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MEWAR UNIVERSITY
Topic => Laser Beam Machining
05/01/2023
What is a laser ?
The word LASER is an acronym which stands for Light Amplification by Stimulated Emission of Radiation. It actually represents the principle itself but is nowadays also used to describe the source of the laser beam.
The main components of a laser are the laser active, light amplifying medium and an optical resonator which usually consists of two mirrors.
Uses the light energy from a laser to remove material by vaporization and ablation
Laser Beam Machining (LBM)
The punch is a light beam
LBM Applications
Drilling, slitting, slotting, scribing, and marking operations
Drilling small diameter holes ‑ down to 0.025 mm (0.001 in)
Generally used on thin stock
Work materials: metals with high hardness and strength,
soft metals, ceramics, glass and glass epoxy, plastics,
rubber, cloth, and wood
Comparison: sheet and plate cutting
1. Plasma2. Laser3. Waterjet
Comparison: sheet and plate cutting
Main criteria for comparison:
1. Materials
2. Cost
3. Quality
4. Productivity
Comparison: sheet and plate cuttingProcesses Material Thickness Quality Cost NotePlasma All electrically
conductive materials
Gauge to 2 in Poor Low Need high power
Laser A variety of materials
¼ in and thinner
Middle Middle Problem with reflective materials
Waterjet A variety of materials, usually soft material
Highest High
Cost: decided by the speed.
General benefits to manufacture parts by cutting from sheets and plates:
Fast to manufacture Parts are low in cost Helps drive costs for assembled products down From low to high quantities Simple to complex parts Parts can later be formed (bent) to make more
complex shapes
THANK YOU..
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