Tool management system and tool management device

Abstract

The invention provides a tool management system and a tool management device. A tool management device of a tool management system is provided with a tool information database, a combined tool ID generation unit, a data search unit, and a combined tool determination unit. An information input / output terminal is provided with a reader. The combined tool determination unit determines that the tool holder is holding the cutting tool when reading the tool holder ID in a state in which the combined tool state flag is open, and determines that the tool holder does not hold the cutting tool when reading the tool holder ID in a state in which the combined tool state flag is closed, and determines that the tool holder is not holding the cutting tool when reading the tool holder ID in a state in which the combined tool state flag is closed. The data retrieval unit retrieves a combined tool ID including the read tool holder ID and refers to information related to the same combined tool when the tool holder is holding the cutting tool, and retrieves the read tool holder ID and refers to information related to the same tool when the tool holder does not hold the cutting tool.

Description

Technical Field

[0001] The present disclosure relates to a system and an apparatus for managing a tool used in machining of a machine tool. Background Art

[0002] In machine tools that perform cutting operations, such as Figure 2 As shown in (A), the cutting tool is used by assembling a cutting tool t such as an end mill and a drill bit to a holder called a tool holder HL. Here, the cutting tool AS in which the cutting tool t is assembled to the tool holder HL is called a "combination tool AS". Regarding the management of the combination tool AS, as disclosed in Japanese Patent Gazette No. 2021-142613 (Patent Document 1), the following method is known: code information for determining a tool ID (tool number) as a unique identifier is assigned to the tool holder HL, and the tool number is associated with the processing number used in the processing program for management.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2021-142613 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In a machine tool, when a combination tool used in the processing of a workpiece is used for the processing of other workpieces, in order to avoid interference between the workpiece and the cutting tool, Figure 2 The protrusion of the cutting tool t is adjusted as shown in (B). According to the invention of Patent Document 1, it is necessary to measure the tool length again after adjustment and change the correction value information, but since the tool ID and tool number are the same, they are overwritten. As a result, the protrusion and correction value of the previous combined tool disappear. For example, in the case of repeated processing of a previously processed workpiece, since the tool ID and tool number are the same, it is possible that an incorrect correction value is used and interference occurs.

[0008] In addition, not only to avoid interference, but also for processing reasons, Figure 3 The cutting tool t1 of (A) is changed to the same diameter but different cutting length. Figure 3 The tool t2 of (B) is the same, but in this case, the tool ID and tool number are also the same. Figure 4 The same applies to the case where a different type of cutting tool t3 is used.

[0009] If the tool ID and tool number are to be changed, the code information assigned to the tool holder HL needs to be changed, which is troublesome. Furthermore, by changing the code information, the history becomes unclear, making it difficult to cope with repeated processing. Without changing the code information, in order to set a combination tool AS with a different tool ID and tool number, it is necessary to prepare another set of tool holder HL and cutting tool t, which is costly.

[0010] On the other hand, in the operation of the combined tool AS in multiple machine tools, if the specifications of the tool holder HL are the same, the combined tool AS can be shared among multiple machine tools, but the tool number is determined for each machine tool. It is also possible to use a common tool number operation system in multiple machine tools, as in Patent Document 1, and it is also possible to use it as a constant tool number. However, due to the specification restrictions of each machine tool, there are many cases where the number of digits of the tool number that can be used is different, which causes obstacles.

[0011] Therefore, an object of the present disclosure is to provide a tool management system and a tool management device that facilitates the management of combined tools, can reliably store the changed information even if the structure of the combined tools is changed, and can handle repeated processing in a short time.

