Fundamentals........................................................................................................................................ 94

Overview................................................................................................................................................. 94

4.2

TAPPING with a floating tap holder (Cycle 206, DIN/ISO: G206).....................................................95

Cycle run................................................................................................................................................. 95

Please note while programming:............................................................................................................ 95

Cycle parameters.................................................................................................................................... 96

4.3

RIGID TAPPING without a floating tap holder (Cycle 207, DIN/ISO: G207)..................................... 97

Cycle run................................................................................................................................................. 97

Please note while programming:............................................................................................................ 98

Cycle parameters.................................................................................................................................... 99

Retracting after a program interruption.................................................................................................. 99

4.4

TAPPING WITH CHIP BREAKING (Cycle 209, DIN/ISO: G209)........................................................ 100

Cycle run............................................................................................................................................... 100

Please note while programming:.......................................................................................................... 101

Cycle parameters.................................................................................................................................. 102

4.5

Fundamentals of Thread Milling....................................................................................................... 104

Prerequisites..........................................................................................................................................104

4.6

THREAD MILLING (Cycle 262, DIN/ISO: G262).................................................................................106

Cycle run............................................................................................................................................... 106

Please note while programming:.......................................................................................................... 107

Cycle parameters.................................................................................................................................. 108

4.7

THREAD MILLING/COUNTERSINKING (Cycle 263, DIN/ISO: G263)...............................................110

Cycle run............................................................................................................................................... 110

Please note while programming:.......................................................................................................... 111

Cycle parameters.................................................................................................................................. 112

4.8

THREAD DRILLING/MILLING (Cycle 264, DIN/ISO: G264).............................................................. 114

Cycle run............................................................................................................................................... 114

Please note while programming:.......................................................................................................... 115

Cycle parameters.................................................................................................................................. 116

HEIDENHAIN | TNC 320 | User's manual for cycle programming | 9/2016

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