JPS62140744A - Conversion processing device for machining data in automatic machine - Google Patents

Abstract

PURPOSE:To directly perform a conversion process of machining data, by converting a separate machining shape element, having a coordinate system, into a unified coordinate system to be linked and the element from CAD data into CDM data. CONSTITUTION:A CPU1, which sets a coordinate system in a processing part 8 to parts drawing and machining drawing data Ma, Mb from a CAD unit M by an input from a keyboard 2 with picture, assigns a relative angle of the coordinate axis to a machining direction in a processing part 71 while a kind of register shape corresponding to a machining process content in a processing part 72, next the coordinate system for every shape and kind is set by a machining surface coordinate system in a processing part 73. And the CPU1 registers a machining shape by successively assigning a machining element in a processing part 74, in this way, the CPU1, which sets the section proper coordinate system in a processing part 75 to successively assign the machining element registering a sectional shape in a processing part 76 while the required accuracy information together for every element in a processing part 77, prepares a machining surface data 18. In this way, conversion can be directly performed into the machining data.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides NC processing of each workpiece from parts drawing data and material drawing data by CAD (computer-aided design) or the like.
In the process of creating processing information that automatically creates data and supports the implementation of CAM (computer-aided manufacturing) in a comprehensive production system, CAD data is converted into CAD by interacting with graphic information.
Regarding the machining data conversion processing device that converts into M data, in particular, each machining shape element is once decomposed into unit shape elements, and then reassembled by combination and integration, so that direct and practical CAM data can be easily converted. The present invention also relates to a machining data conversion processing device for an automatic machining machine that can be quickly obtained.

[Conventional technology]

In FMS, computers perform schedule planning,
The two-step machining plan, tool supply plan, etc. will be operated online, but currently the structure of the machining information creation device that presents and downloads the higher-level parts drawing data and material drawing data to the FMS is as follows. CAD/CAM, which is applied to parts drawings and material drawings, lacks consistency and only exists partially and fragmentarily.
It was only possible to perform processing on a single part using a specific machine and a fixed process order. Therefore, this cutting technique is only suitable for machining simple parts shapes, and for complex parts shapes, machining information has been created manually by y1 experts.

[Problem that the invention seeks to solve]

Machining information is not just NC data necessary for automatic operation of NC machine tools. The decision as to what kind of concept and what kind of machining method to use for machining a part is greatly reflected in the NC data that is created. The main purpose of current CA and M is to automatically create processing information for parts placed on NC machine tools, and has not yet taken into consideration the evaluation of production methods using FMS and the like. On the other hand, CAD parts drawing data and material drawing data are simply processing information for determining the final result. It is necessary to include information on machining techniques, such as determining process procedures (determining process steps, etc.), machining methods, and arranging, combining, and fixing parts on pallets in an optimal manner, so-called setup methods, etc.

The problem here is, first, how to divide the machining process and decide which machines to use in order to improve efficiency and level the production. Second, for the divided machining process, how to place the parts on the bullet or combine them for machining.
There is a way to set up processing. Thirdly, how to conceptualize the machining method, and consider the processing of the tools to be used and the allocation of machining areas based on the machining shape and machining accuracy information, which will lead to consistency and flexibility from CAD to NC machining. This is the key point of sex.

The above material drawing data shows the shape and dimensions of the workpiece material before machining, and the parts drawing data shows the completed shape and dimensions of the part at the end of machining. The transition is the processing operation. Conventional C
AD/CAM treated both of these diagrams in a short-circuit manner, and was only applicable to the workpiece, but needless to say, machining work is no longer a transition that can be completed in one simple step; This is achieved through multiple processes under various conditions and constraints such as jigs. First, shape data for CAM with those machining conditions set is created, and subsequent processing is performed using this CAM. Systematic processing information must be constructed by focusing on data.

The present invention was developed in view of these circumstances, and
During the conversion process from graphic data for design (CA, D data) to shape data for processing (CAM data), individual processing shape elements having coordinate systems are replaced with a unified coordinate system and linked, and It is an object of the present invention to provide a machining data conversion processing device for an automatic machining machine that can perform simple and clear data settings and construct a machining shape that is direct and practical for subsequent machining information creation.

