Now we give the way how to solve the problem.

Taps broken correct choice of the thread the diameter of the apparatus; Blade Angle or choose burrs spiral groove taps; The depth of the drilling apparatus to meet the prescribed standard; Reduced cutting speed, selected according to the standard; Thread tapping correction taps and apparatus, and ensure that the coaxial tolerance of meet the requirements and choose floating chuck attack thread; Increase the taps, shorten the cone Angle before cutting length; Keep the hardness accords with a requirement, choose insurance chuck; The county taps wear should change in time.
Cone collapse reduce taps the anterior horn; Increasing the length of the cutting cone; Reduce hardness and change in time taps.
Taps wear too quickly reduced cutting speed; Reduce the taps, lengthen cone Angle before cutting the length; Choose good lubricity cutting fluids; For special proper heat treatment; Burrs taps correctly.
Threads diameter of reasonable selection of excessive precision grades in taps diameter; Choose appropriate cutting fluids and reduced cutting speed; Tapping thread and thread of calibration taps apparatus, the coaxial tolerance of floating chuck; Reduce before cutting Angle and the cone Angle after; Remove from the burrs taps burr and appropriately increase cutting cone length.
Threads diameter small choose appropriate precision grades in the taps diameter; The proper enlargement before cutting Angle and taps cone Angle; Replace worn big taps; Choose good lubricity cutting fluid.
Threaded surface roughness value appropriately enlarging the taps too before cutting Angle, reduce cone Angle; Proper heat treatment, improve the hardness, ensure taps sword lower face before the surface roughness of the value selection lubricity good cutting fluids; Reduced cutting speed; Change has worn taps.