JP4816771B2 - Design data generator - Google Patents

Description

  The present invention relates to a design data generation apparatus and a design data generation method, and more particularly to a design data generation apparatus and a design data generation method for generating new design data of an article by performing shape deformation processing on an existing part shape.

  When designing a new part, a CAD (Computer-Aided Design) apparatus may be used to modify existing part data. For example, while maintaining the cross-sectional shape of a part having a shape as shown in FIG. 36 (a), the ridgeline of the original shape is input as a new ridgeline, and the original cross-sectional shape along the new ridgeline is input. And a method of obtaining a new shape as shown in FIG.

  Further, when designing an LSI layout pattern, there has been a method of efficiently redesigning by replacing functional cells that realize functional units of a designed layout pattern (see, for example, Patent Document 1). In addition, by extracting the cross-sectional shape from the shape of the existing 3D part and performing basic operations such as extruding, sweeping, rotating, cutting, mirror copying, etc. on the shape template classified by shape pattern, There has been a method for generating a shape (see, for example, Patent Document 2).

JP-A-9-36238 JP-A-11-45352

  In some cases, it may be desirable to change the new part shape to a shape that cannot be constructed while retaining the cross-sectional shape of the existing part. In that case, it was necessary to change the cross-sectional shape of each end and rearrange the deformed cross-sectional shapes to obtain a three-dimensional shape.

  However, it is difficult to generate a new three-dimensional shape imaged by the operator from the deformation operation in each cross-sectional shape, and trial and error have been performed.

  Further, since there is no method for specifying how to arrange the cross-sectional template shape in the new three-dimensional shape by a method in accordance with the image of the operator, the existing three-dimensional part shape cannot be effectively used.

  Accordingly, an object of the present invention is to provide a design data generation method and a design data generation apparatus that can efficiently generate a new three-dimensional shape imaged by an operator from an existing three-dimensional part shape. .

Since the present invention is to achieve the above object, a design data generating apparatus for generating a new design data of the part by performing deformation processing on the shape of the existing parts, on the ridge of the existing parts of the shape and the node assigning means for assigning node point, the existing parts and move source line definition means for defining a moving source line one ridge line shape, the existing parts of the cross-sectional shape due to the normal plane of the nodal point of the movement source line A normal plane cross-sectional shape creating means, a movement destination line designating means for designating a movement destination line as a movement destination of the movement source line, and a fixed ridge line designating means for designating a fixed ridge line from the existing part shape; For a normal plane cross-sectional shape that intersects the fixed ridge line, a similar deformed cross-sectional shape is created by performing a similar deformation to move a node belonging to the movement source line to a corresponding point on the movement destination line And a rearrangement means, and a cross-sectional shape rearrangement means for rearranging a normal plane cross-sectional shape that does not intersect the fixed ridge line to a corresponding point on the destination line, and the rearranged similar deformed cross-sectional shape A new part shape defined by a series of normal plane cross-sectional shapes is generated.

  According to this configuration, it is possible to efficiently design a new part shape accompanied by a similar deformation of the normal plane cross-sectional shape of the existing part shape.

Further, a design data generating apparatus for generating a new design data of the part by performing deformation processing on the shape of the existing parts, the node adding means for adding the section point on the edge line of the existing parts of the shape And one of the ridge lines of the existing part shape is designated as a first movement source line, and one of the ridge lines other than the first movement source line is defined as a second movement source line. A normal plane cross-sectional shape creating means for creating a cross-sectional shape of the existing part by a normal plane at the node on the first movement source line, and a first movement that is a destination of the first movement source line With respect to a normal plane cross-section shape that designates a destination line, designates a second destination line that is a destination of the second source line, and intersects the second source line The nodes belonging to the first movement source line on the first movement destination line. Similar deformed cross-sectional shape creation and rearrangement means for performing rearrangement by performing similar deformation for moving to a corresponding point and moving a node on the second movement source line to a corresponding point on the second movement destination line And cross-sectional shape rearranging means for rearranging a normal plane cross-sectional shape that does not intersect the second movement source line to a corresponding point on the first movement destination line, and the relocated similar A new part shape defined by a series of the deformed sectional shape and the normal plane sectional shape is generated.

  According to this configuration, it is possible to efficiently perform a new part shape accompanied by a similar deformation of a normal plane cross-sectional shape that moves two ridge lines of an existing part shape.

Further comprising a shape node assigning means for assigning shape node in the method plan sectional on shape, in the similar deformation, the shape node, the destination line from the node belonging to the movement source line of the method plan sectional shape A shape node movement vector obtained by multiplying the distance from the fixed ridge line to the shape node by the distance obtained by dividing the distance from the fixed ridge line to the shape node by the distance from the node belonging to the movement source line to the corresponding point on the movement destination line. The normal plane cross-sectional shape is deformed in a similar manner.

  According to this configuration, even when the existing part shape is provided with a curved surface, it is possible to efficiently design a new part shape by performing similar deformation of the curved surface.

Also, when moving the two edges of the existing component shape, with a shape node assigning means for assigning shape node in the method plan sectional on shape, in the similar deformation, the shape node, the first A first movement vector from a node belonging to the movement source line to a corresponding point on the first movement destination line, and a distance from the second movement source line to the shape node as the first movement source line Move in accordance with a first shape node movement vector multiplied by a ratio divided by the distance from the node to which it belongs to the corresponding point on the first destination line, and further from the node belonging to the second movement source line to the second Corresponding to the second movement vector to the corresponding point of the movement destination line, the distance from the first movement source line to the shape node on the second movement destination line from the node belonging to the first movement source line Second shape node multiplied by the ratio divided by the distance to the point Moving along motion vector, the method planar cross-sectional shape characterized by similar deformation.

  According to this configuration, when the two ridge lines of the existing part shape are moved, it is possible to efficiently design a new part shape obtained by performing similar deformation of the curved surface of the existing part shape.

  Further, a movement rate designation means for designating a rate of movement of the node and normal plane cross-sectional shape from a node on the movement source line to a corresponding point on the movement destination line, and corresponding movement destination of the node on the movement destination line Movement extension permission / inhibition indicating means for specifying whether to limit to a point or not, and in the similar deformation and rearrangement, in the case of the limitation, a correspondence on a destination line from a node on the source line A line connecting the corresponding point on the destination line from the node on the movement source line when the node and the normal plane cross-sectional shape are moved to a point corresponding to the ratio on the line segment connecting the points to be The node and the normal plane cross-sectional shape are moved to a point corresponding to the ratio on the extension line of minutes.

  According to this configuration, the operator can stop and extend the deformation process at a desired stage while viewing the similar deformed shape on the display screen, and can efficiently design a new three-dimensional shape.

  Also, correspondence specifying means for specifying the correspondence between the node on the movement source line and the point on the movement destination line is provided, and in the similar deformation and rearrangement, the node is designated as well as the normal plane sectional shape of the node. It is characterized by moving to a corresponding point.

  The correspondence includes an equipartition ratio correspondence corresponding to a point that internally divides the destination line with an interior ratio that is equal to the interior ratio that the node internally divides the movement source line, and the equipartition ratio When correspondence is specified, in the similar deformation and rearrangement, the node whose internal ratio on the movement source line is A and the normal plane cross-sectional shape of the node have the internal ratio on the movement destination line of A. It is characterized by moving to a point.

  The correspondence includes a destination line perpendicular correspondence corresponding to a point where the node is a point on the destination line, and a perpendicular drawn from a point on the destination line intersects the node of the source line, When movement destination line perpendicular correspondence is specified, a point that is a point on the movement destination line that is perpendicular to the point on the movement destination line can intersect the node of the movement source line in the similar deformation and rearrangement The feature is that the navel node and the normal plane cross-sectional shape of the node move.

  The correspondence includes a movement source normal correspondence corresponding to an intersection of the normal plane at the node and the movement destination line, and when the movement destination perpendicular correspondence is specified, the similar deformation and rearrangement And the normal plane sectional shape of the node moves to the intersection of the normal plane at the node and the movement destination line.

  The correspondence includes a designated plane correspondence corresponding to a point that is parallel to the one plane in which the node is designated and the surface including the node intersects the destination line, and indicates the one plane. When the correspondence to the designated plane is designated, in the similar deformation and rearrangement of the normal plane cross-sectional shape, the nodal point on the movement source line and the normal plane cross-sectional shape of the nodal point are specified. The plane is parallel to one plane and moves to a point where the plane including the node intersects the movement destination line.

  According to these configurations, it is possible to efficiently design a new part shape that effectively utilizes the normal plane cross-sectional shape of an existing part by various methods.

  Further, the correspondence designated by the correspondence designation means includes auxiliary correspondence designation means for further designating the node having no corresponding point on the movement destination line and the correspondence destination of the normal plane cross-sectional shape of the node as auxiliary correspondence designation. In the similar deformation and rearrangement, in the correspondence designated by the correspondence designating means, the node having no corresponding point on the movement destination line is determined according to the auxiliary correspondence designation together with the normal plane sectional shape of the node. It is characterized by moving to a point.

