Boots – shoes – and leggings
Patent
1989-08-21
1991-11-19
Ruggiero, Joseph
Boots, shoes, and leggings
21912179, 21912183, 36447403, G06F 1546, B23K 2602
Patent
active
050670867
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a three-dimensional shape machining laser device for performing three-dimensional machining, and more particularly to a three-dimensional shape machining laser device having the function of correcting teaching data.
BACKGROUND ART
CNC laser machining devices including a combination of a laser oscillator and a numerical control (CNC) apparatus have come to be widely used. By combining high-speed machining provided by the laser machining device with complex contouring control achieved by the numerical control (CNC) apparatus, machining of a complex shape can be performed in a non-contact fashion and at high speed. Particularly, three-dimensional machining, which cannot be effected with a conventional punch press, nibbling machine or the like, can be achieved by three-dimensional shape machining laser devices which have been put to practical use. To carry out three-dimensional machining with the three-dimensional shape machining laser device, not only X, Y and Z axes but the pose of a nozzle arranged at a distal end portion of the device needs to be controlled. Usually, the nozzle is controlled in terms of .alpha. and .beta. axes. In the three-dimensional shape machining laser device, therefore, the .alpha. and .beta. axes in addition to the X, Y and Z axes must be controlled by means of machining commands.
However, in most cases, it is very hard to program such commands based on drawings. Therefore, geometric data of shape is usually collected while the distal end of the nozzle is positioned on an actual work, so that NC commands may be generated based on the data obtained. This process is accomplished through manual operation of teaching box by an operator.
In this teaching process, however, the nozzle is positioned on the work through manual operation, and, after the pose of the nozzle is controlled, a memory button is depressed so that the positions of the respective axes then assumed are used as NC commands. In consequence, precision of the NC commands obtained by the teaching i.e., precision of the teaching data, depends on positioning conditions of the nozzele and accordingly is not very high in general.
If an error produced in this process is so great that it cannot be absorbed by tracer control, the corresponding part of the work cannot be machined and is left unprocessed.
SUMMARY OF THE INVENTION
In view of the circumstances described above, it is an object of the present invention to provide a three-dimensional shape machining laser device having the function of correcting teaching data.
To achieve the object, the present invention provides a three-dimensional shape machining laser device for performing three-dimensional machining, which comprises a teaching box for teaching NC commands relating to X, Y and Z axes and a pose of a nozzle, command storage means for storing the NC commands, NC command execution means for executing the NC commands, a sensor arranged in the proximity of the distal end of the nozzle, for detecting the distance from a work, tracing means for controlling the gap between the nozzle and the work to a predetermined value in accordance with the distance detected by the sensor, interrupt control means for performing tracer control during execution of the NC commands, detecting a deviation from a path according to the NC commands, and for interrupting the excution of an NC command program when an amount of the deviation exceeds a predetermined value, correction value calculation means for calculating correction command values used for correcting coordinate values of the X, Y and Z axes, based on the amount of devation, the coordinate values and pose data of the nozzle, and correction means for correcting command values in accordance with the correction cammand values.
The present invention also provides a three-dimensional shape machining laser device for performing three-dimensional machining, which comprises a teaching box for teaching NC commands relating to X, Y and Z axes and a pose of a nozzle, command storage means f
REFERENCES:
patent: 4626999 (1986-12-01), Bannister
patent: 4659900 (1987-04-01), Gilli et al.
patent: 4794222 (1988-12-01), Funayama et al.
Iehisa Nobuaki
Yamazaki Etsuo
Fanuc Ltd.
Ruggiero Joseph
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