representative points at a state of being hidden behind each object by devising a display form of the interference check result display method. <P>SOLUTION: An index representing relative positional relation between the objects is displayed on a display device together with at least one of an index of a position where the contact occurs between the objects existing in a virtual three-dimensional space, an index of a range within which the interference occurs and an index of a preliminarily specified range. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides an interference check result display method, an interference check result display device, and an interference check result display suitable for use in displaying the results of interference check processing between a plurality of objects constructed in a virtual three-dimensional space set on a computer. The present invention relates to a computer-readable recording medium on which a program is recorded.

In recent years, design methods using three-dimensional CAD have been used in the design of equipment, devices, etc., but in such a design using three-dimensional CAD, before actually making a prototype, a computer is used. It is indispensable to check interference between objects constructed in the virtual three-dimensional space set above.
Now, since the interference check function in the conventional three-dimensional CAD takes a long time to process, the interference check is performed with each object model to be interference stopped, and the result is displayed on a monitor or the like after the interference check processing is completed. If the object model rotates or moves, the movement of the object is defined in advance, an interference check is performed for each predetermined unit movement amount of the object model, and after all the interference check processes are completed A method of displaying the result on a monitor or the like and confirming the result is used.

In addition, as a method for confirming the results of these interference checks, a method of displaying the shared space (volume) between each object model in which interference has occurred exclusively on a monitor or the like is used. Specifically, methods such as displaying the external shape of the shared space as a line drawing, changing the color, or displaying only the shared space are used.
FIG. 22 is a diagram showing a conventional interference check result display method, and is a diagram showing a screen display state in the interference unit display device described in Japanese Patent Laid-Open No. 9-54792. As shown in FIG. In the conventional interference check result display method, when the interference part between the object models (sharing space) is shaded, and the interference part is small, it is determined that it is very difficult to check the interference part. Drawing and displaying an area of a predetermined shape surrounding the interference part such as a circle, a rectangular parallelepiped, a polygon, etc., centered on the interference part representative point (any one of the center of gravity, centroid, or arbitrary vertex of the interference part) The enlarged display of the interference portion (see reference numeral 1001 in FIG. 22), or the child screen 1002 of the interference portion viewed from a plurality of directions (a two-dimensional screen viewed from the front, side, and top surfaces) is displayed. (Fig. 2 See upper right), further, in such case where the number of interference points there are two or more, displaying the interference check result by a balloon display as needed.

  In recent years, as an interference check method, an object model is represented by a plurality of planar surface polygons (polygons). As a result of the interference check process, interference points or An extremely high-speed interference check method has been used in which the nearest contact point is calculated, and when the contact / interference occurs, the interference point or the nearest contact point is returned as a check result.

  By such a high-speed interference check method, it is possible to display several cycles to several tens of cycles per second in the design of complex equipment / devices. Performing operations that were not often performed in the past, such as checking the interference while moving and rotating the object arbitrarily, and checking the location of interference in real time, etc. Has also occurred.

In this way, when the positional relationship between object models changes and is displayed every moment, in order to check the state of the interference location in real time, it is suitable for systems with a display function that can be switched at high speed. There is a need for an interference check result display method that allows easy confirmation of the interference state of the device.
However, the above-described conventional interference check result display method is a result display method as a part of a method for obtaining an interference part (shared space) between object models, and how the shared space obtained as a result of the interference check is changed. Since it was created from the viewpoint of making it easy to see, when performing an interference check while arbitrarily moving and rotating an object model in a virtual three-dimensional space, the display device displays the result of the interference check process in real time. There is a problem that it is difficult to identify the position or the like of the interference portion displayed on the screen.

  In addition, when there is a plurality of interference points (representative points), when a specific representative point is designated, the designated representative point is distinguished from other representative points on display, or a plurality of representative points are designated. There is also a need for a display method for continuously confirming. Furthermore, when there are a plurality of representative points, the representative points other than the specified specific representative point have a high probability of being hidden by the shadow of each object model on the display, so that such object model There is also a need for an interference check result display method capable of easily confirming a representative point hidden behind a shadow.

Furthermore, there is a need for a display method suitable for monitoring in real time a change in the positional relationship between specific objects when the object is moved / rotated, although it is not interference.
The present invention has been devised in view of such problems, and by devising the display form, it is possible to easily recognize the accurate position together with the approximate position of the representative point where contact / interference has occurred. Even in the case where real-time performance is required, such as performing an interference check while moving and rotating an object, it is possible to easily recognize the exact position together with the approximate position of the representative point where contact / interference occurred, In addition, even when there are multiple representative points, the designated representative point can be easily distinguished from other representative points, and the representative points hidden in the shadow of each object can be easily confirmed. An object of the present invention is to provide an interference check result display method, an interference check result display device, and a computer-readable recording medium on which an interference check result display program is recorded.

  For this reason, the interference check result display method of the present invention performs an interference check process between objects existing in a virtual three-dimensional space and stores the interference check result in a storage device, and contact between the objects is performed. A display step for displaying on the display device an index indicating a relative positional relationship between the objects, together with at least one of an index of a position where the interference occurs, an index of a range where interference occurs, and an index of a range specified in advance. It is characterized by being composed.

  The interference check result display device of the present invention includes an interference check unit that performs an interference check process between objects existing in a virtual three-dimensional space, an index of a position where contact occurs between the objects, and a range where interference occurs. And a display control unit that displays on the display device an indicator that indicates a relative positional relationship between the objects, together with at least one of the indicator and the indicator in a predetermined range. Yes.

  Further, a computer-readable recording medium on which the interference check result display program of the present invention is recorded includes an interference check function for performing an interference check process between objects existing in a virtual three-dimensional space, and between the objects. Display control for displaying on the display device an indicator indicating the relative positional relationship between the objects together with at least one of a distance in a range where contact occurs, a distance in a range where interference occurs, and a predetermined distance range It is characterized by executing functions.

  The interference check processing result display method according to the present invention includes an interference check step of performing interference check processing between objects existing in a virtual three-dimensional space and storing the interference check result in a storage device, and contact between the objects. A selection step of selecting any one of the plurality of representative points at the time of interference as a specific point, a specific point display step of displaying the specific point on the display device so as to be distinguishable from the other representative points, A cross-section calculation step for calculating a cross-section based on a viewpoint for viewing the specific point in the virtual three-dimensional space, and an area in which the object occupies the virtual three-dimensional space; and displaying the cross-section on the display device together with the specific point It is characterized by comprising a sectional display step.

When the viewpoint is moved on the spherical surface with the specific point as the center, the cross section may be recalculated and displayed together with the specific point, or the designation as the specific point may be set as another representative point. When the change is made, it may be moved and displayed while maintaining a specific constraint condition together with the visual continuity while calculating the cross section on the display at the representative point of the change destination.
The interference check processing result display device of the present invention performs an interference check process between objects existing in a virtual three-dimensional space, and stores the interference check result in a storage device, and the contact between the objects A selection unit that selects any one of the plurality of representative points at the time of interference as a specific point, a specific point display control unit that displays the specific point on the display device in a distinguishable manner from the other representative points, A cross-section calculation unit that calculates a cross-section based on a viewpoint for viewing the specific point in the virtual three-dimensional space, and an area in which the object occupies the virtual three-dimensional space, and the cross-section together with the specific point on the display device It is characterized by comprising a display control unit for displaying.

  Furthermore, the computer-readable recording medium in which the interference check result display program of the present invention is recorded executes interference check processing between objects existing in the virtual three-dimensional space on the computer, and the interference check result is stored in the storage device. An interference check step to be stored, a selection step of selecting any one of a plurality of representative points at the time of contact / interference between the objects as a specific point, and the specific point being distinguishable from the other representative points A specific point display step for displaying on the display device; a cross-sectional calculation step for calculating a cross-section based on a viewpoint for viewing the specific point in the virtual three-dimensional space; and an area in which the object occupies the virtual three-dimensional space; And a section display step of displaying the section on the display device together with the specific point.

  FIG. 1 is a block diagram showing the principle of the related art of the present invention. As shown in FIG. 1, the interference check result display apparatus of the present invention performs interference check processing for performing interference check processing between objects existing in a virtual three-dimensional space. As a result of the interference check process in the unit 1 and the interference check unit 1, display control is performed so as to simultaneously display an accurate position together with a rough position of a representative point where contact or interference occurs between objects in the virtual three-dimensional space. The display control unit 2 is provided.

  With such a configuration, the object data existing in the virtual three-dimensional space input to the interference check unit 1 is subjected to the interference check process in the interference check unit 1, and as a result of the interference check by the interference check unit 1, the virtual data Information about the position of the representative point where contact or interference has occurred between the objects in the three-dimensional space is sent to the display control unit 2. Display control is performed to display the position simultaneously.

