JP4102057B2 - 3D product creation method and apparatus, 3D product processing model creation program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a three-dimensional product creation method and apparatus, and a three-dimensional product processing model creation program.
[0002]
[Prior art]
Creation of 3D products uses 3D CAD (Computer Aided Design) equipment to create 3D product processing models according to 3D product shapes using 3D CAD (Computer Aided Manufacturing) models. ) The data is transferred to an apparatus, and NC data is created from the 3D product machining model in this 3D CAM apparatus and transferred to the NC processing machine. This NC processing machine operates in accordance with NC data to cut a workpiece such as a plastic or metal block to cut out a three-dimensional product.
[0003]
A model for processing a 3D product created by operating a 3D CAD device includes a frame according to the shape of the 3D product and a plurality of supports for supporting the 3D product model in this frame. .
[0004]
Therefore, in the 3D CAD apparatus, a frame and a plurality of supports are created, and the 3D product model is created by merging the 3D product model with the frames and the plurality of supports.
[0005]
[Problems to be solved by the invention]
However, when creating a 3D product processing model by operating a 3D CAD device, knowledge and know-how specific to processing are necessary to determine how to create the shape of the 3D product processing model. is necessary. For this reason, it is difficult for the original designer to determine what the shape of the 3D product processing model should be.
[0006]
Since the operation of the 3D CAD apparatus becomes more difficult as the shape of the 3D product processing model becomes more complicated, it is necessary to be familiar with the operation of the 3D CAD apparatus.
[0007]
Also, in order to create a 3D product processing model in a short time, the creation of the 3D product processing model must be executed in a short time.
[0008]
On the other hand, in a 3D product creation method that cuts a 3D product by cutting a workpiece such as a plastic or metal block, the workpiece is elastically deformed or plastically deformed by a processing force applied to the workpiece. Is required to be reduced.
[0009]
However, in the above three-dimensional product creation method, it is possible to secure or improve the machining dimensional accuracy and the machining surface roughness by reducing the elastic deformation and plastic deformation of the workpiece, and the machining accuracy and the machining surface roughness. It is not considered to achieve both the processing quality such as high speed and the high processing speed.
[0010]
For this reason, considering the reduction of elastic deformation and plastic deformation of the workpiece, the machining method by combining the machining process and the tool trajectory that always keeps the thickness of the workpiece that supports the machining point to the maximum, and the three-dimensional product By combining the tool trajectory and the machining process, which always keeps the cross-sectional area of the work piece that supports the machining point of thin-walled structures such as ribs, and keeps the machining force moment acting on the base of the thin-walled structure to the minimum. The processing methods and the processing methods that make these processing methods compatible with high-speed processing are not formulated.
[0011]
Therefore, there is no CAM device for 3D product processing that can create CL data and NC data according to these methods, and the processing of 3D products requires skill and a long processing time.
[0012]
Accordingly, an object of the present invention is to provide a three-dimensional product creation method and apparatus capable of easily creating a three-dimensional product processing model in a short time without the skill of creating a three-dimensional product processing model.
[0014]
It is another object of the present invention to provide a 3D product machining model creation program for easily creating a 3D product machining model in a short time without the skill of creating a 3D product machining model. .
[0016]
[Means for Solving the Problems]
  The present invention has a three-dimensional product model according to the shape of a three-dimensional product and having one surface and the other surface at an angle of 180 ° opposite to the one surface. NC data of a 3D product processing model supported through multiple supports is created by computer processing, the NC processing machine is controlled according to the NC data, and the workpiece is processed to produce a 3D product. In the three-dimensional product creation method to be created, the data of the three-dimensional product model, the processing machine data of an NC processing machine that processes at least the thickness of the frame as attribute data, and the tool used for the NC processing machine 3D product model templates having at least a plurality of support dimensions and the number of support attributes and 3D product model templates are read. Calculating the external dimensions of the 3D product model from, for all surfaces in the three-dimensional product modelIs the average of several unit normal vectorsFind the average unit normal vector,thisSet the vector direction to the other side of the 3D product model, set the opposite side 180 ° to the other side, and set the frame thickness from the machine data. Set the dimensions and number of multiple supports from the template of the 3D product model, and set the external dimensions of the 3D product model, the other surface side and one surface side, the frame thickness, and the multiple support dimensions and number. A first step of setting initial value data having, a second step of determining a frame size from the external dimensions of the three-dimensional product model, the dimensions of a plurality of supports, and the frame thickness in the initial value data; A third step of arranging a plurality of support placement points for creating a plurality of supports on the data of the three-dimensional product model according to the number of the plurality of supports in the data; A plurality of support cross sections are created at a plurality of support placement points from the support dimensions and frame thicknesses of the support, and the support cross sections are extended to the data of the three-dimensional product model to create a plurality of support data. The first process data model data for processing the workpiece from the other side is created by merging the process, frame data, multiple support data, and 3D product model data. And a fifth step of creating data of a second machining data model for machining the workpiece from one surface side, and each data of the first and second machining data models Is a method for creating a three-dimensional product characterized in that NC data for controlling the operation of an NC machine is created.
[0017]
  The present invention has a three-dimensional product model according to the shape of a three-dimensional product and having one surface and the other surface at an angle of 180 ° opposite to the one surface. NC data of a 3D product processing model supported through multiple supports is created by computer processing, the NC processing machine is controlled according to the NC data, and the workpiece is processed to produce a 3D product. In the three-dimensional product creation method to be created, the data of the three-dimensional product model, the processing machine data of an NC processing machine that processes at least the thickness of the frame as attribute data, and the tool used for the NC processing machine 3D product model templates having at least a plurality of support dimensions and the number of support attributes and 3D product model templates are read. Calculating the external dimensions of the 3D product model from, for all surfaces in the three-dimensional product modelIs the average of several unit normal vectorsFind the average unit normal vector,thisThe vector direction is set to the other surface side with respect to the three-dimensional product model, the opposite side of the angle of 180 ° with respect to the other surface side is set to one surface side, the frame thickness is set from the processing machine data, 3 A plurality of support dimensions and the number are set from the template of the three-dimensional product model, and the outer dimensions of the three-dimensional product model, the other and one surface side, the frame thickness, and the plurality of support dimensions and the number are provided. A first step of setting initial value data, a second step of determining a frame size from the outer dimensions of the three-dimensional product model in the initial value data, a plurality of support dimensions, and a frame thickness; and initial value data A third step of arranging a plurality of support arrangement points for creating a plurality of supports on the data of the three-dimensional product model according to the number of the plurality of supports in the Create multiple support cross sections at multiple support placement points from multiple support dimensions and frame thicknesses, and create multiple support data by extending the support cross sections on the 3D product model data. Data of the first process data model for processing the workpiece from the other surface side by merging the fourth process, the frame data, the plurality of support data, and the three-dimensional product model data And a fifth step of creating data of a second machining data model for machining a workpiece from one surface side, and each data of the first and second machining data models A sixth process for creating NC data for controlling the operation of the NC machine and a line on the frame surface by connecting a plurality of supports, and the other surface side and one of the lines are created by this line. A seventh step of dividing the workpiece into the surface side, an eighth step of machining the workpiece according to the NC data of the other surface side of the model for machining the three-dimensional product among the NC data, and the three-dimensional product of the NC data. And a ninth step of processing a workpiece in accordance with NC data on one surface side of the processing model.
[0018]
  The present invention has a three-dimensional product model according to the shape of a three-dimensional product and having one surface and the other surface at an angle of 180 ° opposite to the one surface. NC data of a 3D product processing model supported through multiple supports is created by computer processing, the NC processing machine is controlled according to the NC data, and the workpiece is processed to produce a 3D product. In the three-dimensional product creation device to be created, the data of the three-dimensional product model, the processing data of the NC processing machine that processes at least the thickness of the frame as attribute data, and the tool used for the NC processing machine A database for storing the tool data and a template of a three-dimensional product model having attribute data consisting of at least a plurality of support dimensions and numbers; 3D product model data, machine data, tool data and templates are read from the 3D product model, and the 3D product model external dimensions are calculated from the 3D product model data. TheIs the average of several unit normal vectorsFind the average unit normal vector,thisSet the vector direction to the other side of the 3D product model, set the opposite side 180 ° to the other side, and set the frame thickness from the machine data. Set the dimensions and number of multiple supports from the template of the 3D product model, and set the external dimensions of the 3D product model, the other surface side and one surface side, the frame thickness, and the multiple support dimensions and number. Initial value data setting means for setting initial value data having, frame creation means for determining a frame size from the external dimensions of the three-dimensional product model in the initial value data, a plurality of support dimensions, and a frame thickness; and an initial value Support to place multiple support placement points to create multiple supports on 3D product model data according to the number of multiple supports in the data A plurality of support cross sections are created at a plurality of support arrangement points from the arrangement means, the support dimensions in the initial value data, and the frame thickness, and the support cross sections are extended to the data of the three-dimensional product model. Support creation means for creating data, first processing data for processing a workpiece from the other surface side by merging frame data, a plurality of support data, and 3D product model data A machining data model creating means for creating data of a second machining data model for creating a model data and machining a workpiece from one surface side; NC data for controlling the operation of the NC machine is created from each data of the first and second machining data models created by Is a three-dimensional product creation apparatus.
