JP7120894B2 - 3D model creation device, machining simulation device, automatic tool path generation device - Google Patents

Description

The present invention relates to a three-dimensional model creating apparatus for creating three-dimensional model data of a structure that constitutes a machine tool.

Conventionally, in a machine tool, a structure, particularly a tool, a workpiece, and a workpiece are held by controlling a drive mechanism part constituting the machine tool by a numerical control device by executing a machining program appropriately created. It is configured to machine the work by causing relative movement with a jig or the like. Therefore, for example, if a newly created machining program contains a bug or the like, there is a possibility that the tool and the structural body such as a jig may interfere with each other.
Therefore, a three-dimensional model including the structures that make up the machine tool, particularly tools, workpieces, jigs that hold the workpiece, etc., is created in advance. By simulating with , it is confirmed in advance whether or not the tool and the structure such as the jig will interfere with each other.
However, cables, pipes, and the like are connected to jigs and the like, and the positions and shapes of these cables and pipes change depending on the positions of jigs and the like. Therefore, even if a three-dimensional model including structures that make up the machine tool, especially tools, workpieces, and jigs that hold the workpieces, is created in advance and a simulation is performed based on the three-dimensional model, If the three-dimensional model does not include cables, pipes, etc., the tool may interfere with the cables or pipes.

In this respect, as a technique for supporting the creation of a three-dimensional model, for example, in Patent Document 1, a structure constituting a machine tool is imaged from the X-axis, Y-axis, and Z-axis directions by two cameras, and image data is obtained. is generated, and three-dimensional shape data of a structure is generated based on each image data. Further, Japanese Laid-Open Patent Publication No. 2002-200000 discloses a technique of detecting each shape from an image when a chuck and a workpiece are not mounted and an image when the chuck and the work are mounted on a lathe, and calculating an interference area. Further, Patent Literature 3 discloses a technique for generating an individual model of a jig based on a three-dimensional model of the work and data obtained by integrally measuring the shapes of the work and the jig by three-dimensional measurement.

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

However, none of the three-dimensional models of Patent Documents 1 to 3 includes a three-dimensional model related to cables and pipes connected to jigs, for example. For this reason, even if simulation is performed based on any three-dimensional model, since none of the three-dimensional models include cables, pipes, etc., there is still a possibility that the tool will interfere with the cables and pipes. .
Therefore, by simulating, for example, a newly created machining program on a computer using a three-dimensional model, tools, structures such as jigs, cables and pipes connected to jigs, etc. In order to confirm in advance whether or not interference will occur, model data such as cables and pipes connected to structures such as jigs should be created as a 3D model. model data and model data of a structure (for example, a jig) in which the cables and pipes are installed must be associated with each other. Furthermore, when simulating a processing program based on a three-dimensional model including model data of structures such as cables and pipes, movement and rotation of structures (e.g. jigs) in which the cables and pipes are installed Along with this, it is necessary to define how structures such as cables and pipes change, move, and rotate within the machine tool.

In a three-dimensional model of a machine tool, the present invention generates model data of cables, pipes, etc. connected to arbitrary structures such as jigs, and structures (for example, jigs) in which the cables, pipes, etc. are installed. and model data of the cables and pipes), and how the structures such as cables and pipes change in the machine tool according to the movement and rotation of the structure (e.g. jig) where the cables and pipes are installed. It is an object of the present invention to provide a three-dimensional model creation device capable of defining whether to move or rotate by

(1) The present invention is a three-dimensional model creation device (for example, a "three-dimensional model creation device 1" described later) that creates a three-dimensional model of a structure including a workpiece, a jig, and a tool attached to a machine tool. hand,
Three-dimensional data including the positions of a plurality of measurement points set in advance on a cable structure consisting 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, a “sensor 100” described later) to acquire,
causing the three-dimensional data acquisition unit to acquire three-dimensional data relating to the cable structure while moving the structure to which the cable structure is connected in parallel or rotationally 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 (for example, a position correspondence data generation unit 102 described later) that generates position correspondence data that associates the three-dimensional data related to the cable structure acquired by the movement data acquisition unit with the position data of the structure. ")When,
A three-dimensional model storage unit (for example, " 3D model storage unit 103 ″).