  FIG. 2 is a block diagram showing the principle of the present invention. As shown in FIG. 2, the interference check result display apparatus according to the present invention performs an interference check process for performing an interference check process between objects existing in a virtual three-dimensional space. As a result of the interference check process in the unit 3 and the interference check unit 3, an index of a position where contact occurs between objects, an index of a range where interference occurs, and a range designated in advance within a range where no contact or interference occurs In addition to at least one of the indicators, a display control unit 4 that performs display control so as to display a variable shape expressed with respect to the distance between nearest contacts as an interference check result is configured.

With such a configuration, the object data existing in the virtual three-dimensional space input to the interference check unit 3 is subjected to interference check processing in the interference check unit 3, and as a result of the interference check by the interference check unit 3. Information about the distance between the closest points between the objects is sent to the display control unit 4.
In this display control unit 4, based on the information on the distance between the closest points between the objects sent from the interference check unit 3, the index of the position where the contact occurs between the objects, the index of the range where the interference occurs, and the contact or interference Display control is performed to display a variable shape in which the distance between closest points as an interference check result is expressed, together with at least one of the indices of the range designated in advance within the range that does not occur.

  FIG. 3 is a block diagram showing another principle of the present invention. As shown in FIG. 3, the interference check result display apparatus of the present invention performs an interference check process between objects existing in a virtual three-dimensional space. An interference check unit 5 and a display control unit 6 that controls the display device to display a representative point at the time of contact / interference between objects on the display device as a result of performing the interference check process in the interference check unit 5 Further, the display control unit 6 includes a discriminable display control unit 61 and a cross section calculation unit 62.

  When a plurality of representative points are generated as a result of the interference check process, the discriminable display control unit 61 designates one of the plurality of representative points as a specific point, and then specifies that specific point. In order to confirm, the display device 7 is controlled so that the specific point can be discriminated from other representative points other than the specific point, and the cross-section calculating unit 62 displays the specified specific point in a virtual three-dimensional manner. The section on the display is calculated based on the viewpoint for viewing in the space and the area where the object occupies the virtual three-dimensional space.

The display control unit 6 is configured to control the display device 7 so as to display a specific point together with the cross section on the display calculated by the cross section calculation unit 62.
With such a configuration, the object data existing in the virtual three-dimensional space input to the interference check unit 5 is subjected to interference check processing in the interference check unit 5, and as a result of the interference check by the interference check unit 5, Information on the position of the representative point at the time of contact / interference between objects is sent to the display control unit 6.

  Here, when a plurality of representative points are generated as a result of the interference check, if any one of the plurality of representative points is designated as a specific point, the discriminable display control unit 61 in the display control unit 6 However, the display device 7 is controlled so that the specific point can be distinguished from other representative points other than the specific point, and the specified specific point is displayed in the virtual three-dimensional space by the cross-section calculating unit 62 in the display control unit 6. The cross section on the display is calculated based on the viewpoint for viewing and the region where the object indicates the virtual three-dimensional space.

Further, the display control unit 6 controls the display device 7 to display a specific point together with the cross section on the display calculated by the cross section calculation unit 62.
By the way, a computer-readable recording medium on which an interference check result display program according to the related art of the present invention is recorded includes an interference check function for performing an interference check process between objects existing in a virtual three-dimensional space, As a result of the interference check processing in the interference check function, a display control function that controls to display the exact position simultaneously with the approximate position of the representative point where contact or interference occurred between objects in the virtual three-dimensional space is realized An interference check result display program for recording is recorded.

  Further, in the computer-readable recording medium in which the interference check result display program of the present invention is recorded, an interference check function for performing an interference check process between objects existing in the virtual three-dimensional space on the computer, and contact between the objects Control to display the variable shape expressed for the distance between the closest points as the interference check result, along with at least one of the distance of the range where the interference occurs, the distance of the range where the interference occurs, and the distance range specified in advance An interference check result display program for realizing the display control function is recorded.

  Furthermore, in a computer-readable recording medium in which the interference check result display program of the present invention is recorded, an interference check function for performing interference check processing between objects existing in the virtual three-dimensional space on the computer, and the interference check function A computer-readable recording medium on which an interference check result display program for realizing a display control function for controlling to display a representative point at the time of contact / interference between objects is recorded as a result of performing interference check processing in If the display control function specifies a representative point as one of the representative points when a plurality of representative points are generated as a result of the interference check process, the specific point A discriminable table that controls the display so that the specific point can be discriminated from other representative points other than the specific point. Provided with a control function, a viewpoint for viewing the specified specific point in the virtual three-dimensional space, a cross-section calculation function for calculating a cross-section on the display based on an area in which the object occupies the virtual three-dimensional space, and the cross-section It is characterized by having a cross-section / specific point display function for controlling to display the specific point together with the cross-section on the display calculated by the calculation function.

As described above in detail, according to the interference check result display method of the related technology of the present invention, the accurate position as well as the approximate position of the representative point where contact or interference has occurred between objects in the virtual three-dimensional space is obtained. By displaying simultaneously, there is an advantage that it is possible to easily recognize the occurrence of contact or interference and to recognize the exact position of the representative point.
In addition, while displaying the first shape with a relatively small transparency calculated to maintain a certain size on the display device with the representative point as the center of the shape as an accurate position, on the outside of the first shape, By displaying the second shape, which is larger than the first shape and has a relatively high transparency, as a rough position, it is possible to easily recognize the occurrence of contact or interference and to easily confirm the accurate position of the representative point. In addition, since it is always displayed on the display device at a constant size regardless of the display magnification of the object, the representative point is not lost even if the enlargement / reduction of the screen display is repeated. Even when the interference check is performed while moving and the result is displayed, the position of the representative point can be easily confirmed even in the interference check result displayed while changing one after another like a moving image. It can further an advantage that can be easily grasped the occurrence of interference in the design work of complex devices.

  In addition, a plurality of pieces that can be visually recognized with a certain size on the display device are arranged radially around the representative point, the center of the plurality of pieces is set to an accurate position, and the radial region is displayed as a rough position. In this way, the occurrence of contact or interference can be easily recognized, and the accurate position of the representative point can be easily confirmed, and the display magnification of the object can be set on the display device. Regardless of the fact that it is always displayed at a constant size, the representative point will not be lost even if the screen display is repeatedly enlarged / reduced, and the interference check is performed while moving the object, and the result is displayed. In addition, the position of the representative point can be easily confirmed in the interference check result displayed while changing one after another like a moving image, and the occurrence of interference is easy even in the design work of a complicated device. There is also an advantage to be able to grasp.

Furthermore, by displaying at least one of the plurality of pieces so that the display effect is different from the other pieces, the visibility can be improved, and the approximate position of the representative point can be easily recognized. is there.
Further, according to the interference check result display method of the present invention, an index of a position where contact occurs between objects, an index of a range where interference occurs, and an index of a range specified in advance within a range where contact or interference does not occur Along with at least one of them, by displaying a variable shape that expresses the distance between the closest contacts as a result of the interference check or the relationship between the closest contacts between the objects, the interference check is performed while moving the object, and the result is displayed. In this case, it is possible to easily recognize the distance between the closest points between objects or the state of the relationship between the closest points between objects, and to continuously monitor the occurrence of contact / interference. There is an advantage that the design time can be shortened because it can be reflected quickly.

  Furthermore, according to the interference check result display method of the present invention, when a plurality of representative points are generated as a result of the interference check process, any one of the plurality of representative points is designated as a specific point. The specific point is displayed so that it can be discriminated from other representative points other than the specific point, and the point of view for viewing the specific point in the virtual three-dimensional space and the area where the object occupies the virtual three-dimensional space By calculating the cross section and displaying the specific point along with the calculated cross section on the display, it is possible to easily check the contact / interference state at the specific point, which can be quickly reflected in design changes, etc., reducing design time There are advantages you can do.

When the viewpoint is moved on a spherical surface centered on a specific point, a cross-section on the display may be calculated each time and displayed together with the specific point, so that the contact / interference state at the specific point is obtained. Since it can be confirmed in more detail, there is an advantage that design time can be quickly reflected in design changes and the design time can be shortened.
In addition, when the designation as a specific point is changed to another representative point, it moves while maintaining a specific constraint condition along with the visual continuity on the display while calculating the cross-section on the display at the representative point of the change destination In this way, it is easy to grasp the state of contact / interference, without losing sight of the current position in the image displayed on the display device, and even when there are a plurality of representative points. The state of contact / interference can be confirmed efficiently.

Furthermore, according to the interference check result display device of the related technology of the present invention, the interference check unit and the display control unit that performs display control so as to simultaneously display the accurate position together with the approximate position of the representative point are configured. By doing so, it is possible to easily recognize the occurrence of contact or interference and to recognize the accurate position of the representative point.
Furthermore, according to the interference check result display device of the present invention, the interference check unit and the index of the position where the contact occurs between the objects, the index of the range where the interference occurs, and the range where no contact or interference occurs are designated in advance. In addition to at least one of the displayed range indicators, a display control unit that controls display to display a variable shape expressed with respect to the distance between the closest contacts is configured to perform an interference check while moving the object. When performing and displaying the results, the distance between the closest points between objects or the state of the relationship between the closest points between objects can be easily seen, and the state of contact / interference can be continuously monitored. Therefore, there is an advantage that design time can be reflected quickly and design time can be shortened.