[0019]
  The present invention has a three-dimensional product model according to the shape of a three-dimensional product and having one surface and the other surface at an angle of 180 ° opposite to the one surface. NC data of a 3D product processing model supported through multiple supports is created by computer processing, the NC processing machine is controlled according to the NC data, and the workpiece is processed to produce a 3D product. In the three-dimensional product creation device to be created, the data of the three-dimensional product model, the processing data of the NC processing machine that processes at least the thickness of the frame as attribute data, and the tool used for the NC processing machine A database for storing the tool data and a template of a three-dimensional product model having attribute data consisting of at least a plurality of support dimensions and numbers; 3D product model data, machine data, tool data and templates are read from the 3D product model, and the 3D product model external dimensions are calculated from the 3D product model data. TheIs the average of several unit normal vectorsFind the average unit normal vector,thisThe vector direction is set to the other surface side with respect to the three-dimensional product model, the opposite side of the angle of 180 ° with respect to the other surface side is set to one surface side, the frame thickness is set from the processing machine data, 3 A plurality of support dimensions and the number are set from the template of the three-dimensional product model, and the outer dimensions of the three-dimensional product model, the other and one surface side, the frame thickness, and the plurality of support dimensions and the number are provided. Initial value data setting means for setting initial value data, frame creation means for determining the dimensions of the frame from the outer dimensions of the three-dimensional product model in the initial value data, the dimensions of the plurality of supports, and the thickness of the frame; and initial value data A support arrangement for arranging a plurality of support arrangement points for creating a plurality of supports on the data of the three-dimensional product model according to the number of the plurality of supports in A plurality of support cross sections are created at a plurality of support placement points from the means and the plurality of support dimensions and frame thicknesses in the initial value data, and the support cross sections are extended on the data of the three-dimensional product model to generate a plurality of Support creation means for creating support data, first processing for processing a workpiece from the other surface side by merging frame data, a plurality of support data, and 3D product model data Processing data model creating means for creating data for a second machining data model for machining a workpiece from one surface side, and first and second machining data models NC data creation means for creating NC data for controlling the NC machine operation from each data of the data model, and a frame surface by connecting multiple supports A line is created, and the workpiece is machined according to NC data on the other surface side of the three-dimensional product machining model among the NC data, and a division unit that divides the other surface side and one surface side by this line. 3D characterized by comprising: 1st machining control means; and 2nd machining control means for machining a workpiece in accordance with NC data on one surface side of a 3D product machining model among NC data. Product creation device.
[0020]
  The present invention has a three-dimensional product model according to the shape of a three-dimensional product and having one surface and the other surface at an angle of 180 ° opposite to the one surface. 3D product machining model NC data to be supported through multiple supports is created by computer processing, and the NC machine is controlled according to the NC data, and the workpiece is processed to produce the 3D product. A 3D product machining model creation program that can be read by a computer for creating a 3D product model data and at least a frame thickness as attribute data, and an NC processing machine for machining a workpiece Three-dimensional machine tool data, tool data for tools used in NC machines, and attribute data consisting of at least a plurality of support dimensions and numbers To read a template of goods model, to calculate the external dimensions of the 3D product model from the three-dimensional product model data, for all surfaces in the three-dimensional product modelIs the average of several unit normal vectorsFind the average unit normal vector,thisThe vector direction is set to the other side of the 3D product model, the opposite side of the other side is set to 180 ° and the other side is set to one side, and the frame thickness is set from the machine data. The dimensions and number of supports are set from the template of the 3D product model, the external dimensions of the 3D product model, the other surface side and one surface side, the frame thickness, the dimensions of the plurality of supports, and A step of setting initial value data having the number of frames, a step of determining a frame size from the external dimensions of the three-dimensional product model in the initial value data, a plurality of support dimensions, and a frame thickness, and a plurality of initial value data The step of arranging a plurality of support arrangement points for creating a plurality of supports on the data of the 3D product model according to the number of supports of In addition, a plurality of support cross sections are created at a plurality of support placement points from the support dimensions and the frame thickness in the initial value data, and the support cross sections are extended to the data of the three-dimensional product model to obtain a plurality of support data. The step of creating, merging the frame data, the plurality of support data, and the three-dimensional product model data, the first processing data model data for processing the workpiece from the other side Creating a second machining data model for machining the workpiece from one surface side, and NC from each data of the first and second machining data models A three-dimensional product machining model creation program characterized by creating NC data for controlling the operation of a processing machine.
[0021]
  The present invention has a three-dimensional product model according to the shape of a three-dimensional product and having one surface and the other surface at an angle of 180 ° opposite to the one surface. NC data of a 3D product processing model supported through multiple supports is created by computer processing, the NC processing machine is controlled according to the NC data, and the workpiece is processed to produce a 3D product. A 3D product processing model creation program readable by a computer to be created, having a 3D product model data and at least a frame thickness as attribute data, and an NC processing machine for processing a workpiece 3D product model having data, tool data of a tool used in an NC machine, and attribute data comprising at least a plurality of support dimensions and numbers To read a template, to calculate the external dimensions of the 3D product model from the three-dimensional product model data, for all surfaces in the three-dimensional product modelIs the average of several unit normal vectorsFind the average unit normal vector,thisThe direction of the vector is set to the other surface side with respect to the three-dimensional product model, the opposite side of the angle of 180 ° with respect to the other surface side is set to the one surface side, and the frame thickness is set from the processing machine data. A plurality of support dimensions and the number are set from the template of the three-dimensional product model, and the outer dimensions of the three-dimensional product model, the other and one surface side, the frame thickness, and the plurality of support dimensions and the number are provided. A step of setting initial value data, a step of determining a frame dimension from the external dimensions of the three-dimensional product model in the initial value data, a plurality of support dimensions, and a frame thickness; and the number of the plurality of supports in the initial value data Locating a plurality of support placement points for creating a plurality of supports on the data of the 3D product model according to A plurality of support cross-sections are created at a plurality of support placement points from a plurality of support dimensions and frame thicknesses in the data, and the support cross-sections are extended on the 3D product model data to obtain a plurality of support data. The step of creating, merging the frame data, the plurality of support data, and the three-dimensional product model data, the first processing data model data for processing the workpiece from the other side Creating a second machining data model for machining the workpiece from one side, and the NC machine from each of the first and second machining data models. A step of creating NC data for operation control and a line on the frame surface by connecting a plurality of supports, and the other line is created by this line. A step of dividing into a surface side and one surface side, a step of machining a workpiece according to the NC data of the other surface side of the 3D product machining model in the NC data, and a 3D product machining of the NC data And a step of processing a workpiece in accordance with NC data on one surface side of the model for manufacturing, a model creation program for processing a three-dimensional product.
[0037]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a case where a three-dimensional product is applied to a mock-up that is a product prototype will be described with reference to the drawings as an embodiment of the present invention.
[0038]
FIG. 1 is an overall configuration diagram of a mockup creation apparatus.
[0039]
The main control unit 1 calculates various data according to a mock-up machining model creation program. The main control unit 1 includes a storage device 2, a display 3 such as a liquid crystal display or a CRT, an operation input unit 4 such as a keyboard and a mouse, and a memory for reading data stored in a storage medium such as a flexible disk FD. A transmission unit 6 and an NC processing machine 7 that perform data transmission via a telephone line (Internet) or the like are connected between the medium reading unit 5 and an external device such as a three-dimensional CAD device.
[0040]
The storage device 2 includes a program memory 2a, a product model database 2b as a database device, a processing machine database 2c that stores the processing machine data shown in FIG. 2, and a tool database 2d that stores the tool data shown in FIG. A product template database 2e that stores the product template data shown in FIG. 4 is formed.
[0041]
The program memory 2a stores a mock-up machining model creation program. The mock-up processing model creation program is installed from the flexible disk FD via the storage medium reading unit 5 or received from the external device via the telephone line by the transmission unit 6 and installed from the transmission unit 6. .
[0042]
The product model database 2b stores various types of three-dimensional product model data.
[0043]
Processing machine data of the NC processing machine 7 is stored in the processing machine database 2c. As shown in FIG. 2, the processing machine data includes, as attribute data, the name and number of the processing machine, the name and number of the tool used for the processing machine, the diameter of the tool, the tool length, and the frame. It consists of a minimum frame thickness W ′ necessary for mounting on a processing machine.