  In the auxiliary correspondence designation, the node is a point on the extension line of the movement destination line, and the movement line extension auxiliary correspondence designation corresponding to the point where the perpendicular line dropped from the point intersects the node of the movement source line In the similar deformation and rearrangement, in the correspondence designated by the correspondence designating means, the node having no corresponding point on the destination line and The normal plane cross-sectional shape of the node is moved to a point on the extension line of the movement destination line and a perpendicular line dropped from the point intersects the node of the movement source line.

  The auxiliary correspondence designation includes a closest point auxiliary correspondence designation in which the node corresponds to the nearest point on the movement destination line, and when the nearest point auxiliary correspondence designation is designated, in the similar transformation and rearrangement, the correspondence In the correspondence designated by the designation means, the node having no corresponding point on the movement destination line and the normal plane sectional shape of the node are moved to the nearest point on the movement destination line.

  According to these configurations, effective similar deformation processing can be performed regardless of the state of the movement source line defined by the operator and the movement destination line specified, and efficient design can be performed.

  Further, a lower limit curvature radius defining means for defining a lower limit value of the radius of curvature of the movement source line, and n () on the movement source line between the nodes between the nodes whose curvature on the movement source line is smaller than the lower limit curvature radius. n: an integer greater than or equal to 1) auxiliary node providing means for arranging a new auxiliary node at a position to be divided, and in the normal plane sectional shape creating means, the auxiliary plane sectional shape of the existing part at the auxiliary node is determined. It is characterized in that the similar deformation and rearrangement are performed on the auxiliary plane sectional shape.

  According to this configuration, even if the curvature radius of the movement source line in the existing part shape is small, the outline of the new part shape after the similar deformation process can be matched with the movement destination line designated by the operator. It is possible to efficiently perform a new part shape intended by the operator.

  A cross-sectional shape in which the similarly deformed and rearranged cross-sectional shape indicates a surface to be arranged at a point on the movement destination line, and the similar deformed and re-arranged cross-sectional shape is indicated on the indicated arrangement surface Are arranged, and a new part shape defined by a series of the arranged cross-sectional shapes is generated.

The arrangement plane instruction includes a movement destination normal plane arrangement designation that is a normal plane of the movement destination line,
The similar deformed and rearranged cross-sectional shape is arranged on the normal plane at a point on the movement destination line.

  The arrangement plane instruction includes a movement source normal plane designation that is a plane parallel to the normal plane of the movement source line of the movement source, and the similar deformed and rearranged cross-sectional shape at the point on the movement destination line. It is arranged on a plane parallel to the normal plane of the movement source line of the movement source.

  According to these configurations, it is possible to specify which plane the normal plane cross-sectional shape of the existing part is to be the relocation destination point, and efficient design of a new part shape that effectively uses the existing part is possible. it can.

In the present specification, the following invention is also disclosed. A design data generation method for generating new design data of a part by performing shape deformation processing on the shape of the existing part, and the computer assigns nodes at predetermined intervals on the ridge line of the shape of the existing part A node assignment step, a movement source line definition step in which the input device accepts designation of one of the ridge lines of the existing part shape as a movement source line, and the computer uses the normal part at a normal plane at the node on the movement source line A normal plane cross-sectional shape creating step for creating a cross-sectional shape of each, a movement destination line specifying step for accepting designation of a movement destination line that is the movement destination of the movement source line by the input device, and the input device being the shape of the existing part From the fixed ridge line designation step for receiving the designation of the fixed ridge line, and the normal plane cross-sectional shape in which the computer intersects the fixed ridge line, the node belonging to the movement source line is moved to the movement destination. A similar deformed cross-sectional shape creation and rearrangement process in which a similar deformation is performed to move to a corresponding point above, and a normal plane cross-sectional shape in which the computer does not intersect the fixed ridge line correspond to the destination line The computer generates a new part shape defined by a sequence of the rearranged similar deformed cross-sectional shape and normal plane cross-sectional shape. It is characterized by that.

  According to this configuration, it is possible to efficiently design a new part shape accompanied by a similar deformation of the normal plane cross-sectional shape of the existing part shape.

  A design data generation method for generating new design data for a part by performing shape deformation processing on the shape of the existing part, wherein the computer sets nodes at predetermined intervals on the ridge line of the shape of the existing part. A node providing step to be applied, an input device specifying one of the ridge lines of the existing part shape as a first movement source line, and a second movement of one of the ridge lines other than the first movement source line A movement source line definition step for accepting designation as a source line, a normal plane cross-sectional shape creation step in which the computer creates a cross-sectional shape of the existing part by a normal plane at the node on the first movement source line, and A destination to which the input device accepts designation of a first destination line that is the destination of the first source line and designation of a second destination line that is the destination of the second source line The line designation step and the computer For a normal plane cross-sectional shape intersecting with the second movement source line, a node belonging to the first movement source line is moved to a corresponding point on the first movement destination line, and the second movement source line A similar deformation cross-sectional shape creation and rearrangement process in which similar nodes are moved to corresponding points on the second movement destination line and rearranged, and the computer intersects the second movement source line Relocating the normal plane cross-sectional shape to a corresponding point on the first movement destination line, and the computer re-arranges the similar deformed cross-sectional shape and the normal plane cross-section. A new part shape defined by a series of shapes is generated.

  According to this configuration, it is possible to efficiently perform a new part shape accompanied by a similar deformation of a normal plane cross-sectional shape that moves two ridge lines of an existing part shape.

  Further, the computer includes a shape node providing step in which the computer provides shape nodes at a predetermined interval on the normal plane cross-sectional shape, and the computer is configured to move the normal plane cross-sectional shape from the source in the similar deformation. Divide the distance from the fixed ridge line to the shape node by the distance from the node belonging to the movement source line to the corresponding point on the movement destination line to the movement vector from the node belonging to the line to the corresponding point of the movement destination line. The normal plane cross-sectional shape is similarly deformed by moving according to the shape node movement vector multiplied by the ratio.

  According to this configuration, even when the existing part shape is provided with a curved surface, it is possible to efficiently design a new part shape by performing similar deformation of the curved surface.

  In addition, the computer includes a shape node providing step in which the computer provides shape nodes at a predetermined interval on the normal plane cross-sectional shape, and the computer is configured so that the shape node is the first movement source line in the similar deformation. The first movement vector from the node belonging to the first movement destination line to the corresponding point on the first movement destination line, the distance from the second movement source line to the shape node from the node belonging to the first movement source line The movement is performed according to a first shape node movement vector multiplied by a ratio divided by the distance to the corresponding point on the first movement destination line, and the computer further moves the node from the node belonging to the second movement source line to the second point. The distance from the first movement source line to the shape node is set to the second movement vector from the node belonging to the first movement source line to the second movement vector. Multiplied by the ratio divided by the distance to the corresponding point Move according to the shape nodal motion vectors, said method planar cross-sectional shape characterized by similar deformation.

  According to this configuration, when the two ridge lines of the existing part shape are moved, it is possible to efficiently design a new part shape obtained by performing similar deformation of the curved surface of the existing part shape.

  The input device includes a non-deformation region designation step for accepting designation of a non-deformation region from the shape of the existing part, and in the similar transformation, the computer corresponds to a node belonging to the movement source line on the movement destination line. The shape belonging to the non-deformation region of the normal plane cross-sectional shape is translated without being deformed, and the shape not belonging to the non-deformation region of the normal plane cross-sectional shape is similarly deformed so as to be located at a point to be It is characterized by that.

  According to this configuration, it is possible to perform similar deformation that preserves the shape of the designated non-deformation region, and to efficiently design a new three-dimensional shape imaged by the operator based on the existing part shape. Can do.

  When the input device includes a fixed shape designation step for accepting designation of a fixed shape from the shape of the existing part, and the computer defines the fixed shape in the normal plane cross-sectional shape in the similar deformation Does not move the point defining the fixed shape so that the node belonging to the movement source line is located at the corresponding point on the movement destination line, and similar deformation of the normal plane cross-sectional shape. Features.

  According to this configuration, it is possible to perform similar deformation for fixing the shape of the specified fixed region, and to efficiently design a new three-dimensional shape imaged by the operator based on the existing part shape. it can.

  A movement rate designation step in which the input device accepts designation of a rate of movement of the node and normal plane cross-sectional shape from a node on the movement source line to a corresponding point on the movement destination line; and the input device moves the movement destination of the node A movement extension permission / inhibition indicating step of accepting designation of whether to restrict to a corresponding point on the movement destination line or not, and when the restriction is performed in the similar deformation and rearrangement, When the node and normal plane cross-sectional shape are moved from the node on the movement source line to the point corresponding to the ratio on the line segment connecting the corresponding point on the movement destination line, The node and the normal plane cross-sectional shape are moved to a point corresponding to the ratio on an extension line of a line segment connecting corresponding points on the movement destination line from the node.

  According to this configuration, the operator can stop and extend the deformation process at a desired stage while viewing the similar deformed shape on the display screen, and can efficiently design a new three-dimensional shape.

  The input device includes a correspondence specifying step of accepting designation of correspondence between a node on the movement source line and a point on the movement destination line, and the computer converts the node into a method of the node in the similar deformation and rearrangement. It moves to the point according to the said specification with a planar cross-sectional shape, It is characterized by the above-mentioned.

