JPH11156657A - Automatic tool selection device and automatic tool selection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic tool selection device and automatic tool selection method which can automatically select tools to be replaced for a short time, among the tools housed in a tool magazine, assist determination of replacement of the tools, and shorten preparation time before machining. SOLUTION: A machining schedule file, machining file group, and ATC pot management file stored in a memory means 9 are collated. In formation of tools used for machining is compared with information of tools housed in a tool magazine 32. In the case that the machining tools are shorted, a computer 10 selects a tool to be replaced and automatically index the shorted tool based on tool selection condition which is previously set. The result is reflected on the ATC pot management file. The selected tools to be replaced are displayed on a CRT 2. An operator can command the tool to be replaced among them by a key board 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerically controlled machine tool (NC machine tool) having an automatic tool changer (ATC machine), in which a tool used for machining is attached to or detached from a tool magazine pot (ATC pot). The present invention relates to an automatic tool selection device and an automatic tool selection method for automatically selecting and indicating an optimum replacement place when performing the above operation.

[0002]

2. Description of the Related Art Conventionally, in a machining center type NC machine tool, a tool stored in a plurality of ATC pots in a tool magazine and a tool mounted on a main shaft of the machine tool are processed by an automatic tool changer. Or it was replaced according to the processing procedure. In the tool change operation for the ATC pot in the tool magazine, it is necessary to determine which tool on the ATC pot is to be removed and to which tool the processing tool is to be attached, based on the list of tools necessary for the processing. I was working.

[0003]

However, in a machining center or the like, the number of pots that can be mounted has increased due to the increase in the number of tools that can be used, and the type of work has also differed in the case of high-mix low-volume production. With the increase in the types of tools used, the work of allocating tools to the ATC pot requires a fairly skilled intuition. This has an economical problem that the preparation work time before processing increases and the machine operation rate decreases.

Therefore, the present invention has been made in view of the above circumstances, and when performing a machining registered in a machining schedule file, extracts the used tool information contained in the machining file and attaches it to a tool magazine of a machining center. Automatically selects the most suitable tool in a short time by checking the ATC pot management file that reflects the status of the tool being used, and assists in the determination of the removal of the tool, so that the preparation work time before machining It is an object of the present invention to provide an automatic tool selection device and a tool automatic selection method capable of shortening the time.

[0005]

According to a first aspect of the present invention, there is provided an automatic tool selecting apparatus, comprising: a plurality of tools stored in a tool magazine of a numerically controlled machine tool;
Exchange means for exchanging tools mounted on the numerically controlled machine tool, tool information of tools used for machining, tool storage information of tools stored in the tool magazine, tools stored in the tool magazine When replacing a tool, storage means for storing a tool selection condition for selecting a tool to be removed, and a total number of tools necessary for machining are calculated from the used tool information, and stored in a tool magazine based on the total amount. It is characterized by having control means for judging whether or not the number of tools being set is insufficient and, when the number of tools is insufficient, selecting a tool to be removed from the tool magazine based on the tool selection condition.

[0006] In order to solve the above-mentioned problem, a second aspect is provided.
An automatic tool selection device according to the present invention relates to a machine tool for processing a workpiece by numerical control, a tool magazine storing a plurality of tools used in processing by the machine tool, and a tool stored in a pot of the tool magazine. And a machining center having an automatic tool changer for exchanging tools mounted on the machine tool, tool information used when processing with the machine tool, tool storage information of tools stored in the pot, necessary for processing Storage means for storing a tool selection condition when selecting a tool to be removed from the pot in order to mount a suitable tool, and calculating a total number of tools necessary for machining from the used tool information, and The tool storage information is compared to determine whether the number of tools stored in the pot is excessive or insufficient. If the number of tools is insufficient, the number of tools stored in the pot is determined based on the tool selection conditions. Control means for selecting a tool to be removed from the tool and allocating a missing tool in place of the tool, and display means for displaying a result of the allocation of the tool to be removed and the missing tool selected by the control means. It is characterized by the following.

Preferably, in claim 2, the control means selects an empty pot and a damaged tool based on the tool selection condition and allocates a missing tool.
When the number of tools is insufficient, a removal target is selected from normal tools according to the number of times of use and the time of use.