[0044]
The frame 8 is formed in a quadrangular shape as shown in FIG. 5, for example, and has outer diameter dimensions X, Y, and Z on the XYZ axes. The frame 8 has a thickness W ′. The frame 8 supports, for example, a three-dimensional product model 9 which is a mockup as shown in FIGS. 6 and 7 through a plurality of supports 10 in the frame. 6 is a view of the three-dimensional product model 9 as viewed from one surface side (second processing direction side described later), and FIG. 7 is a diagram illustrating the three-dimensional product model 9 on the other surface side (first processing described later). It is the figure seen from the direction side.
[0045]
The tool data database 2d stores tool data related to tools used in the NC machine 7 or the like. As shown in FIG. 3, the tool data includes, as attribute data, a tool name and its number, a tool diameter, a tool length, and a frame gradient value θ. Of these, the name of the tool and its number coincide with the usable tool name and its number possessed by the processing machine data. The frame gradient value θ is the gradient angle of the gradient surface 11 added to the inner surface of the frame 8 as shown in FIG.
[0046]
The product template database 2e stores product templates related to various three-dimensional product models 9. As shown in FIG. 4, the product template includes a product name, support 10 dimensions, and the number N of supports 10 as attribute data. Of these, the dimensions of the support 10 include a width Ws, a height Ts, and a minimum length Ls as shown in FIG.
[0047]
  The main control unit 1 executes an mock-up machining model creation program stored in the database device 2, whereby an initial value data setting unit 12, a frame creation unit 13, a support placement unit 14, and a support creation unit 15, a machining data model creation unit 16, an NC data creation unit 17, a first machining control unit 18, and a second machining control unit 19.The main control unit 1 performs arithmetic processing on various data in accordance with a mock-up machining model creation program. Therefore, the initial value data setting unit 12, the frame creation unit 13, the support placement unit 14, and the support creation unit 15 are processed. The machining data model creation unit 16, the NC data creation unit 17, the first machining control unit 18, and the second machining control unit 19 also process various data.
[0048]
The initial value data setting unit 12 has a function of reading processing machine data, tool data, and a template stored in the database device 2 and setting a set of initial value data obtained by combining these data.
[0049]
The initial value data setting unit 12 reads the outer dimensions X of the read three-dimensional product model 9.₀, Y₀, Z₀, A function for setting reference coordinates in the three-dimensional product model 9, a function for setting a gradient value θ to be added to the frame 8, and dimensions of the support 10 (width Ws, height Ts, minimum length Ls) And a function of setting the number of supports 10 (the number of supports) N.
[0050]
For the setting of the reference coordinates, for example, the average vector of the average unit normal vector is set to + Z for all the surfaces on the three-dimensional product model 9, and this direction is set as the first processing direction. The second processing direction is opposite to the first processing direction.
[0051]
One processing direction (first processing direction) side is the three-dimensional product model 9 side shown in FIG. 7, and the other processing direction (second processing direction) side is the three-dimensional product model shown in FIG. 9 side.
[0052]
The frame creation unit 13 has an outer diameter X of the three-dimensional product model 9₀, Y₀, Z₀The minimum length Ls of the support 10 and the width W ′ of the frame 8 are read out from the initial value data set, and the following formulas (1) to (4) are calculated using the minimum length Ls and the width W ′ of the frame 8. And determining the dimensions X, Y, Z, and W of the frame 8 and creating the frame 8 having the dimensions X, Y, Z, and W as a single part of the frame 8 according to the reference coordinates.
[0053]
X = X₀+ 2 · Ls + 2 · W ′ (1)
Y = Y₀+ 2 · Ls + 2 · W ′ (2)
Z = Z₀+10 (3)
W = W ′ (4)
The support placement unit 14 has a function of placing each support position (support placement point) where a plurality of supports 10 should be created for the frame 8 based on the initial value data.
[0054]
The support placement unit 14 has a function of extracting parting lines in the three-dimensional product model 9 (for example, boundaries between surfaces having different angles) and placing the support 10 on the parting line.
[0055]
The support placement unit 14 has the function of the support placement check unit 14a.
[0056]
The support placement check unit 14a checks whether or not each support placement point is appropriate based on the cross-sectional area of the support 10 created at the support placement point. As a result of the check, the support placement point is inappropriate. If there is, it has a function of correcting or deleting the support placement point.
[0057]
The support creation unit 15 has a function of creating a cross section of the support 10 at each of a plurality of support placement points based on the initial value data set, and creating the support 10 by extending the support cross section to the three-dimensional product model 9. Specifically, the support creation unit 15 has functions of a projection unit 15a, a cross-section creation unit 15b, a trim unit 15c, an extrusion unit 15d, and a volume check unit 15e.
[0058]
The projection unit 15 a has a function of projecting the support arrangement point onto the side surface inside the frame 8.
[0059]
The cross-section creating unit 15b has a function of reading the dimensions X, Y, Z, W and the thickness W 'of the support 10 from the initial value data, and creating a support cross-section according to these dimensions and thickness.
[0060]
The trim portion 15 c has a function of trimming the support cross section according to the shape of the three-dimensional product model 9.
[0061]
The extruding portion 15 d has a function of extruding the support cross section to the inner surface of the three-dimensional product model 9 to create the support 10.
[0062]
The volume check unit 15e has a function of calculating the volume of the created support 10 and correcting the support placement point if the volume of the support 10 is smaller than the reference volume.
[0063]
The processing data model creation unit 16 merges the frame 8, the plurality of supports 10, and the three-dimensional product model 9, and performs processing from the first processing direction side on the three-dimensional product model 9 side shown in FIG. 7. The first machining data model is created, and a second machining data model for machining from the second machining direction side on the three-dimensional product model 9 side shown in FIG. 6 is created. Specifically, the machining data model creation unit 16 includes a dividing unit 16a, a first machining model creation unit 16b, and a second machining model creation unit 16c.
[0064]
The dividing portion 16a creates a line on the inner surface of the frame 8 by connecting the end points of the plurality of supports 10 by curves or straight lines, and the inner surface of the frame 8 is connected to the first machining direction side and the second machining by this line. It has the function of dividing into the direction side.
[0065]
The first machining model creation unit 16b merges the frame 8, the plurality of supports 10, and the three-dimensional product model 9 to create a first machining data model for machining from the first machining direction side. It has a function.
[0066]
The second machining model creation unit 16c has a function of creating a second machining data model for machining from the second machining direction side.
[0067]
The NC data creation unit 17 has a function of creating NC data for controlling the operation of the NC machine 7 based on the first and second machining data models.
[0068]
The first machining control unit 18 has a function of controlling the operation of the NC machine 7 according to the NC data of the concave shape on the first machining direction side shown in FIG. 7 in the mock-up machining model of the NC data.
[0069]
After the operation control of the first machining control unit 18 is finished, the second machining control unit 19 has a convex-shaped NC on the second machining direction side shown in FIG. 6 in the mock-up machining model of the NC data. It has a function of controlling the operation of the NC machine 7 according to the data.
[0070]
These first and second processing control units 18 and 19 control the position of the tool of the NC processing machine 7 along the tool trajectory according to the NC data, and process a workpiece made of a metal or plastic block. It has a function to make it.
[0071]
As shown in FIG. 10, the tool trajectory is used to create a mock-up shape (mock-up machining model) Q of the three-dimensional product model 9 in the machining area of the workpiece 20 made of a plastic or metal block. A plurality of layers 21-1 to 21-n are formed in a direction perpendicular to the axis direction (Z-axis), and these layers 21-1 to 21-n are sequentially processed along the axial direction of the tool one by one. It is a contour tool trajectory. The thickness ΔZ of one layer is set to 1 mm, for example.
[0072]
FIG. 11 is a diagram showing a contour tool trajectory in a certain plane H. FIG. In the figure, a contour line R generated by cutting the mockup shape Q at the surface H used for generating the layer and a normal direction F of the surface including the contour line R of the mockup shape Q are shown. Yes.
[0073]
The contour tool trajectory is processed into a shape Qf including a predetermined value offset with respect to the mockup shape Q as shown in FIG.
[0074]
The mock-up shape Q has a thin structure 22 such as a rib as shown in FIG. For the thin structure 22, the workpiece 20 is processed using a tool 23 having a radius larger than the height of the thin structure 21.
[0075]
As shown in FIGS. 13 (a) and 13 (b), the tool 23 has a shape in which the difference from the radius of the tool 23 that is actually used has a radius that is 0.5 times or more the height of the thin-walled structure 22. It is done.
[0076]
The reference shape 24 of the tool shown in FIGS. 12 and 13 (a) (b) has a radius sufficiently long with respect to the height of the thin structure 22, and the Z axis is a rotationally symmetric axis. It consists of the sum of a hemisphere having a plane in the Z + direction and a cylinder having a radius equal to this and having the Z axis as a rotational symmetry axis.
