JP6777516B2 - Information processing device - Google Patents

Description

The present invention relates to an information processing apparatus, and more particularly to an information processing apparatus having an interference check function by a program having a processing record.

In machine tools such as lathes and drilling machines, the workpiece is machined by controlling the tool to move relative to the workpiece. When creating a program for machining a workpiece on a machine tool, or when actually machining a workpiece based on the program, interference occurs between the structures, tools, workpieces, and jigs of the machine tool. You need to check if it happens. For example, as shown in FIG. 8, in a lathe device, a machine tool control device moves a tool by controlling the position of a tool post according to a program to process a workpiece that is gripped by a jig on a spindle and rotates. At that time, it is necessary to create a program so that the tool does not interfere with an obstacle such as a tailstock or a jig.

As an example of interference check, for example, in Patent Documents 1 and 2, it is possible to generate interference during machining by using three-dimensional shape data of machine tool structures, tools, workpieces, jigs, etc. that may interfere with each other. A technique for checking sex is disclosed.

Japanese Unexamined Patent Publication No. 2000-284819 Japanese Unexamined Patent Publication No. 2010-231737

When performing an interference check using the above-mentioned conventional technique, it is necessary to set the three-dimensional shape data in order to use the three-dimensional shape data of the object to be checked for interference. Further, the mechanism of interference check using three-dimensional shape data is often complicated. For example, when interference check is performed in parallel with actual machining based on a program, an information processing device (for example, numerical value) that performs the interference check is performed. There is a problem that a large load is applied to the control device).

Further, the interference check process itself is a machine tool having the same configuration due to the nature of the process in which the 3D shape data is arranged in the 3D space data and the moving space of the tool is virtually expressed. However, there is a problem that it is necessary to set the three-dimensional shape data shape of the machine tool structure, tools, workpieces, jigs, etc. for each machine tool each time.

Therefore, an object of the present invention is to provide an information processing device capable of checking interference generated between machine tool structures, tools, workpieces, jigs, etc. by simple processing.

In the present invention, among the programs executed in the past on a machine tool having the same configuration, a proven program in which no interference occurs between the structure, tools, workpieces, jigs, etc. of the machine tool is provided. Collect and identify non-interfering regions based on the tool path directed by the program. Then, when creating a new program for machining using a machine tool having the same configuration as the machine tool or performing machining, an interference check is performed using the non-interference region created as described above. By doing so, the work load for interference check and the load on the information processing device are reduced, and the above problems are solved.

The invention according to claim 1 of the present invention is an information processing apparatus that checks for interference generated in a machine tool controlled by the program based on the program, based on information related to the configuration of the machine machine. At least a moving space data creation unit that creates moving space data indicating the moving space of the axis of the machine tool and an existing non-interfering machining record used in the past for machining with a machine tool having the same configuration as the machine tool. A non-interference space identification unit that specifies a non-interference space from the movement space indicated by the movement space data based on one program, and a movement route that calculates a movement route based on the program to be checked for interference. An interference check processing unit that performs an interference check based on the calculation unit, the non-interference space specified by the non-interference space identification unit, and the movement path calculated by the movement route calculation unit, and the interference check result are output. An information processing device including an interference check result output unit.

In the invention according to claim 2 of the present invention, the moving space data creating unit creates moving space data including a plurality of lattice area data obtained by dividing the moving space of the axis included in the machine tool into a plurality of lattice areas. The information processing apparatus according to claim 1, wherein the non-interfering space specifying unit specifies a non-interfering space as a set of the lattice region data.

In the invention according to claim 3 of the present invention, the non-interfering space specifying unit specifies the lattice region data including at least one moving path by the program having a track record of non-interfering processing as a non-interfering space. The information processing apparatus according to claim 2.

In the invention according to claim 4 of the present invention, in the interference check processing unit, when the movement path calculated by the movement route calculation unit passes through a space other than the non-interference space specified by the non-interference space identification unit. The information processing apparatus according to any one of claims 1 to 3, which determines that interference may occur.

According to the present invention, it is not necessary to set a complicated interference check mechanism and three-dimensional shape data, and it is possible to easily perform an interference check using an existing program. Further, since the interference check can be performed using a relatively inexpensive information processing device such as a personal computer, it is possible to reduce the consumption of the processing time of the memory and the CPU of the numerical control device.

