Consistent, repeatable lens blocking for every blank type — soft, GP, scleral, and IOL/ICL
The quality of a specialty contact lens or IOL/ICL edge begins long before the lathe makes its first cut. It begins at blocking. Concentricity, tilt, and squareness at the blocking stage determine whether your DAC lathe can realize its full edge contouring capability — and they determine whether your finished lenses meet specification on the first pass or require rework.
The DAC Precision Blocking System is engineered to deliver micron-level accuracy and repeatability at every block, regardless of lens type, blank size, or production volume. No compromises for high-volume stock runs. No compromises for individual prescriptions. One system, every lens type, every time.
Matched to your DAC lathe from the ground up
The DAC Precision Blocking System is designed as an integrated complement to the DAC lathe — not a standalone accessory. The blocker’s collets are manufactured to the same high-accuracy specifications as the DAC lathe collets, ensuring that the tolerance stack between blocking and machining is minimized by design. First-side and second-side part handling are both blocked with the same high degree of accuracy and repeatability, with minimum operator attention.
With the DAC Precision Blocking System integrated into your process, you can take full advantage of your DAC lathe’s edge contouring capability and produce lenses with fully contoured, finished edges — with confidence, at volume.
Universal application across lens types and processes
Soft lenses, GP lenses, scleral lenses, intraocular lens blanks — the DAC Precision Blocker handles the full range of lens types and blocking processes without compromise. The system accommodates blocking with either wax or tape, and handles 1/2 in material buttons, finished base curve arbor blocking, and transfer blocking arbor-to-arbor. Six independent blocking tables, each with individually configurable parameters, allow the system to be optimized for specific lens types and wax formulations without resetting global parameters.
Intelligent wax management for consistent dosing and minimal downtime
Wax quality and temperature consistency directly affect blocking accuracy. The DAC Precision Blocking System’s PLC-controlled wax management delivers precisely dosed, temperature-controlled wax every time. Wax temperature is programmable up to 130°C (266°F), with all parameters set and monitored through the colored LCD touch-screen interface.
Two interchangeable wax pot and dispense assemblies are supplied with each system, enabling fast switching between wax types with minimal downtime. The on-board timer for wax pot warm-up — configurable with different time settings for each work day — means your operators arrive to a blocker that’s ready to run. No waiting. No manual warm-up management.
PLC-controlled precision with an intuitive touch-screen interface
All operational functions of the DAC Precision Blocking System are controlled by a Mitsubishi FX5 PLC with Ethernet connectivity — providing the reliability, repeatability, and networked integration that modern lens manufacturing facilities require. The colored LCD touch-screen interface keeps all important parameters accessible from the main menu: wax vs. tape blocking, blocking table selection, wax air cooler, temperature settings, cool-down times, and dosing volumes. Strong, stable machine construction maintains micron accuracy across the service life of the equipment.
Key benefits
- Micron-level accuracy and repeatability — consistent concentricity, tilt, and squareness on every blank
- Universal blocking: soft, GP, scleral, and IOL/ICL blanks in one system
- Collet accuracy matched to DAC lathe collets — minimizes tolerance stack from blocking through machining
- First and second side blocking with equally high repeatability
- Six independently configurable blocking tables — optimized parameters per lens type
- Supports wax blocking, tape blocking, base curve arbor, and transfer blocking applications
- Interchangeable wax pots minimize changeover time when switching wax types
- On-board wax warm-up timer — operators start work immediately with no waiting
- PLC-controlled with Ethernet connectivity for process integration and monitoring
- LCD touch-screen interface — intuitive parameter access and adjustment
- Enables full realization of DAC lathe edge contouring capability
Technical specifications
programmable up to 130°C (266 F)
12.7 mm Dia X 13.0 mm Deep (0.5 in x 0.512 in)
Mitsubishi FX5 PLC with ethernet connectivity
Upper and Lower, fitted as standard, Special sizes available upon request
76.2 mm (3.0 in)
Installation requirements
100 – 240 VAC, single phase, 50/60 Hz, 8 A
30 l/min@ 5 bar (1 SCFM @ 75 PSIG)
Recommended air quality: Class 4 per ISO 8573-1:2010
Nominal range: 20 – 23°C (68 – 74°F) maintained at +/- 1°C (+/- 2°F)
381 mm X 489 mm x 507 mm (W x D x H)
15 in x 19.3 in x 20 in (W x D x H)
Floor 73kg Shipping 114 kg
160 lb 250 lb
