Buğra Cengiz 030060178

The Geneva Mechanism

The Geneva mechanism uses a continuously rotating driver to index the table through
a partial rotation.If the driven member has six slots for a sixstation dial indexing table. each turn of the driver results in 1/6 rotation of the worktable or 60°.The driver only causes motion of the table through a portion of its own rotation. For a six-slotted Geneva. 120 degree of driver rotation is used to index the table. The remaining 240 degree of driver rotation is dwell time for the table, during which the processing operation must be completed on the work unit.

Groover, Automation, Production Systems and CIM, P.571.

Zero Defect

Just in Time (JIT) requires high quality in every aspect of production. If defective parts are produccd.they cannot be used in subsequent processing or assembly stations, thus interrupting work at those stations and possibly stopping production. Such a severe penalty forces a discipline of very high quality levels (zero defects) in parts fabrication. Workers are
trained to inspect their own output to make sure it is right before it goes to the next operation. In effect.this means controlling quality during production rather than relying on in
specters to discover the defects later. The Japanese use the word Jidoka in their quality
control procedures. Roughly translated, it means "stop everything when something goes
wrong"

Groover, Automation, Production Systems and CIM, P.827

Last In First Out. (LIFO)

Last in first out method of inventory measurementassumes that the most recently purhaced items re to be the first ones sold that the remaining inventory will consist of the earliest item purchased. In other words, in which the are sold in reverse of order in which they are bought. Unlike FIFO and LIFO methods species that the cost of inventory on hand (ending inventory) is determined by working forward from the beginning inventory through purchases until suffiecient units are obained to cover the ending inventory. This is the opposite of FIFO system.

Joel J. Lerner, Theory and Problems of Princibles of Accounting I, P.194

Super Plastic Forming

Superplastic materials are thus multi-phase, which promotes pinning of
the grain boundaries during the high-temperature forming process, hence
inhibiting grain growth. Titanium and aluminium alloys have been developed
for industrial superplastic forming and it is also an accepted forming method
for producing the vanes of gas turbine engines using certain nickel-based
superalloys. With further refinement of grain size, superplasticity can be
extended to significantly higher (and hence commercially desirable) strain rates.

John Martin, Materials for engineering, P.55