[Means for solving problems]

In the present invention, a means to solve the above-mentioned problems is a processing data conversion processing device that creates processing shape data for automatic processing from design drawing data, and which converts a coordinate system into the design drawing data. A component or material coordinate system processing section to set, a machining surface or material surface coordinate system processing section that specifies the relative angle between the coordinate axis of the component or material coordinate system and the machining direction, and a type of shape to be registered to the contents of the machining process. A shape type setting processing unit that specifies in correspondence, a shape coordinate system processing unit that sets a coordinate system for each shape type n based on the machining surface coordinate system, and a shape coordinate system processing unit that sequentially specifies machining elements based on the shape coordinate system. A machining shape setting processing section that registers the machining shape by doing this, a cross-section coordinate system processing section that sets a cross-section-specific coordinate system under the shape coordinate system, and a section coordinate system processing section that sequentially instructs machining elements under the cross-section coordinate system. Automatic machining characterized in that it is comprised of a cross-sectional shape setting processing section that registers a cross-sectional shape by processing, and a processing element setting processing section that also registers required accuracy information for each processing element or each cross-sectional element. This is a processing data conversion processing device in a machine.

In the above terms, the parts drawing data in the present invention indicates the completed state on the product side, and the material drawing data indicates the shape of the raw material. Both are drawing data for design and are used for CAD.

On the other hand, the machining data used in the present invention refers to data that is divided and integrated into each shape element of the part in order to process the part, each of which is linked by a coordinate system, and various conditions for machining are set for each shape element. Material drawing data is data that is divided and integrated for each shape element of the raw material, each of which is linked by a coordinate system, and processing conditions are set for each shape element.

In particular, the material drawing data shows the casting shape and pre-machining (rough machining).
Even objects that have been created are treated as material drawing data.

That is, processing drawing data and material drawing data are used for CAM. Therefore, in the present invention, the creation of processing drawing data from parts drawing data will be explained, but the process of creating material drawing data from material drawing data is also based on the same concept.

[Effect]

In the present invention, individual machining shape elements having coordinate systems are replaced with a unified coordinate system, and each machining surface is set by linking to the component coordinate system (or material coordinate system) as shown in FIG. After once decomposing each machining shape element into unit shape elements with respect to the machining surface coordinates, the parts are machined as shown in Figure 12 according to simple and systematic data settings on the shape coordinate system and cross-sectional coordinate system. Reconstruct the shape and create practical CAM data with coordinate values and processing accuracy.

FIGS. 14(a) and 1(b) are diagrams for explaining the principle of CAD data, and FIG. 14(a) shows configuration data of processing shape elements.

The CAD data includes a point P, a line segment L (starting point S - ending point E), an arc C (radius T, circumferential angle - β), and a character string ABC as shown in the figure (b).
It is simply expressed in the X-Y coordinate system as shown in <<.

The graphic elements of the processed shape of the CAM data are set on a coordinate system specific to the shape. Contours, reference lines, and reference points are set on the shape coordinate system, and cross sections are set on the cross-sectional coordinate shape. The interference shape is the part coordinate system (material coordinate system) and the machined surface coordinate system (material surface coordinate system).
, set on the shape coordinate system.

The coordinate systems used in creating machining drawings are a single component coordinate system for each component, a machining surface coordinate system defined for each machining surface, a shape coordinate system for each machining shape, and a cross-sectional coordinate system representing its cross section.

Similarly, the coordinate systems used in creating material drawings include a single material coordinate system for each material, a material surface coordinate system defined for each material surface, a shape coordinate system for each material shape, and a cross-sectional coordinate system representing its cross section. It is.

Graphical elements that make up the shape of CAM data include points, line segments, and circular arcs, and are composed of graphical information such as cannonball form and processing information.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing an example of a processing data conversion processing device in an automatic processing machine embodying the present invention. Since the embodiment of the present invention is suitable for use as a part of a machining information generating apparatus as shown in FIG. 2, the machining information generating apparatus in general will first be described with reference to FIG.

The present invention is broadly divided into four processing sections. The first processing department 101 is for machining design processing, which inputs data of parts drawings and material drawings created with CAD, and processes drawings for CAM.
Create material drawings, area drawings, process drawings, and one-step plan data.

The second processing section 102 is called machining method processing, and manually inputs the process drawing 1 setup plan data, sets the machining method, and sets the tools.

