KR20010083274A - Rapid Prototyping Method Performing both Deposition and Machining - Google Patents

Abstract

PURPOSE: A hybrid rapid prototyping method performing both deposition and machining is provided to effectively shorten total forming time by preventing an object from being chopped for forming small shapes, and accurately manufacture various shapes in which the surface of the prototype formed material is not rough by machining the machining feature segments at once. CONSTITUTION: The hybrid rapid prototyping method performing both deposition and machining comprises a prototype back surface machining step (11) of roughing and finishing the back surface of a prototype; a prototype deposition step (12) of coating an adhesive on the back side machined prototype and depositing the coated prototype after rotating the back side machined prototype to 180 degrees of an angle; and a prototype front surface machining step (13,14,15,16) of roughing, finishing, and shape profiling the front surface of the deposited prototype, wherein the method further comprises performing a main machining cycle process consisting of the prototype back surface machining step, the prototype deposition step and the prototype front surface machining step repeatedly; and a subsidiary process of drilling, milling or grinding.

Description

Rapid Prototyping Method Performing both Deposition and Machining}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate laminate type rapid start method, and more particularly, to a plate laminate type rapid start method having a new concept of performing lamination and cutting in combination.

When developing a new product, a prototype is usually manufactured to detect design errors and verify the design in the early stages of product development. Among these, the rapid start system can quickly produce a prototype of three-dimensional shape using three-dimensional CAD data without the need for additional setup process or tool design for machining.

The present invention relates to a plate laminated rapid start method of such a rapid start system.

In the conventional plate stacking rapid start method, since the shape is realized only by the lamination process, the overall shape is divided into a predetermined thickness layer of thin thickness, and the overall shape is manufactured by laminating the machined plate. Therefore, there is a problem in that the molded surface becomes rough, for example, a stepped shape is formed on the molded surface. This requires a separate post-processing work.

In addition, in the conventional plate stacking rapid start method, since the objects are collectively cut in a predetermined direction and the molding operation is performed based on them, the shape accuracy of the object or the purpose of use of the molded product is not taken into consideration, resulting in poor molding accuracy. There are disadvantages.

In addition, in the conventional plate lamination rapid start method, since the overall shape is divided into thin layers having a constant thickness, in the case of a very complicated shape, a very large number of laminations may be required, and molding may be impossible in practice.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art carried out only by the lamination process, which can effectively reduce the overall molding time by preventing the object from being chopped to process small shapes, and reduce the processing feature shapes once. It is intended to provide a plate laminated rapid start method that can produce various shapes accurately without rough surface of the prototype molding.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view for explaining a main machining cycle process and a secondary machining process constituting a plate lamination rapid start method for performing lamination and cutting in combination with the present invention;

2 is a view showing a process planning process including the step of extracting MFS and DFS in the plate laminated rapid start method according to the present invention,

3 is a view showing a hint of 'hole' as an MFS in the rapid start method according to the present invention;

4 is a view showing a data structure of a hole MFS (M _hole );

5 is a view showing a hint of 'slot' as an MFS in the rapid start method according to the present invention;

6 is a view showing an example of a 'pocket' MFS (M _pocket ) as MFS in the rapid start method according to the present invention;

7 is a view for explaining a problem that may occur when using a thick plate when lamination in the plate type rapid start method, Figure 7a shows the laminated thickness in the prior art, Figure 7b when using a thick plate Drawing showing the lamination thickness of the

8 is a view illustrating a relationship between a tool approaching direction and machined surfaces in a plane dividing process during a four-step process for generating a DFS in the rapid start method according to the present invention;

9 is a view showing an example of a preliminary-DFS generation process of the four-step process for generating the DFS in the rapid start method according to the present invention,

10 is a view showing a partitioning process of the DFS in the rapid start method according to the present invention;

11 is a view showing the data structure of the DFS generated in the final step of the process of creating the DFS in the rapid start method according to the present invention,

12 is a view showing a main machining cycle process for DFS and a sub-machining process for MFS when the plate laminated rapid start method for performing lamination and cutting according to the present invention is applied to an engine cylinder block.

FIG. 13 is a diagram illustrating the reduction in the number of DFSs required by the MFS concept in the rapid start method according to the present invention. FIG.

