Double Gantry System

Double gantry on granite base with twin synchronized axes

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The solution in detail

Description Requirements Specification

High-volume production lines need two synchronized gantries that keep tooling or sensors perfectly aligned while hitting sub-micron tolerances. JAT’s Double Gantry System rides on a rigid granite base to stop racking and vibration, even during 0.75 m/s moves and 5 m/s² bursts. Optical scales provide 0.2 µm resolution and ±1 µm reproducibility across an 850 × 750 × 150 mm envelope, securing process accuracy shift after shift.

Demands

24 ⁄ 7 duty cycle with minimal positional drift
Micron-level precision in a fixed installation space
Rigid base to suppress vibration during synchronous motionj
Fast point-to-point travel up to 0.75 m/s for tight takt times
Cable capacity for extra cameras, sensors or dispensers

Implementation

Twin servo gantries coupled through real-time control for lock-step moves
Granite base machined to <3 µm flatness ensures thermal stability
Ground ball screws with rising spindles cut backlash and boost thrust
Absolute optical encoders deliver 0.2 µm feedback, no homing needed
Oversized energy chains pre-routed for clean cable management

Overall system:

Max. velocity: 0,75 m/s
Max. acceleration: 5 m/s²
Reproducibility: ±1 µm
Positioning resolution: 0,2 µm
Accuracy of height/side: <3 μm
Travel: 850 x 750 x 150 mm

Double Gantry System

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