| Job Title |
Diamond Driller |
| Job Description |
Drills Minute Channels In Industrial Diamonds For Use In
Wire-drawing Dies, Using Drill, Lathe, And Handtools: Positions
Diamond In Chuck Of Lathe Equipped With Diamond-charged Wire
(drilling Point) Or Forms Wax Cup Around Diamond By Hand, Fills
Cup With Diamond Dust Mixture, And Inserts Steel Needle Into
Lathe To Act As Drilling Tool. Regulates Speed Of Revolutions
And Reciprocating Action Of Drilling Mechanism. Advances Cutting
Point Of Drill According To Specifications Covering Depth And
Contour Of Channel, Working To Tolerance Of 0.0001 Inch.
Examines Depth And Shape Of Channel With Microscope And Regrinds
Point Of Drill. Drills Backout (hole Drilled From Opposite Side
Of Stone To Meet Channel) To Prevent Chipping Surface Of Stone.
Laps Inner Wall Of Channel By Means Of Machine That Revolves
Stone As Rotating Wire Or Needle Rocks Back And Forth In
Channel, Working To Hole Diameter Tolerance Of 0.0000018 Inch.
Tests Accuracy Of Die Hole By Pulling Specified Length Of Wire
Through Die And Measuring Its Resistance In Wheatstone Bridge
Having Readings Translated Into Wire Diameter Or By Taking A
Series Of Readings Along Length Of Wire With Electronic
Micrometer. Secures Stone In Metal Mounting, Using Molten
Solder. May Drill Cavity (spot) In Face Of Stone To Hold Diamond
Dust Mixture, By Pressing Pointed End Of Diamond Chip Against
Revolving Stone, Using Pliers. May Be Designated According To
Operation Performed As Finisher, Fine-diamond Dies (machine
Tools).
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