JP2009297868A - Tool rearranging method for tool magazine device, and device for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool rearranging method which facilitates rearrangement of tools only by designating a T command value of a tool group and an address command value of a main magazine, and implements exchange of a tool in the tool group for a spare tool when the life of the tool expires. <P>SOLUTION: According to the tool rearranging method, during execution of a machining step, the T command value of the tool group to be arranged in the main magazine and the address command value of the main magazine are designated for each tool group. The tool of the designated tool group corresponding to the T command value, which is called up from a sub-magazine during the machining step, for use in machining of a workpiece, is rearranged so as to be stored in a new address of the main magazine designated by the address command value. When the life of the tool expires, the spare tool in the tool group is rearranged so as to be stored in the new address of the main magazine, and thereafter the expired tool is exchanged for the spare tool by an ATC. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention improves the productivity of machine tools in a tool magazine apparatus in which one main magazine is arranged at a position close to an automatic tool changer (hereinafter referred to as ATC) and a sub magazine is arranged at a position far from the ATC. The present invention relates to a method and an apparatus for rearranging a tool in order to perform the operation.

In a machine tool provided with a tool magazine device, the tool is exchanged between the tool magazine device and the machine tool by ATC. As the tool magazine apparatus, there is an apparatus having a configuration including a main magazine and a sub-magazine arranged at positions close to the ATC. The sub-magazine is disposed at a position far from the ATC, and a tool can be conveyed to the main magazine.
An address is assigned to each tool stored in the tool magazine apparatus, and each tool is stored in a tool storage unit at the address. The “address” of the tool is a so-called address, and is indicated by the number (for example, pot number) of the tool storage unit in which the tool is stored.

In the above-described tool magazine apparatus, processing may be performed using a tool stored in a sub magazine. In this case, when a tool in the sub-magazine is called, this tool once passes through the main magazine and is conveyed to the tool change position.
Thereafter, this tool is exchanged with the machine tool by the ATC and used for machining the workpiece. The used tool is exchanged by the ATC, and once passes through the main magazine from the tool exchange position, it returns to the tool storage unit at the address of the sub magazine.
As described above, when the tool of the sub magazine is used, the path for transporting the tool becomes long and the movement takes time. As a result, when calling the tool of the sub magazine, the machine tool sometimes stops the machining operation and waits for the arrival of the tool.

Therefore, in FIG. 11 and FIG. 12 of Patent Document 1 (Japanese Patent Laid-Open No. 2003-145379), a tool rearranging method in a plurality of tool magazines is proposed.
In this method, a reciprocating operation of a mechanism such as a pot slider provided between adjacent tool magazines for delivering a standby tool and a circular movement of the standby tool in each tool magazine are repeated by an NC program. Thereby, arrangement | positioning of the standby tool in each tool magazine is rearranged freely.

JP 2003-145379 A

However, in the method described in Patent Document 1, a tool to be rearranged and its address (pot number) must be selected and registered in the NC program in advance for one tool magazine and the other tool magazine. I must.
For this purpose, all tools to be rearranged and their addresses must be registered accurately in the NC program so that there is no mistake. This registration work is complicated and a high level of skill is required.
Further, in this prior art, the tool rearrangement is performed by a plurality of tool magazines alone without considering the cooperation between the tool rearrangement operation between adjacent tool magazines and the machining operation of the machine tool. . As a result, there is a possibility that a situation in which the machining operation of the machine tool must be stopped for tool rearrangement.

  The present invention has been made to solve such a problem, and it is not necessary to designate the T command value of each tool for each tool in order to rearrange the tools in the tool group performing the same machining. If the tool group T command value and the main magazine address command value are specified, the tool can be easily replaced, and the tool can be replaced with a spare tool when the tool in the tool group reaches the end of its life. An object of the present invention is to provide a tool arrangement changing method and apparatus in a magazine apparatus.

  In order to achieve the above-described object, according to the present invention, a T command value of a tool (or a tool group) initially stored in a sub magazine but desired to be arranged in the main magazine and a new address command value of the main magazine are obtained. Of these, both the T command value and the address command value (or only the T command value) are manually input by the operator or designated by a program.

A tool rearrangement method in a tool magazine apparatus according to a first aspect of the present invention comprises: a main magazine disposed at a position close to an automatic tool changer for exchanging tools with a machine tool; and the automatic tool changer. A tool rearrangement method in a tool magazine apparatus having one or a plurality of sub-magazines arranged at a distant position and capable of transporting the tool to the main magazine, wherein a plurality of tools are each processed in one processing step. The workpiece is stored in the sub-magazine before starting the machining of the workpiece, but corresponds to the T command value of at least one tool to be placed in the main magazine and the T command value during the one machining step. The address command value of the main magazine is specified for each tool and is called from the sub magazine in the first machining step and used for machining the first workpiece. The designated tool related to the T command value is changed to be stored at the new address of the main magazine designated by the address command value when the tool data is changed, and the one machining is performed. After the processing of the first workpiece among the plurality of workpieces to be processed respectively in the process, the designated tool is moved between the main magazine and the machine tool by the automatic tool changer. To be replaced.
A tool rearrangement method in a tool magazine apparatus according to a second aspect of the present invention comprises: a main magazine disposed at a position close to an automatic tool changer for exchanging tools with a machine tool; and the automatic tool changer. A tool rearrangement method in a tool magazine apparatus having one or a plurality of sub-magazines arranged at a distant position and capable of transporting the tool to the main magazine, wherein a plurality of tools are each processed in one processing step. The workpiece is stored in the sub magazine before the machining of the workpiece, but during the one machining step, the T command value of at least one tool to be placed in the main magazine is designated, and the T command value is set to this T command value. The new address of the corresponding main magazine is automatically selected and is called from the sub magazine in the one machining step and used for machining the workpiece. The designated tool according to the T command value is rearranged so as to be stored at the new address of the main magazine when the tool data is changed. Thereafter, the designated tool is replaced with the automatic tool changer. An apparatus exchanges between the main magazine and the machine tool.
A tool rearrangement method in a tool magazine apparatus according to a third aspect of the present invention includes: a main magazine disposed at a position close to an automatic tool changer for exchanging tools with a machine tool; and the automatic tool changer. A tool rearrangement method in a tool magazine apparatus having one or a plurality of sub-magazines arranged at a distant position and capable of transporting the tool to the main magazine, wherein a plurality of tools are each processed in one processing step. T command value of at least one tool group that is stored in the sub-magazine before starting the machining of the workpiece but includes the tool to be placed in the main magazine during the one machining step and performs the same machining And an address command value of the main magazine corresponding to the T command value for each tool group, and the sub-magazine The tool in the designated tool group which is called from the T command value used for machining the workpiece is changed to the main magazine designated by the address command value by changing the tool data. After that, the tool is changed between the main magazine and the machine tool by the automatic tool changer so that the tool in the designated tool group has a life span. Then, the spare tool in the designated tool group including the life tool is rearranged so as to be stored at the new address of the main magazine by changing the tool data. The spare tool is exchanged between the main magazine and the machine tool by the automatic tool changer.
A tool rearrangement device according to a first aspect of the present invention includes a main magazine disposed at a position close to an automatic tool changer for exchanging tools with a machine tool, and a distant position from the automatic tool changer. A tool rearrangement device in a tool magazine device having one or a plurality of sub-magazines capable of transporting the tool to a main magazine, which receives a T command from an NC device and controls the tool magazine device An apparatus control unit, a tool data storage unit that stores data relating to the tool, and a plurality of workpieces that are respectively processed in one processing step are stored in the sub-magazine before starting the processing. During the process, the T command value of at least one tool to be placed in the main magazine, and the main magazine corresponding to the T command value. When the dress command value is specified for each tool, the command value storage unit that stores the T command value and the address command value, and the specification specified by the T command value stored in the command value storage unit A setting change unit that changes the tool data of the designated tool so that the tool is stored at a new address designated by the address command value of the main magazine, and the tool magazine device control unit The designated tool applied to the T command value that is called from the sub-magazine in the machining process and used for machining the first workpiece is designated by the address command value by changing the tool data. Repositioning so as to be stored at the new address of the main magazine, and processing of the first workpiece among the plurality of workpieces respectively processed in the one processing step is completed. After, the designated tool is to be exchanged between the machine tool and the main magazine by the automatic tool changer.
A tool rearrangement device according to a second aspect of the present invention includes a main magazine disposed at a position close to an automatic tool changer for exchanging tools with a machine tool, and a distant position from the automatic tool changer. A tool rearrangement device in a tool magazine apparatus having one or a plurality of sub-magazines capable of transporting the tool to the main magazine, which receives a T command from an NC apparatus and controls the tool magazine apparatus A tool magazine device control unit, a tool data storage unit for storing data relating to the tool, and the tool data are read out and stored in the sub magazine before the start of machining of a plurality of workpieces to be machined in one machining process. However, when the T command value of at least one tool to be placed in the main magazine is designated during the one machining step, A new address selection unit for automatically selecting a new address of the main magazine corresponding to the T command value; a command value storage unit for storing the T command value and the new address of the main magazine; Setting change for changing the tool data of the designated tool so that the designated tool related to the T command value stored in the storage unit is stored in the new address of the main magazine stored in the command value storage unit The tool magazine device controller is configured to receive the designated tool for the T command value that is called from the sub-magazine and used for machining the workpiece in the one machining step. By being changed, it is rearranged so that it is stored in the new address of the main magazine, and then the designated tool is moved by the automatic tool changer. It is to be exchanged between the machine tool and in the magazine.
A tool rearranging device according to a third aspect of the present invention includes a main magazine disposed at a position close to an automatic tool exchanging device for exchanging tools with a machine tool, and a distant position from the automatic tool exchanging device. A tool rearrangement device in a tool magazine apparatus having one or a plurality of sub-magazines capable of transporting the tool to the main magazine, which receives a T command from an NC apparatus and controls the tool magazine apparatus A tool magazine device control unit, a tool data storage unit that stores data related to tools, a tool group management unit that manages a plurality of tools that perform the same processing as a tool group, and a plurality of tools that are each processed in one processing step Although it is stored in the sub magazine before the processing of the object starts, it is desired to place it in the main magazine during the one processing step. When the T command value of at least one tool group including the tool and the address command value of the main magazine corresponding to the T command value are specified for each tool group, the T command value and the address command value are The stored command value storage unit and the tool in the designated tool group related to the T command value stored in the command value storage unit are stored in the new address specified by the address command value of the main magazine. The tool magazine device control unit is called from the sub-magazine in the one machining step and used for machining the workpiece. The main magazine designated by the address command value by changing the tool data of the tool in the designated tool group related to the command value. The tool is rearranged to be stored at the new address, and thereafter, the tool is exchanged between the main magazine and the machine tool by the automatic tool changer, and the tool in the designated tool group reaches the end of its life. Then, the setting change unit changes the tool data of the spare tool so that the spare tool in the designated tool group including the life tool is stored in the new address of the main magazine, The tool magazine device control unit rearranges the spare tool stored in the sub magazine so as to be stored at the new address of the main magazine when the tool data is changed. The spare tool is exchanged between the main magazine and the machine tool by the automatic tool changer.
In the second aspect of the present invention, the new address selection unit sets a priority order based on a predetermined standard for the plurality of tool storage units of the main magazine, and the plurality of tool storage units of the main magazine according to the priority order. It is preferable to automatically select the new address from among them.
In the first to third aspects of the present invention, as a preferred embodiment, the tool magazine apparatus includes a plurality of end magazines connected to the one main magazine in which a plurality of tool storage portions connected endlessly and circularly move. It is a multiple tool magazine apparatus which has the one or a plurality of submagazines in which the tool storage part turns.
As another preferred embodiment, the tool magazine apparatus includes the one main magazine in which a plurality of tool storage portions are arranged in a matrix, and the one or a plurality of the plurality of tool storage portions in a matrix. A matrix type tool magazine apparatus having a sub magazine.