It integrates tools, searches for tools, and outputs data as a machining section 4i document. The third processing section 103 is called setup drawing processing, which uses the setup plan obtained in the machining design process, material drawing data, and data obtained in the machining method process to perform step combinations and jigs for multiple machined parts. Place parts, check for tool interference, and create setup diagram data. The fourth processing section 104 is called machining technology processing, and processes the machining order, machining area, and machining conditions based on the setup diagram data.

Decide cutting conditions and output data as work instructions. The obtained data is then converted into a part program by processing data conversion processing. Next, NC data is created from the part program by the automatic NC data creation device.

In FIG. 2, various processing data and commands are input and output to the CPU t from a guitar board 2 with a screen via an input/output device 2a.

The drawing data input from the CA D device M is of two types: part drawing data Ma designed as a product and material drawing data Mb of the parts to be processed, and shape data, additional data, etc. are input for each.

As will be explained in each section, the reference data file 3 stores various reference data that serve as a reference for processing in each processing section. Machine data file 4 contains machine data such as the machine name and specifications of the machine to be installed, jig data file 5 contains jig data for mounting and fixing the workpiece, and tool data file 6 contains the tools to be used. tool name,
Tool data such as tool diameter and cutting condition standard data file 7 contains cutting condition standard data for determining cutting conditions.

Based on the parts drawing data Ma and material drawing data Mb created by the CAD device M, it is converted into data that can be processed as CAM data. Machining drawing data, material drawing data,
Area diagram data, process diagram data, and setup plan data are created (these processing steps are called machining design) and processed.

The parts diagram data is taken into a parts diagram coordinate system setting processing section 8, and the coordinate system of the parts diagram is set. Four coordinate systems are set as the coordinate system of the part diagram: a part coordinate system, a processing surface coordinate system, a shape coordinate system, and a cross-sectional coordinate system.

The cross-sectional coordinate system is dependent on the shape coordinate system, the shape coordinate system is dependent on the machining surface coordinate system, and the machining surface coordinate system is dependent on the component coordinate system, and these coordinate systems are dependent on the component coordinate system and are related to each other by having transformation data. Linked. The machining shape processing section 9 performs surface machining on the machining shape based on the four coordinate systems set by the parts drawing coordinate system setting processing section 8.

Shapes are classified into groove machining, side machining, pocket machining, hole machining, and maximum machining. Machining shape data processed based on various coordinate systems is stored in the memory 8 and output as machining drawing data.

The material drawing data is taken into the material drawing coordinate system setting processing section 10, and the coordinate system of the material drawing is set.

Coordinate system settings for material drawings are similar to those for parts drawings. Based on the coordinate system set by the material drawing coordinate system setting processing section 10, the material shape processing section 11 classifies the material shape into surfaces, grooves, side surfaces, pockets, holes, and installations and stores them as material drawing data. 19 and output.

The U construction drawing data and the material drawing data are taken into a machining area drawing processing section 12 which synthesizes them. Processing drawing data and material drawing data are combined to create a region to be cut away.

Furthermore, in the area correction processing unit 13, the training fee (W) or 4f
Area correction processing such as f-cutting allowance is performed, and processing area map data is stored in the memory 20 and output.

The individual area diagram data is taken into the machining area division processing unit 14, and the machining area is automatically divided into rough, medium, and finishing areas. , change the fixing method when performing different processing, or when placing and mounting parts on a pallet (setup change)
This process is performed when processing is not performed (this is a process in which the process is carried out), that is, when rough and semi-finishing processes are performed by dividing into multiple processes. The machining area is divided, and the divided data and the machine data in the machine data file 4 are imported into the process drawing processing unit 15, which instructs the machine to be used, and performs setup (installation of parts on the valet) in the instructed machine. Processing shapes that can be machined in one step, that is, automatic processing in one step (referring to a fixing operation), are collected to create process drawing data and stored in the memory 21.

The process drawing data, material drawing data, and jig data are imported into the setup plan processing unit 16, which selects the jig base and processes the process drawing (area drawing data for each process) and material drawing (workpiece).
, processing for arranging jig parts (stoppers, clamping plates, bolts, etc.) is performed. Furthermore, the tool interference check processing unit 17 displays and moves the machine origin and tool to check for interference, correct the placement of parts and jigs in one process, and transform data that connects the data of each shape and each coordinate system. get. The setup plan data is stored in the memory 22 and output.

