End-of-Arm Tooling Adapter Plate

EOAT systems frequently encounter loss of positional accuracy due to torsional forces and off-axis dynamic loads during rapid motion cycles. Adapter plates are machined from normalized high-grade aluminum alloys or 420 stainless steel to ensure geometric rigidity. Finite Element Analysis (FEA) is applied during design to control stress concentrations around bolt patterns and through-holes. Each plate maintains parallelism under load and is tested for out-of-plane deflection thresholds below 5 microns, ensuring stable TCP (Tool Center Point) retention even under extreme accelerations. 

Material

Aluminum 6061-T6, Steel 4140 (hardened), Stainless Steel 304

Dimensional Tolerances

Robot Flange Fit – ±0.02 mm; Tool Mounting – ±0.03 mm; Overall Thickness – ±0.05 mm

Robot Flange Mounting

Bolt Circle – ISO 9409-1 (or custom); Pilot Diameter – H7/h6 fit; Threads – M6–M12 (Class 8.8)

Tooling Mounting

Bolt Circle – Custom to tool; Dowel Pins – ±0.005 mm position; Hole Tolerance – H7 (reamed)

Flatness/Parallelism

Robot Side – ≤0.02 mm/100 mm; Tool Side – ≤0.03 mm/100 mm

Product Description

Robotic integration projects often suffer delays due to incompatible flange geometries, differing bolt circle diameters, and misaligned locating features between robot brands and tooling systems. Adapter plates are configured to comply with ISO 9409-1 interface standards and incorporate dual-pattern or multi-pitch configurations for bidirectional compatibility. Custom mounting schemas are CNC-milled with tight positional tolerances and concentricity control, enabling direct mechanical coupling between disparate robotic wrists and EOAT systems without requiring interface redesign or spacer plates. 

Surface Finish

Mounting Faces – Ra ≤0.8 µm (ground); Non-Critical – Ra ≤1.6 µm

Burr-Free Requirement

Laser-Deburred (ISO 13715 compliant); Edge Radius – 0.2–0.5 mm

Through/Threaded Holes

Clearance Holes – +0.1/-0 mm; Threads – 6H (ISO 965); Counterbores – ±0.05 mm depth

Protective Coating

Anodizing (Type III, 25–50 µm), Black Oxide (steel), Passivation (stainless steel)

Certification Standards

ISO 9409-1 (Robot Mounting), ISO 9001:2015, RoHS/REACH Compliant

Technical Advantages

Backlash originating at the robot-to-tool interface reduces path precision, especially in force-sensitive processes such as automated fastening, ultrasonic welding, or adhesive dispensing. Adapter plates are manufactured with matched dowel pin locations and transition-fit bore tolerances (H7/g6), eliminating micro-slippage. Surface flatness of the mating face is maintained within 2 microns to ensure rigid contact across the entire interface plane, and secondary locking features—such as serrated face patterns or eccentric pins—are integrated to resist loosening under cyclical loading. 

Frequent reconfiguration of EOAT setups in flexible robotic cells often necessitates full TCP recalibration, resulting in machine downtime and process variability. Adapter plates are designed to support repeatable modular tool changes via integrated kinematic couplings or mechanical zero-point referencing. When used with tool changers, the design maintains axial registration and angular orientation within ±0.02 mm and ±0.03°, respectively, removing the need for iterative calibration procedures after each tooling swap. 

 

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Industry Applications

Automotive Assembly Cells

Supports rapid EOAT changes for welding, sealing, and material handling robots with ISO-compliant mounting across multiple robot brands. 

Electronics PCB Handling

Provides precision alignment for vacuum grippers and micro-actuated tools used in SMT pick-and-place and optical inspection systems. 

Injection Molding Automation

Interfaces mold-side grippers and degating tools with robots operating in high-temperature zones and narrow access geometries. 

Metal Fabrication and Laser Cutting

Resists thermal warping and distortion when integrated with tooling in robotic plasma cutting, welding, or abrasive blasting systems. 

Battery Cell Packaging Lines

Maintains micron-level repeatability for pouch alignment tools, ultrasonic weld heads, and thermal compression grippers in battery assembly stations. 

Pharmaceutical Cleanroom Robotics

Enables tool interchangeability for sterile handling systems, ensuring contamination-free operation using anodized or passivated material variants. 

 

Resistance to Thermomechanical Distortion in Harsh Environments

Adapter plates subjected to high temperatures, particulates, or corrosive agents experience dimensional drift and loss of precision. Material selection considers thermal expansion, elevated-temperature strength, and galvanic compatibility. Passivated stainless variants suit welding and plasma-cutting zones, while anodized 7000-series aluminum provides low mass and thermal stability for high-duty automation. 

Uneven force transfer across EOAT joints leads to bolt fatigue and joint instability. Adapter plates are engineered to distribute axial, radial, and torsional loads through controlled geometries. Spot-faced bolt seats reduce bearing stress, and anti-rotation features—like key slots or splines—mechanically secure the interface without relying solely on torque retention. 

End-of-Arm Tooling Adapter Plate

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure interface repeatability across high-load EOAT systems?

Frigate machines all adapter plates with surface flatness within 2 microns and bore concentricity below 0.01 mm. Locating pins and transition-fit tolerances are used to maintain fixed alignment under dynamic loads. Bolt patterns are spot-faced to prevent torque-induced distortion. These features maintain TCP stability even under multi-axis acceleration and deceleration. 

What materials does Frigate use for adapter plates in corrosive or abrasive environments?

Frigate selects passivated 304/316 stainless steel for high corrosion resistance and durability in harsh processing conditions. For lightweight applications, hard-anodized 7075-T6 aluminum is used to prevent abrasive surface damage. Each material is validated for thermal expansion compatibility with adjacent robot and tooling interfaces. Material selection is driven by both structural performance and environmental exposure. 

How does Frigate support tool compatibility across mixed-brand robotic platforms?

Frigate offers dual-interface plates with ISO 9409-compliant geometry and custom secondary patterns for specific robot-tool combinations. Hole positioning accuracy is maintained under ±0.01 mm using CNC coordinate boring. Plates can accommodate metric and imperial fastener standards. This allows seamless integration of EOAT across ABB, Fanuc, KUKA, and other robot arms. 

What features does Frigate include to reduce shear load on fasteners?

Frigate incorporates dowel pin bores and anti-rotation features to offload shear forces from bolts. Load paths are designed to pass through the plate body instead of the threads. Chamfered bolt seats minimize micro-movement under vibration. These design practices extend fastener life and reduce mechanical wear at the joint. 

 

How does Frigate ensure quick tool changeover without loss of alignment?

Frigate integrates kinematic locators or pilot rings to enable precise repeatable positioning after every tool change. These features eliminate the need for post-change TCP calibration. Plates are compatible with automatic tool changers and zero-point clamping systems. Tooling can be swapped in under 2 minutes with positional accuracy preserved. 

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LOCATIONS

Global Sales Office

818, Preakness lane, Coppell, Texas, USA – 75019

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

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End-of-Arm Tooling Adapter Plate

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