Cutting – Processes
Patent
1992-03-26
1994-04-05
Bilinsky, Z. R.
Cutting
Processes
83 767, 83552, 483 28, 483 5, B21D 2802
Patent
active
052994775
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method of selecting a tool in a punching press machine, and in particular to a method of selecting a tool in a punching press machine which is provided with a multi-tool holder including a plurality of punch tools.
2. Description of the Related Art
Conventional punching press machines are equipped with a magazine having a plurality of tool holders in which one punch tool is changeably mounted, so the punching press machines machine a workpiece by means of a punch tool which is selected from a plurality of punch tools according to indexing of the magazine and change the punch tool as occasion demands. When producing various products of a small amount, changing of the punch tools are frequently carried out, whereby productive efficiency lowers.
So, a multi-tool holder mounting a plurality of punch tools may be utilized. In a case of selecting a desired punch tool in this type of punching press machine, it is required to index the multi-tool holder as well as index the magazine. For this reason, conventionally, the amount of rotation of the magazine and multi-tool holder must be individually designated in machining programs. However, it is very troublesome to designate respective amounts of rotation of the magazine and the multi-tool holder each time when a selected punch tool is designated for selection, and it requires excess labor to make machining programs.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a method of selecting a tool in a punching press machine equipped with a multi-tool holder, which is capable of easily designating a punch tool for selection.
In order to achieve the above-mentioned object, the present invention provides a method of selecting a tool in a punching press machine equipped with a plurality of tool holders including at least one multi-tool holder in which a plurality of punch tools are mounted. The method of selecting a tool comprises the steps of reading machining programs which include tool selection commands consisting of a holder designation code for designating any one of a plurality of tool holders and a tool designation code for designating at least any one of a plurality of punch tools mounted in the designated tool holder, and carrying out indexing of the magazine and the tool holder relating to the read tool selection command in accordance with the holder and tool designation codes constituting the tool selection command every time when a tool selection command is read from the machining programs.
As described above, according to the present invention, when the punching press machine is operated in accordance with the machining programs including the tool selection commands consisting of the holder designation code for designating any one of plurality of tool holders which are mounted to the punching press machine and contain a multi-tool holder having a plurality of punch tools, and the tool designation code for designating any one of a plurality of punch tools mounted in the designated tool holder, indexing of the magazine and the tool holder is then carried out in accordance with the holder and tool designation codes constituting the tool selection command which is read from the machining programs, whereby, a desired punch tool can be accurately selected from a plurality of punch tools mounted in the punching press machine. And further, unlike the conventional method which designates respective amount of rotation of the magazine and the tool holder in order to select the desired punch tool, according to the present invention, if only tool selection commands consisting of the holder and tool designation codes are entered in the machining programs, the desired punch tool can be simply selected, whereby it is possible to easily make the machining programs.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic diagram illustrating an operational principle of a method of selecting a tool according to an embodiment of the present invention; and
FIG
REFERENCES:
patent: 4555966 (1985-12-01), Klingel
patent: 5048385 (1991-09-01), Eckert et al.
patent: 5062337 (1991-11-01), Johnson et al.
patent: 5076127 (1991-12-01), Otto et al.
Bilinsky Z. R.
Fanuc Ltd.
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