[0012] Means for solving problems

[0013] In order to achieve the above-mentioned purpose, the first structure of the present disclosure is a tool management system, which includes:

[0014] A tool management device that manages a combination tool consisting of a tool holder and a cutting tool mounted on the tool holder; and

[0015] an information input / output terminal capable of inputting and outputting data to the tool management device,

[0016] in,

[0017] The tool management device comprises:

[0018] A tool information database, which stores at least the following: a tool holder ID, which is inherent identification information directly mounted on the tool holder; tool holder information, which is information related to the tool holder; a combination tool ID, which is inherent identification information of the combination tool; machine tool information, which is information related to the machine tool using the combination tool; workpiece information, which is information related to the workpiece processed using the combination tool; cutting tool information, which is information related to the cutting tool; the protrusion amount of the cutting tool in the combination tool relative to the tool holder; a combination tool status flag, which is turned on when the cutting tool is mounted on the tool holder and turned off when the cutting tool is removed;

[0019] a combined tool ID generating unit that generates the combined tool ID in a record including the tool holder ID in the tool information database when the cutting tool is mounted on the tool holder;

[0020] a data retrieval unit that retrieves required information from the tool information database; and

[0021] a combined tool determination unit for determining whether the tool holder holds the cutting tool,

[0022] The information input / output terminal includes an input unit for the tool holder ID.

[0023] When the tool holder ID is input through the input unit in the on state of the combined tool status flag, the combined tool determination unit determines that the tool holder is holding the cutting tool. On the other hand, when the tool holder ID is input through the input unit in the off state of the combined tool status flag, the combined tool determination unit determines that the tool holder is not holding the cutting tool.

[0024] When the combination tool determination unit determines that the tool holder is holding the cutting tool, the data retrieval unit retrieves the combination tool ID including the input tool holder ID and is able to refer to information related to the same combination tool. On the other hand, when the combination tool determination unit determines that the tool holder is not holding the cutting tool, the data retrieval unit retrieves the input tool holder ID and is able to refer to information related to the same tool holder.

[0025] Another aspect of the first configuration is that in the above configuration, when the tool holder ID is input, the combined tool determination unit refers to the latest record among the records including the corresponding tool holder ID.

[0026] Another aspect of the first configuration is that in the above configuration, when the configuration of the combined tool is changed, the combined tool ID generating unit adds a record in which the combined tool ID and the blade information are changed to the tool information database.

[0027] Another aspect of the first configuration is that in the above configuration, when the protrusion amount is changed in the combined tool, the combined tool ID generating unit adds a record in which the combined tool ID and the protrusion amount are changed.

[0028] Another embodiment of the first structure is that in the above structure, the tool management system further includes a tool number generating unit, which assigns a tool number for determining the combination tool in the machine tool, and when the data retrieval unit retrieves the combination tool composed of the same tool holder and the same cutting tool, the tool number generating unit can assign the same tool number as the retrieved combination tool.

[0029] Another aspect of the first configuration is that, in the above configuration, the tool number generating unit can set the tool number for each of the machine tools.

[0030] Another aspect of the first structure is that in the above structure, the data search unit can search for the combined tool used for machining for each workpiece.

[0031] In order to achieve the above-mentioned object, the second structure of the present disclosure is a tool management device, which manages a combination tool, the combination tool consisting of a tool holder and a cutting tool mounted on the tool holder,

[0032] The tool management device comprises:

[0033] A tool information database, which stores at least the following: a tool holder ID, which is inherent identification information directly mounted on the tool holder; tool holder information, which is information related to the tool holder; a combination tool ID, which is inherent identification information of the combination tool; machine tool information, which is information related to the machine tool using the combination tool; workpiece information, which is information related to the workpiece processed using the combination tool; cutting tool information, which is information related to the cutting tool; the protrusion amount of the cutting tool in the combination tool relative to the tool holder; a combination tool status flag, which is turned on when the cutting tool is mounted on the tool holder and turned off when the cutting tool is removed;

[0034] an information input / output unit including an input unit for the tool holder ID and capable of inputting and outputting various data to and from the tool information database;

[0035] a combined tool ID generating unit that generates the combined tool ID in a record including the tool holder ID in the tool information database when the cutting tool is mounted on the tool holder;

[0036] a data retrieval unit that retrieves required information from the tool information database; and

[0037] a combined tool determination unit for determining whether the tool holder holds the cutting tool,

[0038] When the tool holder ID is input through the input unit in the on state of the combined tool status flag, the combined tool determination unit determines that the tool holder is holding the cutting tool. On the other hand, when the tool holder ID is input through the input unit in the off state of the combined tool status flag, the combined tool determination unit determines that the tool holder is not holding the cutting tool.