Note that “one machining step” in the present invention refers to a series of machining steps when machining one workpiece using a plurality of tools in sequence, as shown in the following three embodiments, for example. is there. For example, when 100 workpieces are machined identically, each workpiece is machined using 10 tools sequentially for one workpiece. In this case, a series of machining steps from the start of the first machining with the first tool to the completion of the last machining with the tenth tool is one machining step.
In addition, as another example of “one machining step” in the present invention, for example, a plurality of tools are sequentially used to alternately process one workpiece and another workpiece (that is, a plurality of types of workpieces). There are cases of a series of processing steps.
For example, when machining 100 small workpieces and 100 large workpieces alternately, 10 tools are used sequentially for machining small workpieces, and 20 tools are used for machining large workpieces. Assume that the tools are used sequentially. In this case, immediately after processing one small workpiece with the first tool, the first tool and the second tool for other types of processing on one large workpiece are sequentially processed. Next, immediately after the one small workpiece is machined with the second tool, the one large workpiece is further machined with the third tool and the fourth tool for further processing.
In this manner, small workpieces and large workpieces (a set of workpieces) are alternately processed using the tools sequentially. In this case, a series of machining steps from the start of machining a small workpiece with the first tool to the last machining of a large workpiece with the 20th tool for a large workpiece is a single machining step. is there.
Accordingly, the “first workpiece” in this case includes the first small workpiece and the first large workpiece (ie, the first set of workpieces).

  Since the tool rearrangement method and apparatus according to the present invention are configured as described above, the T command value of this tool must be specified for each tool one by one in order to rearrange the tools in the tool group performing the same machining. However, if the T command value of the tool group and the address command value of the main magazine are specified, the tool can be easily replaced, and if the tool in the tool group reaches the end of its life, it can be replaced with a spare tool. Can do.

Embodiments according to the present invention will be described below with reference to FIGS.
1 and 2 are schematic configuration diagrams of a double tool magazine device and a matrix type tool magazine device, respectively.
FIG. 3 is a block diagram of the tool rearrangement apparatus according to the first embodiment, and FIGS. 4 and 5 are flowcharts showing the procedure of the method. FIG. 6 is a block diagram of the tool rearrangement apparatus according to the second embodiment, and FIGS. 7 and 8 are flowcharts showing the procedure of the method. FIG. 9 is a block diagram of the tool rearrangement device according to the third embodiment, and FIGS. 10 and 11 are flowcharts showing the procedure of the method.
12A and 12B are explanatory diagrams showing examples of the display state of the tool layout screen, FIGS. 12C and 12D are explanatory diagrams showing examples of the tool group, and FIG. It is explanatory drawing which shows a part of process program.

In FIG. 1, a machine tool 1 is a machining center, a multi-task machine, a turning center, an NC lathe, a grinding machine, or the like. A tool 7 is mounted on the spindle 2 of the machine tool 1 to process a workpiece.
The machine tool 1 is provided with a double tool magazine device 3 (hereinafter referred to as a magazine device 3) as a tool magazine device for storing a plurality of tools 7. A tool 7 is exchanged between the magazine device 3 and the spindle 2 of the machine tool 1 by an ATC (automatic tool changer) 4. The present invention is applied to the magazine device 3.

The magazine device 3 has one main magazine 5 and one sub magazine 6. The main magazine 5 is disposed at a position close to the ATC 4. The sub magazine 6 is disposed at a position far from the ATC 4, and the tool 7 can be conveyed to the main magazine 5.
The tool magazine device may be a multiple tool magazine device. This apparatus is configured such that two or more sub-magazines 6 are connected in series (or in parallel), and the tool 7 can be conveyed between the sub-magazine and the main magazine 5.
In the main magazine 5 and the sub magazine 6, a plurality of tool storage portions 10 connected in an endless ring shape rotate.

In the main magazine 5, a magazine side stop position P1 and a spindle side standby position P2 are arranged for tool change. The tool 7 is guided by the transport rail 8 and can move between the magazine-side stop position P1 and the spindle-side standby position P2.
The tool exchange arm 9 of the ATC 4 can exchange the tool 7 between the spindle side standby position P2 and the spindle 2 by a turning operation and a reciprocating movement operation in the turning center axis direction.

Between the main magazine 5 and the sub magazine 6, a connection transport rail portion 11 is disposed. The tool 7 is guided by the connection conveyance rail portion 11 and can be moved between the main magazine 5 and the sub magazine 6 by a moving mechanism.
In the magazine apparatus 3, the tool 7 is stored in the tool storage unit 10 while being held in the pot. The tool 7 is attached to and detached from the tool storage unit 10 together with the pot 10 while being attached to the pot 10, and is transported to the spindle-side standby position P2. The tool change arm 9 attaches and detaches the tool 7 to and from the pot at the spindle side standby position P2.
In the magazine device 3, the tool 7 is attached to the pot, but the tool 7 may be directly attached to the tool storage unit 10 without providing the pot.

