Design And Implementation Of Control System For Nc Deep Hole Screw Broaching

Deep hole spiral groove is in length to diameter ratio greater than 30 more than the inner wall of the circular pipe in accordance with the specific curve equation and the section line processing out of the slot line and typical parts have rifling, wall thick PDM, spiral spline. Rifling process since Needless to say, belongs to must guarantee the products, and with improvement of the artillery, rifling processing is more and more difficult, trial production is becoming more and more quickly, operator dependence is more and more higher, compared with rifling. Wall thick PDM precision reduced, but its cross section and the unilateral cut depth close to 20 mm, guide angle is larger, processing equipment and control system also put forward new requirements. Regardless of the gun barrel rifling or wall thick PDM inner spiral surface, advanced processing equipment to ensure, with NC level promotion by the advantages of digital control equipment for processing such products becomes more and more obvious, conform to the direction of China’s future intelligent manufacturing development, effectively enhance China deep hole spiral pull cutting processing level.This paper firstly, combined with typical parts such as fire barrel tube rifling and wall thick PDM described the characteristic of the structure characteristics of the deep hole spiral curved surface, and uses it to analyze the currently used processing methods, such as drilling boring, electrolysis, hot rolling and broaching, and their respective advantages and disadvantages, so as to put forward in this paper has been successfully in the gun barrel rifling processing application of broaching method advantage. On the basis of this, the design of the control system of the NC deep hole is carried out with the structural features and functional requirements, and the design of the hardware and software is carried out. Compared with the use of general systems and data acquisition method, the project developed control system is strong, but it is effective to solve the problem of the use of general systems programming difficulties, data opening, and inconvenience of operation personnel.At the same time, the prototype is developed, and the wall thickness of helical broaching processing stator test, can see the equipment operation is good, the precision of processed samples meet the design requirements, demonstrated the effectiveness of the function of the control system is complete, with the engineering foundation, further to a variety of deep hole spiral machining features in the field of promotion。...