JP3390462B2 - Data processing method in tooling CAD device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it possible to easily change the shape of a part in a CAD drawing, and also to examine interference between tools. The present invention relates to a data processing method in a tooling CAD device. 2. Description of the Related Art In recent years, parts design has been replaced by computer-based C drawings using a computer instead of paper-based design drawings.
Mostly by an AD device. In this CAD device, the shape data of the parts to be used is stored as a database, and when drawing a certain product, first, the original part shape serving as a reference is called and arranged at a predetermined position. It is repeated to arrange another part at a predetermined position of this part. Also, when changing the shape of a part with a product created in this way,
Processing such as calling the placement destination of the part and manually correcting the shape of the part, and similarly calling and deleting the part before the change and disposing a part with a new shape are performed. . The above processing will be described in more detail with reference to the drawings. FIGS. 8 and 9 are diagrams for explaining a case where the shape of a part in each drawing drawn by the CAD apparatus is changed. What is shown in this drawing is a tool used in a production line. Data for creating a drawing as shown in FIGS. 8 and 9 is stored in a shape database and an arrangement information database as shown in FIG. FIGS. 8A and 9A show 1
It is a tooling frame diagram for each axis, and (B) of both figures is a turret layout diagram to which the ruling is attached. 9 (C) and 9 (D) and FIG. 8 (C) are general views of the tooling. When a drill as shown in (A) of both figures is mounted on an existing mounting head, processing is performed in the order of the flowchart shown in FIG. First, the tooling CAD apparatus creates a tooling diagram as shown in FIGS. 8 and 9A based on the respective information stored in the shape database and the arrangement information database (S1). Next, by combining the component drawings created in this way, a turret layout diagram as shown in FIG.
(C) and an entire tooling diagram as shown in FIGS. 9 (C) and 9 (D) is created (S2). Then, an interference study is performed based on the data of the tooling general view created as described above. Since the detailed processing of this interference study is shown in FIG. 11, the description is omitted here (S3). As a result of the interference examination, if it is determined that there is interference, all the drawings in which the tooling is used are manually corrected (S4, S6). As a result of the reexamination of the interference after the manual correction, if the interference disappears, the drawing is issued (S5). [0004] The above-described interference study is performed according to a procedure as shown in a flowchart of FIG. When the interference examination process is started, a moving object, that is, a turret allocation diagram and an interfering object existing on the operation path of the moving object are prepared (S1).
1), a movement start point and a movement end point of the moving object are prepared by designating coordinates or appropriately on a screen (S12). Next, a moving point of the moving object is designated, and the moving object is simulated toward the point (S13, S1).
4). In this movement, the presence or absence of interference between the moving object and the interfering object is examined. This interference examination is performed while observing a moving object moving on the screen or by an automatic interference check. If it is determined in this study that there is no interference, the process is terminated and the motion path of the moving object is set as the actual motion path. On the other hand, if they do interfere with each other, a new point different from the designated point that does not interfere is reset and the above processing is performed (S15, S1).
6). [0005] However, in such a conventional CAD apparatus, when a part shape or arrangement in a CAD drawing is corrected, a part to be corrected is arranged. It is necessary to call up all the drawings one by one and make corrections in the above-described procedure, so that the correction requires a lot of time and trouble. This is the same even when there are many parts to be corrected in one drawing. In addition, when the interference of a tool whose shape or arrangement has been changed as described above is to be examined, a new moving point is designated again to determine a route that avoids interference. Also, the work of interference examination was not easy. The present invention has been made in view of such a problem of the related art, and even if a correction occurs in a CAD drawing, the correction can be easily performed. Tooling CAD that can be automatically performed based on interference study data
An object of the present invention is to provide a data processing method in a device. SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a data processing method in a tooling CAD apparatus.
A method, comprising: information relating to the shape and position of a tool comprising a plurality of tool components; and a tool configuration.
Information on the shape of the part and information on the arrangement positions of the tool components in the tool,
Stored with information and attributes related to the shape of the component
Location information and information on the operation path of the tool
If the information about the shape and position of the locating member around the motion path, the a read from the storage device and the tool and the arrangement was disposed on the display, the tool disposed on the display, read The tool is moved linearly at a unit interval between a movement start point and a movement end point in the operation path of the tool, and when the tool is moved from the movement start point to the movement end point, If the tool interferes with the placement member, the three-dimensional
Calculate the amount of interference in each direction and register the interference content
The arrangement information tool stored with the attribute
A part changing process in which a ring CAD device changes the constituent parts
In the three-dimensional direction of the tool with respect to the placement member
Each interference amount calculated for each unit interval the tool on the display, in order from the computed priority direction set each interference amount or more in advance of the three-dimensional directions, Ru is interference avoidance is retracted interference Use together with avoidance processing
It is characterized by doing. According to the present invention having the above-described structure, the interference of the tool is automatically examined based on the stored information on the operation path of the tool and the arrangement around the operation path. will be able to, it is possible automatically store a new non-interfering path, the result of the interference study, interference
If found, register the interference details and
Change the components that make up. An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of a tooling CAD apparatus that performs a data processing method according to the present invention.