Each tool storage unit 10 is assigned a serial number. The same number (pot number) as that of the tool storage unit 10 is also assigned to the pot that holds the tool and is attached to the tool storage unit 10.
Each tool 7 is set with a location for storing the tool 7, that is, an address (the number of the tool storage unit 10, the number of the pot, etc.). For example, it is assumed that the address number of the tool (tool number: T11000) called by the T command “T11000” is “15”. In this case, the tool T11000 is stored in the “15th” tool storage unit 10 of the main magazine 5. The pot number of this tool storage unit is also “15”, which is the same as that of the tool storage unit.
The “T command” is a command for calling a tool for performing a specified machining and transporting the tool to the spindle standby position P2.

The present invention is also applicable to a matrix type tool magazine apparatus 3a (magazine apparatus 3a) as the tool magazine apparatus shown in FIG.
The magazine device 3a has one main magazine 5a and one or a plurality (here, one) sub-magazine 6a. Each of the main magazine 5a and the sub magazine 6a has a plurality of tool storage portions 10 arranged in a matrix in the vertical and horizontal directions.
The main magazine 5a is disposed at a position close to an ATC (automatic tool changer) 4a for exchanging tools with the machine tool 1. The sub magazine 6a is disposed at a position far from the ATC 4a, and can transport the tool to the main magazine 5a.

In the magazine apparatus 3a shown in FIG. 2, the area in which the tool storage units (pots) 10 from No. 1 to No. 40 are arranged is defined as the main magazine 5a. Further, an area in which the tool storage units 10 from No. 41 to No. 120 are arranged is defined as a sub magazine 6a.
In addition, the main magazine 5a should just be arrange | positioned in the position close | similar to ATC4a. Therefore, the position and shape of each area of the main magazine 5a and the sub-magazine 6a, the number of tool storage portions 10, etc. can be defined as appropriate.
In this way, the magazine device 3a is defined so as to be divided into an area of one main magazine 5a and an area of one (or a plurality) of sub-magazines 6a. As a result, the matrix-type tool magazine device 3a corresponds to the double tool magazine device (multiple tool magazine device) 3 shown in FIG. 1, and the present invention is applicable.

At the ATC 4a, a standby position P3 for waiting the tool for tool change is disposed. The ATC 4a exchanges the tool between the standby position P3 and the spindle 2 of the machine tool 1. The tool conveying device 12 conveys a tool between each tool storage unit 10 and the standby position P3.
The tool is conveyed by the tool conveying device 12 between the tool storage unit 10 of the main magazine 5a and the standby position P3. The tool is transported between the tool storage unit 10 of the sub magazine 6a and the standby position P3. Further, the tools are transported between the tool storage unit 10 of the main magazine 5a and the tool storage unit 10 of the sub magazine 6a.
Each tool storage unit 10 is provided with a pot for holding a tool. This pot is fixed to the tool storage unit 10. The pot may be configured not to be fixed to the tool storage unit 10 but to be transported to the standby position P3 while holding the tool.

In the following first to third embodiments, the magazine device 3 shown in FIG. 1 will be described as an example.
The magazine device 3 and the matrix type tool magazine device 3a are common in that the tool magazine device has a main magazine and a sub magazine. Therefore, the tool rearrangement method and apparatus according to the first to third embodiments can be applied to the matrix-type tool magazine apparatus 3a.

(First embodiment)
A tool rearrangement method and apparatus according to the first embodiment will be described with reference to FIGS. 1, 3 to 5, 12 </ b> A, and 13.
The machine tool 1 is controlled by an NC (Numerical Control) device 35. The NC device 35 includes a program storage unit that stores a machining program, and a program analysis unit that reads and analyzes the machining program from the program storage unit.
As shown in FIGS. 1 and 3, the tool rearrangement device 20 applied to the magazine device 3 includes a tool magazine device control unit 33 (hereinafter referred to as a magazine control unit 33) and data (tool data) related to tools. And a tool data storage unit 34 for storing the data. The magazine control unit 33 receives the T command from the NC device 35 and controls the magazine device 3.
The tool data stored in the tool data storage unit 34 includes a tool number, an address number in which the tool is stored (for example, a pot number), a tool size (large diameter tool, small diameter tool), tool type, tool life, and the like. .

Further, the tool rearrangement device 20 includes a command value storage unit 36 and a setting change unit 37. A plurality of workpieces to be machined in one machining process are stored in the sub-magazine 6 before starting machining. During this machining process, the T command value of at least one tool to be placed in the main magazine 5 is stored. And the address command value (for example, pot number) of the main magazine 5 corresponding to this T command value is designated for each tool.
The command value storage unit 36 stores the T command value and the address command value, and outputs them to the setting change unit 37 and the magazine control unit 33.
In addition, after “start of machining”, after the operation of the machine tool 1 is started, one type or a plurality of types of predetermined machining (including the case of machining a plurality of workpieces in other machining steps) are performed, There are a case before a plurality of workpieces are each processed in one processing step (first case) and a case before the operation of the machine tool 1 is started (second case).
The contents of “Before starting machining” are the same as in the first to third embodiments.

A signal is output from the magazine control unit 33 to the setting change unit 37. Then, the setting change unit 37 stores the designated tool designated by the T command value stored in the command value storage unit 36 at a new address (new address) designated by the address command value of the main magazine 5. Change the tool data of the specified tool.
That is, the setting changing unit 37 changes the current address of the designated tool (sub magazine 6 address) to the new address of the main magazine 5. In addition, the setting changing unit 37 changes the address of an unused tool (a tool not used in this machining process) stored in the new address of the main magazine 5 to the address of the sub magazine 6. The address of the sub magazine 6 is, for example, the address of the sub magazine 6 in which the designated tool has been stored so far.
The change of the tool data of the designated tool by the setting changing unit 37 is performed for the called designated tool when the designated tool is called from the sub magazine 6 to the spindle side standby position P2 by the T command. Then, the address of the designated tool and the address of the unused tool are exchanged.
The tool data of the designated tool changed by the setting changing unit 37 is stored in the tool data storage unit 34. The tool data storage unit 34 stores the tool data of the designated tool output from the setting change unit 37 and outputs the tool data to the magazine control unit 33.

The magazine control unit 33 calls the tool 7 to the spindle-side standby position P2 by the T command, and transports the replaced tool 7 from the spindle-side standby position P2 to the tool storage unit 10 serving as the address of the tool 7. And store.
The magazine control unit 33 is called from the sub-magazine 6 in one machining process and changes the address command by changing the tool data of the designated tool related to the T command value used for machining the first workpiece. The rearrangement is performed so that the tool is stored in the tool storage unit 10 of the new address of the main magazine 5 specified by the value.
That is, the magazine control unit 33 rearranges the designated tool stored in the sub magazine 6 so as to be stored in the address of the unused tool in the main magazine 5 (tool storage unit 10). The unused tool is stored in the address (tool storage unit 10) of the sub magazine 6 in which the designated tool is stored. In this way, the designated tool of the sub magazine 6 and the unused tool of the main magazine 5 are switched.
After the first workpiece among the plurality of workpieces to be machined in one machining step is completed, the designated tool is exchanged between the main magazine 5 and the machine tool 1 by the ATC 4.

In the tool rearrangement method according to the first embodiment, a plurality of workpieces to be machined in one machining process are stored in the sub magazine 6 before starting the machining, but are arranged in the main magazine 5 during this machining process. The T command value of at least one tool 7 to be kept and the address command value of the main magazine 5 corresponding to this T command value are designated for each tool.
The designated tool 7 related to the T command value that is called from the sub-magazine 6 and used for machining the first workpiece in one machining process is designated by the address command value by changing the tool data. It is rearranged so as to be stored in the new address of the main magazine 5. After the first workpiece among the plurality of workpieces to be machined in one machining step is completed, the designated tool is exchanged between the main magazine 5 and the machine tool 1 by the ATC 4.

Next, the procedure of this method will be described.
As shown in FIGS. 1, 3 to 5, first, whether or not to change the tool arrangement is selected (step 101).
When the tool rearrangement is not performed, the workpiece is called up (step 102), and the workpiece is machined in one machining process in which the tool 7 of the sub magazine 6 and the tool 7 of the main magazine 5 are sequentially used (step 103). ).
The tools 7 used in the processing are returned to the original addresses (tool storage unit 10) of the sub magazine 6 and the main magazine 5 (step 104). It is determined whether or not machining of the workpiece has been completed (step 105), and if not completed, steps 103 to 105 are repeated.
When the machining of the workpiece is completed (step 105), it is determined whether or not the next workpiece is to be machined (step 106). If the next workpiece is machined, the process returns to step 102. If the next workpiece is not processed in step 106, the procedure is terminated.