In order to achieve the object of the present invention as described above, the plate laminated rapid start method for performing the lamination and cutting in accordance with the present invention, the sheet back surface processing step of roughing and finishing (a); (B) a plate stacking step (b) of rotating the plate processed by the rear side by applying the adhesive by applying the adhesive and stacking the previous plate by the step (a); The sheet front surface processing step (c) for roughing and finishing the front surface of the previous sheet laminated in the step (b) and the shape contour processing, including the plate back surface processing step (a), the sheet lamination step (b) and the plate material It is characterized in that it comprises repeatedly performing the main machining cycle process consisting of the front machining step (c), and the secondary machining process of drilling, milling or grinding.

Hereinafter, with reference to the accompanying drawings will be described in detail a plate laminated rapid start method to perform the lamination and cutting according to the present invention in detail.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view for explaining a main machining cycle process and a sub machining process constituting a plate lamination rapid start method for performing lamination and cutting in combination with the present invention.

As shown in Figure 1, the plate laminated rapid start method according to the present invention, the back plate processing step 11, the step of laminating the plate 12, the front plate processing step (13, 14, 15, 16) A submachining process 17 which comprises a main machining cycle process and which consists of drilling, milling or grinding as a submachining process for machining small shapes.

In the back plate processing step 11, roughing and finishing the back surface is performed.

In the plate stacking step 12, the plate is processed by the reverse side of the plate back side step 11, and then the adhesive is applied and the previous plate is stacked 12.

In the front face machining step (13, 14, 15, 16), roughing, finishing, and contour contouring are performed. Specifically, the front face is roughed (13), the contour is cut (14), and unnecessary parts are removed. After (15) and finishing (16).

In the rapid start method according to the present invention, the plate back processing step, the sheet lamination step, and the plate front processing step as described above are repeatedly performed. On the other hand, in the course of repeating the above steps in order to process a partially complex and small shape, it is subjected to a sub-processing step including drilling, milling or grinding.

As shown in Figure 1, the rapid start method according to the present invention, compared with the conventional rapid start method by laminating the plate is determined to laminate the contour, the lamination surface is rough because the lamination and cutting is performed Solve the problem.

In addition, sub-processing steps such as drilling, milling or grinding can be applied where necessary during complex lamination and cutting to easily process complex and small shapes. Therefore, it is possible to shorten the overall molding time by preventing unnecessary division of objects for complicated and small shapes, as well as to maintain shape accuracy by machining such processing features at once.

In the following description, additional _ Machining Feature Segments (hereinafter referred to as 'MFS') and lamination _ characteristics in applying a plate lamination rapid start method for performing lamination and cutting according to the present invention in combination. _Deposition Feature Segment (hereinafter referred to as 'DFS') will be described.

Figure 2 shows a process planning process comprising the step of extracting MFS and DFS in the plate laminated rapid start method according to the present invention. In order to execute the rapid start method, when the shape design of the product is completed, the shape designer converts the three-dimensional solid model to be manufactured into STEP physical file by using the STEP AP203 converter provided by the modeler. The MFS is extracted from the input shape information (FIG. 2A) (FIG. 2B), and the extracted MFS is removed from the solid model to convert the shape into a simple form (FIG. 2C). Based on this, the geometric information of all the surfaces constituting the model is analyzed (FIG. 2D) and decomposed into DFS, which is the minimum unit of the stack (FIG. 2E). The MFS and DFS generated in this way constitute all the detailed processes, and the process plan is completed by effectively arranging these processes and generating process information corresponding to each process.

First, MFS will be described in the plate laminated rapid start method according to the present invention.

In the sheet lamination rapid start method according to the present invention, the MFS is a machining feature that can be processed by a tool approaching, and each machining feature must be made in one step in any machining step, and the MFS machining step is performed in all lamination steps. It is generally carried out after this is completed, but in some cases it may be inserted in the middle of the lamination process. For example, if the tool is inaccessible due to the lamination of the top, the machining process of the MFS is performed before the lamination process is performed.

In the present invention, the MFS is extracted based on basic geometric inference and additional user input, and the machining information for the first extracted MFS is determined based on the machining information database and the machining information for processing them is constructed.

In geometric reasoning, all geometric shapes constituting a given object are analyzed and selectively extracted feature shapes of a desired shape are proposed to the user. The user input is to select a feature shape desired by the user and input information, and the machining information database provides a criterion for evaluating the workability of the feature shape selected by the geometric inference and the user input, and finally enters the determined MFS. Provide processing information.

