The Appliccation Of Arc Worm And Helical Gears In Car Door

Worm drive is a simple power drive.The driving have been massive used in the national defense, the metallurgy, the shipbuilding, the building, the chemical industry by having big velocity ratio, high bearing capacity, small impact load, transmission is steady, easy to realize self-locking and so on.But the relative sliding speed is big, the rubbing factor is high, the lubrication effect is not good, the calorific capacity is big, therefore,causing the transmission efficiency to be low.Meanwhile ,the worm gear to be maked have to need the worm gear hob either (is named single tool or multi-knives with the specially made cutting tool milling flies truncates), the former processing cost is high, the latter processing efficiency precision is low.If with the helical gear substitite for the worm gear in worm drive, may display the merit of column helical gear convenient ,quick and higher efficiency to be processed..utilized in the project may enhance the production efficiency effectively and reduce the production cost.Researching on the basis of worm and helical gear drive the arc worm and helical gear drive will be studied in the topic.In order to has a preliminary understanding to the circular arc worm and the helical gear transmission.The theoretical analysis and applied research in the automobile door lock of arc worm and helical gear drive be studied is duty of topic.In the aspect of theoretical analysis, the meshing principle of arc worm and the helical gear transmission be elaborated and the tooth face equation be established.In the aspect of application in automobile door lock, circular arc worm tooth profile parameters are measured by using the three coordinates measuring instrument and tooth face parametric equation and the worm gear worm meshing equation will be established according to our country standard.The helical gear parameters are designed and examed.using the modern three dimensional software to the circular arc worm and helical gear carried on Modeling and simulation,the result of simulation had indicated the parameters design of circular arc worm and helical gear transmission was reasonable,proving it to be feasible used in the automobile door lock.