(2) Based on the three-dimensional model created by the three-dimensional model creation device described in (1) and including the three-dimensional data related to the cable structure, on a computer (for example, a "machining simulation device 2" described later) , a machining simulation of the machining program may be performed to check for interference between the structure of the tool and the structure including the cable structure.

(3) In the machining simulation of the machining program described in (2), if the structural model data of the tool and the structural model data of the workpiece overlap, the overlapping region is deleted from the structural data model of the workpiece, and the workpiece , the structure data model may be updated.

(4) Based on the three-dimensional model created by the three-dimensional model creation device described in (1) and including the three-dimensional data related to the cable structure, a computer (for example, the "automatic tool path generation device 3" described later) ) above, a machining simulation of the machining program is performed, thereby performing an interference check between the structure of the tool and the structure including the cable structure, thereby shortening the machining time. It may be calculated.

(5) In the machining simulation of the machining program described in (4), if the structural model data of the tool and the structural model data of the workpiece overlap, the overlapping region is deleted from the structural data model of the workpiece, and the workpiece , the structure data model may be updated.

According to the present invention, in a three-dimensional model of a machine tool, model data such as cables and pipes connected to arbitrary structures such as jigs are generated, and the structure ( (e.g., jigs) are associated with model data, and how the structures (e.g., jigs) in which the cables and pipes are installed are moved and rotated in the machine tool. It is possible to provide a three-dimensional model creation device that can define whether to move or rotate.

1 is a block diagram showing the hardware configuration of a main part of a 3D model creation device according to an embodiment; FIG. 3 is a block diagram showing the functional configuration of a CPU in the 3D model creation device according to the embodiment; FIG. 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 a movement of the cable structure which concerns on embodiment. It is a figure which shows an example of the position correspondence data which associates the moving position of three-dimensional data regarding a cable structure and the moving position data of a to-be-connected structure which concerns on embodiment. FIG. 5 is a diagram showing an example of a change in an interference area before and after workpiece machining based on a rigid model; FIG. 4 is a diagram showing an example of changes in tool paths before and after machining a workpiece, based on a rigid model; 4 is a flow chart showing the flow of creating a three-dimensional model of a cable structure, which is a non-rigid model, by the three-dimensional model creating apparatus according to the embodiment;

A configuration example of a three-dimensional model creating apparatus for realizing the present invention is shown below.
FIG. 1 is a schematic hardware configuration diagram showing a main part of a three-dimensional model creating apparatus according to one embodiment. The three-dimensional model creation device 1 according to this embodiment can be mounted on, for example, a numerical control device. Also, the three-dimensional model creation device 1 according to the present embodiment can be implemented as a personal computer or the like installed in a machine tool, for example. Furthermore, the three-dimensional model creation device 1 according to the present embodiment can also be implemented as an interference check device or the like that is installed together with a machine tool, for example. 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 configured around a processor 10 . Each component included in the three-dimensional model creating apparatus 1 is connected via a bus 17 and exchanges data with each other via the bus 17 . Processor 10 controls the entire three-dimensional model generating apparatus 1 according to a system program stored in ROM 11 . EPROM, EEPROM, or the like is used for this ROM 11 .

A DRAM or the like is used for the RAM 12, which stores temporary calculation data, display data, input/output signals, and the like. The nonvolatile storage unit 13 is a nonvolatile storage area, and may be, for example, a flash memory, a hard disk drive, or the like.
The nonvolatile storage unit 13 includes, for example, a three-dimensional model storage unit 131 which will be described later.

The machine operation panel 18 is arranged in front of the three-dimensional model creation apparatus 1 or the like, and is used to display data and figures required for the operation of the three-dimensional model creation apparatus 1, to manually input data by an operator, and to input data. It is received and used for the operation of the three-dimensional model creation device 1 . The graphics control circuit 19 converts digital signals such as numerical data and graphic data into raster signals for display and sends them to the display device 20, which displays these numerical values and graphics. A liquid crystal display device is mainly used for the display device 20 .

