Abstract
This paper describes the car-fixture Group technology development status and trends, combined with the current design of the fixture on the housings and valve seat car Kongcheng group fixture of the principle of factors affect the accuracy of processing and reduce error method, Fixture for the accuracy of the manufacturing process, analyzed the domestic and overseas manufacturing technology developed into a group of the status and development trend, a simple hole fixture on the car and composition of the working principle, to group technology as the core idea, according to shape the structure and function , And other parts of the product classification, and then similar shape, size similar to the processing elements and installation of the same components singled out to form the group needed to process groups, according to the group of co-ordination to consider the design of a fixture fixture structural design, Finally, designed by the group fixture positioning error analysis. Finally, the fixture three-dimensional engineering drawings and structural plans. The design of the fixture design and technology group engaged in the exploration for the next group fixture laid the foundation for the design, and can learn from the experience.
Keywords: Car-positioning technology group fixture
