At its most basic, press-fit assembly is a simple process. An assembler loads parts into a fixture and actuates the press. After the machine has done its job, the worker unloads the assembly and the process starts all over again.
Even with that basic setup, an experienced worker can produce quite a few assemblies per hour. However, with a little ingenuity and attention to detail, engineers can increase productivity substantially. And, with a little investment in automation, the press-fitting process can really take off.