What is indicated by a negative offset in tool measurement?

A negative offset in tool measurement indicates that the tool is too short. In CNC machining, tool offsets are used to compensate for the length and diameter of tools to ensure precision during machining operations. When the offset value is negative, it means that the programmed tool length exceeds the actual length of the tool being used. This discrepancy necessitates a correction to ensure that the tool performs as intended, typically by adjusting the tool length value used in the CNC program.

Understanding tool offsets is crucial because an incorrect tooling measurement can lead to improperly sized parts or even damage to the tooling or workpiece. Therefore, identifying that a negative offset represents a shorter-than-expected tool is crucial for effective CNC operation and precise machining outcomes.