JP2020086759A - Three-dimensional model creation system, processing simulation system, and tool path automatic production system - Google Patents

Abstract

To provide a three-dimensional model creation system that produces model data of a cable or pipe which is connected to a structure such as a jig.SOLUTION: A three-dimensional model creation system includes: a three-dimensional data acquisition unit that acquires three-dimensional data containing positions of plural measurement points which are predefined in a cable structure formed with a cable and/or pipe connected to a jig of a machine tool; a movement data acquisition unit that allows the three-dimensional data acquisition unit to acquire three-dimensional data concerning the cable structure while moving the jig, to which the cable structure is connected, in parallel with or rotationally to each of axial directions of the machine tool; and a position association data production unit that produces position association data which associates the three-dimensional data concerning the cable structure, which is acquired by the movement data acquisition unit, with the position data of the structure.SELECTED DRAWING: Figure 1

Description

The present invention relates to a three-dimensional model creation device that generates three-dimensional model data of a structure that constitutes a machine tool.

Conventionally, in a machine tool, a structure, particularly a tool, a work, and a work are held by controlling a drive mechanism unit that constitutes the machine tool by executing a suitably created machining program by a numerical controller. It is configured to process the work by making a relative motion with a jig or the like. For this reason, for example, when a newly created machining program includes a bug or the like, there is a possibility that a tool and a structure such as a jig may interfere with each other.
Therefore, a three-dimensional model including a structure that constitutes a machine tool, particularly a tool, a work, a jig that holds the work, and the like is created in advance, and using the three-dimensional model, for example, a newly created machining program on a computer. It has been confirmed in advance whether or not a tool and a structure such as a jig interfere with each other by performing a simulation with.
However, for example, a jig or the like is connected with a cable, a pipe, or the like, and the position and shape of these cables or pipes change depending on the position of the jig or the like. Therefore, even when a three-dimensional model including a structure that constitutes a machine tool, particularly a tool, a work, a jig that holds the work, and the like is created in advance and a simulation is performed based on the three-dimensional model, If the three-dimensional model does not include cables or pipes, the tool may interfere with the cables or pipes.

In this regard, as a technique for supporting the creation of a three-dimensional model, for example, in Patent Document 1, two cameras are used to image a structure constituting a machine tool from the X-axis, Y-axis, and Z-axis directions, respectively, and image data is obtained. Is generated and three-dimensional shape data of a structure is generated based on each image data. Further, Patent Document 2 discloses a technique of calculating each interference region in a lathe by detecting each shape from an image when the chuck and the work are not mounted and an image when the chuck is not mounted. Further, Patent Document 3 discloses a technique of generating an individual model of a jig based on the data obtained by integrally measuring the shapes of the work and the jig by the three-dimensional model of the work and the three-dimensional measurement.

Japanese Patent No. 4083554 Japanese Patent No. 4456455 Japanese Patent No. 6043234

However, none of the three-dimensional models of Patent Document 1 to Patent Document 3 includes a three-dimensional model related to, for example, a cable or piping connected to a jig or the like. For this reason, no matter which three-dimensional model is used for the simulation, none of the three-dimensional models includes cables or pipes, and therefore the tool may still interfere with the cables or pipes. ..
Therefore, using a three-dimensional model, for example, by simulating a newly created machining program on a computer, tools, structures such as jigs, cables and pipes connected to the jigs, In order to confirm in advance whether there will be interference, create model data such as cables and piping that are connected to structures such as jigs as a three-dimensional model. It is necessary to correlate the model data of (1) with the model data of the structure (for example, a jig) in which the cable, piping, etc. are installed. Furthermore, when simulating a machining program based on a three-dimensional model that includes model data of structures such as cables and piping, it is possible to move or rotate structures (for example, jigs) in which the cables and piping are installed. Accordingly, it is necessary to define how structures such as cables and piping change and move or rotate in the machine tool.

INDUSTRIAL APPLICABILITY The present invention generates model data of cables, pipes, etc. connected to an arbitrary structure such as a jig in a three-dimensional model of a machine tool, and at the same time, constructs a structure (for example How to change the structure of the cable, piping, etc. in the machine tool as the structure (for example, a jig) where the cable, piping, etc. is installed is associated with the model data of the tool) Then, it is an object of the present invention to provide a three-dimensional model creating apparatus capable of defining whether to move or rotate.

