WO2021005887A1

WO2021005887A1 - Machining management method and machining management system

Info

Publication number: WO2021005887A1
Application number: PCT/JP2020/019588
Authority: WO
Inventors: 靖佐野; 幸治内海; 一平河野
Original assignee: 株式会社日立製作所
Priority date: 2019-07-05
Filing date: 2020-05-18
Publication date: 2021-01-14
Also published as: JP6875461B2; JP2021012542A

Abstract

The present invention makes it possible to easily and appropriately maintain the machining accuracy of a machining tool. This machining management method is used by a cloud server 10 to manage a plurality of machining tools 20 that execute a machining program to perform a machining process, wherein the cloud server 10: (1) receives measurement information of components of the machining tools 20; (2) receives machining basic data which serves as a basis for generating the machining program to be executed by the machining tools 20; (3) generates the machining program on the basis of the machining basic data and the measurement information of a prescribed machining tool 20 among one or more machining tools 20; (4) transmits the generated machining program; and (5) transmits the component measurement information of the machining tools 20 to a machining tool manufacturer computer 41, which is a computer of a machining tool manufacturer.

Description

Machining management method and machining management system

The present invention relates to a technique for managing a machine tool that executes a machining program.

In recent years, by inputting a machining program to a machine tool, the workpiece (hereinafter sometimes referred to as a workpiece) may be machined.

Further, a technique of connecting a machine tool to a network and using a host computer (server) connected via the network is known.

For example, Patent Document 1 discloses a technique for reducing the maintenance cost of a machine tool by managing and maintaining each software and hardware on the host computer (cloud) side. Further, Patent Document 1 uses NC programs managed on a host computer (cloud), various correction data such as NC parameters and tool offset data, shared data such as ladders and PMC parameters, and machine-specific data. However, it is disclosed that pulse information, machine input control signal, screen input display information, and the like are generated as machine control information and transmitted to the machine tool side.

Japanese Unexamined Patent Publication No. 2016-71407

With the technique of Patent Document 1, the machine tool cannot automatically measure, and the information for confirming the state of the machine tool cannot be easily collected in the cloud server.
From another point of view, it has been difficult for the technique of Patent Document 1 to eliminate the decrease in processing accuracy due to the time course of the machine tool.
The present invention has been made in view of the above circumstances, and one of the purposes thereof is to promote easy collection of information for confirming the state of a machine tool, which cannot be automatically measured by the machine tool, in a cloud server. To do. Further, another object of the present invention is to support the elimination of a decrease in machining accuracy due to a change over time of a machine tool. Other objects of the present invention will become apparent thereafter.

The machining management method according to one viewpoint is a machining management method by a management computer for managing a plurality of machine tools that execute a machining program and perform machining processing, and the management computer is (1) a machine tool. It receives the measurement information of the components, (2) receives the basic machining data that is the basis for generating the machining program to be executed by the machine tool, and (3) receives the machining basic data of the predetermined machine tool in one or more machine tools. A machining program is generated based on the measurement information and basic machining data, (4) the generated machining program is transmitted, and (5) the measurement information of the components of the machine tool is sent to the machine tool manufacturer's computer. Send to the machine tool maker computer.
A management computer that manages a machine tool according to one aspect includes a storage module for storing a program and an arithmetic module. Here, the machine tool is a machine that has a stage that can move at least in the direction of the first axis and the direction of the second axis, and performs machining processing according to a machining program. Here, the first axis and the second axis are axes designated when describing the tool path by the machining program. Then, the management calculator receives (1) the first value regarding the rigidity value along the first axis with respect to the spindle of the machine tool, and (2) regarding the spindle of the machine tool with respect to the rigidity value along the second axis. The second value is received, and (3) the first value and the second value are displayed on the calculator connected to the management calculator.

According to the present invention, information for confirming the state of the machine tool can be easily collected in the cloud server. Further, according to the present invention, it is possible to support the elimination of the decrease in machining accuracy due to the time course of the machine tool.

FIG. 1 is an overall configuration diagram of a machining management system according to an embodiment. FIG. 2 is a block diagram of an example of a machine tool according to an embodiment. FIG. 3 is a diagram illustrating a process involving a processor and a designer according to an embodiment. FIG. 4 is a diagram illustrating a process involving a processor and a machine tool maker according to an embodiment. FIG. 5 is a diagram illustrating a process involving a processor and a tool maker according to an embodiment. FIG. 6 is a diagram showing an example of a measurement data input screen displayed on the processor computer according to the embodiment. FIG. 7 is a diagram showing an example of a processing request screen displayed on the designer computer according to the embodiment. FIG. 8 is a diagram showing an example of a rigidity value / browsing management screen displayed on the machine tool maker computer according to the embodiment. FIG. 9 is a flowchart showing an example of processing for generating a machining NC program according to an embodiment. FIG. 10 is a flowchart showing another example of the process of generating the machining NC program according to the embodiment. FIG. 11 is a diagram showing an example of a simulation model according to an embodiment.

The embodiment will be described with reference to the drawings. It should be noted that the embodiments described below do not limit the invention according to the claims, and all of the elements and combinations thereof described in the embodiments are indispensable for the means for solving the invention. Is not always. In the following examples, the machine tool 20 is described for a cutting machine, but it may be another machine tool in which a machining error may occur due to a change over time of the component.

<System configuration>
FIG. 1 is an overall configuration diagram of a machining management system according to an embodiment.

The machining management system 1 includes a cloud server 10 as an example of a management computer, a plurality of machine tools 20, one or more machine tools 28, one or more measurement modules 29, and one or more designer computers 31. It includes one or more machine tool maker calculators 41 and one or more tool maker calculators 51. The cloud server 10, the machine tool 20, the processor computer 28, the measurement module 29, the designer computer 31, the machine tool maker computer 41, and the tool maker computer 51 are connected via a network. The network may be a wired network or a wireless network.

In the present embodiment, the machine tool 20, the processor computer 28, and the measurement module 29 are managed and used by the processed product manufacturer 2 (also simply referred to as a processor) that processes the material to be processed (also referred to as a workpiece). It is a device to be used, and is installed in the factory of the processor 2. The number of processors 2 may be 1 or more. Further, the designer computer 31 is a computer managed and used by a processed product designer 3 (also simply referred to as a designer) who designs a processed product. The number of designers 3 may be 1 or more. Further, the machine tool maker computer 41 is a computer used by the machine tool maker 4 that manufactures the machine tool 20 arranged in the machine tool 2. The machine tool maker 4 may be 1 or more. Further, the tool maker computer 51 is a computer used by the tool maker 5 that manufactures a tool (for example, a cutting tool) to be mounted on the machine tool 20 arranged in the machine tool 2. The tool maker 5 may be 1 or more. The processor 2 and the designer 3 may be the same subject, or the machine tool maker 4 and the tool maker 5 may be the same subject. The designer 3 may be a person who designs the shape and specifications of the processing design, or may be a person who designs the processing process.

The cloud server 10 executes a process of integrating and managing the machine tool 20, the machine tool 28, the measuring module 29, the designer computer 31, the machine tool maker computer 41, and the cutting tool maker computer 51. The cloud server 10 is composed of, for example, a PC (Personal Computer) equipped with a processor, storage resources, and the like, and a general-purpose computer. The cloud server 10 includes a transmission module 11, a storage module 12, and an arithmetic module 13. The cloud server 10 may be owned by any of a machine tool maker, a tool maker, a processor, and a designer, but may be owned by a third party other than these. When the machine tool maker has the cloud server 10, it becomes easy to cooperate with the existing cloud server of the maker. When the cloud server 10 is owned by a third party, it is an independent service to a specific manufacturer, so that the merit of this embodiment can be provided even when the processor has machine tools of a plurality of manufacturers. If the cloud server 10 is owned by a third party, it will be an independent service for a specific manufacturer, reducing the risk for tool makers and machine tool makers to see the measured values of machine tool components by a specific manufacturer. can do.

