Tapping is most common word for industrial use. Tapping is crucial parameter of production line system. The tap is used for the tapping. Tapping means make a thread in to the hole.
Generally small to medium size of tap available in market. For any special size or any higher size according to the pitch of threading thread mill to be used.
For the tapping, you have to knowledge about pitch and TPI. So, the new word is pitch and TPI ...Now, What is pitch?, The pitch defined as the center distance between two nearby thread,
Now, What is TPI?, TPI means thread per inches. In the picture below you will understand exactly.
From shown into the fig the total length of thread is 25.4mm and pitch is 1.5mm, So the total thread per inch
25.4 / 1.5 = 16.93 ≈ 17 TPI
Now, tapping cycle based on the pitch, without breaking a tap tapping needs relation between RPM, given feed and Tap pitch. Here the relation of
Feed = RPM x Pitch
If your pitch is 1.5mm and RPM is 30 than feed must be 45 mm/min, if you change the feed without consideration of pitch and RPM, The tap gets broken. The format of tapping cycle like a drill cycle, just G83 replaced by G84.
For the tapping make hole first, According to the thread, there are many standards available. It gets differ by its standard, here are some data of standard for general use.
G98 G84 X....Y....R....Z....Q....F....
Example of Tapping M10 x 1.5 Tap
N100 G0 G91 G28 Z0
N102 G0 G90 G54 X15 Y25 M03 S30
N104 Z50
N106 G98 G84 X15 Y25 R5 Z-10 Q3 F45
N108 X50 Y40
N110 X60 Y20
N112 G80
N114 G0 G91 G28 Z0
N116 M05
N118 M30
Rigid tapping does not need a Peck its go throughout to the hole without pecking. Its depends on material types of TAP and workpiece.
This program has no need to simulation. Its simulation like drill program. You can view here
Thank you