(1) The present invention is a three-dimensional model creating apparatus (for example, “three-dimensional model creating apparatus 1” described later) that creates a three-dimensional model of a structure including a work, a jig, and a tool attached to a machine tool. hand,
Three-dimensional data including the positions of a plurality of preset measurement points on a cable structure composed of cables and/or pipes connected to a predetermined structure of a machine tool (for example, a “connected structure” described later) A three-dimensional data acquisition unit (for example, “sensor 100” described later) to be acquired,
Causing the three-dimensional data acquisition unit to acquire three-dimensional data related to the cable structure while moving the structure to which the cable structure is connected in parallel or rotationally moving in each axial direction of the machine tool. A movement data acquisition unit (for example, a “movement data acquisition unit 101” described later),
A position correspondence data generation unit that generates position correspondence data that associates the three-dimensional data relating to the cable structure acquired by the movement data acquisition unit with the position data of the structure (for example, the “position correspondence data generation unit 102 described later”). ")When,
A three-dimensional model storage unit (e.g., “the below-described “3D model storage unit 131”) that stores a three-dimensional model including the three-dimensional data related to the cable structure and the position correspondence data in a storage unit (for example, a “three-dimensional model storage unit 131” below) 3D model storage unit 103 ″).

(2) On a computer (for example, "processing simulation device 2" described later) based on a three-dimensional model including three-dimensional data relating to the cable structure created by the three-dimensional model creating device according to (1). Then, the machining simulation of the machining program may be performed, and thereby the interference check between the structure of the tool and the structure including the cable structure may be performed.

(3) In the machining simulation of the machining program described in (2), when the structure model data of the tool and the structure model data of the work overlap each other, the overlapping area is deleted from the structure data model of the work, The structure data model may be updated.

(4) Based on the three-dimensional model including the three-dimensional data relating to the cable structure created by the three-dimensional model creating apparatus according to (1), a computer (for example, “tool path automatic generation device 3” described later) ), a machining simulation of the machining program is performed, and by doing so, interference check between the structure of the tool and the structure including the cable structure is performed, so that the tool rapid feed path that shortens the machining time can be obtained. You may make it calculate.

(5) In the machining simulation of the machining program described in (4), when the structure model data of the tool and the structure model data of the work overlap, the overlapping area is deleted from the structure data model of the work, The structure data model may be updated.

According to the present invention, in a three-dimensional model of a machine tool, model data of a cable, a pipe, etc. connected to an arbitrary structure such as a jig is generated, and a structure (a structure in which the cable, the pipe, etc. are installed) is generated. For example, how the structures such as cables and pipes in the machine tool are associated with the movement and rotation of the structures (for example, jigs) in which the cables and pipes are installed by associating with the model data of the jigs). It is possible to provide a three-dimensional model creation device capable of defining whether to move or rotate by changing to.

It is a block diagram which shows the hardware constitutions of the principal part of the three-dimensional model production apparatus which concerns on embodiment. It is a block diagram which shows the function structure of CPU in the three-dimensional model creation apparatus which concerns on embodiment. It is a figure which shows an example of the cable structure which concerns on embodiment. It is a figure which shows an example of movement of the cable structure which concerns on embodiment. It is a figure which shows an example of the position corresponding data which links|relates the moving position of the three-dimensional data which concerns on the cable structure which concerns on embodiment, and the moving position data of a to-be-connected structure. It is a figure which shows an example of the change of the interference area|region before a workpiece processing and after a workpiece processing based on a rigid model. It is a figure showing an example of a change of a tool course before work processing and after work processing based on a rigid model. It is a flow chart which shows a flow of three-dimensional model creation concerning a cable structure which is a non-rigid model by a three-dimensional model creation device concerning an embodiment.

Below, an example of the configuration of a three-dimensional model creating apparatus for realizing the present invention will be shown.
FIG. 1 is a schematic hardware configuration diagram showing a main part of a three-dimensional model creation device according to an embodiment. The three-dimensional model creation device 1 according to the present embodiment can be implemented in, for example, a numerical control device. Further, the three-dimensional model creation device 1 according to the present embodiment can be implemented as, for example, a personal computer attached to a machine tool. Furthermore, the three-dimensional model creation device 1 according to the present embodiment can also be implemented as, for example, an interference check device provided alongside a machine tool. FIG. 1 shows an example of the hardware configuration of a three-dimensional model creation device 1 implemented as a personal computer.

