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What is the difference between a robot, robotics and automation?
A robot is a programmable physical machine that performs tasks through movement and interaction. Robotics is the discipline of designing, controlling and using robots. Automation is broader: it makes a process operate with less manual intervention and can use robots, conventional machines or software alone.
Explanation, examples & sources
A conveyor with a fixed sequence is automation; a reprogrammable arm loading different parts is robotic automation. An invoice-routing workflow is software automation, not a physical robot. For a project brief, describe the task, inputs, outputs and exceptions before choosing a robot. That prevents buying an impressive manipulator when a fixture, feeder, conveyor or simpler software change would solve the actual problem.
No. Many industrial robots execute explicitly programmed movements and logic without a learned AI model. AI becomes useful when the task involves variability that is difficult to describe with reliable rules, such as recognising inconsistent objects or interpreting natural-language instructions.
Explanation, examples & sources
Start with the simplest approach that meets the requirement. A known part in a repeatable fixture may need coordinates and sensors, not machine learning. A mixed pile of variable objects may justify learned perception, while motion limits and safety remain controlled separately. Compare both approaches on failed cases, maintenance effort and recovery, not only a successful demonstration. Adding AI introduces data, evaluation and change-management work as well as potential capability.
What distinguishes a robot from an ordinary machine?
A robot is a kind of machine, not the opposite of one. Reprogrammability, controlled motion and adaptability distinguish many robots from single-purpose mechanisms. The applicable technical definition also depends on the robot category and standard; having motors, a touchscreen or an AI feature does not by itself settle the classification.
Explanation, examples & sources
Ask what can change without rebuilding the mechanism. Can it execute different paths, handle different objects and respond to sensing, or does it repeat one mechanically fixed action? This is useful for comparing flexibility, but it is not a legal conformity test. For purchasing, record the actual intended task and system boundary. A robot arm, its controller and an assembled production cell can carry different documentation and responsibilities.
Autonomy is a robot's ability to carry out a defined task without continuous human commands. It is task- and environment-specific, not a single all-or-nothing property. A machine can autonomously navigate a mapped warehouse while still requiring an operator to resolve blocked doors, dropped loads or unfamiliar situations.
Explanation, examples & sources
Define who chooses the goal, who plans movements, who monitors execution and who recovers failures. Then state the permitted environment: floors, lighting, traffic, object types and network conditions. A useful acceptance test counts interventions per completed task and records what triggered them. Do not call a remote-controlled demonstration autonomous merely because low-level balancing or obstacle avoidance runs onboard; those capabilities can coexist with human decisions.
An axis is a controlled joint or motion direction. Degrees of freedom describe independent ways a mechanism can move. A common six-axis arm can position and orient a tool in three-dimensional space, subject to its joint limits and geometry. More axes do not automatically mean greater accuracy or a better solution.
Explanation, examples & sources
A palletising task may need fewer orientation freedoms than welding around a complex part. Additional axes can help reach around obstacles or coordinate a positioner, but they add programming and collision-management considerations. Check the required tool orientations along the whole path, not only whether the tip reaches the target. Singularities and joint limits can make an apparently reachable pose awkward or unusable at the required speed.
How do payload, centre of gravity and reach affect robot selection?
Payload must account for the workpiece and everything the robot carries, including the gripper and adapters. The centre of gravity and inertia also affect permitted motion. Reach is only one geometric limit: the robot must achieve the required tool position and orientation while staying within its load and joint constraints.
Explanation, examples & sources
For an illustrative check, an 8 kg part plus a 3 kg gripper is already an 11 kg carried assembly before additional fixtures or services. A long offset can be more demanding than a compact load of the same mass. Model empty-tool and loaded states, approach clearances and acceleration. Use the specific manufacturer's load diagrams and controller options; a model name or headline payload is not enough to approve the application.
How do I choose between articulated, SCARA, delta and Cartesian robots?
Choose the mechanism around the motion and process. Articulated arms offer flexible orientation; SCARA robots suit many planar assembly and handling tasks; delta robots suit lightweight, rapid picking; Cartesian or gantry robots provide straight-axis motion and can cover large rectangular workspaces. None is universally best.
Explanation, examples & sources
Start with part mass, tool mass, orientations, cycle time, workspace and environmental constraints. Then compare complete applications, including feeders, fixtures, access for maintenance and product changeovers. A slower-looking robot can win if it simplifies the rest of the cell. Request a path simulation or representative trial with your parts rather than selecting solely by a maximum-speed number. Confirm that cable routing and peripheral equipment fit the chosen layout.
What is the difference between accuracy and repeatability?
