Chap 24-26 Flashcards
Machining process that uses a toothed tool to remove material; use of a long multiple-tooth cutter to machine internal and external surfaces such as holes of circular, square, or irregular section
broaching
The use of a blade with many small teeth to cut a workpiece into two or more pieces
sawing
Small-scale removal of unwanted material (e.g. burrs) from a surface, corner, edge, or hole that is often done by hand; tools are made of hardened steels
filing
Examples for conventional abrasives
alumina and silicon carbide
Examples for super abrasives
cubic boron nitride and diamond
Removal of small amounts of material from a workpiece surface by microchipping and erosion; the workpiece and tool are immersed in a water slurry containing fine abrasive grains and the tip of the tool vibrates up and down with a frequency of 20 kHz and amplitude of 0.01 to 0.07 mm; the vibration gives a very high velocity to the abrasive grains between the tool and workpiece, allowing the grains to remove material from the workpiece; it is best suited for materials that are hard and brittle
ultrasonic machining
Finishing process in which a coated abrasive is formed into a belt or loop and attached to powered wheels that continuously rotate the loop against a stationary workpiece, allowing for “automatic” removal of material from a workpiece without repetitive manual effort
belt grinding
Manufacturing operation used to improve the surface finish of holes produced by processes such as boring, drilling, and internal grinding
honing
Machining process in which two surfaces are rubbed together with an abrasive between them, used to-improve the finish of flat; cylindrical, or curved surfaces
lapping
Important finishing process for the electronic industry in which a polishing pad+table and a suspension of abrasive particles in a water-based solution are used to remove material from the workpiece through combined corrosion and abrasion
chemical-mechanical polishing