It is a figure which shows the example of making the moving space data by one Embodiment of this invention. It is a figure (1) which shows the example of specifying the non-interference region by one Embodiment of this invention. It is a figure (2) which shows the example of specifying the non-interference region by one Embodiment of this invention. It is a figure which shows the example of the movement path calculation of a tool tip point by one Embodiment of this invention. It is a figure which shows the display example of the interference check result by one Embodiment of this invention. It is a schematic functional block diagram of the information processing apparatus by one Embodiment of this invention. It is a figure explaining the application example of the information processing apparatus of this invention. It is a figure explaining the interference of a structure of a machine tool, a tool, a work, a jig and the like.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the concept of interference check processing of the information processing apparatus according to the embodiment of the present invention will be described with reference to FIGS. 1 to 5. The information processing apparatus according to the embodiment of the present invention creates moving space data in a memory by dividing the moving space, which is the range in which the tool moves, in a grid pattern when performing an interference check.
FIG. 1 shows an example of moving space data when the moving space in which the tool moves is divided into a grid pattern by straight lines parallel to the X-axis and the Z-axis, respectively. The moving space data can be defined by an array set of data (lattice area data) indicating the division width for each axis that divides the moving space and the coordinate position corresponding to the lattice area divided by the division width. For example, the lattice region data {i, j} has coordinates (i × dx, j × dz) and coordinates ((i + 1) × dx, (j + 1) × dz) as vertices, as shown at the bottom of FIG. The width in the X-axis direction is dx, the width in the Z-axis direction is dz, and each side corresponds to a rectangular region parallel to the X-axis or the Z-axis. The division width may be different for each axis, and may be set as an appropriate value according to the controllable movement unit of each axis. In FIG. 1, the moving space is regarded as a plane and the moving space data is created as a set of two-dimensional lattice region data for the sake of simplicity. However, in actual machining, the tool post is moved in the three-dimensional direction. When it is movable, the moving space data may be created as a set of three-dimensional lattice region data.

Next, the information processing apparatus of the present embodiment identifies a non-interfering region in the above-mentioned moving space based on an existing non-interfering processing-proven program. More specifically, the information processing apparatus of the present embodiment has a tool tip point (a position obtained by adding the tool length to the control point instructed by the program) based on an existing program having a proven track record of machining without interference. A movement path is created, and the lattice area corresponding to the lattice area data including the movement path when the created movement path is superimposed on the movement space data created above is specified as a non-interference region. The information processing apparatus of the present embodiment has an existing non-interfering machining record used in machining in a machine tool having the same configuration as the machine tool to be checked for interference in the machining performed in the past. Identify non-interfering regions based on a program with.
FIG. 2 shows an example in which each movement path by the three programs is superimposed on the movement space data. In FIG. 2, the grid region including the movement path by each program is represented by shading of different patterns. The region corresponding to this shaded grid corresponds to the region where interference did not occur even if the tool tip point passed in the past, and passes through the grid region when it is to be created or machined from now on. Even if the tip point of the tool is moved so as to be performed, it is estimated that interference does not occur with a high probability. Therefore, the information processing apparatus of the present embodiment specifies the grid region as a non-interference region.

The information processing apparatus according to the present embodiment may accept input of the shape of the work from the user. In such a case, the information processing apparatus according to the present embodiment treats the lattice region in which the work exists as an interference region.

The information processing device of the present embodiment may acquire an existing program having a processing record that does not interfere with the information processing device from, for example, a host computer connected via a network or the like, or is built in the information processing device. It may be acquired from a plurality of programs stored in advance in the storage device or the external storage device connected to the information processing device. In the information processing device of the present embodiment, it is possible to specify the non-interference region based on one program, but the non-interference region specified based on more programs is specified as the non-interference region. It is clear that the area tends to be wider.

The non-interfering region specified by the information processing apparatus according to the present embodiment can be defined as a subset of the lattice region data {i, j}, but the non-interfering region may be defined by a data structure that facilitates interference checking later. good. As an example, as shown in FIG. 3, the non-interference region is expressed in a format in which the subscript in the Z-axis direction is associated with the subscript in the X-axis direction of each grid region data constituting the non-interference region. There is. Note that the notation [k, l] in FIG. 3 indicates that all of the grid regions corresponding to the grid region data from the subscript k to the subscript l in the Z-axis direction are included in the non-interference region. There is.

After identifying the non-interfering region in the moving space, the information processing apparatus according to the present embodiment then performs an interference check on the created program or the program to be used for processing. The information processing apparatus according to the present embodiment creates a movement path of the tool tip point controlled by the program when performing an interference check of the program used for machining. Then, the interference check is performed by determining whether or not the movement path (including the lattice region including the movement path) when the created movement path is superimposed on the movement space data created above is included in the non-interference region. Then, when the entire movement path is included in the non-interference region, the information processing apparatus according to the present embodiment determines that the program can operate without interference. Further, when a part or all of the movement path is not included in the non-interference region, the information processing apparatus according to the present embodiment determines that interference may occur when the program is operated. To do.