When the tool rearrangement according to the present invention is performed (step 101), a plurality of workpieces to be machined in one machining process are stored in the sub magazine 6 before the machining is started. During this machining process, the main magazine 5 is stored. The T command value of the tool that is desired to be placed in the position and the address command value of the main magazine 5 corresponding to the T command value are designated for each tool.
The designated T command value and address command value are stored in the command value storage unit 36 (step 107).

The T command value is specified by the following method.
(A) The operator directly inputs the T command value from the keyboard.
(B) A plurality of T command values commanded in the machining program are displayed in a list on the screen, and an operator selects and designates them.
The address number (pot number) of the main magazine 5 is specified by the following method.
(C) The operator inputs the address number directly from the keyboard.

FIG. 12A shows the display state of the layout screen 40. For example, a T command for three tools among the tools scheduled to be used in this machining step, and an address number of the main magazine 5 that can store each tool related to the T command (that is, mounted in the tool storage unit 10). This is a display state when “pot number” is designated.
Since the tool number and comment (for example, tool type) of each tool are also displayed on the layout screen 40, the T command value and the address command value can be easily and definitely specified.

Next, the first workpiece among the plurality of workpieces to be machined in one machining process is called (step 108).
One designated tool is called from the sub magazine 6 to the spindle standby position P2 (step 109). That is, in response to a T command (for example, “T11000”), one designated tool (for example, tool number T11000) is called and conveyed to the spindle-side standby position P2.
Then, according to the command “M06”, the tool is exchanged between the spindle-side standby position P2 and the spindle 2, and as a result, the designated tool (T11000) is mounted on the spindle 2. Further, the unused tool moves from the spindle 2 to the spindle-side standby position P2 (step 110).
Then, in response to a T command (for example, “T12000”), the next designated tool (for example, tool number T12000) is called to the spindle-side standby position P2 (step 111). In parallel with this, the first workpiece is machined by the designated tool (T11000) mounted on the spindle 2 (step 112).

FIG. 5 is a flowchart showing an execution procedure of the tool calling process by the T command, and shows a case where the tool life management is not performed.
As shown in FIG. 5, when the designated tool is called by the T command (steps 109 and 111), it is determined whether or not there is a tool at the spindle side standby position P2 (step 130). If there is a tool at the spindle side standby position P2, this tool is stored in the magazine (step 131), and the designated tool moves to the spindle side standby position P2 (step 132). Even if there is no tool at the spindle-side standby position P2 in step 130, the designated tool moves to the spindle-side standby position P2 (step 132).

Next, when it is determined that the address of the designated tool is in the sub magazine 6 (step 133), it is determined whether or not the commanded T command value is stored in the command value storage unit 36 (step 133). Step 134).
If there is a T command value in the command value storage unit 36, it is determined whether or not a tool is stored at the new address of the main magazine 5 (step 135). If there is a tool at the new address of the main magazine 5, the tool stored at the new address is moved to the address where the specified tool is stored, and the address of the moved tool is changed to the address of the specified tool. (Step 136). Next, the address of the designated tool is changed to a new address, and this process is terminated (step 137).
In addition, when the address of the designated tool is not in the sub magazine 6 (step 133), or when there is no commanded T command value in the command value storage unit 36 (step 134), this process is ended.
If no tool is stored in the new address of the main magazine 5 in step 135, the process proceeds to step 137 to change the address of the designated tool to the new address of the main magazine 5.

Thus, the setting changing unit 37 stores the designated tool designated by the T command value stored in the command value storage unit 36 at the new address of the main magazine 5 designated by the address command value. Change tool data.
For example, the address of the designated tool (tool number: T11000) of the T command (“T11000”) is exchanged with the address of another tool. Further, the address of the designated tool (tool number: T12000) of the T command (“T12000”) and the address of another tool are also exchanged.
The addresses of these designated tools (T11000, T12000) are changed from the old address in the sub magazine 6 to the new address in the main magazine 5. As a result, the designated tools (T11000, T12000) can be stored at the new address of the main magazine. In this way, the address is switched between the designated tool of the sub magazine 6 and the tool of the main magazine 5.

As shown in FIG. 4, it is determined whether or not the first workpiece among the plurality of workpieces to be machined in one machining step has been completed (step 113). If not completed, the process returns to step 110, and the next designated tool (or the tool originally stored in the main magazine 5) is called to process the workpiece.
In this way, by repeating the procedure of steps 110 to 113, the machining of the first workpiece among the plurality of workpieces to be machined in one machining process is completed. At this point, all the tools used in this processing step are stored in the main magazine 5.
That is, the designated tool stored in the sub magazine 6 is rearranged in the main magazine 5. On the other hand, the tool originally in the main magazine 5 remains in the main magazine 5 as it is.

When the processing of the first workpiece is completed (step 113), the next workpiece is called (step 114) and then processed in the same processing step. That is, one designated tool that has been rearranged is called from the new address of the main magazine 5 to the spindle (step 115), and the workpiece is machined (step 116).
Since the other designated tools are also rearranged in the main magazine 5, this designated tool is called from the other new address of the main magazine 5 to the spindle (step 117), and the workpiece is machined (step 118).
Next, it is determined whether or not the next workpiece is processed (step 119). If there is, the process returns to step 114, and if not, the procedure ends.

For example, as shown in FIG. 13, in the machining program, the designated tool T11000 is called and conveyed to the spindle-side standby position P2 with a T command “T11000”. With the command “M06”, the tool is exchanged between the spindle-side standby position P2 and the spindle 2, and the designated tool T11000 is mounted on the spindle 2. With the T command “T12000”, the next designated tool T12000 to be used is called to the spindle side standby position P2.
In “machining 1”, the workpiece is machined with the designated tool T11000. In this case, “machining 1” is not started after the designated tool T12000 is called to the spindle-side standby position P2, but the calling of the designated tool T12000 and “machining 1” are executed simultaneously in parallel.
When “machining 1” is completed, the command “M06” is used to change the tool between the standby position P2 on the spindle side and the spindle 2, and the designated tool T12000 is mounted on the spindle 2.
With the T command “T13000”, the designated tool T11000 is stored in the magazine device 3, and the designated tool T13000 to be used next is called to the spindle side standby position P2.
In “machining 2”, the same workpiece is machined with the designated tool T12000. In this case, “machining 2” is not started after the designated tool T13000 is called to the spindle-side standby position P2, but the calling of the designated tool T13000 and “machining 2” are simultaneously executed in parallel.
When “machining 2” is completed, the command “M06” is used to change the tool between the spindle-side standby position P2 and the spindle 2, and the designated tool T13000 is mounted on the spindle 2. Thereafter, the procedure is executed in the same manner.

In this way, the specified tool (tool number: T11000) is called from the sub magazine 6 and used by the T command “T11000” while the first workpiece is being machined by this machining program. The tool is stored in the tool storage unit 10 of the new address (pot number 10) of the main magazine 5.
Similarly, after the designated tool (tool number: T12000) is called from the sub magazine 6 and used by the T command “T12000”, the tool storage unit 10 of the new address (pot number 30) of the main magazine 5 is used. It is stored in.
Further, the designated tool (tool number: T13000) is called from the sub magazine 6 and used by the T command “T13000”, and then stored in the tool storage unit 10 of the new address (pot number 40) of the main magazine 5. The
In this manner, each designated tool is rearranged in parallel with the machining of the first workpiece among the plurality of workpieces to be machined in one machining step. In the state in which the machining of the first workpiece is completed, all tools used in this one machining process are arranged in the main magazine 5. Therefore, in the machining of the second and subsequent workpieces, the designated tool is exchanged between the main magazine 5 and the main shaft 2.