  The correspondence includes an equal internal ratio correspondence corresponding to a point that internally divides the destination line at an internal ratio equal to an internal ratio in which the node internally divides the movement source line, and the input device includes: In the case of accepting the designation of the equipartition ratio correspondence, the computer, in the similar deformation and rearrangement, the node whose interior ratio on the movement source line is A and the normal plane sectional shape of the node are moved. It moves to the point where the internal ratio on the front line is A.

  The correspondence includes a destination line perpendicular correspondence corresponding to a point where the node is a point on the destination line, and a perpendicular drawn from a point on the destination line intersects the node of the source line, When the input device accepts the designation corresponding to the destination line perpendicular line, the calculator determines that a perpendicular line that is a point on the destination line and dropped from a point on the destination line in the similar deformation and rearrangement The node and the normal plane cross-sectional shape at the node move to a point that can intersect the node of the movement source line.

  The correspondence includes a movement source perpendicular correspondence corresponding to an intersection of the normal plane at the node and the movement destination line, and the input device receives the designation of the movement destination perpendicular line, The computer is characterized in that, in the similar deformation and rearrangement, the nodal point and the normal plane sectional shape of the nodal point move to the intersection of the normal plane at the nodal point and the movement destination line.

  The correspondence includes a designated plane correspondence corresponding to a point parallel to the one plane in which the node is designated, and the plane including the node and the movement destination line intersect, and the input device includes the one A plane designating step for accepting an indication of the plane, and when the input device accepts the designation corresponding to the designated plane, the computer performs the same transformation and rearrangement of the normal plane sectional shape on the movement source line. A node and a normal plane cross-sectional shape of the node are planes parallel to the specified plane, and the plane including the node moves to a point intersecting the movement destination line.

  Further, in the correspondence specified in the correspondence specification step, the input device further accepts designation of the node having no corresponding point on the movement destination line and the correspondence destination of the normal plane sectional shape of the node as auxiliary correspondence designation. An auxiliary correspondence designating step, wherein the computer determines, in the similar deformation and rearrangement, the node having no corresponding point on the movement destination line in the correspondence designated in the correspondence designating step; It moves to the point according to the said auxiliary | assistant corresponding | compatible designation | designated with a cross-sectional shape, It is characterized by the above-mentioned.

Further, the correspondence designated by the correspondence designation means includes an auxiliary correspondence designation step for further designating the node having no corresponding point on the movement destination line and the correspondence destination of the normal plane cross-sectional shape of the node, the similarity In deformation processing and rearrangement processing,
In the correspondence designated in the correspondence designation step, the node having no corresponding point on the movement destination line and the normal plane cross-sectional shape of the node are moved to a point corresponding to the auxiliary designation.

  According to these configurations, it is possible to efficiently design a new part shape that effectively utilizes the normal plane cross-sectional shape of an existing part by various methods.

  In the auxiliary correspondence designation, the node is a point on the extension line of the movement destination line, and the movement line extension auxiliary correspondence designation corresponding to the point where the perpendicular line dropped from the point intersects the node of the movement source line When the input device accepts the movement destination line extension auxiliary correspondence designation, the computer corresponds to the movement destination line in the correspondence designated in the correspondence designation step in the similar deformation and rearrangement. The node having no point to be moved and the normal plane cross-sectional shape of the node are moved to a point on the extension line of the movement destination line and a perpendicular line dropped from the point intersecting the node of the movement source line. Features.

  The auxiliary correspondence designation includes a closest point auxiliary correspondence designation in which the node corresponds to the nearest point on the destination line, and when the input device accepts the nearest point auxiliary correspondence designation, the computer In deformation and rearrangement, in the correspondence specified in the correspondence specifying step, the node having no corresponding point on the movement destination line and the normal plane sectional shape of the node may be moved to the nearest point on the movement destination line. Features.

  According to these configurations, effective similar deformation processing can be performed regardless of the state of the movement source line defined by the operator and the movement destination line specified, and efficient design can be performed.

  The input device has a lower limit curvature radius defining step for accepting designation of a lower limit value of the radius of curvature of the movement source line, and the computer has the node between the nodes whose curvature on the movement source line is smaller than the lower limit curvature radius. An auxiliary node providing step of arranging a new auxiliary node at a position that divides n (n: an integer of 1 or more) on the movement source line between, and the computer includes the auxiliary plane in the normal plane sectional shape creating step An auxiliary plane sectional shape of the existing part at a node is created, and the computer performs the similar deformation and rearrangement on the auxiliary plane sectional shape.

  According to this configuration, even if the curvature radius of the movement source line in the existing part shape is small, the outline of the new part shape after the similar deformation process can be matched with the movement destination line designated by the operator. It is possible to efficiently perform a new part shape intended by the operator.

  Further, the input device includes an arrangement surface instruction step for receiving an instruction of a surface on which the similar deformed and rearranged cross-sectional shape is arranged at a point on the movement destination line, and the computer includes the designated arrangement surface The similar deformed and rearranged cross-sectional shapes are arranged, and a new part shape defined by a series of the arranged cross-sectional shapes is generated.

  The arrangement plane instruction includes a movement destination normal plane arrangement designation which is a normal plane of the movement destination line, and the computer calculates the similar deformed and rearranged cross-sectional shape at a point on the movement destination line. It is arranged on the top.

  The arrangement plane instruction includes a movement source line normal plane designation that is a plane parallel to the normal line of the movement source line of the movement source, and the computer displays the similar deformed and rearranged cross-sectional shape on the movement destination line. In this point, it is arranged on a plane parallel to the normal plane of the movement source line of the movement source.

  According to these configurations, it is possible to specify which plane the normal plane cross-sectional shape of the existing part is to be the relocation destination point, and efficient design of a new part shape that effectively uses the existing part is possible. it can.

  As described above, according to the present invention, it is possible to efficiently design a new part shape accompanied by a similar deformation of the normal plane sectional shape of the existing part shape.

It is a block block diagram which shows the function of the design data generation apparatus of Embodiment 1 of this invention. It is a figure which shows the design data generation flow of Embodiment 1 of this invention. It is a figure explaining the deformation | transformation process of the concrete existing shape in the design data generation apparatus of Embodiment 1 of this invention. It is a figure explaining the movement of the shape node of a normal plane cross-sectional shape in the design data generation apparatus of Embodiment 1 of this invention. It is a figure which shows the functional block block diagram of the design data generation apparatus provided with the correspondence designation | designated means. It is a figure for demonstrating equipartition ratio correspondence among the correspondence designation | designated in FIG. It is a figure for demonstrating a movement destination line perpendicular | vertical correspondence among the correspondence designation | designated in FIG. It is a figure for demonstrating a movement origin line perpendicular | vertical correspondence among the correspondence designation | designated in FIG. It is a figure for demonstrating designation | designated surface parallel correspondence among the correspondence designation | designated in FIG. It is a figure which shows the functional block structure of the design data generation apparatus provided with the auxiliary | assistant correspondence designation | designated means. It is a figure for demonstrating a finger movement destination line extension correspondence among the auxiliary | assistant correspondence designation | designated in FIG. It is a figure for demonstrating nearest point correspondence among the auxiliary | assistant correspondence designation | designated in FIG. It is a figure which shows the functional block structure of the design data generation apparatus provided with the movement ratio designation | designated means. It is a figure which shows the functional block structure of the design data production | generation apparatus provided with the movement extension availability indicator. It is a block block diagram which shows the function of the design data generation apparatus of Embodiment 2 of this invention provided with the non-deformation area | region designation | designated means. It is a figure which shows the design data generation flow of Embodiment 2 of this invention including the process of designating a non-deformation area | region. It is a figure for demonstrating the similar deformation | transformation of the existing component shape to which the non-deformation area | region was designated. It is a figure for demonstrating the similar deformation | transformation of the normal plane cross-sectional shape which cross | intersects the non-deformation area | region in FIG. It is a block block diagram which shows the function of the design data generation apparatus of Embodiment 3 of this invention provided with the fixed shape designation | designated means. It is a figure which shows the design data generation flow of Embodiment 3 of this invention including the process of designating a fixed shape. It is a figure for demonstrating the similar deformation | transformation of the existing component shape to which the fixed shape was designated. It is a figure for demonstrating the similar deformation | transformation of the normal plane cross-sectional shape which cross | intersects the fixed shape in FIG. 21, and does not cross | intersect a fixed ridgeline. It is a figure for demonstrating the similar deformation | transformation of the normal plane cross-sectional shape which cross | intersects the fixed shape in FIG. 21, and cross | intersects a fixed ridgeline. It is a block block diagram which shows the function of the design data generation apparatus of Embodiment 4 of this invention provided with the lower limit curvature radius designation | designated means. It is a figure which shows the design data generation flow of Embodiment 4 of this invention including the process of designating a minimum curvature radius. It is a figure for demonstrating the similar deformation | transformation of the existing component shape which has the movement origin line below a lower limit curvature radius. It is a block block diagram which shows the function of the design data generation apparatus of Embodiment 5 of this invention provided with the normal plane cross-section orientation designation | designated means. It is a figure which shows the design data generation flow of Embodiment 5 of this invention including the process of designating the orientation of a normal plane cross-sectional shape. It is a figure for demonstrating the orientation of a normal plane cross-sectional shape by a specific existing part shape. It is a block block diagram which shows the function of the design data production | generation apparatus of Embodiment 6 of this invention provided with the movement original line division | segmentation means. It is a figure which shows the design data generation flow of Embodiment 6 of this invention including the process of dividing | segmenting a movement original line. It is a figure for demonstrating the divided similar deformation | transformation process of the design data generation apparatus of Embodiment 6 of this invention. It is a block block diagram which shows the function of the design data generation apparatus of Embodiment 7 of this invention provided with the designation | designated means of 2 sets of movement origin lines and movement destination lines. It is a block block diagram which shows the function of the design data generation apparatus of Embodiment 7 of this invention including the process of designating 2 sets of movement origin lines and movement destination lines. It is a figure for demonstrating the similar deformation | transformation of the existing component shape to which 2 sets of movement origin lines and movement destination lines were designated. It is a figure which shows the conventional deformation | transformation process using a CAD apparatus.

