Micro Machining mechanical, Slides of Advanced Machining Processes

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Submitted By: Vempati premchand

Seminar On Micromachining

Introduction What is Micromachining? Important aspects Why Micro Machining? Classification According to Machining phenomena Laser micro machining Laser Micromachining Process Conceptual Solid Model of Laser Micromachining Setup Advantages of Laser Micromachining Conclusion

ContentContent

Micromachining is the basic technology for fabrication of micro-components of size in the range of 1 to 500 micrometers. Their need arises from miniaturization of various devices in science and engineering, calling for ultra- precision manufacturing and micro-fabrication.

What is Micromachining?What is Micromachining?

Unit removal

Equipment precision

Important aspectsImportant aspects

Removal by mechanical force Removal by ablation Removal by dissolution Plastic deformation

Classification According to Machining phenomena

Classification According to Machining phenomena

Classification According to Machining phenomena

Uses a power source (FS laser,

Excimer laser) that emits a beam

with very high quantum energy.

Laser micro machiningLaser micro machining

Conceptual Solid Model of Laser Micromachining Setup

Conceptual Solid Model of Laser Micromachining Setup

Conceptual Solid Model of Laser Micromachining Setup

Non-contact machining Very high resolution, repeatability and aspect ratios Localized heating, minimal redeposition No pre/post processing of material Wide range of materials: fragile, ultra-thin and highly reflective surfaces Process can be fully automated

Advantages of Laser MicromachiningAdvantages of Laser Micromachining

Ultrashort Pulses vs. Long Pulse Micromachining

Ultrashort Pulses vs. Long Pulse Micromachining

Ultrashort Pulses vs. Long Pulse Micromachining

FemtosecondFemtosecondFemtosecondFemtosecond LaserLaserLaserLaser MicromachiningMicromachiningMicromachiningMicromachining

Holes Drilled in 25μm Thick Brass FoilHoles Drilled in 25μm Thick Brass Foil

Ablation Rate vs. Energy Density in 18m Thick Aluminum Foil

Ablation Rate vs. Energy Density in 18m Thick Aluminum Foil

Ablation Rate vs. Energy Density in 18m Thick Aluminum Foil

Ablation Rate vs. Energy Density in 18m Thick Aluminum Foil

Ablation Rate vs. Energy Density in 18m Thick Aluminum Foil

Automation of Laser Micromachining Process

Automation of Laser Micromachining Process

Automation of Laser Micromachining Process

Micro milling Micro grinding Chemical etching Micro punching Manufacturing of injection nozzles, Micro surgical tools, VLSI circuits

Application of micromachiningApplication of micromachining