JP2010108292A - System and method for preventing collision of machine tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a machine tool collision prevention system and the like which are applicable to any type of machining devices. <P>SOLUTION: When a predetermined decision start operation is performed at a machining device 2 by a user, the machining device 2 is operated in accordance with a decision start program P1 prepared in advance, thereby outputting to a relay apparatus 4 start trigger information as a collision decision start instruction together with state information of a machining section 21 and machining program information. When acquiring the start trigger information, the relay apparatus 4 outputs to a simulator 3 decision start information recognizable by the simulator 3 together with the acquired state information and machining program. The simulator 3, that acquires the decision start information, simulates a process, where a work is machined in accordance with a machining program corresponding to the acquired machining program information, on the basis of the acquired state information and decides whether or not a work part and a machine tool collide with each other during machining processing. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a tool collision prevention system and a tool collision prevention method for preventing a tool in a machining apparatus from colliding with a workpiece.

  In order to avoid collision between the tool of the processing device that processes the workpiece according to the processing program in which multiple codes are written and the workpiece to be processed, the workpiece can be created using commercially available or dedicated simulation software when creating the processing program. A simulation of the process of machining is conventionally performed. Such a simulation is a work in the manufacturing design department, and since it is not the site where the processing equipment is actually installed, it is difficult to reflect the actual work and tool status at the site, and setting to start the simulation Since all the values were manually input, the burden on the user was great, but in order to solve such a problem, measurement data obtained by measuring the state of tools and workpieces at the site was acquired by a predetermined measuring device, Methods for performing simulation based on measurement data are already known (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3).

JP 2008-112269 A JP 2006-102923 A JP 2007-48210 A

  However, since these tool collision prevention methods are premised on a configuration with a simulation function in the machining apparatus, the old type has no simulation function, can control only predetermined commands, and has no expandability. It is difficult to apply to this processing apparatus as it is.

  Therefore, an object of the present invention is to provide a tool collision prevention system and a tool collision prevention method that can be applied to any type of processing apparatus.

  The present invention solves the above-described problems by the following means. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.

  A tool collision prevention system (1) according to the present invention includes a machining device (2) for machining a predetermined workpiece by sequentially operating a tool according to a machining program in which a plurality of codes are described, and the workpiece is machined by the tool. A simulation apparatus (3) for performing a collision determination as to whether or not the tool collides with the work part including the work and a support part that supports the work by simulating the process based on the work program; A tool collision prevention system including a relay device (4) that receives data output from a processing device and inputs / outputs data to / from the simulation device, the processing device including the simulation device A memory for storing a judgment start program (P1) in which a code for judging the collision is described. When there is a predetermined determination start operation by a user, a processing unit (22) that is an area where the workpiece is installed and processed by the tool, and a predetermined determination start operation by the user is performed. An apparatus control unit (2), wherein the determination start program includes at least code for outputting status information indicating the current status of the machining unit including tool data relating to the tool to the relay device, and the workpiece Including a code for outputting machining program information relating to a machining program in which a series of codes for machining the machine is described to the relay device, and a code for outputting start trigger information serving as a trigger for starting the collision determination to the relay device When the relay device acquires the start trigger information from the processing device, the determination start information that can be recognized by the simulation device And a data relay unit (44) that outputs to the simulation apparatus together with the state information and the machining program information, and the simulation apparatus outputs the state output from the relay apparatus when the determination start information is acquired. A simulation execution unit (34) for simulating a process in which the workpiece is machined according to a machining program corresponding to the machining program information based on the information, and whether the workpiece unit and the tool collide in the simulation. The above-described problem is solved by having a collision determination unit (34) for determination and a determination result processing unit (34) for performing processing according to the determination result by the collision determination unit.

