某型专用夹具的设计与制作

A Certain Type of Design and Production of Special Fixtures

首先需要对工件的定位基准进行确定,然后选择定位元件及工件的夹紧。在对工件夹紧的选择上,本文用了两种不同的夹紧方法,即:粗铣下平面用的是螺钉压板夹紧机构;粗铣前后端面时用的是气动夹紧机构。两种方法在生产中都有各自的优点和不足,但都广泛运用在生产中。然后计算铣削力以及夹紧工件需要的夹紧力,这是该设计中的重点和难点。

The need for benchmarks to determine the positioning of the workpiece, and then select the positioning element and the workpiece clamping, clamping in the choice of the workpiece, the paper clamping with two different methods, namely： coarse milling of plane with the platen clamping mechanism is a screw, coarse face milling around when using a pneumatic clamping mechanism, the two methods in the production has its own strengths and weaknesses, but are widely used in production. Then calculate the required cutting force and clamping the workpiece clamping force, which is the focus of the design and difficulty.