The transmission module 11 is a communication I / F or the like that communicates with various devices connected via a network.

The storage module 12 includes storage resources such as a semiconductor memory, a flash memory, an HDD (Hard Disk Drive), an SSD (Solid State Drive), a volatile type memory, and a non-volatile type memory, and includes various information and calculations. Stores the program executed by module 13.

The arithmetic module 13 includes a processor and executes various processes by executing the program of the storage module 12. For example, the arithmetic module 13 calculates the rigidity value of the spindle of the machine tool 20 based on the measurement data of the machine tool 20 received via the transmission module 11. Here, the measurement information may include the measurement data and information (for example, a rigidity value) calculated based on the measurement data. Further, the arithmetic module 13 is processed by a specific machine tool 20 actually used for machining based on the basic machining data that is the basis for machining the product to be manufactured by executing the generation program described later. NC program (machining NC program: an example of machining program) is generated. Here, as the basic machining data, at least the shape data of the product to be manufactured (for example, CAD data) or the uncorrected NC program (uncorrected NC program) for the specific machine tool 20 used in the actual machining. Includes one. Further, the calculation module 13 executes a process of managing access from each computer to the measurement data of the machine tool 20 and the calculated rigidity value of the spindle by executing the management program described later.

The machine tool 20 is a machine that executes machining processing on the work. Details of the machine tool 20 will be described later.

The measurement module 29 is provided outside the machine tool 20, for example, and measures the components of the machine tool 20. In the present embodiment, the measuring module 29 exerts a force in a predetermined direction on a component of the machine tool 20 (for example, a spindle or a chuck. A tool or a holder may also be regarded as a component of the machine tool 20). By adding, a value that can specify the rigidity of the component (an example of rigidity information, for example, displacement) is measured. Specifically, the measurement module 29 measures the displacement of the spindle of the machine tool 20 by applying predetermined forces in the X-axis direction and the Y-axis direction of the stage 24 (see FIG. 2) described later. To do. From these displacements, the rigidity values of the spindle of the machine tool 20 in the X-axis direction and the Y-axis direction can be calculated. The rigidity of the accessory can be specified by applying a force in a predetermined direction to the accessory (for example, a tool) of the machine tool 20 as well as the component of the machine tool 20 with the measurement module 29. Value (for example, displacement) may be measured. Further, the measurement module 29 transmits the measured value (measurement data) obtained by the measurement to the cloud server 10 via the network. In this way, since the measurement module 29 measures and transmits the measured value to the cloud server 10, it is possible to reduce human labor for measurement. The object to be measured by the measuring module 29 may include at least one such as the temperature of the spindle of the machine tool 20, the temperature of the lubricating oil of the spindle, dirt, the remaining amount, and the rattling of the stage 24.

For example, the method of measuring the value that can specify the rigidity of the tool by the measuring module 29 is as follows.
* Fix the cutting edge or root of the tool and push the part that is not fixed with the specified force in the same way as a leaf spring. Then, the displacement at that time is measured.
In addition to the above method, the rigidity of the tool may be calculated based on the shape and material of the tool. Further, the value provided by the tool maker may be used for the time course of the rigidity of the tool.

The method of measuring the value that can specify the rigidity of the spindle by the measuring module 29 is as follows, for example.
* Fix a tool or rod whose rigidity is known to the spindle. Then, the position opposite to the fixed end of the tool or rod is pushed with a predetermined force, and the displacement at that time is measured. Then, the influence of the tool or rod is canceled from the measurement result, and finally the rigidity of the spindle is calculated. Instead of pushing with a predetermined predetermined force, a strain gauge may be attached to the tool or rod and the force when the tool or rod is pushed may be measured.
* Fix a tool or rod whose rigidity is known to the spindle. Then, the tool or rod is brought into contact with the stage (or a jig or work on the stage), and the force applied to the tool or rod is measured with a strain gauge. Then, after moving the stage by a predetermined amount, the force applied to the tool or rod is measured with a strain gauge. Then, the influence of the tool or rod is canceled from the measurement result, and finally the rigidity of the spindle is calculated.

In the following description, as the rigidity value, it is assumed that the higher the constant, the smaller the displacement when a predetermined force is applied, such as the spring constant [N / m]. However, other values may be used as the rigidity value. Further, a constant may be used as the rigidity value so that the higher the constant, the larger the displacement when a predetermined force is applied. The inventor has found that the rigidity of the structure of the workpiece, especially the rigidity of the spindle, changes with time depending on the load during the machining and the characteristics of the manufacturer, which affects the machining accuracy. By transmitting the rigidity of the spindle to the machine tool maker computer, the machine tool maker makes a maintenance proposal to the machine tool 20 processor (or owner) based on the change in machine tool accuracy due to aging. be able to.

The measurement module 29 may be provided inside the machine tool 20. Further, the measurement module 29 may not be able to directly transmit the measured value to the cloud server 10. For example, the measurement module 29 may display the measured value on a display unit (not shown). When displaying the measured value on the display unit in this way, the administrator of the computer 28 inputs the measured value displayed on the display unit to the measurement data input screen 60 (see FIG. 6) described later. In that case, the processor computer 28 may transmit the data to the cloud server 10. It is also conceivable that the measurement module 29 is provided outside the machine tool 20 and is manually installed on the machine tool 20 by a processor or the like to perform measurement. In the latter case, such installation and measurement work is complicated, so that the measurement frequency is reduced, or the maintenance staff of the machine tool 20 travels to the machine tool 20 for measurement. In order to improve such a situation, in the present embodiment, the basic processing data (for example, the shape data of the product to be manufactured (for example, CAD data) or the CAD data) or the processing basic data (for example, the shape data of the product to be manufactured) or An NC program that realizes high-precision machining is generated and provided to a processor based on an NC program that is not corrected for a specific machine tool 20 used in actual machining. This can provide an incentive to improve the measurement frequency by the measurement module 29 by the processor.

The processor computer 28 is composed of, for example, a PC (Personal Computer) equipped with a processor, storage resources, etc., and a general-purpose computer. The processor 28 receives input of various information from the administrator of the processor 28 and transmits the input contents to the cloud server 10. For example, the processor computer 28 displays the measurement data input screen 60, accepts the input of the measured value, and transmits the measured value to the cloud server 10. Further, the processor computer 28 displays the processing NC program for which the manufacturing request has been sent from the cloud server 10, receives the execution instruction of the processing NC program from the administrator, and transmits the processing NC program to the cloud server 10.

The designer computer 31 is composed of, for example, a PC (Personal Computer) equipped with a processor, storage resources, etc., and a general-purpose computer. The designer computer 31 displays a screen (processing request screen 70 (see FIG. 7), etc.) based on the data transmitted from the cloud server 10, receives various inputs from the administrator of the designer computer 31, and responds to the inputs. , Various information is transmitted to the cloud server 10. The details of the processing request screen 70 will be described later.