In the first embodiment, the rearrangement of tools used in one machining step can be performed with a simple designation operation. In addition, while the machine tool 1 is machining a workpiece, the tools used in this machining process are rearranged. Accordingly, since the machine tool 1 does not bother to stop the machining operation for the rearrangement of the tools, the productivity of the machine tool 1 is improved.
In addition, a tool change at the time of machining the first workpiece among a plurality of workpieces machined in one machining step is distinguished from a tool change at the time of machining the second and subsequent workpieces. . That is, when the first workpiece is machined, the tools are rearranged in parallel with the machining operation, so that it may take time to change the tool. However, when the machining of the first workpiece among the plurality of workpieces to be machined in one machining process is completed, all the tools necessary for this machining process are rearranged in the main magazine 5. Accordingly, since the tool of the main magazine 5 is used in the machining of the second and subsequent workpieces, the tool can be changed in a short time.

In the first embodiment, during the procedure of the method of the present invention shown in FIGS. 4 and 5, another type of machining operation is temporarily inserted and executed, and this machining operation is completed. It is then possible to return to the original procedure of the method of the present invention.
For example, when a series of steps from step 107 to step 119 and a series of steps from step 130 to step 137 are executed, and each workpiece is sequentially machined in one machining step, this machining is performed. This is a case where one or more workpieces of another type are machined in the same or different machining process as the one machining process during the operation.

(Second Embodiment)
Next, a tool rearrangement method and apparatus according to the second embodiment will be described with reference to FIGS. 1, 6 to 8, and 12A.
In the second embodiment and the third embodiment, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, the description thereof is omitted, and only different parts are described.

As shown in FIGS. 1 and 6, the tool rearrangement device 20 a performs rearrangement of tools in the magazine device 3. The tool rearrangement device 20a includes a magazine control unit 33, a tool data storage unit 34, a command value storage unit 36a, a new address selection unit 38, and a setting change unit 37.
The new address selection unit 38 reads the tool data stored in the tool data storage unit 34. The new address selection unit 38 reads out this tool data and data indicating the state of each tool storage unit 10 of the main magazine 5 controlled by the magazine control unit 33, and automatically selects a new address of the main magazine 5. Then, the result is output to the command value storage unit 36a.
A plurality of workpieces to be machined in one machining process are stored in the sub-magazine 6 before starting machining. During this machining process, the T command value of at least one tool to be placed in the main magazine 5 is stored. Is specified for each tool. The new address selection unit 38 can automatically select a new address of the main magazine 5 corresponding to the T command value.

The command value storage unit 36 a stores the T command value and the new address of the main magazine 5 selected by the new address selection unit 38 and outputs it to the magazine control unit 33 and the setting change unit 37. Therefore, the new address selection unit 38 sets a new address in the command value storage unit 36a.
A signal is output from the magazine control unit 33 to the setting change unit 37. Then, the setting changing unit 37 designates the designated tool designated by the T command value stored in the command value storage unit 36a so as to be stored in the new address of the main magazine 5 stored in the command value storage unit 36a. Change the tool data of the tool.
The magazine control unit 33 changes the designated tool for the T command value that is called from the sub-magazine 6 and used for machining the workpiece in one machining process, so that the new magazine of the main magazine 5 is changed. Rearrange to store in address.
Thereafter, the designated tool is exchanged between the main magazine 5 and the machine tool 1 by the ATC 4.
The tool data of the designated tool changed by the setting changing unit 37 is stored in the tool data storage unit 34. The tool data storage unit 34 stores the tool data of the designated tool output from the setting change unit 37 and outputs the tool data to the magazine control unit 33.

In the tool rearrangement method according to the second embodiment, a plurality of workpieces to be machined in one machining process are stored in the sub magazine 6 before starting the machining, but are arranged in the main magazine 5 during the machining process. A T command value for at least one tool to be specified is designated for each tool, and a new address of the main magazine 5 corresponding to the T command value is automatically selected.
The designated tool related to the T command value that is called from the sub-magazine 6 and used for machining the workpiece in one machining process is stored in the new address of the main magazine 5 by changing the tool data. Rearranged. Thereafter, the designated tool is exchanged between the main magazine 5 and the machine tool 1 by the ATC 4.

Next, the procedure of this method will be described. Steps 101 to 106 are the same as the procedure shown in FIG.
As shown in FIG. 1 and FIG. 6 to FIG. Although stored, a T command value of a tool to be placed in the main magazine 5 is designated for each tool during this machining step (step 107a).
The T command value is designated by automatically registering the T command value of the tool in order by a program command.

The new address selection unit 38 calls the tool data stored in the tool data storage unit 34. The new address selection unit 38 is stored in the sub magazine 6 before the start of machining of a plurality of workpieces to be machined in the machining process, but should be placed in the main magazine 5 during the machining process. The T command value of at least one tool is designated for each tool. This T command value is specified by being commanded by the machining program.
Then, the new address selection unit 38 automatically selects a new address of the main magazine 5 corresponding to the T command value. The designated T command value and the new address of the main magazine 5 are stored in the command value storage unit 36a (step 107a1).

Next, the first workpiece among the plurality of workpieces to be machined in one machining step is called (step 108), and one designated tool is called from the sub magazine 6 to the spindle side standby position P2 (step 109). . That is, in response to a T command (for example, “T11000”), one designated tool (for example, tool number: T11000) is called and conveyed to the spindle standby position P2.
Then, according to the command “M06”, the tool is exchanged between the spindle-side standby position P2 and the spindle 2, and the designated tool (T11000) is mounted on the spindle 2. The unused tool moves from the spindle 2 to the spindle-side standby position P2 (step 110).
Next, the unused tool at the spindle standby position P2 is stored in the magazine. Then, in response to a T command (eg, “T12000”), the next designated tool (eg, tool number: T12000) is called to the spindle-side standby position P2 (step 111). In parallel with this, the first workpiece is machined by the designated tool (T11000) mounted on the spindle 2 (step 112).

FIG. 8 is a flowchart showing the execution procedure of the tool calling process based on the T command, and shows a case where the tool life management is not performed.
As shown in FIG. 8, when the designated tool is called by the T command (steps 109 and 111), it is determined whether or not there is a tool at the spindle side standby position P2 (step 130). If there is a tool at the spindle side standby position P2, this tool is stored in the magazine (step 131), and the designated tool moves to the spindle side standby position P2 (step 132). Even if there is no tool at the spindle-side standby position P2 in step 130, the designated tool moves to the spindle-side standby position P2 (step 132).

Next, when it is determined that the address of the designated tool is in the sub magazine 6 (step 133), it is determined whether or not the commanded T command value is stored in the command value storage unit 36a (step 133). Step 134).
If there is a T command value in the command value storage unit 36a, it is determined whether or not a tool is stored at the new address of the main magazine 5 (step 135). If there is a tool at the new address of the main magazine 5, the tool stored at the new address is moved to the address where the specified tool is stored, and the address of the moved tool is changed to the address of the specified tool. (Step 136). Next, the address of the designated tool is changed to a new address, and this process is terminated (step 137).
In addition, when the address of the designated tool is not in the sub magazine 6 (step 133), and when there is no commanded T command value in the command value storage unit 36a (step 134), this process is terminated.
If no tool is stored in the new address of the main magazine 5 in step 135, the process proceeds to step 137 to change the address of the designated tool to the new address of the main magazine 5.

Thus, the setting changing unit 37 stores the designated tool designated by the T command value stored in the command value storage unit 36a at the new address of the main magazine 5 designated by the address command value. Change tool data.
For example, the address of the designated tool (tool number: T11000) of the T command (“T11000”) is exchanged with the address of another tool. Further, the address of the designated tool (tool number: T12000) of the T command (“T12000”) and the address of another tool are also exchanged.
The addresses of these designated tools (T11000, T12000) are changed from the old address in the sub magazine 6 to the new address in the main magazine 5. As a result, the designated tools (T11000, T12000) can be stored at the new address of the main magazine. Thus, the address is automatically switched between the designated tool of the sub magazine 6 and the tool of the main magazine 5.

As shown in FIG. 7, it is determined whether or not the processing of the first workpiece among the plurality of workpieces respectively processed in one processing step is completed (step 113). If not completed, the process returns to step 110, and the next designated tool (or the tool originally stored in the main magazine 5) is called to process the workpiece.
In this way, by repeating the procedure of steps 110 to 113, the machining of the first workpiece among the plurality of workpieces to be machined in one machining process is completed. At this point, all the tools used in this processing step are stored in the main magazine 5.
That is, the designated tool stored in the sub magazine 6 is rearranged in the main magazine 5. On the other hand, the tool originally in the main magazine 5 remains in the main magazine 5 as it is.
Thereafter, the procedure from Step 114 for calling the next workpiece to Step 119 for determining whether or not the next workpiece is processed is the same as that in the first embodiment.