Preferably, in claim 3, when the object to be removed selected from the normal tools is displayed on the display means, an input means for inputting an instruction of the tool to be removed from the objects to be removed. Having.

According to another aspect of the present invention, there is provided a semiconductor device comprising:
The automatic tool selection method of the present invention according to the present invention, the tool used information of the tool used in the processing by the numerically controlled machine tool, the tool storage information of the tool stored in the tool magazine of the numerically controlled machine tool, the tool magazine When replacing a stored tool, a storage step of storing a tool selection condition for selecting a tool to be removed, and calculating a total number of tools necessary for machining from the used tool information, based on the total amount A used tool calculation processing step for determining whether the number of tools stored in the tool magazine is excessive or insufficient, and when it is determined that the number of tools is insufficient in the used tool calculation processing step, the tool is removed from the pot based on the tool selection condition. And a tool selection condition processing step of selecting a target tool.

[0010] In order to solve the above-mentioned problems, the present invention is applied to claim 6.
The automatic tool selection method according to the present invention relates to tool information used when processing with a numerically controlled machine tool, tool storage information of a tool magazine in which a plurality of tools are stored in each pot, and for mounting a tool required for processing. Storing a tool selection condition when selecting a tool to be removed from the pot, and calculating a total number of tools necessary for machining from the used tool information, and comparing the total with the tool storage information. A used tool calculation processing step for determining whether the number of tools stored in the pot is excessive or insufficient, and in the used tool calculation processing step, if it is determined that the number of tools is insufficient, the pot is determined based on the tool selection condition. A tool selection condition processing step in which a tool to be removed from the tool is selected and a short tool is allocated in place of the tool. Characterized in that it comprises a display step of displaying the allocation results of the selected removal target tool and under the tool at.

[0011] In order to solve the above-mentioned problems, a seventh aspect of the present invention is provided.
The automatic tool selection method according to the present invention relates to tool information used when processing with a numerically controlled machine tool, tool storage information of a tool magazine in which a plurality of tools are stored in each pot, and for mounting a tool required for processing. A first storage step of storing a tool selection condition when selecting a tool to be removed from the pot; a calculation step of calculating a total number of tools necessary for machining from the used tool information; A first determination step of comparing the tool storage information to determine whether the number of tools stored in the pot is excessive or insufficient, and when it is determined that the number of tools is insufficient in the first determination step,
A tool selection condition first processing step of selecting an empty pot and a damaged tool based on the tool selection condition and allocating the missing tool, and the removal target tool and the missing tool selected in the tool selection condition first processing step. A second storage step of reflecting an allocation result in the tool storage information; a second determination step of comparing the total and the allocation result of the first processing step of the tool selection condition to determine whether the number of tools is excessive or insufficient; If it is determined in the determination step that the number of tools is insufficient, a tool selection condition second processing step of selecting a removal target according to the number of times of use and the time of use from among normal tools other than the standard mounting tool based on the selection condition. And a display step of displaying the removal target tool selected in the tool selection condition second processing step. The features.

Preferably, a seventh aspect of the present invention includes a tool selection processing step of allocating a shortage tool in place of the input tool in the removal target tools selected in the tool selection condition second processing step.

[0013] In order to solve the above-mentioned problems, a ninth aspect is provided.
An automatic tool selection device according to the present invention relates to a machine tool for processing a workpiece by numerical control, a tool magazine storing a plurality of tools used in processing, a tool stored in a pot of the tool magazine, and the machine tool. A machining center having an automatic tool changer for exchanging a tool mounted on the machine, a machining file having information including tool information used when machining with the machine tool for each work, and tool storage of tools stored in the pot A pot management file for storing information, storage means for storing tool selection conditions for selecting a tool to be removed from the pot on the pot management file, and a total number of tools necessary for machining from the used tool information. Calculate and compare the total with the tool storage information to determine whether the number of tools stored in the pot management file is excessive or insufficient. If the number of tools is insufficient as a result of the determination by the tool calculation processing means for use and the tool calculation processing means for use, a tool to be removed is selected on the pot management file based on the tool selection condition, and the tool to be removed is selected. Instead of a CPU having a tool selection condition processing means for allocating insufficient tools, and a computer having display means for displaying the selection result of the tool to be removed and the allocation result of the missing tools by the tool selection condition processing means. It is characterized by the following.