  According to the tool collision prevention system of the present invention, there is a determination start program in which a code for causing the relay device to output state information indicating the current state of the processing unit, processing program information, and start trigger information is provided in the processing device. When a determination start operation is performed by a user in advance, the apparatus control unit is configured to perform processing according to a determination start program. The data relay unit of the relay device uses the acquired start trigger information as a trigger, and outputs information necessary for simulation such as state information and machining program information together with the determination start information to the simulation device. Since the determination start instruction information can be set to information that can be recognized as information for the simulation device to start the collision determination, the simulation device starts the collision determination even if any start trigger information is output from the processing device. Can be made. Moreover, since the state information of the current processing portion in the processing apparatus is also acquired by the simulation apparatus, it is possible to perform a collision determination based on the actual state of the processing apparatus. There are many old types of processing devices that can recognize the state information of the processing unit held in advance but cannot set new functions and variables. According to the present invention, necessary information can be output by the simulation start program in the simulation device, and the necessary information can be provided by the relay device in a state that the simulation device can recognize. Thereby, even if it is an old-fashioned processing apparatus, determination of the collision prevention which reflected the present state of the said processing apparatus is attained.

  In the present invention, it is conceivable that the function of the relay device and the function of the simulation device are provided in independent configurations and the case where they are provided in the same configuration. In addition to the tool data, the state information indicating the state of the machining unit may be any information that the machining apparatus grasps as the state of the machining unit, such as a machine coordinate value or a workpiece coordinate value. “Tool data” includes tool type identification, tool correction knowledge information, and the like. The machining program information may be the machining program itself or information for specifying the machining program. In the case of information specifying a machining program, for example, the machining program is held by a relay device, a simulation device, or other program holding means, and the data relay unit or simulation execution unit specifies a machining program corresponding to the machining program information. What is necessary is just to comprise.

The “processing according to the determination result” by the determination result processing unit may be a known process, for example, a process for displaying a message notifying that a collision or no collision occurs on the monitor and / or for the notification. There are processes that generate sound. In the simulation in the simulation execution unit, a fixed value may be set in advance for the data related to the workpiece, or it may be configured to be input by the user before the simulation is executed, or another device such as a scanner. The simulation apparatus may be configured to acquire the information.

    The relay device includes a processing device holding unit (41a) that holds data output from the processing device, and a simulation device holding unit (41b) that holds data input and output between the simulation devices. The data relay unit holds the information acquired from the processing device in the processing device holding unit, and determines the state information and the processing program information held in the processing device holding unit. Along with the start information, the simulation apparatus outputs the determination start information, the state information, and the machining program information when detecting the determination start information in the simulation apparatus holding unit. You may have the data acquisition part (34) acquired from the holding | maintenance part for simulation apparatuses. According to the present invention, the data output from the processing apparatus and the data acquired by the simulation apparatus can be held completely separated and adjustment between the data can be performed by the data relay unit.

    The machining program information is machining program identification information for identifying the machining program, and the storage unit of the machining device further stores a machining program associated with the machining program identification information, and the relay device The data relay unit obtains a machining program corresponding to the machining program identification information of the machining device holding unit from the machining device, holds the machining program in the simulation device holding unit, and the data acquisition unit of the simulation device The machining program may be acquired from the simulation apparatus holding unit. Thereby, the processing program currently hold | maintained at the processing apparatus is acquirable. The machining program identification information may be information that can identify each machining program, such as information uniquely assigned to each machining program and a storage location.

    The relay device acquires work data related to the shape and position of a work installed in a work part of the processing device via a work data acquisition device provided in the processing device, and stores it in the simulation device holding unit. A work data acquisition unit for holding (44), and when the data acquisition unit of the simulation apparatus acquires the determination start information, the work data is acquired from the simulation apparatus storage unit; A process in which the workpiece is machined may be simulated based on the acquired workpiece data and the state information.

  As a result, even if the machining device is of a type that cannot recognize the workpiece data related to the shape and position of the workpiece, the workpiece data set for the machining device can be acquired by the workpiece data acquisition unit. The simulation based on the state of can be executed.