In the second embodiment, the tool storage unit 10 that satisfies the following condition (1) or (2) is excluded from the targets for selecting a new address in the main magazine 5.
(1) A tool storage unit 10 (pot) for tools already registered in the main magazine 5 for use in one machining step.
(2) Tool storage unit 10 (pot) in which a fixed tool is stored.
Here, the “fixed tool” is a tool that is not desired to be moved from the main magazine 5 to the sub magazine 6. For example, a list of tools stored in the main magazine 5 is displayed on the screen, and the “fixed” column for the corresponding tool in this tool list is set to “ON”. With this setting, the command is output to the new address selection unit 38, and this tool is handled as the fixed tool described above. As a result, the fixed tool remains in the main magazine 5.

In the second embodiment, the new address selection unit 38 sets a priority order based on a predetermined standard for the plurality of tool storage units 10 of the main magazine 5, and the plurality of tool storage units 10 of the main magazine 5 according to this priority order. It is preferable to automatically select a new address from among them.
The priority criteria include, for example, the following criteria (1) to (7) when arranged in order of priority. In addition, the reference | standard and content of this priority can be changed freely.
In order to be selected as a new address, when the designated tool related to the T command value is rearranged and stored in the new address of the main magazine 5, there is no possibility that interference with adjacent tools occurs in the main magazine 5. It is an indispensable condition.

(1) A tool storage unit 10 (pot) in which a tool group number and a tool size are equal and a life tool (a tool that has reached the end of life) or a skip tool (a tool that is not used in one processing step) is stored.
(2) Tool storage unit 10 (pot) in which the tool sizes are equal and the life tool or skip tool is stored.
(3) Tool storage unit 10 (pot) in which the life tool or skip tool is stored.
However, when the specified tool called by the T command is stored, there is no other tool within the interference range, and the tool stored in the tool storage unit 10 of the main magazine 5 is stored in the tool of the specified tool called by the T command. When stored in the section 10 (the tool storage section of the sub magazine 6), there should be no other tool within the interference range in the sub magazine 6.
(4) Tool storage unit 10 (empty pot) in which no tool is mounted.
However, if the designated tool called by the T command is a large-diameter tool, there must be no other tool within the interference range. For example, in the main magazine 5, both sides are empty pots.
(5) Tool storage unit 10 (pot) in which tools of the same group number are stored.
(6) Tool storage unit 10 (pot) in which tools of the same tool size are registered.
(7) When the designated tool called by the T command is stored in the main magazine 5, the tool storage unit 10 (pot) in which no other tool is in the interference range in the main magazine 5. For example, both sides of the designated tool after being rearranged in the main magazine 5 are empty pots.
However, when the unused tool stored in the tool storage unit 10 of the main magazine 5 is stored in the tool storage unit 10 of the designated tool called by the T command (the tool storage unit of the sub magazine 6), There is no other tool within the interference range of the unused tool. For example, in the sub magazine 6, both sides are empty pots.

  According to the second embodiment, even if the operator does not designate a new address of the main magazine 5 corresponding to the T command value of the tool for each tool, if the T command value is designated, the tool can be easily rearranged. It can be carried out.

In the second embodiment, during the procedure of the method of the present invention shown in FIGS. 7 and 8, another type of machining operation is temporarily inserted and executed, and this machining operation is completed. It is then possible to return to the original procedure of the method of the present invention.
For example, when a series of procedures from Step 107a to Step 119 and a series of procedures from Step 130 to Step 137 are executed, and each workpiece is sequentially machined in one machining process, this machining is performed. This is a case where one or more workpieces of another type are machined in the same or different machining process as the one machining process during the operation.

(Third embodiment)
Next, a tool rearrangement method and apparatus according to a third embodiment will be described with reference to FIGS. 1, 9 to 11, and 12B to 12D.
As shown in FIGS. 1 and 9, the tool rearrangement device 20 b performs tool rearrangement in the magazine device 3. The tool rearrangement device 20b includes a magazine control unit 33, a tool data storage unit 34, a tool group management unit 39, a command value storage unit 36, and a setting change unit 37.

The tool group management unit 39 manages a plurality of tools that perform the same machining as a tool group. Information on the tool group managed by the tool group management unit 39 is output to the magazine control unit 33.
For example, as shown in FIGS. 12B and 12C, when the T command is “T1000”, the tool group G1 for performing the same machining includes four tools. The tool number of each tool is 11000, 21000, 31000, 41000 so that the lower four digits are the common number “1000”. The four-digit number “1000” indicates the group number of the tool group G1.
These four tools are included in the tool group G1 of the T command “T1000”, stored in the tool data storage unit 34, and managed by the tool group management unit 39.
Similarly, as shown in FIGS. 12B and 12D, for example, when the T command is “T2000”, the tool group G2 for performing the same machining includes five tools. The tool number of each tool is 32000, 42000, 52000, 62000, 72000 so that the lower four digits are the common number “2000”. The four-digit number “2000” indicates the group number of the tool group G2.
These five tools are included in the tool group G2 of the T command “T2000”, stored in the tool data storage unit 34, and managed by the tool group management unit 39.

A plurality of workpieces to be machined in one machining process are stored in the sub-magazine 6 before starting machining. At least one tool including a tool to be placed in the main magazine 5 is included during this machining process. The T command value of the group and the address command value of the main magazine 5 corresponding to this T command value are designated for each tool group.
The command value storage unit 36 stores the T command value and the address command value, and outputs them to the setting change unit 37 and the magazine control unit 33.

A signal is output from the magazine control unit 33 to the setting change unit 37. The setting changing unit 37 stores the tool in the designated tool group related to the T command value stored in the command value storage unit 36 at a new address designated by the address command value of the main magazine 5. Change tool data.
That is, the setting change unit 37 changes the current address (address of the sub magazine 6) of the tool in the designated tool group to the new address of the main magazine 5. The setting changing unit 37 changes the address of the unused tool stored in the new address of the main magazine 5 to the address of the sub magazine 6. The address of the sub magazine 6 is, for example, the address of the sub magazine 6 in which the tools in the designated tool group have been stored so far.
The change of the tool data of the tool in the designated tool group by the setting changing unit 37 is performed for the called tool when the tool is called from the sub magazine 6 to the spindle side standby position P2 by the T command. Then, the address of the tool in the designated tool group and the address of the unused tool are exchanged.
The tool data changed by the setting change unit 37 is stored in the tool data storage unit 34. The tool data storage unit 34 stores the tool data output from the setting change unit 37 and outputs the tool data to the tool group management unit 39.

The magazine control unit 33 is called from the sub magazine 6 in one machining process, and the tool data of the tool in the designated tool group related to the T command value used for machining the first workpiece is changed. Thus, the rearrangement is performed so that the new magazine is stored in the new address of the main magazine 5 designated by the address command value.
Thereafter, the tools in the designated tool group are exchanged between the main magazine 5 and the machine tool 1 by the ATC 4.

When the machining operation proceeds and the tool in the designated tool group reaches the end of its life, the setting changing unit 37 sets the first spare tool (for example, in the designated tool group G1 including this life tool (for example, tool number: T11000)). , Tool number: T21000) is stored in the new address of the main magazine 5 to change the tool data of the spare tool.
That is, the setting change unit 37 stores the current address (address of the sub magazine 6) of the spare tool (tool number: T21000) and the new address of the main magazine 5 (for example, the life tool (tool number: T11000)). To the address of the main magazine 5).
The setting changing unit 37 changes the address of the life tool (tool number: T11000) stored in the new address of the main magazine 5 to the address of the sub magazine 6. The address of the sub magazine 6 is, for example, the address of the sub magazine 6 in which the spare tool (tool number: T21000) has been stored.
When the spare tool is called from the sub magazine 6 to the spindle standby position P2 by the T command, the setting changing unit 37 changes the tool data for the called spare tool. Then, the spare tool address and the life tool address are exchanged.

The magazine control unit 33 changes the tool data of the spare tool (tool number: T21000) stored in the sub magazine 6 to change the main magazine 5 in which the life tool (tool number: T11000) is stored. To be stored in the new address (tool storage unit 10).
Further, after the spare tool (tool number: T21000) is called to the spindle-side standby position P2, the magazine control unit 33 uses the life tool (tool number: T11000) as the spare tool (tool number: T21000) in the sub magazine 6. To the address.
Thus, the spare tool of the sub magazine 6 and the life tool of the main magazine 5 are switched. Thereafter, the spare tool (tool number: T21000) is exchanged between the main magazine 5 and the machine tool 1 by the ATC 4.

