MAPAL has developed a new fine-boring system and a second-generation deep-hole drill for aluminium, extending its tooling range for precision automotive, aerospace, and general engineering production.
The EA Performance System introduces single-screw adjustment for fine-boring diameters between 10mm and 19mm. MAPAL intends the mechanism to reduce setting effort while retaining the accuracy required for demanding finishing operations.
A redesigned MEGA-Deep-Drill-Alu has also been developed for holes between 15 and 40 times tool diameter. The second-generation tool combines revised cutting geometry, an enhanced cooling arrangement, and a cutting material concept tailored to aluminium alloys.
Standard availability is planned from September 2026 in diameters from 3mm to 16mm, depending on length. User trials have recorded feeds of up to 0.4mm per revolution and total drilling distances reaching 3.2km, although achieved performance will vary with material, machine condition, coolant, and application.
Fine boring brings an existing hole to its final diameter, geometry, and surface finish. The operation is used for bearing locations, hydraulic bores, valve bodies, housings, engine components, transmission parts, and other features where position, roundness, and surface condition are as important as nominal size.
Adjustment must be sufficiently fine and repeatable for operators to compensate for tool wear and process variation without overshooting the target. A simpler mechanism can reduce setup time and dependence on specialist technique, although spindle condition, tool runout, workholding, temperature, and measurement continue to influence the result.
Deep-hole drilling presents a different problem because the cutting zone becomes increasingly remote from the spindle and operator. Coolant must reach the tool tip, chips must travel through a long confined path, and the drill must resist wandering as depth increases.
Aluminium can remain difficult despite its reputation as an easily machined material. Some alloys produce long, adhesive chips, while heat and poor lubrication can generate built-up edge on the cutting tool.
A blocked flute can damage the drill or scrap a component that has already undergone substantial machining. Cooling channel design and cutting geometry must therefore work together, with coolant removing heat and transporting chips while the cutting edge produces forms capable of passing through the available space.
Deep-hole process control is receiving wider attention across the machine tool sector. DMG Mori has developed adaptive drilling control that responds to changes in cutting behaviour, addressing hidden loads and chip evacuation problems where the tool tip cannot be observed directly.
Software is also taking a larger role in preparing difficult operations. Mastercam’s latest release expands multiaxis, drilling, simulation, and toolpath controls, allowing programmers to identify collisions and process weaknesses before work reaches the machine.
Tool development and adaptive software complement one another rather than serving as substitutes. A control system can reduce feed when load rises, but it cannot correct unsuitable cutting geometry, insufficient coolant pressure, excessive runout, or inadequate chip space.
Applications for the aluminium drill extend well beyond established engine components. Electric vehicle housings, battery structures, power electronics cooling plates, aerospace frames, pneumatic equipment, and industrial machinery all use aluminium where weight, thermal performance, corrosion resistance, or machinability is valuable.
Electrification is changing the component mix without removing precision machining. Combustion engine programmes may decline over time, while electric drivetrains introduce motor housings, inverter components, cooling channels, gearbox parts, and structural castings with their own bore and hole requirements.
Large cast aluminium components can carry substantial embedded value before final drilling begins. A tool failure or deviation late in the process wastes the casting, heat treatment, previous machining, inspection, energy, and production time already invested.
Tool life must therefore be considered alongside cutting speed. A faster process that varies unpredictably can create more downtime and scrap than a slightly slower operation with a stable replacement interval.
Reliable wear data supports planned tool changes during unattended production, while monitoring can distinguish gradual degradation from sudden failures caused by chip blockage or coolant loss. The usefulness of that data depends on consistent tooling, material, and machine conditions.
MAPAL will present both systems at AMB 2026, where machining suppliers are placing increasing emphasis on complete process solutions. Tool selection is becoming more closely connected to coolant delivery, digital setting, machine monitoring, automation, and application engineering.
The EA Performance System targets faster and more repeatable adjustment, while the MEGA-Deep-Drill-Alu addresses stability within a process that becomes harder to control with every additional diameter of depth. Their value will be established at the machine, where reduced setup and reliable chip evacuation must translate into fewer interventions and rejected components.