  The tool collision prevention method of the present invention includes a machining apparatus (2) for machining a predetermined workpiece by sequentially operating the tool according to a machining program in which a plurality of codes are described, and a process in which the workpiece is machined by the tool. From the machining device, a simulation device (3) that performs a collision determination as to whether or not the tool collides with the workpiece including the workpiece and a support portion that supports the workpiece by performing a simulation based on the machining program. A tool collision prevention method realized by a relay device (4) that receives output data and inputs / outputs data to / from the simulation device, wherein the workpiece is installed and processed by the tool The processing apparatus including the processing unit (21) that is a region to be processed includes at least tool data related to the tool. A code for outputting status information indicating the current state of the machining unit to the relay device, a code for outputting machining program information related to a machining program in which a series of codes for machining the workpiece are described, and the relay device; There is a storage unit (22) for storing a determination start program (P1) in which a code for outputting start trigger information serving as a trigger for starting the collision determination to the relay device is stored, and a predetermined determination start operation by the user And determination start information that can be recognized by the simulation apparatus when the relay apparatus obtains the start trigger information from the processing apparatus by functioning as an apparatus control unit (26) that performs processing according to the determination start program. Is output to the simulation device together with the state information and the machining program information (44) And when the determination start information output from the relay device is acquired, the simulation device is operated according to the processing program corresponding to the processing program information based on the state information output from the relay device. A simulation execution unit (34) that simulates a process of machining the workpiece, a collision determination unit (34) that determines whether or not the workpiece unit and the tool collide in the simulation, and the collision determination unit The above-described problem is solved by causing the function to function as a determination result processing unit (34) that performs processing according to the determination result of the above. The tool collision prevention method of the present invention is embodied as the tool collision prevention system of the present invention.

  As described above, according to the present invention, when there is a predetermined determination start operation by the user in the processing apparatus, the processing apparatus includes state information indicating the current state of the processing unit in accordance with a determination start program prepared in advance. Output start trigger information for starting collision determination together with information necessary for simulation including machining program information related to the machining program to the relay device, and when the relay device acquires start trigger information, along with determination start information that the simulation device can recognize, Information necessary for the simulation acquired from the processing apparatus is provided to the simulation apparatus. In the simulation device, when the determination start information is acquired from the relay device, the simulation is performed based on the information necessary for the acquired simulation, and it is determined whether or not the tool and the work part collide, so that any type of machining is performed. It is possible to provide a tool collision prevention system that can be applied to the apparatus.

  FIG. 1 is a diagram showing an example of a tool collision prevention system 1 according to the present invention. The tool collision prevention system 1 includes a processing device 2, a simulator 3, a relay device 4, and a scanner device 5. The processing apparatus 2 is a so-called NC machine tool that processes a workpiece, which is a workpiece, with a predetermined tool in accordance with a processing program in which a plurality of codes are described. Note that the machining apparatus 2 of the present embodiment is an old-type NC machine tool that is not a so-called open type. The simulator 3 is a simulation device that simulates a process in which a workpiece is machined by the machining device 2 and determines the presence or absence of a collision between a tool and a workpiece part during machining. The work part is a concept including a work and a support part on which the work is supported and a wall around the work.

  The relay device 4 is a device having a function of relaying data so that the simulator 3 functions as a simulation device mainly by data output from the processing device 2. In this embodiment, the relay device 4 is directly connected to the processing device 2 and is connected to the simulator 3 via a LAN. This configuration is suitable when one simulator is shared by a plurality of processing devices 2. The scanner device 5 is provided to acquire image information of a workpiece installed in a processing unit 21 described later in the processing device 2.

  The processing apparatus 2 displays, as a hardware configuration, a processing unit 21 that is a processing region where a workpiece is processed by a tool, an NC storage unit 22 for storing various data including programs, various messages, and various screens on a monitor. A monitor unit 23, an operation input unit 24 for receiving user input, a data output unit 25 for outputting data to the simulator 3, and an NC control unit 26 as an apparatus control unit. The NC control unit 26 controls the operations of the units 21 to 25 in accordance with codes described in a predetermined machining program. The NC storage unit 22 corresponds to machining program information for identifying a machining program in which a machining start program P1 for starting the collision judgment of a tool and a plurality of codes for actually machining a workpiece are described. Attached and memorized. Details of the determination start program P1 will be described later.

