Process structure example

The following example of a crankshaft rod and piston assembly shows a process structure that involves both assembly and machining processes, which together describe a manufacturing process.

• Crankshaft assembly – the main process

Rod and piston – a subprocess

Assembly – assembly process to assemble the rod and piston

Rod – subprocess to capture the rod's manufacturing process

Raw material – operation to cut the raw material

NC machining rough – machining operation to rough the material

Heat treatment – operation to send the rough part through heat treatment to release stresses

NC machining finish – operation to machine the part to its final dimensions

Inspection – operation to inspect the part

End caps – subprocess to manufacture the end caps. It contains individual operations as shown in the example above.

Piston – subprocess to manufacture the piston. It contains individual operations as shown in the example above.

With the benefit of experience, standard process structures may be developed for your plant. Templates can be made from these processes to speed the workflow through your organization.

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