JP2847312B2 - NC machine tools - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a CN machine tool including a magazine having a plurality of tools and an NC machine tool main body.

2. Description of the Related Art Conventionally, in a magazine having a plurality of tools of an NC machine tool, tools having the same function are managed as one group. Specifically, since the life (use time) is managed for each group, if there is a tool with a life within the group that hinders the use, the use time on the data is set to 0 by exchanging the tool. A tool change is performed for each group to which a tool with a mark belongs, so that there is no difference in the use time between data and actual use. When an unused tool is in a group, it is up to the operator to replace the tool or to replace it with a new group of tools without replacement.

[Problems to be Solved by the Invention] However, when all the tools belonging to the group have reached the end of their life, it is not known whether the timing of tool replacement comes at night or day, and it is not known whether there is any worker. Tools had to be changed. Also, when the working time is not the same as the life time of the entire group, it is necessary to replace the tool in advance. In those cases, there has been a problem that the tool is uneconomical because the used tool whose life is still left must be replaced.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide an NC machine tool that efficiently manages the life of a tool.

[Means for Solving the Problems] The present invention relates to a magazine having a plurality of tools and an NC machine tool having an NC machine tool body for performing an NC machine. Storage means for storing a life management file having
Replacement detection means for detecting tool replacement on the tool magazine; and, based on a signal from the replacement detection means, the use history of the replaced tool in the life management file stored in the storage means in an unused state, and It is provided with rewriting means for giving priority to the use order of the tools and for sequentially rewriting the history as the use progresses.

[Operation] In the present invention, the storage means stores a life management file having a use history and a use order for a plurality of tools having the same function, and the replacement detection means detects tool replacement on the tool magazine. Then, the rewriting means sets the use history of the replaced tool in the life management file stored in the storage means based on the signal from the replacement detection means to the unused state, and gives priority to the use order of the used tools. ,
Since the history is sequentially rewritten as the use progresses, the tool can be changed efficiently without waste.

Embodiment An embodiment of an NC machine tool according to the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of an embodiment of an NC machine tool according to the present invention.

1, the NC machine tool 1 includes a magazine 2, an operation panel 3, and a table 4, and is provided with a storage unit 5, an exchange detection unit 6, and a rewrite unit 7.

The storage means 5 is specifically a RAM, and stores a life management file having a use history such as a use time and a use order of a plurality of tools having the same function, for example, a drill having the same diameter. . This life management file is
A tool number indicating a tool type for each group as shown in the figure,
The order of use and usage history are described. For example, T11110001
The tool is in use order 1, but the use history has already reached its end of life. Also, of the eight digits below T of this tool number, the first 1
The girder is the tool holding department. For example, it indicates production technology, manufacturing, construction work, and the like. The next digit indicates the tool maker, and the next two digits indicate a specific tool number. The last four digits represent the group number. Further, in the life management file, when the life of the tool has come, for example, the rewriting means 7 described later sets a flag in the column of the tool and rewrites the column of the use history.

The change detection means 6 detects a tool change on the magazine 2. Specifically, the sensor detects the change of the tool. Alternatively, the operator may change the tool and press a button on the operation panel 3. Then, the detected signal is sent to the rewriting means 7.

The rewriting means 7 is specifically a microcomputer, and based on the detection signal from the replacement detecting means 6, sets the use history of the replaced tool in the life management file stored in the storage means 5 to an unused state, and The use order of the middle tool is given the highest priority, and the history is sequentially rewritten as the use progresses. In the life management file stored in the storage means 5, the column of the use order of the replaced tool is set as the last use order, and the use order of the tool being used is set to 1. Also, the usage history of the replaced tool is rewritten as unused.

The display screen 8 of the operation panel 3 displays the life management file stored in the storage means 5 and informs the operator of the life state of the tool.

Next, the operation of one embodiment of the NC machine tool according to the present invention will be described.

First, the life management file of the storage means 5 manages the life of the tool for each tool group for each tool group having the same function, and when the life has expired, the rewriting means 7 sets the flag as described above. Rewrite the usage history column. Then, the life management file is displayed on the display screen 8 of the operation panel 3. The operator looks at the display screen 8 and, if there is a tool whose life has expired, considers the work situation, for example, the usage time when performing continuous machining, and considers the group to which the tool attached to the magazine 2 belongs. Do not replace the entire tool, only the tool. Then, the change detecting means 6 detects the tool change and sends a detection signal to the rewriting means 7.
Based on this detection signal, the rewriting means 7 sets the tool being rewritten and used to the use order 1 and the replaced tool to the last in the use order with respect to the use order of the life management file stored in the storage means 5. Then, the usage history is rewritten as unused. Specifically, first, the tool of T11110001 and the tool of T10000001 in the life management file stored in the storage means 5 as shown in FIG.
If the tool has a long life, the tool is replaced and the tool of T11110001 and the tool of T10000001 fall back as shown in Fig. 3 and the use order changes to 4 and 5, and the use history becomes unused. change.

The use order and the use history may be changed without changing the display order of the display screen. If the life of the tool has expired, it is not always necessary to replace all the tools that have reached the end of their life. The last tool may be the last one.

[Effect of the Invention] In the present invention, a life management file is stored in the storage means,
The replacement detecting means detects the replacement of a tool having a life, and the rewriting means manages each tool in a life management file. If there is a tool replacement, the life is managed in accordance with the progress of use by a signal of the replacement detecting means. Since the files are sequentially rewritten, the tool life can be managed efficiently and without waste. In addition, the tool can be changed without waste.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of an NC machine tool according to the present invention,
FIG. 2 is a diagram of a life management file before tool replacement according to the embodiment,
FIG. 3 is a life management chart after the tool exchange of the embodiment. 1 NC machine tool main body 2 Magazine 5 Storage means 6 Exchange detection means 7 Rewriting means

Continuation of front page (72) Inventor Shinichi Maejima 106 Mori Seiki Seisakusho Co., Ltd. 106 Kita-Goriyama-cho, Yamatokoriyama-shi, Nara Prefecture (56) References JP-A-57-27633 (JP, A) JP-A-60-44241 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B23Q 3/155 B23Q 3/157 B23Q 11/00 B23Q 17/09

Claims (1)

(57) [Claims] 1. In a magazine having a plurality of tools and an NC machine tool having a CN machine tool main body for performing the NC machining, a service life having a use history and a use order of a plurality of tools having the same function is provided. Storage means for storing a management file; replacement detection means for detecting a tool replacement on a tool magazine; and use of the replaced tool of the life management file stored in the storage means based on a signal from the replacement detection means. An NC machine tool comprising: a rewriting means for setting a history of an unused state to give priority to a use order of a tool in use and sequentially rewriting the history as the use progresses.