  Since the simulator 3 functions as a hardware configuration, the data input / output unit 31 for inputting / outputting data to / from the relay device 4, the monitor unit 32 for displaying various messages on the monitor, and the simulation device of the present invention. A simulator storage unit 33 and a simulator control unit 34 for storing various data including the program. The simulator control unit 34 includes a CPU and storage areas such as RAM and ROM necessary for its operation, functions as a computer based on a program stored in the simulator storage unit 33, and operates the units 31 to 33 of the simulator 3. To control. The simulation in the simulator 3 may employ a known simulation program. That is, the simulator 3 may be, for example, a known personal computer in which a known simulation program functions. In this embodiment, the simulator storage unit 33 stores in advance a machining program to be simulated in association with machining program information for identifying a machining program.

  The relay device 4 has, as a hardware configuration, a data input / output unit 41 that acquires data from the processing device 2 and the scanner device 5 and outputs the data to the simulator 3, and a monitor unit for displaying various messages on the monitor 42, a relay storage unit 43 in which various data and programs are stored, and a relay control unit 44. The relay control unit 44 includes a CPU and storage areas such as RAM and ROM necessary for its operation, functions as a computer based on a program stored in the relay storage unit 43, and operates the units 41 to 43 of the simulator 3. To control.

  The data input / output unit 41 includes a processing device holding unit 41 a that holds data acquired from the processing device 2, and a simulator holding unit 41 b that holds data provided to the simulator 3. The relay device 4 absorbs the difference in data recognition between the processing device 2 and the simulator 3 using the processing device holding portion 41a and the simulator holding portion 41b. In order to cause the relay device 4 to operate such a function, for example, there is a method of adopting ORiN (registered trademark) as middleware.

  The relay device 4 further acquires the image information of the workpiece set in the machining unit 21 of the machining device 2 from the scanner device 5, generates workpiece data regarding the shape and position of the workpiece, and holds the workpiece data in the simulator holding unit 41 b. . A conventionally known method may be adopted as a method for acquiring image information of a workpiece by the scanner device 5 and a method for generating workpiece data.

  An example of the determination start program P1 stored in the NC storage unit 22 of the machining apparatus 2 is shown in FIG. The program code 51 is an identification code of the determination start program P1. The tool data output code 52 is a code for outputting tool data indicating a tool type and a correction value set in the machining unit 21 to the machining device holding unit 41a of the relay device. The machining program information output code 53 is a code for outputting machining program identification information for identifying a machining program to the machining apparatus holding unit 41a. Thus, the determination start program P1 is prepared for each machining program.

  The machine coordinate value output code 54 is a code for outputting the current machine coordinate value to the processing apparatus holding unit 41a. The workpiece coordinate value output code 55 is a code for outputting the current workpiece coordinate value to the machining apparatus holding unit 41a. The set completion information output code 56 sets set completion information indicating that the tool data to the current workpiece coordinate value (hereinafter referred to as “simulation data”) are set to the processing apparatus holding section 41a to the processing apparatus holding section 41a. This is the code to be output. The start trigger information output code 57 is a code for causing the processing device holding unit 41a to output start trigger information serving as a trigger for starting the execution of the collision determination. The tool data, the current machine coordinate value, and the current workpiece coordinate value function as “status information indicating the current machining unit state”, and are stored in the NC storage unit 22 of the machining apparatus 2, for example.

  A flow of processing performed when the collision determination is started in the processing apparatus 2 will be described with reference to the flowchart of FIG. Processing in the processing apparatus 2 is controlled by the NC control unit 26. First, in step S100, it is determined whether a determination start operation, which is an operation for starting a collision determination, has been performed by the user. If it is determined that there is no determination start operation, the process waits for a user operation. If it is determined that there is an operation, the process proceeds to step S110 to start the determination start program P1. When there are a plurality of types of machining processes, when accepting the determination start operation in step S100, for example, a list of machining processes is displayed on the monitor, and a specific machining process is selected by the determination start operation. What is necessary is just to comprise. In step S110 in this case, the determination start program P1 corresponding to the machining program for executing the selected machining process is activated.