[0077]
13 (a) and 13 (b), na is a tool 23 so as to be in contact with the mock-up shape Q along the contour line R generated by cutting the desired mock-up shape Q by a plane perpendicular to the Z-axis. Is a trajectory generated by the tip of the hemispherical surface.
[0078]
nb is a locus obtained by offsetting the locus generated by the hemispherical tip point toward the normal direction of the surface constituting the mock-up shape Q at a certain interval, for example, 1 mm.
[0079]
The NC processing machine 7 performs processing at high speed, and is controlled in operation by a first processing control unit 18 and a second processing control unit 19.
[0080]
Next, the operation of the apparatus configured as described above will be described with reference to a flowchart for creating a mock-up machining model shown in FIGS.
[0081]
In the product model reading step (step # 1), the initial value data setting unit 12 reads the data of the three-dimensional product model 9 stored in the product model database 2b, and the external dimension X of the three-dimensional product model 9 is read from this data.₀, Y₀, Z₀Is calculated.
[0082]
  Next, in the product model reference coordinate setting step (step # 2), the initial value data setting unit 12 sets reference coordinates in the three-dimensional product model 9. For example, the reference coordinates are set for all surfaces in the three-dimensional product model 9.Multiple unit normal vectorsThe average vector is + Z, and this vector direction is the first machining direction side for the three-dimensional product model 9 as shown in FIG.
[0083]
At the same time, the initial value data setting unit 12 sets the direction opposite to the first processing direction (direction opposite to the angle of 180 °) as the second processing direction side with respect to the three-dimensional product model 9 as shown in FIG.
[0084]
Next, in the reference coordinate setting step (step # 3) of the product model, the initial value data setting unit 12 processes the NC machine 7 to be used shown in FIG. 2 from the machine database 2c stored in the database device 2. The machine data is selected and read, the tool attached to the NC processing machine 7 shown in FIG. 3 is selected from the tool database 2d, the tool data is read, and the product template database 2e is related to the three-dimensional product model 9 shown in FIG. A product template is selected and read, and a set of initial value data composed of these data is set.
[0085]
At this time, the tool name and its number that can be used by selecting the NC machine 7 and the minimum size required for mounting the NC machine 7 on the frame 8 (the thickness of the frame 8 shown in FIG. 5). Set W ′.
[0086]
By selecting the tool, the gradient value θ added to the frame 8 shown in FIGS. 8A and 8B is set.
[0087]
By selecting a product template for each product, the dimensions of the support 10 (width Ws, height Ts, minimum length Ls) and the number of supports 10 (number of supports) N are set.
[0088]
Next, in the frame creation process (step # 4), the frame creation unit 13 calculates the outer diameter X of the three-dimensional product model 9 calculated in step # 1.₀, Y₀, Z₀And the minimum length Ls of the support 10 and the width W ′ of the frame 8 are read out from the initial value data set created in step # 3 and the minimum length Ls, the width W ′ of the frame 8 and the above formulas (1) to ( 4) is calculated to determine the dimensions X, Y, Z, and W of the frame 8 shown in FIG.
[0089]
Next, the frame creation unit 13 creates the frame 8 having the dimensions X, Y, Z, and W as a single part of the frame 8 according to the reference coordinates set in step # 2.
[0090]
Next, in the parting line creation step (step # 5), the support placement unit 14 determines, for example, each surface of the three-dimensional product model 9 having different angles with respect to the reference coordinate + Z set in step # 2. As shown in FIG. 16, the boundary between the surface where the average normal vector of the surface of the three-dimensional product model 9 is 0 ≦ angle <90 ° and the surface where 90 ° ≦ angle <180 ° is defined as a parting line La. Extract. FIG. 16 shows a parting line La of a part of the three-dimensional product model 9.
[0091]
Next, in the support position arrangement step (step # 6), the support arrangement unit 14 reads the number N of supports 10 from the initial value data set created in step # 3, and the three-dimensional product according to the number N of supports 10 On the parting line La extracted on the model 9, N points TNa indicating support placement points for creating the support 10 are arranged at equal intervals as shown in FIG.
[0092]
Next, in the support placement point check process (step # 7), the support placement check unit 14a orthographically projects a unit vector parallel to the tangent to the parting line La at the point TNa and the unit vector onto the XY plane. An angle θa formed by the generated vector is calculated. The direction of the unit vector is arbitrary.
[0093]
When the angle θa at the support placement point TNa is, for example, θ ≧ 30 °, when a cross section passing through the support placement point TNa is created in the subsequent process, the area Sa of the cross section 10a of the support 10 is reduced as shown in FIG. In this figure, when the cross-sectional area Sa of the support 10 is obtained with respect to the point TNa of the arc portion in the three-dimensional product model 9, this cross-sectional area Sa is the area of the hatched portion Sb corresponding to the arc portion of the three-dimensional product model 9. It gets smaller by the minute.
[0094]
Accordingly, since the volume of the support 10 becomes small and the strength becomes insufficient, the support arrangement check unit 14a issues a warning for urging correction of the support arrangement point and displays this warning on the display 3 (step # 8).
[0095]
Next, when a warning for prompting support placement point correction is issued, in the support location correction step (step # 9), the support placement point TNa whose support placement point correction is prompted is moved or deleted. Done.
[0096]
Next, in the step of projecting to the frame side surface (step # 10), the projection unit 15a of the support creating unit 15 places the parting line La and the support arrangement point TNa on the side surface inside the frame 8 as shown in FIG. Orthographic projection is performed, and the parting line La and the support arrangement point TNa are created on the inner surface of the frame. The line created at this time is defined as a line Lb, and the support arrangement point TNa is defined as TNb.
[0097]
The normal projection means that the support arrangement point TNa and the parting line La are vertically irradiated with parallel rays, and the shadow is projected on a plane to create the point TNb and the line Lb.
[0098]
The projection direction is the inner product of the unit vector in the projection direction and the unit normal vector at the support placement point TNa among the four directions of the X axis + direction, the X axis− direction, the Y axis + direction, and the Y axis− direction. Select the direction where becomes the largest.
[0099]
Next, in the support cross-section creating step (step # 11), the cross-section creating section 15b reads the dimensions X, Y, Z, W and the thickness W ′ of the support 10 from the initial value data set, and these dimensions X, Y, Z , W and thickness W ′, the support cross section 10a passing through the point TNb is created.
[0100]
At this time, as shown in FIG. 18, the distance l between the end of the support cross section 10a on the second processing direction side and the point TNb is set so that l> 0, for example, 1 mm.
[0101]
As shown in FIG. 19, the trim portion 15c trims the support cross section 10a according to the shape of the three-dimensional product model 9 with the first processing direction side seen from the line Lb. This prevents the support 10 from biting into the three-dimensional product model 9 and affecting the shape of the three-dimensional product model 9.
[0102]
Here, when the distance l shown in FIG. 18 is l> 0, and the angle θa at the support placement point TNa calculated in step # 7 is θ> 0, the second cross-section direction side of the support cross section 10a. As a result, the entire edge of the support member 10 interferes with the three-dimensional product model 9, and even after trimming, the gap between the edge of the support cross section 10 a on the second machining direction side and the three-dimensional product model 9 can be eliminated. . That is, the contact area between the support 10 and the three-dimensional product model 9 can be increased, and the strength of the support 10 can be increased.
[0103]
As shown in FIG. 20, when the edge on the second machining direction side of the support section 10a is on the point TNb and the angle θa> 0, the edge on the second machining direction side of the support section 10a A gap G is generated between the three-dimensional product model 9.
[0104]
Next, in the support creation step (step # 12), the extruding portion 15d moves the support cross section 10 on the side surface of the frame 8 created in step 11 to the inner side surface 9a of the three-dimensional product model 9 as shown in FIG. Extrude and create a support 10.
[0105]
The support 10 is created using a solidification method called boundary representation (B-Reps). In the boundary expression, this movement is regarded as a kind of rotation when it goes around the edge of the support cross section 10a, and it is defined that there is a substantial part in the direction in which the right screw advances by the rotation. Here, this operation is expressed as extruding the support cross section 10a, and the direction in which the right screw advances is expressed as the extruding direction.
[0106]
At this time, one support 10 is created as a single part.
[0107]
As described above, the support 10 is formed by extruding up to the inner surface 9a of the three-dimensional product model 9, so that the joining area between the three-dimensional product model 9 and the support 10 can be increased, and the strength can be secured to a predetermined value or more.
[0108]
Since the support cross section 10a is not created on the parting line La but on the side surface of the frame 8, the pushing direction of the support 10 can be unidirectional, and the number of times of calculating the pushing distance can be reduced. In the conventional method, it is necessary to calculate the distance from the parting line La to the frame 8 and the distance in two directions from the parting line La to the inner surface 9a of the three-dimensional product model 9.