  Furthermore, according to the interference check result display device of the present invention, the distinguishable display control unit that controls the display device so that the specific point can be distinguished from other representative points other than the specific point, and the cross section on the display Since the display control unit configured with the calculated cross-sectional calculation unit controls the display device to display the specific point together with the cross-section on the display calculated by the cross-sectional calculation unit, contact / interference at the specific point Thus, there is an advantage that the state can be easily confirmed and can be quickly reflected in a design change and the design time can be shortened.

Embodiments of the present invention will be described below with reference to the drawings.
(A) Description of Hardware Configuration and Functional Configuration of Interference Check Result Display Device According to Each Embodiment of the Present Invention FIG. 4 shows a hardware configuration and functional configuration of an interference check result display device according to each embodiment of the present invention. As shown in FIG. 4, the interference check result display device according to the embodiment of the present invention includes a computer 11, a keyboard 15, a mouse 14, a monitor 13, and a storage device 12. .

The computer 11 includes a CPU (Central Processing Unit), a memory, and the like (not shown), a storage device 12 that can hold various data in the computer 11, an external input / output such as a keyboard 15 and a mouse 14. It is the core of this device by connecting and using the device.
Both the keyboard 15 and the mouse 14 are used as input means, and are used to input instructions for rotating / moving the object model to be checked for interference in a three-dimensional space, various necessary information, and the like. .

The storage device 12 is a storage medium such as a hard disk and stores various programs for operating this device and various data such as the result of interference check.
The monitor 13 is a display device for displaying the result of calculation by the computer 11, and the result of interference check is also displayed on the monitor 13.
Further, as shown in FIG. 4, the computer 11 is configured with functions as a three-dimensional CAD system 16, an overall control unit 17, an image data forming unit 18, and an interference check unit 19.

  The three-dimensional CAD system 16 forms an object (object model) that exists in a virtual three-dimensional space that is a target of interference check processing, and expands the virtual three-dimensional space in a memory or the like (not shown). It handles object models in a three-dimensional space. The data of the object model formed by the three-dimensional CAD system 16 is sent to the overall control unit 17 via a memory (not shown) of the computer 11 or the like.

  The overall control unit 17 performs various controls such as input / output in the computer 11, and corresponds to, for example, an OS (Operating System) in a computer system, and includes a storage device 12 and a memory (not shown). ) And the like, and various arithmetic processes are performed according to inputs from an external input / output device such as the keyboard 15 and the mouse 14.

  The overall control unit 17 controls the operation of the image data forming unit 18 and the interference check unit 19 and exchanges various data with the image data forming unit 18 and the interference check unit 19. For example, the object model data formed by the three-dimensional CAD system 16 is sent to the interference check unit 19, and the interference check unit 19 performs interference check processing, or the result of this interference check processing is image data formation. The image data is sent to the unit 18 and image data for display is created.

Further, the overall control unit 17 controls the monitor 13 and the storage device 12 to display the calculation result on the monitor 13 which is a display device or to store the calculation result in the storage device 12.
The interference check unit 19 performs an interference check process on the data of the object model formed by the three-dimensional CAD system 16 according to the control by the overall control unit 17, and the result of the interference check process is displayed on the overall control unit 17 and the image. The data is sent to the data forming unit 18 or the like.

  The interference check unit 19 uses an interference check method described in JP-A-9-27046, JP-A-7-134735, JP-A-8-77210, and the like in a virtual three-dimensional space. Interference check processing between existing object models is performed. In other words, the movement amount and movement speed of the object model existing in the virtual three-dimensional space, the distance between the object models, and the like are monitored, and when these values are equal to or larger than the set values, the calculation of the interference check process is performed. The contact / interference point, the closest point distance between object models, and the like can be obtained as interference check results.

In other words, the object model existing in the virtual three-dimensional space is moved by the keyboard 15 or the mouse 14 so that the interference check process between the object models is performed at any time.
This interference check process is executed by expressing each object model with a plurality of planar surface polygons (polygons). For example, the interference check process is performed in a state where these polygons are divided into triangles. As a result of this interference check processing, a contact / interference point or closest point is obtained on the lattice point, side or triangle polygon surface of the triangular polygon. Further, when contact / interference occurs, a triangular polygon lattice point, a side or a point on the surface of the triangular polygon (contact / interference point) in the contact / interference portion is used as a representative point.

Therefore, the interference check unit 19 sends representative point information to the image data forming unit 18 and the overall control unit 17 when contact / interference occurs as a result of the interference check process.
The image data forming unit 18 forms image data to be displayed on the monitor 13, and forms various image data from the interference check result sent from the interference check unit 19.

The interference state shape generation means 20 in the image data forming unit 18 generates a shape indicating the interference occurrence state. Based on the representative point information sent from the interference check unit 19, the shape indicating the interference occurrence state is monitored 13. The monitor 13 is controlled to be displayed on the screen.
The representative points detected by the interference check unit 19 and the image data formed by the image data forming unit 18 are stored in the storage device 12.

Both the keyboard 15 and the mouse 14 function as representative point designating means. A specific representative point can be designated by using the keyboard 15 and the mouse 14, and an appropriate viewpoint, note can be used as will be described later. Input information such as viewpoint and display volume.
The monitor 13 displays an interference check result by the image data forming unit 18 and the overall control unit 17, and this display allows the operator to confirm the occurrence of contact / interference.

The interference check result display method using the interference check result display device configured as described above will be described below with reference to the drawings.
(B) Description of First Embodiment Now, the interference check result display method according to the first embodiment of the present invention is displayed by the interference check result display device shown in FIG. In the 3D CAD system 16, an object model that is an object of interference check processing is formed, and object data existing in the virtual 3D space is sent from the 3D CAD system 16 to the interference check unit 19. The interference check unit 19 performs an interference check process between object models existing in the virtual three-dimensional space.

Further, as a result of the interference check processing by the interference check unit 19, information on the positions of representative points and the like are sent to the image data forming unit 18, and an interference occurrence mark 900 ( Is generated).
Here, the interference occurrence mark 900 (see FIG. 5) generated by the interference state shape generation unit 20 displays the accurate position together with the approximate position of the representative point at the same time. The interference occurrence mark 900 (see FIG. 5) is controlled so as to be displayed together with the object model subjected to the interference check process, and is displayed on the monitor 13 via the overall control unit 17, so that the objects in the virtual three-dimensional space are displayed. In addition to the approximate position of the representative point where contact or interference occurred, the accurate position is displayed simultaneously. That is, the image data forming unit 18 and the overall control unit 17 correspond to the display control unit 2 shown in FIG.

The interference check result display device according to the first embodiment of the present invention is configured as described above, and a display mode of interference check results by such an interference check result display device will be described with reference to the drawings.
FIGS. 5A and 5B are views showing an interference check result display method as the first embodiment of the present invention, and FIG. 5A is an enlarged view showing the interference state display shape. FIG. 5B shows the display shape.

  As shown in FIG. 5A, the interference check result display method according to the first embodiment of the present invention displays an interference occurrence mark 900 having a shape indicating an interference occurrence state. The first sphere 101, which is a sphere with a relatively low transparency with the representative point 100 as the center of the shape, is displayed as the first shape, and the first sphere 101 is outside the first sphere 101 of the first shape. It is formed by displaying the second sphere 102 which is a larger sphere having a relatively higher transparency than the second shape. Note that it is desirable to use different colors for displaying the first sphere 101 and the second sphere 102.

  Here, in this display method, as shown in FIG. 5B, as a result of performing an interference check process between the object model 110 and the object model 120, it is confirmed that interference has occurred at the representative point 100. The first sphere 101 as the first shape shows the exact position of the representative point 100, and the second sphere 102 as the second shape shows the approximate position of the representative point 100. ing.

  FIGS. 6A and 6B are both diagrams showing an interference check result display method according to the first embodiment of the present invention. Both are the interference check processing performed between the object model 110 and the object model 120. FIG. 6A is a diagram showing the display shape of the result of the interference check process together with the overall image of the object model to be checked for interference, and FIG. It is a figure which shows the display shape as a result of an interference check process with the enlarged view of the interference generation | occurrence | production part in Fig.6 (a).

  As shown in FIGS. 6A and 6B, the interference check result display method according to the first embodiment of the present invention indicates that interference has occurred at the representative point 100. The interference occurrence mark 900 is controlled by the interference state shape generation means 20 to always maintain a constant size even when the display magnification (zoom ratio) of the object models 110 and 120 displayed on the monitor 13 is changed. It has become so.

The representative point 100 itself shown in FIGS. 5 and 6 is added for convenience of explanation, and is not actually displayed. The exact position of the representative point 100 is the first sphere as the first shape. 101.
Since the interference check result display method according to the first embodiment of the present invention is configured as described above, the result of the interference check processing performed by the interference check unit 19 shown in FIG. 4 is sent to the image data forming unit 18. Then, the interference occurrence shape 900 is formed by the interference state shape generation means 20 in the image data forming unit 18.