The machine tool maker computer 41 is composed of, for example, a PC (Personal Computer) equipped with a processor, storage resources, etc., and a general-purpose computer. The machine tool maker computer 41 displays a screen (rigidity value / viewing management screen 80 (see FIG. 8), etc.) based on the data transmitted from the cloud server 10, accepts various inputs from the administrator, and various types according to the inputs. Information is transmitted to the cloud server 10. The details of the rigidity value / viewing management screen 80 will be described later.

The tool maker computer 51 is composed of, for example, a PC (Personal Computer) equipped with a processor, storage resources, etc., and a general-purpose computer. The tool maker computer 51 displays a screen based on the data transmitted from the cloud server 10, receives various inputs from the administrator of the tool maker computer 51, and transmits various information to the cloud server 10 in response to the inputs.

The information transmitted from the cloud server 10 to the tool maker computer 51 includes, for example, the rigidity value of the spindle of the machine tool 20 in which the tool is used, the machining NC program, the material and shape of the work, and the model number of the tool. Information such as cutting time may be included. In the present embodiment, various information is transmitted to the tool maker computer 51 only when there is permission from an entity having the authority to manage various information. For example, the rigidity value of the machine tool 20 is transmitted to the tool maker calculator 51 and permitted only when the machine tool maker 4 of the machine tool 20 permits the tool maker 5 to transmit the rigidity value. If not, the transmission is rejected. As a result, it is possible to appropriately prevent various information from being passed on to the tool maker 5 and competing

makers

4 and 5 without permission. The permission may be given by the tool maker 5 or the processor 2 in addition to the machine tool maker.

Next, the data and the like stored in the storage module 12 of the cloud server 10 will be described.

<< Data, etc. >>
The storage module 12 includes a machine tool account table, a machine tool management table, a tool management table, a work information table, a machine tool maker management table, a tool maker management table, a machining NC program management table, and information provision rules. Stores a table, a generator, and a management program. The storage module 12 may store information other than this. The following paragraphs explain the details of each table and program. In addition, each information or some items of each information may be omitted.

The processor account table is a table for managing each processor, and includes each information shown below.
* ID that identifies the processor (processor ID).
* Password of the processor. This password is used to authenticate the processor on the cloud server 10.
* Processor name.
* Processor contact information. The contact information may include the telephone number of the processor or an email address.
* Address of the processor.

The machine tool management table is a table for managing each machine tool 20, and includes the following information.
* ID that identifies the machine tool (machine tool ID).
* Machine tool administrator ID (administrator ID). The manager of the machine tool may be the owner of the machine tool or the person who has the right to use the machine tool. In the present embodiment, the machine tool 2 corresponds to this. , The administrator ID becomes the processor ID.
* Installation location of machine tools.
* Measured value for machine tools. For example, a plurality of pairs of the measured value and the measured date and time may be included.
* Static value for machine tools. The static value includes, for example, the model number of the machine tool.
* Machine tool manufacturer name. However, for example, if the machine tool maker 4 can be specified by the model number or the machine tool ID, the machine tool maker name may not be required.

The tool management table is a table for managing the tools mounted on the machine tool 20, and includes the following information.
* Tool ID (tool ID).
* ID of the machine tool to which the tool is mounted.
* Tool model number.
* A value measured for a tool on a machine tool. For example, a plurality of pairs of the measured value and the measured date and time may be included.
* Tool maker name. However, for example, if the tool maker 5 can be specified by the model number or the tool ID, the machine maker name may not be required.
* Tool shape.

The work management table is a table for managing each work, and includes the following information.
* Work ID (work ID).
* Work material.
* Work shape (shape before cutting).
* Work cutting resistance.

The machine tool maker management table is a table for managing each machine tool maker 4, and includes the following information.
* Machine tool maker ID (machine tool maker ID).
* Machine tool manufacturer password. This password is used by the cloud server 10 to authenticate the machine tool maker.
* Threshold information about machine tool measurements. Here, as the threshold value, if the machine tool 20 of the machine tool maker 4 is the same, one threshold information may be used. For example, if the threshold information is different for each machine tool 20, the model number of the machine tool 20 may be used. It may be the corresponding threshold information.

The tool maker management table is a table for managing each tool maker 5, and includes the following information.
* Tool maker ID (tool maker ID).
* Tool maker password. This password is used by the cloud server 10 to authenticate the tool maker 5.

The machining NC program management table is a table for managing the generated machining NC program, and includes the information shown below.
* ID indicating the generation of machining NC program (machining NC program generation ID).
* Date and time information when the machining NC program was generated * Basic machining data used to generate the machining NC program.
* Generated machining NC program.

The information provision rule table is a table that manages permission for providing information, and includes the following information. In the present embodiment, it is shown that the provision of information of the contents registered in the information provision rule table is permitted.
* Information manager ID. The information manager is one or more of a processor, a machine tool maker, and a designer. Information managers differ depending on the type of information.
* ID of the information provider.
* Types of information that can be provided. For example, the rigidity value of the spindle of the machine tool 20 and the like.

Next, the machine tool 20 will be described in detail.

FIG. 2 is a configuration diagram of an example of a machine tool according to an embodiment.

<Machine tool>
Next, the machine tool 20 will be described in detail.

The machine tool 20 is, for example, a machining center, and includes a main body 22 that executes machining processing, a controller 21 that controls the machining processing of the main body 22, and a tool TL of one or more tool sets used in the main body 22. It includes a tool magazine 25 that can be accommodated. The machine tool 20 may be a lathe or a milling machine. Further, in the following description, the machining center will be described by taking a vertical shape as an example, but it may be applied to a horizontal machining center.

Each tool magazine 25 has a plurality of slots (SL: 25a, 25b, 25c) capable of accommodating one tool TL.

The controller 21 controls the machining process of the main body 22 and the tool replacement process according to the NC program stored inside.

The main body portion 22 includes a processing head portion 23, a stage 24, and a tool changing portion 26. The processing head portion 23 includes a spindle on which a tool TL can be mounted and which can be rotated. The processing head unit 23 may be the spindle itself. The stage 24 is movable on which the work W to be processed is placed. In the present embodiment, the stage 24 can move in two orthogonal directions (X-axis direction and Y-axis direction in FIG. 2), and the relative positional relationship between the work and the main axis can be changed. The tool changing unit 26 removes the tool TL from the processing head unit 23 and accommodates it in an empty slot of the tool magazine 25. Further, the tool changing unit 26 takes out the tool TL from the slot of the tool magazine 25 and attaches it to the processing head unit 23. An example of the tool changing unit 26 is a change arm (also called an ATC arm) of an automatic tool changing device (ATC). The NC program can internally describe a series of instructions (called a code or a word in which parameters are added to the code in the NC program terminology) meaning a tool change instruction, and the tool change instruction is described in the tool magazine 25. Contains a slot number that indicates the location of the slot (meaning later). The tool changing unit 26 takes out the tool TL from the slot specified by the slot number included in the parameter of the tool changing instruction according to the instruction of the NC controller 21 that has read the tool changing instruction, and attaches the tool TL to the processing head unit 23. In the NC program, the tool path in which the numerical values related to the X-axis direction and the Y-axis direction are specified is described. When describing the tool path, numerical values related to the Z axis and the rotation axis may be specified in addition to the X axis and the Y axis.

In the machine tool 20, the number of tool TLs that can be stored in the tool magazine 25 is limited, but one or more tool sets 27 are prepared in advance and stored in the tool magazine 25 according to the machining process to be executed. By exchanging the tool set to be used, various machining processes can be supported.

