This article focuses on the process of shaping the mixed rifle with a large spiral angle in the cannon, and proposes a cone-like cathode structure with asymmetric cuneiform working tooth.

The measurement principle and method of guiding-groove symmetrical degree, twining angle, inside radius, beeline degree for direction pipe are presented.

Based on in-depth analysis on characteristic and function principles of PSD, combined with characteristic of measured object, this article presents an new real-time measurement for symmetrical degree, guiding-groove, twining angle, inside radius of long direction pipe; completes designing work for hardware of function module and .

The effects of winding angle on the strength of fiber-winding composite pipe with ends under internal pressure(the ratio of hoop stress to axial stress is 2∶1) were investigated based on Hoffman failure criterion here.

The changes of the winding angles of composite materials and the temperature during curing process were considered.

Though analys of wound tube stress and test result, it is found that wound tubes with different winding angles have different mechanical performance.

Based on optimal design method in strength,the best wound angle was been determined,and a reinforcement of the vessel strength on circular and axial position was gained.