Q - Ultrasonic to Hydrodynamic Flashcards
A term that refers to cutting methods that are unusual, uncommon, or specialized; generally anything apart from cutting with blades or bonded abrasives
NON-TRADITIONAL MACHINING
Why are abrasive cutting techniques considered NON-TRADITIONAL?
they use grit in its granular un-bonded form
A non-traditional abrasive cutting technique. A tool that doesn’t actually touch the workpiece vibrates up and down at high frequency. A slurry is recirculated past the tip of the tool.
ULTRASONIC MACHINING
A technique similar to “sandblasting”. Grit is introduced into a stream of compressed air then forced through a nozzle. The result is a highly concentrated tight beam of grit at 150-300 m/s.
ABRASIVE JET MACHINING
Uses “etching” which is the removal of material through a chemical reaction
CHEMICAL MACHINING
What chemically resistant material must the component surface be covered in to control the process, this protects it from the etchant
MASK/MASKANT
An approach that uses a photosensitive maskant or PHOTORESIST
PHOTOCHEMICAL MACHINING
The maskant is inevitably undercut by the etchant, making the method best suited to shallow indentations ________ _______.
CHEMICAL MILLING
The maskant is inevitably undercut by the etchant, making the method best suited to shallow indentations ________ ________.
CHEMICAL BLANKING
A process that uses the reverse of electroplating to remove metal from a workpiece that forms the anode in an electrochemical cell. No maskants are needed and no reagent.
ELECTROCHEMICAL MACHINING
What does EDM stand for?
ELECTRIC DISCHARGE MACHINING
What is another name for EDM?
SPARK EROSION
One type of EDM which is used to create holes of any cross-section.
PLUNGE EDM
4 types of PLUNGE EDM
- RAM
- SINKER
- CAVITY
- VOLUME
A fluid, such as oil or silicone that must be worked between tool and part.
DIELECTRIC (non-electrically conductive) fluid
A form of EDM involving a wire and pulley system
TRAVELING WIRE/WIRE EDM
A type of EDM similar to PLUNGE EDM except the tools are circular, small diameter, rotated during descent, and hollow to permit high pressure dielectric to be pumped down through the bore.
SMALL HOLE EDM/EDM DRILLING
What does EBM stand for?
ELECTRON BEAM MACHINING
A technique that employs a high energy stream of electrons to vaporize a workpiece upon impact, not used much anymore
ELECTRON BEAM MACHINING
Largely replaced EBM since it requires neither a vacuum nor heavy shielding.
LASER BEAM MACHINING (LBM)
2 main categories of LASER MACHINING
LASER CUTTING and LASER ETCHING (ENGRAVING)
Mainly performed on sheets of material, since cutting through thick plates can result in tapered slot walls as a consequence of the fanning-out effect of the gas stream. The gas used is Oxygen, which raises the temp.
LASER CUTTING
Cutting process that doesn’t produce a very smooth cutting surface and also leaves a “Heat Affected Zone” which can degrade material properties.
LASER CUTTING
The cutting process used to remove material from the surface of a workpiece, and can be performed with or without an inert gas
LASER ETCHING
When combined with _____-____ ___ positioning, LASER MACHINING can be performed on 3D surfaces
MULTI-AXIS CNC
A lower-cost alternative to laser when it is required to cut right through the metal plate. The metal must be electrically conductive
PLASMA CUTTING
Modern development to PLASMA CUTTING which employs a torch on the end of a robotic-style arm with multiple degrees of freedom
CNC 3D PLASMA CUTTING
What is another word for HYDRODYNAMIC MACHINING?
WATER JET CUTTING
Uses a very high-pressure jet of water directed through a fine nozzle.
WATER JET CUTTING/ HYDRODYNAMIC MACHINING
Abrasive grit is introduced into the water stream to cut hard materials, especially thick plates.
ABRASIVE WATER JET CUTTING
What was used to revolutionize the process of ABRASIVE WATER JET CUTTING granite countertops?
3D MULTI-AXIS CNC control