In the present embodiment, the tool TL includes a blade portion TLa such as an end mill, a drill, and a cutting tool for cutting the work W, and a holder TLb for mounting the blade portion TLa on the processing head portion 23. However, for example, when the cutting tool portion TLa can be mounted on the processing head portion 23 as it is, the holder TLb may not be included, and at least the cutting tool portion TLa may be included.

Next, the generation program executed by the calculation module 13 will be described.

<< Generation program >>

The generation program (strictly speaking, the processor that executes the generation program) contains the basic machining data and the latest rigidity (for example, X-axis) of the spindle of the machine tool 20 (selected machine tool) selected as the machine tool to be actually machined. It receives at least one of the rigidity in the direction and the rigidity in the Y-axis direction), and based on this information, generates a machining NC program on the selected machine tool. Here, in the spindle of the machine tool 20, the rigidity in the X-axis direction and the rigidity in the Y-axis direction may be different, and if a machining NC program is generated based on the stiffness in both directions, the machining accuracy is further improved. In addition to the rigidity of the spindle of the machine tool, at least one of the shape of the tool, the rigidity of the tool, the shape of the work before cutting, the shape after cutting, the cutting resistance of the material of the work, etc. are taken into consideration. An NC program may be generated. By doing so, it is expected that the processing accuracy will be further improved. The rigidity of the spindle may be measured in two orthogonal axes other than the X-axis and the Y-axis described above, but it is more preferable to measure the rigidity along the X-axis and the Y-axis. When the product shape is simple, the tool paths described by the NC program may have a relatively large number of tool paths along the X-axis and Y-axis directions. Therefore, if the rigidity of the spindle along the X-axis and the Y-axis is measured, the amount of correction can be easily calculated. Further, when the processor or the designer confirms the corrected processing program, it becomes easy to grasp the correction tendency.

For example, when an uncorrected NC program is acquired as machining basic data, the generation program sets the data obtained by changing or adding the instruction of the uncorrected NC program as the machining NC program. Note that the commands to be added or changed include tool diameter compensation, tool length compensation, tool wear compensation, feed speed, tool rotation speed, or cutting speed, which greatly increases the number of times the work W is machined by the tool TL. It may be avoided that the processing work is changed. However, an instruction (for example, an instruction corresponding to trial cutting) that increases the number of times the work W is processed may be added.

Further, in the generation program, when the description format of the uncorrected NC program is at least partially different from the description format for the controller 21 of the selected machine tool, the description format of the uncorrected NC program is different. , Converted to the description format for the controller 21 of the selected machine tool. As a result, the processing process can be performed without any trouble in the controller 21 of the selected machine tool.

In the machining NC program, the generation program includes the machine tool ID of the selected machine tool, the model number (or identifier) of each tool TL of the tool set specified to be used in the selected machine tool, and the arrangement of each tool TL as comments. The position information (slot number) may be described. For example, as a comment, "MC2: SL1: ML7x, ..." may be described. Here, MC2 is a machine tool ID, SL1 is a slot number, and ML7x is a model number of a mill. By referring to this comment, it is possible for the machining NC program to grasp which machine tool 20 is targeted and what kind of tool should be stored in which slot. Further, in the machining NC program, the use of each tool TL designated to be used and the arrangement position information of each tool TL may be described as comments. By adding such a comment, the amount of data of the machining NC program increases, but since it can always be managed integrally with the machining NC program, it is possible to reduce the mistaken use of the machine tool 20 and the tool TL that are not expected.

Further, when the generation program acquires the shape data (CAD data) of the product to be manufactured as the basic processing data, for example, in order to process the unprocessed workpiece into the product based on the three-dimensional shape data. Generate a machining NC program for. Any method may be used to generate a machining NC program based on 3D data (CAD data). For example, an uncorrected NC program that does not consider rigidity is generated based on 3D data. Then, similarly to the above, based on the latest rigidity of the selected machine tool, the instruction of the uncorrected NC program may be changed or added to generate the machining NC program on the selected machine tool.

In addition, the generation program registers the generated machining NC program in the machining NC program management table. Specifically, the generation program includes a machining program generation ID indicating the generation of the machining NC program, date and time information for generating the machining NC program, basic machining data used for generating the machining NC program, and the generated machining NC. Register the program in the machining NC program management table.

The generation program sends the machining NC program to the designer computer 31 after the generation process. Further, when the generation program receives a manufacturing request from the designer computer 31, the generation program transmits the corresponding processing NC program to the processor computer 28. Further, when the generation program receives the manufacturing instruction from the processor computer 28, the generation program transmits the corresponding machining NC program to the machine tool 20 targeted by the machining NC program. As a result, the machine tool 20 executes the machining process by executing the transmitted machining NC program. Here, since the machining NC program is an NC program generated in consideration of the latest rigidity of the machine tool 20, the product manufactured by machining can be made to have appropriate machining accuracy. From the viewpoint of giving the above-mentioned incentive, it is preferable to consider other factors such as the rigidity of the tool in addition to the rigidity of the spindle of the machine tool in this generation program. This is because when the processor wants to improve the measurement frequency regarding the rigidity of the spindle of the machine tool from a time when the change over time is small, the improvement in machining accuracy is small in the NC program generation considering only the rigidity of the spindle.

Next, the management program executed by the arithmetic module 13 will be described.

<< Management Program >>
The management program (strictly speaking, the processor that executes the management program) transmits the measurement data and the rigidity value of the machine tool 20 to the processor calculator 28 of the machine tool 20, but other It is controlled not to transmit to the processor computer 28 of the processor, that is, it is controlled to reject the transmission. As a result, it is possible to appropriately prevent the measurement data and the rigidity value information of the machine tool 20 from being passed on to other processors. In the present embodiment, the management program exceptionally transmits the information when it corresponds to the provision of the information registered in the information provision rule table.

Further, the management program transmits the measurement data and the rigidity value of the machine tool 20 to the machine tool maker computer 41 of the machine tool maker that manufactured the machine tool 20, but the machine tool maker computer of another machine tool maker. It is controlled not to transmit to 41, that is, to reject transmission. As a result, it is possible to appropriately prevent the measurement data and the rigidity value information of the machine tool 20 from being passed on to other machine tool makers. In the present embodiment, the management program exceptionally transmits the information when it corresponds to the provision of the information registered in the information provision rule table.

Further, the management program acquires threshold information for evaluating the rigidity value of the machine tool 20 from the machine tool maker computer 41. This threshold information can be acquired, for example, based on the input to the rigidity value / browsing management screen 80 (see FIG. 8). In addition, the management program stores the acquired threshold information in the machine tool maker management table. Further, the management program determines whether or not the latest rigidity value of the spindle of the machine tool 20 is lower than the threshold information of the machine tool maker management table, and the latest rigidity value of the spindle of the machine tool 20 is the machine tool maker. When it is determined that the value is lower than the threshold information of the management table, the rigidity of the machine tool 20 is lower than the threshold information and the machine tool 20 is determined with respect to the machine tool maker computer 41 of the machine tool manufacturer that manufactured the machine tool 20. Send the contact information of the managed processor. Here, when transmitting the contact information, the contact information may be transmitted as it is, or may be transmitted as display information (for example, a display image) for displaying the contact information. As a result, it is possible to appropriately notify the machine tool maker 4 that manufactured the machine tool 20 that the latest rigidity value of the spindle of the machine tool 20 has fallen below the threshold information, and the machine tool maker 4 can notify the machine tool maker 4. This can be dealt with.

Next, the processing operation by the machining management system 1 will be described.

First, the processing involving the processor and the designer will be explained.

FIG. 3 is a diagram for explaining the processing involving the processor and the designer according to the embodiment.

