Diaphragm Flexure - Strain Field

Modal Analysis
Process Optimization - Improved Productivity
  • By measuring the machine structure's Frequency Response Function (FRF) we are able to optimize the machining parameters (spindle speed/depth of cut) through an analytical approach. This approach leads to increased productivity as well as increased quality due to stable and optimized machining conditions 

Diaphragm Flexure - Stress Field

Statistical Process Control
Process Stability and Control
  • Statistical process control (SPC) is a method of quality control which uses statistical methods. SPC is applied in order to monitor and control a process. Monitoring and controlling the process ensures that it operates at its full potential. At its full potential, the process can make as much conforming product as possible with a minimum (if not an elimination) of waste (rework or scrap). wikipedia
  • To assure part interchangeability and minimal part-to-part variation
  • Trend tracking, limit rules to ensure process stability
FEA Driven Design and Validation
Process Simulation and Design Verification 
  • Multi-physics design simulation and verification prior to committing to hardware (cost savings)
  • Providing insight into various physical properties ensures design meets safety factors and performance characteristics 
Machine Condition/Process Monitoring
Spindle Harmonics -  Amplitude
  • To ensure special cause variations (excessive spindle vibrations) do not impact long term process stability, we continuously monitor the vibrational amplitude of the machine's spindle to ensure that it is within prescribed limits from baseline
  • To prescribe a more determined preventative maintenance program
  • This feedback allows us to adjust process parameters to ensure ideal conditions are utilized in all cases

Precision Dynamics LLC Micro-Machining

Multi-Sensor Optical Metrology
Key features 
  • Measurement uncertainty 1.5 + L/500 um
  • Auto calibrating zoom lens
  • Collimated mono-chromatic light source to reduce edge effects
  • Statistical Process Control (SPC) software for monitoring and trend tracking
Micro Hard-Milling

Key features 

  • High speed linear motor driven 3-axis CNC machining center
  • Machining volume: 200 mm x 300 mm x 200 mm
  • Feature sizes down to 5 um
  • Material hardness up to HRC-55
  • Minimum programmable resolution of 100 nm
  • Very stable machining platform due to a robust thermal management system which effectively transfers localized heat sources away from the machine casting
  • HSM (High Speed Machining) allows for faster material removal rates, smaller cutting forces which translates to lower residual stresses on the workpiece material and reduced costs for the clients
  • Spindle speed up to 50k rpm
  • Implemented scoping vision system for in-situ process monitoring
  • Implemented data acquisition/sensor feedback for process monitoring and real-time process analysis

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