The 3D Model in the Manufacturing Process of Forged Products

In order to assess their dimensions early, forgings have previously been sized after heat treatment with a measuring string in the heat treatment shop. The forgings have then been transported to the machining shop followed by accurate remeasurement for marking, making the original measure pointless. To improve on this inefficient process, we have installed a three- dimensional (3D) laser scanner (Leica Absolute Tracker ATS600) which enables us to measure products quickly and accurately. Marking and reporting with the ATS600 are essential. Firstly, the data acquired by ATS600 is polygonally-transformed using a computer. Next, the amount of excess material of the forgings is assessed by comparing the polygonal data with the computer-aided design (CAD) model of the product. Finally, according to the optimized dimension data, the product can be marked anywhere using a laser on the surface of the product. Furthermore, the marking instantly provides a paper reporting the maximum and minimum of the excess material at arbitrary points on the product. Consequently, using this device for measurement and ruling has successfully lessened operation time, resulting in shortening lead times.