Helicoil Taps!
the assembly instructions of the thread insert
----it consists of drilling tapping installation of thread insert and break-off tool ,mainly ,the four assembly instructions follows:
1drilling:
The taper is should be selected suitably from the dimension of do in the table and be sharpened accurately The chamfer is inappropriate to exceed the depth of 0.4p after tapping .the best chamfer is 120°which makes against setting of thread insert if it is too big.
2:tapping
The special screw tap corresponding to the thread insert is selected to use ( using lubricant oil or grease for this operation ) when the through hole is tapped ,the force should be appropriate to prevent taper rupturing .After tapping the tape hole should be clean .
3Installation of thread insert
Insert the tool in the dilled hole lower than the thread insert into the tapping pressure
4Break-off tool
Break the tail off using the break-off tool in order to use the whole length of the tapping.