  Hereinafter, embodiments of the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

Embodiment 1. FIG.
FIG. 1 is a functional block configuration diagram of a design data generation apparatus according to Embodiment 1 of the present invention. The design data generation apparatus 1 is a design data generation apparatus that generates new design data of an article by performing shape deformation processing on the design data of an already created article, and includes a computer 2 and an image display apparatus 4. And input devices such as a keyboard and a mouse. A node providing means for reading design data of an existing part from a design data storage device 6 composed of a hard disk or the like, and for an operator to add a node to the existing part shape while visually confirming with an image display device 4 such as a CRT. 8. Moving source line defining means 10 for defining a moving source line for an edge of an existing part shape, moving destination line specifying means 12 for specifying a moving destination line as a moving destination of the moving source line, and a method for each node on the moving source line The shape of the new part is designed by operating the normal plane sectional shape creating means 14 for creating the sectional shape of the existing part by the plane.

  What is characteristic in the present embodiment is that the nodes belonging to the movement source line are displayed on the movement destination line with respect to the fixed ridge line designation means 16 for designating the fixed ridge line and the normal plane cross-sectional shape intersecting the fixed ridge line from the existing part shape. The similar deformed cross-sectional shape creation and rearrangement means 18 to be rearranged and moved to the corresponding point of the normal plane and the normal plane cross-sectional shape that does not intersect the movement source line to the corresponding point on the movement destination line are rearranged. And a sectional shape rearrangement means 20 to be arranged. With the above configuration, it is possible to efficiently design a new part shape with the deformation of the cross-sectional shape from the existing part shape. It is also desirable that the design data generation apparatus 1 includes a communication unit with a printing apparatus or a network.

  FIG. 2 is a diagram showing a data generation flow in the design data generation apparatus of the present invention.

  First, the design data of an existing part stored in the design data storage device 6 is read out, and nodes are given at predetermined intervals on the shape of the existing part by the node giving means 8 (S10), and the movement source line defining means 10, one of the ridge lines of the existing part shape is defined as a movement source line (S12). Next, the movement destination line designation means 12 designates and designates the movement destination line that is the movement destination of the movement source line (S14), and the normal plane cross-sectional shape creation means 14 designates an existing part based on the normal plane of each node on the movement source line. Are respectively created (S16).

  Next, the fixed ridge line designating unit 16 that is a feature of the present embodiment designates a fixed ridge line from the existing part shape (S16). Next, in the similar deformed cross-sectional shape creation and rearrangement means 18, it is determined whether each normal plane cross-sectional shape intersects the movement source line (S20), and the normal plane cross-sectional shape intersecting the movement source line is determined. In this case, the node belonging to the movement source line is rearranged by performing a similar deformation that moves the corresponding node to the corresponding point on the movement destination line (S22). In step S26, rearrangement is performed at a corresponding point on the movement destination line (S24), and a new part shape defined by a series of the rearranged similar deformed sectional shape and normal plane sectional shape is generated (S26). ). Note that the order of the definition process and the designation process before the similar deformation and rearrangement processing may not be described here.

  In addition, when there is an area that does not intersect the normal plane of the movement source line in the existing part shape, the defined movement source line is extended in the normal plane cross-sectional shape creation step S16, and all the areas of the existing shape are Preferably, a normal plane cross-sectional shape is created.

  Here, a specific deformation process in the design data generation apparatus according to the first embodiment of the present invention will be described using an example of a figure. FIG. 3A shows an existing part shape 100. This shape may be obtained by reading data stored in advance in the design data storage device 6 or may be received from a network or the like by communication means provided in the computer 2. First, nodes are provided on the existing part shape 100 by the node provision means 8.

  Next, one of the ridge lines of the component shape 100 is defined as a movement source line 110 by the movement source line defining means 10 constituted by an input device such as a keyboard and a mouse. Here, among the assigned nodes, only the nodes on the movement source line are indicated as a0, a1, a2, a3, a4.

  Furthermore, the movement destination line 112 that is the movement destination of the movement source line 110 is designated by the movement destination line designation means 12 constituted by an input device such as a keyboard and a mouse.

  Next, the normal plane cross-sectional shape creating means 14 creates a cross-sectional shape of the existing part shape 100 based on the normal plane at the nodes a0, a1, a2, a3, and a4 on the movement source line 110, respectively. The created normal plane cross-sectional shape is indicated as A0, A1, A2, A3, A4 corresponding to each node.

  Next, the fixed ridge line designating unit 16 constituted by an input device such as a keyboard and a mouse can also be applied to a new shape that has undergone a deformation process on a ridge line other than the movement source line 110 among the ridge lines of the shape 100. The ridge line to be fixed is designated as the fixed ridge line 114.

  Based on the above definition and designation, the similar deformation cross-sectional shape creation and rearrangement means 18 performs similar deformation processing and rearrangement processing on the normal plane cross-sectional shapes A0, A1, A2, A3, A4. FIG. 3B shows a new part shape 101 that has been subjected to similar deformation processing and rearrangement processing.

  For the normal plane cross-sectional shape A0 (A1) intersecting with the fixed ridge line 114, the node a0 (a1) belonging to the movement source line is changed to the corresponding point b0 on the movement destination line while the point belonging to the fixed ridge line 114 is fixed. Similar deformations are made by moving to b1).

  On the other hand, the normal plane cross-sectional shape A2 (A3, A4) that does not intersect with the fixed ridge line 114 is to the point b2 (b3, b4) corresponding to the movement destination line 112 of the node a2 (a3, a4) on the movement source line 110. Each move is moved and rearranged.

  The shape defined by the series of the shapes B0, B1, B2, B3, and B4 subjected to the above similar deformation processing and rearrangement processing becomes the shape of a new part.

  The shape 100 used in the above specific example is composed of only a straight line, but a similar deformation when the existing part shape includes a curved surface will be described below.

  When the existing part shape includes a curved surface, that is, when the normal plane cross-sectional shape has a curve, the normal plane cross-sectional shape creating means 14 gives shape nodes at predetermined intervals on each generated normal plane cross-sectional shape. . Next, in the similar deformed cross-sectional shape creation and rearrangement means 18, each shape node is a movement vector from the node belonging to the movement source line to the corresponding point of the movement destination line, and the distance from the fixed ridge line to the shape node. A similar deformation is realized by moving according to the shape node movement vector multiplied by the ratio obtained by dividing the distance from the node belonging to the movement source line to the corresponding point on the movement destination line.

  This similar deformation will be specifically described using an example of a normal plane cross-sectional shape as shown in FIG. In the normal plane cross-sectional shape 120, 122 nodes belonging to the movement source line, 124 corresponding points on the movement destination line, 126 points belonging to the fixed ridge line, points 126 belonging to the fixed ridge line to nodes 122 belonging to the movement source line Let the distance be L0.

  First, the normal plane cross-sectional shape creating means 14 assigns the shape nodes c1, c2, c3, c4, and c5 to the normal plane cross-sectional shape 120 at predetermined intervals.

  Here, for simplicity, only c3 is focused. The distance from the point 126 belonging to the fixed ridge line to c3 is L3. In the similar deformation processing step S22, c3 is a shape node movement vector vc3 (= movement vector v ×) obtained by multiplying the movement vector v from the node 122 belonging to the movement source line to the corresponding point 124 on the movement destination line by L3 / L0. The point d3 is moved according to (L3 / L0).

  By applying the same movement to each shape node, a similar deformation of the part shape having a curved surface can be performed.

  In the first embodiment, the following four types of correspondence can be considered as to which point on the movement destination line the normal plane cross-sectional shape at each node on the movement source line corresponds to similar deformation and rearrangement.

  1. Corresponding to the equal internal ratio corresponding to the point where the internal ratio of the node internally dividing the line segment of the movement source line is the same internal division ratio on the line segment of the movement destination line.

  2. Corresponding to the perpendicular to the destination line, the vertical line where the node drops from the point on the destination line intersects the node of the source line.

  3. Corresponding to the movement source line perpendicular corresponding to the intersection of the vertical line where the node dropped from the node on the movement source line and the movement destination line.

  4). Designated surface parallel correspondence where the node is parallel to the designated surface specified by the operator and corresponds to the intersection of the surface containing the node and the destination line.

  The design data generation apparatus 1 according to the first embodiment preferably includes correspondence designation means 15 that accepts designation from the operator as to which of these four types is to be handled in the similar deformation processing and rearrangement processing. FIG. 5 shows a functional block configuration diagram of the design data generation apparatus provided with the correspondence specifying means 15. The correspondence specifying means 15 may be able to select from all of the above four types of correspondences, or may be selected from only some of the correspondences suitable for the design method.

