Study Of The Flexible Fixture Technologies And Innovative Design

The primary character of modern mechanical manufacturing is assortments, little bath and short period. This kind of production way results in the generation of flexible fixture and its development. But the depth and width researched now can't adapt to the needs of production domain. The main behave are that we haven't constructed the logic sort system of flexible fixture, haven't taken much importance to the special type flexible fixture which using non-mechanical clamping, and depend on the combination fixture excessively whose cost is high and taken much time to adjust. So we need to research flexible fixture systemically and design different kinds of new flexible fixture which response quickly, adjust expediently, manufacture easily, cost lowly. This can accelerate the development of flexible fixture.The main contents of this thesis are as follows:(1) The logic sort system of flexible fixture is built. This system can help us to know the technology of flexible fixture roundly and provide theory basis to choose them scientifically.(2) The flexible fixture using eccentric-cams as locators is researched. Several kinds of flexible fixtures using eccentric-cams are designed, and the location error calculation formulas which can be used to guide engineering design are given too.(3) Flexible fixtures using adjustable pressure plate, impulse force and screw are researched on a certain extent. The mechanical modeling and calculating formulae are also given.(4) The special type flexible fixture using non-mechanical clamping is summarized systemically, and the characteristics of the flexible fixture based on liquid-solid are concluded. The refrigeration technologies of ice clamping fixture which has good prospect are introduced. The operation principles and technical practicability among semiconductor refrigeration, electro-chemical refrigeration and vortex refrigeration are compared.(5) The actuality and trend of flexible fixture are summarized in this thesis, and the further research on the technologies of flexible fixture is analyzed too.