The input device 21 includes a keyboard having key switches, rotary switches, numeric 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 operations such as touch and drag by the operator. The touch panel 22 is superimposed on the screen of the display device 20, and the touch panel 22 detects operations performed by the operator on software keys, software buttons, and software switches displayed on the screen of the display device 20. can be done. Note that 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 creation device 1 is transmitted to the numerical controller via the communication unit 23, for example.

The interface 14 is an interface for importing data obtained by imaging or measuring with the sensor 100 into the three-dimensional model creating apparatus 1 .
Any sensor 100 may be used as the three-dimensional data acquisition unit 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 of an imaging target and an imaging position for each pixel of the image, such as a three-dimensional range image camera or a stereo vision camera. Anything that can acquire the distance from can be used.

FIG. 2 is a block diagram showing the functional configuration of the CPU 11 in the three-dimensional model creation device 1. As shown in FIG.
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 .
These functional units are 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 for creating a three-dimensional model including structures constituting a machine tool, particularly tools, workpieces, jigs for holding the workpieces, etc., as mentioned in Background Art. are known to those skilled in the art, for example, as described in Patent Literature 1 to Patent Literature 3, and detailed description and illustrations thereof will be omitted.
For example, a three-dimensional model of a tool, a work, and a jig may be created from data obtained by imaging or three-dimensionally measuring a tool, a work, and a jig to which the work is mounted using a sensor 100, which will be 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 stereo matching method.

The movement data acquisition unit 101 moves 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, parallel or rotationally, while moving the structure related to the cable structure. Three-dimensional data is acquired by the sensor 100 .
An example of a cable structure is shown in FIG. 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. FIG.

More specifically, the movement data acquisition unit 101 acquires three-dimensional data by applying so-called motion capture technology.
FIG. 3 is a conceptual diagram for explaining an overview of optical motion capture technology. 301 is a machine tool including a cable structure (cables, pipes, etc.), 302 is a spindle, 303 is a tool set on the spindle, 304 is a workpiece, 305 is a connected structure such as a jig, 306 is a processing table, 307 indicate cable structures respectively. Although not shown, the other end of the cable structure 307 is fixed in the machine tool.
A plurality of markers (marks/signs) 308 are attached to the surface of the cable structure 307 at regular intervals (for example, every 50 mm) in the length direction. The marker 308 is, for example, a hemispherical object made of white plastic material, and captured as a bright bright spot on an optical image captured by a sensor 100 (eg, a three-dimensional camera, a stereo camera, a measurement sensor, etc.) (not shown). Using this, it is possible to acquire the three-dimensional coordinate values of each marker 308 when the cable structure moves with the movement of the connected structure. It is assumed that the camera coordinate system of the sensor 100 and the machine coordinate system of the machine tool have been calibrated.
FIG. 4 shows sensor acquisition images taken by the sensor 100 from (a) before machining (before loading the workpiece to the machining position) and (b) during machining from the horizontal direction (for example, the X direction). It can be seen that each marker 308 is displaced as the cable structure moves with the movement of the structure to be connected.
Similarly, images in the Y and Z directions are also captured using sensor 100 . If some of the markers 308 are hidden from view in any of the X, Y, and Z directions, interpolation may be performed using the preceding and following markers. Also, by setting a plurality of sensors 100 in advance, any one of the sensors 100 may be used for imaging. Three-dimensional coordinate values of each marker 308 can be obtained by capturing an optical image using a sensor such as a three-dimensional camera. Based on the acquired three-dimensional coordinate values of each marker 308, three-dimensional data of the cable structure is created.
Since the cable structure (cables, pipes, etc.) is not rigid, when the cable structure is replaced, the three-dimensional model of the cable structure needs to be recreated.

