KUKA KR 3 AGILUS Operation and Maintenance Safety Essentials

KUKA KR 3 AGILUS Operation and Maintenance Safety Essentials

KUKA KR 3 AGILUS is a six axis industrial robot designed for miniaturization and high cycle scenes. The specific model KR 3 R540 is commonly used for tasks such as tool handling, workpiece processing, and product transportation. It has a compact structure, weighs approximately 26.5 kg, has a rated load of 2 kg, a maximum total load of 3 kg, a maximum range of motion of 541 mm, and a pose repeatability accuracy of ± 0.02 mm. It is suitable for various installation positions such as floors, roofs, and walls. For on-site engineers, what truly affects stable operation is often not a single parameter, but the coordination of installation, load, safety circuits, stopping stroke, connecting cables, and maintenance cycles. The following summarizes the key technical points of this model from the perspective of operation and troubleshooting.

Mechanical Structure and Axis Parameters

The KR 3 AGILUS robotic arm adopts a 6-axis light metal die-casting articulated arm motion system, with each axis equipped with a brake. The drive unit and live wires are arranged inside the cover plate to prevent dirt and moisture. The main components include the robot wrist, forearm, boom, turntable, base, and electrical equipment. The wrist is composed of A4, A5, and A6, and the forearm is connected to the upper arm through an A3 gearbox. The upper arm is located between the turntable and the forearm, and the turntable performs A1 rotational motion. The base is the base of the robot. The back of the base is equipped with an A1 interface, which connects the robot's mechanical system and control system.

In terms of axial motion range: A1 is ± 170 °, A2 is -170 °/50 °, A3 is -110 °/155 °, A4 is ± 175 °, A5 is ± 120 °, A6 is ± 350 °. At rated load, the speeds are approximately A1 530 °/s, A2 529 °/s, A3 538 °/s, A4 600 °/s, A5 600 °/s, A6 800 °/s. The zero calibration positions are A1 0 °, A2-90 °, A3 90 °, A4 80 °, A5 0 °, A6 0 °. If the robot is not operating on the ground, the tilt position angle must be accurately recorded in WorkVisual. The ground, walls, and ceiling are configured at different angles; Error in angle recording may lead to unexpected movement and/or overload of the robot.

Installation and foundation fixation

The foundation fixation usually uses a bottom plate with a fixing device, chemical anchor bolts, and positioning pins. The concrete foundation should meet the requirements of C20/25, with a flat and smooth surface, and no insulation or mortar layer is allowed between the bottom plate and the concrete. If the surface is uneven, it can be leveled with finishing mortar, but there should be no finishing mortar in the area below the hexagonal bolt. When installing, first determine the position of the bottom plate, check that the horizontal deviation is less than 3 °, then drill holes, install anchor bolts according to the manufacturer's instructions, and wait for the chemical anchoring agent to harden. When using chemical anchor bolts, anchor pipes and anchor bolts from the same manufacturer should be used, and diamond drill bits or bottom hole drill bits should not be used.

Rack fixation is suitable for steel structures, installation racks, or KUKA linear slides provided by customers. The installation surface must be clean, the hole diagram must be correct, use 4 hexagonal bolts M8x35 and disc washers, and use cylindrical positioning pins and flat positioning pins to center. The bottom structure needs to be able to reliably withstand foundation loads and maximum loads, with a bolt tightening force of approximately Fs=62 kN, and tensile strength materials such as S355J2G3. After the robot is installed, four M8x35 hexagonal bolts should be tightened again with a torque wrench after 100 hours of operation.

Connect the cable to the customer interface

The connecting cables include motor cables X20-XM1/XM2-6, data cables X21-X15/X18, and optional grounding wires. The robot side connection cable is firmly connected to the cable kit. When fixed laying, the bending radius of motor cables should not be less than 50 mm, and data cables should not be less than 30 mm; cables should be protected from mechanical impact, not subjected to tension, and only laid indoors, with a fixed laying temperature range of -10 ° C to+70 ° C. Motor cables and data cables should be laid separately, and additional electromagnetic compatibility measures should be taken if necessary. The grounding wire is used to establish a low resistance connection between the robot system and the control box, and the electrical connection is performed by the user.

The A1 customer interface is located on the back of the base, including the AIR1 to AIR4 air pipeline interface, with an outer diameter of 4 mm, a maximum pressure of 7 bar, and a vacuum negative atmospheric pressure of 0.95 bar; Interface MEMD X32; Drag chain system interface X76. The A4 customer interface is located under the A5 cover plate on the wrist, and the X96 interface must use a right angle plug and point towards the cable tray direction. The drag chain system X76-X96 has a rated current of 2 A, a rated voltage of 24 V, an M12 plug, 8 pins, and A standard coding. It is necessary to prevent overload and short circuit.