[0039] When the combination tool determination unit determines that the tool holder is holding the cutting tool, the data retrieval unit retrieves the combination tool ID including the input tool holder ID and is able to refer to information related to the same combination tool. On the other hand, when the combination tool determination unit determines that the tool holder is not holding the cutting tool, the input tool holder ID is retrieved and is able to refer to information related to the same tool holder.

[0040] Effects of the Invention

[0041] According to the present disclosure, when the combined tool status flag is turned on, the combined tool ID is referenced, and when the combined tool status flag is turned off, the tool holder ID is referenced, so that the management of the combined tool becomes easy, and even if the structure of the combined tool is changed, the changed information can be reliably saved. Therefore, the combined tool used in the workpiece with processing performance can be grasped, and the response time for repeated processing can be shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is the structural diagram of the tool management system.

[0043] Figure 2 This is a diagram for explaining how to adjust the protrusion of the cutting tool. Figure 2 (A) indicates before adjustment. Figure 2 (B) indicates after adjustment.

[0044] Figure 3 This is an illustration of changing to a cutting tool with the same diameter but different blade length. Figure 3 (A) indicates before the change. Figure 3 (B) indicates after the change.

[0045] Figure 4 This is an illustration of when changing to a different type of cutting tool.

[0046] Figure 5 This is a flowchart of information processing when the cutting tool is mounted on the tool holder.

[0047] Figure 6 This is a flow chart of information processing when a cutting tool is removed from a tool holder.

[0048] Figure 7 This is a flowchart of information processing when searching for history related to combined tools.

[0049] Figure 8 This is a structural diagram showing a modified example of the tool management system.

[0050] [Explanation of Reference Numerals]

[0051] S·Tool management system, 1··Tool management device, 2··Information input and output terminal, 3··Network, 4··Automatic identification label making device, 5··Tool presetting device, 6··Machine tool, 7··Internet, 11··Tool information database, 12··Device side communication unit, 13··Combination tool ID generation unit, 14··Data retrieval unit, 15··Tool number generation unit, 16··Combination tool determination unit, 17··Identifier generation unit, 21··Terminal side communication unit, 22··Input unit, 23··Reader, 111··Tool holder ID, 112··Tool holder information, 113··Combination tool ID, 114··Machine tool information, 115··Workpiece information, 116··Cutting tool information, 117··Temporary protrusion amount, 118··Tool number, 119··Combination tool status flag, AS··Combination tool, HL··Tool holder, t··Cutting tool. DETAILED DESCRIPTION

[0052] Hereinafter, embodiments of the present disclosure will be described based on the drawings.

[0053] Figure 1 1 is a structural diagram showing an example of a tool management system according to a first structure of the present disclosure.

[0054] The tool management system S includes a tool management device 1, an information input / output terminal 2, and a network 3, and manages the tool holder HL and the assembly tool AS to which unique identification information is given.

[0055] The tool management device 1 includes a tool information database 11, a device-side communication unit 12, a combined tool ID generation unit 13, a data search unit 14, a tool number generation unit 15, and a combined tool determination unit 16 as structural units. The tool management device 1 is configured to include a CPU and a memory connected to the CPU, and the operations of the combined tool ID generation unit 13, the data search unit 14, the tool number generation unit 15, and the combined tool determination unit 16 are realized by these.

[0056] In the tool information database 11, as data examples, there are stored a tool holder ID 111, information related to the tool holder HL, namely, tool holder information 112, a combination tool ID 113, information related to a machine tool using the combination tool AS, namely, machine tool information 114, information related to a workpiece processed using the combination tool AS, namely, workpiece information 115, information related to the cutting tool t, namely, cutting tool information 116, a protrusion amount of the cutting tool t relative to the tool holder HL, namely, a temporary protrusion amount 117, a tool number 118, and a combination tool status mark 119.

