Shri Prahlada inaugurating the CMM facility


VFW 3D CNC Coordinate Measuring Machine

Defence Research and Development Laboratory (DRDL), Hyderabad, has Commissioned Retrofitted and Upgraded VFW 3D CNC Coordinate Measuring Machine (CMM). The CMM facility is used for alignment checks of integrated missiles, measurement of critical dimension geometrical and form accuracies of missile hardware. Right from inception, machine has been the principal workhorse of DRDL in assessing inter-stage final quality of integrated missiles, sub-assemblies and related tooling.

The machine has a measuring range of 15.0 m (X-axis), 2.4m (V-Axis ) (shared by two columns) and 2.4m (Z-axis). The then state-of-art technology controller, motors, drives, feedback systems and application software have become obsolete over a period of time. Recently, the machine was retrofitted and upgraded with the state-of-art technology. The upgraded machine is equipped with Renishaw UCC1 controllers, motors, drives, Renishaw linear scale feedback systems, Renishaw PH10M motorised probe heads and CAD-based VDMIS V 4.8 metrology application software. Advanced CAD based application software enables CNC programs generation in virtual environment and the volumetric measurement uncertainty of the upgraded machine is less than 200 microns over full range.