Ultra High Accuracy

Core Capabilities

Our systems incorporate both custom engineered and best-in-class standard modules to deliver unsurpassed accuracy, repeatability and durability. Our core capabilities are in the area of:

• Placement
• Process
• Engineering

Placement Capabilities

We have vast experience in high accuracy placement systems with placement accuracy down to the sub-micron level.  High placement accuracy is achieved by integrating state-of-the-art motion system with real-time corrections using vision results and global references, in combination with automatic periodic calibration, effective vibration isolation, and thermal management.

Our expertise in high precision motion stages includes:

• Air bearing stages (linear, rotary)
• Linear motor (linear)
• Direct drive torque motor (rotary)
• Linear encoder or Laser interferometer feedback

ATS is a world-recognized leader in the area of Vision systems. We have experience with:

• Multi-camera systems
• High speed vision systems
• Visible, UV, and IR imaging
• Post placement verification

Vibration isolation plays a vital role in providing a stable high accuracy platform. Our vibration isolation offerings include:

• Air spring mounts
• Variable compliance elastomeric mounts
• Air/torsion suspension vibration mounts
• Active damping system with instrumentation and controller

Surpassing our customers’ expectations, we provide expert thermal designs with:

• Temperature controlled assembly cell and nests
• Kinematic mounts for high accuracy tooling and optics
• Material thermal properties matching
• Temperature compensation for laser interferometer feedback

Our highly effective solutions include automatic calibration, drawing on the following toolkit:

• Calibration tools
  • Machine vision
  • NIST traceable vision reticule
  • LVDT/load cell/laser displacement sensor
  • Needle gauging tool
  • Custom calibration tooling
• Automatic Calibration
  • Axis error mapping
  • Axis orthogonality calibration
  • Tool point offsets calibration
  • Camera scale calibration
  • Center of rotation calibration

Process & Engineering Capabilities

Delivering ultra-high accuracy systems requires a strong process knowledge base built on experience, and the right engineering skills; ATS is well equipped with these capabilities, and leverages the following tools and techniques in conjunction with our skills to deliver leading edge solutions:

Force controlled placement

• Active force control (LVDT, load cells)
• Passive force control (Bearing slide, flexure, calibrated springs)

Dispensing

• Positive displacement
• Time-pressure
• Piezo-electric
• Pin transfer
• Capillary transfer
• Engineering Capabilities

We use Compensation Algorithms for:

• Thermal Expansion/Contraction Compensation
• Automatic Runtime Learning Routine to compensate for offset drifts

We provide Thermal and Stress analysis on components for:

• Specific thermal responses
• Part distortions caused by Thermal variations
• Constant temperature profile across the component (e.g. preheat stage, assembly nest)
• Flexure Analysis
• Customer Component Stress Analysis