What is the purpose of a setup sheet in CNC machining?

The purpose of a setup sheet in CNC machining is primarily to offer information on tooling and machining parameters. This document serves as a vital resource for machinists as it details critical specifics about the setup required for a job, including tool selection, speeds and feeds, workpiece dimensions, fixture details, and any offsets that need to be applied. Having this information readily accessible helps ensure that the setup process is efficient and reduces the likelihood of errors during machining.

The accuracy and reliability of the setup sheet can greatly influence the quality and consistency of the machining process, enabling operators to produce parts that meet the required tolerances and finish specifications. It acts as a standardized reference that helps to streamline operations and can be particularly helpful in training new operators or when revisiting a job after some time.