The above processing is performed for each process of one part, and processing drawing data memory 18. Material diagram data memory 19, area diagram data memory 20. Each data stored in the process drawing data memory 21 and the setup plan data memory 22 is
Each step is filed in the work file +1154.

Thereafter, processing is performed continuously for each process, but the gate 56 is opened by the end signal for each process, and all data filed in the work file (1154) is filed in the machining design file 59.When one part is completed, , the following parts diagram processing is performed.By performing the above procedure for each part and each process, processing design processing is performed.

Next, processing of the machining method described in detail below is performed based on each data and reference data stored in the machining design file 59 described above.

Necessary data filed in the machining design file 59 and necessary reference data filed in the standard data file 3 are taken into the area processing unit 23 for each machining method, and the six types of machining methods (surface, groove, groove, etc.) are imported.

A process is performed to divide the area for each processing method (one hole insertion, pocket, side surface), and area data for each processing method is stored in the memory 30 and output. Area processing for each processing method is performed based on reference data such as a value instruction for the processing method and discrimination data to be divided in the processing method.

The area data for each machining method is taken into the machining content processing unit 24 for each machining method together with necessary reference data, and machining content data for each machining content, such as machining diameter.

Machining depth etc. are processed and created, and machining content data for each machining method is stored in the memory 31 and output.

The reference data is the data for determining the processing method code.

These include tool diameter and tool length data for each tool code, data for determining the degree of finishing, and data for determining the tool code.

The area data for each machining method stored in the area data memory 30 for each machining method, the machining content data for each machining method stored in the machining content data memory 31 for each machining method, and necessary reference data are stored in the tool search processing section. 25, set the tool code for the machining method (face mill cutter, end mill cutter, etc.), perform division processing such as rough, medium, and finishing machining for each tool, create area data for each tool, and store it in the memory 32. It is stored and output. The area data for each tool sets a machining area for each tool code based on the division base par data for rough/finish machining or rough/medium/finish machining. The area data for each tool is taken into the processing content processing unit for each tool 26 together with the necessary standard data, and the tool code (
The machining diameter, machining depth, etc. for each (face mill cutter, end mill cutter, etc.) are processed, and machining content data for each tool is stored in the memory 33 and output. The reference data is setting data such as tool diameter and tool length for each tool.

Machining content data for each tool and necessary standard data are taken into the integrated instruction processing section 27 and processed and created so as to integrate and instruct common areas, for example, common areas that can be cut with the same tool, from each tool area. , integrated instruction data are stored in the memory 34 and output. 49 data is prepared in a memory table for each tool code, including machinable sources.

In addition, the tool diameter and tool range are set for rough, medium, and finishing machining.

Machining content data for each tool, integrated instruction data, tool data
The tool data, machine data, and necessary reference data stored in the file 6 are taken into the tool search processing section 28, and processing is performed to search for tools and determine the tool to be used. The created tool-in-use data is stored in the tool-in-use data memory 35 and output.

Area data memory for each processing method 30. Processing content data memory for each processing method 31. Tool area data memory 32
．． Based on the data stored in the tool-by-tool machining content data memory 33 and the integrated instruction data memory 34, the machining standard creation processing unit 29 stores the tool diameter and finishing degree for each tool.

A machining standard document that displays a list of machining details such as machining surfaces is created, and the machining standard document output data is recorded in the memory 36.
19 and output.

The output data stored in these memories 30 to 36 is 1
Each part is filed in a work file (2) 55 for each process. When processing for each process is performed and machining specification data for the part is created, a part-by-part end signal opens the gate 58, and each data filed in the work file (2) 55 is transferred to the machining method file 60. Filed in When the processing for each process for one part is completed, data for the next part is input from the CAD device M, and the data is transferred to the first processing department 10.
The processes of the first and second processing departments 102 are repeated.

Next, based on the machining design file 59 and the machining method file 60, setup diagram processing and machining technology processing, which will be described in detail below, are performed.

The setup plan data filed in the machining design file 59, the necessary standard data filed in the standard data file 3, the jig data filed in the jig data file 5, and the tool data file 6. The tool data and each data filed in the machining method file 60 is taken into the stage combination processing unit 37, and based on the connection of each coordinate system, the combination of setups by arranging a plurality of parts, the arrangement of jig parts, and the tools are performed. A process of checking for interference is performed. Furthermore, the first instruction processing section 38 prioritizes parts, machining surfaces, and tools, performs processing to control the machining order based on the priority instructions, and stores the setup diagram data in the memory 44 and outputs it.

