Tomcat Machine Performance LLC developed SPEC, which is a spatial/ volumetric error analyzer for CNC machines. https:
Industrial News Buzz - Make sense of all the machine performance and machine tool metrology measurements with SPEC - Spatial Performance Error Correlation software by Tomcat Machine Performance. This powerful Windows based application takes machine geometry errors like angular axis pitch, roll, yaw, squareness and analyzes the data with linear straightness and positioning errors to calculate an equivalent volumetric accuracy value comparable to values obtained by performing 4 body diagonal measurements with a laser system. SPEC doesn't just sum up errors like traditional error budgeting spreadsheets that exaggerate errors. It processes the data through a comprehensive library of rules, follows right hand rule sign conventions, and uses logic based on best manufacturing processes.
The most reliable way to ensure machine performance applicability to your process is to compile and analyze all the single axis measurements. Now it is possible and calculations are more accurate than ever with SPEC. Build entire machine libraries with unique identification, input real or simulated data values, and see how each machine error contributes to the volumetric accuracy value. Make SPEC software part of the precision machine build and machine maintenance process.