First, the measurement module 29 of the processor 2 performs measurement processing on the machine tool 20 at predetermined time intervals to acquire measurement data (FIG. 3 (1)), and obtains the acquired measurement data in the cloud. It is transmitted to the server 10 (FIG. 3 (2)).

The transmission module 11 of the cloud server 10 receives the measurement data and stores the machine tool management table of the storage module 12, and the calculation module 13 specifies the rigidity value of the machine tool 20 based on the measurement data and determines the rigidity value. It is stored in the machine tool management table of the storage module 12 (FIG. 3 (3)). By the above processing, the latest measurement data of the machine tool 20 and the rigidity value are stored in the storage module 12. If the processor has a plurality of machine tools 20, the same processing as described above is executed for each machine tool 20. Further, when there is another machine tool, the same processing as described above is executed for each machine tool 20 of the other machine tool.

After that, when the designer computer 31 receives the designation of the processing basic data from the administrator, the received processing basic data is transmitted to the cloud server 10 (FIG. 3 (4)). The cloud server 10 generates a machining NC program based on the received basic machining data and the latest rigidity value of the machine tool 20 (selected machine tool) selected as the machine tool 20 that actually performs machining (). FIG. 3 (5). Here, the machine tool 20 that actually performs machining may be, for example, the machine tool 20 designated by the designer computer 31 or the machine tool 20 selected by the cloud server 10.

When the cloud server 10 receives the reception request of the processing NC program from the designer computer 31, it transmits (proposes) the generated processing NC program (FIG. 3 (6)). As a result, the designer computer 31 displays the machining NC program on the machining request screen 70 (see FIG. 7).

When the designer computer 31 receives the instruction of the manufacturing request by the processing NC program received from the administrator, the designer computer 31 transmits the manufacturing request to the cloud server 10 (FIG. 3 (7)). When the cloud server 10 receives the manufacturing request, the cloud server 10 transmits the manufacturing request and the machining NC program corresponding to the manufacturing request to the processor computer 28 of the processor who manages the selected machine tool corresponding to the manufacturing request (FIG. FIG. 3 (8)).

When the processor computer 28 receives the manufacturing instruction for the manufacturing request from the administrator, the processor computer 28 transmits the manufacturing instruction to the cloud server 10 based on the instruction by the administrator (FIG. 3 (9)). When the cloud server 10 receives the manufacturing instruction, the cloud server 10 transmits the machining NC program corresponding to the manufacturing instruction and the manufacturing instruction to the selected machine tool (FIG. 3 (10)). As a result, the selected machine tool that has received the manufacturing instruction executes the machining NC program to manufacture the product, that is, to machine the workpiece.

According to the above processing, a machining NC program is generated based on the latest rigidity value of the selected machine tool, the machining NC program is executed by the selective machine tool, and the product is manufactured. Therefore, the machining accuracy of the product is performed. Can be maintained properly.

Next, the processing involving the processor and the machine tool maker will be described.

FIG. 4 is a diagram illustrating a process involving a processor and a machine tool maker according to an embodiment.

First, the measurement module 29 of the processor 2 performs measurement processing on the machine tool 20 at predetermined time intervals to acquire measurement data (FIG. 4 (1)), and obtains the acquired measurement data in the cloud. It is transmitted to the server 10 (FIG. 4 (2)).

The transmission module 11 of the cloud server 10 receives the measurement data and stores it in the machine tool management table of the storage module 12, and the calculation module 13 specifies the rigidity value of the machine tool 20 based on the measurement data and the rigidity value. Is stored in the machine tool management table of the storage module 12 (FIG. 4 (3)). By the above processing, the latest measurement data of the machine tool 20 and the rigidity value are stored in the storage module 12. If the processor has a plurality of machine tools 20, the same processing as described above is executed for each machine tool 20. Further, when there is another machine tool, the same processing as described above is executed for each machine tool 20 of the other machine tool.

After that, the cloud server 10 measures the plurality of machine tools 20 manufactured by the machine tool maker that manages the machine tool maker computer 41, for example, when a request for machine tool information is received from the machine tool maker computer 41. The data and the rigidity value are transmitted to the machine tool maker computer 41 (FIG. 4 (4)). Here, the measurement data and the rigidity value may be transmitted as data indicating the measurement data and the rigidity value, or may be transmitted as display information (for example, a bitmap for display) for displaying the measurement data and the rigidity value. Good. As a result, the machine tool maker computer 41 displays, for example, the rigidity value / browsing management screen 80 (see FIG. 8), and the state of each machine tool 20 manufactured can be confirmed. As a result, the machine tool maker 4 can perform a parts replacement determination process for determining whether or not the parts of the machine tool 20 need to be replaced (FIG. 4 (5)). The parts replacement determination process may be performed by the administrator of the machine tool maker 4, or may be determined by the machine tool maker computer 41 according to a predetermined algorithm.

When the machine tool maker computer 41 needs to give an instruction to notify the parts replacement (for example, when the administrator performs the parts replacement determination process, the administrator has instructed the parts replacement notification. In the case), a parts replacement notification is transmitted to the cloud server 10 (FIG. 4 (6)).

The cloud server 10 transfers the parts replacement notification to the processor computer 28 of the processor who manages the machine tool 20 corresponding to the parts replacement notification (FIG. 4 (7)). As a result, in the processor computer 28, it is possible to appropriately grasp that the parts of the machine tool 20 need to be replaced by the parts replacement notification. The parts replacement notification may include a message indicating the necessity of maintenance such as parts replacement or adjustment, but other information may be included as long as it can indicate the necessity of maintenance other than the message. .. From this point of view, the parts replacement notification is sometimes called a maintenance necessity notification.

Next, the processing involving the processor and the tool maker will be described.

FIG. 5 is a diagram illustrating a process involving a processor and a tool maker according to an embodiment.

First, the measurement module 29 of the processor 2 performs measurement processing on the machine tool 20 at predetermined time intervals to acquire measurement data (FIG. 5 (1)), and obtains the acquired measurement data in the cloud. It is transmitted to the server 10 (FIG. 5 (2)).

The transmission module 11 of the cloud server 10 receives the measurement data and stores the machine tool management table of the storage module 12, and the calculation module 13 specifies the rigidity value of the machine tool 20 based on the measurement data and determines the rigidity value. It is stored in the machine tool management table of the storage module 12 (FIG. 5 (3)). By the above processing, the latest measurement data of the machine tool 20 and the rigidity value are stored in the storage module 12. If the processor has a plurality of machine tools 20, the same processing as described above is executed for each machine tool 20. Further, when there is another machine tool, the same processing as described above is executed for each machine tool 20 of the other machine tool.

After that, when the cloud server 10 receives a request for machine tool information from the tool maker computer 51, the cloud server 10 measures measurement data and rigidity of the machine tool 20 to which the tool manufactured by the tool maker 5 of the tool maker computer 51 is mounted. The value is transmitted to the tool maker computer 51 (FIG. 5 (4)). The measurement data and the rigidity value are transmitted to the tool maker computer 51 in this way because the machine tool maker 4 is permitted to transmit the measurement data and the rigidity data to the tool maker 5 in advance. Only in the case (specifically, when the transmission of these information is registered in the information provision rule table), and if not permitted, the measurement data and the rigidity value are not transmitted.