[0109]
When the support cross-section 10a passing through the support placement point TNa is created on the outer surface of the three-dimensional product model 9, the surface of the three-dimensional product model 9 is usually a large number of curved surfaces and a gradient is added. Even if the cross-sectional shape is created on the outer surface of the three-dimensional product model 9, it is difficult to grasp and correct.
[0110]
On the other hand, since the inner surface of the frame 8 is a flat surface and a slope surface, it is easy to grasp the cross-sectional shape of the support 10 and to easily correct the cross-section.
[0111]
Therefore, in this apparatus, since the support cross section 10a is created on the side surface of the frame 8, the procedure for creating the support cross section 10a can be reduced, and the calculation time can be shortened.
[0112]
Next, in the support volume check process (step # 13), the volume check unit 15e calculates the volume V of the support 10 created by using the volume calculation function of the three-dimensional CAD apparatus, Reference volume V₀And compare.
[0113]
As a result of this comparison, the volume V of the support 10 and the reference volume V₀For example, V ≦ 0.5V₀In this case, it is determined that the volume of the support 10 is small. If the volume of the support 10 is small, the strength of the support 10 is insufficient. Therefore, the volume check unit 15e issues a warning for prompting correction of the support placement point TNa and displays this on the display 3.
[0114]
Thereby, it returns to a support position correction process (step # 9) as needed, and support arrangement | positioning point TNa is corrected.
[0115]
Next, in the frame inner side surface dividing step (step # 14), the dividing unit 16a of the processing data model creating unit 16 is a straight line or a smooth curve between the end points of the support 10 whose Z direction is close to the parting line La. As shown in FIG. 22, a line Lc parallel to the XY plane from the end point to the end of the inner surface of the frame 8 is created. The dividing portion 16a divides the inner side surface of the frame 8 into a first processing direction side and a second processing direction side by the line Lc.
[0116]
Next, in the frame gradient adding step (step # 15), the machining data model creation unit 16 creates the first machining direction side surface inside the frame divided in step # 14 in step # 3. The gradient value θ shown in FIGS. 8A and 8B is read from the initial value data set, and a gradient is added in a direction opposite to the three-dimensional product model 9 according to the gradient value θ.
[0117]
Next, in the shape data model (MODEL2) creation step (step # 16), the second machining model creation unit 16c merges the three-dimensional product model 9, the frame 8, and the plurality of supports 10 into one part. A second machining data model (MODEL2) for machining from the second machining direction side as shown in FIG. 6 is created.
[0118]
Next, in the model copying step (step # 17), the machining data model creation unit 16 copies the second machining data model (MODEL2) created in step # 16 and uses this as the first machining data model. The basic model (MODEL1 ') of the machining model for machining from the direction.
[0119]
Next, in the hole closing step (step # 18), the machining data model creation unit 16 creates holes such as horizontal holes and screw holes with respect to the basic model (MODEL1 ′) of the machining model created in step # 17. Cover the area with a surface.
[0120]
Next, in the surface creation step (step # 19), the machining data model creation unit 16 performs the support 10 and the first machining direction side with respect to the basic model (MODEL1 ′) of the machining model as shown in FIG. A surface Sf (shaded portion) is stretched between the edge of the three-dimensional product model 9 and the line Lc in contact therewith.
[0121]
Next, in the surface deletion process (step # 20), the machining data model creation unit 16 performs the surface of the 3D product model portion with respect to the basic model (MODEL1 ′) of the machining model copied in step # 17. Of these, all the surfaces on the second machining direction side are deleted from the party line La.
[0122]
The processing data model creation unit 16 also deletes all surfaces on the second processing direction side from the surfaces in contact with the parting line La in the support 10 portion.
[0123]
The processing data model creation unit 16 also deletes all the surfaces on the second processing direction side of the frame 8 from the inner surface of the frame 8 with respect to the line Lc.
[0124]
In the bottom surface creation step (step # 21), the machining data model creation unit 16 is on the second machining direction side with respect to the basic model (MODEL1 ′) of the machining model on which the surface has been processed in step # 20. Cover the frame opening with a surface.
[0125]
Next, in the shape data model (MODEL1) creation step (step # 22), the first machining model creation unit 16b performs the basic model (the machining model in which the frame opening is closed by the surface in step # 21). For MODEL1 '), all the surfaces Sf are connected to create one part, and the first machining data model (MODEL1) for machining from the first machining direction side as shown in Fig. 24 is created. To do. FIG. 25 shows the bottom surface of the first machining data model (MODEL1).
[0126]
Next, in the IGES (initial graphics exchange specification) data writing process (step # 23), the machining data model creation unit 16 and the second machining data model (MODEL2) created in step # 16 and step # 22. The data in the format of IGES with the first machining data model (MODEL1) created in step 1 is written out.
[0127]
As described above, a mock-up machining model can be easily created in a short time without the skill of creating a mock-up machining model.
[0128]
Next, the NC data creation unit 17 reads data in the IGES format of the second machining data model (MODEL2) and the first machining data model (MODEL1), and operates the NC machine 7 from this data. NC data to be controlled is created and transferred to the NC machine 7.
[0129]
Next, a workpiece 20 made of a plastic or metal block is set on the NC processing machine 7. The NC processing machine 7 processes the workpiece 20 according to the processing procedure shown in FIG.
[0130]
First, processing on the first processing direction side (concave side) is performed. That is, the first machining control unit 18 controls the operation of the NC machine 7 according to the NC data of the first machining data model (MODEL1, concave side) shown in FIG. 7 in the mock-up machining model of the NC data. .
[0131]
This NC processing machine 7 processes the workpiece 20 by controlling the position of the tool in the XY plane direction and the Z-axis direction along the tool trajectory according to the NC data.
[0132]
The movement trajectory of the tool at this time is a contour tool trajectory for creating the first machining data model (MODEL1) as shown in FIG. That is, the contour tool trajectory forms a plurality of layers 21-1 to 21-n in the machining area of the workpiece 20 in a direction perpendicular to the axis (Z-axis) direction of the tool. 21-n is a trajectory for machining one layer at a time along the axial direction of the tool.
[0133]
The NC processing machine 7 processes one layer at a time from the + Z axis to the Z-direction, that is, from the layer 21-1 to the layer 21-n among the plurality of layers 21-1 to 21-n. When the above processing is completed, the workpiece 20 is processed by sequentially repeating the procedure for processing the next layer. The thickness ΔZ of one layer is set to 1 mm, for example.
[0134]
Further, as shown above, the contour line R generated by cutting the mop-up shape Q on the surface H used for generating the layer, as shown in the contour tool trajectory in a certain plane H in FIG. 11, and the mop A normal direction F of the surface including the contour line R of the up shape Q is shown.
[0135]
The contour tool trajectory is processed into a shape Qf including a predetermined value offset with respect to the mockup shape Q as shown in FIG.
[0136]
On the other hand, the mock-up shape Q has a thin structure 22 such as a rib as shown in FIG. In order to process the thin structure 22, the workpiece 20 is processed by setting a tool 23 having a radius larger than the height of the thin structure 21 on the NC processing machine 7.
[0137]
As shown in FIGS. 13 (a) and 13 (b), the tool 23 has a shape in which the difference from the radius of the tool 23 that is actually used has a radius that is 0.5 times or more the height of the thin-walled structure 22. It is done.
[0138]
The trajectory of the tool 23 at this time has a radius sufficiently long with respect to the height of the thin structure 22 as shown in FIG. 12, for example, a radius of 0.5 times or more of the height, and the Z axis A reference shape 24 consisting of a sum of a hemisphere having a plane in the Z + direction with a rotational symmetry axis and a cylinder having the same radius and the Z axis as a rotational symmetry axis, for example, the shape of a ball end mill is changed to a mock-up shape Q On the other hand, when the translational movement is made so as to contact at a certain interpolation interval, the surface generated by the locus of the hemispherical tip point, that is, the mock-up shape Q is offset by using the reference shape 24.
[0139]
FIG. 27 shows the relationship between the height H of the thin-walled structure 22, the radius r of the tool 23, and the radius R of the reference shape 24.
0.5H <R−r (5)
Holds.
[0140]
Accordingly, the NC processing machine 7 moves the tool 23 according to the trajectories na and nb shown in FIGS. 13A and 13B and processes the workpiece 20. In other words, the NC machine 7 has the tool 23 in contact with the mock-up shape Q along the contour R generated by cutting the desired mock-up shape Q along a plane perpendicular to the Z-axis. Is moved along the locus na generated by the hemispherical tip.
[0141]
The NC processing machine 7 moves the tool 23 along the locus nb obtained by offsetting the locus generated by the hemispherical tip point toward the normal direction of the surface forming the mock-up shape Q at a certain interval, for example, 1 mm. Move.