  The equipartition ratio correspondence of 1 will be described with reference to the drawings. FIG. 6 shows a movement source line and a movement destination line. The node p1 on the movement source line is a point that internally divides the line segment of the movement source line into 1: 4. The node p1 or the normal plane cross-sectional shape of the node p1 moves to a point q1 that internally divides the segment of the movement destination line into 1: 4, and is similarly deformed or rearranged.

  The correspondence of the second moving line perpendicular will be described with reference to the drawings. FIG. 7 shows a movement source line and a movement destination line. A node on the movement source line corresponds to a point where a perpendicular drawn from a point on the movement destination line intersects with a node of the movement source line. Therefore, the nodes p1, p2, p3, and p4 on the movement source line correspond to q1, q2, q3, and q4 on the movement destination line, respectively.

  3 corresponding to the movement source line perpendicular line will be described with reference to the drawings. FIG. 8 shows a movement source line and a movement destination line. The node p1 on the movement source line corresponds to the point q1 at which the perpendicular drawn from the node intersects the movement destination line.

  4 will be described with reference to the drawing. FIG. 9 shows the movement source line, the movement destination line, and the designated surface S designated by the operator. A node p1 on the movement source line is a plane parallel to the designated plane S, and corresponds to a point q1 at which the plane S ′ including p1 and the movement destination line intersect.

  In some cases, the correspondence methods 1 to 4 described above cannot cope with each other. In this case, the normal plane cross-sectional shape at each node on the movement source line, which cannot be further dealt with after the above-described correspondence methods 1 to 4, is similar to any other point on the movement destination line by similar deformation and There are the following two auxiliary methods for determining whether to rearrange.

  A. Supports extension of the destination line to create a corresponding point by extending the destination line.

  B. Nearest point correspondence corresponding to the closest point on the destination line.

  The design data generation device 1 according to the first embodiment includes an auxiliary correspondence designating unit 17 that receives designation from the operator as to which of the two types of auxiliary correspondence is to be used in the similar deformation process and the rearrangement process. preferable. FIG. 10 shows a functional block configuration diagram of the design data generation apparatus 1 including the auxiliary correspondence designating unit 17. The auxiliary correspondence designating means 17 may be able to select from the above two types of correspondence, or only one of the auxiliary correspondences may be selected.

  The movement destination line extension correspondence of A will be described with reference to the drawings. FIG. 11 shows the movement source line and the movement destination line. It is assumed that the correspondence of the principle is the correspondence of the two moving destination perpendicular lines. Therefore, the nodes p1, p2, p3, and p4 on the movement source line correspond to q1, q2, q3, and q4 on the movement destination line, respectively. However, the node p5 does not have a corresponding point in the correspondence of the principle because there is no point on the movement destination line that intersects the perpendicular drawn from the movement destination line. In this case, as shown by a dotted line in FIG. 11, the movement destination line is extended to correspond to the point q5 that intersects the perpendicular drawn from there.

  The closest point correspondence of B will be described with reference to the drawings. FIG. 12 shows the node p1 on the movement source line and the movement destination line. It is assumed that the correspondence of the principle is the correspondence of the two moving destination perpendicular lines. However, the node p1 does not have a corresponding point in the correspondence of the principle because there is no point on the movement destination line that intersects with the perpendicular drawn from the movement destination line. In this case, as shown in FIG. 12, it is made to correspond to the closest point q1 on the movement destination line.

  By designating the above supplementary correspondence, all of the cross-sectional shapes of the existing parts can be effectively used for designing a new shape.

  Furthermore, in the design data generation apparatus 1 of the first embodiment, the similar deformation (S22) due to the movement of the node belonging to the movement source line toward the movement destination line specified in advance by the operator (S22) and the rearrangement of the normal plane sectional shape ( In S24), it is preferable to include a movement rate designation means 11 for inputting the rate of movement of the similar deformation process and the rearrangement process for interrupting or terminating the middle of the deformation and rearrangement path.

  FIG. 13 shows a functional block configuration diagram of the design data generation apparatus 1 provided with the movement ratio designation means 11. The movement rate designation means 11 is preferably composed of a pointing device such as a keyboard and a mouse.

  According to the design data generation device 1 provided with the movement ratio specifying means 11, the operator confirms the process of the deformation process on the image display device 4 and moves the deformation and rearrangement to a predetermined movement destination line. If the shape in the middle is a preferred shape according to the operator's intention, the deformation can be interrupted or terminated there. It is also preferable to change the deformation speed on the image display device 4 in accordance with the movement speed of the pointing device.

  Furthermore, in the design data generation apparatus 1 of the first embodiment, in the designation of the movement ratio, in the similar deformation (S22) due to the movement of the node belonging to the movement source line and the rearrangement of the normal plane cross-sectional shape (S24), the node It is also preferable to include movement extension permission / inhibition instructing means 13 for instructing in advance whether or not to allow movement to a point on a line obtained by extending a straight line connecting points on the movement destination line.

  FIG. 14 shows a functional block configuration diagram of the design data generation apparatus 1 provided with the movement extension permission / inhibition instruction unit 13.

  When the movement extension permission / indication means 13 accepts the movement extension permission, the node on the movement source line or the normal plane cross-sectional shape corresponds to the movement corresponding to the node according to the designation of the ratio input to the movement ratio designation means 11. It is possible to move to a point on the extended line that connects the points on the front line.

  According to the design data generation device 1 provided with the movement extension permission / inhibition instruction unit 13, the operator extends the movement beyond the previously specified movement destination line while checking the process of the deformation process on the image display device 4. When the shape when moved to a point is a preferred shape according to the operator's intention, it can be deformed to move to that point, and an efficient design can be performed.

Embodiment 2. FIG.
In the second embodiment, in addition to the configuration of the first embodiment, a non-deformable area designating unit is provided.

  FIG. 15 is a functional block configuration diagram of the design data generation apparatus according to the second embodiment of the present invention. The design data generation apparatus according to the second embodiment is provided with a non-deformation area designating unit 22 for designating a non-deformation area from an existing part shape.

  FIG. 16 is a diagram showing a data generation flow in the design data generation apparatus of the second embodiment. Step S15 for designating a non-deformation region is added to the flow of the first embodiment. The process order of S15 may not be described here as long as it is before the similar deformation process S22 and the rearrangement process S24.

  Here, a specific deformation process in the design data generation apparatus according to the second embodiment of the present invention will be described using an example of a figure. FIG. 17A shows an existing part shape 102. First, a node is provided on the shape by the node providing means 8 (S10). Next, one of the ridge lines is defined as a movement source line 110 by the movement source line defining means 10 (S12). Here, of the given nodes, only the nodes on the movement source line are indicated as a0, a1, a2, a3, a4. Furthermore, the movement destination line designation means 12 designates the movement destination line 112 that is the movement destination of the movement source line 110 (S14). Next, the non-deformation area designating unit 22 designates a non-deformation area from the existing part shape (S15). Here, the two surfaces indicated by hatching in FIG. The normal plane cross-sectional shape creating means 14 creates the cross-sectional shape of the existing part by the normal plane of each node on the movement source line (S16). The created normal plane cross-sectional shape is indicated by A0, A1, A2, A3, A4 corresponding to each node.

  Next, the fixed ridge line designation means 16 designates the ridge line other than the movement source line among the ridge lines of the shape as the fixed ridge line 114 to be fixed in the newly generated shape (S18).

  With the above settings, in each normal plane cross-sectional shape, the shape belonging to the non-deformation region, that is, the L-shaped portions in the normal plane cross-sectional shapes A0, A1, A2, A3, and A4 are each non-deformable shape. As shown in FIG. 17B, the L-shape which is an undeformed shape is not subjected to the deformation process in the similar deformation process (S22), and other shapes are deformed according to the designated deformation instruction.

  That is, in the similar deformation (S22) due to the movement of the nodes belonging to the movement source line and the rearrangement of the normal plane cross section shape (S24), the normal plane cross sectional shape A2 (A3, A4) that does not intersect the fixed ridge line 114 is the movement original line. Each of the nodes on 110 moves in parallel with the movement to the corresponding point b2 (b3, b4) on the movement destination line 112. Therefore, the non-deformed region having the shape defined by the normal plane cross-sectional shape A2 (A3, A4) is preserved.

  On the other hand, the deformation of the normal plane cross-sectional shapes A0 and A1 intersecting with the fixed ridge line 114 will be described with reference to the drawings. FIG. 18A shows a normal plane cross-sectional shape A0 before deformation, a point f belonging to a fixed ridge line, a node g on the movement source line, a point to which the node g is moved, h, and an L-shape belonging to the non-deformation region by a bold line. Show. FIG. 18B shows the shape B0 after the deformation process. As the node g moves to the point h, the normal plane cross-sectional shape A0 is deformed in a similar manner, but the L-shaped shape indicated by the bold line is not subjected to deformation processing and is translated, and the other shapes are deformed as specified. Is given. The normal plane sectional shape A1 is also subjected to the same deformation process. As described above, the shape of the non-deformed region is preserved even in the normal plane cross-sectional shape that intersects the fixed ridge line 114.

