In machining, horns of different heights are often required to be used in conjunction with fixtures. The most common method is to cut rectangular strips with iron plates of different thicknesses (such as δ=1, 2, 3...mm) for different height values, but there are the following shortcomings during use: 1) In each machining process, it is necessary to use a considerable gasket, which is very inconvenient to store. (2) It is common for the shim to be uneven on both sides of the stack. After many sheets are stacked, the sheet has a gap with the sheet, which is easy to be supported or clamped.
New practical horn