[0142]
As a result, as shown in FIG. 28, the offset portion 25 corresponding to 0.5H is created for the thin-walled structure 22 as shown in the above formula (5), and thereafter the offset portion 25 is offset using the tool 23 having the radius r. The thin structure 22 can be processed by processing the portion 25.
[0143]
When the machining on the first machining direction side is completed, the workpiece 20 is set in the NC machine 7 with the machining direction to the workpiece 20 reversed as shown in FIG.
[0144]
Next, processing on the second processing direction side (convex side) is performed. That is, the second machining control unit 19 controls the operation of the NC machine 7 according to the NC data of the second machining data model (MODEL2, convex side) shown in FIG. 6 in the mock-up machining model of the NC data. .
[0145]
This NC processing machine 7 processes the workpiece 20 by controlling the position of the tool in the XY plane direction and the Z-axis direction along the tool trajectory according to the NC data. The tool movement trajectory at this time is a contour tool trajectory for creating the second machining data model (MODEL2), as shown in FIG.
[0146]
When the processing on the second processing direction side is completed, the mock-up shape Q of the three-dimensional product model 9 is supported by the plurality of supports 10 inside the frame 8.
[0147]
In the next step, these supports 10 are cut and the mock-up shape Q is cut off from the frame 8. As a result, a mockup shape Q is obtained.
[0148]
As described above, according to the above-described embodiment, the machine data, tool data, and the product template of the 3D product model 9 related to the 3D product model 9 are read to set a set of initial value data. A frame 8 is created based on the set of data, and each support position where a plurality of supports 10 are to be created is arranged with respect to the frame 8, and a cross section of the support 10 is created at each of these support arrangement points. Is extended to the 3D product model to create the support 10, and the frame 8, the plurality of supports 8 and the 3D product model 9 are merged to create the first and second machining data models. A model for mock-up machining can be easily created in a short time even without the skill to create a model for the machine.
[0149]
When the mock-up processing model is created, if the volume of the support 10 is small, the strength is insufficient. Therefore, a warning for urging the support arrangement point can be issued, and the support arrangement point can be moved or deleted.
[0150]
The entire edge of the support cross section 10a interferes with the three-dimensional product model 9, and the gap between the edge of the support cross section 10a and the three-dimensional product model 9 can be eliminated. The strength of the support 10 can be increased by increasing the contact area with 9.
[0151]
Since the support cross section 10a is created on the side surface of the frame 8, the procedure for creating the support cross section 10a can be reduced and the calculation time can be shortened.
[0152]
Since the volume V of the support 10 is checked, the volume V of the support 10 is the reference volume V.₀If it is small, the strength of the support 10 is insufficient, so that it is possible to correct the support arrangement point TNa by issuing a warning for urging the correction of the support arrangement point TNa.
[0153]
Further, according to the above-described embodiment, the workpiece 20 is machined according to the concave shape NC data of the mock-up machining model NC data, the workpiece 20 is inverted, and then the convex shape Since the workpiece 20 is machined according to the NC data, and after these steps, the mock-up machining model Q is separated by cutting the plurality of supports 10 supporting the mock-up machining model Q with respect to the frame 8. Elastic deformation and plastic deformation of the workpiece 20 made of a plastic or metal block can be reduced, and both processing quality such as processing accuracy and processing surface roughness and a high processing speed can be achieved.
[0154]
In particular, a plurality of layers 21-1 to 21-n are formed in a machining area of the workpiece 20 in a direction perpendicular to the axial direction of the tool 23, and these layers 21-1 to 21-n are sequentially formed one by one. A thin-walled structure having a shape including a predetermined value offset with respect to the mock-up machining model Q by moving the tool 23 along the contour tool trajectory machined along the axial direction of the machine 23 to machine the workpiece 20 For the object 22, the workpiece 20 is processed using the reference shape 24 having a radius R that is 0.5 times or more larger than the height H of the thin-walled structure 22, so that the processing to the thin-walled structure 22 is performed. Elastic deformation and plastic deformation of the thin-walled structure 22 due to the internal processing force can be reduced, and required processing dimensional accuracy and processing surface roughness can be ensured.
[0155]
If the processing method of the mock-up processing model Q is standardized, a three-dimensional CAM device capable of generating CL data and NC data necessary for the processing can be developed.
[0156]
Note that the present invention is not limited to the above-described embodiment, and can be variously modified without departing from the scope of the invention in the implementation stage.
[0157]
Furthermore, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent requirements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and is described in the column of the effect of the invention. If the effect is obtained, a configuration from which this configuration requirement is deleted can be extracted as an invention.
[0158]
For example, in addition to processing machine data, tool data, and product template data, it is possible to automate the creation of NC data for mop-up processing by having processing information having processing conditions. By executing this process in the mock-up three-dimensional data creation program, the mopp-up processing model is completed, and at the same time, NC data is created, thereby reducing man-hours and working time.
[0159]
【The invention's effect】
As described above in detail, according to the present invention, there is provided a 3D product creation method and apparatus capable of easily creating a 3D product processing model in a short time without the skill of creating a 3D product processing model. it can.
[0161]
Further, according to the present invention, it is possible to provide a three-dimensional product processing model creation program for easily creating a three-dimensional product processing model in a short time without the skill of creating a three-dimensional product processing model.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram showing an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 2 is a schematic diagram of processing machine data in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 3 is a schematic diagram of tool data in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 4 is a schematic diagram of a product template in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 5 is a diagram showing the dimensions of a frame in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 6 is a diagram of a three-dimensional product model supported by a frame in an embodiment of a three-dimensional product creation apparatus according to the present invention as viewed from one surface side.
FIG. 7 is a view of a three-dimensional product model supported by a frame in an embodiment of a three-dimensional product creation apparatus according to the present invention when viewed from the other surface side.
FIG. 8 is a diagram showing frame gradient values in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 9 is a diagram showing the dimensions of a support in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 10 is a diagram showing a contour tool trajectory of a tool in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 11 is a diagram showing contour tool traces in one plane in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 12 is a diagram showing an offset shape of a three-dimensional product shape in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 13 is a diagram showing a tool trajectory for a thin-walled structure in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 14 is a flowchart for creating a model for processing a three-dimensional product in an embodiment of the three-dimensional product creating apparatus according to the present invention.
FIG. 15 is a flowchart of creating a model for processing a three-dimensional product in an embodiment of the three-dimensional product creating apparatus according to the present invention.
FIG. 16 is a diagram showing extraction of a parting line in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 17 is a diagram showing a support arrangement check based on a cross-sectional area of support in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 18 is a diagram showing an orthographic projection of a parting line and a support arrangement point in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 19 is a view showing a cross section of the support after trimming in the embodiment of the three-dimensional product creating apparatus according to the present invention.
FIG. 20 is a diagram showing a case where a gap is generated between a support cross section and a three-dimensional product model in an embodiment of the three-dimensional product creation apparatus according to the present invention.
FIG. 21 is a diagram showing support creation in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 22 is a diagram showing a division between the first machining direction side and the second machining direction side in the embodiment of the three-dimensional product creation apparatus according to the present invention.
FIG. 23 is a schematic diagram of a second processing data model (MODEL2) in an embodiment of the three-dimensional product creation apparatus according to the present invention.
FIG. 24 is a schematic diagram of a second processing data model (MODEL1) in an embodiment of a three-dimensional product creation apparatus according to the present invention.
FIG. 25 is a schematic diagram of the bottom surface of the second processing data model (MODEL1) in the embodiment of the three-dimensional product creation apparatus according to the present invention.
FIG. 26 is a diagram showing a processing procedure in the NC processing machine in the embodiment of the three-dimensional product creation apparatus according to the present invention.
FIG. 27 is a view showing the relationship among the height of the thin-walled structure, the radius of the tool, and the radius of the reference shape in the embodiment of the three-dimensional product creation apparatus according to the present invention.
FIG. 28 is a diagram showing an offset portion to a thin-walled structure in an embodiment of a three-dimensional product creation apparatus according to the present invention.