As shown in the figure, C for creating CAD drawings and examining interference
PU2 has a keyboard 2 for inputting various commands.
And a CRT 3 for displaying the generated CAD drawing are connected as external devices. A storage device 4 is connected to the CPU 1 and includes a set of shape data of each tool component (information on the shape of each tool component).
Shape database is broadcast), each tool was arranged position or location information data of the components in the respective tool component shape data and attribute to have a by placement stored information database, for each tool component A set of data on combinations (ie, unifying tool components)
There are stored four databases: a combination logic database which is information on the shape of the entire tool formed , and an interference content registration database which is a set of data on simulation. The data processing method of the present invention is executed by the device configured as described above, and the processing is performed as follows based on the operation flowchart shown in FIG. Become. Here, the tool component refers to the tool 10
In the present invention, the tool is composed of a plurality of tool components. In the description of FIG. 2, the tool components are simply referred to as “components”. The operation of this flowchart will be described with reference to FIGS. 4 and 5. First, when the operator designates a predetermined CAD drawing via the keyboard 2, the CPU 1 creates each part drawing based on the shape database stored in the storage device 4. This shape database is data indicating what shape each part has (S1). When the creation of each part drawing is completed, the above-mentioned part drawings are combined based on the respective data of the arrangement information database and the combination logic database similarly stored in the storage device 4 to create a designated CAD drawing. Display on CRT3. The arrangement information database is data indicating where each part is arranged, and the combination logic database is data indicating how each part is combined (S2). The CAD drawing is generated by such a procedure because the drawing is composed of an assembly drawing, which is an assembly of parts, and a part drawing showing the parts themselves in detail. Therefore, according to the above procedure, first, the shape of each component is formed based on the information in the shape database, and then, based on the data in the combination logic database and the arrangement information database, the shapes of FIGS. An overall shape of the tool 10 as shown in FIG. 5 is created.
In addition, the interference object 11 shown in these figures is also generated based on the data stored in the above-mentioned database, and the shape is arranged based on the position of the machining hole. Next, the interference of the moving object, that is, the tool in the CAD drawing created in this way is examined.
This interference examination is performed based on the data in the interference content registration database. This interference content registration database stores an operation path when the tool 10 shown in FIGS. 4 and 5 is simulated and moved (this is the same as the operation path of the normal tool during the machining operation, and the tool changes according to the machining operation). ), And data such as interference points.
This interference study is specifically shown in FIG.
This is performed by simulating the path connecting the movement point 12 and the movement end point 13 as shown (S3). As a result of the interference examination, if interference between the tool 10 and the interfering object 11 is recognized as shown in FIG. 5 (S4), the details of the interference are registered in the storage device 4 and the original part drawing Is corrected. For example, as a modification of the tool component, a drill having a length such that interference as shown in FIG. 4 is avoided is attached (S5). When such a part is corrected, the drawing is automatically corrected for all the CAD drawings on which the part to be changed (here, a drill) is mounted. This is performed by replacing the shape information of the exchanged drill with the shape information of the exchanged drill.
It is stored with the shape data and attributes of each part.
This is performed based on the placement information data . Therefore, all the drawings in which the drills to be replaced are arranged are automatically replaced with the new drill shapes (S6). If the change in the shape of this component also affects the arrangement status of other components, the process of S2 is performed again, and the interference is examined. On the other hand, if the influence is not exerted, the process returns to S4 to check for interference (S7). The above processing is repeated as necessary, and it is confirmed that there is no interference. If there is no need for component correction, a drawing is issued (S
8). As described above, according to the data processing method of the present embodiment, when the shape of an arbitrary tool component is changed, all the drawings in which the tool component is to be arranged are automatically corrected. Will be. For this reason, the efficiency of the work required to change the shape of the tool component can be improved. FIG. 3 is a flowchart in which not only the above-described interference examination is performed, but also the operation path is further set automatically based on the presence or absence of interference. Hereinafter, the operation of this flowchart will be described with reference to FIGS. 6 and 7. First, after performing a component change process or the like, when performing an interference study, a moving object, for example, a tool 10 and an interference object 11 are arranged at predetermined positions as shown in FIG. 6 (S11). And this tool 1
A movement start point 12 and a movement end point 13 of 0 are set (S12). Further, a grid setting area indicating a moving area as shown in FIG. 6 and its grid size are set (S13). Finally, when the tool 10 is simulated and moved to cause interference, a priority direction (X, Y, Z directions) for avoiding the tool 10 is specified in order to avoid the interference (S14). All of the above settings are performed by the operator via the keyboard 2.
When a simulation movement is commanded via the keyboard 2 in this state, the CPU 1 causes the tool 10 to move linearly for each set side of the grid dimension from the set movement start point to the movement end point (S15). After this movement is completed, this tool 10 is
An interference study is performed to determine whether or not interference occurs (S1).