  Hereinafter, steps S120 to S170 are processes according to the contents described in the determination start program P1, and the output destination of each data is the processing device holding unit 41a of the relay device 4. In step S120, the tool data of the tool currently set in the machining unit 21 is specified and output by the tool data output code 52. In step S130, machining program information is output by the machining program information output code 53. In step S140, the machine coordinate value output code 54 outputs the current machine coordinate value. In step S150, the workpiece coordinate value output code 55 outputs the current workpiece coordinate value. In step S160, the set completion information is output by the set completion information output code 56. Finally, in step S170, start trigger information is output by the start trigger information output code 57.

  Next, the flow of processing in the relay device 4 will be described according to the flowchart shown in FIG. Each process in the relay device 4 is controlled by the relay control unit 44. First, in step S200, it is determined whether or not simulator data has been acquired from the processing apparatus 2. The processing apparatus holding unit 41a is monitored, and when setting completion information is detected, it is determined that simulation data has been acquired. Next, in step S205, the tool data of the processing device holding unit 41a is output to the simulator holding unit 41b, and in step S210, the machining program information of the processing device holding unit 41a is output to the simulator holding unit 41b. .

  In step S215, the machine coordinate value and the workpiece coordinate value of the processing device holder 41a are output to the simulator holder 41b. In step S220, the acquired work data from the scanner device 5 is output to the simulator holding unit 41b. For the workpiece data, the image information of the workpiece set in advance in the machining unit 21 of the machining apparatus 2 is acquired via the scanner device 5, and the shape, scale, etc. of the workpiece is calculated and stored in the relay storage unit 43, for example. Just keep it. The relay control unit 44 controls the processing from the acquisition of the image information of the workpiece to the mechanism of the workpiece data. Thereby, the relay control unit 44 functions as a work data acquisition unit. In data step S225, it is determined whether or not the start trigger information exists in the processing apparatus holding unit 41a. When the start trigger information exists, the process proceeds to step S230, and the determination start information is output to the simulator holding unit 41b.

  The simulation is started in the simulator 3 by outputting the determination start information. From the simulator 3, simulation state information indicating the state of simulation and simulation is provided to the simulator holding unit 41b as appropriate. When the simulation is completed, a simulation result that occupies the simulation result is provided to the simulator holding unit 41b. In step S240, the simulation state information is referred to, and then it is determined in step S245 whether or not the simulation is completed. If the simulation does not end, the simulation waits. When the simulation is completed, the process proceeds to step S250, and the simulation result provided from the simulator 3 is referred to.

  In step S255, it is determined whether or not the simulation result is an error. If the determination is affirmative, the process proceeds to step S270, and a predetermined error display is displayed on the monitor of the monitor unit 42. Note that the error in this embodiment includes an error when simulation cannot be performed, as will be described later. If a negative determination is made in step S255, the process proceeds to step S260, where it is determined whether or not the simulation result is a collision. If an affirmative determination is made, the process proceeds to step S265, and a predetermined collision message is displayed on the monitor. If so, a predetermined normal end message is displayed on the monitor.

  The processing performed in the simulator 3 will be described with reference to the slow chart of FIG. First, when the determination start information is output to the simulator holding unit 41b in step S300, the determination start information is acquired. Thereafter, in step S310, simulation data and work data held in the simulator holding unit 41b are acquired. Subsequently, in step S315, the machining program to be simulated is specified by referring to the simulator storage unit 33 based on the obtained machining program information. If an error occurs in the process of step S310 or step S315, it is determined in step S320 that an error has occurred, and the process proceeds to step S365, where simulation state information indicating the end of the process and simulation results indicating the occurrence of the error are retained for the simulator. To the unit 41b.

