Patent ID: 6522941
Filing Date: 2003-02-18
Classification: B23K

Abstract:
A three-dimensional linear processing machine capable of performing a three-dimensional linear cutting machining on a pipe with a cutting torch, comprising:a pipe rotating and holding means, capable of positioning and holding the pipe to be machined at any rotational angle position around an axial center of the pipe; a first memory means for storing machining modes concerning said pipe classified into a plurality of shape patterns by machining edge; a second memory means for storing dimensional data items necessary for machining of said shape pattern concerning respective shape patterns classified by said machining shape; a display; a shape pattern display control means for displaying said plurality of shape patterns on said display, selectable by an operator; an input means of said shape pattern; a dimensional data display control means for selecting and displaying on said display said dimensional data item concerning said input shape pattern from said dimensional data items stored in said second memory means concerning a specific shape pattern input from said input means of said shape pattern; an input means of dimensional data capable of inputting dimensional data corresponding to said dimensional data item on the basis of said dimensional data item displayed on said display; a linear machining program composing means for composing three-dimensional linear machining program concerning said pipe to be machined on the basis of said dimensional data corresponding to the input dimensional data item and said input shape pattern; a third memory means for storing a shift quantity detecting program for measuring installation position shift quantity of said pipe with respect to said pipe rotating and holding means when said pipe to be machined is installed on said pipe rotating and holding means; a distance measuring means provided at said cutting torch, capable of detecting and computing a distance between a surface of said pipe to be machined and said cutting torch; said shift quantity detecting program having a process for measuring installation position shift quantity of said pipe to be machined with respect to said pipe rotating and holding means through said distance measuring means by computing shift quantity measurement starting position corresponding to cutting position of said pipe to be machined on the basis of dimensional data concerning said pipe to be machined input from said input means of said dimensional data, by positioning said cutting torch at said shift quantity measurement starting position computed, and by moving said cutting torch with respect to said pipe from said shift quantity measurement starting position; an installation position shift quantity measuring means for reading out said shift quantity detecting program stored in said third memory means and for measuring installation position shift quantity of said pipe held by said pipe rotating and holding means; and a machining control means for executing said three-dimensional linear machining program concerning said pipe to be machined composed by said linear machining program composing means on the basis of measuring result of said installation position shift quantity measuring means, amending said installation position shift quantity by said pipe rotating and holding means, and for machining said pipe to be machined held by said pipe rotating and holding means.