The position correspondence data generation unit 102 generates the three-dimensional data movement position of the cable structure and the movement position data of the connected structure when the connected structure is moved, which are acquired by the movement data acquisition unit 101. Generate movement position correspondence data that associates . 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 equal to or greater than 0; hereinafter the same) is represented by three-dimensional coordinates of a representative point of a structure to be connected (for example, a jig) to which the cable structure is connected. is the movement position of the connected structure. Also, C _nm (x _cnm , y _cnm , z _cnm ) is the movement 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 assigned to each marker 308 from one end of the cable structure 307 . Assuming that the total number of markers 308 attached to the cable structure 307 is k, 1≤m≤k.
J ₀ (x _j0 , y _j0 , z _j0 ) and C _0m (x _c0m , y _c0m , z _c0m ) are the initial positions at the start of movement of the connected structure and the cable structure, respectively. Data written on the same line in FIG. 5 are associated with each other. For example, J ₁ (x _j1 , y _j1 , z _j1 ) includes displacement positions C ₁₁ (x _c11 , y _c11 , z _c11 )), C ₁₂ (x _c12 , y c12 , y _c12 , z _c12 )), . . . , C _1k (x _c1k , y _c1k , z _c1k )) are associated.

More specifically, the position correspondence data generation unit 102 obtains from the data (for example, optical image) captured by the sensor 100 the position data (three-dimensional coordinate values) when the connected structure is moved. Position data (three-dimensional coordinate values) of the cable structure can be associated.
Here, the three-dimensional coordinate values may be a three-dimensional coordinate system that the sensor 100 has. 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. Also, the position correspondence data can be converted into any three-dimensional coordinate system such as a work coordinate system that can be converted to and from the 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 a frame number assigned to each image at the time of capture.

The three-dimensional model storage unit 103 stores a three-dimensional model including 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 stores three-dimensional data related to the cable structure, positional correspondence data of the connected structure (jig) associated with the three-dimensional data, workpiece and jig. The three-dimensional model of the tool 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 .

<Three-dimensional simulation based on a three-dimensional model created by the three-dimensional creation device 1>
Next, a three-dimensional simulation based on a three-dimensional model created by the three-dimensional creation device 1 will be described. A three-dimensional simulation is performed on the machining simulation device 2 (not shown). Here, the machining simulation device 2 can be implemented in, for example, a numerical control device. Also, 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 as the jig, which is the structure to be connected, moves. The above-mentioned Patent Document 3 discloses a method of checking whether or not a jig interferes with a tool during machining by simulation before machining. In Patent Document 3, a simulation unit 11 operates an individual measurement model 18 of a workpiece (work), an individual measurement model 19 of a jig, and a tool model 21 based on numerical control information sent from the numerical control unit 10, Interference detection is performed (see paragraph [0023]). Thus, in Patent Document 3, interference simulation is performed using a three-dimensional model (rigid three-dimensional model) that does not include non-rigid portions such as cable structures. However, even if an interference simulation is performed based on a 3D model in advance before processing, the 3D model does not include cables, piping, etc., so it is possible that the work and jigs will not interfere during actual processing. It may interfere with cables and piping.

In contrast, the present invention is characterized by performing a three-dimensional simulation using a three-dimensional model including a non-rigid cable structure. As described above, the three-dimensional model of the present invention is stored together with the three-dimensional data related to the cable structure and the positional correspondence data of the connected structure (for example, a jig). Accordingly, the three-dimensional data and the positional correspondence of the cable structure connected to the connected structure are called, the position of the cable structure is specified based on the called data, and the area that interferes with the cable structure can be calculated.

FIG. 6 shows an example of changes in the interference area (A) before workpiece machining and (B) during and 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 workpiece before machining. FIG. 6B shows a case where the workpiece is cut during and after machining (cutting) of the workpiece, the shape of the workpiece changes, and the interference area changes. When performing such an interference simulation during and after cutting a workpiece with reference to a conventional rigid three-dimensional model, the interference between the workpiece and the tool is ignored, and the workpiece is machined and part of the workpiece is Whether or not the jig and the tool interfere with each other before being scraped off, while being scraped off, and after being scraped off is calculated. For this reason, by giving a 3D model of the work or a 3D model of the jig in advance, the work area and the jig can be determined from the results of 3D measurement of the work and the jig mounted on the machine tool. A three-dimensional model of the workpiece and a three-dimensional model of the jig are separately created so that the regions can be distinguished from each other. However, even if it is confirmed that the tool does not interfere with the jig at any stage, the cable structure sometimes interferes with the workpiece or the jig when actually cutting.