When the information processing device of the present embodiment determines that there is a possibility of interference in the program to be checked as a result of the interference check, the user is notified by a sound, a lamp, an on-screen display, or the like. In addition to warning, the block corresponding to the movement path determined to cause interference in the program may be displayed, or the movement path outside the non-interference region may be displayed graphically. Further, as a result of performing an interference check in the information processing apparatus of the present embodiment during machining by the program, it is said that interference may occur in any of the movement paths of the tool tip point by the program. When it is determined, the user is warned by a sound, a lamp, an on-screen display, etc., and the movement of the tool is stopped to interrupt the machining, or the tip of the tool is placed in the grid area where interference is determined to occur. It may be controlled so that the moving speed of the tool becomes slow when the points approach each other or when the control point enters the grid region where it is determined that interference occurs.

When the information processing apparatus according to the present embodiment performs an interference check on the movement path of the tool tip point controlled by the program, it is determined whether or not each lattice region including the movement path is included in the non-interference region. However, for example, as shown in FIG. 4, the movement path is included in the form in which the subscript in the Z-axis direction is associated with the subscript in the X-axis direction of the grid region data including the movement path. A grid region may be represented and this may be compared with the data showing the non-interfering region illustrated in FIG. In FIG. 4, the notation [k, l] indicates that all of the grid regions corresponding to the grid region data between the subscript k and the subscript l include the movement path.

FIG. 5 shows an example in which the information processing apparatus according to the present embodiment displays the result of the interference check of the movement path on the screen of the information processing apparatus. As shown in FIG. 5, the information processing apparatus of the present embodiment superimposes the moving space data, the non-interference area in the moving space data, and the moving path of the interference check target and displays them on the screen, and deviates from the non-interference area. The movement route to be performed may be displayed so that the user can grasp it. As a display that allows the user to grasp the movement route that deviates from the non-interference area, the color of the corresponding movement route part is changed and displayed, or it is displayed with a display effect such as blinking or inversion. Is also good. Further, when the information processing apparatus according to the present embodiment displays the program as a result of the interference check of the movement path, the command block corresponding to the movement path passing through the lattice region other than the non-interference region is displayed in different colors. It may be displayed with a display effect such as blinking or inversion. Furthermore, the graphical display of these movement routes and the display of the program are displayed on the screen at the same time, and when the cursor or the like is focused on the relevant part of the program, the color of the movement route corresponding to the block is further changed. It is also possible to switch to a display with a display effect such as blinking / reversing.

Hereinafter, the configuration of the information processing apparatus that executes the above-mentioned interference check process will be described. Each functional means included in the information processing apparatus described below is realized by the operation of a CPU that controls a ROM, RAM, a non-volatile memory, various input / output devices, etc. included in the information processing apparatus.

FIG. 6 shows a schematic functional block diagram of the information processing apparatus according to the embodiment of the present invention. The information processing device 1 of the present embodiment includes a moving space data creation unit 100, a non-interference space specifying unit 110, a moving route calculation unit 120, an interference check processing unit 130, and an interference check result output unit 140.

The moving space data creating unit 100 creates the above-mentioned moving space data based on the information related to the machine tool stored in the machine configuration information storage unit 210 and stores it in the moving space data storage unit 220. The machine configuration information storage unit 210 contains configuration information including information on the type of machine tool to be checked for interference, the type of tool used in the machine tool, the type of jig, and the equipment that assists machining, and each axis. The movable range of is stored. The moving space data creating unit 100 creates moving space data based on the information related to the movable range of each axis among the information stored in the machine configuration information storage unit 210. The moving space data creation unit 100 may use the division width for each axis that divides a predetermined predetermined moving space for creating the moving space data, or the division for each axis that divides the moving space for the user. The width may be input via an input device or the like. Further, along with creating the moving space data, the user is made to set the range occupied by the work in the moving space as the information related to the work, and the information related to the set work is set in the moving space data storage unit 220 together with the moving space data. You may try to remember it.

The non-interference space identification unit 110 transmits from the program storage unit 2 an existing non-interfering machining record program in the machine machine having the same configuration information as the machine machine configuration information stored in the machine configuration information storage unit 210. The non-interference area on the moving space data stored in the moving space data storage unit 220 is specified based on the read and read program, and the information related to the specified non-interfering area is stored in the non-interference space storage unit 230. .. Here, the program storage unit 2 may be configured on the host computer (server) connected to the information processing device 1 via the network as described above, or the internal / external storage of the information processing device 1. It may be configured as a device. Further, the storage devices of a plurality of other machine tools connected via the network may be regarded as the program storage unit 2.

The movement route calculation unit 120 calculates a movement route controlled by the program 200 on the movement space data stored in the movement space data storage unit 220 based on the program 200 designated by the user.

