Fundamental investigation on Laser-Micro EDM based micromachining technology
Abstract
Micromachining is a promising technology for the production of miniaturized parts. Lasermicromachining is widely used for this purpose. Laser micromachining has advantages because ofits higher material removal rate (MRR). However, its main disadvantage is the poor machiningquality due to the heat affected zone (HAZ). On the other hand, micro-electro-discharge machining(microEDM) can fabricate better quality micro features due to the absence of the dominant HAZzone. Though, this enhancement comes at the cost of very low MRR. To overcome the problemassociated with these two types of machining, a hybrid technique is required to integrate theadvantages of LASER micromachining and microEDM. In the hybrid process a rough machiningis carried out first by LASER followed by a fine operation using microEDM. Thoroughfundamental investigation of 3-D micromachining based on Laser and microEDM has not beencarried out yet. Therefore, this research targets to investigate LASER-microEDM based combinedmicromachining technique. Existing microEDM machine will be retrofitted by integrating amodular fiber laser head. A mathematical model will be developed from basic heat conductionmodel to predict how the proposed hybrid processing technique will affect feature profile, MRRand HAZ. Further experimental validation and optimization of the process parameters will becarried out to achieve best machining performance. The successful completion of this project willprovide comprehensive knowledge about LASER-micorEDM based hybrid operation. Thisknowledge can be used for fabricating miniature parts for aerospace industry (such as micro holesfor turbine blade cooling), automotive industry (micro holes for fuel nozzle), healthcare sector(micro-features for a cardiac stent), and electronic industry (interconnectors for circuits), etc. Infuture, the expertise developed from this project can be employed for developing newmanufacturing machine...
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 19, 2018
- Source ID
- FA23861814037
Entities
People
- Tanveer Saleh
Organizations
- Air Force Office of Scientific Research
- International Islamic University Malaysia
- United States Air Force