The second step is to create a new file called "fanuzhijia." Select the NX4.0 "add existing parts" command to display the "select parts" dialog box. In this part, we mainly assemble the fan bracket. The parts involved are "8" end bracket, "9" vertical pin, "10" vertical bracket, "11" bracket pin and "12" connecting rod. Click the "8" option in the end box of the part file, and the "part name" dialog box will appear. Select the part command "9" to add the existing part. Click "ok", and the "matching condition" dialog box will appear.