US 2009/0250445 A1Published application

Automatic Cutting Device and Production Method for Beveled Product

AssigneeKotmatsu Industries Corporation

InventorsYoshihiro Yamaguchi, Ikuo Kamada, Takahiro Iriyama

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Abstract

A plasma cutting device performs cutting in a plurality of stages. In a first cutting sub-process, a manufactured product is cut out from a base material upon a stage according to an NC program. Next, images of respective regions in the vicinities of proper positions at two corner points of the manufactured product which has been cut out are photographed by an image sensor, the actual positions of these two corner points of the manufactured product are detected from these images which have been photographed, and the translation distances and the rotational angle between the actual positions which have been detected and the proper positions are calculated. The NC program is corrected. And, in a subsequent cutting sub-process, additional cutting for beveling is carried out upon cutting surfaces at the outer circumference of the manufactured product, according to the corrected NC program.

Claims17

Dependent claims

An automatic cutting device comprising:

a stage for a base material to be placed upon;
a cutting tool;
an image sensor which has an image capture region;
a tool shift mechanism for, with respect to said stage, shifting said cutting tool, changing an angle of said cutting tool, and moreover shifting a photographic region of said image sensor;
and
a controller which controls an operation of each of said cutting tool, said image sensor, and said tool shift mechanism, according to an NC program;
wherein said controller comprises:
a first cutting sub-process control means which, according to said NC program, performs control so as to execute a first cutting sub-process of cutting said base material which has been placed upon said stage with said cutting tool and cutting out a manufactured product;
an image capture control means which, after said first cutting sub-process has been executed, performs control so as to set said image capture region of said image sensor to at least a single region which includes proper positions of at least two peculiar points upon said manufactured product, which has been cut out, upon said stage which are defined by said NC program, and so as to acquire from said image sensor an image of said at least a single region;
a peculiar point detection means which analyzes said image of said at least a single region which has been acquired by said image sensor, and detects actual positions on said stage of said at least two peculiar points of said manufactured product which has been cut out;
a program correction means which corrects said NC program so as to match it to the actual position of said manufactured product, which has been cut out, on said stage, according to said actual positions of said peculiar points which have been detected;
and
a second cutting sub-process control means which, according to said corrected NC programs, performs control so as to execute a second cutting sub-process of performing additional cutting with said cutting tool upon said manufactured product, which has been cut out, on said stage.

10 more elements

An automatic cutting device, comprising:

a stage for a base material to be placed upon;
a cutting tool;
an image sensor, having an image capture region, for photographing a photographic region upon said stage;
a tool shift mechanism for, with respect to said stage, shifting said cutting tool, and moreover shifting said photographic region of said image sensor;
a display screen for displaying an image of said photographic region which is outputted from said image sensor;
a reference point designation means for an operator to designate any desired position upon the image displayed upon said display screen as a reference point upon said base material;
a shift/stop command input means for said operator to input a shift command for shifting said image capture region of said image sensor, and a stop command for stopping the shifting of said image capture region;
and
a controller which controls an operation of each of said cutting tool, said image sensor, and said tool shift mechanism;
and wherein said controller comprises:
an image capture region shift control means which, if said operator has inputted said shift command using said shift command input means, performs control so as to shift said image capture region of said input image sensor in response to said shift command which has been inputted;
and, if said operator has inputted said stop command using said shift command input means, performs control so as to stop the shifting of said image capture region of said input image sensor in response to said stop command which has been inputted;
a display control means which acquires an image of said image capture region from said image sensor, and displays it upon said display screen;
and
a reference point detection means which, when the shifting of said image capture region of said image sensor is stopped, if said operator has designated, using said reference point designation means, a desired point upon said image of said image capture region which is displayed upon said display screen, detects coordinates of said designated point as being coordinates of a reference point upon said base material.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/083,374Filed 27 Oct 2006
Priority: JP 2005-31321327 Oct 2005
Published: 8 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B23K 10/006
Welding or cutting by means of a plasma: control circuits therefor
G05B 19/404
Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to…
G05B 2219/37555
Measurements: camera detects orientation, position workpiece, points of workpiece
G05B 2219/45044
Nc applications: cutting