When the tool maker computer 51 receives the measurement data and the rigidity value, the tool maker computer 51 displays the measurement data and the rigidity value on a browsing management screen (not shown). As a result, the manager of the tool maker can identify an appropriate tool for good machining with the current machine tool 20 from the time change of the rigidity value of the machine tool 20. When the tool maker computer 51 receives an input of a proposal of an appropriate tool for good machining with the current machine tool 20 from the administrator, the tool maker computer 51 transmits the accepted tool proposal to the cloud server 10 (FIG. 5 (5). )).

When the cloud server 10 receives the tool proposal, it transfers the tool proposal to the machine tool computer 28 of the machine tool that manages the machine tool 20 to be proposed (FIG. 5 (6)). As a result, the manager of the computer 28 can consider replacing the tool of the machine tool 20 by proposing the tool.

Next, the measurement data input screen 60 displayed on the processor computer 28 based on the processing of the cloud server 10 will be described in detail.

<Measurement data input screen>
FIG. 6 is a diagram showing an example of a measurement data input screen displayed on the processor computer according to the embodiment. The measurement data input screen 60 is a screen for allowing the measurement data to be registered in the cloud server 10 when the measurement data cannot be transmitted to the cloud server 10 by the measurement module 29. When using this screen, the measurement module 29 needs to have a display unit for displaying measurement data.

The measurement data input screen 60 has a machine tool ID input area 61, a measurement value input area 62, a previous input data display area 63, a password input area 64, and a measurement data input button 64.

The machine tool ID input area 61 is an area for inputting the machine tool ID of the machine tool 20 in which the measurement data has been measured. The measurement value input area 62 is an area for inputting the measurement value measured by the measurement module 29. In the example of FIG. 6, the measured value input area 62 includes a region for inputting the displacement of the measured spindle of the machine tool 20 in the X-axis direction and a region for inputting the displacement in the Y-axis direction. The previously input data is displayed in the previously input data display area 63. The password input area 64 is an area for inputting the password of the administrator of the processor computer 28. When a password is entered in the password input area 64, the cloud server 10 authenticates the user, and when it is confirmed that the administrator is a legitimate administrator, the data is displayed in the previously input data 63 and a new measured value is obtained. Will be able to register. The measurement data input button 65 is a button that receives an instruction from the administrator to register the measured value input in the measured value input area 62 in the cloud server 10. When the measurement data input button 65 is pressed, the processor computer 28 transmits the measured value input in the measured value input area 62 to the cloud server 10 and causes the cloud server 10 to register the measured value.

Next, the processing request screen 70 displayed on the designer computer 31 based on the processing of the cloud server 10 will be described in detail.

<Processing request screen>
FIG. 7 is a diagram showing an example of a processing request screen displayed on the designer computer according to the embodiment.

The machining request screen 70 includes a password input area 71, a design data designation area 72, a design data transmission button 73, a machining program reception button 74, a machining program display area 75, a program approval / manufacturing request transmission button 76, and the like. It has a program disapproval transmission button 77.

The password input area 71 is an area for inputting the password of the administrator of the designer computer 31. When a password is input to the password input area 71, authentication is performed by the cloud server 10, and when it is confirmed that the administrator is a legitimate administrator, various information related to processing is transmitted to and from the cloud server 10. You can send and receive.

The design data designation area 72 is an area for designating the design data of the product to be manufactured. When the file name of the design data is specified in the setting data designation area 72, a preview of the shape of the product corresponding to the design data is displayed. The design data transmission button 73 is a button designated in the design data designation area 72 and receives an instruction from the administrator to transmit the processing data to the cloud server 10 to generate a processing program. When the design data transmission button 73 is pressed, the designer computer 31 transmits a generation request including the design data designated in the measurement data designation area 72 to the cloud server 10.

The machining program reception button 74 is a button that receives an instruction to receive the machining NC program generated by the cloud server 10 based on the design data transmitted to the cloud server 10. When the machining program reception button 74 is pressed, the designer computer 31 requests the cloud server 10 to transmit the machining NC program, and receives the machining NC program from the cloud server 10.

The machining program display area 75 is an area for displaying the machining NC program received from the cloud server 10. The machining program display area 75 may accept editing of the machining NC program.

The program approval / manufacturing request transmission button 76 is a button that approves the processing NC program received from the cloud server 10 and receives an instruction to transmit a processing (manufacturing) request by this processing NC program. When the program approval / manufacturing request transmission button 76 is pressed, the designer computer 31 transmits a manufacturing request to the cloud server 10 using the machining NC program displayed in the machining program display area 75.

The program disapproval transmission button 77 is a button for accepting the disapproval of the processing NC program received from the cloud server 10. When the program disapproval transmission button 77 is pressed, the designer computer 31 notifies the cloud server 10 of the disapproval of the processing NC program. When the disapproval of the processing NC program is notified, the cloud server 10 may create another candidate processing NC program and send it to the designer computer 31.

The machining request screen 70 shows an example in which only design data is transmitted as machining basic data, but when an uncorrected NC program is transmitted as machining basic data, an area for designating an uncorrected NC program. Is included so that when the design data transmission button 73 is pressed, the uncorrected NC program is transmitted together with the design data. Further, the program approval / manufacturing request transmission button 76 is an example of a method of transmitting an NC program to a machine tool, and may be substituted by another route or another GUI object. Similarly, the program disapproval transmission button 77 may be replaced by another GUI object as long as it can transmit the NC program regeneration instruction by the generation program.

Next, the rigidity value / browsing management screen 80 displayed on the machine tool maker computer 41 based on the processing of the cloud server 10 will be described in detail.

<Rigidity value / browsing management screen>
FIG. 8 is a diagram showing an example of a rigidity value / browsing management screen displayed on the machine tool maker computer according to the embodiment.

The rigidity value / browsing management screen 80 includes a password input area 81 and one or more machine tool display areas 82.

The password input area 81 is an area for inputting the password of the administrator of the machine tool maker computer 41. When a password is input to the password input area 81, authentication is performed by the cloud server 10, and when it is confirmed that the administrator is a legitimate administrator, the machine tool maker 4 with the cloud server 10 It is possible to send and receive various information about each machine tool 20 manufactured by. That is, the display area 82 for each machine tool corresponding to each machine tool 20 manufactured by the machine tool maker 4 can be displayed.

The machine tool display area 82 is an area for displaying information about one machine tool. On the rigidity value / browsing management screen 80, the display area 82 for each machine tool to which the tab in the display areas 82 for each machine tool is designated is displayed in the foreground.

The machine tool display area 82 includes a machine tool ID display area 83, a current state display area 84, a rigidity value history display area 85, an alert information display area 86, and a parts replacement notification button 87.

The machine tool ID display area 83 is an area in which the machine tool ID (machine tool ID) is displayed. By managing the contact information of the machine tool with respect to the machine tool ID in the machine tool maker computer 41, the contact information of the machine tool can be specified by the machine tool ID. Further, by notifying the machine tool ID to the cloud server 10, the cloud server 10 uses the machine tool ID as a key to refer to the machine tool management table and obtains the machine tool ID of the processor who manages the machine tool 20. It can be specified, and the contact information of the machine tool can be specified by referring to the machine tool account table using the machine tool ID as a key. Therefore, the machine tool ID can also be referred to as contact information. The current state display area 84 is an area in which the state of the current rigidity value of the machine tool 20 corresponding to the machine tool display area 82 is displayed. The rigidity value history display area 85 is an area in which the history of the rigidity value of the machine tool 20 corresponding to the display area 82 for each machine tool is displayed. In the rigidity value history display area 85, for example, a mark 88 indicating the rigidity value at a plurality of time points is displayed by a graph (rigidity value history graph) in which time (day) is taken on the horizontal axis and the rigidity value is taken on the vertical axis. Will be done. In the rigidity value history graph, a threshold value adjusting unit 89 for adjusting threshold value information as a reference for alerting to the rigidity value is displayed. When the threshold information is adjusted by the threshold adjustment unit 89, the machine tool maker computer 41 notifies the cloud server 10 of the adjusted threshold information.