The three-dimensional model creation device 1 is mainly composed of a processor 10. The respective constituent elements of the three-dimensional model creation device 1 are connected via a bus 17, and exchange data with each other via the bus 17. The processor 10 controls the entire three-dimensional model creation device 1 according to the system program stored in the ROM 11. EPROM, EEPROM, or the like is used as the ROM 11.

A DRAM or the like is used as the RAM 12, and temporary calculation data, display data, input/output signals, etc. are stored therein. The non-volatile storage unit 13 is a non-volatile storage area, and may be, for example, a flash memory, a hard disk drive, or the like.
The non-volatile storage unit 13 includes, for example, a three-dimensional model storage unit 131 described below.

The machine operation panel 18 is arranged on the front surface of the three-dimensional model creation device 1 or the like, and displays data and graphics required for the operation of the three-dimensional model creation device 1, manual operator's manual operation input, data input, etc. The acceptance is used for the operation of the three-dimensional model creation device 1. The graphic control circuit 19 converts a digital signal such as numerical data and graphic data into a raster signal for display and sends it to the display device 20, and the display device 20 displays these numerical values and graphics. A liquid crystal display device is mainly used as the display device 20.

The input device 21 is composed of a keyboard including key switches, rotary switches, numerical keys, symbolic keys, character keys and function keys, and a pointing device such as a mouse.
The touch panel 22 has a function of detecting an operation such as a touch or a drag by an operator. The touch panel 22 is arranged so as to be superimposed on the screen of the display device 20, and the touch panel 22 detects an operation performed by a worker on a software key, a software button, or a software switch displayed on the screen of the display device 20. You can The touch panel 22 and the display device 20 may be combined into one device.

The communication unit 23 performs data communication with a numerical control device, an interference check device, a cell computer, a host computer, etc. via a wired/wireless network. The three-dimensional model data created by the three-dimensional model creating device 1 is transmitted to the numerical controller via the communication unit 23, for example.

The interface 14 is an interface for importing the data obtained by imaging or measuring with the sensor 100 into the three-dimensional model creation device 1.
As the sensor 100 as the three-dimensional data acquisition unit, any sensor can be used as long as it can acquire data for creating a three-dimensional model. As the sensor 100, for example, a camera, a distance sensor, or the like can be used, and more preferably, an image to be captured and an image capturing position for each pixel of the image, such as a three-dimensional range image camera or stereo vision. Anything that can obtain the distance from can be used.

FIG. 2 is a block diagram showing a functional configuration of the CPU 11 in the three-dimensional model creation device 1.
The CPU 11 includes a movement data acquisition unit 101, a position correspondence data generation unit 102, and a three-dimensional model storage unit 103.
Each of these functional units is realized by the CPU 11 executing the system program stored in the ROM 12, as described above. In addition to the above functions, the CPU 11 has various functions of creating a three-dimensional model including a structure that constitutes a machine tool, particularly a tool, a work, a jig that holds the work, and the like, as mentioned in the background art. However, for example, as described in Patent Documents 1 to 3, it is known to those skilled in the art, and detailed description and illustration thereof will be omitted.
For example, a three-dimensional model of the tool, the work, and the jig may be created from data obtained by imaging or three-dimensionally measuring the tool, the work, and the jig on which the work is mounted by the sensor 100 described later. . At that time, any method may be used as long as it is a method capable of creating a three-dimensional model based on image data, such as a known visual volume intersection method and a stereo matching method.

The movement data acquisition unit 101 relates to the cable structure while moving the structure to which the cable structure is connected (hereinafter also referred to as “connected structure”) in each axial direction of the machine tool, for example, in parallel or rotationally. The sensor 100 is made to acquire three-dimensional data.
FIG. 3 shows an example of the cable structure. FIG. 4 shows an example of movement of the cable structure. The movement data acquisition unit 101 will be described with reference to FIGS. 3 and 4.