[Explanation of symbols]
1: Main control unit
2: Storage device
2a: Program memory
2b: Product model database
2c: Processing machine database
2d: Tool data database
2e: Product template database
3: Display
4: Operation input section
5: Storage medium reading unit
6: Transmission unit
7: NC processing machine
8: Frame
9: 3D product model
10: Support
11: Gradient surface
12: Initial value data setting section
13: Frame creation section
14: Support placement section
15: Support creation department
15a: Projection unit
15b: Section creation section
15c: Trim part
15d: Extruding part
15e: Volume check part
16: Data model creation unit for machining
16a: Dividing part
16b: First machining model creation unit
16c: Second machining model creation unit
17: NC data creation part
18: 1st process control part
19: Second machining control unit
20: Work piece
21-1 to 21-n: a plurality of layers
22: Thin structure
23: Tool
24: Reference shape
25: Offset part
Q: Mop-up shape (3D product shape)

Claims (15)

A three-dimensional product model having a three-dimensional product model according to the shape of the three-dimensional product and having one surface and the other surface opposite to the one surface by an angle of 180 ° is provided. NC data of a 3D product processing model supported through the support of the computer is created by computer calculation processing, the NC machine is controlled according to the NC data, and the workpiece is processed to create the 3D product In the 3D product creation method
Data of the three-dimensional product model, processing data of the NC processing machine that has at least the thickness of the frame as attribute data, and processes the workpiece, tool data of a tool used for the NC processing machine, Reading a template of the three-dimensional product model having attribute data comprising at least the dimensions and the number of the plurality of supports, calculating an external dimension of the three-dimensional product model from the data of the three-dimensional product model, obtains an average average unit normal vector is a multiple of the unit normal vector with respect to all the surfaces in the product model, it sets the direction of this vector to the other surface side with respect to the three-dimensional product model, of the other The opposite side of the angle of 180 ° with respect to the direction of the surface side is set to the one surface side, and the frame data is And setting the dimensions and the number of the plurality of supports from the template of the three-dimensional product model, the outer dimensions of the three-dimensional product model, the other surface side, the one surface side, and the frame. A first step of setting initial value data having a thickness and dimensions and number of the plurality of supports;
A second step of determining the dimensions of the frame from the outer dimensions of the three-dimensional product model in the initial value data, the dimensions of the plurality of supports, and the thickness of the frame;
A third step of arranging a plurality of support arrangement points for creating the plurality of supports on the data of the three-dimensional product model according to the number of the plurality of supports in the initial value data;
A plurality of cross sections of the plurality of supports are created at the plurality of support arrangement points from the dimensions of the support and the thickness of the frame in the initial value data, and the support cross sections are extended to the data of the three-dimensional product model. A fourth step of creating support data for
Data of the first processing data model for processing the workpiece from the other surface side by merging the frame data, the plurality of support data, and the three-dimensional product model data. A fifth step of creating and creating data of a second machining data model for machining the workpiece from the one surface side;
Have
Creating the NC data for controlling the operation of the NC machine from each data of the first and second machining data models;
A method for producing a three-dimensional product characterized by the above. A three-dimensional product model having a three-dimensional product model according to the shape of the three-dimensional product and having one surface and the other surface opposite to the one surface by an angle of 180 ° is provided. NC data of a 3D product processing model supported through the support of the computer is created by computer calculation processing, the NC machine is controlled according to the NC data, and the workpiece is processed to create the 3D product In the 3D product creation method
Data of the three-dimensional product model, processing data of the NC processing machine that has at least the thickness of the frame as attribute data, and processes the workpiece, tool data of a tool used for the NC processing machine, Reading a template of the three-dimensional product model having attribute data comprising at least the dimensions and the number of the plurality of supports, calculating an external dimension of the three-dimensional product model from the data of the three-dimensional product model, obtains an average average unit normal vector is a multiple of the unit normal vector with respect to all the surfaces in the product model, it sets the direction of this vector to the other surface side with respect to the three-dimensional product model, of the other The opposite side of the angle 180 ° with respect to the surface side is set to the one surface side, and the thickness of the frame is determined from the processing machine data. And setting the dimensions and number of the plurality of supports from the template of the three-dimensional product model, the outer dimensions of the three-dimensional product model, the other and one surface side, the thickness of the frame, A first step of setting initial value data having dimensions and number of the plurality of supports;
A second step of determining the dimensions of the frame from the outer dimensions of the three-dimensional product model in the initial value data, the dimensions of the plurality of supports, and the thickness of the frame;
A third step of arranging a plurality of support arrangement points for creating the plurality of supports on the data of the three-dimensional product model according to the number of the plurality of supports in the initial value data;
A plurality of cross sections of the plurality of supports are created at the plurality of support arrangement points from the dimensions of the plurality of supports and the thickness of the frame in the initial value data, and these support cross sections are extended on the data of the three-dimensional product model. A fourth step of creating the plurality of support data;
Data of the first processing data model for processing the workpiece from the other surface side by merging the frame data, the plurality of support data, and the three-dimensional product model data. A fifth step of creating and creating data of a second machining data model for machining the workpiece from the one surface side;
A sixth step of creating the NC data for controlling the operation of the NC machine from the data of the first and second machining data models;
A seventh step of connecting the plurality of supports to form a line on the frame surface and dividing the line into the other surface side and the one surface side by the line;
An eighth step of machining the workpiece in accordance with the NC data on the other surface side of the three-dimensional product machining model of the NC data;
A ninth step of machining the workpiece according to the NC data on the one surface side of the three-dimensional product machining model of the NC data;
A method for producing a three-dimensional product, comprising: In the three-dimensional product model, two surfaces are formed in which the angles of the average normal vectors of the surfaces of the three-dimensional product model are different from each other and form a boundary adjacent to each other.
The arrangement of the plurality of support arrangement points is obtained by extracting the boundary of the two surfaces having different angles of the average normal vector with respect to the two surfaces of the three-dimensional product model as a parting line, 3. The three-dimensional product creation method according to claim 1, wherein each of the support placement points for creating the support is placed on the parting line according to the number of the supports in the data. The fourth step is a step of orthographicly projecting each support arrangement point on the inner side surface of the frame;
Reading the dimensions of the support and the thickness of the frame from the initial value data, and creating the support cross section from these dimensions and thickness;
Trimming the support cross section to match the shape of the 3D product model;
Extruding the support cross section to the inner surface of the three-dimensional product model to create the support;
3D product creation method according to claim 1 or 2 characterized in that it consists of. In the fifth step, a line is created on the frame surface by connecting the supports, and the line is divided into the other surface side and the one surface side by this line;
Merging the frame, each support and the three-dimensional product model to create the first processing data model for processing from the other surface side;
Creating the second processing data model for processing from the one surface side;
3D product creation method according to claim 1 or 2, comprising a. The tool trajectory when machining the workpiece is such that a plurality of layers are formed in the machining area of the workpiece in a direction perpendicular to the axial direction of the tool, and these layers are sequentially layered one by one in the axial direction of the tool. The three-dimensional product creation method according to claim 2 , wherein the tool is a contour tool trajectory processed along the line . The three-dimensional product creation method according to claim 6 , wherein the contour tool trajectory is processed into a shape including an offset having a predetermined value with respect to the three-dimensional product processing model . A three-dimensional product model having a three-dimensional product model according to the shape of the three-dimensional product and having one surface and the other surface opposite to the one surface by an angle of 180 ° is provided. NC data of a 3D product processing model supported through the support of the computer is created by computer calculation processing, the NC machine is controlled according to the NC data, and the workpiece is processed to create the 3D product In the 3D product creation device
Data of the three-dimensional product model, processing data of the NC processing machine that has at least the thickness of the frame as attribute data, and processes the workpiece, tool data of a tool used for the NC processing machine, A database for storing a template of the three-dimensional product model having attribute data comprising at least the dimensions and number of the plurality of supports;
The 3D product model data, the processing machine data, the tool data, and the template are read from the database, the external dimensions of the 3D product model are calculated from the 3D product model data, and the 3D An average unit normal vector, which is an average of a plurality of unit normal vectors, is obtained for all surfaces in the product model, and the direction of the vector is set on the other surface side with respect to the three-dimensional product model. The opposite side of the angle of 180 ° with respect to the direction of the surface side is set to the one surface side, the thickness of the frame is set from the processing machine data, and the plurality of supports from the template of the three-dimensional product model Set the size and number, the outer dimensions of the three-dimensional product model, the other surface side, the one surface side and the thickness of the frame And initial value data setting means for setting an initial value data having a size and number of the plurality of support and,
Frame creation means for determining the frame dimensions from the outer dimensions of the three-dimensional product model in the initial value data, the dimensions of the plurality of supports, and the thickness of the frame;
Support arrangement means for arranging a plurality of support arrangement points for creating the plurality of supports on the data of the three-dimensional product model according to the number of the plurality of supports in the initial value data;
A plurality of cross sections of the plurality of supports are created at the plurality of support arrangement points from the dimensions of the support and the thickness of the frame in the initial value data, and the support cross sections are extended to the data of the three-dimensional product model. Support creation means to create support data for,
Data of the first processing data model for processing the workpiece from the other surface side by merging the frame data, the plurality of support data, and the three-dimensional product model data. A processing data model creating means for creating and creating data of the second processing data model for processing the workpiece from the one surface side;
Comprising
Creating the NC data for controlling the operation of the NC processing machine from each data of the first and second machining data models created by the machining data model creating means;
A three-dimensional product creation apparatus characterized by this. A three-dimensional product model having a three-dimensional product model according to the shape of the three-dimensional product and having one surface and the other surface opposite to the one surface by an angle of 180 ° is provided. NC data of a 3D product processing model supported through the support of the computer is created by computer calculation processing, the NC machine is controlled according to the NC data, and the workpiece is processed to create the 3D product In the 3D product creation device
Data of the three-dimensional product model, processing data of the NC processing machine that has at least the thickness of the frame as attribute data, and processes the workpiece, tool data of a tool used for the NC processing machine, A database for storing a template of the three-dimensional product model having attribute data comprising at least the dimensions and number of the plurality of supports;
The 3D product model data, the processing machine data, the tool data, and the template are read from the database, the external dimensions of the 3D product model are calculated from the 3D product model data, and the 3D obtains an average average unit normal vector is a multiple of the unit normal vector with respect to all the surfaces in the product model, it sets the direction of this vector to the other surface side with respect to the three-dimensional product model, of the other The opposite side of the angle of 180 ° with respect to the surface side is set as the one surface side, the thickness of the frame is set from the processing machine data, and the dimensions and number of the plurality of supports from the template of the three-dimensional product model The three-dimensional product model's external dimensions, the other and one surface sides, the frame thickness, and the composite And dimensions and number of support and initial value data setting means for setting an initial value data having,
Frame creation means for determining the frame dimensions from the outer dimensions of the three-dimensional product model in the initial value data, the dimensions of the plurality of supports, and the thickness of the frame;
Support arrangement means for arranging a plurality of support arrangement points for creating the plurality of supports on the data of the three-dimensional product model according to the number of the plurality of supports in the initial value data;
A plurality of cross sections of the plurality of supports are created at the plurality of support arrangement points from the dimensions of the plurality of supports and the thickness of the frame in the initial value data, and these support cross sections are extended on the data of the three-dimensional product model. A support creation means for creating the plurality of support data;
Data of the first processing data model for processing the workpiece from the other surface side by merging the frame data, the plurality of support data, and the three-dimensional product model data. A machining data model creating means for creating and creating data of a second machining data model for machining the workpiece from the one surface side;
NC data creating means for creating the NC data for controlling the operation of the NC machine from each data of the first and second machining data models;
A division unit that connects the plurality of supports to create a line on the frame surface, and divides the line into the other surface side and the one surface side by the line,
First machining control means for machining the workpiece according to the NC data on the other surface side of the three-dimensional product machining model among the NC data;
Second machining control means for machining the workpiece according to the NC data on the one surface side of the three-dimensional product machining model of the NC data;
A three-dimensional product creation apparatus characterized by comprising: In the three-dimensional product model, two surfaces are formed in which the angles of the average normal vectors of the surfaces of the three-dimensional product model are different from each other and form a boundary adjacent to each other.
