Precision-machined holes for alignment dowels in robotic end-effector mounting plates
Alignment dowel holes are precision-machined cylindrical features in end-effector mounting plates designed to accommodate hardened steel dowel pins. These holes provide exact positional reference and rotational orientation for mating components, ensuring repeatable alignment within micron-level tolerances during robotic tool change operations. The holes are typically arranged in specific geometric patterns (such as diamond or rectangular configurations) to prevent incorrect assembly and maintain coaxial alignment under dynamic loading conditions.
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Alignment dowel holes provide precise positional and rotational reference for mating components, ensuring repeatable tool alignment during robotic tool change operations with micron-level accuracy.
Common materials include carbon steel (AISI 1045, 4140), stainless steel (304, 316), and aluminum alloys (6061-T6, 7075-T6), selected based on strength, corrosion resistance, and weight requirements.
Alignment dowel holes typically follow ISO 2768-mK for general tolerances, DIN 7172 for geometrical tolerances, and ISO 286-2 for hole tolerance classes, with common fits being H7/g6 for precision applications.
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