The interference check processing unit 130 compares the non-interference space stored in the non-interference space storage unit 230 with the movement path calculated by the movement path calculation unit 120, and the movement path interferes with any configuration of the machine tool. Check for possibilities. When performing the interference check, the interference check processing unit 130 is operated so as not to perform the interference check on the range of the moving space occupied by the work based on the information related to the work stored in the moving space data storage unit 220. You may. By operating in this way, the interference check processing unit 130 can perform an interference check corresponding to a difference in the shape and size of the work.
Then, the interference check result output unit 140 outputs the result of the interference check by the interference check processing unit 130 by sound, lamp, screen display, signal output, and the like.

The information processing apparatus of the present embodiment having such a configuration does not perform the interference check based on the three-dimensional shape data as compared with the interference check method of the prior art, so that the precise interference check cannot be performed. On the other hand, a relatively inexpensive information processing device is used because it is not necessary to set the 3D shape data and the burden on the user can be reduced, and it is not necessary to perform complicated processing for handling the 3D shape data. Interference check is possible.

The information processing apparatus of the present invention can be mounted on a machining program editing device, a machining simulation device, a numerical control device, a personal computer connected to the numerical control device to assist machining, or another computer.
For example, as shown in the upper left of FIG. 7, the information processing apparatus of the present invention may be configured as a machining program editing apparatus, and in this case, the functions provided by the present invention can be utilized without preparing a particularly high-performance computer. can do.
Further, as shown in the upper right of FIG. 7, the information processing device of the present invention may be configured as a numerical control device / numerical control machine tool. In this case, control by a complicated program is performed on the numerical control device. Even during the process, it is possible to perform an interference check using the remaining time of each control cycle.

Further, as shown in the lower part of FIG. 7, the information processing apparatus of the present invention may be configured so that a personal computer or the like and a host computer operate in cooperation with each other. In the example below FIG. 7, a device having an interference check function such as a machining program editing device and a host computer function as one information processing device. In the example below FIG. 7, the host computer collects programs that do not generate interference from the machine tools A to C having the same machine configuration, stores them in the program storage unit 2, and stores the programs in the moving space of the machine tools. The non-interference space in is created in advance. The machining program editing device calculates the movement route controlled by the program by the movement route calculation unit 120 (not shown), and transmits the calculated movement route to the host computer. Then, the host computer checks the transmitted movement path based on the movement space data stored in the movement space data storage unit 220 and the non-interference space information stored in the non-interference space storage unit 230. I do. If such a configuration is adopted, it becomes possible to share moving space data and information on non-interference space related to machine tools having the same machine configuration as a whole, and it is possible to improve the efficiency of the system configuration.

Although the embodiments of the present invention have been described above, the present invention is not limited to the examples of the above-described embodiments, and can be implemented in various embodiments by making appropriate changes. ..
In the above-described embodiment, the grid region including the movement path of the tool tip point by the program executed in the past is simply defined as the non-interference region. For example, the distance between the movement paths by a plurality of programs is predetermined. If it is shorter than a predetermined threshold value, all the lattice regions between them may be defined as non-interference regions.

Further, although the correction value set in the machine tool or specified by the program is not particularly mentioned in the above, various correction values may be taken into consideration in the identification of the non-interference region and the calculation of the movement path. ..

1 Information processing device 2 Program storage unit 100 Moving space data creation unit 110 Non-interference space identification unit 120 Movement route calculation unit 130 Interference check processing unit 140 Interference check result output unit 200 Program 210 Machine configuration information storage unit 220 Moving space data storage unit 230 Non-interfering spatial storage

Claims (3)

In an information processing device that checks for interference that occurs in a machine tool controlled by a program based on the program.
A moving space data creation unit that creates moving space data indicating the moving space of the axis included in the machine tool based on the information related to the configuration of the machine tool.
A non-interfering space from the moving space indicated by the moving space data, based on at least one program that has been used for machining in the past with a machine tool having the same configuration as the machine tool and has a track record of non-interfering machining. Non-interference space identification part that identifies
A movement route calculation unit that calculates a movement route based on the program that is the target of the interference check,
Wherein the non-interfering space noninterference space identifying unit has identified, the have line interference check based on the moving path the moving path calculation unit has calculated, the movement path of the moving path calculation unit has calculated, the non-interfering space An interference check processing unit that determines that interference may occur when a specific unit passes through a space other than the specified non-interference space .
An interference check result output unit that outputs the result of the interference check,
Information processing device equipped with. The moving space data creating unit creates moving space data including a plurality of grid area data obtained by dividing the moving space of the axis included in the machine tool into a plurality of lattice areas.
The non-interfering space specifying unit identifies the non-interfering space as a set of the grid region data.
The information processing device according to claim 1. The non-interfering space specifying unit identifies the grid region data including at least one moving path by the program having a track record of non-interfering processing as a non-interfering space.
The information processing device according to claim 2.