  If no error has occurred in the process of step S310, the process proceeds to step S330, and a simulation is executed based on the acquired simulation data and work data. In step S340, the simulation state information indicating the simulation state is output to the simulator holding unit 41b. The simulation state information includes, for example, a code being processed in the machining program and the end of the process. The simulation state information is appropriately performed until the simulation process is completed. When the simulation process is completed, an affirmative determination is made in step S350, the process proceeds to step S360, and a simulation result indicating whether or not the tool collides with the work part is output to the simulator holding part 41b. If it is determined that the tool collides during the simulation, the simulation process may be forcibly terminated.

  The user can know the possibility of a collision in the processing to be started in the processing apparatus 2 by a message displayed on the monitors of the monitor units 32 and 42. When the collision message is displayed, the user can correct the machining program, for example, without starting the machining process for the machining apparatus 2. Thereby, the collision with the tool and workpiece | work part in a process can be avoided.

  The present invention is not limited to the form described above, and may be implemented in various forms. For example, the function of the relay device 4 may be included in the simulator 3. In that case, the simulator control unit 34 also functions as the relay control unit 44, and the data output by the simulator control unit 34 functioning as a data relay unit is provided to the simulator control unit 34 functioning as a simulation execution unit. This configuration is effective when a dedicated simulator 3 is connected to the processing apparatus 2.

  FIG. 7 shows a determination start program P1 ′ when the machining apparatus 2 is an open type in which a desired variable can be used. The program code 51 ′ corresponds to the program code 51, the tool data output code 52 ′ corresponds to the tool data output code 52, and the machining program information output code 53 ′ corresponds to the machining program information output code 53. The machine coordinate value output code group 54 ′ corresponds to the machine coordinate value output code 54, and the work coordinate value output code group 55 ′ corresponds to the work coordinate value output code 55. The set completion information output code 56 ′ corresponds to the set completion information output code 56, and the start trigger information output code 57 ′ corresponds to the start trigger information output code 57.

  Even if the processing device 2 is an open type, the processing in each of the processing device 2, the relay device 4, and the simulator 3 is the same, but without acquiring work data in advance, for example, the scanner device in step S220 5 may be configured to acquire image information of a workpiece and acquire workpiece data. Moreover, you may comprise so that the process program corresponding to the acquired process program information may be acquired from the processing apparatus 2 in step S315, without storing a process program in the simulator memory | storage part 33 previously. In addition, when the processing apparatus 2 is an open type, when the function of the relay apparatus 4 is configured to be included in the processing apparatus 2, the function of the relay apparatus 4 and the simulator 3 may be configured to be included in the processing apparatus 2. Conceivable.

  Furthermore, a tool information acquisition device for obtaining image information related to the tool may be provided in the same manner as the scanner device 5. The collision determination result of the simulator 3 may not only be displayed on the monitor but also printed out or a warning sound may be output.

The figure which shows an example of the tool collision prevention system of this invention. The figure which shows an example of the program for a determination start. The flowchart which shows the flow of the process in a processing apparatus. The flowchart which shows the flow of the process in a relay apparatus. 5 is a flowchart showing the continuation of the process of FIG. The flowchart which shows the flow of the process in a simulator. The figure which shows the example of the program for a determination start for open type processing apparatuses.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tool collision prevention system 2 Processing apparatus 3 Simulator 4 Relay apparatus P1 Judgment start program

Claims (5)

