Abstract: This lesson is a design of all-powerful type low pressure break machine.Model number is a DW16-630.Passing the traditional handicraft calculation completes to break the road machine conducts electricity the system, putting out the room, owing the electric voltage take off to button up the machine, dividing take off to button up the machine, conducting electricity to flow to take off to button up the machine in a moment with over carry to grow to postpone the electric current takes off the design that button up the machine.Thesis inside to broke the road machine spare parts construction to make the detailed introduction with the function.At take off to button up the machine design consult some mature design, make selection first to design the parameter, then proceed the modification, and adjust the parameter, again school , adjust, get the good design project.Design to make use of the Pro/ the software of E in the process to break road machine parts of spare partses proceed the entity shape.On the choice in spare parts material, according to the latest of the same kind product, and as to it's proceed the earnest comparison, adopt the fit material.