JPS6453768A - Square column cutting and welding equipment - Google Patents

Abstract

PURPOSE:To improve working quality and accuracy and to increase working efficiency by giving linear motion to a working torch at the time of working a flat pat and giving rotation to a square column and retreating the working torch at the time of cutting a corner part. CONSTITUTION:At the time of working the flat part, when the working speed (v) is set on a control and input panel 32, it is converted into a pulse via an oscillator 33 and converted into an analog value by a degital-analog converter 36 through a flat part cutting gate 34 to drive a servomotor 38. A count value of a pulse counter 42 indicates a position of the torch 30 and when the torch attains the traveling limitation, the completion of the flat part working is recognized and a changeover signal to the corner part cutting is produced. At the time of cutting the corner part, when the working speed, etc., are inputted by shape inputs 32 and 43 of the square column, the speed (w) of an angle of rotation of the square column is obtained and a pulse with respect to the speed (w) of the angle of rotation is transmitted by a pulse oscillator 48. A servomotor 52 is driven by a servo amplifier 51 and the square column is rotated which is converted into an angle theta of rotation with a counter 55 and coordinates of the working torch are calculated to control a closed loop.