[0014] Preferably, in the ninth aspect, the tool selection condition processing means, if there is a shortage of tools required for machining, the first tool selection condition causes the shortage of an insufficient pot on the pot management file according to the first tool selection condition. Allocate a tool, furthermore, if there is a shortage of tools, select a damaged tool other than the standard installation tool as a removal target, assign a shortage of tools in place of the damaged tool, and if there is a shortage of tools, A standard installation tool, which is damaged, is selected as an object to be removed, a shortage of tools is allocated in place of the damaged one, and thereafter, based on the second tool selection condition, a tool other than the standard installation tool is used. Of normal tools whose number of times of use exceeds the specified number of times and whose remaining use time exceeds the specified time are selected for removal, and Along with allocating a shortage of the tool instead of the elephant of the tool, to reflect the allocation result to the pot management file.

[0015] Preferably, in claim 10,
When the object to be removed selected based on the second tool selection condition is displayed on the display means, the input means for inputting an instruction of a tool to be removed from the objects to be removed is provided. The means allocates the insufficient tool in place of the tool specified by the input means, and reflects the allocation result in the pot management file in addition to the allocation result based on the first tool selection condition.

[0016] In order to solve the above-mentioned problems, a first aspect is provided.
In the automatic tool selection method according to the second aspect of the present invention, a machining file having information including tool information to be used when machining with a numerically controlled machine tool is provided for each work, and tool storage information of a tool magazine storing a plurality of tools in each pot. A pot management file to be stored, a first storage step of storing a tool selection condition for selecting a tool to be removed from the pot on the pot management file, and a total number of tools necessary for machining from the used tool information. A calculating step of calculating, a determining step of comparing the total and the tool storage information to determine whether the number of tools stored in the pot management file is excessive or insufficient, and a case where it is determined that the number of tools is insufficient in the determining step. Selecting a tool to be removed on the pot management file based on the tool selection condition, Instead, a tool selection condition processing step for allocating a missing tool, a display step for displaying the allocation result of the tool to be removed and the tool lacking selected in the tool selection condition processing step, and storing the allocation result in the pot management file And a second storage step.

[0017] In order to solve the above-mentioned problems, a first aspect is provided.
The method for automatically selecting a tool according to the third aspect of the present invention includes a processing file having information including tool information to be used when processing with a numerically controlled machine tool for each work, and tool storage information of a tool magazine storing a plurality of tools in each pot. A pot management file to be stored, a first storage step of storing first and second tool selection conditions for selecting a tool to be removed from the pot on the pot management file; A calculating step of calculating a total number of necessary tools; a first determining step of comparing the total number with the tool storage information to determine whether the number of tools stored in the pot management file is excessive or insufficient; and a first determining step thereof. If it is determined that there is a shortage of tools, the tool is assigned to an empty pot on the pot management file based on the first tool selection condition. If there is a shortage of tools, select a damaged tool other than the standard installation tool as the object to be removed, and assign the missing tool in place of the damaged tool. A tool selection first processing step of selecting a damaged tool as a removal target and allocating a missing tool in place of the damaged tool, and an allocation result in the tool selection condition first processing step In the pot management file, a second determination step of comparing the total with the allocation result of the first processing step of the tool selection condition to determine whether the number of tools is excessive or not, and a second determination thereof. If it is determined in step that the number of tools is insufficient, based on the second tool selection condition, a normal tool other than the standard mounting tool is used. A tool selection condition second processing step of selecting a tool whose number of uses exceeds a predetermined number of times and a tool whose remaining use time exceeds a predetermined time as a removal target, and the tool selection condition second processing step. A first display step of displaying a tool to be removed.