[0057] The combined tool ID 113 is a unique number used in the system S and is automatically generated by the combined tool ID generator 13 when the combined tool AS is manufactured by attaching the cutting tool t to the tool holder HL. The combined tool ID 113 can be automatically generated even if either the tool holder HL or the cutting tool t is changed or the protrusion amount of the cutting tool t is changed.

[0058] The tool number 118 is a number arbitrarily assigned by an operator in order to store the combined tool AS in a tool magazine of the ATC in a machine tool and then call it out when the combined tool AS is mounted at a standby position or on a spindle, and the tool number is assigned for each machine tool.

[0059] In the tool holder HL, tool holder information 112 including the model number is registered in the tool information database 11, and a tool holder ID 111 is assigned as the unique identification information of the tool holder HL. The tool holder ID 111 is installed on the tool holder HL as an automatic identification tag, for example, in the form of a one-dimensional barcode, a two-dimensional barcode, RFID (Radio Frequency Identification) or text.

[0060] The information input / output terminal 2 includes a terminal-side communication unit 21 and an input unit 22. The input unit 22 includes a reader 23 for reading an automatic identification tag mounted on the tool holder HL. The reader 23 is an example of an input unit disclosed herein. The information input / output terminal 2 may also include a display unit, a storage device, and a central processing unit, such as a personal computer or a mobile terminal. The information input / output terminal 2 may also perform input and communication like a barcode reader, and the input data may be interpreted by other personal computers connected via a network (not shown). In addition, there may be multiple information input / output terminals 2.

[0061] The following is based on Figure 5 to Figure 7 The flowchart of FIG. 1 illustrates information processing of the tool management device 1 .

[0062] Figure 5 The information processing when the cutting tool t is mounted on the tool holder HL is shown.

[0063] When the cutting tool t is mounted on the tool holder HL, according to the instruction from the operator via the information input / output terminal 2, in S11, the combined tool ID generating unit 13 adds a new record to the tool information database 11, and in S12, generates a combined tool ID 113 as the unique identification information of the combined tool AS.

[0064] Next, in S13 , machine tool information 114 including the name and specifications of the machine tool for processing the workpiece is registered.

[0065] Next, in S14, workpiece information 115 including the product number, material, and original contractor information is registered.

[0066] Next, in S15 , the tool information 116 including the tool diameter and the tool type is registered.

[0067] Next, in S16, a temporary protrusion amount 117 serving as a reference protrusion amount when the cutting tool t is mounted on the tool holder HL is registered. The information of S13 to S16 is inputted from the information input / output terminal 2 and stored in a record added to the tool information database 11.

[0068] In order to facilitate management when there are a plurality of machine tools, the machine tool information 114 may include a machine tool information table in which the machine information is stored in association with the machine ID. Similarly, the workpiece information 115 may include a workpiece information table in which the workpiece information is stored in association with the workpiece ID.

[0069] The information added to the record of the tool information database 11 is compared and retrieved by the data search unit 14 with the past records. In S17, it is determined whether the tool holder information 112 and the cutting tool information 116 of the past records are consistent, that is, whether the combined tool AS of the same structure exists in the history. Here, when it is confirmed that there is a history of the same combined tool AS, in S18, the operator selects whether to set the same tool number as the combined tool AS. If it is selected to set the same tool number, in S19, the same tool number 118 is automatically assigned in the tool number generation unit 15 and stored in the record.

[0070] On the other hand, if it is confirmed in the identification of S17 that the combined tool AS of the same structure is not in the history, or in the identification of S18, it is selected not to set the tool number that is the same as the combined tool AS even if the combined tool AS of the same structure exists in the history, then in the identification of S20, it is selected whether to automatically assign a new tool number. Here, if the operator chooses to automatically assign a tool number, in S19, the tool number generation unit 15 automatically assigns a tool number 118. Otherwise, in S21, the operator assigns an arbitrary tool number 118 (for example, a branch number of the original tool number) and stores it in the record. The tool number 118 is managed in association with the combined tool ID 113 and the machine tool information 114 in the machine tool information data table, for example, and can be numbered separately for each machine tool.