Further, display image data is formed by the image data forming unit 18 so that the interference occurrence mark 900 formed by the interference state shape generation unit 20 is displayed together with the image data of the article data 110 and 120, and these images are displayed. It is displayed on the monitor 13.
FIG. 7 is a flowchart for explaining the interference check result display method according to the first embodiment of the present invention. The interference check processing is performed using the flowchart (steps A1 to A15) shown in FIG. And how to display the results.

The object models 110 and 120 existing in the virtual three-dimensional space formed by the three-dimensional CAD system 16 are moved and rotated using the mouse 14 and the keyboard 15 (step A1). When the object models 110 and 120 are moved / rotated using the mouse 14 or the like, the interference check unit 19 performs interference check processing (step A2).
If contact / interference has not occurred as a result of the interference check process by the interference check unit 19 (see NO route in step A3), the process returns to step A1 again. If interference has occurred (see YES route in step A3), information on the position of the representative point 100 is acquired as a result of the interference check processing by the interference check unit 19 (step A4). Information on the point 100 is sent to the image data forming unit 18. Here, the interference state shape generation means 20 in the image data forming unit 18 determines whether the result of the interference check processing is interference or contact (step A5).

  Here, when the result of the interference check process is interference (see YES route in step A5), the interference occurrence mark 900 for displaying the representative point 100 on the monitor 13 is attributed to indicate interference (display color or the like). (Step A6). On the other hand, if the result of the interference check process is a contact (see NO route in step A5), an interference occurrence mark 900 for displaying the representative point 100 on the monitor 13 is set to an attribute (display color or the like) indicating contact. Set (step A7).

  Further, the image data forming unit 18 acquires information on the screen enlargement ratio for displaying the object models 110 and 120 that are the interference check targets on the monitor 13 (step A8). Here, the image data forming unit 18 checks whether or not a screen enlargement rate different from the result of the previous interference check result display is input by the mouse 14 or the keyboard 15 (step A9).

If the input screen enlargement ratio is newly input by the mouse 14 or the keyboard 15 and is different from the previous time when the interference check result was displayed (see YES route in step A9), the overall control unit 17 is used. Then, the value of the image enlargement ratio recorded in the storage device 12 is updated to the value of the image enlargement ratio newly input this time (step A10).
Also, it is checked whether or not the newly set image enlargement ratio is within the predetermined range (step A11). If the newly set image enlargement ratio is within the predetermined range (see YES route in step A11), the input has been made. Based on the image enlargement ratio, the interference state shape generation means 20 calculates that the interference occurrence mark 900 for displaying the representative point 100 is displayed on the monitor 13 with a certain size (step A12).

Here, if the set image enlargement ratio is not within the predetermined range (see NO route in step A11), the interference state shape generation unit 20 uses a predefined interference state display shape (step A13).
On the other hand, when the screen enlargement rate is the same as when the interference check result display was performed last time (see NO route in step A9), the image data of the interference occurrence mark 900 used for the display of the representative point 100 last time is used. (Step A14).

The image data forming unit is configured so that the image data of the interference occurrence mark 900 set in this way is formed by the interference state shape generation means 20, and the interference occurrence mark 900 is displayed together with the image data of the object models 110 and 120. Image data is formed at 18 and displayed on the monitor 13 via the overall controller 17 (step A15).
Thus, according to the interference check result display method as the first embodiment of the present invention, the interference occurrence mark 900 is represented by the second sphere 102 which is larger than the first sphere 101 as the first shape and has a relatively high transparency. Since the approximate position of the point 100 can be grasped, the occurrence of interference and the interference occurrence position (representative point 100) can be easily recognized, and the micro transparency with the representative point 100 as the center of the shape is relatively low. By displaying the first sphere 101, it is possible to confirm the exact position of the representative point 100, thereby improving the work efficiency in the design using the three-dimensional CAD.

Further, a first sphere 101 having a relatively small transparency with the representative point 100 as the center of the shape is displayed, and the first sphere 101 has a relatively larger transparency than the first sphere 101 outside the first sphere 101. By displaying the two spheres 102, the position of the representative point 100 and a rough position with respect to the whole can be displayed at the same time, and the occurrence state of interference can be easily grasped.
Further, in the present interference check result display method, the interference state shape generating means 20 always sets the interference occurrence mark 900 to a constant size regardless of the display magnification (Zoom ratio) of the object models 110 and 120 that are interference check targets. Because of the display, in the design using 3D CAD, even if the screen display is repeatedly enlarged / reduced, the interference position (representative point 100) is not lost, and the state of occurrence of interference is easy even in the design work of a complicated device. Can grasp.

(B-1) Description of First Modification of First Embodiment FIG. 8 is a diagram showing a first modification of the interference check result display method according to the first embodiment of the present invention, and FIG. It is a front view which shows typically the structure of the interference generating mark.
As shown in FIG. 8A, the interference occurrence mark 800 of the first modification of the interference check result display method according to the first embodiment of the present invention is centered on the representative point 100 with a plurality of pieces 201 having a triangular shape. And each piece 201 is arranged by twisting the angle θ1 about the central axis 201a, and the center of the plurality of pieces 201 is an accurate position where interference occurs, that is, While showing the exact position of a representative point, the radial area which each piece 201 forms shows the approximate position where interference has occurred.

Further, the interference occurrence mark 800 is controlled by the interference state shape generating means 20 so that it can be visually recognized at a certain size on the monitor 13 which is a display device, and the object model 110, Even when the display magnification (Zoom ratio) of 120 is changed, the display is always displayed at a constant size.
Thus, according to the first modification of the interference check result display method as the first embodiment of the present invention, a plurality of pieces 201 having a triangular shape are arranged radially around the representative point 100, and each piece 201. In addition to the fact that the radial region formed by the rough region indicates the approximate position where interference occurs, the occurrence of interference and the position where the interference occurs (representative point 100) can be easily recognized, and the centers of the plurality of pieces 201 interfere with each other. By indicating the exact position where the error occurs, it is possible to confirm the exact position of the representative point 100, thereby improving the work efficiency in the design using the three-dimensional CAD, and the occurrence of interference. Can be easily grasped.

  The interference occurrence mark 800 is always displayed at a constant size by the interference state shape generation means 20 regardless of the display magnification (Zoom ratio) of the object models 110 and 120 that are the interference check targets. In the design using the original CAD, even when the screen display is repeatedly enlarged / reduced, the interference position (representative point 100) is not lost, and the occurrence state of the interference can be easily grasped even in the design work of a complicated apparatus. .

In the first modification of the interference check result display method according to the first embodiment, each piece 201 is arranged by twisting the angle θ1 about the central axis 201a. However, the present invention is not limited to this. Instead, when the pieces 201 are arranged radially around the representative point 100, the pieces 201 may be arranged so as to be twisted at different angles around the central axis 201a.
(B-2) Description of Second Modification of First Embodiment FIG. 8B shows a second modification of the interference check result display method as the first embodiment of the present invention. In the second modification shown in FIG. 8B, the interference occurrence mark 810 is configured by radially arranging a plurality of pieces 201 and 202 having a triangular shape with the representative point 100 as the center.

  The plurality of pieces 201 are respectively arranged by twisting the rotation angle θ2 about the central axis 201a, and the plurality of pieces 202 are arranged by twisting the rotation angle θ3 about the central angle 202a, respectively. The plurality of pieces 201 and 202 are alternately arranged radially with the representative point 100 as the center. That is, the plurality of pieces 201 and the pieces 202 are displayed so that the display effects are different from each other.

  As described above, according to the second modification of the interference check result display method as the first embodiment of the present invention shown in FIG. 8B, the same operational effects as those of the first embodiment described above can be obtained. In addition, the plurality of pieces 201 are arranged by twisting the rotation angle θ2 around the central axis 201a, and the plurality of pieces 202 are arranged by twisting the rotation angle θ3 around the center angle 202a, respectively. Since the plurality of pieces 201 and 202 are alternately arranged radially around the representative point 100, the visibility of the radial region formed by the plurality of pieces 201 and 202 is improved. It is possible to easily grasp the state of occurrence of interference.

(B-3) Description of Third Modification of First Embodiment FIG. 9 is a diagram showing a third modification of the interference check result display method according to the first embodiment of the present invention, and FIG. FIG. 9B is a side view of FIG. 9A schematically showing the configuration of the interference state display shape.
Also in the third modification shown in FIGS. 9A and 9B, the interference occurrence mark 820 is configured by radially arranging a plurality of pieces 201 having a triangular shape with the representative point 100 as the center. .

Here, the interference occurrence mark 820 shown in FIGS. 9A and 9B is also configured by radially arranging a plurality of pieces 201 around the representative point 100, and the plurality of pieces 201 are also arranged. As shown in FIG. 9B, they are arranged so as to incline at an angle α toward the line-of-sight direction (the left side in FIG. 9B).
As described above, the third modification of the interference check result display method according to the first embodiment of the present invention shown in FIGS. 9A and 9B is the same as each modification of the first embodiment described above. In addition to being able to obtain the action effect, the plurality of pieces 201 are also arranged so as to be inclined at an angle α toward the line-of-sight direction (the left side in FIG. 9B). Thus, it is possible to easily grasp the state of occurrence of interference.

