Executing flawless internal profiles, cross-holes, and deep-axis drilling for high-performance automotive parts. Utilizing specialized equipment to deliver exacting concentricity and superior surface finishes.
While our Traub automatic lathes perfectly shape the outer geometry of your automotive parts, true functionality often relies on complex internal structures. Fuel systems, transmission shafts, and hydraulic pins require internal bores that are perfectly straight, burr-free, and dimensionally exact.
At Annectotech LLP, our dedicated secondary drilling division operates advanced pillar drills, radial drills, and customized multi-spindle setups. We guarantee strict concentricity and precise Ra surface friction values for every drilled component.
Explore All Secondary OperationsStandard operational tolerances for automotive drilling.
We deploy specialized tooling setups and custom jigs to execute highly complex internal profiles required by Tier-1 OEM engine and chassis designs.
Drilling perfectly straight, deep internal bores along the central axis of the turned part. Crucial for manufacturing hollow spacers, fluid transmission shafts, and lightweight EV components. We utilize advanced coolant-fed carbide drills to prevent tool deflection and ensure core accuracy.
Intersecting the main axis with perpendicular drill paths. This is essential for hydraulic pins, fuel injectors, and cotter pin holes. Our engineering team designs custom fixtures for every batch to guarantee the cross-hole intersects the absolute dead-center of the component.
Executing multi-diameter bores in a single plunge. We manufacture specialized step-drills in-house to create perfect seating for countersunk screws, bearings, and O-rings, drastically reducing machine time while ensuring perfect concentricity between the steps.
When standard drilling cannot achieve the required surface friction or ultra-tight dimensional tolerance, we follow up with high-precision reamers. This ensures the internal wall is polished to an exact Ra value, critical for parts involving internal moving pistons or press-fit bearings.
High-volume drilling is only as accurate as the fixture holding the part. We design and fabricate our own tooling setups to ensure zero variance across massive production runs.
Our engineering team designs 3D CAD models of the holding fixtures before any metal is cut.
Utilizing pneumatic and mechanical toggle clamps to ensure the turned part never shifts during the drilling plunge.
All jigs feature hardened steel guide bushes to prevent tool wander and maintain perfect entry angles.
Fixtures are optimized for ergonomics, allowing operators to load and unload parts in seconds, increasing daily yield.
Verifying an internal bore is significantly more complex than measuring an outer diameter. We employ strict shop-floor metrology to ensure your internal specifications are met flawlessly.
Trust Annectotech LLP with your high-precision Traub turning and complex drilling requirements.