[0071] After the tool number 118 is assigned in this way, when the cutting tool t is mounted on the tool holder HL in S22, the combined tool state flag 119 is turned on in S23. With regard to the combined tool state flag 119, the combined tool ID generating unit 13 automatically turns on the combined tool state flag 119 (not shown) by determining that the tool holder HL is physically connected to the cutting tool t using a camera or a sensor. However, the combined tool state flag 119 may also be turned on manually by an operator.

[0072] Figure 6 The information processing when the cutting tool t is removed from the tool holder HL is shown. When the cutting tool t is removed from the tool holder HL in S31, the combined tool state flag 119 is turned off in S32. The combined tool state flag 119 can be turned off automatically or manually.

[0073] Figure 7 This is a flowchart of information processing when searching for the history related to the combined tool AS.

[0074] In S41, first, the unique identification information of the tool holder HL is read by the reader 23 of the input unit 22. The read unique identification information is input to the combined tool determination unit 16 of the tool management device 1.

[0075] Next, in S42 , the combined tool determination unit 16 refers to the latest record among the records including the corresponding tool holder ID 111 .

[0076] Next, in S43, it is determined whether the combined tool state flag 119 is turned on. Here, when it is confirmed that the combined tool state flag 119 is turned on, that is, the cutting tool t is installed in the tool holder HL, in S44, the inherent identification information becomes the combined tool ID 113, and the tool holder information 112, machine tool information 114, workpiece information 115, cutting tool information 116, temporary protrusion amount 117, and tool number 118 of the same record are referenced.

[0077] On the other hand, if it is confirmed in S43 that the combined tool state flag 119 is off, that is, the cutting tool t is not mounted on the tool holder HL, in S45 the unique identification information is the tool holder ID 111 and the tool holder information 112 is referenced.

[0078] As a result of the reference, if there is a tool holder HL without a cutting tool t, it is possible to combine with the desired cutting tool t to re-make the combined tool AS. In this case, including the case of changing the protrusion amount of the cutting tool t or replacing the cutting tool t, Figure 5 Information processing. That is, a new record is added (S11), a new combination tool ID 113 is generated (S12), and the machine tool information and workpiece information are registered (S13, S14). Then, the tool holder information 112 and the cutting tool information 116 (S15) of the record of the combination tool ID 113 containing the change source are inherited, a new temporary protrusion amount 117 (S16) is registered, a new tool number 118 is assigned, and the combination tool status flag 119 is turned on (S17~S23). The information of the combination tool AS with the current status of the structure changed in this way is newly saved.

[0079] Therefore, when repeating machining of a previously machined workpiece, the data search unit 14 searches for the tool holder information 112 , cutting tool information 116 , temporary protrusion amount 117 , and tool number 118 associated with the workpiece information 115 , thereby enabling machining preparation in a short time.

[0080] In this way, in the tool management system S and the tool management device 1 of the above-mentioned method, when the tool holder ID 111 is read by the reader 23 in the open state of the combined tool status mark 119, the combined tool judgment unit 16 judges that the tool holder HL is holding the cutting tool t. On the other hand, when the tool holder ID 111 is read by the reader 23 in the closed state of the combined tool status mark 119, the combined tool judgment unit 16 judges that the tool holder HL is not holding the cutting tool t.

[0081] Furthermore, when the combined tool determination unit 16 determines that the tool holder HL is holding the cutting tool t, the data retrieval unit 14 retrieves the combined tool ID 113 including the read tool holder ID 111 and is able to refer to information related to the same combined tool AS. On the other hand, when the combined tool determination unit 16 determines that the tool holder HL is not holding the cutting tool t, the data retrieval unit 14 retrieves the read tool holder ID 111 and is able to refer to information related to the same tool holder HL.