(B-4) Description of Fourth Modification of First Embodiment FIGS. 10A to 10C are fourth and fifth modifications of the interference check result display method according to the first embodiment of the present invention. FIG. 10A is a front view schematically showing the configuration of the interference state display shape in the fourth and fifth modifications, and FIGS. 10B and 10C are the fourth and fifth, respectively. It is a figure which shows a modification, and both are side views of Fig.10 (a).

The interference occurrence marks 830 shown in FIGS. 10A and 10B are also configured by radially arranging a plurality of pieces 201 and 202 having a triangular shape with the representative point 100 as the center. The pieces 201 and 202 are alternately arranged radially around the representative point 100.
Here, the plurality of pieces 201 are arranged so as to be inclined at an angle α toward the line-of-sight direction (the left side direction in FIG. 10B), and the pieces 202 are It arrange | positions so that it may incline and have the angle (beta) toward a direction.

  As described above, the fourth modification of the interference check result display method as the first embodiment of the present invention shown in FIGS. 10A and 10B is the same as each modification of the first embodiment described above. In addition to being able to obtain operational effects, in the interference occurrence mark 830 shown in FIG. 10, a plurality of pieces 201 and 202 are alternately arranged radially around the representative point 100, and each piece 201. And 202 are arranged at different angles toward the line-of-sight direction, the visibility of the radial region formed by the plurality of pieces 201 and 202 can be improved, and the occurrence of interference can be reduced. It can be easily grasped.

(B-5) Description of Fifth Modification of First Embodiment Further, the interference state display shape shown in FIGS. 10A and 10C is the first of the interference check result display method according to the first embodiment of the present invention. 5 shows an interference state display shape as a modified example, and the interference occurrence mark 840 shown in FIGS. 10A and 10C also includes a plurality of pieces 201 having a triangular shape with the representative point 100 as the center. 201 ', 202, and 202' are arranged radially, and the plurality of pieces 201, 201, 202, and 202 'are alternately arranged radially about the representative point 100. .

Here, the plurality of pieces 201 are arranged so as to be inclined with an angle γ toward the line-of-sight direction (the left side direction in FIG. 10C). The piece 201 ′ disposed at the position to be pointed with respect to the point 100 is disposed so as to form the same plane passing through the representative point 100.
On the other hand, the plurality of pieces 202 are arranged so as to incline with an angle ε toward the line-of-sight direction (left side in FIG. 10C), and incline with these angles ε. The pieces 202 arranged in such a manner and the pieces 202 ′ arranged at the positions to be pointed with respect to the representative point 100 are arranged so as to form the same plane passing through the representative point 100. .

  As described above, the fifth modification of the interference check result display method as the first embodiment of the present invention shown in FIGS. 10A and 10C is the same as each modification of the first embodiment described above. In addition to obtaining operational effects, in the interference occurrence mark 840 shown in FIG. 10, a plurality of pieces 201 and 202 are alternately arranged radially around the representative point 100, and each piece 201. ′ And 202 ′ are arranged at different angles in the line-of-sight direction, the visibility of the radial region formed by the plurality of pieces 201 ′ and 202 ′ can be improved, and interference Can be easily grasped.

  In each modification of the first embodiment, the piece 201 (201 ′) and the piece 202 (202 ′) are each configured to have a triangular shape. The shape, pattern, color, and combination of individual pieces may be different from each other, and various modifications may be made without departing from the spirit of the present invention. Can be implemented.

  In the fourth modification and the fifth modification of the first embodiment, when the pieces 201 (201 ′) and 202 (202 ′) are alternately arranged radially around the representative point 100, the line of sight is respectively displayed. Although the angle with respect to the direction is changed, the present invention is not limited to this, and the shape, size, pattern, color, reflectance and the like of each piece may be changed. Various changes may be made without departing from the spirit of the present invention, such as changing every other (201 ′) and 202 (202 ′), and in particular, arranging with some regularity. desirable.

Each piece 201 (201 ′), 202 (202 ′) may be displayed as a moving image that rotates about each central axis 201a 202a, or each piece 201 (201 ′), 202 (202 ′). ) May be displayed as moving images so as to rotate around the representative point 100, and various modifications can be made without departing from the spirit of the present invention.
In the third to fifth modifications of the first embodiment, the pieces 201 (201 ′) and 202 (202 ′) are arranged so as to incline toward the line-of-sight direction. The embodiment is not limited thereto, and the pieces 201 (201 ′) and 202 (202 ′) arranged so as to be inclined in the line-of-sight direction are shown in FIGS. 8 (a) and 8 (b). As in the first and second modifications of the first embodiment, they may be twisted around the central axes 201a and 202a, respectively, and at this time, the pieces 201 (201 ′) and 202 may be arranged. (202 ′) may be configured by changing the shape, size, pattern, color, reflectance and the like of each piece. Further, these pieces 201 (201 ′) and 202 (202 ′) may be replaced by 1 A range that does not depart from the gist of the present invention, such as arranging every other May be modified in various ways, in particular, it is desirable to arrange to have some regularity.

Furthermore, in each modification of the first embodiment, a plurality of pieces are arranged on the radiation centering on the representative point in order to display the approximate position of the representative point. However, the present invention is not limited to this. For example, a concentric or spiral shape centering on the representative point may be arranged, and various modifications can be made without departing from the spirit of the present invention.
(C) Description of Second Embodiment Now, in the design using the three-dimensional CAD system, the result of performing the interference check process between the object models existing in the virtual three-dimensional space is displayed on the display device, and the object model is displayed. When grasping the positional relationship between them, it is important not only whether there is contact or interference between the object models, but also whether the object models are within a specific distance or range. In some cases, an interference check result display method for expressing the distance between closest points or the relationship between closest points between object models will be described with reference to the drawings.

  FIGS. 11 to 13 show an interference check result display method as a second embodiment of the present invention. FIGS. 11A and 11B both show the interference check result display method, and FIG. FIGS. 13A and 13B are flowcharts for explaining the interference check result display method, and are diagrams schematically showing a part of the interference state display shape shown in FIGS. 11A and 11B. is there.

As shown in FIG. 11A, an interference state display shape 700 as a shape indicating an interference state used in the present interference check result display method includes a rectangular shape 300, a contact point mark 310, an interference region 320, a designated region 330, It is a variable shape constituted by the other region 340 and the current value 350.
The rectangular shape 300 shows the relationship between the closest points between the object models. In this rectangular shape 300, a contact point mark 310, which is an index of the position where the contact occurs between the object models, has a rectangular shape 300. It is formed to cut the short side vertically.

Further, in the rectangular shape 300, a region between the contact point mark 310 and one end of the rectangular shape 300 (the left end in FIG. 11A) is formed as an interference region 320, and an index of a range in which interference occurs between objects. Is functioning as
Further, a designated area 330 that is an index of a predesignated range is formed in the area between the contact point mark 310 and the other end of the rectangular shape 300 (the right end in FIG. 11A) in the rectangular shape 300. Has been. This designated area 330 is an area that is preset as necessary to determine whether the closest points between the object models that are subject to interference check are within a specific distance or range, are variable, and It is formed as a movable region.

  Here, that the designated area 330 is variable indicates that the range of the designated area 330 can be arbitrarily set. For example, the designated area 330 is set as a section having a distance between closest points of 30 mm to 100 mm. The distance between the closest points between the object models can be set as a section between 10 mm and 20 mm, and the distance between the closest points between 30 mm and 100 mm and the section between 10 mm and 20 mm can be monitored. 13 indicates that the width of the shape of the designated area 330 displayed on 13 (length in the long axis direction of the rectangular shape 300) is different.

  In addition, that the designated area 330 is movable means that the position of the designated area 330 can be arbitrarily set. For example, the interval between the closest points between the object models is 90 mm to 100 mm, and 10 mm. In the section of ˜20 mm, the width of the shape of the designated area 330 displayed on the monitor 13 (the length in the long axis direction in the rectangular shape 300) is the same, but the positions where these designated areas 330 exist are different. Is shown.

  Further, in the rectangular shape 300, a current value 350 indicating the relative positional relationship of the closest point between the object models displayed on the monitor 13 is displayed. The current value 350 is a variable shape that represents the relationship between the closest points between the object models as a result of the interference check processing by the interference check unit 19, and is associated with the movement / rotation of the object model by the mouse 14 or the keyboard 15. In addition, the inside of the rectangular shape 300 is moved in the direction of the long axis [the left-right direction in FIG. 11 (a)].

  Here, in the interference state display shape 700 shown in FIG. 11A, in the region other than the interference region 320 in the rectangular shape 300, the closer the current value 350 is to the interference region 320, that is, the closer to the contact point mark 310, the closer to the object model. This indicates that the distance between the contact points is short, and that the distance between the closest contact points between the object models increases as the current value 350 moves away from the interference region 320, that is, the contact point mark 310.