Preferably, a tool selection processing step of allocating a shortage tool in place of the input tool among the removal target tools selected in the tool selection condition second processing step according to claim 13, A third storage step of reflecting the allocation result in the tool selection processing step in the pot management file in addition to the allocation result in the tool selection condition first processing step;
A second display step of displaying the allocation result in the tool selection processing step in addition to the allocation result in the tool selection condition first processing step.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a configuration diagram of an automatic tool selection device according to an embodiment of the present invention. This embodiment includes a machining center type machine tool (machining center 30), a numerical controller 20 for controlling machining by the machining center 30, and a computer 10 connected to the numerical controller 20 and the sequence controller 21. The machining center 30 has a tool magazine 3 for storing and holding a plurality of types of tools in an ATC pot 31.
2, and a tool exchange device 33 for automatically exchanging a tool stored in the tool magazine 32 and a tool mounted on the main shaft 34. The tool in the tool magazine 32 is selectively operated by the tool exchange device 33. The workpiece 40 is processed by being mounted on the main shaft 34.

The storage means 9 of the computer 10 has a processing schedule file 51, a processing file group 52, and an ATC pot management file 53 shown in FIG. In the processing schedule file 51, a processing file having a name of a processing work, a processing order thereof, and processing data is registered, and processing is performed during automatic operation. Further, in each machining file of the machining file group 52, tool information (used tool information), work information, and machining path information necessary for machining in the machining center 30 are registered as machining information for each work. Further, the status of the tools stored in the ATC pot 31 (tool storage information) is reflected in the ATC pot management file 53. The registration contents of the ATC pot management file 53 are as shown in FIG. 3, and at least the number, tool name, bearing type, tool diameter, tool life, tool cumulative use time, and tool state assigned to each ATC pot are shown. It is registered.

Further, the storage means 9 of the computer 10 stores a selection condition for selecting a tool to be removed from the pot on the ATC pot management file. In the present embodiment, the ATC pot management file 5
3 Remove the empty pot that does not contain any tools, the ATC pot that contains damaged tools other than the standard installation tools, and the ATC pot that contains the standard installation tools that are damaged. The first selection condition to be the target (the selection condition first shown in FIG. 2) and the normal tools other than the standard mounting tool, the number of times of use exceeding the predetermined number of times and the remaining time of the use limit time exceed the predetermined time The second selection condition (the second selection condition shown in FIG. 2) indicating that the surplus is to be removed is stored.

Further, the CPU 1 of the computer 10 has a function of controlling the entire apparatus and performing a tool use condition calculation process, a tool selection condition first process, and a tool selection condition second process shown in FIG. The used tool calculation process includes a calculation process of calculating a total number of tools required for machining from the used tool information of the machining file 52 corresponding to the target machining workpiece;
A determination process of comparing the total with the tool storage information of the ATC pot management file 53 to determine whether the number of tools for the processed workpiece is excessive or insufficient. The first tool selection condition processing and the second tool selection condition processing are based on the first selection condition and the second selection condition processing. This is for selecting a tool to be removed from the file 53, and for allocating an insufficient tool in place of the tool to be removed. In particular, in the tool selection condition second process, after selection, a tool specified by the operator from the removal targets displayed on the CRT 2 is removed from the ATC pot management file 53, and a tool in shortage is allocated instead.

The CRT 2 of the computer 10 stores an ATC pot management file 53 for each tool selection condition processing.
This is a display means for displaying the allocation result of the tool to be removed selected from the ATC pot management file 53 and the lacking tool on the ATC pot management file 53 (specifically, a tool list described later in Tables 2 and 3).

The keyboard 3 of the computer 10
Is input means for instructing a tool to be removed from the removal targets when the removal target selected in the tool selection condition second process is displayed on the CRT 2.

The printer 11 of the computer 10
Are the tool excess / shortage check results (specifically, a tool list table 1 described later) and the allocation results obtained by the first selection condition processing (specifically, a tool list table 2 described later) ) Etc. are printed.

The ROM 4 of the computer 10 stores C
The RAM 5 is used as a work area for the CPU 1 and temporarily stores data from the numerical controller 20 or the sequence controller 21. , 7 are communication interfaces with the numerical controller 20, and interface 8 is a communication interface with the sequence controller 21.

The sequencer controller 21 controls the tool exchange of the machining center 30 and the drive of the tool magazine 32, and also starts and stops automatic operation of the machine according to a command from the computer 10. Further, it has a role of notifying the computer 10 of the operation state of the machine.

