Ensure perfect alignment for your secondary machining processes with our professional Hole Reference Positioning Mechanism drawing. In precision manufacturing, using a pre-drilled hole as a datum point is one of the most reliable ways to maintain part consistency across different workstations. This technical CAD resource provides a comprehensive blueprint for a specialized positioning tool designed to locate and secure workpieces based on their internal diameters. By downloading this file, you gain access to a proven mechanical design that eliminates “float” and ensures your workpiece is perfectly centered for subsequent drilling, milling, or inspection tasks.

The design featured in this package focuses on a high-accuracy expanding pin or tapered plug system. The drawing includes detailed views of the centering mandrel, the actuation linkage (manual or pneumatic), and the base plate interface. By utilizing this blueprint from MechStream, you can build a fixture that compensates for slight variations in hole diameter while still maintaining a rigid, repeatable centerline. This is an invaluable asset for automotive engine block processing, aerospace structural components, and any multi-stage manufacturing where hole-to-hole tolerances are tight.

Our technical documentation emphasizes repeatability and wear resistance. This assembly is designed with hardened and ground locating pins to prevent dimensional drift over thousands of cycles. The schematics also feature integrated air-blow ports to clear chips from the reference hole before seating, ensuring that no debris interferes with the positioning accuracy. Whether you are building a dedicated assembly jig or a CNC pallet fixture, this drawing provides the exact geometric tolerances and material specifications required for professional-grade part registration.

Características principales:

  • Self-Centering Mandrel Design: Utilizes a tapered or expanding mechanism to find the absolute center of a reference hole automatically.
  • Hardened Tool Steel Pins: Detailed specifications for wear-resistant contact surfaces to maintain micron-level accuracy over time.
  • Integrated Debris Clearance: Features air-purge channels to ensure the reference hole is clean before the positioning pin engages.
  • Pneumatic Actuation Ready: Includes standardized mounting for compact cylinders to automate the clamping and unclamping sequence.
  • High-Rigidity Base Interface: Engineered to prevent deflection, ensuring the verticality of the part remains true to the machine spindle.