[0082] According to this structure, the management of the combined tool AS becomes easy, and even if the structure of the combined tool AS is changed, the changed information can be reliably saved. Therefore, the combined tool AS and its structure, tool number, and protrusion amount used in the workpiece with processing performance can be grasped, and the response time for repeated processing can be shortened.

[0083] Figure 8 An example of changes to the tool management system S is shown.

[0084] Here, the tool management device 1 is provided with an identifier generation unit 17, and the identifier generation unit 17 can automatically generate unique identification information. Figure 1 The function of the repeated structure is the same as described above.

[0085] The tool information database 11 can store tool correction values ​​120 obtained by measuring tools, tool cup information 121 including tool cup numbers of tool magazines of machine tools, tool life information 122 , cutting conditions 123 , and tool specifications 124 .

[0086] An automatic identification label making device 4 is connected to the network 3. For example, the automatic identification label making device 4 automatically generates a one-dimensional barcode, a two-dimensional barcode, RFID or text as the tool holder ID 111 and installs it on the tool holder HL.

[0087] In addition, a tool presetter 5 and a machine tool 6 with a numerical control device are connected to the network 3. The machine tool 6 is provided with a reader for reading the automatic identification tag of the tool holder HL when the combined tool AS is installed in the tool magazine. Therefore, when the combined tool AS is installed in the tool magazine, the tool cup information 121 including the tool cup number indicating the installation position can be obtained, and the tool correction value 120 measured by the tool presetter 5 can be accurately input to the machine tool 6. In addition, by obtaining the life information 122 from the machine tool 6 and managing it in association with the combined tool ID 113, appropriate life management can be performed.

[0088] Furthermore, by associating the cutting conditions 123, the tool specifications 124 and the combined tool ID 113 for management, it is possible to set appropriate cutting conditions when generating a program and to cooperate with an automated system using a robot. By connecting the network 3 to the Internet 7, the latest and accurate information can always be obtained.

[0089] In addition, in the above-mentioned method and the variation example, the information input-output terminal serving as the information input-output unit is separately provided from the tool management device, and the information input-output terminal and the tool management device are connected via a network to form a tool management system. However, as a tool management device of the second structure disclosed in the present invention, the information input-output unit may also be provided in the tool management device itself so as to be able to directly input and output data.

[0090] In addition, in the above-mentioned method and the modification example, when reading the inherent identification information of the tool holder, when the combined tool state flag is off, the tool holder without a tool installed is combined with the desired tool to produce a combined tool. However, if the combined tool is remade in this way, it is necessary to confirm whether there is no problem in the processing.

[0091] Therefore, in the case of repeated processing, the combined tool ID used in the processing can also be retrieved from the workpiece information, and the desired cutting tool can be installed on the same tool holder used in the combined tool. By setting it to the same structure as the combined tool with actual performance, the confirmation operation can be omitted.

[0092] In the above-mentioned embodiment and the modification, the reader provided in the input unit is used as the input means, but the input unit is not limited to the reader, and may be a keyboard provided in the input unit, etc. That is, when the inherent identification information is given by numbers or characters, the numbers or the like can be inputted using a keyboard, etc.

[0093] On the other hand, in the above-mentioned method, when it is confirmed that the cutting tool is not attached to the tool holder, the unique identification information becomes the tool holder ID and the tool holder information is referred to. However, if the consumption of data size is not desired, the combined tool ID may be generated at this timing.