Further, the contact point mark 310, the interference area 320, the designated area 330, the area 340 indicating others, and the current value 350 are displayed in different display colors, patterns, reflectances, and the like.
The interference state display shape 700 described above is formed by the interference state shape generation means 20, and the image data forming unit 18 forms image data to be displayed on the monitor 13 together with the image data of the object model. The image data is displayed on the monitor 13 by the overall control device 17.

That is, in the present embodiment, the image data forming unit 18 and the overall control unit 17 correspond to the display control unit 4 shown in FIG.
Since the interference state display shape 700 of the second embodiment of the present invention is configured as described above, when the object model is moved / rotated using the mouse 14 or the keyboard 15 while performing the interference check process, the object model is displayed. The relationship between the closest points of the rectangular shape 300 is formed by the interference state shape generation unit 20 and the positional relationship between the contact point mark 310 and the designated region 330 in the rectangular shape 300 and the current value 350 is displayed together with the object model to be checked for interference. The image data is formed by the image data forming unit 18 and displayed on the monitor 13.

Here, the interference check result display method according to the second embodiment of the present invention will be described with reference to the flowchart (step B1 to step B11) shown in FIG.
When an instruction to perform interference check processing is received by input from the mouse 14 or keyboard 15 by the user (step B1), first, an object model to be moved / rotated is selected from the currently selected one. It is confirmed whether or not to change to another object model (step B2).

  When the object model to be moved / rotated is changed (see YES route in step B2), information on the designated area 330 is acquired from the object model to be moved / rotated by the overall control unit 17 or the like (step B3). Based on this information, the relative size of the designated region 330 in the interference state display shape 700 when the interference state display shape 700 is displayed on the monitor 13 is determined (step B4). Here, information related to the designated area 330 may be input using the mouse 14, the keyboard 15, or the like.

Based on the result of the interference check process by the interference check unit 19, the interference state shape generating unit 20 can cause the state of the contact point mark 310, the interference region 320, and the designated region 330 on the rectangular shape 300 to be glanced. 700 is formed (step B5), and the process returns to step B1 again to wait for an instruction input by the user.
On the other hand, when the object model to be moved / rotated is not changed (see NO route in step B2), it is confirmed whether the object model is to be moved / rotated (step B6). (See the YES route in step B6), the object model existing in the three-dimensional space displayed on the monitor 13 is moved / rotated using the mouse 14 or the keyboard 15 (step B7).

  When the object model is moved / rotated using the mouse 14 or the keyboard 15 or the like, the interference check unit 19 performs an interference check process (step B8). As a result of the interference check process by the interference check unit 19, information on the representative point and the position of the closest point is acquired (step B9). That is, as a result of the interference check processing by the interference check unit 19, information on the position of the representative point is acquired when interference or contact occurs, and when there is no interference or contact, the closest point in each object model is acquired. Is acquired.

Further, the information on the representative point or the nearest point is sent to the image data forming unit 18, and the current value 350 in the interference state display shape 700 is displayed on the monitor 13 by the interference state shape generating unit 20 in the image data forming unit 18. Are calculated (step B10).
Based on the information thus calculated, the interference state shape generation unit 20 forms the interference state display shape 700, and the image data forming unit displays the interference state display shape together with the image data of each object model. After the image data is formed at 18 and displayed on the monitor via the overall control unit 17 (step B11), the process returns to step B1 again to wait for an instruction input by the user.

  As described above, according to the interference check result display method as the second embodiment of the present invention, the current value 350 is displayed together with the contact point mark 310 and the interference area 320, so that the object until interference or contact occurs is displayed. The distance between the models can be glanced.For example, even when the object model is moving continuously, the positional relationship between the object models can be easily grasped, and the appearance of interference can be observed continuously. Can be monitored.

  Further, by displaying the current value 350 together with the contact point mark 310, the designated area 330, and the interference area 320, whether or not the closest point between the object models that are interference check targets exists within a specific distance range. For example, even when there is a need to maintain a certain distance between the object models that are subject to interference check, the positional relationship between the object models can be easily grasped. can do.

  In the second embodiment, based on the result of the interference check by the interference check unit 19, the relative positional relationship of the closest point between the object models based on the contact point mark 310, the interference region 320, the designated region 330, and the current value 350. However, the present invention is not limited to this, and the distance between nearest contacts may be displayed, and various modifications can be made without departing from the spirit of the present invention.

  Further, in the second embodiment, in the interference state display shape 700, the current value 350 indicates that the distance between the closest points between the object models becomes longer toward the right side in FIG. The display method is not limited by the direction of movement of the value 350, such as up / down / left / right or diagonal, but as shown in FIG. 11B, in the interference state display shape 700, the current value 350 is shown in FIG. ) The distance between the closest points between the object models may be increased as going to the middle left side, and various modifications can be made without departing from the spirit of the present invention.

Furthermore, in the second embodiment, the interference state display shape is formed in a planar rectangular shape, but is not limited thereto, and various modifications are made without departing from the spirit of the present invention. Can do.
For example, the interference state display shape may be three-dimensionally displayed as an interference state display shape 710 shown in FIG. 11B, or as interference state display shapes 700 ′ and 710 ′ shown in FIG. The distance in the short axis direction may be increased as the distance between the closest points between the object models increases. In addition, in 700, 700 ', 710, 710' shown in FIGS. 13A and 13B, the designated area 330 is omitted for convenience.

Further, as a means for indicating the perspective direction in the interference state display shape, a similar effect may be given by applying a perspective on the display (displaying smaller as it goes deeper).
Furthermore, as shown in FIGS. 14 and 15, the interference state display shape may be formed in a circular shape. 14 and 15 are also diagrams showing a modification of the interference check result display method according to the second embodiment of the present invention. FIG. 14A is a diagram showing the interference state display shape, and FIG. FIGS. 15B and 15C are diagrams showing examples of display, and FIG. 15 is a diagram for explaining the interference check result display method.

The interference state display shape 600 shown in FIG. 14 and FIG. 15 is configured by making the interference state display shape in the interference check result display method of the present invention shown in FIG. 11 circular, with the center of the circle as an axis. An interference area 320 ′, a designated area 330 ′, other areas 340 ′, etc. are formed in a fan shape.
FIG. 14B shows a state in which the designated area 330 ′ is movable in the interference state display shape having such a circular shape, and the position of the designated area 330 ′ can be arbitrarily changed. It shows how it can be done. FIG. 14C shows a state in which the designated area 330 ′ is variable in the interference state display shape 600 having a circular shape, and it is possible to arbitrarily change the range of the designated area 330 ′. Show.

FIGS. 15A to 15C are diagrams showing how the interference check result display method according to the second embodiment of the present invention is displayed on the monitor 13, respectively. The interference state display shape is displayed together with the object models 110 and 120 that are interference check targets.
When the article models 110 and 120 that are interference check targets are sufficiently separated from each other, as shown in FIG. 15A, in the interference state display shape, the current value 350 ′ is located in the other region 340 ′. As the object models 110 and 120 approach each other, they move clockwise toward the contact point mark 310 ′.

When the object models 110 and 120 approach and the closest point distance between the object models 110 and 120 reaches a preset range, as shown in FIG. The current value 350 'is located in the designated area 330'.
Further, when the object models 110 and 120 approach and interference occurs between the object models 110 and 120, as shown in FIG. 15C, the current value 350 ′ is the interference region 320 ′ in the interference state display shape. Located in. In this case, the interference state display shape shown in FIG. 5 is displayed at the interference occurrence position.

(D) Description of Third Embodiment FIGS. 16 to 19 are diagrams showing an interference check result display method as a third embodiment of the present invention, and FIG. 16 is an interference check as a third embodiment of the present invention. FIG. 17A is a diagram schematically illustrating the whole of FIG. 17B, and FIG. 17B is a diagram schematically illustrating the third embodiment of the present invention. 18A is a top view of FIG. 18B, FIG. 18B is a front view showing a method of displaying an interference check result when a plurality of representative points exist, and FIG. 18C is FIG. FIG. 19A is a diagram showing a list for displaying a plurality of representative points, and FIG. 19B is a diagram showing an interference check result display method when there are a plurality of representative points.

As shown in FIG. 16, the interference check result display method according to the third embodiment of the present invention is the representative point 100 when the representative point 100 is formed by the result of the interference check process between the object models 110 and 120. 100 is displayed as a specific point (gaze point) on the monitor 13 as a display device together with the cross section 450.
Here, the cross section 450 is calculated on the basis of the viewpoint 410 for viewing the representative point 100 in the virtual three-dimensional space and the object group region 440 that is the region in which the object models 110 and 120 occupy the three-dimensional space. And is formed as a plane passing through the representative point 100 and orthogonal to a straight line connecting the viewpoint 410 and the representative point 100.