In the tool rearrangement method using the tool rearrangement apparatus 20b, a plurality of workpieces to be machined in one machining process are stored in the sub magazine 6 before starting the machining, and during this machining process, the main magazine 5 is stored. The T command value of at least one tool group that includes the tool to be placed and performs the same machining and the address command value of the main magazine 5 corresponding to this T command value are designated for each tool group.
The tools in the designated tool group that are called from the sub magazine 6 and used for machining the workpiece in one machining process are designated by the address command value by changing the tool data. It is rearranged so that it is stored in the new address of the main magazine 5. Thereafter, the tools in the designated tool group are exchanged between the main magazine 5 and the machine tool 1 by the ATC 4.
When the machining operation progresses and the tool in the tool group reaches the end of its life, the spare tool in the specified tool group that contains this end-of-life tool is changed to its main data. It is rearranged so as to be stored in the new address of the magazine 5.
Thereafter, the spare tool is exchanged between the main magazine 5 and the machine tool 1 by the ATC 4.

Next, the procedure of this method will be described. Steps 101 to 106 are the same as the procedure shown in FIG.
As shown in FIGS. 1, 9 to 11, when the tool arrangement of the present invention is performed in step 101, the sub magazine 6 is loaded before the start of machining of a plurality of workpieces machined in one machining process. Although stored, during this machining process, the T command value of the tool group that contains the tool to be placed in the main magazine 5 and performs the same machining, and the address command value of the main magazine 5 corresponding to this T command value Are specified for each tool group.
The designated T command value and address command value are stored in the command value storage unit 36 (step 107b).

The T command value for this tool group is specified by the following method.
(A) The operator directly inputs the T command value from the keyboard.
(B) A plurality of T command values commanded in the machining program are displayed in a list on the screen, and an operator selects and designates them.
(C) The T command value of the tool group is registered in order according to the program command.
The address command value of the main magazine 5 is specified by the following method.
(D) The operator inputs the address number directly from the keyboard.
(E) An address number (pot number) that can be rearranged is automatically set by a screen operation or a program command.

Next, the first workpiece among the plurality of workpieces to be machined in one machining step is called (step 108), and one designated tool is called from the sub magazine 6 to the spindle side standby position P2 (step 109). .
That is, one designated tool is called by the T command and conveyed to the spindle standby position P2. One designated tool called by the T command is one of the tools in the same tool group related to the T command managed by the tool group management unit 39.
For example, one tool (for example, tool T11000) in the tool group G1 (group number “T1000”) related to the T command is called as one designated tool. Hereinafter, the tools in the tool group according to the T command are sequentially called as designated tools by the T command.

Then, according to the command “M06”, the tool is exchanged between the spindle-side standby position P2 and the spindle 2, and as a result, the designated tool (T11000) is mounted on the spindle 2. Further, the unused tool moves from the spindle 2 to the spindle-side standby position P2 (step 110).
Next, the unused tool at the spindle standby position P2 is stored in the magazine. Then, with the T command (for example, the group number “T2000” of the tool group G2), the next designated tool (for example, T32000) is called to the spindle-side standby position P2 (step 111). In parallel with this, the first workpiece is machined by the designated tool (T11000) mounted on the spindle 2 (step 112).

FIG. 11 is a flowchart showing the execution procedure of the tool calling process based on the T command, and shows a case of managing the tool life.
In the third embodiment, since the tool life is managed, as shown in FIG. 11, when the designated tool is called by the T command (steps 109 and 111), the tool life is reached from the tool group of the T command value. Search for and specify a missing tool (step 129).
Next, it is determined whether or not there is a tool at the spindle-side standby position P2 (step 130). If there is a tool at the spindle side standby position P2, this tool is stored in the magazine (step 131), and the designated tool moves to the spindle side standby position P2 (step 132). Even if there is no tool at the spindle-side standby position P2 in step 130, the designated tool moves to the spindle-side standby position P2 (step 132).

Next, when it is determined that the address of the designated tool is in the sub magazine 6 (step 133), it is determined whether or not the commanded T command value is stored in the command value storage unit 36 (step 133). Step 134).
If there is a T command value in the command value storage unit 36, it is determined whether or not a tool is stored at the new address of the main magazine 5 (step 135). If there is a tool at the new address of the main magazine 5, the tool stored at the new address is moved to the address where the specified tool is stored, and the address of the moved tool is changed to the address of the specified tool. (Step 136). Next, the address of the designated tool is changed to a new address, and this process is terminated (step 137).
Note that this processing is ended when the address of the designated tool is not in the sub magazine 6 (step 133), and when there is no commanded T command value in the command value storage unit 36 (step 134).
If the tool is not stored at the new address of the main magazine 5 at step 135, the process proceeds to step 137 to change the address of the designated tool to the new address of the main magazine 5.

Thus, the setting changing unit 37 stores the designated tool designated by the T command value stored in the command value storage unit 36 at the new address of the main magazine 5 designated by the address command value. Change tool data.
For example, the address of the designated tool (tool number: T11000) of the T command (“T1000”) is exchanged with the address of another tool. Further, the address of the designated tool (tool number: T12000) of the T command (“T2000”) and the address of another tool are also exchanged.
The addresses of these designated tools (T11000, T12000) are changed from the old address in the sub magazine 6 to the new address in the main magazine 5. As a result, the designated tools (T11000, T12000) can be stored at the new address of the main magazine. In this way, the address is switched between the designated tool of the sub magazine 6 and the tool of the main magazine 5.

As shown in FIG. 10, it is determined whether or not the processing of the first workpiece among the plurality of workpieces to be processed in one processing step is completed (step 113). If the machining has not been completed, the process returns to step 110, and the workpiece is machined by calling the next designated tool or the tool originally stored in the main magazine 5.
In this way, by repeating the procedure of steps 110 to 113, the machining of the first workpiece among the plurality of workpieces each machined in one machining process is completed. At this point, all the tools used in this processing step are stored in the main magazine 5.
That is, the designated tool stored in the sub magazine 6 is rearranged in the main magazine 5. On the other hand, the tool originally in the main magazine 5 remains in the main magazine 5 as it is.

When it is determined in step 113 that the first workpiece has been processed, the next workpiece is called (step 114).
Next, it is determined whether or not the tool has reached the end of its life (step 122). If the tool life is not reached, the procedure from step 115 for calling one designated tool from the main magazine 5 to the spindle and machining the workpiece to step 119 for determining whether or not the next workpiece is machined is executed. To do.
If it is determined in step 119 that there is a next workpiece, the process returns to step 114, and if there is no machining, the procedure ends.

When the tool reaches the end of its life in step 122, the tool data of the spare tool in the designated tool group including the end-of-life tool is changed. As a result, the spare tool is rearranged so as to be stored at the new address of the main magazine 5 in which the life tool is stored.
Then, after the spare tool stored in the sub magazine 6 is called to the spindle side standby position P2, it is exchanged to process the workpiece. Thereafter, the spare tool is conveyed to the address of the life tool (tool storage unit 10) in the main magazine 5. On the other hand, the life tool is conveyed to the address of the spare tool in the sub magazine 6 (step 123).
The setting changing unit 37 changes the address of the spare tool (address of the sub magazine 6) in the tool group including the life tool to the new address of the main magazine 5 (step 124). The new address of the main magazine 5 is preferably an address where the life tool is stored in the main magazine 5.
In this way, the tool rearrangement is executed, and the spare tool of the sub magazine 6 and the life tool of the main magazine 5 are switched. Thereafter, the spare tool is exchanged between the main magazine 5 and the machine tool 1 by the ATC 4.
Thereafter, the process proceeds to step 115, where another designated tool (or other spare tool) is called from the main magazine 5 to machine the workpiece, and the procedure up to step 119 is executed.

In the procedure shown in FIG. 10, when the tool reaches the end of its life, the replacement of the life tool and the spare tool is performed separately from the tool call (steps 123 and 124). You may go on.
In this case, for example, after the spare tool is called from the sub magazine 6 to the main spindle in steps 115 and 117, the tool is rearranged. Then, the spare tool of the sub magazine 6 and the life tool of the main magazine 5 are switched.