On the other hand, in the present invention, interference simulation is performed with reference to a three-dimensional model that includes a non-rigid cable structure. can be easily calculated and confirmed in advance. Specifically, the area where the cable structure interfering with the moving position of the structure to be connected overlaps with the area where the workpiece and the tool are present is calculated by a known Boolean operation or the like, and the overlapping area is calculated. does not exist, there is no interference. In addition, in order to consider the shape change of the workpiece during and after machining, when the structural model data of the tool and the structural model data of the workpiece overlap each other at each stage during machining, the overlapping area is defined as the structure of the workpiece. The interference check described above can be performed while deleting from the data model and updating the structure data model of the workpiece.

In this way, the three-dimensional model created by the three-dimensional creation apparatus 1 is a structure such as a cable or a pipe that is moved or rotated by a machine tool as the structure (for example, a jig) to which the cable or the pipe is connected moves or rotates. By defining how it changes, moves, and rotates inside, by using the 3D model, not only jigs and workpieces, but also cables and pipes connected to jigs It is possible to realize a three-dimensional simulation that can more accurately and easily check interference with.

<Tool Path Calculation Based on Three-Dimensional Model Created by Three-Dimensional Creation Device 1>
Next, automatic tool path generation for automatically calculating a tool rapid feed path that shortens the machining time based on the three-dimensional model created by the three-dimensional creating apparatus 1 will be described. A 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 on, for example, a numerical control device. Also, for example, it can be implemented as a personal computer or the like that is attached to a machine tool.
For example, Patent Literature 3 mentioned above discloses a method for automatically generating a tool path in a rigid three-dimensional model. When actually machining a workpiece, there are times when the tool moves while machining the workpiece, and times when it moves without machining (the tool is fast-forwarded). A tool path including such a rapid feed command is generated.
As a method of calculating the tool rapid traverse path (rapid traverse path), there is a method of calculating the movement path so as to minimize the tool movement distance, and a method of calculating the movement path so as to minimize the number of times the tool is accelerated and decelerated. There are other methods, but in any case, the tool must not touch the workpiece or jig when fast forwarding.

FIG. 7 is a plan view of the workpiece, and shows the case where the tool is rapidly fed to a predetermined position before (A) machining the workpiece and (B) during and after machining the workpiece. In an interference simulation that refers to a conventional rigid 3D model, even if the tool does not interfere with the workpiece or jig even if the tool is fast-forwarded as shown in Fig. 7(B), it is calculated that the tool does not interfere with the workpiece or jig. The cable structure sometimes interferes with the workpiece or jig. For this reason, the shortest path cannot always be adopted, and even during or after machining, based on the shape of the workpiece before machining, the tip of the tool largely bypasses the workpiece before machining (for example, the path shown in FIG. 6A). As shown in FIG. 7(A), there was a case where there was no other choice but to use the fast-forward path as a path that always keeps a constant distance from the outer periphery of the workpiece before machining. For this reason, the tool sometimes takes a detour more than necessary, resulting in wasted travel time.

On the other hand, in the present invention, interference simulation is performed with reference to a three-dimensional model including a non-rigid cable structure. can be easily calculated. Therefore, it is easy to find a rapid traverse path that has the smallest travel distance and does not interfere with the workpiece or tool with the cable structure.

Furthermore, even if the shape of the workpiece changes as the cutting process progresses, at each stage during machining, the region where the structural model data of the tool and the structural model data of the workpiece overlap is replaced with the structural data of the workpiece. The shortest rapid traverse path that the tool travels around the part with the minimum travel distance and without the cable structure interfering with the tool or the part, while deleting it from the model and updating the part structure data model. can be calculated, it is possible to easily obtain a rapid feed path that shortens the machining time compared to the conventional art. For example, as shown in FIG. 7B, after a part of the workpiece has been cut away, the tool path passing through the outer periphery of the workpiece before machining in plan view can easily be used as a rapid feed path. It can be seen that the movement time during rapid traverse is shortened and the machining time is shortened.

In this way, the three-dimensional model created by the three-dimensional creation apparatus 1 is a structure such as a cable or a pipe that is moved or rotated by a machine tool as the structure (for example, a jig) to which the cable or the pipe is connected moves or rotates. It is possible to obtain a 3D model of the workpiece that is scraped off by machining by using the 3D model by defining how it changes, moves, and rotates inside. It is possible to calculate the shortest tool rapid feed path that does not interfere with the tool and the cable structure composed of the jig and cables and/or pipes. As a result, the processing time can be shortened, contributing to productivity improvement.

