| Job Title |
Jewel-hole Driller |
| Job Description |
Operates Battery Of Horizontal, Multispindle, Drilling
Machines To Drill Center Holes In Round Jewel Bearing Blanks:
Puts Molten Shellac On End Of Work Spindle And Centers Jewel On
Spindles, Using Small, Hand Centering Tool. Fits Drill Bits In
Soft Shellac In Drill Head. Trues Up (aligns) Bit By Holding Bit
Lightly With Tweezers To Detect Any Play Indicative Of Poor
Alignment; Straightens Bit By Moving Its Tip Slightly To
Eliminate Play. Inserts Work Spindle, Applies Diamond Dust With
Wire To Drilling Point, And Removes Jewel When Spindle Spring
Opens And Thus Indicates Hole Is Drilled. Inspects Holes For
Size By Manually Turning Them On Standard Bit Used As Gauge.
|
|