According to the third embodiment, in order to rearrange the tools of the tool group performing the same machining, the T command value of the tool group and the main command can be changed without specifying the T command value of the tool for each tool. If the address command value of the magazine 5 is designated, the tool can be easily rearranged, and the life tool and the spare tool can be exchanged.
Therefore, as soon as the tool in the tool group reaches the end of its life due to the progress of the machining operation, the end-of-life tool is sequentially transferred to the sub magazine 6. The spare tools stored in the sub magazine 5 and included in the tool group can be supplied to the main magazine 5. During this time, the machine tool 1 can be continuously operated without interrupting the machining operation, and therefore can be operated unattended for a long time without being affected by the cycle time of each tool.
Thus, as soon as the tool reaches the end of its life, the life tool and the spare tool are automatically switched. Therefore, it is not necessary to arrange all the spare tools in the main magazine 5 in advance. That is, a necessary number of spare tools can be arranged in the sub magazine 6 located at a position away from the ATC 4.

In the third embodiment, other types of machining operations are temporarily inserted and executed during the procedure of the method of the present invention shown in FIGS. 10 and 11, and the machining operations are completed. It is then possible to return to the original procedure of the method of the present invention.
For example, when a series of steps from Step 107b to Step 119 and a series of steps from Step 129 to Step 137 are respectively executed and each workpiece is sequentially machined in one machining step, this machining is performed. This is a case where one or more workpieces of another type are machined in the same or different machining process as the one machining process during the operation.

As described above, in the present invention according to the first to third embodiments, since the tools used for processing can be collected in the main magazines 5 and 5a, the tools can be called in a short time.
Of the T command value of the tool (or tool group) stored in the sub magazines 6 and 6a and the new address command value of the main magazines 5 and 5a, both the T command value and the address command value (pot number) (First embodiment, third embodiment) or only the T command value (second embodiment) may be designated manually by an operator or by a program.
Therefore, a special device and a complicated machining program for changing the arrangement of the tools are unnecessary, and the arrangement of the tools can be easily performed. Further, if the operator manually designates the T command value of the tool (or tool group), the address command value of the main magazines 5 and 5a, etc., there is no need to change the conventional machining program. Since the operation when the operator manually designates is easy, a high skill level is not required.
If the T command value of the tool is registered in order in the machining program, and the address command value (pot number) that can be rearranged is automatically set by the program command, the operator's operation is unnecessary, and thus unattended operation becomes possible.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and additions are possible within the scope of the gist of the present invention.
In the drawings, the same reference numerals denote the same or corresponding parts.

  The tool rearrangement method and apparatus in the tool magazine apparatus according to the present invention can be applied to a double tool magazine apparatus or a matrix type tool magazine apparatus provided in a machine tool such as a machining center.

1 to 13 are views showing an embodiment of the present invention, and FIG. 1 is a schematic configuration diagram of a dual tool magazine apparatus. It is a schematic block diagram of a matrix type tool magazine apparatus. It is a block diagram of the tool arrangement change device concerning a 1st embodiment. It is a flowchart which shows the procedure of the tool rearrangement method concerning 1st Embodiment. It is a flowchart which shows the execution procedure of the tool call process concerning 1st Embodiment. It is a block diagram of the tool arrangement change device concerning a 2nd embodiment. It is a flowchart which shows the procedure of the tool arrangement | positioning change method concerning 2nd Embodiment. It is a flowchart which shows the execution procedure of the tool call process concerning 2nd Embodiment. It is a block diagram of the tool rearrangement apparatus concerning 3rd Embodiment. It is a flowchart which shows the procedure of the tool arrangement | positioning change method concerning 3rd Embodiment. It is a flowchart which shows the execution procedure of the tool call process concerning 3rd Embodiment. 12A and 12B are explanatory diagrams showing examples of the display state of the tool layout screen, and FIGS. 12C and 12D are explanatory diagrams showing examples of the tool group. It is explanatory drawing which shows a part of process program.

Explanation of symbols

1 Machine tool 3 Double tool magazine device (Tool magazine device)
3a Matrix-type tool magazine device (tool magazine device)
4, 4a Automatic tool changer 5, 5a Main magazine 6, 6a Sub magazine 7 Tool 10 Tool storage unit 20b Tool replacement unit 33 Tool magazine unit control unit 34 Tool data storage unit 35 NC unit 36 Command value storage unit 37 Setting change Part 39 Tool Group Management Department G1, G2 Tool Group

Claims (6)

One main magazine arranged at a position close to an automatic tool changer for exchanging tools with a machine tool;
A tool placement method in a tool magazine apparatus having one or a plurality of sub-magazines arranged at a position far from the automatic tool changer and capable of transporting the tool to the main magazine,
A plurality of workpieces to be machined in one machining process are stored in the sub-magazine before starting the machining, but the same machining is included in the one machining process because the tool to be placed in the main magazine is included. For each tool group, the T command value of at least one tool group for performing the command and the address command value of the main magazine corresponding to the T command value are specified.
The tool in the designated tool group related to the T command value that is called from the sub-magazine and used for machining the workpiece in the one machining step is changed in the address by changing the tool data. It is rearranged to be stored in the new address of the main magazine specified by the command value,
Thereafter, the tool is exchanged between the main magazine and the machine tool by the automatic tool changer,
When the tool in the designated tool group reaches the end of its life, the spare tool in the designated tool group containing the life tool is stored in the new address of the main magazine by changing the tool data. Have been rearranged to
Thereafter, the spare tool is exchanged between the main magazine and the machine tool by the automatic tool exchange device.   The tool magazine apparatus includes the one main magazine in which a plurality of tool storage units connected in an endless ring shape rotates, and the one or a plurality of subs in which a plurality of tool storage units connected in an endless ring shape rotate. The tool rearrangement method in the tool magazine device according to claim 1, wherein the tool magazine device is a multiple tool magazine device having a magazine.   The tool magazine apparatus has a matrix shape having the one main magazine in which a plurality of tool storage portions are arranged in a matrix and the one or a plurality of sub magazines in which a plurality of tool storage portions are arranged in a matrix. 2. The tool rearrangement method in the tool magazine apparatus according to claim 1, wherein the tool magazine apparatus is a tool magazine apparatus. One main magazine arranged at a position close to an automatic tool changer for exchanging tools with a machine tool;
A tool rearrangement device in a tool magazine device having one or a plurality of sub-magazines arranged at a position far from the automatic tool changer and capable of transporting the tool to the main magazine,
A tool magazine device controller for receiving a T command from the NC device and controlling the tool magazine device;
A tool data storage unit for storing data relating to the tool;
A tool group management unit for managing a plurality of tools performing the same machining as a tool group;
A plurality of workpieces to be machined in one machining process are stored in the sub-magazine before starting machining, but at least one tool to be placed in the main magazine is included during the one machining process. When a T command value of one tool group and an address command value of the main magazine corresponding to the T command value are designated for each tool group, a command value storage unit that stores these T command value and address command value When,
Tool data of the tool so that the tool in the designated tool group related to the T command value stored in the command value storage unit is stored at a new address designated by the address command value of the main magazine. And a setting change unit for changing
The tool magazine device controller is
By changing the tool data of the tool in the designated tool group which is called from the sub-magazine in the one machining step and used for machining the workpiece, the tool data in the designated tool group is changed. Rearranged to store in the new address of the main magazine specified by the command value,
Thereafter, the tool is exchanged between the main magazine and the machine tool by the automatic tool changer,
When the tool in the designated tool group reaches the end of its life, the setting change unit stores the spare tool in the designated tool group including the life tool at the new address of the main magazine. Change the tool data of this spare tool,
The tool magazine device controller is
The spare tool stored in the sub magazine is rearranged to be stored at the new address of the main magazine by changing the tool data,
Thereafter, the spare tool is exchanged between the main magazine and the machine tool by the automatic tool exchange device.   The tool magazine apparatus includes the one main magazine in which a plurality of tool storage units connected in an endless ring shape rotates, and the one or a plurality of subs in which a plurality of tool storage units connected in an endless ring shape rotate. 5. The tool rearrangement device in the tool magazine device according to claim 4, wherein the tool rearrangement device is a multiple tool magazine device having a magazine.   The tool magazine apparatus has a matrix shape having the one main magazine in which a plurality of tool storage portions are arranged in a matrix and the one or a plurality of sub magazines in which a plurality of tool storage portions are arranged in a matrix. The tool rearrangement device in the tool magazine device according to claim 4, which is a tool magazine device.

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