The setup diagram data stored in the setup diagram data memory 44 is filed one by one in the work file (3) 61. The gate 62 is opened by the end signal of each setup cycle, and the setup diagram is displayed.
The setup diagram data is filed in the processing technology file 63. The setup diagram data, machining content data for each tool, and necessary reference data are taken into the per-tool machining order processing section 39, and processing is performed to determine the machining order for each tool based on the machining order determination table according to the priority instructions. Processing order data is stored in memory 45 and output.

Necessary reference data, area data for each tool, machining content data for each tool, and tool data used are taken into the machining area processing unit 40, and the surface machining area is integrated.

That is, in the machining area for each tool, when there are multiple surface machining operations performed on the same machining surface using the same tool, integration is performed. When machining is divided into grooves, side surfaces, side and bottom parts of pocket machining, etc., the machining area for each determined tool is divided according to standard data when machining is performed multiple times, and the final machining area is Processing is performed to create the processing area data, and the processing area data is stored in the memory 46.

The standard data includes the amount of depth of cut per cut, the amount of margin on the bottom surface,
These include the amount of radial shift of the side surface for each tool, the radial shift of the pocket, etc. Necessary standard data, processing area data,
Machining content data and tool data for each tool are taken into the machining condition processing unit 41, and the movement type (straight line 2 circular arc, drill machining cycle, etc.), movement parameters, (cutting direction, cutting radius, relief term, etc.) and clearance are input. Processing is performed to determine machining conditions such as (estimate of margin for rapid traverse) and the presence or absence of coolant, and the machining condition data is stored in the memory 47. Cutting condition standard data with a cutting condition table in which tool code, finishing level, depth of cut, radial depth of cut, cutting speed by material, and feed rate are set, machining content data for each tool, tool data, setup diagram data, and machining The condition data is taken into the cutting condition processing unit 42, processing for determining cutting conditions such as depth of cut, cutting speed, and feed rate is performed, and the cutting condition data is stored in the cutting condition data memory 48.

Machining order data for each tool, machining condition data, cutting condition data, tool data, and machining content data for each tool are taken into the work instruction creation processing section 43, and tool data, rotation speed, feed rate, machining surface, etc. are generated for each machining order. The process of displaying the work instruction list is performed, and the work instruction output data is stored in the memory 49 and output and displayed. Each data stored in the memory 44 to memory 49 is a work file +3)
Filed in 61.

The setup diagram processing and processing technology processing are performed, the gate 62 is opened by a processing technology end signal for each setup cycle, and each data filed in the work file (3161) is filed in the setup diagram/processing technology file 63.

The basic data required for part program conversion, the data stored in the machining method file 601 setup diagram, the machining technology file 63, and machine data are taken into the machining data conversion processing unit 50 and converted into a part program. The converted data is stored in the memory 51. The converted data is taken into the automatic NC data creation device 52, an NC program is created, and the data is output as an NC tape 53 for machining of a designated machine. Further, the NC program data is filed in the NC data file 63.

The machining data conversion processing device embodying the present invention is related to the machining shape processing unit 9 (see Fig. 2) or the material shape processing unit 11 (see Fig. 2) in the above-mentioned machining information creation device. As shown in Figure 15 (a), the conversion process to create processing drawing data from parts drawing data, or the first
This is applied to the conversion process for creating material drawing data from material drawing data as shown in Fig. 5 (b), but the embodiment shown in Fig. 1 takes as an example the conversion process from parts drawing data to processing drawing data. explain.

In FIG. 1, the processing data conversion processing device includes a central processing unit (CPU) 1 which is also a control unit for the entire device, a keyboard with a screen 2 which is a means of interaction, and a personal output port 2a.
s command file 2b, stylus pen 2C, and tablet 2d, a component coordinate system processing unit 8 that sets a coordinate system in part drawing data, and a machining surface coordinate system process that specifies the relative angle between the coordinate axes of the component coordinate system and the machining direction. a shape type setting processing section 72 that specifies the type of shape to be registered in correspondence with the contents of the machining process; and a shape coordinate system processing section that sets a coordinate system for each shape type based on the machining surface coordinate system. 73, a machining shape setting processing unit 74 that registers a machining shape by sequentially specifying machining elements under the shape coordinate system, and a cross-sectional coordinate system process that sets a coordinate system unique to the cross section under the shape coordinate system. Part 7
5, a cross-sectional shape setting processing unit 76 that registers a cross-sectional shape by sequentially specifying machining elements based on a cross-sectional coordinate system;
A machining element setting processing unit 77 that also registers required accuracy information for each machining element or cross-sectional element, and a machining element setting processing unit 77 that also registers required accuracy information for each element of machining elements or cross-sectional elements, and a material shape, jig component, etc. It is equipped with an interference shape setting processing section 78 that sets an interference area of a machine, etc., and commands selected by the operator on the menu are manually inputted from the CPU 1 to each of the above processing sections, and processing data is reported each time. Then, the user will interact using the keyboard with screen 2. Further, the set data is stored in an online memory 8a connected to each processing section as required.