The alert information display area 86 is an area where various alerts are displayed. In the present embodiment, when it is detected in the cloud server 10 that the rigidity value of the machine tool 20 is lower than the set threshold information, information indicating that fact is displayed in the alert information display area 86. .. The administrator of the machine tool maker computer 41 can grasp the alert for the machine tool 20 from the information displayed in the alert information display area 86. The parts replacement notification button 87 is a button that receives an instruction of a notification instructing the replacement of parts in the machine tool 20 from the administrator of the machine tool maker computer 41. When the parts replacement notification button 87 is pressed, the machine tool maker computer 41 displays an information input screen (not shown) for inputting the contents to be transmitted from the administrator in the parts replacement notification. Here, the content to be transmitted in the parts replacement notification may include, for example, information indicating the tool to be replaced and information indicating the replacement time. The machine tool maker computer 41 transmits a parts replacement notification including the contents input on the information input screen to the cloud server 10. When the cloud server 10 receives the parts replacement notification, the cloud server 10 transmits the parts replacement notification to the processor computer 28 of the processor who manages the target machine tool 20.

The rigidity value / browsing management screen 80 is managed by the cloud server 10 in the machine tool display area 82 as the contact information of the machine tool manager corresponding to the machine tool display area 82. For example, the processor ID, the processor's email address, the telephone number, and the like may be displayed.

<Variation>
The present invention is not limited to the above-described embodiment, and can be appropriately modified and implemented without departing from the spirit of the present invention. Further, the processes described below may be used in combination.

<< Input of tool management table and work management table >>
In the above embodiment, at least a part of the information of the tool management table may be input by the tool maker side via the tool maker computer 51. Further, at least a part of the information of the work management table may be input by the work maker side via a work maker computer (not shown) of the material maker (work maker). By doing so, the administrator of the cloud server 10 does not have to input these.

Further, in the designer computer 31, the administrator of the designer computer 31 is made to select a tool to be used from the tools registered in the tool management table, and is registered in the work management table. The material to be used may be selected from the materials. In this case, the cloud server 10 uses the selected tool to generate an NC machining program for machining the selected material and sends it to the designer computer 31. In this way, the processor can respond to the manufacturing request from the designer by preparing the tools and materials registered in advance, and the registered tools and the registered tools can be registered. The use of the materials used is promoted.

<< Other generation processing by the generation program 1 >>
As a process of generating a processed NC program using an uncorrected NC program, the generation program may perform the processes shown in FIG. 9 and the following.
* (Step A1) At least a part of the information about the rigidity and shape of the component of the selected machine tool, the shape of the work before machining, the product shape, the uncorrected NC program, and the cutting resistance of the work was used. Simulate physical phenomena during machining. As a result, the shape of the workpiece during machining is predicted in consideration of the deformation of the constituent of the selective machine tool during machining. The simulation may be performed by, for example, a deformation analysis program using the finite element method, but may be performed by another program. FIG. 11 shows a simulation model. In FIG. 11, when the cutting edge of the tool is displaced by δ due to the cutting resistance F_r, the force for canceling the cutting resistance F_r is the restoring force (related to the rigidity of the tool) F_b when the tool is regarded as a leaf spring. A model generated based on the restoring force (which can also be regarded as a moment. The rigidity value of the spindle is related) F_s when the spindle is regarded as a torsion spring is shown. Based on such a model, the displacement δ of the cutting edge can be obtained, and the shape of the workpiece during machining can be predicted.
* (Step A2) The error is calculated based on the comparison between the predicted shape of the work and the target shape of the work. The target shape of the work is the shape of the work being machined when there is no deformation of the components of the selected machine tool during machining. If the displacement δ of the cutting edge in step A1 is regarded as an error, this step may be omitted.
* (Step A3) Add or change the description to eliminate the error (tool diameter correction, tool length correction, tool wear compensation, feed rate, cutting speed, etc.) to the uncorrected NC program and store it as a machining NC program. ..

<< Other generation processing by the generation program 2 >>
As a process of generating a processed NC program using an uncorrected NC program, the generation program may perform the processes shown in FIG. 10 and the following. The following steps may be combined with the above steps A1 to A3.
* (Step B1) Educate the machine learning program with educational data. The educational data may have errors from, for example, the rigidity of the machine tool component, the cutting resistance of the workpiece, the NC program when machining in the past, the shape of the workpiece before machining, the product shape, and the product shape after machining. , Other values may be added or used as a substitute.
* (Step B2) Select At least a part of the rigidity and shape of the structure of the machine tool, the shape of the work before machining, the product shape, the uncorrected NC program, and the cutting resistance of the work into the machine learning program. Enter and get the error.
* (Step B2) Add or change the description to eliminate the error (tool diameter correction, tool length correction, tool wear compensation, feed rate, cutting speed, etc.) to the uncorrected NC program and store it as a machining NC program. ..

<<< Other >>
In the above description, a part or all of the processing performed by the processor may be performed by the hardware circuit. In addition, the various programs in the above embodiment may be installed from the program source. The program source may be a program distribution server or a non-volatile storage medium (eg, a portable storage medium).

Further, in the above description, the machining center has been mainly described as an example of a machine tool, but other machines may be used as long as NC control is possible.

Further, in the above description, the machine tool has shown an example in which the spindle and the work can be relatively moved in two directions intersecting each other, but the machine tool has the spindle and the work in three or more directions (for example,). It may be relatively movable in the X-axis direction, the Y-axis direction, and the Z-axis direction perpendicular to the XY plane). In that case, for example, the measuring module measures the rigidity information for each of the three or more directions with respect to the spindle of the machine tool, and the cloud server 10 receives the rigidity information for each of the three or more directions. Based on these, the rigidity values in the three or more directions of the spindle may be calculated, and the machining NC program may be generated based on these rigidity values. As a result, the processing accuracy of the product can be further improved.

Further, in the above description, the measurement module 29 is provided inside or outside the machine tool 20 to automatically measure the measured value. For example, a person in charge of measurement of a processor operates the measurement module. The measured value may be measured.

Further, if the measurement module 29 can output the rigidity value instead of the displacement, the cloud server 10 may accept the input of the rigidity value. Similarly, if the measurement module 29 outputs a force that causes a predetermined displacement instead of the displacement, the cloud server 10 may accept an input of a force that causes a predetermined displacement instead of the displacement.
From a different point of view, the data retention format for the input and output to the cloud server 10 and the internal rigidity value is a constant that indicates the relationship between the force applied to the structure of the machine tool and the displacement (including rotation). Good. The spring constant [N / m] described so far is only one expression form, and may be managed by displacement or restoring force. For example, the displacement can be handled corresponding to the spring constant if the cloud server 10 and the measurement module share the "reference force" that is the premise of causing the displacement. Similarly, the restoring force can be treated as equivalent to the spring constant if the cloud server 10 and the measurement module share the "reference displacement" that is the premise of generating the restoring force.

