Heule Holemaking Tool Enhances Precision on Uneven Surfaces

Heule Precision Tools’ Comp V3 tool is engineered to perform multiple drilling or countersinking operations on uneven surfaces with precision, without marking the workpiece. According to the company, it improves productivity by eliminating the inconsistency associated with manual countersinking and saves significant cycle time. A specialzied, non-rotational contact foot prevents any marking of the workpiece during operation, making it well suited for critical finishes.

The Comp V3 offers fine adjustments to the chamfer depth of 0.0008" (0.02 mm) and a drill depth of up to 2 × D with through-coolant capabilities. It produces clean, precise countersinks in a variety of materials including aluminum, titanium and composites, making it well suited for critical aircraft components like seat rails, floorboards, structural components, aluminum wheels and high-value aluminum castings. It features double compensation technology for precision and finer adjustments; the contact ring compresses as the hole is drilled, and then the contact ring holder compresses after the predetermined countersink depth is reached. This technology enables a variant of part of ±3.75 mm with height increments of +0.02 mm, making it well suited for aerospace applications and others where critical finishes are required.

The Comp V3 tooling includes an adjustment ring, a contact ring holder, a contact ring and the solid carbide step drill. In the first step, the tool head makes contact with the workpiece. As the solid carbide step drill makes the hole, the contact ring moves up. The drill continues working until the preset countersink depth is reached. When the countersink reaches maximum depth, the contact ring holder and contact ring move up together as the drill stays stationary. The drill is then removed, leaving a finished part.

The Comp V3 is spring-loaded and designed to cut a specific countersink size. Once the specific size chamfer is produced, the face of the tool stops rotation while making contact with the part, and the cutter cannot travel further into the part. Using a highly efficient threaded system for quick changes between drill and countersink operations streamlines the workflow. Each Comp V3 tool is tailored to customer specifications to provide easy integration into existing systems.