  According to the above deformation processing, as shown in FIG. 17B, the shape of the designated non-deformation region is subjected to the stored similar deformation, and a new part shape 103 can be generated.

  According to the configuration of the second embodiment, it is possible to perform similar deformation that preserves the shape of the designated non-deformation region, and efficiently design a new three-dimensional shape imaged by the operator based on the existing part shape. can do.

Embodiment 3. FIG.
In the third embodiment, in addition to the configuration of the first embodiment, a fixed shape designating unit is provided.

  FIG. 19 is a functional block configuration diagram of the design data generation apparatus according to the third embodiment of the present invention. The design data generation apparatus according to the third embodiment includes a fixed shape designating unit 24 that designates a fixed shape from an existing part shape. The difference from the non-deformation area designating unit 22 in the second embodiment is that the non-deformation area designating unit 22 designates an arbitrary area of the existing part shape, and the shape of the area is not subjected to deformation but moves in parallel. However, in the fixed shape designation means 24 in the third embodiment, an arbitrary shape of an existing part shape, for example, a fixing hole is designated, and the shape is fixed and does not move.

  FIG. 20 is a diagram illustrating a data generation flow in the design data generation apparatus according to the third embodiment. Step S28 for designating a fixed shape is added to the flow of the first embodiment. The process order of S15 may not be described here as long as it is before the similar deformation process S22 and the rearrangement process S24.

  Here, a specific deformation process in the design data generation apparatus according to the third embodiment of the present invention will be described using an example of a figure. FIG. 21A shows an existing part shape 104. Nodes are provided on the shape by the node providing means 8 (S10). Of the assigned nodes, only the nodes on the movement source line are indicated as a0, a1, a2, a3, a4. Next, a movement source line 110 is defined by one of the ridge lines by the movement source line defining means 10 (S12). Further, the movement destination line designation means 12 designates the movement destination line 112, which is the movement destination of the movement source line 110, on the image display device 4 (S14). Next, a fixed shape is specified from the existing part shape by the fixed shape specifying means 24 (S28). Here, a square hole is defined as a fixed shape 140. In the normal plane cross-sectional shape creating means 14, the cross-sectional shapes of the existing parts by the normal plane of each node on the generated movement source line are respectively indicated as A0, A1, A2, A3, and A4.

  With the above settings, a similar deformation process (S22) and a normal plane cross-sectional shape rearrangement process (S24) are performed.

  The normal plane cross-sectional shapes A0 and A4 that do not intersect with the fixed shape 140 are subjected to the similar deformation processing (S22) and rearrangement processing (S24) in the first embodiment.

  On the other hand, among the normal plane cross-sectional shapes A1, A2, and A3 that intersect with the fixed shape 140, among the normal plane cross-sectional shapes A2 and A3 that do not cross the fixed ridge line, A2 is shown as a representative in FIG. The points indicated by black circles are points k1 and k2 that define the fixed shape on the normal plane cross section, and the positions of these points are fixed in the similar deformation and rearrangement processing. Elements having a normal cross-sectional shape other than the fixed point move as shown in FIG. 22B and rearrange as the element a2 on the movement source line moves from the node a2 to the corresponding point b2.

  Therefore, in this case, the positions of the points k1 and k2 that intersect the fixed shape change with respect to the cross-sectional shape, but the absolute position is fixed.

  Further, among the normal plane cross-sectional shapes A1, A2, and A3 that intersect with the fixed shape 140, a normal plane cross-sectional shape A1 that intersects with the fixed ridge line is shown in FIG. In this case, in the similar deformation process, as shown in FIG. 23 (b), the point f1 belonging to the fixed ridge line and the points k3 and k4 belonging to the fixed shape are fixed, and other normal plane cross-sectional shapes are on the movement source line. Deformation is accompanied by movement from the node a1 to the corresponding point b1 from the destination line.

  As a result of the above deformation process, the new part shape 105 is fixed as shown in FIG. 21B even after the predetermined similar deformation process.

  According to the configuration of the third embodiment, when a new three-dimensional shape is generated by deformation, it is possible to fix the shape of the existing part shape to be fixed, and it is possible to perform an efficient design utilizing the existing part shape. .

Embodiment 4 FIG.
In the fourth embodiment, in addition to the configuration of the first embodiment, lower limit curvature radius designating means for designating the lower limit curvature radius of the movement source line is provided.

  FIG. 24 is a functional block configuration diagram of the design data generation apparatus according to the fourth embodiment of the present invention. The design data generation apparatus of the fourth embodiment is provided with lower limit curvature radius designating means 26 for designating the lower limit curvature radius of the movement source line.

  When there is a curvature smaller than the designated curvature radius between the nodes on the movement source line by the lower limit curvature radius designation means 26, the normal plane cross-section shape creation means 14 displays n (n: 1 or more) on the movement source line between the nodes. Integer) A new auxiliary node is added at the position to be divided.

  FIG. 25 is a diagram showing a data generation flow in the design data generation apparatus of the fourth embodiment. Step S30 for designating the lower limit curvature radius is added to the flow of the first embodiment. As long as the order of steps of S30 is before the similar deformation processing step (S22) and the rearrangement processing step (S24), it may not be described here.

  A specific deformation process in the design data generation apparatus according to the fourth embodiment of the present invention will be described using an example of a figure. FIG. 26A shows a movement source line 150 of an existing part shape and a designated movement destination line 152. Nodes (a1, a2, a3, a4) indicated by black circles are provided on the movement destination line 150 by the node provision means 8. Here, it is assumed that the correspondence of the node on the movement source line to the point on the movement destination line is the movement line perpendicular corresponding to the point where the perpendicular drawn from the point on the movement destination line intersects the node of the movement source line. , A1, a2, a3, and a4 are rearranged at b1, b2, b3, and b4, respectively. However, a new part shape defined by a series of normal plane cross-sectional shapes after similar deformation and rearrangement becomes an outline different from the movement destination line 152 designated by the operator as indicated by a dotted line. This is because the radius of curvature between the nodes a2 and a3 on the movement source line 150 is small, and there is a curved portion on the movement destination line 152 where there is no node intersecting with the perpendicular drawn from the movement destination line 152. .

  Therefore, when the radius of curvature between the nodes a2 and a3 of the movement source line is smaller than the lower limit curvature radius designated by the lower limit curvature radius designation means 26 as shown in FIG. As shown in FIG. 26 (b), auxiliary nodes a4 and a5 are arranged at positions equally dividing the nodes a2 and a3 into three as shown in FIG. 26B, and a normal plane cross-sectional shape of an existing part at each point of the auxiliary nodes is created. .

  The normal plane cross-sectional shape of the auxiliary nodes a4 and a5 corresponds to the points b4 and b5 on the movement destination line and the perpendicular drawn from the point intersects the auxiliary node.

  In the fourth embodiment, the number of auxiliary nodes is divided into three parts between the nodes. However, the number of auxiliary nodes is not limited to three, and auxiliary nodes may be provided at points that are divided into n (n is an integer of 1 or more). It is also preferable that n can be input in advance by the lower limit curvature radius specifying means 26.

  According to the configuration of the fourth embodiment, it is possible to efficiently design a new shape that becomes the contour line intended by the operator by utilizing the existing part shape.

Embodiment 5. FIG.
In the fifth embodiment, in addition to the configuration of the first embodiment, normal plane cross-sectional shape orientation designating means 28 for designating the orientation at the point on the movement destination line after rearrangement of the normal plane cross-sectional shape and similar deformation is provided. .

  FIG. 27 is a functional block configuration diagram of the design data generation apparatus according to the fifth embodiment of the present invention. The design data generation apparatus according to the fifth embodiment includes normal plane cross-sectional shape orientation designation means 28 for designating the orientation of points on the movement destination line after rearrangement of the normal plane cross-sectional shape and similar deformation. The normal plane cross-sectional shape orientation designating means 28 sets the direction at the point on the movement destination line after the rearrangement and the similar deformation of the normal plane cross-sectional shape to the shape on the normal plane at the point of the movement destination line or a corresponding movement. The operator accepts designation from the operator as to whether or not the shape is in a plane parallel to the normal plane at the nodes on the original line.

  FIG. 28 is a diagram showing a data generation flow in the design data generation apparatus of the fifth embodiment. In the flow of the first embodiment, the orientation at the point on the movement destination line after the rearrangement and similar deformation of the normal plane cross-sectional shape is the shape on the normal plane at the point of the movement destination line, or on the corresponding movement source line A step S32 of accepting designation from the operator as to whether or not the shape is to be in a plane parallel to the normal plane at the node is added. As long as the order of the process of S32 is before the similar deformation process (S22) and the rearrangement process (S24), it does not have to be described here.

  A specific deformation process in the design data generation apparatus according to the fifth embodiment of the present invention will be described using an example of a figure. FIG. 29 shows a movement source line, a node a0, a movement destination line, and a point b0 corresponding to the node a0 on the movement destination line. A shape point representing the normal plane cross-sectional shape A0 at the node a0 on the movement source line is represented by x and represented by a white circle.

  Here, the correspondence of the node on the movement source line to the point on the movement destination line corresponds to the movement line perpendicular corresponding to the point where the perpendicular drawn from the point on the movement destination line intersects the node of the movement source line. .

