Tag Archives: drill


(Sub Program: This is for Educational Purposes only.)


(PROGRAMMMER: ______ ___)
(THURSDAY, NOV __ /09)

N10 G17 G20 G40 G49 G80 G90 G98
N20 G28 G91 Z0
N30 G28 X0 Y0

N40 T13 M6 (#3 C’DRILL)
N50 G0 G54 G90 X1.2 Y1. S5454 M3 (#01)
N60 G43 Z2. H13 M8
N70 G99 G81 Z-.21 R.1 F4.8
N80 M98 P5000
N90 G28 G49 G91 Z0 M5
N100 M1

N110 T14 M6 (5/16″ DRILL)
N120 G0 G54 G90 X1.2 Y1. S1920 M3 (#01)
N130 G43 Z2. H14 M8
N140 G99 G83 Z-.8188 R.1 Q.15 F9.6
N150 M98 P5000
N160 G28 G49 G91 Z0 M5
N170 M1

N180 T18 M6 (1/2X82″ C’SINK)
N190 G0 G54 G90 X1.2 Y1. S354 M3 (#01)
N200 G43 Z2. H18 M8
N210 G99 G82 Z-.2291 R.1 P.508 F1.9
N220 M98 P5000

N230 G28 G49 G91 Z0 M5
N240 M1

N250 T20 M6 (3/8-16″ TAP)
N260 G0 G54 G90 X1.2 Y1. S373 M3 (#01)
N270 G43 Z2. H20 M8
N280 G99 G83 Z-.875 R.3 F23.3125
N290 M98 P5000
N300 G28 G49 G91 Z0 M5
N310 G28 X0 Y0
N320 M30

N340 X1.7 (#02)
N350 X1.2 Y1.5 (#03)
N360 X.7 Y1. (#04)
N370 X1.2 Y.5 (#05)
N380 X2.55 Y1.5 (#06)
N390 X3.05 (#07)
N400 X2.55 Y2. (#08)
N410 X2.05 Y1.5 (#09)
N420 X2.55 Y1. (#10)
N430 X4. Y1.25 (#11)
N440 X4.5 (#12)
N450 X4. Y1.75 (#13)
N460 X3.5 Y1.25 (#14)
N470 X4. Y.75 (#15)
N480 G0 G80 Z2. M9
N490 M99

Disclaimer, not 100% sure this is right, use at your own risk. the author, school, staff, students, do not take any responsibility for your actions with what is found here.

This is for Educational Purposes only.

Lathe: Tailstock

  1. The tailstock supports long work that would otherwise sag or flex too much to allow for accurate machining. Without a tailstock, long pieces cannot be turned straight and will invariably have a taper. Some tailstocks can be intentionally misaligned to accurately cut a taper if needed. The tailstock has a centering device pressed into a shallow, specially ed hole in the end of the work piece.
  2. The center can be either “live” or “dead.” Live centers have a bearing, allowing the center to rotate along with the work piece. Dead centers do not rotate and must be lubricated to prevent overheating due to with the work piece. Instead of a center, a drill can be mounted in the tailstock.
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