A machining apparatus for machining a predetermined workpiece by sequentially operating a tool according to a machining program in which a plurality of codes are described;
By simulating a process in which the workpiece is machined by the tool based on the machining program, it is determined whether or not the tool collides with the workpiece portion including the workpiece and a support portion that supports the workpiece. A simulation device;
A tool collision prevention system configured to receive data output from the processing device and to be configured with a relay device that inputs and outputs data to and from the simulation device,
The processing apparatus includes:
A storage unit for storing a determination start program in which a code for causing the simulation apparatus to perform the collision determination is described;
A machining section which is an area where the workpiece is installed and machined by the tool;
When there is a predetermined determination start operation by the user, a device control unit that performs processing according to the determination start program,
In the determination start program, at least a code for outputting status information indicating the current status of the machining unit including tool data related to the tool to the relay device and a series of codes for machining the workpiece are described. A code for outputting machining program information related to the machining program to the relay device, and a code for outputting start trigger information serving as a trigger for starting the collision determination to the relay device,
The relay device is
When the start trigger information is acquired from the processing device, the determination start information that can be recognized by the simulation device includes a data relay unit that outputs the state information and the processing program information to the simulation device,
The simulation apparatus includes:
When the determination start information is acquired, a simulation execution unit that simulates a process in which the workpiece is machined according to a machining program corresponding to the machining program information based on the state information output from the relay device;
In the simulation, a collision determination unit that determines whether or not the workpiece unit and the tool collide,
A tool collision prevention system, comprising: a determination result processing unit that performs processing according to a determination result by the collision determination unit. The relay device includes a processing device holding unit that holds data output from the processing device, and a simulation device holding unit that holds data input to and output from the simulation device.
The data relay unit holds the information acquired from the processing device in the processing device holding unit, and the state information and the processing program information held in the processing device holding unit, together with the determination start information, Output to the holding unit for the simulation device,
When the simulation apparatus detects the determination start information in the simulation apparatus holding unit, the simulation apparatus includes a data acquisition unit that acquires the determination start information, the state information, and the machining program information from the simulation apparatus holding unit. The tool collision prevention system according to claim 1. The machining program information is machining program identification information for identifying the machining program,
The storage unit of the processing device further stores a processing program associated with the processing program identification information,
The data relay unit of the relay device acquires a processing program corresponding to the processing program identification information of the processing device holding unit from the processing device, and holds the processing program in the simulation device holding unit,
The tool collision prevention system according to claim 2, wherein the data acquisition unit of the simulation apparatus acquires the machining program from the simulation apparatus holding unit. The relay device acquires work data related to the shape and position of a work installed in a work part of the processing device via a work data acquisition device provided in the processing device, and stores it in the simulation device holding unit. Has a work data acquisition unit to hold,
When the data acquisition unit of the simulation device acquires the determination start information, the work data is acquired from the simulation device holding unit,
The tool collision prevention system according to claim 2 or 3, wherein the simulation execution unit simulates a process in which the workpiece is machined based on the acquired workpiece data and the state information. A machining apparatus for machining a predetermined workpiece by sequentially operating a tool according to a machining program in which a plurality of codes are described;
By simulating a process in which the workpiece is machined by the tool based on the machining program, it is determined whether or not the tool collides with the workpiece portion including the workpiece and a support portion that supports the workpiece. A simulation device;
A tool collision prevention method realized by a relay device that receives data output from the processing device and inputs / outputs data to / from the simulation device,
The processing apparatus including a processing unit that is an area where the workpiece is installed and processed by the tool,
At least code for outputting status information indicating the current status of the machining unit including tool data relating to the tool to the relay device, and machining program information relating to a machining program in which a series of codes for machining the workpiece are described. A storage unit for storing a determination start program in which a code to be output to the relay device and a start trigger information serving as a trigger for starting the collision determination is described to be output to the relay device;
When there is a predetermined determination start operation by the user, it functions as a device control unit that performs processing according to the determination start program,
The relay device;
When the start trigger information is acquired from the processing device, the determination start information that can be recognized by the simulation device functions as a data relay unit that outputs to the simulation device together with the state information and the processing program information,
The simulation device;
When the determination start information output from the relay device is acquired, the process of machining the workpiece according to the machining program corresponding to the machining program information is simulated based on the state information output from the relay device. A simulation execution unit;
In the simulation, a collision determination unit that determines whether or not the workpiece unit and the tool collide,
A tool collision prevention method, which functions as a determination result processing unit that performs processing according to a determination result by the collision determination unit.

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