More specifically, the movement data acquisition unit 101 acquires three-dimensional data by applying a so-called motion capture technique.
FIG. 3 is a conceptual diagram for explaining the outline of the optical motion capture technique. Reference numeral 301 is a machine tool including a cable structure (cable, piping, etc.), 302 is a spindle, 303 is a tool set on the spindle, 304 is a work, 305 is a structure to be connected, for example, a jig, 306 is a processing table, Reference numerals 307 denote cable structures, respectively. Although not shown, the other end of the cable structure 307 is fixed on the machine tool.
A plurality of markers (marks/markers) 308 are attached to the surface of the cable structure 307 at regular intervals in the length direction (for example, at intervals of 50 mm). The marker 308 is, for example, a hemispherical object made of a white plastic material, and is picked up as a bright bright spot on an optical image captured by the sensor 100 (for example, a three-dimensional camera, a stereo camera, a measurement sensor, etc.) not shown. Utilizing this, the three-dimensional coordinate value of each marker 308 when the cable structure moves along with the movement of the connected structure can be acquired. The camera coordinate system of the sensor 100 and the machine coordinate system of the machine tool are calibrated.
FIG. 4 shows a sensor acquisition image taken in by the sensor 100 from (a) before processing (before loading a work into a processing position) and (b) during processing in the horizontal direction (for example, the X direction). It can be seen that the markers 308 are displaced by the movement of the cable structure as the structure to be connected moves.
Similarly, images in the Y and Z directions are also captured using the sensor 100. When some of the markers 308 are hidden from the X, Y, or Z direction and are not visible, interpolation may be performed using the front and rear markers. Alternatively, a plurality of sensors 100 may be set in advance so that one of the sensors 100 can capture an image. By capturing an optical image using a sensor such as a three-dimensional camera, the three-dimensional coordinate value of each marker 308 can be acquired. Three-dimensional data of the cable structure is created based on the acquired three-dimensional coordinate values of each marker 308.
Since the cable structure (cable, piping, etc.) is not rigid, when the cable structure is replaced, it is necessary to remake the three-dimensional model of the cable structure.

The position-corresponding data generation unit 102 stores the movement position of the three-dimensional data relating to the cable structure and the movement position data of the connection target structure, which is acquired by the movement data acquisition unit 101, when the connection target structure is moved. To generate movement position correspondence data that associates with each other. FIG. 5 shows an example of position correspondence data that associates the movement position of the three-dimensional data relating to the cable structure with the movement position data of the connected structure.

J _n (x _jn , y _jn , z _jn ) (n is an integer of 0 or more. The same applies below) is represented by three-dimensional coordinates of the representative point of the connected structure (eg, jig) to which the cable structure is connected. This is the moving position of the connected structure. Further, C _nm (x _cnm , y _cnm , z _cnm ) is a moving position of the cable structure represented by the three-dimensional coordinates of each marker 308 of the cable structure C _n connected to the connected structure J _n. Is. Here, m represents a number sequentially given to each marker 308 from one end side of the cable structure 307. If the total number of markers 308 attached to the cable structure 307 is k, then 1≦m≦k.
J ₀ (x _j0 , y _j0 , z _j0 ) and C _0m (x _c0m , y _c0m , z _c0m ) are initial positions at the start of movement of the connected structure and the cable structure, respectively. Data shown in the same row in FIG. 5 are associated with each other. For example, at J ₁ (x _j1 , y _j1 , z _j1 ), the moving position C ₁₁ (x _c11 , y _c11 , z _c11 ), C ₁₂ (x _c12 , y _c12 ) of each marker 308 of the cable structure is located. z _c12 )),..., C _1k (x _c1k , y _c1k , z _c1k )) are associated.

More specifically, the position-corresponding data generation unit 102 acquires the position data (three-dimensional coordinate values) when the connected structure is moved from the data (for example, an optical image) captured by the sensor 100. The position data (three-dimensional coordinate value) of the cable structure can be associated.
Here, the three-dimensional coordinate value may be the three-dimensional coordinate system of the sensor 100. By calibrating the machine coordinate system and the three-dimensional coordinate system in advance, the position correspondence data can be converted into machine coordinate values. Further, the position correspondence data can be converted into an arbitrary three-dimensional coordinate system such as a work coordinate system that can be converted into a machine coordinate system.
The sensor 100 captures a large amount of data. For example, when the data is an optical image (image), each data can be identified by the frame number or the like attached to each image at the time of capture.