  Further, the space between the cross section 450 and the viewpoint 410 is not displayed on the monitor 13, and the area on the opposite side of the cross section 450 from the viewpoint 410 (right side in FIG. 16) is displayed on the monitor 13. The cross section 450 corresponds to a shape indicating the interference occurrence state. In the present embodiment, the overall control unit 17 and the image data forming unit 18 correspond to the display control unit 6 shown in FIG. 3, and the interference state shape generating means 20 further calculates the cross section shown in FIG. The image data forming unit 18 corresponds to the distinguishable display control unit 61 as well as the unit 62.

In FIG. 16, the representative point 100 is indicated by the interference occurrence mark 900 shown in FIG.
Further, in this interference check result display method, as shown in FIG. 17A, the viewpoint 410 can be moved on a spherical surface with the representative point 100 as the center. Also in this case, as shown in FIG. 17B, the space between the cross section 450 and the viewpoint 410 is not displayed on the monitor 13, and the area opposite to the viewpoint 410 with respect to the cross section 450. Is displayed on the monitor 13 by the interference state shape generation means 20.

Here, when the viewpoint 410 is moved on the spherical surface with the representative point 100 as the center by using the mouse 14 or the keyboard 15, image data of the cross section 450 passing through the representative point 100 is formed by the image data forming unit 18, It is displayed on the monitor 13 via the control unit 17.
In FIGS. 17A and 17B, the representative point 100 is indicated by the interference occurrence mark 900 shown in FIG. 5A.

Further, when performing an interference check process on a complex object model or an interference check process between a plurality of object models, there may be a case where interference or contact occurs at a plurality of locations and there are a plurality of representative points.
As shown in FIGS. 18A to 18C, when there are a plurality of representative points 100A and 100B in the virtual three-dimensional space, the contact / interference state at the representative point 100A is confirmed. When confirming the contact / interference state at the representative point 100B, the gazing point is changed from the representative point 100A to the representative point 100B using the mouse 14 or the keyboard 15.

  Further, in order to be able to discriminate the designated gazing point (representative point 100B) from the other representative point 100A, the interference occurrence mark 900 indicating the representative point 100B is replaced with the interference occurrence mark 900 indicating the other representative point 100A. It is displayed so as to be distinguishable by means such as changing the display color. That is, it is preferable to display the interference occurrence mark or the like shown in FIG. 5A or FIGS. 8 to 10 while changing the color, size, shape, or the like of the interference occurrence mark at the gazing point.

18 and 19, the interference occurrence mark for displaying the representative point 100 is omitted for convenience.
When a plurality of representative points are generated, the representative point 100 for confirming the interference state, that is, the representative point 100 to be a gazing point is selected from the plurality of representative points 100. Here, it may be set in advance so that all the representative points 100 are automatically designated in succession, or a plurality of representative points 100 are displayed in a list as shown in FIG. A specific point may be designated as a specific point (gaze point).

  Here, the list shown in FIG. 19A displays the result of the interference check process as a hierarchical structure. For example, a part c and a part e are displayed as parts that interfere with the part a. A representative point 100A is displayed as a representative point that interferes with the component c. Further, representative points 100B, 100C, and 100D are displayed as representative points subjected to interference check processing with the component e.

Further, an appropriate solid such as a cube, a rectangular parallelepiped, or a sphere may be arranged in the virtual three-dimensional space, and the representative points 100 may be narrowed down on the condition that it is inside the solid.
After narrowing down the representative point 100 to be the gazing point, any one of these representative points 100 is selected as the gazing point using the mouse 14 or the keyboard 15.
Here, in order to confirm the contact / interference state through the monitor 13, the position of the viewpoint remains unchanged, the gazing point is changed, the gazing point is changed, and the viewpoint is moved along with the change of the gazing point, The image data forming unit 18 generates an image for checking the interference check result, and this image is displayed on the monitor 13 via the overall control unit 17.

Here, when the image data is formed by the image data forming unit 18, when the gazing point is changed to another representative point 100, a visual section on the display is calculated while calculating a cross section on the display at the representative point 100 to be changed. The display is moved and displayed while maintaining specific constraint conditions as well as general continuity.
That is, when the representative point 100A is set as the gazing point and the next gazing point is changed to the representative point 100B, when the state of interference at these gazing points is confirmed by the cross section 450, the interference at the representative point 100A. The image of the cross section 450 for confirming the interference is not displayed next to the image of the cross section 450 for confirming the interference, but the distance between the representative points 100 and the region of the object model group shown in the virtual three-dimensional space is not displayed. The section 450 is moved and displayed while maintaining visual continuity based on the step size calculated from the enlargement ratio of the image and the like.

For example, when the distance between the representative point 100A and the representative point 100B is 200 mm and the image enlargement ratio is 1, the point of gazing from the representative point 100A to the representative point 100B is displayed. An image of the cross section 450 is formed so that the movement amount is 20 mm, and when the enlargement ratio of the image is 0.8, the image is formed so that the movement amount is 50 mm.
Further, depending on the enlargement ratio of the image, it is desirable that the enlargement ratio is once returned to a predetermined value and the point of interest is moved and displayed, and then returned to the original enlargement ratio.

  With the above configuration, the state of interference at the representative point 100 is confirmed by displaying the cross section 450 passing through the representative point 100 on the monitor 13. Further, when there are a plurality of representative points 100, the interference state is confirmed by moving the gazing point and displaying the cross-section 450 at each of the plurality of representative points 100. Further, when displaying the interference state at each representative point 100 by moving the gazing point, the state of contact / interference is confirmed by moving and displaying the cross section 450 while maintaining visual continuity.

Here, as shown in FIG. 19B, the process of checking the state of interference by changing the gazing point from the representative point 100A to the representative point 100B is used using the flowchart (steps C1 to C17) shown in FIG. I will explain.
First, for example, from the list of representative points that interfere with each other displayed on the monitor 13, the representative point 100 </ b> B as the point of interest is selected using the mouse 14 or the keyboard 15 (step C <b> 1). The distance between the current gazing point (representative point 100A) and the selected gazing point (representative point 100B) is calculated (distance between representative points), and is displayed in the cross section 450. Image data of the area occupied by the group is acquired (step C2).

Further, the image data forming unit 18 and the overall control unit 17 obtain data of the image enlargement rate of the image data currently set to be displayed on the monitor 13, and this image enlargement rate is stored as an image enlargement rate A. 12 (step C3).
Further, it is determined whether the acquired image enlargement ratio A is within a preset default value range (step C4). If the image enlargement ratio A is not within the default value range (NO route of step C4). (See), the step size is calculated from the image enlargement ratio A (step C6).

  Here, the image data forming unit 18 changes the image enlargement ratio based on the step size calculated in step C6 (step C7), and forms image data (step C8). It is determined whether or not the newly set image enlargement ratio is within the predetermined range (step C9). If this enlargement ratio is not within the predetermined range (see NO route in step C9), the process returns to step C7 again.

When the image enlargement ratio is within the predetermined range (see YES route in step C4) or within the predetermined range (see YES route in step C9), the current gazing point and selection calculated in step C2 are selected. Based on the distance to the gazing point and the current image enlargement ratio, a moving step size for moving and displaying the cross section 450 is calculated (step C5).
After moving the cross section 450 according to the moving step width (see step C10), the image data forming unit 18 forms image data of the cross section 450 (step C11). Further, it is determined whether or not the distance between the representative point 100A and the representative point 100B (the distance between the representative points) calculated in step C2 has been moved (step C12). Step C12 is repeated (refer to the NO route in step C12).

  When the cross section 450 moves by the distance between the representative points and reaches the representative point 100B that is the point of interest of the movement destination (see YES route in step C12), the current image enlargement ratio and the image enlargement ratio A set in step C3 Are compared (step C13). If they are not equal (see NO route in step C13), the reverse steps of the previous steps C6 to C9 are repeatedly executed.

  That is, the step size is calculated from the current image enlargement rate (step C14), and the image data forming unit 18 changes the image enlargement rate based on the step size calculated in step C14 (step C15). Data is formed (step C16). Here, it is determined whether or not the current image enlargement ratio is equal to the image enlargement ratio A acquired in step C3 (step C17). If the current image enlargement ratio is not equal to the image enlargement ratio A (in step C17). Refer to the NO route), and the process returns to step C15 again.

When the current image enlargement rate is equal to the image enlargement rate A (see YES route in step C13) or when it is equal to the image enlargement rate A (see YES route in step C17), it is displayed on the monitor 13. The interference state at the representative point 100B is displayed on the display screen at the same enlargement ratio as before the change of the gazing point, and the movement display of the gazing point is ended.
As described above, according to the content of the third embodiment of the present invention, the representative point 100 is designated as the gazing point, and this gazing point is displayed together with the cross section 450, thereby indicating the contact / interference state at the representative point 100. It can be easily grasped.

  Further, even when a plurality of representative points 100 are generated as a result of the interference check process, a plurality of representative points 100 are displayed in a list, and the representative point 100 for checking the interference state is designated as a gazing point from the list. By displaying this gazing point so as to be distinguishable from other representative points 100, the state of interference can be easily confirmed even in an object model having a complicated shape, and the efficiency of design work can be improved.