Next, the processing procedure of the CPU 1 will be described in detail with reference to the flowcharts of FIGS. As shown in FIG. 4, information on all the tools used is extracted from the machining files registered in the machining schedule file 51 (step S100). This extracted tool information is
Using the name of the tool used as a key, the tool is classified and integrated to calculate the total tool usage time (total number of tools required for machining) for each tool type (step S105).

Next, the "total use time of the tool for each tool type" obtained in step S105 and the "status of the tool (tool storage) stored in the tool magazine 32 of the machining center 30 registered in the ATC pot management file" Information)] to determine whether there is an excess or deficiency of the tool (step S110). Furthermore, the result (for example, the first tool list)
Table) is printed out by the printer 11.

[0031]

[Table 1] If it is determined in step S110 that there is a shortage, the first processing of the tool selection condition is performed and the ATC
Select a removable tool on the pot management file 53,
Assignment is performed so that the insufficient tool is newly attached there (step S120).

Further, the result of the tool allocation by the first processing of the tool selection condition performed in step S120 is compared with the total use time of the tool for each tool type obtained in step S105, and it is determined whether the tool is excessive or insufficient ( If it is determined that there is a shortage (step S125), a second tool selection condition process is performed (step S130).

Here, the first processing of the tool selection condition (step S120) will be described in detail with reference to FIGS. First, A
By checking the tool registration status of the TC pot management file (step S200), it is determined whether or not there is an empty pot (step S205). As a result, if there is an empty pot, the insufficient tool is allocated thereto (step S21).
0). Further, this assignment is repeated as long as there is a shortage of tools (step S215). As a result, when there are no empty pots (N in step S205)
O), go to the next selection condition step S220.

In step S220, the tool registration status in the ATC pot management file 53 is checked, and if it is determined that the tool cannot be used due to tool breakage and the tool attached to the ATC pot is a predetermined type of tool (standard mounting). In the case other than (tool), the tool is removed and a lacking tool is assigned instead (step S235). This assignment is performed until there is no insufficient tool. As a result, when there is no tool that cannot be used and corresponds to a tool other than the standard mounting tool (NO in step S220), the next selection condition step S
Go to 240.

In step S240, the presence or absence of unusable tools is checked by checking the tool registration status in the ATC pot management file 53. As a result, even if the tool attached to the ATC pot is a predetermined type of tool (standard mounting tool), if it is broken and cannot be used,
The tool is removed and a shortage of tools is allocated instead (step S250). This assignment is performed until there is no shortage of tools (NO in step S225).
Go to 260.

In step S260, step S200
The removable tools obtained in the processing from step S260 to step S260 and the mounting tools to be mounted there as a shortage are rearranged in the order of pot numbers. The result rearranged in step S260 is a CRT as a tool list second table.
2 or printed out by the printer 11 (step S265).

[0037]

[Table 2] Further, the values in the second table of the tool list displayed on the CRT 2 are directly reflected in the ATC pot management file 53 (step S270).

Next, the tool selection condition second process (step S130) will be described in detail with reference to FIG. The tool selection condition second process is performed when the tool to be used is not sufficiently attached even after performing the tool selection condition first process (step S120) as described above (YES in step S125).
First, a tool registration state of an ATC pot registered in the ATC pot management file 53 and not selected in the first tool selection condition processing is read (step S).
300). It is determined whether the unselected tools are tools attached outside of the standard position (step S305), and it is further determined whether the number of times of use is less than a predetermined value (step S31).
0) Further, it is determined whether the remaining time of the tool is less than a predetermined value with respect to the tool use limit time (step S3).
15), an unselected tool corresponding to these conditions is newly registered as a selection target (step S340). When the determination on all the tools registered in the ATC pot management file 53 is completed (YES in step S320), the result of the selection is stored in the tool list table 3 as CR.
It is displayed on the T screen (step S325).

[0039]

[Table 3] Further, when an instruction to select a tool to be removed from the keyboard 3 is given to the third table of the tool list displayed on the CRT screen (YE in step S330).
S), the tool designated here is removed from the ATC pot management file 53, and the result of allocating the insufficient tool is added to the tool list table 2 and displayed again on the CRT screen (step S335). Then, the values of the redisplayed tool list table 2 are reflected in the ATC pot management file 53.