In the present invention, geometric inference is implemented based on a hint-based feature shape recognition technique. A hint is the minimum condition that can be used to determine the existence of a particular feature. If a feature of interest exists in the object, even if it intersects with another feature several times, the hint is at least a feature of the feature. Does not disappear.

In order to implement a hint-based MFS extraction method, the MFS type to be extracted is determined, and for each MFS, a minimum hint condition of the MFS is generated. It also implements geometric inference that creates the feature object by fully defining the MFS from the corresponding hints of the finally obtained MFS.

In the rapid start method according to the present invention, MFS of a hole that can be machined by a drilling process, a slot that can be machined by a milling process, a pocket and a micro-machined curved surface is presented. Holes, pockets, and slots are all machining features that exist in many common mechanical parts. If such machining features are selectively removed from the model, the total number of stacked features is significantly reduced, thus reducing total molding time. have.

Figure 3 shows a hint of the hole MFS in the rapid start method according to the present invention, Figure 4 shows the data structure of the hole MFS (M _hole ). As seen in Figure 3, the tip (h _Mhole) for the MFS hole _(hole M) is a wall consisting of a cylinder surface. As shown in Fig. 4, the structure for storing the hole MFS (M _hole ) can be largely divided into a part dealing with shape information and a part dealing with machining information, all of which are finally used as information for creating a machining process. .

5 shows a hint of 'slot' as MFS in the rapid start method according to the present invention. In the method according to the invention, a hint for extracting the slot MFS (M _solt ) h _Msolt is a pair of opposing parallel walls. When the bottom surface, which is the remaining element that constitutes the slot, is found based on the parallel pair of walls, this process extracts the variables necessary for the definition of M _solt and creates an instance corresponding to each M _slot . A model shown in the 5 contains a total of 5 M _slot, the basic structure for storing M _slot is similar to the structure for storing the M _hole, and these also are finally used as the information for generating the machining process.

Figure 6 shows an example of a 'pocket' MFS (M _pocket ) as MFS in the rapid start method according to the present invention. The pocket is composed of a bottom surface having the same cross-sectional shape and a set of wall surfaces surrounding the pocket formed while the bottom surface is swept in a vertical direction. These pockets are not easy to extract automatically because the overall shape varies greatly depending on the shape of the cross section or the direction of sweeping. In general, a lot of techniques are used to extract information using cross-sectional information formed in a plane perpendicular to the tool approach direction.

On the other hand, if the approach direction of the tool is possible at all points of the hemisphere, it is impossible to extract the pocketing feature shape based on the general method described above. In this case, the extraction of the pocket depends on the user's input for more accurate and efficient work.

Typically, when the process designer M _pocket being selected is deulyimyeo of relatively small size present in the side of the body pocket designer to select one of the components of M _pocket to be extracted by configuring the remaining elements creates an instance of M _pocket Done.

Figure 6 shows an example of an M _{pocket that} the process designer can generally select in the rapid start method according to the present invention. In Figure 6, A, B, and C are pockets of relatively small sizes and those selected as M _pockets , and D is a pocket shape, but is an example of machining in a lamination process cycle without separating into M _pockets . . The form of storing M _pocket is similar to that of storing other MFS.

The most important thing in the extraction of MFS is the processability. With regard to the MFS extracted primarily, it is determined whether the shape can be actually processed, and only the specific shape finally selected becomes MFS having meaning. In the present invention, the candidate MFSs extracted from the primary MFSs are evaluated based on the following three evaluation criteria, and only candidate MFSs satisfying all conditions are determined as final MFSs.

The first criterion for evaluating feasibility is the most basic, which is to determine whether the target MFS can be machined with the currently available tools. When storing the tools in the form of a table, it is possible to determine the possibility of machining the candidate MFS by comparing the information of the MFS to be processed with the contents of the table.

The second criterion for evaluating the feasibility is to determine whether the approach direction of the tool for machining is a possible direction. If a machine tool capable of 5-sided machining in a single setup is used, it is theoretically possible to machine all MFS in terms of the approach direction of the tool, as it involves turning the plate over in the lamination cycle. Therefore, at some point in time for each MFS, machining is only required to determine whether the tool will be accessible.

The third criterion for evaluating the feasibility is a process of checking the machining incompatibility caused by the shape of the object, and checking the interference between the tool and the shape during the cutting process. In the third processability evaluation, the machining timing changes at the same time as the processability check. In other words, it holds a tool for machining the MFS for any MFS, and also defines the approach direction of the tool, but adjusts the machining point to a step before lamination that the tool can access when the tool cannot be approached due to the surrounding shape. Or if it is not possible to process in this way, it is deleted from the candidate MFS list.