7], a, 73a, 78a, 77a, and 75a and stored in the processing drawing data memory 18.

FIG. 3 is a procedure diagram showing an example of the operation of the above-mentioned processed data conversion processing device. Although this figure shows an example of creating a processed drawing, the procedure for creating a material drawing is almost the same, and the operations are as shown in FIG.

In FIG. 3, the 0th stage of the procedure is to manually input the part drawing data to the part coordinate system processing section 8 and to set the part coordinate system that will be the basis of the coordinate system in the processing drawing. The method is
By outputting a part diagram based on the general CAD coordinate system shown in Figure 5 (A) on the CRT screen and specifying the * mark, a coordinate system with the intersection point as the origin and the indicated direction as positive can be created as shown in Figure 5 (A).
Set as shown in b). The set data is stored in the component coordinate system setting data memory 8a.

The 0th stage of the procedure is to give a command to the machining surface coordinate system processing unit 71 to set the machining surface coordinate system in the part drawing data based on the component coordinate system set in the previous stage. This method is based on the component coordinate system (χo, Yo
, Zo) is output to the CRT screen,
By specifying the origin position and the relative angle with the coordinate axes of the component coordinate system, the coordinate system (X, ,
Y,, Zl). The set data is stored in the machining surface coordinate system setting data memory 71a.

In the 0th stage of the procedure, shape designation data is input to the shape type setting processing section 72 at the same time as the processing surface coordinate system is called.

In the 0th stage of the procedure, based on the shape specification data, surface machining shape selection O1 groove machining shape selection O, pocket machining shape selection O
Select one of the 9 side machining shape selections O, and if the interference shape examination shape selection O is required, make that selection. According to those selections, the 0th stage will be the immersive machining shown in Figure 7 (a). Each shape selection up to shape selection O or interference shape selection O
Branch to one of the following. (Figure 7 shows an example of surface machining and input machining.) In the 0th stage, commands and parts drawing data are input to the shape coordinate system processing unit 73, and the steps shown in Figures 8 (a) and (b)
As shown in , a shape-specific coordinate system is set under the machining surface coordinate system. Each coordinate axis is defined by specifying the origin position and the relative angle with the coordinate axes of the machining surface coordinate system. If the setting of the shape coordinate system is omitted, the machined surface coordinate system is used as is as the shape coordinate system. The set coordinate system data (Xz, Y2. Z2) is stored in the shape coordinate system setting data memory 73a.

In the 0th stage, commands, part drawing data, and shape type selection results are input to the machining shape setting processing section 74, and elements are sequentially designated as shown in FIG. 9 under the shape coordinate system. The machining shape is registered via the machining element setting processing section 77. At this time, processing information such as surface roughness, tolerance, and precision required for each element is also registered.

First, the shape elements are made into surfaces, which correspond to the contents of the processing process. L
It is classified into 6 types: pocket, side, and hole 2 insertion, and these types can be further defined by contours and cross sections, or reference lines, cross-section reference points, and cross sections, targeting the boundary between objects and spaces. For example, the outer or inner circumference can be considered to indicate the machining range.

In the 0th stage, a command and part diagram data are input to the cross-sectional coordinate system processing unit 75, and a coordinate system specific to the cross-section is set based on the shape coordinate system. As shown in Figure 10, the Y-axis of the cross-sectional coordinate system has the same component as the Z-axis of the shape coordinate system, and the X-axis has a component in the positive direction of the X-axis or Y-axis of the shape coordinate system, so the cross-sectional coordinate The system is defined by specifying one point on the shape coordinate system and the direction of the Z axis. The set coordinate system data (X3.
Y: l.