1 Machining management system, 10 cloud server, 20 machine tool, 28 machine tool calculator, 29 measurement module, 31 designer calculator, 41 machine tool maker calculator, 51 tool maker calculator

Claims

It is a machining management method using a management computer to manage multiple machine tools that execute machining programs and perform machining processing.
The management computer
(1) Upon receiving the measurement information of the components of the machine tool,
(2) Receive the basic machining data that is the basis for generating the machining program to be executed by the machine tool.
(3) The machining program is generated based on the measurement information of the predetermined machine tool in one or more machine tools and the machining basic data.
(4) Send the generated machining program and send it.
(5) A machining management method for transmitting measurement information of a component of the machine tool to a computer of the machine tool maker, which is a computer of the machine tool maker.
In the machining management method according to claim 1,
The plurality of machine tools are used by one of a plurality of processors.
The plurality of machine tools are manufactured by any of the plurality of machine tool manufacturers.
The measurement information includes rigidity information of the spindle of the machine tool.
The management computer
(6) The work used by the one machine tool based on the input of the measurement information of the components of the machine tool used by the one machine tool on the screen displayed on the machine computer of the one machine tool. Receives measurement information of machine components, stores them in association with the machine tool, and
(7) When a generation request for a machining program including the basic machining data is received,
(7-1) Identify machine tools that perform machining from multiple machine tools,
(7-2) Based on the rigidity information of the spindle of the measurement information of the specified machine tool, a machining program for machining with the machine tool is generated.
(7-3) Send the generated machining program and send it.
The management computer further
(8) Refusing to transmit the measurement information of the one machine tool to the computer of the processor other than the one using the one machine tool.
(9) Allowing the machine tool maker computer of the machine tool maker to transmit the measurement information of the machine tool, and the machine tool maker computer of a manufacturer other than the machine tool maker. A machining management method for refusing to transmit the measurement information of the one machine tool.
In the machining management method according to claim 2,
The management computer
Threshold information for evaluating the rigidity of the spindle of the machine tool of each machine tool maker is received from a plurality of the machine tool maker computers.
When the rigidity of any of the machine tools among the plurality of machine tools based on the rigidity information of the spindle falls below the threshold information, the machine tool is referred to the machine tool maker computer of the machine tool maker. The rigidity of the spindle is less than the threshold information, and the contact information that can identify the contact to the machine tool user is transmitted.
Machining management method.
In the machining management method according to claim 2,
The management computer
The shape of the tool used in the machine tool and the rigidity of the tool are received from the tool maker computer, which is a calculator of the tool maker attached to the machine tool, and the material of the work machine to be machined by the machine tool is provided. Receives the cutting resistance of the material of the work from the work maker computer, which is a computer,
The machining program is generated based on the shape of the tool, the rigidity of the tool, and the cutting resistance of the material of the workpiece.
Machining management method.
In the machining management method according to claim 1,
The machine tool is relatively movable in at least two directions in which the spindle and the work intersect each other.
The management computer
As the measurement information, the rigidity information for each of the two directions with respect to the spindle of the machine tool is received.
Machining management method.
In the machining management method according to claim 1,
The management computer
In (1), the measurement information of the component of the machine tool is received from a measurement module provided inside or outside the machine tool and acquiring the measurement information of the component of the machine tool.
The generated machining program in (4) is transmitted to the predetermined machine tool.
Machining management method.
One or more machine tools that execute a machining program to perform machining processing, a processor computer that is a calculator of a machine tool that performs machining by the machine tool, a management computer that manages the machine tool, and a manufacturer of the machine tool. It is a machining management system equipped with a machine tool maker computer, which is a computer of
The management computer
(1) Acquire the measurement information of the components of the machine tool and
(2) Receive the basic machining data that is the basis for generating the machining program to be executed by the machine tool.
(3) The machining program is generated based on the measurement information of the predetermined machine tool in one or more machine tools and the machining basic data.
(4) Send the generated machining program and send it.
(5) A machining management system that transmits measurement information of the components of the machine tool to the machine tool maker computer of the machine tool maker.
In the machining management system according to claim 7.
With the processor computer of multiple processors,
Including the machine tool maker computer of a plurality of machine tool makers,
The measurement information includes rigidity information of the spindle of the machine tool.
The management computer
(6) The said machine tool used by the machine tool based on the input of measurement information of the structure of the machine tool used by the machine tool to the screen displayed on the machine tool computer of the machine tool. The measurement information of the machine tool component is received, stored in association with the machine tool, and stored.
(7) When a generation request for a machining program including the basic machining data is received,
(7-1) Identify machine tools that perform machining from multiple machine tools,
(7-2) Based on the rigidity information of the spindle of the measurement information of the specified machine tool, a machining program for machining with the machine tool is generated.
(7-3) Send the generated machining program and send it.
The management computer further
(8) Refusing to transmit the measurement information of the one machine tool to the computer of the processor other than the one using the one machine tool.
(9) Allowing the machine tool maker computer of the machine tool maker to transmit the measurement information of the machine tool, and the machine tool maker computer of a manufacturer other than the machine tool maker. A machining management system that refuses to transmit the measurement information of the one machine tool.
In the machining management system according to claim 8.
The management computer
Threshold information for evaluating the rigidity of the spindle of the machine tool of each machine tool maker is received from a plurality of the machine tool maker computers.
When the rigidity of any of the machine tools among the plurality of machine tools based on the rigidity information of the spindle is less than the threshold information, the work of the machine tool manufacturer whose rigidity of the spindle is less than the threshold information. To the machine maker computer, the rigidity of the spindle of the machine tool is less than the threshold information, and the contact information that can identify the contact information to the processor using the machine tool is transmitted.
Machining management system.
In the machining management system according to claim 8.
A tool maker computer that is a computer of a tool maker attached to the machine tool and a work maker computer that is a computer of a maker that provides materials for a workpiece to be machined by the machine tool are included.
The management computer
The shape of the tool used in the machine tool and the rigidity of the tool are received from the tool maker computer, and the cutting resistance of the material of the work is received from the work maker computer.
The machining program is generated based on the shape of the tool, the rigidity of the tool, and the cutting resistance of the material of the workpiece.
Machining management system.
In the machining management system according to claim 7.
The machine tool is relatively movable in at least two directions in which the spindle and the work intersect each other.
The management computer
As the measurement information, information on the rigidity of the spindle of the machine tool in each of the two directions is received.
Machining management system.
In the machining management system according to claim 7.
The management computer
In (1), the measurement information of the component of the machine tool is received from a measurement module provided inside or outside the machine tool and acquiring the measurement information of the component of the machine tool.
The generated machining program in (4) is transmitted to the predetermined machine tool.
Machining management system.
A machining management system having one or more machine tools for machining a predetermined work and a management computer connected to the machine tools via a network.
The machining management system includes a measurement module inside or outside the machine tool for acquiring measurement information of the components of the machine tool.
The management computer
(1) Upon receiving the measurement information of the structure of the machine tool acquired by the measurement module,
(2) A machining management system that transmits measurement information of a component of the machine tool or display information for displaying the measurement information of the component of the machine tool to a computer of the manufacturer of the machine tool.
A management computer that manages machine tools
The management computer has a storage module for storing a program and an arithmetic module.
The machine tool has a stage movable in at least the direction of the first axis and the direction of the second axis, and performs machining processing according to a machining program. The first axis and the second axis Is the axis specified when describing the tool path by the machining program.
The arithmetic module is by the program:
(1) With respect to the spindle of the machine tool, a first value capable of specifying a rigidity value along the first axis is received.
(2) With respect to the spindle, a second value capable of specifying a rigidity value along the second axis is received.
(3) The first value and the second value are displayed on a computer connected to the management computer.
Management calculator.