The three-dimensional model storage unit 103 stores a three-dimensional model including the three-dimensional data relating to the cable structure and the position correspondence data in the storage unit 13 (three-dimensional model storage unit 131).
More specifically, the three-dimensional model storage unit 103 includes three-dimensional data related to the cable structure, position correspondence data of the connected structure (jig) associated with the three-dimensional data, a work and a repair. The three-dimensional model of the ingredient is stored in the storage unit 13 (three-dimensional model storage unit 131).
The embodiment of each functional unit of the three-dimensional model creation device 1 of the present invention has been described above based on the configuration of the three-dimensional model creation device 1.

<3D simulation based on 3D model created by 3D creation device 1>
Next, a three-dimensional simulation based on the three-dimensional model created by the three-dimensional creation apparatus 1 will be described. The three-dimensional simulation is performed on the processing simulation device 2 (not shown). Here, the processing simulation device 2 can be mounted in, for example, a numerical control device. Further, for example, it can be implemented as a personal computer or the like that is attached to a machine tool.

As described above, since the intermediate portion of the cable structure is not fixed (not rigid), the cable structure moves greatly with the movement of the jig that is the connected structure. The above-mentioned Patent Document 3 discloses a method of checking whether or not the jig interferes with the tool during machining by a simulation before machining. In Patent Document 3, the simulation unit 11 operates the individual measurement model 18 of the workpiece (workpiece), the individual measurement model 19 of the jig, and the tool model 21 based on the numerical control information sent from the numerical control unit 10. Interference is detected (see paragraph [0023]). As described above, in Patent Document 3, the interference simulation is performed using a three-dimensional model (rigid three-dimensional model) that does not include a non-rigid portion such as a cable structure. However, even if the interference simulation is performed based on the three-dimensional model in advance before machining, the three-dimensional model does not include cables, pipes, etc., so that the workpiece or jig is not processed during the actual machining. May interfere with cables and piping.

On the other hand, the present invention is characterized by performing a three-dimensional simulation using a three-dimensional model including a cable structure that is not rigid. As described above, the three-dimensional model of the present invention is stored together with the three-dimensional data relating to the cable structure and the position correspondence data of the structure to be connected (for example, a jig), so that the moving position of the structure to be connected is stored. Accordingly, the three-dimensional data and position correspondence relating to the cable structure connected to the connected structure is called, the position of the cable structure is specified based on the called data, and the area where the cable structure interferes Can be calculated.

FIG. 6 shows an example of a change in the interference region before (A) workpiece machining and (B) during/after workpiece machining. A specific example of the interference simulation of the present invention will be described with reference to FIG.
FIG. 6A shows the shape of the work before processing. FIG. 6B illustrates a case where the work is cut, its shape is changed, and the interference region is changed during and after the work (cutting) of the work. When performing such interference simulation during and after cutting of a workpiece by referring to a conventional rigid three-dimensional model, the interference between the workpiece and the tool is ignored, the workpiece is machined, and a part of the workpiece is cut. Before the scraping, during the scraping, and after the scraping, it was calculated whether or not the jig and the tool interfere with each other. Therefore, by giving a three-dimensional model of the work or a three-dimensional model of the jig in advance, the three-dimensional measurement of the work and the jig attached to the machine tool together results in the area of the work and the jig. The three-dimensional model of the work and the three-dimensional model of the jig are individually created so that the areas can be distinguished. However, even if it was confirmed that the tool did not interfere with the jig at any stage, the cable structure sometimes interfered with the work or the jig when actually cutting.

On the other hand, in the present invention, since the interference simulation is performed with reference to the three-dimensional model including the non-rigid cable structure, whether or not the cable structure interferes with the work or the jig while cutting the work. Can be easily calculated and confirmed in advance. Specifically, a region in which a region where a work and a tool exist overlap with a region that interferes with a cable structure calculated according to the movement position of a structure to be connected is calculated by a known Boolean operation, and the overlapping region is calculated. If does not exist, no interference occurs. Further, in order to take into consideration the shape change of the workpiece during and after machining, when the structure model data of the tool and the structure model data of the work overlap at each stage during processing, the overlapping area is defined as the structure of the work. The interference check described above can be performed while deleting from the data model and updating the structure data model of the work.

As described above, the three-dimensional model created by the three-dimensional creation apparatus 1 is a machine tool in which a structure such as a cable or a pipe is associated with movement or rotation of a structure (such as a jig) to which a cable or a pipe is connected. By using the 3D model, it is possible to define not only jigs and works but also cables and piping connected to jigs by defining how they change, move and rotate. It is possible to realize a three-dimensional simulation that can more accurately and easily check the interference with.