  Through the similar deformation process (S22) and the rearrangement process (S24), the normal plane cross-sectional shape A1 is rearranged at the point b0 on the movement destination line. As shown in FIG. 29, the normal plane cross-sectional shape B0 rearranged at the point b0 on the movement destination line is the shape B0 on the normal plane at the point b0 of the movement destination line, or the node a0 on the corresponding movement source line. The shape B0 ′ in a plane parallel to the normal plane can be used, or two orientations can be taken.

  In the normal plane sectional shape designation means 28, the shape B0 on the normal plane at the point b0 of the movement destination line or the shape B0 ′ in a plane parallel to the normal plane at the node a0 on the corresponding movement source line In the similar deformation processing step (S22) and the rearrangement processing step (S24), a new part shape defined by the series of shapes is generated. (S26).

  For example, when the normal plane cross-sectional shape has a specific shape that maintains a predetermined dimension from the outer edge shape of the part, a new part is stored with the dimension preserved. A shape can be generated. In the present embodiment, the orientation of the cross-sectional shape after the rearrangement of the normal plane cross-sectional shape corresponding to the movement-destination normal is described, but it may be corresponding to the movement-source normal or parallel to the designated plane.

  With the configuration of the fifth embodiment, it is possible to specify which plane the shape of the normal part cross-sectional shape of the existing part is made after the similar deformation operation, and to perform an efficient design utilizing the existing part shape. it can.

Embodiment 6. FIG.
In addition to the configuration of the first embodiment, the sixth embodiment includes a movement source line dividing unit 30 that divides a movement source line in order to perform similar deformation processing separately.

  FIG. 30 is a functional block configuration diagram of the design data generation apparatus according to the sixth embodiment of the present invention. The design data generation apparatus of the sixth embodiment is provided with a movement source line dividing means 30 that is a designation for dividing and performing the similar deformation processing and rearrangement processing. The movement source line dividing means 30 receives a designation for dividing a movement source line designated in advance from the operator.

  FIG. 31 is a diagram showing a data generation flow in the design data generation apparatus of the sixth embodiment. In order to perform similar deformation processing separately in the flow of the first embodiment, a step S34 for accepting designation from the operator to divide the movement source line into L1, L2,... Ln is added. Similar deformation and rearrangement are performed for each normal plane shape belonging to (S38 to S48).

  A specific deformation process in the design data generation apparatus according to the sixth embodiment of the present invention will be described using an example of a figure. FIGS. 32A and 32B are diagrams sequentially showing the process of similar deformation of the shape in the sixth embodiment.

  FIG. 32A shows the existing shape 106, the movement source line, and the movement destination line. The movement source line is divided into four from g1 to g4 in step S34. The shape defined by the normal plane cross section belonging to the divided movement source line g4 is an area designated as a fixed shape. A plane defined by twelve control points of the shape belonging to the divided movement source line g2 is indicated by a line.

  The first deformation and rearrangement process is performed on the normal plane cross section belonging to g1 of the split movement source line as shown in FIG. 32 (b) (S38, S40). At this time, the node of the shape belonging to the adjacent g2 moves so as to maintain the continuity of the outline along with the deformation process of the normal plane sectional shape belonging to g1, but the control point is not moved. Thus, the first deformation process is completed.

  Next, as shown in FIG. 32 (c), deformation and rearrangement processing of the normal plane cross-sectional shape belonging to the divided movement source line g2 is performed (S42, S44). Similarly to the first deformation and rearrangement processing (S38, S40), the nodes of the shape belonging to the adjacent g3 are maintained with the continuity of the outline along with the deformation processing of the normal plane sectional shape belonging to g2. Move, but do not move control points. Thus, the second deformation process is completed.

  Next, as shown in FIG. 32 (d), the normal plane cross-sectional shape belonging to the divided movement source line g3 is deformed and rearranged (S46, S48). Since the normal plane cross-sectional shape belonging to the divided movement source line g4 is designated as a fixed shape, this step is the last deformation and rearrangement process. Therefore, the same processing as the deformation and rearrangement processing in the first embodiment is performed. Thus, the entire deformation and rearrangement process is completed.

  In the description of the sixth embodiment, the method of dividing the deformation into four regions has been described. However, if the number of divisions is two or more, the same processing can be performed.

  According to the configuration of the sixth embodiment, even when the deformation process is performed by dividing a region, since the control points that define the curved surface are fixed during the deformation, it is possible to connect smoothly without causing discontinuity at the boundary. it can. Therefore, even when a complicated part shape having a large amount of data is divided into regions and subjected to deformation processing, a new shape can be efficiently generated in accordance with the operator's intention.

Embodiment 7. FIG.
Embodiment 7 is similar to Embodiment 1 in that a similar deformation process is performed by specifying a combination of a pair of movement source lines and movement destination lines and a fixed ridge line, but instead of the fixed ridge line, a second movement source line The destination line is further specified. In other words, the seventh embodiment has a configuration in which similar deformation can be performed in which two ridge lines of an existing part shape are moved to designated lines, respectively.

  FIG. 33 is a functional block configuration diagram of the design data generation apparatus 1 according to the seventh embodiment. The design data generation apparatus 1 according to the seventh embodiment includes a first movement source line definition unit 32 that defines a first movement source line, a first movement destination line designation unit 34 that designates a first movement destination line, and a second movement source. A second movement source line defining means 36 for defining a line and a second movement destination line designating means 38 for designating a second movement destination line are provided.

  FIG. 34 is a diagram showing a data generation flow in the design data generation apparatus of the sixth embodiment. Instead of the fixed ridge line designation means of the flow of the first embodiment, step S52 for defining the second movement source line and step S56 for designating the second movement destination line are performed.

  The normal plane sectional shape processing in the similar deformation processing step (S22) and the rearrangement processing step (S24) is divided into the following two.

  The normal plane cross-sectional shape that does not intersect the second movement source line is not deformed, and is rearranged as the node on the first movement source line moves to the corresponding point on the first movement destination line.

  The similar deformation process (S22) of the normal plane cross-sectional shape that intersects the second movement source line will be described using an example of a figure. FIG. 35A shows the normal plane cross-sectional shape, the node (c1) on the first movement source line and the corresponding point (d1) on the first movement destination line, the node (e1) on the second movement source line, and the corresponding point. A point (f1) on the second movement destination line is shown.

  First, as shown in FIG. 35B, a similar deformation process is performed in which the node (c1) on the first movement source line is moved to the corresponding point (d1) on the first movement destination line. This is the same as the similar deformation in which the node (e1) on the second movement source line is a point on the fixed ridge line in the first embodiment.

  Next, as shown in FIG. 35C, a similar deformation process is performed in which the node (e1) on the second movement source line is moved to the corresponding point (f1) on the second movement destination line. The similar deformation processing step (S22) is completed by the movement of the nodes divided into the above two times.

  Similarly, when the existing part shape includes a curved surface, the movement of the shape node is divided into two steps. That is, in the first step, the movement is performed by replacing the fixed ridge line with the second movement source line in the first embodiment, and in the second step, the movement source line is changed to the second movement source line and the movement destination in the first embodiment. The movement is performed by replacing the line with the second movement source line and the fixed ridge line with the first movement source line. Therefore, in the second step, the distance from the first movement source line to the shape node is set to the second movement vector from the node belonging to the second movement source line to the corresponding point of the second movement destination line. The movement is performed according to the second shape node movement vector multiplied by the ratio divided by the distance from the node belonging to the first movement source line to the corresponding point on the second movement destination line.

  By applying the above process to each shape node, even if the existing part shape has a curved surface, it is possible to generate a new part shape by performing a similar deformation by moving two ridge lines.

  According to the configuration of the seventh embodiment, it is possible to perform similar deformation by moving two ridge lines of an existing part shape, and it is possible to efficiently design a new shape.

  DESCRIPTION OF SYMBOLS 1 Design data production | generation apparatus, 2 Computer, 4 Image display apparatus, 6 Design data memory | storage device, 8 Node addition means, 10 Movement origin line definition means, 11 Movement ratio designation means, 12 Movement destination line designation means, 13 Movement extension possibility indication Means, 14 normal plane sectional shape creating means, 15 correspondence designating means, 16 fixed ridge line designating means, 17 auxiliary correspondence designating means, 18 similar deformed sectional shape creating and rearranging means, 20 sectional shape rearranging means, 22 non-deformed region Designation means, 24 fixed shape designation means, 26 lower limit curvature radius designation means, 28 normal plane cross-sectional shape orientation designation means, 30 movement source line division means, 32 first movement source line definition means, 34 first movement destination line designation means, 36 second movement source line definition means, 38 second movement destination line designation means, 100, 102, 104, 106 shape of existing part, 101, 103, 10 , 107 New part shape, 110, 150 Moving source line, 112, 152 Moving destination line, 114 Fixed ridge line, 120 normal plane cross-sectional shape, 122 nodes, 124 Point on moving destination line, 126 Point belonging to fixed ridge line, 130 Non Deformation area, 140 fixed shape.