In this way, the extracted MFS is removed from the original solid model and the shape is converted to a simple form. However, since the shape information of the model from the STEP AP203 transducer does not include information related to the feature shape, it is impossible to accurately remove the shapes extracted from the MFS from the original model.

Therefore, the present invention proposes a method of logically excluding the extracted MFS in this case, rather than actually removing the extracted MFS from the CAD model. In other words, by attaching a logical tag to the planes defining the extracted MFS, the planes are excluded from the search during DFS creation. The purpose of removing the extracted MFS from the original model is to prevent unnecessary DFS creation due to the shapes of MFSs present on the model at the time of DFS creation. Only logically exempt the data from the database, which does not affect the resulting DFS.

In the rapid start method according to the present invention, lamination and cutting are carried out in combination, so that a considerably thicker plate is laminated. Therefore, the conventional method of sectionalizing an object with a very small thickness at the time of shaping an arbitrary shape cannot be applied as it is. When using a thick plate as in the present invention, some problems may occur.

7 is a view for explaining a problem that may occur when using a thick plate when lamination in the plate type rapid start method. Fig. 7A shows the lamination thickness in the prior art, and Fig. 7B shows the lamination thickness when using a thick plate. The portion denoted by the circular portion in Fig. 7B is a portion in which a tool cannot be approached in any one direction up and down in one layer when the conventional method is applied as it is. Therefore, in order to produce a desired shape by laminating thick plates, the shape must be decomposed into basic units called Deposition Feature Segments (DFS) based on the shape information of the object.

The process of extracting the DFS is performed after the above-described MFS extraction process is completed, and the shape elements extracted by the MFS are excluded from the shape information extraction object for generating the DFS. In addition, when the DFS generation is completed, the entire process is formed together with the MFSs, and the overall processing sequence planning is completed through the evaluation of the entire process.

To this end, the extracted MFS is removed from the original solid model, and the geometric information of all the faces constituting the model is analyzed based on the model whose shape is converted into a simple form, and is decomposed into DFS, which is the minimum unit of the stack.

All DFS must first be a shape that can be machined in at most two setups, and second, it must be no higher than the maximum thickness of the plate being supplied.

The fact that it should be able to be machined in two setups means that all faces (except vertical) that make up a single DFS geometrically must be visible in at least one of the up and down directions, which means that in the rapid start method according to the invention Is a condition resulting from the process of inverting and processing.

In addition, when generating the DFS, first, the shape is decomposed based only on the shape information of the object, and then each DFS is reconfigured with the limit of the maximum thickness of the plate that can be used. Ideally, the lamination process should be performed by feeding the plate as DFS is created, but in practice the maximum lamination thickness that can be used is limited in terms of hardware configuration and the plate thickness provided.

In order to create a DFS, the process is largely divided into four stages: face division, configuration of a pre-DFS, partition of a space, and division / merging of a DFS.

Once shape and MFS information is input, silhouette curves and additional curves connecting them are generated for all the faces constituting the object, and used as the boundary separating the facetable surfaces in front and back cutting. If these curves are not on existing edges, they are created as new edges to split the existing faces. The normal vectors of each of the divided faces have the same sign for the stacking direction in the same plane and are grouped according to the rules described later while tracking them to generate the first preliminary-DFS. After the spatial partitioning step of constructing the original model into a set of DFSs based on the boundary between the generated pre-DFSs, the height of the generated pre-DFS is smaller than the maximum height of the plate that can be supplied. Perform partitioning and merging on excess DFS. Finally, DFS is created and processing information is completed.

The four-step process for creating such a DFS will be described in detail.

FIG. 8 illustrates the relationship between the approach direction of the tool and the machined surfaces in the face dividing process during the four-step process for generating the DFS in the rapid start method according to the present invention. 8A is a case where the approach direction of the tool is the front side of the laminated sheet, and FIG. 8B is a case where the approach direction of the tool is the back side of the laminated sheet.

In the present invention, the surface accessible by the tool is limited to the surfaces visible in the direction in which the tool approaches. In other words, the surfaces constituting the DFS should be visible when the eyes are positioned on the upper and lower axes of the plate, assuming that any axis defining the stacking direction penetrates the plate.