Claims

1. A tool management system, comprising: A tool management device that manages a combination tool consisting of a tool holder and a cutting tool mounted on the tool holder; as well as an information input / output terminal capable of inputting and outputting data to the tool management device, The tool management system is characterized in that: The tool management device comprises: A tool information database, which stores at least the following: a tool holder ID, which is inherent identification information directly mounted on the tool holder; tool holder information, which is information related to the tool holder; a combination tool ID, which is inherent identification information of the combination tool; machine tool information, which is information related to the machine tool using the combination tool; workpiece information, which is information related to the workpiece processed using the combination tool; cutting tool information, which is information related to the cutting tool; the protrusion amount of the cutting tool in the combination tool relative to the tool holder; a combination tool status flag, which is turned on when the cutting tool is mounted on the tool holder and turned off when the cutting tool is removed; a combined tool ID generating unit that generates the combined tool ID in a record including the tool holder ID in the tool information database when the cutting tool is mounted on the tool holder; A data retrieval unit, which retrieves required information from the tool information database; as well as a combined tool determination unit for determining whether the tool holder holds the cutting tool, The information input / output terminal includes an input unit for the tool holder ID. When the tool holder ID is input through the input unit in the on state of the combined tool status flag, the combined tool determination unit determines that the tool holder is holding the cutting tool. On the other hand, when the tool holder ID is input through the input unit in the off state of the combined tool status flag, the combined tool determination unit determines that the tool holder is not holding the cutting tool. When the combination tool determination unit determines that the tool holder is holding the cutting tool, the data retrieval unit retrieves the combination tool ID including the input tool holder ID and is able to refer to information related to the same combination tool. On the other hand, when the combination tool determination unit determines that the tool holder is not holding the cutting tool, the data retrieval unit retrieves the input tool holder ID and is able to refer to information related to the same tool holder.

2. The tool management system according to claim 1, characterized in that: When the tool holder ID is input, the combined tool determination unit refers to the latest record among the records including the corresponding tool holder ID.

3. The tool management system according to claim 1 or 2, characterized in that: When the structure of the combined tool is changed, the combined tool ID generating unit adds a record in which the combined tool ID and the blade information are changed to the tool information database.

4. The tool management system according to claim 3, characterized in that: When the protrusion amount is changed in the combined tool, the combined tool ID generating unit adds a record in which the combined tool ID and the protrusion amount are changed.

5. The tool management system according to claim 1 or 2, characterized in that: The tool management system further includes a tool number generating unit that assigns a tool number for identification in a machine tool to the combined tool. When the combined tool composed of the same tool holder and the same cutting tool is found by the data search unit, the tool number generation unit can assign the same tool number as that of the combined tool found.

6. The tool management system according to claim 5, characterized in that: The tool number generating unit may set the tool number for each of the machine tools.

7. The tool management system according to claim 5, characterized in that: The data search unit can search for the combined tool used in machining for each workpiece.

8. A tool management device for managing a combination tool, the combination tool consisting of a tool holder and a cutting tool mounted on the tool holder, characterized in that: The tool management device comprises: A tool information database, which stores at least the following: a tool holder ID, which is inherent identification information directly mounted on the tool holder; tool holder information, which is information related to the tool holder; a combination tool ID, which is inherent identification information of the combination tool; machine tool information, which is information related to the machine tool using the combination tool; workpiece information, which is information related to the workpiece processed using the combination tool; cutting tool information, which is information related to the cutting tool; and a protrusion amount of the cutting tool in the combination tool relative to the tool holder. a combined tool status flag, which is turned on when the cutting tool is installed in the tool holder and turned off when the cutting tool is removed; an information input / output unit including an input unit for the tool holder ID and capable of inputting and outputting various data to and from the tool information database; a combined tool ID generating unit that generates the combined tool ID in a record including the tool holder ID in the tool information database when the cutting tool is mounted on the tool holder; a data retrieval unit that retrieves required information from the tool information database; as well as a combined tool determination unit for determining whether the tool holder holds the cutting tool, When the tool holder ID is input through the input unit in the on state of the combined tool status flag, the combined tool determination unit determines that the tool holder is holding the cutting tool. On the other hand, when the tool holder ID is input through the input unit in the off state of the combined tool status flag, the combined tool determination unit determines that the tool holder is not holding the cutting tool. When the combination tool determination unit determines that the tool holder is holding the cutting tool, the data retrieval unit retrieves the combination tool ID including the input tool holder ID and is able to refer to information related to the same combination tool. On the other hand, when the combination tool determination unit determines that the tool holder is not holding the cutting tool, the input tool holder ID is retrieved and is able to refer to information related to the same tool holder.

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