Flat Pressure Type Abrasive Belt Drawing

Flat pressing type wire drawing is a very common wire drawing method. The workpiece is fixed on the mold and the grinding belt runs at high speed. There is a pneumatically controlled press block on the back of the belt that can move up and down. After pressing down, the belt is attached to the quilt. The processed surface is brushed. The commonly used equipment is a flat belt sander. Flat pressing type wire drawing is suitable for small-area flat wire drawing surface, and is widely used in the drawing of digital camera housings, mobile phone housings, and so on. The threads on the surface of this drawing are usually straight threads with continuous threads. Since the abrasive belt is used, it has a wide range of particle size options, so you can use coarse-grained abrasive belts to process rough and obvious hand-feel lines, or fine-grained abrasive belts to process finer silk lines. 3M company can not only provide ordinary abrasive belts, but also pyramid series abrasive belts and non-woven nylon abrasive belts that are more suitable for wire drawing. Abrasive belt grinding and drawing the surface as a whole will generate a lot of heat and cause stress concentration on the drawing side of the workpiece, especially for thin-walled parts. Therefore, this method is suitable for small-area wire drawing processing. Because it is a push-down operation, it is usually applied to a flat surface, and the surface cannot have protrusions, such as raised text signs. However, through the clever design of the press block and other molds, it is also possible to draw wires on slightly curved workpieces. The specific method should be discussed in detail depending on the degree of bending.