L) is stored in the cross-sectional coordinate system setting data memory 75a.

In step (2), the command, part drawing data, and shape type selection results are input to the cross-sectional shape setting processing unit 76, and the elements are sequentially designated based on the cross-sectional coordinate system, thereby creating the cross-sectional shape as shown in FIG. Register the shape. At this time, the machining element setting processing section 77 also inputs machining information such as surface roughness, tolerance, precision, etc. required for each element. Machining element setting processing section 77
Each data set in is stored in the machining shape, cross-sectional shape, and machining element setting data memory 77a.

It should be noted that the presence or absence of interference is also examined for the shape creation for each of these shapes, and the ninth stage of interference shape creation is performed as required.

Then, by repeating the above procedure for each machined shape, a machined drawing is created. Also, the creation of material drawings is almost the same. In other words, CAD data has been converted to CAM data.

FIG. 12 is a diagram showing the coordinate system link of the machining drawing data created as described above on a three-dimensional screen, and shows the component coordinate system (Xo,
The processing surface coordinate system (X+, y++z
o) are set, and based on them, the shape coordinate system (Xz
, yz, 22) and the cross-sectional coordinate system (X3.y3.Z
l) is set. FIG. 13 is an explanatory diagram showing the relationship between the apparatus of the present invention and the coordinate systems linked by the procedure. In this way, the shape elements once decomposed into unitary elements are reconstructed according to the linked coordinate system as described above, and C
Since it is converted to AM data, the setting process is simple and standardized.

〔Effect of the invention〕

As explained above, according to the present invention, when converting CAD data to CAM data, individual machining shape elements are linked under a unified coordinate system, and data settings are performed in a simple and easy-to-operate manner. direct and practical self-%)J
A processing data conversion processing device for a processing machine can be provided.

Although the present invention has been described with respect to the creation of processing drawing data from parts drawing data, this processing process also applies to the creation of material drawing data from material drawing data. The key is how to divide and integrate the shape of the article and how to set processing conditions for each shape element. In particular, in the case of a cast metal shape, the surface is ~ and the machined surface is W-So, the surface roughness, tolerance,
Considering the accuracy standards broadly, they can be used in common and are therefore included in the technical concept of the present invention.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a block diagram of a processing information creation device suitable for the embodiment, Figs. 3 and 4 are procedure diagrams of the embodiment, and Figs. FIG. 11 is an explanatory diagram of shape elements, FIGS. 12 to 14 are explanatory diagrams of coordinate system trees, and FIG. 15 is an explanatory diagram of data conversion. DESCRIPTION OF SYMBOLS 1... CPU, 8... Component coordinate system processing unit, 71... Machining surface coordinate system processing unit, 72... Shape type setting processing unit, 73... Shape coordinate system processing unit, 74... - Machining shape setting processing unit, 75... Cross-sectional coordinate system processing unit, 76... Cross-sectional shape setting processing unit, 77... Machining element setting processing unit, 78... Interference shape setting processing unit. Patent applicant Hitachi Seiki Co., Ltd. Figure 5 (a) (
b) Figure 6 (a) (b) u
, u, u Tt Pano J Off diagram (a) (b)
Figure 8 (a) (b) U,
U, Umo person month figure 12 YO figure 13 ll11 North Fi exclamation figure 14 (a) tO,01X

Claims (1)

[Claims] A machining data conversion processing device that creates machining shape data for automatic machining from design graphic data, which includes a component or material coordinate system processing unit that sets a coordinate system in the design graphic data, and a component or material coordinate system. A processing surface or material surface coordinate system processing section that specifies the relative angle between the coordinate axis and the processing direction, a shape type setting processing section that specifies the type of shape to be registered in accordance with the contents of the processing process, and a processing surface coordinate system a shape coordinate system processing unit that sets a coordinate system for each shape type under
A machining shape setting processing section that registers the machining shape by sequentially specifying machining elements under the shape coordinate system, a cross-section coordinate system processing section that sets a cross-section-specific coordinate system under the shape coordinate system, and A cross-sectional shape setting processing unit that registers the cross-sectional shape by sequentially specifying the machining elements based on the coordinate system, and a machining element setting processing unit that also registers the required accuracy information for each machining element or cross-sectional element. A machining data conversion processing device for an automatic machining machine, characterized by comprising: