A program editing device is configured such that, when an arc-shaped partial path is selected from a machining path displayed on a display unit based on route information of each of plural blocks, the program editing device calculates a change amount of the radius of curvature of the selected partial path in accordance with an operation of changing the state of the arc of the selected partial path and revises the block corresponding to the selected partial path based on the change amount.

A component having a first part and a second part. The first part has a first interface surface and the second part has a second interface surface that is connected to the first interface surface via a bond. A digital profile of the first interface surface is used to shape the second interface surface to fit against the first interface surface with minimal to no gap therebetween before forming the bond. The digital profile is developed by scanning the first part with a scanner and the second part is shape by cutting or milling with a robotic arm that acts in accordance with a digital profile data read by a controller. The two parts are bonded via a weld that is automatically guided by the digital profile.

A program editing device is configured such that, when an arc-shaped partial path is selected from a machining path displayed on a display unit based on route information of each of plural blocks, the program editing device calculates a change amount of the radius of curvature of the selected partial path in accordance with an operation of changing the state of the arc of the selected partial path and revises the block corresponding to the selected partial path based on the change amount.