When the DFS is generated under such conditions, the boundary between the DFSs is the positive or negative sign of the axis direction component of the normal vector among the shape information of the surface when the surface is defined based on the constant stacking direction. It is a place that changes from negative to positive, and the curve that defines it geometrically is called the silhouette curve.

Such silhouette curves are obtained for all the faces constituting the object to be shaped, and additional curves are also generated to connect them, and then the faces are divided based on them.

The reason for dividing the planes based on the silhouette curve in the present invention is that since the sign of the Z coordinate component of the normal vector is the same in each of the divided planes, the pre-DFS can be effectively configured by tracking and grouping them by plane. In particular, the faces divided by the additionally generated edges store in the data structure a marker that they are divided by the additional curves to propagate during the propagation work for the pre-DFS configuration performed later. The last side of the.

9 shows an example of a preliminary-DFS generation process among four steps for generating DFS in the rapid start method according to the present invention.

In the plane segmentation process, if all planes are divided and the Z coordinate components of the normal vector have the same sign in the same plane, they are grouped to form a preliminary-DFS. A pre-DFS is a set of faces that will create a DFS rather than a fully closed solid. When a new face is created at the boundary to be cut from an object, the pre-DFS is a fully closed solid DFS. Becomes

The grouping to configure preliminary-DFS is performed as follows. The data structure of all faces is configured to store the Z coordinate symbol of each normal vector, a symbol indicating a face cut by a curve added to connect a silhouette curve, and a pre-DFS ID to which it belongs. In the state in which the molding direction is determined, a set of faces having a sign of a normal vector and a set of (+) faces are grouped so as to form a lower part and a upper part of the pre-DFS, respectively.

In order to achieve this type of pre-DFS configuration, the set of interconnected faces having a normal vector of (-) and the set of interconnected faces of (+) should be combined at a silhouette curve. In other words, assuming that the user traces the connected plane starting from any plane with the sign (-) and visits the connected plane only once, the number of moves from the set of the plane with the sign (-) to the set of the plane with the (+) is calculated. Allowing only one time allows the configuration of the preliminary-DFS.

Therefore, the surface propagates so that it moves only once from the set of (-) faces to the set of (+) faces, and the sign changes again after the change of sign for all propagation paths. A preliminary-DFS configuration is completed when we meet or meet facets divided by additional curves to connect the silhouette curves. Of course, if you encounter a plane or plane that defines the MFS during the propagation process, ignore it and continue the propagation process to the next plane.

9 shows an example of applying this preliminary-DFS configuration algorithm. The model shown in Figure 9 has a shape consisting of a total of two pre-DFS, MFS is one slot and one hole is extracted. When the surface propagation process for preliminary-DFS configuration is performed according to the above rules, when the surface defining the MFS is encountered during the propagation process, only the ID of the currently configured DFS is stored and propagation continues to the next surface.

Looking at the form of chaining the sign of the propagating surface to form a preliminary DFS, the chain of (-) continues from (-) sign and then the chain is changed to (+) once. The chain may continue with a positive sign, but the minus sign should not appear.

The preliminary-DFS constructed through such a process is a form in which the preliminary-DFS boundary is drilled as shown in the last figure of FIG. Therefore, in order to create a machining path for the generated DFS using external CAD software, the boundary portion must be blocked by a new face to form a complete solid. Upon completion of this partitioning operation, the preliminary-DFS is completed as DFS.

The following describes a four-stage partitioning process for generating DFS in the rapid start method according to the present invention. Spatial partitioning is the process of constructing the original model as a set of multiple DFSs based on the boundary between the preliminary DFSs created earlier. When partitioning, the outer edges appearing at the top of the preliminary DFS are created in a loop, and then the faces that fill the loop are created and the DFS is separated from the original model. It is important to note that when you perform the partitioning operation, the surface of the new shape is created at the DFS boundary, so once the creation of one DFS is completed, the lower shape of the DFS, which is created in the following order, is created from the original shape. It is taken from the bottom shape after separation. This series of work can be implemented using various modeling functions provided by the kernel since the rapid start method according to the present invention is based on a commercial solid modeling kernel (Parasolid from Unigraphics Solution, Inc.).

The following describes the partitioning and merging process of DFS in the four-step process for generating DFS in the rapid start method according to the present invention. 10 shows the partitioning process of DFS in the rapid start method according to the present invention.

