| The bulldozer of SD13 at heavy carry the bottom work, circulating the speed low, so spread to move eventually the system spread the motive big, the gross decelerates the ratio big, spread the mold that move the wheel gear the number big, the physical volume is big, but make the craft simple, the cost is low, matching the Chinese state of the nation. This article introduces the CAD/CAE technology on the design of the final transmission gear of bulldozer, the main production of Shandong Bulldozer Corperation—SD13, in view of the insufficiency on the existing design method.By using Pro/E software, an actual parametric model of cylindrical gears constructed. The model can be easily changed in terms of gear geometric parameters. This guarantees the involute profile of the gear, and can changes its size and the shape according some essential parameters which is inputed.Immediately after, studied to base on the Pro/E to spread to move the wheel gear eventually the excellent turning design the system of CAD to develop two times. This system is a Pro/E to base on the Pro/E conduct and actions prop up the terrace, with Pro/ TOOLKIT conduct and actions core technique development/ the application system mold a dependable for, at the premise that insure the wheel gear strength request, press in pursuit of target in minimum physical volume, establishment eventually final transmission gear is optimize design. That system gives to design the personnel provides a good person with the machine to exchange the interface, realizes design and paint the operate system that integral whole turn.Moreover, this text returns to spread eventually the conjecture that move the system the assemble proceeded the simple introduction. Pass the conjecture assemble technique, can shorten product development time, benefit to the quantity of the product of exaltation with the dependable, benefit to lower the product cost, increase the competition ability of the business enterprise.
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