Robots for Optical Filter Finishing: A Quality Checklist

Optical filters can be small, fragile and sensitive to surface damage, making robotic handling a quality challenge as well as a throughput question. In a customer story listed on 28 September 2026, ABB describes an Andover Corporation system that automates chamfering of optical filter edges. The reported results are specific to that supplier-described installation. Published 2026-10-31 04:05:59 -04:00 (America/New_York).

How the described process works

ABB says integrator Minuteman Automation Systems built a modular cell around a GoFa collaborative robot. The robot retrieves a filter, moves it to a centering station and positions it in a rotating diamond chamfer bowl. The supplier reports approximately 500 filters processed in under four hours under the case conditions.

A buyer should ask how that result was measured, including part mix, loading, inspection and any interruptions. It is not a guarantee for a different diameter, coating, finish or production schedule. The relevant comparison is the cost and quality of good parts through the complete process.

Specify the part and finish

Provide samples covering the intended diameter, thickness, coating and expected variation. Define the acceptable bevel geometry, surface condition and inspection method with qualified optical manufacturing staff. A fast robot path has little value if handling introduces scratches or the finished edge is outside the product specification.

Ask how the gripper contacts the component, whether a vacuum cup leaves residue and how damaged or missing parts are detected. Check the full path from tray to centering station, processing tool and finished collection. A protective material that works for one coating may not be appropriate for another.

Control wear, coolant and changeovers

Finishing tools wear over time. Establish how their condition is inspected, when they are replaced and what checks follow replacement. Confirm the required coolant, cleaning procedure and separation of finished parts from waste. The supplier should explain how process settings are recorded and who can approve changes.

Test several product sizes and realistic changeovers, including the time needed to replace a gripper or adjust the centering station. Include start-up, normal stops and restart. If a component breaks or is dropped, define a safe recovery method and a way to identify any potentially affected parts.

Accept the whole cell

Measure good filters per shift, inspection failures, rework, stoppages and operator intervention over a representative period. Compare results with the existing method using the same quality criteria. Include the cost of fixtures, tooling, consumables, maintenance, training and quality inspection when calculating a potential return.

Collaborative features do not remove the need for a risk assessment. The rotating tool, gripper, coolant and nearby work all need evaluation in the actual installation. Agree on guarding, access, isolation and maintenance procedures with qualified personnel before production begins.

Prepare a support plan

Before sign-off, request a list of spare vacuum cups, sensors and finishing consumables, together with their expected replacement procedures. Identify who will support the robot, tooling and process if quality changes after handover. Training should cover inspection of fragile components and recovery from faults as well as normal production, so the cell can be maintained consistently across shifts.

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