| 摘要 |
PURPOSE:To improve work efficiency considerably, in a device for inspecting or grinding scratch of steel pipe, by setting the position of scratch in material to be inspected immediately below a grinding device, and finishing grinding work through single carriage of the material corresponding to the depth and the length of the scratch. CONSTITUTION:A grinding motion control section 20 drives a lifting/lowering device 8, and a grinding section is set such that a grinding wheel 1 is retreated to a position slightly higher than a carrying area of material to be inspected, i.e. a pipe 19, then motors 12, 15 are rotated in predetermined directions so as to carry the pipe 19 spirally in the direction of an arrow. A scratch detector 10 detects a scratch in the circumferential face of the pipe 19 and the depth thereof. When the scratch detector 10 detects a scratch, the control section 20 stores the position and the length of the scratch as a scratch information based on output signals from respective rotary encoders 13, 16. When the scratch detector 10 finishes detection of scratch, the motors 12, 15 are driven based on the scratch information to position the starting point of grinding immediately below a previously stored position of the grinding wheel 1, then a grinding motor 7 is driven to rotate a grinding wheel spindle 5 so as to grind the scratch of the pipe 19. Grinding is carried out corresponding to the scratch information. |