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

Referring to FIG. 8, in step S1, the movement data acquisition unit 101 moves the connected structure to which the cable structure is connected in parallel or rotationally in each axial direction of the machine tool, while the sensor 100 detects the cable structure. Three-dimensional data relating to the body, and three-dimensional data relating to the tool, workpiece, and jig to which the workpiece is attached are acquired.

In step S2, based on the acquired three-dimensional data, 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.

In step S3, movement position correspondence data is generated that associates the acquired movement position of the three-dimensional data relating to the cable structure with the movement position data of the connection structure when the connection structure is moved.
In step S4, movement position correspondence data for associating the movement position of the three-dimensional data relating to the cable structure with the movement position of the connected structure associated with the three-dimensional data, the three-dimensional model of the cable structure, and A 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 the machine tool to which a cable structure composed of cables and/or pipes is connected is moved 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 measurement points preset on a cable structure composed of cables and / or pipes using a three-dimensional camera, a stereo camera, a measurement sensor, etc. It defines how structures such as cables and pipes change, move, and rotate inside the machine tool as the structures (e.g., jigs) where cables and pipes are installed move and rotate. Dimensional models can be easily created.
This makes it possible to more accurately and easily check interference with not only jigs and works, but also cables and pipes connected to connected structures (for example, jigs).

In addition, according to the present embodiment, it is possible to acquire a three-dimensional model of the workpiece that is scraped off by machining, and to provide the shortest possible distance that does not interfere with the tool, the cable structure composed of the jig, the cable, and/or the pipe. A tool rapid traverse path can be calculated. Thereby, the processing time can be shortened, which can contribute to the improvement of productivity.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. Moreover, the effects described in the present embodiment are merely enumerations of the most suitable effects resulting from the present invention, and the effects of 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 realized by software, the programs that make up this software are installed on the computer. These programs may be recorded on removable media and distributed to users, or may be distributed by being downloaded to users' computers via a network.

REFERENCE SIGNS LIST 1 3D model creation device 10 processor 101 movement data acquisition unit 102 position correspondence data generation unit 103 3D model storage unit 11 ROM
12 RAMs
13 non-volatile storage unit (storage unit)
14 interface 18 machine operation 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 jig which is a structure to be connected Tool 306 Processing table 307 Cable structure 308 Marker

Claims (5)

A three-dimensional model creation device for creating a three-dimensional model of a structure including a workpiece, a jig, and a tool attached to a machine tool,
a three-dimensional data acquisition unit that acquires three-dimensional data including the positions of a plurality of measurement points preset on a cable structure composed of cables and/or pipes connected to a predetermined structure of the machine tool;
causing the three-dimensional data acquisition unit to acquire three-dimensional data relating to the cable structure while moving the structure to which the cable structure is connected in parallel or rotationally 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 with the position data of the structure;
a three-dimensional model storage unit storing a three-dimensional model including the three-dimensional data and the position correspondence data relating to the cable structure in a storage unit;
A three-dimensional model creation device comprising: 3. Based on the three-dimensional model including the three-dimensional data related to the cable structure created by the three-dimensional model creation device according to claim 1, a machining simulation of a machining program is performed on a computer, whereby the tool and a structure including the cable structure. In the machining simulation of the machining program, if the structural model data of the tool and the structural model data of the workpiece overlap, the overlapping region is deleted from the structural data model of the workpiece, and the structural data model of the workpiece is updated. 3. The machining simulation apparatus according to claim 2. 3. Based on the three-dimensional model including the three-dimensional data related to the cable structure created by the three-dimensional model creation device according to claim 1, a machining simulation of a machining program is performed on a computer, whereby the tool and a structure including the cable structure to calculate a tool rapid feed path that shortens the machining time by performing an interference check. In the machining simulation of the machining program, if the structural model data of the tool and the structural model data of the workpiece overlap, the overlapping region is deleted from the structural data model of the workpiece, and the structural data model of the workpiece is updated. 5. The automatic tool path generation system according to claim 4.

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