As described above, according to the present embodiment, the processing schedule file 51 and the processing file group 5
2 and the ATC pot management file 53 are collated, tool information required for machining is extracted from the machining files registered in the machining schedule file 51, and a tool group based on the used tool information and an ATC pot management file A comparison is made with the “status of tools stored in the tool magazine 32 of the machining center 30 (tool storage information)” registered in the 53 to determine whether there is an excess or a lack of tools, and a used tool calculation process for printing the result. If there is a shortage in the ATC pot, the AT to be removed to attach the tool to be used
A tool for selecting and displaying a C pot tool, and a tool selection condition first process capable of reflecting the allocation result based on the tool selection in the ATC pot management file 53; Whether the tool is installed at a position other than the position, the tool has a tool available time less than the default value, the tool is used less than the default number of times,
The tool list selected according to the above condition is displayed, and the tool selection condition second processing in which the tool to be removed can be selected and designated from the tool list is automatically performed. When a tool is mounted on the machining center 30, an optimal tool replacement method without waste according to the processing schedule is selected, the time for tool replacement work can be reduced, and the number of tools to be prepared can be minimized. Automatic selection of the tool in consideration of the above is also possible.

[0041]

As described above, according to the present invention,
The tool group based on the used tool information extracted from the machining file is compared with the tool storage information in the ATC pot management file, and a target to be removed from the ATC pot is selected based on preset selection conditions, and allocation is performed by the selection. Since the result is reflected in the ATC pot management file, the selection of the tool to be removed and the assignment of the missing tool can be automatically performed in a short time.

Also, the removal object automatically selected based on the preset selection conditions is displayed, and the operator can specify which tool is to be removed from the display. Since it is configured to be reflected in the management file, it is possible to assist the operator in making a decision on tool replacement.

Therefore, compared with manual work, less skill is required, tool replacement can be performed without waste in accordance with the processing schedule, the number of tools to be prepared before processing can be reduced, and the working time before processing can be greatly reduced. Can be shortened to

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an automatic tool selection device according to an embodiment of the present invention.

FIG. 2 is a functional configuration diagram of an automatic tool selection device according to an embodiment of the present invention.

FIG. 3 is a diagram showing an ATC pot management file in the automatic tool selection device according to an embodiment of the present invention.

FIG. 4 is a flowchart showing a tool automatic selection method according to an embodiment of the present invention.

FIG. 5 is a flowchart illustrating a tool selection condition first process in an automatic tool selection method according to an embodiment of the present invention.

FIG. 6 is a flowchart illustrating a tool selection condition first process in an automatic tool selection method according to an embodiment of the present invention.

FIG. 7 is a flowchart illustrating a tool selection condition second process in the tool automatic selection method according to the embodiment of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 CRT 3 Keyboard 9 Storage means 10 Computer 11 Printer 20 Numerical controller 30 Machining center 31 ATC pot 32 Tool magazine 33 Automatic tool changer

Claims (14)

