Laser Micro Machining Solutions for Automotive

Why Automotive Parts Now Need Micron-Scale Features

Automotive engineering keeps moving into smaller dimensions. Fuel injector orifices of 100 to 200 µm shape the spray that sets combustion and emissions. Pressure, flow and thermal sensors carry features measured in micrometres. Electric vehicles add thin electrode foils, copper busbars, connector strips and motor laminations, all of which need clean cuts and slots without burrs or delamination.

Conventional drilling, milling and stamping reach their limits at these sizes. Tools break or wear quickly, burrs need extra finishing, and mechanical force distorts thin foils. Electrical discharge machining only works on conductive materials and is slow on small, high-volume features.

Laser Micro Machining with Ultrafast Pulses

Laser micro machining removes material with tightly focused laser pulses, drilling, cutting, scribing and texturing features down to a few micrometres. Nothing touches the part, so there is no tool wear and no force on delicate foils or thin walls.

With picosecond and femtosecond lasers, each pulse is so short that material is removed before heat can spread into the surrounding metal. This cold ablation gives sharp edges, clean hole walls and little or no recast layer, on hardened steel, copper, aluminium, ceramics, sapphire and polymers alike.

Why Pulse Duration Decides Edge Quality

At micro scale, the way energy reaches the part matters more than the amount of it. Three factors decide the result:

• Pulse duration: femtosecond and picosecond pulses, from under 300 fs to 10 ps, remove material with minimal heat, where nanosecond pulses leave melt and recast.
• Drilling strategy: percussion drilling is fastest for small holes, trepanning improves roundness and taper, and helical drilling gives the best wall quality and highest aspect ratio.
• Motion accuracy: linear axes with 1.5 µm positioning accuracy and rotary axes to 5 arcsec place every feature exactly, including angled spray holes.

Built for Powertrain, Sensor and EV Production

Different micro features call for different machine designs, from high-speed drilling to 5-axis turning.

Injector and valve orifices

The M-Solv high speed micro-drilling machine drills holes from 5 µm with fibre, green, UV or femtosecond sources from 10 to 100 W, at speeds up to 1000 mm/s, with auto-focus and vision alignment.

Battery foils and busbars

The GFH multi-axis platform cuts and patterns electrode foil without delamination, trims copper busbar and connector foil, and machines micro-slots in motor laminations.

Coatings and fine structures

Picosecond micro-ablation removes battery coatings and creates micro features down to 10 µm with ±5 µm position accuracy, for sensors, injector features and electronic modules.

Turning parts too small to clamp

The GFH GL.evo femtosecond laser turning machine shapes rotating parts with 1 µm positioning accuracy, for sensor elements, pins and micro-nozzles in ceramics and hardened steel.

Building a Complete Micro Machining Capability

For fuel injector orifices, brake valve micro-orifices and battery cooling channels, the High Speed Laser Micro-Drilling Machine drills with percussion, trepanning or helical strategies. EV electrode foil, busbars and motor lamination slots are cut on the Multi-Axis Picosecond/Femtosecond Micromachining Platform from GFH, with 3- to 5-axis motion. Coating removal and fine structuring are handled by the Picosecond Laser Micro-Ablation Machine. Small rotationally symmetric parts such as sensor pins and micro-nozzles are machined on the 5-Axis CNC Femtosecond Laser Turning Machine.

Who Uses It

• Fuel injection and powertrain component manufacturers
• Automotive sensor, MEMS and electronics module makers
• EV battery cell, pack and busbar manufacturers
• Electric motor and lamination producers
• Automotive R&D centres and research institutes working on micro manufacturing

Supply and Support in India

United Spectrum Instruments (USI), Chennai, is the distributor in India for GFH GmbH and M-Solv laser micro machining systems and supplies drilling, ablation, multi-axis and laser turning machines for automotive and EV production.

USI helps match the laser source, pulse duration and machine format to your parts, and provides installation and after-sales support.

Request a Configuration

Download the brochure from this page, use the Enquire Now button, write to sales@unitedspectrum.in, or call +91 93631 83748 / +91 97899 04948. Please mention:

• The parts and features: holes, slots, cuts, textures or turned profiles, with sizes and tolerances
• Materials and thickness, including coatings or multilayer foils
• Required edge or hole quality, taper and aspect ratio
• Expected volume, and whether the machine is for production or R&D