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2-1. Overview......................................................................................................................... 90
2-2. Programming .................................................................................................................. 90
2-3. Operations ...................................................................................................................... 92
SECTION 7 FIXED CYCLES .....................................................................................96
1. Fixed Cycle Functions ........................................................................................................... 96
2. Fixed Thread Cutting Cycles ................................................................................................. 97
2-1. Fixed Thread Cutting Cycle: Longitudinal (G31, G33).................................................... 97
2-2. Fixed Thread Cutting Cycle: End Face (G32) ................................................................ 99
3. Non-Fixed Thread Cutting Cycle (G34, G35) ...................................................................... 102
4. Precautions when Programming Thread Cutting Cycles ..................................................... 103
5. Thread Cutting Compound Cycle (G71/G72) ...................................................................... 109
5-1. Longitudinal Thread Cutting Cycle (G71) ..................................................................... 109
5-2. Program Example for Longitudinal Thread Cutting Compound Fixed Cycle
(G71) ............................................................................................................................ 110
5-3. Transverse Thread Cutting Compound Fixed Cycle (G72) .......................................... 111
5-4. M Code Specifying Thread Cutting Mode and Infeed Pattern ...................................... 112
5-5. Multi-thread Thread Cutting Function in Compound Fixed Thread Cutting Cy-
cle ................................................................................................................................. 125
6. Grooving/Drilling Compound Fixed Cycle............................................................................ 126
6-1. Longitudinal Grooving Fixed Cycle (G73)..................................................................... 126
6-2. Example Program for Longitudinal Grooving Compound Fixed Cycle (G73) ............... 127
6-3. Transverse Grooving/Drilling Fixed Cycle (G74) .......................................................... 128
6-4. Example Program for Transverse Grooving/Drilling Fixed Cycle (G74) ....................... 129
6-5. Axis Movements in Grooving/Drilling Compound Fixed Cycle...................................... 129
7. Tapping Compound Fixed Cycle ......................................................................................... 130
7-1. Right-hand Tapping Cycle (G77) .................................................................................. 130
7-2. Left-hand Tapping Cycle (G78) .................................................................................... 131
8. Compound Fixed Cycles...................................................................................................... 132
8-1. List of Compound Fixed Cycle Commands .................................................................. 132
8-2. Basic Axis Motions ....................................................................................................... 133
8-3. Address Characters ...................................................................................................... 139
8-4. M Codes ....................................................................................................................... 139
8-5. Drilling Cycle (G181) .................................................................................................... 140
8-6. Boring Cycle (G182) ..................................................................................................... 141
8-7. Deep Hole Drilling Cycle (G183) .................................................................................. 142
8-8. Tapping Cycle (G184) .................................................................................................. 144
8-9. Longitudinal Thread Cutting Cycle (G185) ................................................................... 145
8-10.Transverse Thread Cutting Cycle (G186).................................................................... 146
8-11.Longitudinal Straight Thread Cutting (G187)............................................................... 147
8-12.Transverse Straight Thread Cutting (G188) ................................................................ 148
8-13.Reaming/Boring Cycle (G189)..................................................................................... 149
8-14.Key Way Cutting (G190).............................................................................................. 150
8-15.Synchronized Tapping Cycle....................................................................................... 153
5238-E P-(iii)
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