[Claims] 1. A plurality of tools stored in a tool magazine of a numerically controlled machine tool, an exchanging means for exchanging a tool mounted on the numerically controlled machine tool, and tool information of a tool used for machining; Storage means for storing tool storage information of tools stored in a tool magazine, tool selection conditions for selecting a tool to be removed when replacing a tool stored in the tool magazine, and the used tool information Calculate the total number of tools necessary for machining from, and judge the excess or deficiency of tools stored in the tool magazine based on the total, and if there are insufficient tools, remove them from the tool magazine based on the tool selection conditions Control means for selecting a target tool. 2. A machine tool for machining a workpiece by numerical control, a tool magazine containing a plurality of tools used in machining by the machine tool, and a tool housed in a pot of the tool magazine and mounted on the machine tool. A machining center having an automatic tool changer for exchanging a set tool, tool information used when processing with the machine tool, tool storage information of a tool stored in the pot, and a tool required for processing. Storage means for storing a tool selection condition when selecting a tool to be removed from the pot, and calculating a total number of tools necessary for machining from the used tool information, and comparing the total with the tool storage information. And determining whether the number of tools stored in the pot is excessive or insufficient. If the number of tools is insufficient, the object to be removed from the pot is determined based on the tool selection conditions. Control means for selecting a new tool and allocating a missing tool in place of the tool, and display means for displaying a result of the allocation of the tool to be removed and the missing tool selected by the control means. Automatic tool selection device. 3. The method according to claim 2, wherein the control unit selects an empty pot and a damaged tool based on the tool selection condition and allocates a missing tool.
After this, when there is a shortage of tools, an automatic tool selection device is characterized in that a tool to be removed is selected from normal tools according to the number of times of use and the time of use. 4. The apparatus according to claim 3, further comprising: input means for inputting an instruction for a tool to be removed from the removal targets when a removal target selected from the normal tools is displayed on a display unit. An automatic tool selection device. 5. Tool information of a tool used in machining by a numerical control machine tool, tool storage information of a tool stored in a tool magazine of the numerical control machine tool, and exchange of a tool stored in the tool magazine When doing, a storage step of storing a tool selection condition for selecting a tool to be removed, and calculating the total number of tools required for machining from the used tool information, and stored in the tool magazine based on the total amount A used tool calculation processing step for determining whether there is an excess or deficiency of a tool, and if it is determined that the number of tools is insufficient in the used tool calculation processing step, select a tool to be removed from the pot based on the tool selection condition. An automatic tool selection condition processing step. 6. Tool information used when processing with a numerically controlled machine tool, tool storage information of a tool magazine storing a plurality of tools in each pot, and an object to be removed from the pot in order to mount a tool necessary for processing. A storage step of storing a tool selection condition when selecting a tool to be used, and calculating a total number of tools required for machining from the used tool information, comparing the total with the tool storage information, and storing the total in the pot. A used tool calculation processing step for determining whether there is an excess or deficiency of the tool being used, and a tool to be removed from the pot based on the tool selection condition when it is determined in the used tool calculation processing step that the tool is insufficient. Is selected, and a tool selection condition processing step for allocating a missing tool in place of the tool, and the selection selected in the tool selection condition processing step Automatic tool selection method characterized by comprising: a display step of displaying the allocation result of the target tool and under the tool, and the. 7. Tool information used when processing with a numerically controlled machine tool, tool storage information of a tool magazine storing a plurality of tools in each pot, and an object to be removed from the pot in order to mount a tool required for processing. A first storage step of storing a tool selection condition when selecting a tool to be used; a calculation step of calculating a total number of tools necessary for machining from the used tool information; and comparing the total number with the tool storage information. A first determining step of determining whether the number of tools stored in the pot is excessive or insufficient, and if it is determined in the first determining step that the number of tools is insufficient, an empty pot and a damaged tool are determined based on the tool selection conditions. A tool selection condition first processing step for selecting and allocating a missing tool; and a tool to be removed selected in the tool selection condition first processing step; A second storage step of reflecting the allocation result of the foot tool in the tool storage information; a second determination step of comparing the total and the allocation result of the first tool selection condition first processing step to determine whether the number of tools is excessive or insufficient; If it is determined in the second determination step that the number of tools is insufficient, based on the selection conditions, a tool selection condition for selecting an object to be removed according to the number of times of use and the time of use from among normal tools other than the standard mounting tools. A tool automatic selection method, comprising: two processing steps; and a display step of displaying the removal target tool selected in the tool selection condition second processing step. 8. The method according to claim 7, further comprising: a tool selection processing step of allocating a shortage tool in place of the instruction-input tool among the removal target tools selected in the tool selection condition second processing step. A featured tool automatic selection method. 