6). If there is no interference as a result of the interference examination, the process is terminated. Needless to say, this interference examination is performed after the tool 10 has been performed on all the grids set from the movement start point 12 to the movement end point 13, and then the processing is terminated. Here, processing for one side of the lattice is described for convenience. On the other hand, if it is determined that there is interference as a result of the interference examination, the interference amounts in the X, Y, and Z directions of the interference portion are calculated (S17,
S18). Next, according to the priority direction set in S14, a process of searching for a lattice point near the position retracted by the interference amount or more is performed. For example, if the degree of interference is three sides of the lattice in the X direction, two sides of the lattice in the Y direction, and the priority direction is the X direction,
A process of retreating four sides in the X direction is performed.
If any interference still occurs in the Y direction, Y
A retreat process in the direction is also performed (S19). When the interference avoidance processing is performed in this manner, the point at which the interference avoidance is performed is set as an intermediate passing point of the operation path. FIG. 7 shows a case where interference occurs at two places in the simulation between the movement start point 12 and the movement end point 13, and the point at which the interference avoidance processing is performed in that case is the intermediate passing point 14. (S20). The above processing is repeated until no interference occurs. Therefore, as a result of the simulation movement based on the movement start point 12 and the movement end point 13 set by the operator, as shown in FIG. Is registered as an operation route. on the other hand,
As shown in FIG. 7, when interference occurs as a result of the simulation movement between the two points, the point where the interference is avoided is registered as an intermediate passing point, and the motion path is changed from the movement start point 12 to the intermediate point. The route is automatically registered as a route to the movement end point 13 via the passing point 14. This eliminates the need for the operator to perform an operation path that avoids interference while relying on feeling, and the operation path can be determined very easily. As described above, according to the data processing method of the present invention, when a certain part is used in many drawings,
By modifying the original part, it is possible to provide feedback to all drawings in which the part is used. The same applies to the case where a large number of such components are used in a drawing. If the modification or change of a part affects other parts, the device automatically points out the problematic part and automatically changes the dimensions, format, and shape of the problematic part. It is also possible.
Furthermore, if a tool such as a moving object is changed after performing an interference study, the contents of the previous interference study are registered, and the same interference study is performed again using the changed tool. Automatically, and an interference check can be performed. If the interference avoidance processing is further used, the operation path is automatically determined.
Therefore, the operator only needs to input the data related to the change or modification of a certain part, and not only will the replacement of the old and new parts be performed automatically, but also the automatic setting of the operation route accompanying the change etc. will be performed. , CAD drawing rewriting work, interference examination work, and operation path selection work can all be efficiently performed. As described above, according to the present invention, the interference of the tool is automatically examined based on the stored information on the operation path of the tool and the arrangement around the operation path. As well as automatically store new non-interfering paths. In addition,
If interference is found as a result of the negotiations,
Register the contents and change the tool components that make up the tool
can do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration diagram of a tooling CAD apparatus that executes a data processing method according to the present invention. FIG. 2 is a flowchart showing a data processing method of the present invention. FIG. 3 is a flowchart showing another data processing method of the present invention. FIG. 4 is a diagram provided for explanation of the operation of the flowchart in FIG. 2; FIG. 5 is a diagram provided for explanation of the operation of the flowchart in FIG. 2; FIG. 6 is a diagram provided for explanation of the operation of the flowchart in FIG. 3; FIG. 7 is a diagram provided for explanation of the operation of the flowchart in FIG. 3; FIG. 8 is a diagram illustrating an example of a shape and an arrangement state of components drawn by a general CAD device. FIG. 9 is a diagram provided to explain a case where the part shape of each drawing drawn by a general CAD device is changed. FIG. 10 is a flowchart illustrating a procedure for arranging a component at a predetermined position. 11 is a flowchart showing more specific processing of the interference examination processing performed by the flowchart of FIG. 10; [Description of Signs] 1 CPU 2 Keyboard 3 CRT 4 Storage device 10 Tool 11 Interfering object 12 Moving point 13 Moving end point 14 Intermediate passing point

Continuation of the front page (56) References JP-A-2-48774 (JP, A) JP-A-1-84310 (JP, A) JP-A-1-290006 (JP, A) JP-A-1-216746 (JP) , A) JP-A-63-127851 (JP, A) JP-A-60-127950 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 17/50

Claims (1)

(57) [Claims 1] Data processing in a tooling CAD device
Of a tool comprising a plurality of tool components
And position information, and the
And the information on the arrangement positions of the tool components in the tool, the information being related to the shape of the tool components.
Information that is stored with information and attributes
If the information about the path of movement of the tools, and information about the shape and position of the locating member around the movement path, and the arrangement thereof with the tool read from the storage device was placed on a display, on the display The arranged tool is moved linearly at a unit interval between a movement start point and a movement end point in the operation path of the read tool.
Was, when you are moving the tool to the movement end point from the movement start point, when the said tool and the said locating member is interfered, it the three-dimensional direction of the tool relative to the locating member
Calculate the interference amount, register the interference content, and
Change processing for changing the constituent parts by a CAD system
And the three-dimensional direction of the tool with respect to the arrangement member.
The amount of interference les calculate interference for each unit interval the tool on the display, in order from the computed priority direction set each interference amount or more in advance of the three-dimensional directions, Ru is interference avoidance is retracted A data processing method in a tooling CAD apparatus, characterized by using both of the avoidance processing and the avoidance processing .