<Tool path calculation based on the 3D model created by the 3D creation device 1>
Next, the automatic tool path generation for automatically calculating the tool rapid feed path that shortens the processing time based on the three-dimensional model created by the three-dimensional creation apparatus 1 will be described. The three-dimensional simulation is performed on the tool path automatic generation device 3 (not shown). Here, the tool path automatic generation device 3 can be mounted in, for example, a numerical control device. Further, for example, it can be implemented as a personal computer or the like that is attached to a machine tool.
For example, Patent Document 3 described above discloses a tool path automatic generation method in a rigid three-dimensional model. When actually machining a work, there are a case where the tool moves while accommodating the work and a case where the tool moves without machining (fast-forwarding the tool). In the automatic generation method of the tool path, A tool path including such a fast-forward command is generated.
As a method for calculating the tool rapid feed path (rapid feed path), a method for calculating the movement path so that the movement distance of the tool is minimized or a movement path for minimizing the number of times the tool is accelerated and decelerated is calculated. There is a method, etc., but in any case, it is necessary to prevent the tool from touching the work or jig when fast-forwarding.

FIG. 7 is a plan view of the work, and shows a case where the tool is fast-forwarded to a predetermined position before (A) work processing and (B) during and after work processing. In the conventional interference simulation referring to the rigid three-dimensional model, even if the result that the tool does not interfere with the work or the jig is calculated even if the tool is fast-forwarded as shown in FIG. 7B, it is actually fast-forwarded. The cable structure sometimes interfered with the work or jig. Therefore, it is not always possible to adopt the shortest route, and the route in which the tool tip largely detours the pre-machining workpiece during or after machining based on the pre-machining workpiece shape (for example, in FIG. 6A or As shown in FIG. 7(A), there is a case where the fast-forwarding path has to be used as a path that always keeps a constant distance from the outer circumference of the workpiece before machining. For this reason, the tool may be detoured more than necessary, resulting in unnecessary movement time.

On the other hand, in the present invention, since the interference simulation is performed by referring to the three-dimensional model including the non-rigid cable structure, whether or not the cable structure interferes with the work or the tool in advance while the tool is fast-forwarded. It can be calculated easily. For this reason, it is possible to easily find a fast-forward path that has a minimum movement distance and in which the cable structure does not interfere with the work or tool.

Further, even when the shape of the work changes as the cutting process progresses, the region where the structure model data of the tool and the structure model data of the work overlap with each other in each stage during the processing is defined as the structure data of the work. The shortest fast-forward path that the tool moves while removing the model and updating the structure data model of the work, while avoiding the work, with the minimum movement distance, and without the cable structure interfering with the tool or the work. Since it is possible to calculate, it is possible to easily obtain a fast-forward path that shortens the processing time as compared with the related art. For example, as shown in FIG. 7(B), after a part of the work is scraped off, it is easy to set the tool path that passes through the outer circumference of the work before machining in a plan view to be a rapid feed path. It can be seen that the moving time during fast-forwarding is shortened and the processing time is shortened.

As described above, the three-dimensional model created by the three-dimensional creation apparatus 1 is a machine tool in which a structure such as a cable or a pipe is associated with movement or rotation of a structure (such as a jig) to which a cable or a pipe is connected. It is possible to acquire a three-dimensional model of a workpiece that is cut away by machining by using the three-dimensional model by defining how it changes and moves or rotates within It is possible to calculate the shortest tool rapid feed path in which the tool does not interfere with the jig and the cable structure including the cable and/or the piping. As a result, the processing time can be shortened and the productivity can be improved.

Next, a flow of a series of processes in the three-dimensional model creation device 1 according to the embodiment of the present invention will be described with reference to FIG. FIG. 8 is a flowchart showing the flow of 3D model creation by the 3D model creation apparatus 1 according to the present embodiment.

Referring to FIG. 8, in step S<b>1, the movement data acquisition unit 101 causes the sensor 100 to move the cable structure while the connected structure to which the cable structure is connected is moved in parallel or rotationally in each axial direction of the machine tool. Three-dimensional data regarding the body, and three-dimensional data regarding the tool, the work, and the jig on which the work is mounted are acquired.

In step S2, a three-dimensional model of the cable structure and a three-dimensional model of the connected structure to which the cable structure is connected are created based on the acquired three-dimensional data.