The support arrangement means extracts the boundary of the two surfaces having different angles of the average normal vector with respect to the two surfaces of the three-dimensional product model as a parting line, and supports the support in the initial value data. 10. The three-dimensional product creation apparatus according to claim 8 , wherein the support placement points for creating the support are placed on the parting line according to the number of the support points . The support creation means includes a projection unit that orthographically projects each support arrangement point on the inner side surface of the frame;
Read out the dimensions of the support and the thickness of the frame from the initial value data, and create a cross section of the support from the dimensions and thickness,
A trim portion for trimming the support cross section to match the shape of the three-dimensional product model;
An extruding part for extruding the support cross section to the inner surface of the three-dimensional product model to create the support;
3D product producing apparatus according to claim 8, wherein it has a. The processing data model creation means creates a line on the frame surface by connecting the supports, and a division unit that divides the other surface side and the one surface side by the line,
A first machining model creating unit for creating the first machining data model for machining from the other surface side by merging the frame, each support and the three-dimensional product model ;
A second machining model creation unit for creating the second machining data model for machining from the one surface side;
The three-dimensional product creation apparatus according to claim 8 or 9 , characterized by comprising : The first processing control means controls the position of the tool of the NC processing machine along the trajectory of the tool according to the NC data on the other surface side to process the workpiece.
The second processing control means controls the position of the tool of the NC processing machine along the trajectory of the tool according to the NC data on the one surface side, and processes the workpiece.
Each of the tool trajectories forms a plurality of layers in a direction perpendicular to the axial direction of the tool in the processing region of the workpiece, and sequentially processes these layers one by one along the axial direction of the tool. Contour tool trajectory,
The three-dimensional product creation apparatus according to claim 9 . A three-dimensional product model having a three-dimensional product model according to the shape of the three-dimensional product and having one surface and the other surface opposite to the one surface by an angle of 180 ° is provided. NC data of a 3D product machining model supported through the support of the machine is created by computer processing, the NC machine is controlled according to the NC data, and the workpiece is machined to create the 3D product. A computer-readable model creation program for processing a three-dimensional product,
Data of the three-dimensional product model, processing data of the NC processing machine that has at least the thickness of the frame as attribute data, and processes the workpiece, tool data of a tool used for the NC processing machine, Reading the template of the three-dimensional product model having attribute data including at least the dimensions and the number of the plurality of supports, calculating the outer dimensions of the three-dimensional product model from the data of the three-dimensional product model, An average unit normal vector, which is an average of a plurality of unit normal vectors, is obtained for all surfaces in the three-dimensional product model, the direction of the vector is set on the other surface side with respect to the three-dimensional product model, and the other The opposite side of the angle of 180 ° with respect to the direction of the surface side is set to the one surface side, and from the processing machine data, the The thickness of the frame is set, the dimensions and the number of the plurality of supports are set from the template of the three-dimensional product model, the outer dimensions of the three-dimensional product model, the other surface side and the one surface side, Setting initial value data having the thickness of the frame and the dimensions and number of the plurality of supports;
Determining the dimensions of the frame from the external dimensions of the three-dimensional product model in the initial value data, the dimensions of the plurality of supports, and the thickness of the frame;
Placing a plurality of support placement points for creating the plurality of supports on the data of the three-dimensional product model according to the number of the plurality of supports in the initial value data;
The plurality of support sections are created at the plurality of support placement points from the support dimensions and the frame thickness in the initial value data, and the support sections are extended to the data of the three-dimensional product model. To create support data for
Data of the first processing data model for processing the workpiece from the other surface side by merging the frame data, the plurality of support data, and the three-dimensional product model data. Creating and creating data of a second machining data model for machining the workpiece from the one surface side;
Have
Creating the NC data for controlling the operation of the NC machine from the data of the first and second machining data models,
3D product processing model creation program characterized by the above . According shape of the three-dimensional product, and has a three-dimensional product model and a one surface and the other surface to be ANGLE 180 ° opposite to the one surface, the three-dimensional product model in the frame NC data of a 3D product machining model supported through multiple supports is created by computer processing, the NC machine is controlled according to the NC data, and the workpiece is processed to produce the 3D product. A computer-readable program for creating a three-dimensional product processing model that can be read by the computer,
Data of the three-dimensional product model, processing data of the NC processing machine that has at least the thickness of the frame as attribute data, and processes the workpiece, tool data of a tool used for the NC processing machine, Reading the template of the three-dimensional product model having attribute data including at least the dimensions and the number of the plurality of supports, calculating the outer dimensions of the three-dimensional product model from the data of the three-dimensional product model, An average unit normal vector that is an average of a plurality of unit normal vectors is obtained for all surfaces in the three-dimensional product model, the direction of the vector is set on the other surface side with respect to the three-dimensional product model, and the other The side opposite to the angle of 180 ° with respect to the surface side of the frame is set to the one surface side, and the frame is obtained from the processing machine data The thickness is set, the dimensions and the number of the plurality of supports are set from the template of the three-dimensional product model, the outer dimensions of the three-dimensional product model, the other and the one surface side, and the thickness of the frame And setting initial value data having the dimensions and the number of the plurality of supports,
Determining the dimensions of the frame from the external dimensions of the three-dimensional product model in the initial value data, the dimensions of the plurality of supports, and the thickness of the frame;
Placing a plurality of support placement points for creating the plurality of supports on the data of the three-dimensional product model according to the number of the plurality of supports in the initial value data;
From the dimensions of the plurality of supports and the thickness of the frame in the initial value data, cross sections of the plurality of supports are respectively created at the plurality of support arrangement points, and these support cross sections are extended on the data of the three-dimensional product model. And creating the plurality of support data,
Data of the first processing data model for processing the workpiece from the other surface side by merging the frame data, the plurality of support data, and the three-dimensional product model data. Creating and creating data of a second machining data model for machining the workpiece from the one surface side;
Creating the NC data for controlling the operation of the NC machine from the data of the first and second machining data models;
Connecting the plurality of supports to create a line on the frame surface and dividing the line into the other surface side and the one surface side by the line;
Machining the workpiece according to the NC data on the other surface side of the three-dimensional product machining model of the NC data;
Machining the workpiece according to the NC data on the one surface side of the three-dimensional product machining model of the NC data;
A program for creating a model for processing a three-dimensional product, comprising:

Images