  Further, when a plurality of representative points 100 are generated as a result of the interference check process, the cross section 450 is maintained in a state in which visual continuity is maintained when the gazing point is moved and the interference state at each representative point 100 is displayed. By moving and displaying, the state of interference can be easily grasped, the current position in the image displayed on the monitor 13 is not lost, and the interference is efficiently performed even when a plurality of representative points 100 are present. The state can be confirmed.

  When the cross section 450 is displayed and the interference state at the representative point 100 is confirmed, the image data forming unit 18 is moved each time the viewpoint 410 is moved on the spherical surface with the representative point 100 as the center using the mouse 14 or the keyboard 15. Since the cross section 450 is displayed while being calculated, the interference state which is originally prevented from being displayed by other parts and can not be displayed on the monitor 13 can be displayed. In addition, it is possible to grasp the state of occurrence of interference at the design stage and contribute to cost reduction by reducing the trial production process.

  Further, even when a plurality of representative points 100 are generated as a result of the interference check process, the representative point 100 is displayed using the mouse 14 or the keyboard 15 when the cross section 450 is displayed to check the interference state at the representative point 100. Each time the viewpoint 410 is moved on the spherical surface as the center, the image data forming unit 18 displays the cross section 450 while calculating the cross section 450. Therefore, the representative point 100 existing inside a complicated device or apparatus can be easily confirmed. be able to.

  Furthermore, when a plurality of representative points 100 are generated as a result of the interference check process, when the interference state at each representative point 100 is displayed by moving the gazing point, once the image enlargement ratio is not within the predetermined range, The gazing point is moved and displayed with the enlargement ratio restored to the default value, and after the movement display is completed, the original image enlargement ratio is restored, so that the interference state is always displayed on the monitor 13 at the optimum image enlargement ratio. It is possible to make it easier to grasp the interference state.

(E) Others In each of the above-described embodiments, the three-dimensional CAD system 16 is movable on the computer 12. However, the present invention is not limited to this, and as shown in FIG. 21, it can be moved on another computer. However, various modifications can be made without departing from the spirit of the present invention.
FIG. 21 is a diagram showing a hardware configuration and a functional configuration of an interference check result display device as a modification of each embodiment of the present invention. However, in the design using a three-dimensional CAD system, it differs for each target device / device. Since modeling and placement of parts are often performed, as shown in FIG. 21, an object model is created by a three-dimensional CAD system 16 built on another computer (not shown). Data may be taken into the computer 11 ′ in the form of a file or the like via the design object data 10, and the interference check unit 19 may perform an interference check.

In such a case, in the computer 11 ′, a virtual three-dimensional space is developed in a memory (not shown) or the like by the interference check unit 19, the image data forming unit 18, and the like. Data of the object model captured via the object data 10 is handled.
In the above embodiment, the interference check method described in JP-A-9-27046, JP-A-7-134735 and JP-A-8-77210 is used for the interference check process. The present invention is not limited to this, and any interference check method capable of performing interference check processing at high speed can be implemented with various modifications without departing from the spirit of the present invention.

It is a principle block diagram of the related technology of this invention. It is a principle block diagram of the present invention. It is another principle block diagram of the present invention. It is a figure which shows the hardware constitutions and functional structure of the interference check result display apparatus concerning each embodiment of this invention. (A), (b) is a figure which shows the interference check result display method as 1st Embodiment of this invention. (A), (b) is a figure which shows the interference check result display method as 1st Embodiment of this invention. It is a flowchart for demonstrating the interference check result display method as 1st Embodiment of this invention. (A), (b) is a figure which shows the 1st and 2nd modification of the interference check result display method as 1st Embodiment of this invention, respectively. (A), (b) is a figure which shows the 3rd modification of the interference check result display method as 1st Embodiment of this invention. (A)-(c) is a figure which shows the 4th and 5th modification of the interference check result display method as 1st Embodiment of this invention. (A), (b) is a figure which shows the interference check result display method as 2nd Embodiment of this invention. It is a flowchart for demonstrating the interference check result display method as 2nd Embodiment of this invention. (A), (b) is a figure which changes typically a part of interference state display shape shown to Fig.11 (a), (b), respectively, and shows it typically. (A)-(c) is a figure which shows the modification of the interference check result display method as 2nd Embodiment of this invention, respectively. (A)-(c) is a figure for demonstrating the interference check result display method as 2nd Embodiment of this invention, respectively. It is a figure for demonstrating the interference check result display method as 3rd Embodiment of this invention. (A), (b) is a figure for demonstrating 3rd Embodiment of this invention. (A)-(c) is a figure for demonstrating 3rd Embodiment of this invention, respectively. (A), (b) is a figure for demonstrating 3rd Embodiment of this invention. It is a flowchart for demonstrating 3rd Embodiment of this invention. It is a figure which shows the hardware constitutions and functional structure of the interference check result display apparatus as a modification of each embodiment of this invention. It is a figure which shows the conventional interference check result display method.

Explanation of symbols

1, 3, 5 Interference check unit 2, 4, 6 Display control unit 61 Discrimination display control unit 62 Cross section calculation unit 7 Display device 11, 11 'Computer 12 Storage device 13 Monitor (display device)
14 Mouse 15 Keyboard 16 Three-dimensional CAD system 17 Overall control unit 18 Image data forming unit 19 Interference check unit 20 Interference shape generating means 100, 100A, 100B Representative point 101 First sphere (first shape)
102 Second sphere (second shape)
110, 120 Object model (object)
201, 201 ', 202, 202' Piece 310, 310 'Contact point mark 320, 320' Interference area 330, 330 'Designated area 350, 350' Current value (variable shape)
410 Viewpoint 420 Display area 440 Object group area 450 Cross section 700, 710 Interference state display shape 800, 810, 820, 830, 840, 900 Interference occurrence mark

Claims (8)

An interference check step of performing an interference check process between objects existing in the virtual three-dimensional space and storing the interference check result in a storage device;
A display device that displays a relative positional relationship between the objects together with at least one of an index of a position where contact occurs between the objects, an index of a range where interference occurs, and an index of a range specified in advance An interference check result display method characterized by comprising a display step to be displayed on the screen. An interference check unit for performing interference check processing between objects existing in the virtual three-dimensional space;
A display device that displays a relative positional relationship between the objects together with at least one of an index of a position where contact occurs between the objects, an index of a range where interference occurs, and an index of a range specified in advance An interference check result display device characterized by comprising a display control unit for displaying on the screen. On the computer,
An interference check function for performing interference check processing between objects existing in a virtual three-dimensional space;
An indicator indicating a relative positional relationship between the objects is displayed on the display device together with at least one of a distance in a range where contact occurs between the objects, a distance in a range where interference occurs, and a predetermined distance range. A computer-readable recording medium on which an interference check result display program is recorded, wherein a display control function for displaying is executed. An interference check step of performing an interference check process between objects existing in the virtual three-dimensional space and storing the interference check result in a storage device;
A selection step of selecting any one of a plurality of representative points at the time of contact / interference between the objects as a specific point;
A specific point display step for displaying the specific point on the display device so as to be distinguishable from the other representative points;
A cross-section calculating step for calculating a cross-section based on a viewpoint for viewing the specific point in the virtual three-dimensional space and a region where an object occupies the virtual three-dimensional space;
An interference check processing result display method, comprising: a cross-section display step for displaying the cross-section together with the specific point on a display device.   5. The interference check result display method according to claim 4, wherein when the viewpoint is moved on a spherical surface centered on the specific point, the cross section is recalculated and displayed together with the specific point.   When the designation as a specific point is changed to another representative point, it is possible to move and display while maintaining a specific constraint condition together with visual continuity while calculating the cross section on the display at the representative point of the change destination. The interference check result display method according to claim 4, wherein the interference check result is displayed. An interference check unit that executes an interference check process between objects existing in the virtual three-dimensional space, and stores the interference check result in a storage device;
A selection unit that selects any one of the plurality of representative points at the time of contact / interference between the objects as a specific point;
A specific point display control unit that displays the specific point on the display device so as to be distinguishable from the other representative points;
A cross-section calculation unit that calculates a cross-section based on a viewpoint for viewing the specific point in the virtual three-dimensional space and an area in which the object occupies the virtual three-dimensional space;
An interference check processing result display device, comprising: a display control unit that displays the cross section on a display device together with the specific point. On the computer,
An interference check step of performing an interference check process between objects existing in the virtual three-dimensional space and storing the interference check result in a storage device;
A selection step of selecting any one of a plurality of representative points at the time of contact / interference between the objects as a specific point;
A specific point display step for displaying the specific point on the display device so as to be distinguishable from the other representative points;
A cross-section calculating step for calculating a cross-section based on a viewpoint for viewing the specific point in the virtual three-dimensional space and a region where an object occupies the virtual three-dimensional space;
A computer-readable recording medium on which an interference check result display program is recorded, wherein a cross-section display step of displaying the cross-section on a display device together with the specific point is executed.

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