Burr Direction In Sheet Metal

See also drawing and forming blank 1 sheet metal stock from which a product is to be made.

Burr direction in sheet metal.

2 workpiece resulting from blanking operation. The metal stamping quote will include the cost for the tooling tool die set to produce the parts and also the part cost. Using burr free design such as. De burring can be avoided by considering the direction of the burrs in the design of the parts.

For elevator stainless steel sheet metal parts the product design department considers the burr formation mechanism and removal method at the product and process design stage to minimize burrs. The burr is a thin ridge of material that is formed due to the elongation of metal during the final separation of the sheet. Stamping includes a variety of sheet metal forming manufacturing processes using a machine. But as a side product of many manufacturing methods it is often unavoidable.

It is usually an unwanted piece of material and is removed with a deburring tool in a process called deburring. Burr commonly occurs when producing sheet metal parts using different manufacturing methods. They include burrs fracture burnishing rollover and work hardening. Attaining a burr free cut is about ensuring the beam parameters and gas dynamics work together to ensure the right amount of molten metal evacuates the kerf at the right time and in the right way.

To the edges where burrs may occur to reduce the occurrence of burrs. In manufacturing practice sharp tools can mitigate burrs. Add grooves cuts rounded corners etc. Figure 2 a burr or protruding ragged edge shown at 100x magnification occurs as the material is sheared at an angle against the blanking direction.

Figure 3 a microcrack that occurred during. These combined costs are compared to sheet metal prices for an anticipated cost savings. The sheet metal stamping process is a very fast and precise manufacturing process. Clearly the formation of burr should be avoided whenever possible.

Which manufacturing methods leave a burr. But what if press tool is not working efficiently or it takes many more operations to produce stamped parts. Metal stamping is utilized for cost effiency when a sheet metal requirement has a significant quantity range. Burrs can interfere with subsequent forming processes.

Creation of a formed feature by angular displacement of a sheet metal workpiece. Figure 1 the sheared edge exhibits some distinctive characteristics. So it is very important to design an economy friendly and time saving press tools. Metal burr extending beyond the edge of the cut piece view on the cut face top and from the bottom bottom a burr is a raised edge or small piece of material that remains attached to a workpiece after a modification process.

Burr height up to 10 of material thickness can be expected. Burr direction side of the stock on which burrs appear. In those instances deburring is necessary.