In step S3, moving position correspondence data that associates the acquired moving position of the three-dimensional data relating to the cable structure with the moving position data of the connected structure when the connected structure is moved is generated.
In step S4, movement position correspondence data that associates the movement position of the three-dimensional data related to the cable structure with the movement position of the connected structure associated with the three-dimensional data, a three-dimensional model of the cable structure, and The three-dimensional model of the connected structure to which the cable structure is connected is stored in the storage unit 13 (three-dimensional model storage unit 131).

According to this embodiment, a predetermined structure (for example, a jig) of a machine tool, to which a cable structure including cables and/or pipes is connected, is moved in parallel or rotationally in each axial direction of the machine tool. However, for example, by acquiring three-dimensional data including the positions of a plurality of preset measurement points on a cable structure including cables and/or pipes by using a three-dimensional camera, a stereo camera, a measurement sensor, or the like, Defines how the structures such as cables and pipes change and move or rotate in the machine tool as the structures (eg jigs) installed such as cables and pipes move and rotate 3. A dimensional model can be easily created.
This makes it possible to more accurately and easily check interference not only with the jig or the work, but also with the cable or piping connected to the structure to be connected (for example, the jig).

Further, according to the present embodiment, it is possible to obtain a three-dimensional model of a workpiece that is scraped off by machining, and the shortest distance between the tool and the cable structure including the jig and the cable and/or the pipe does not interfere. The tool rapid feed path can be calculated. As a result, the processing time can be shortened and the productivity can be improved.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. In addition, the effects described in the present embodiment are merely enumeration of the most suitable effects resulting from the present invention, and the effects according to the present invention are not limited to those described in the present embodiment.

Each function of the three-dimensional model creation device is realized by software. When implemented by software, the programs that make up this software are installed in a computer. Further, these programs may be recorded on a removable medium and distributed to users, or may be distributed by being downloaded to a user's computer via a network.

1 3D Model Creation Device 10 Processor 101 Movement Data Acquisition Unit 102 Position Corresponding Data Generation Unit 103 3D Model Storage Unit 11 ROM
12 RAM
13 Non-volatile memory (memory)
14 Interface 18 Machine Control Panel 19 Graphic Control Circuit 20 Display Device 21 Input Device 22 Touch Panel 23 Communication Unit 100 Sensor 301 Machine Tool Including Cable Structure 302 Spindle 303 Tool Set on Spindle 304 Workpiece 305 Repaired Structure Tool 306 Processing table 307 Cable structure 308 Marker

Claims (5)

A three-dimensional model creating apparatus for creating a three-dimensional model of a structure including a work, a jig, and a tool attached to a machine tool,
A three-dimensional data acquisition unit for acquiring three-dimensional data including positions of a plurality of preset measurement points on a cable structure including cables and/or pipes connected to a predetermined structure of a machine tool;
Causing the three-dimensional data acquisition unit to acquire three-dimensional data related to the cable structure while moving the structure to which the cable structure is connected in parallel or rotationally moving in each axial direction of the machine tool. A movement data acquisition unit,
A position correspondence data generation unit that generates position correspondence data that associates the three-dimensional data relating to the cable structure acquired by the movement data acquisition unit and the position data of the structure,
A three-dimensional model storage unit that stores a three-dimensional model including the three-dimensional data related to the cable structure and the position correspondence data in a storage unit;
A three-dimensional model creation device including. A machining simulation of a machining program is performed on a computer based on a three-dimensional model including three-dimensional data relating to the cable structure, which is created by the three-dimensional model creating apparatus according to claim 1, and a tool is thereby created. A processing simulation apparatus for performing interference check between the structure of (1) and a structure including the cable structure. In the machining simulation of the machining program, when the tool structure model data and the work structure model data overlap, the overlapping region is deleted from the work structure data model to update the work structure data model. The processing simulation device according to claim 2. A machining simulation of a machining program is performed on a computer based on a three-dimensional model including three-dimensional data relating to the cable structure, which is created by the three-dimensional model creating apparatus according to claim 1, and a tool is thereby created. An automatic tool path generation device that calculates a tool rapid feed path that shortens the processing time by performing an interference check between the structure and the structure including the cable structure. In the machining simulation of the machining program, when the tool structure model data and the work structure model data overlap, the overlapping region is deleted from the work structure data model to update the work structure data model. The automatic tool path generation device according to claim 4.

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