Aim On account of contribution of cutting force

gravitational force and pressure of center

the long and thin axle

which is laterally laid up

is easy to bend even to lose steadiness. It is necessary to solve the question when it is turned. Methods The reverse feeding turning is used

and a series of effective measures are taken

such as selecting optimum tool parameter and cutting allowance

using a stretching apparatus and an axle sleeve follow rest. Results The rigidity of long and thin axle is improved

and the turning requirement is satisfied.Conclusion The method is easy to use and has high working precision and has something worthy to be recommended.