If the maximum height of the DFS produced in the above process is thicker than the maximum thickness of the sheet material that can be supplied in the method according to the present invention, it is inevitable to repartition the DFS, in which case the operation of merging the repartitioned DFS is performed.

In the present invention, rather than cutting the DFS at the maximum height position of the supplyable plate, the DFS is divided at the position of the silhouette curve located just below the maximum height. This is to increase the efficiency of the overall process, to minimize the process of inverting the plate in the step of configuring the rapid start method according to the present invention.

As shown in Figure 10, the number of setups is reduced by dividing DFS in the silhouette curve.

This repartitioned DFS can be merged back into the DFS immediately above for two cases. In the first case, the DFS to be stacked immediately above is vertical when the signs that make up the truncated DFS are all (+). In the case of consisting of only the bottom of the upper DFS can be merged separately, the second case can be merged with any type of DFS of the upper part when the cut DFS is composed only of the vertical plane. This merging process is also intended to reduce the number of unit processes, thereby reducing the overall molding time.

Figure 11 shows the data structure of the DFS generated in the final step of the process of creating the DFS in the rapid start method according to the present invention.

In the present invention, the DFS has a meaning as a unit process in addition to the shape information. That is, one DFS includes one main processing cycle process consisting of a sheet back surface processing step, a sheet lamination step, and a sheet front surface processing step in the rapid start method according to the present invention. Therefore, in order to complete the configuration of the DFS, the process designer must designate the processing information related to the process corresponding to each DFS, in addition to the shape information of the DFS. This information is then used in subsequent process path generation and evaluation of the overall process.

As shown in Fig. 11, the node for the MFS in the data structure of the DFS is a data element for storing the processing order of the MFS. Since the MFS can be performed at the most efficient machining at any point in time, Information on the processing time of a particular MFS.

FIG. 12 shows the main machining cycle process for DFS and the sub machining process for MFS when the plate laminated rapid start method for performing lamination and cutting according to the present invention is applied to an engine cylinder block. When the plate-laminated rapid start method according to the present invention is applied to an engine cylinder block, a total of five DFSs are generated, and the MFS is composed of 43 holes, 15 slots, 4 pockets, and 3 finely processed surfaces.

As shown in Fig. 12, it can be seen that the basic unit of lamination has a layer of three-dimensional shape which is completely different from the conventional rapid start method. In addition, the shapes used in actual production sites have a very complex shape, so that a large number of DFSs may be generated without a sub-machining process in the rapid start method according to the present invention, which may be impossible to form.

As described above, in the sheet lamination rapid start method which performs lamination and cutting according to the present invention, the main processing cycle process consisting of the back plate processing step, the step of inverting and laminating the plate, the front plate processing step and the small Submachining processes for processing shapes, such as submachining processes consisting of drilling, milling or grinding, differing from conventional methods of dividing the entire shape into thin layers of constant thickness, The overall molding time can be significantly reduced.

FIG. 13 is a diagram for explaining the reduction in the number of DFSs required by the MFS concept in the rapid start method according to the present invention. Figure 13a shows that seven DFSs are required in the prior art without the introduction of the MFS concept, and Figure 13b shows the removal of the MFS of holes and slots from the model prior to disassembling the shape by the MFS concept in the method according to the present invention. You can see that two DFSs are finally created. Since the main process is based on DFS, the smaller the number of DFS, the less time is spent on the whole process.

In the present invention, in order to maximize the advantages of the cutting process performed in combination with lamination, by extracting the additional machining_feature_shape (MFS) in the process planning and managing them independently of the lamination_feature_shape (DFS) There is an advantage to increase the functionality and process efficiency of the product.

Claims (19)