9. A machine tool for machining a workpiece by numerical control, a tool magazine containing a plurality of tools used for machining, a tool housed in a pot of the tool magazine, and a tool mounted on the machine tool. A machining center having an automatic tool changer for exchanging tools, a machining file having information including information on tool used when machining with the machine tool for each work, and a pot management storing tool storage information of tools stored in the pot File, storing means for storing a tool selection condition when selecting a tool to be removed from the pot on the pot management file, and calculating a total number of tools required for machining from the used tool information, Used tool calculation processing means for comparing the tool storage information and determining whether the number of tools stored in the pot management file is excessive or insufficient. As a result of the determination by the used tool calculation processing means, if there is a shortage of tools, a tool to be removed is selected on the pot management file based on the tool selection condition, and the shortage of the tool is performed instead of the tool to be removed. A CPU having tool selection condition processing means for allocating tools; and a computer having display means for displaying a result of selection of a tool to be removed by the tool selection condition processing means and a result of allocation of a missing tool. Automatic tool selection device. 10. The tool selection condition processing means according to claim 9, wherein, when there is a shortage of tools necessary for machining, the tool selection condition processing means determines whether or not there is a shortage of empty pots in the pot management file based on the first tool selection condition. Allocate a tool, furthermore, if there is a shortage of tools, select a damaged tool other than the standard installation tool as a removal target, assign a shortage of tools in place of the damaged tool, and if there is a shortage of tools, A standard installation tool, which is damaged, is selected as an object to be removed, a shortage of tools is allocated in place of the damaged one, and thereafter, based on the second tool selection condition, a tool other than the standard installation tool is used. Of normal tools, the number of times of use of which exceeds the predetermined number of times and the remaining time of use exceeding the predetermined time is selected as the object to be removed. Instead with allocating shortage of the tool of the tool, the tool automatically selecting apparatus characterized by reflecting the allocation result to the pot management file. 11. The input device according to claim 10, wherein when a removal target selected based on the second tool selection condition is displayed on a display, a tool to be removed from the removal target is input. Means, the tool selection condition processing means, while allocating the insufficient tool instead of the tool instructed by the input means,
An automatic tool selection apparatus, wherein an allocation result is reflected in the pot management file in addition to an allocation result based on the first tool selection condition. 12. A machining file having information including tool information used when machining with a numerically controlled machine tool for each workpiece.
A pot management file for storing tool storage information of a tool magazine storing a plurality of tools in each pot, and a first storage for storing a tool selection condition for selecting a tool to be removed from the pot on the pot management file. A step of calculating a total number of tools required for machining from the used tool information; and determining whether the number of tools stored in the pot management file is excessive or insufficient by comparing the total number with the tool storage information. If it is determined that the number of tools is insufficient in the determination step, a tool to be removed is selected on the pot management file based on the tool selection condition, and the insufficient tool is used instead of the tool to be removed. Tool selection condition processing step to which the tool is assigned, and the removal target selected in the tool selection condition processing step Ingredients and a display step of displaying the allocation results of the lack of the tool, the second storage step and, automatic tool selection method characterized by including storing the assignment result to the pot management file. 13. A machining file having information for each work including information on tool used when machining with a numerically controlled machine tool,
A pot management file for storing tool storage information of a tool magazine in which a plurality of tools are stored in each pot, and first and second tool selection conditions for selecting a tool to be removed from the pot on the pot management file A first storage step of storing a total number of tools required for machining from the used tool information; and comparing the total number with the tool storage information to determine a tool stored in the pot management file. First to determine excess or deficiency
If it is determined in the determination step and the first determination step that the number of tools is insufficient, the insufficient tools are allocated to empty pots on the pot management file based on the first tool selection condition, and the tools are further insufficient. In such a case, a damaged tool other than the standard installation tool is selected as a removal target, and a shortage of tools is assigned in place of the damaged tool. Tool selection condition first processing step of selecting a tool that is present as an object to be removed and allocating an insufficient tool instead of the damaged tool, and assigning the allocation result in the tool selection condition first processing step to the pot management file. A second storage step to be reflected, and comparing the total with the allocation result of the first processing step of the tool selection condition. A second determining step of determining whether the number of tools is excessive or insufficient, and if it is determined in the second determining step that the number of tools is insufficient, a normal tool other than the standard mounting tool is used based on the second tool selection condition. A tool selection condition second processing step for selecting a tool whose number exceeds a predetermined number of times and a tool whose remaining usage time exceeds a predetermined time as a removal target, and a tool to be removed selected in the tool selection condition second processing step And a first display step of displaying a tool. 14. The tool selection processing step according to claim 13, wherein, among the removal target tools selected in the tool selection condition second processing step, a shortage tool is allocated in place of the instruction input tool. A third storage step of reflecting the allocation result in the selection processing step to the pot management file in addition to the allocation result in the tool selection condition first processing step, and the allocation result in the tool selection processing step to the tool selection condition first processing A second display step of displaying the result in addition to the allocation result in the step.