Claims (17)

A design data generation device that generates new design data of a part by performing shape deformation processing on the shape of an existing part,
And the node assigning means for assigning node point on the edge line of the existing parts of the shape,
A movement source line defining means for defining one of the ridge lines of the existing part shape as a movement source line;
Normal plane cross-section shape creating means for creating a cross-sectional shape of the existing part by a normal plane at the node on the movement source line;
A destination line designation means for designating a destination line that is a destination of the source line;
Fixed ridge line designation means for designating a fixed ridge line from the existing part shape;
For a normal plane cross-sectional shape that intersects with the fixed ridge line, a similar deformed cross-sectional shape creation that rearranges by applying a similar deformation that moves a node belonging to the movement source line to a corresponding point on the movement destination line, and Relocation means;
Cross-sectional shape rearrangement means for rearranging a normal plane cross-sectional shape that does not intersect the fixed ridge line to a corresponding point on the movement destination line;
With
A design data generation apparatus that generates a new part shape defined by a series of the rearranged similar deformed cross-sectional shape and normal plane cross-sectional shape. A design data generation device that generates new design data of a part by performing shape deformation processing on the shape of an existing part,
And the node assigning means for assigning node point on the edge line of the existing parts of the shape,
A movement source line defining means for designating one of the ridge lines of the existing part shape as a first movement source line and defining one of the ridge lines other than the first movement source line as a second movement source line;
Normal plane cross-sectional shape creating means for creating a cross-sectional shape of the existing part by a normal plane at the node on the first movement source line;
A move destination line designating unit for designating a first move destination line that is a move destination of the first move source line and designating a second move destination line that is a move destination of the second move source line;
For a normal cross-sectional shape that intersects the second movement source line, the node belonging to the first movement source line is moved to a corresponding point on the first movement destination line, and the second movement Similar deformation cross-sectional shape creation and rearrangement means for performing rearrangement by performing similar deformation to move a node on the original line to a corresponding point on the second movement destination line;
Cross-sectional shape rearrangement means for rearranging a normal plane cross-sectional shape that does not intersect the second movement source line to a corresponding point on the first movement destination line;
With
A design data generation apparatus that generates a new part shape defined by a series of the rearranged similar deformed cross-sectional shape and normal plane cross-sectional shape. In the design data generation device according to claim 1,
Comprising a shape node assigning means for assigning shape node in the method plan sectional on shape,
In the similar deformation, the shape node has a movement vector from a node belonging to the movement source line of the normal plane cross-sectional shape to a corresponding point of the movement destination line, and a distance from the fixed ridge line to the shape node. Design data characterized by moving in accordance with the shape node movement vector multiplied by the ratio divided by the distance from the node belonging to the movement source line to the corresponding point on the movement destination line, and the normal plane cross-sectional shape being similarly deformed Generator. In the design data generation device according to claim 2,
Comprising a shape node assigning means for assigning shape node in the method plan sectional on shape,
In the similar deformation, the shape node is moved from the second movement source line to a first movement vector from a node belonging to the first movement source line to a corresponding point of the first movement destination line. Moving according to a first shape node movement vector multiplied by a ratio of the distance to the shape node divided by the distance from the node belonging to the first movement source line to the corresponding point on the first movement destination line;
Further, the second movement vector from the node belonging to the second movement source line to the corresponding point of the second movement destination line is set to the distance from the first movement source line to the shape node. Moving according to a second shape node movement vector multiplied by a ratio divided by the distance from the node belonging to the movement source line to the corresponding point on the second movement destination line,
A design data generation apparatus, wherein the normal plane cross-sectional shape is similarly deformed. In the design data generation device according to any one of claims 1 to 4 ,
A movement rate designation means for designating a rate of movement of the node and normal plane cross-sectional shape from a node on the movement source line to a corresponding point on the movement destination line;
A movement extension propriety indicating means for specifying whether or not to limit the movement destination of the node to a corresponding point on the movement destination line;
With
In the similar deformation and rearrangement,
When the restriction is made, the node and the normal plane cross-sectional shape are moved from the node on the movement source line to the point corresponding to the ratio on the line segment connecting the corresponding point on the movement destination line,
When not limited, the node and the normal plane cross-sectional shape are moved to a point corresponding to the ratio on the extension line of the line segment connecting the corresponding point on the destination line from the node on the source line. Design data generation device. In the design data generation device according to any one of claims 1 to 5 ,
Correspondence specifying means for specifying correspondence between a node on the movement source line and a point on the movement destination line;
In the similar deformation and rearrangement,
The design data generating apparatus, wherein the node is moved to a point according to the designation together with a normal plane cross-sectional shape of the node. In the design data generation device according to claim 6 ,
The correspondence includes an equal internal ratio correspondence corresponding to a point that internally divides the destination line with an internal ratio equal to an internal ratio in which the node internally divides the movement source line,
When the equi-divided ratio correspondence is specified,
In the similar deformation and rearrangement, a node having an internal division ratio A on the movement source line and a normal plane sectional shape of the node move to a point having an internal division ratio A on the movement destination line. Design data generator. In the design data generation device according to claim 6 ,
The correspondence includes a destination line perpendicular correspondence corresponding to a point where the node is a point on the destination line, and a perpendicular line dropped from a point on the destination line intersects the node of the source line,
When the destination line perpendicular correspondence is specified,
In the similar deformation and rearrangement, the node and a normal plane cross-sectional shape of the node to a point on the movement destination line that is perpendicular to the point on the movement destination line can intersect the node of the movement source line The design data generation device characterized by that the move. In the design data generation device according to claim 6 ,
The correspondence includes a source line perpendicular correspondence in which the node corresponds to an intersection of a normal plane at the node and the destination line,
When the destination line perpendicular correspondence is specified,
In the similar deformation and rearrangement, the design data generation apparatus characterized in that the node and the normal plane cross-sectional shape of the node move to the intersection of the normal plane at the node and the movement destination line. In the design data generation device according to claim 6 ,
The correspondence includes a plane that is parallel to a plane in which the node is designated, and a designated plane that corresponds to a point where the plane including the node and the destination line intersect,
Comprising plane indicating means for indicating the one plane;
When the specified plane correspondence is specified,
In the similar deformation and rearrangement of the normal plane cross-sectional shape,
The node on the movement source line and the normal plane cross-sectional shape of the node are planes parallel to the specified plane, and the plane including the node moves to a point intersecting the movement destination line. Design data generator. In the design data generation device according to claim 8 or 10 ,
In the correspondence designated by the correspondence designation means, the node having no corresponding point on the movement destination line and auxiliary correspondence designation means for designating the correspondence destination of the normal plane cross-sectional shape of the node as auxiliary correspondence designation,
In the similar deformation and rearrangement,
In the correspondence designated by the correspondence designating means, the node having no corresponding point on the movement destination line is moved to a point corresponding to the auxiliary correspondence designation together with the normal plane sectional shape of the node. Data generator. In the design data generation device according to claim 11 ,
In the auxiliary correspondence designation, the node is a point on the extension line of the movement destination line, and the movement line extension auxiliary correspondence designation corresponding to the point where the perpendicular line dropped from the point intersects the node of the movement source line Including
When the destination line extension auxiliary correspondence specification is specified,
In the similar deformation and rearrangement, in the correspondence designated by the correspondence designating means, the node having no corresponding point on the movement destination line and the normal plane cross-sectional shape of the node are points on the extension line of the movement destination line. A design data generation apparatus, wherein a perpendicular line dropped from the point is moved to a point where the node intersects the node of the movement source line. In the design data generation device according to claim 11 ,
The auxiliary correspondence designation includes a closest point auxiliary correspondence designation in which the node corresponds to the nearest point on the destination line,
When the closest point auxiliary correspondence specification is specified,
In the similar deformation and rearrangement, in the correspondence designated by the correspondence designating means, the node having no corresponding point on the movement destination line and the normal plane sectional shape of the node are moved to the nearest point on the movement destination line. A design data generation device characterized by causing In the design data generation device according to any one of claims 1 to 13 ,
A lower limit curvature radius defining means for defining a lower limit value of the curvature radius of the movement source line;
Auxiliary node providing means for arranging a new auxiliary node at a position where the curvature on the movement source line is smaller than the lower limit radius of curvature and divided on the movement source line between the nodes by n (n: an integer of 1 or more). When,
With
In the normal plane cross-sectional shape creating means, create an auxiliary normal plane cross-sectional shape of the existing part at the auxiliary node,
The design data generation apparatus characterized by performing the similar deformation and rearrangement on the auxiliary method plane cross-sectional shape. In the design data generation device according to any one of claims 1 to 14 ,
An arrangement surface indicating means for indicating a surface where the similar deformed and rearranged cross-sectional shape is arranged at a point on the movement destination line;
The design data generation is characterized in that the similar deformed and rearranged cross-sectional shape is arranged on the designated arrangement surface, and a new part shape defined by a series of the arranged cross-sectional shapes is generated. apparatus. In the design data generation device according to claim 15 ,
The arrangement plane instruction includes a movement destination normal plane arrangement designation that is a normal plane of the movement destination line,
A design data generation apparatus, wherein the similar deformed and rearranged cross-sectional shapes are arranged on the normal plane at points on a movement destination line. In the design data generation device according to claim 15 ,
The placement plane instruction includes a movement source normal plane designation that is a plane parallel to the normal plane of the movement source line of the movement source,
The design data generation apparatus, wherein the similar deformed and rearranged cross-sectional shapes are arranged on a plane parallel to a normal plane of the movement source line at a point on the movement destination line.

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