In the roughing and finishing of the sheet back surface processing step (a), the sheet lamination step (b), the step (b) of applying the adhesive and laminating the plate by rotating the plate processed by the back side by the step (a) 180 degrees A sheet front surface processing step (c) for roughing, finishing and contour-contouring the front surface of the laminated sheet, wherein the back surface processing step (a), the sheet lamination step (b) and the front surface processing step (c) A method of laminating rapid start of a plate which performs a combination of lamination and cutting by repeatedly performing a main machining cycle process consisting of a sub machining process of drilling, milling or grinding. The method of claim 1, The main machining cycle process is performed on a laminated_feature_shape (DFS), which is a lamination unit, and the submachining process is performed on an additional_machining_feature_shape (MFS), which is a machining feature that is accessible by a tool. The plate laminated rapid start method for performing a combination of lamination and cutting, characterized in that to be carried out for. The method of claim 2, wherein the additional_processing_features_shape (MFS) Geometric inference step of analyzing all geometric shapes constituting a given object and selectively extracting a specific shape of a desired shape to suggest to the user; A user input step of selecting a specific shape desired by a user and inputting information; And A plate material for performing lamination and cutting, characterized in that extracted by the step of determining the machining possibility and building the machining information for the specific shape selected by the geometric inference step and the user input step based on the machining information database Stacked rapid start method. The method of claim 3, In the geometric inference step, the type of additional_processing_feature_shape (MFS) to be extracted is determined, and for each additional_processing_feature_shape (MFS), the additional_machining_feature_shape (MFS) is applied. It is implemented by creating a minimal hint condition and defining an additional machining_feature_shape (MFS) from the corresponding hint of the finally obtained additional machining-feature_shape (MFS). A plate lamination rapid start method which performs a combination of lamination and cutting, characterized in that. The method of claim 4, wherein The additional_machining_feature_shape (MFS) is a plate lamination rapid start of a combination of lamination and cutting, characterized in that the hole, which can be processed in the drilling process, the slot, pocket and micro-machined surface that can be processed in the milling process Way. The method of claim 5, The hole-adding_machining_feature_shape (MFS) hint is a wall laminated rapid start method that performs a combination of lamination and cutting, characterized in that the wall surface consisting of a curved surface. The method of claim 5, Slot addition_machining_features_Hints of shape (MFS) is a laminated sheet rapid start method that performs a combination of lamination and cutting, characterized in that a pair of opposing parallel wall surface. The method of claim 5, The hint of MFS is to combine lamination and cutting, characterized in that the bottom surface is the same as the cross-sectional shape and the wall surrounding the pocket is formed while sweeping in the vertical direction. Plate laminated rapid start method. The method of claim 3, Further_Machining_Features_Flat sheet lamination rapid start method for performing a combination of lamination and cutting, characterized in that it further includes the step of adjusting the machining time with the processability check when extracting the shape (MFS). The method of claim 3, The stacking_feature_shape (DFS) is obtained by removing the extracted additional_processing_feature_shape (MFS) from the model and decomposing the shape based on the shape information of the object. Plate lamination rapid start method performed. The method of claim 10, When removing the extracted additional machining feature (MFS) from the model, you do not actually remove it from the CAD model, but by attaching a logical dog tag to the faces defining the extracted additional machining feature (MFS). Addition_Machining_Feature_Features Laminating and cutting are performed by the feature that excludes the faces from the search during the feature creation (DFS) after the feature extraction (MFS) extraction process. Plate laminated rapid start method. The method of claim 11, The stacking_feature_shape (DFS) extraction is performed by a plane splitting process, a preliminary-DFS generating process, a space dividing process, and a splitting / merging process of the DFS. Sheet Lamination Rapid Start Method. The method of claim 12, In the plane dividing process, the lamination and cutting are performed in combination with each other. Sheet Lamination Rapid Start Method. The method of claim 12, In the preliminary-DFS generation process, when the Z coordinate component of the normal vector has the same sign in the plane divided in the plane division process, lamination and cutting are performed by grouping them together to form pre-DFS. Plate laminated rapid start method. The method of claim 12, The space partitioning process is a plate lamination type that performs a combination of lamination and cutting, characterized in that the original model is composed of a set of a plurality of DFS based on the boundary between the pre-DFS generated in the pre-DFS generation process Rapid start method. The method of claim 12, The splitting / merging process of the DFS is a plate lamination rapid start method for performing a combination of lamination and cutting, characterized in that to divide the DFS at the position of the silhouette curve located directly below the maximum height of the supplyable plate. The method of claim 13, The division / merge process of the DFS is that when the symbols of the planes constituting the divided DFS are all positive, when the DFS to be stacked on the top is composed of only the vertical plane, the bottom of the upper DFS is separated and merged. A plate lamination rapid start method which performs a combination of lamination and cutting, characterized in that. The method of claim 13, Wherein the split / merge process of the DFS, if the divided DFS is composed only of the vertical plane, the plate laminated rapid start method for performing a combination of the lamination and cutting, characterized in that combined with any form of the upper DFS. The method of claim 12, The data stack of the extracted stack_feature_shape (DFS) includes a data element for storing the machining sequence of the additional_machining_feature_shape (MFS). How to start eating fast.