Accuracy describes how close a robot gets to the intended true position. Repeatability describes how consistently it returns to the same position under specified conditions. A robot can be highly repeatable while consistently missing an externally defined target, particularly when its tool, base frame or calibration is wrong.
Explanation, examples & sources
A taught pick point may mainly depend on repeatability; drilling from imported CAD coordinates can demand good absolute accuracy across the workspace. State the measurement frame, load, temperature, speed and working region when comparing performance. Check the full chain: robot, fixture, gripper compliance, tool calibration and sensing. A catalogue repeatability figure is not the guaranteed tolerance of a completed manufacturing process. Validate at the actual points and orientations used in production.
Why is maximum robot speed not the same as production cycle time?
Cycle time includes the complete sequence: approach, gripping, movement, process time, release, checks and waiting for other equipment. Maximum joint or tool speed describes only part of that sequence. Acceleration, payload, path geometry, blending and protective measures may prevent the robot from reaching its headline speed.
Explanation, examples & sources
Break one representative cycle into timed steps and identify the bottleneck. Include awkward parts, retries and normal replenishment, not only the fastest clean run. A one-second motion saving has little value if a machine door adds ten seconds of waiting. Ask the supplier to document the exact load, program, peripheral timings and safety configuration behind a quoted cycle. Require sustainable throughput and quality together rather than a video showing one rapid movement.
What environmental and installation constraints should I check before buying a robot?
Check the robot and controller separately for temperature, dust, liquids, electrical supply, mounting loads, available space and maintenance access. Also evaluate process hazards such as welding fumes, abrasive dust or explosive atmospheres. A general industrial robot is not automatically suitable for painting, washdown, outdoor use or cleanrooms.
Explanation, examples & sources
Build a site checklist with photos and measured conditions. Include foundation stiffness, cable bend radius, extraction, compressed air, electromagnetic conditions and room to replace components. Confirm the exact product variant and any required protective equipment with its manufacturer. Avoid assuming that a protective cover creates an explosion-protected or hygienic system. Agree who supplies each utility and what must be ready before installation; these omissions can delay a project even when the arm itself is correctly sized.
Specialist assessment is required for explosive atmospheres and other regulated hazardous environments.
Grippers, industrial communications and integration
INT-001
How do I choose a pneumatic, electric or vacuum gripper?
Choose around the workpiece and process: geometry, surface, fragility, mass, acceleration, positioning and the consequences of losing the part. Pneumatic, electric and vacuum devices offer different control and infrastructure trade-offs. The gripper's own mass, fingers, adapters and hoses also consume robot payload and affect inertia.
Explanation, examples & sources
Test representative parts, including the worst surface condition and dimensional variation. Mechanical gripping needs adequate contact geometry and force without damaging the item. Vacuum requires suitable sealing or airflow; specialised high-flow systems can handle some porous materials. Electric actuation can offer adjustable positions and force, but confirm the actual feedback and interface. Define what happens after air, vacuum or power loss. Select the complete tooling arrangement, not a gripper solely from its maximum advertised gripping force.
How do PROFINET, EtherNet/IP, EtherCAT, OPC UA and MQTT differ?
These technologies serve overlapping but different roles. PROFINET, EtherNet/IP and EtherCAT support industrial device/control communication with distinct protocols. OPC UA adds structured information exchange and modelling. MQTT is a publish/subscribe messaging protocol. A shared Ethernet connector does not make devices protocol-compatible or establish equivalent timing and safety behaviour.
Explanation, examples & sources
Start with the required data and deadlines: cyclic I/O, motion coordination, recipes, diagnostics or cloud telemetry. Then verify the exact robot/controller option, device role, firmware, configuration files and network design. Gateways can translate selected data, but may not preserve every diagnostic, timing or safety property. Keep control and supervisory requirements separate. Document the agreed signal map and failure behaviour so that a protocol choice becomes an integration contract rather than a list of compatible-looking logos.
What is a digital twin, and how is it different from a 3D model?
A 3D model represents geometry. A useful digital twin additionally represents relevant behaviour or state and maintains a defined relationship with a real asset. The term is used broadly, so ask what is synchronised, how often and for which decision. A visually accurate scene is not automatically a validated operational twin.
Explanation, examples & sources
Define a purpose such as reach checking, virtual commissioning, maintenance analysis or energy assessment. Each purpose requires different data and fidelity. Verify geometry, coordinate frames, controller logic and timing only to the degree needed for the decision, then document remaining uncertainty. For a connected twin, track data quality and version alignment with the physical system. Avoid promising real-time prediction or fault diagnosis merely because a dashboard displays a live robot animation.