Punching Process To Produce Holes Of Different Shapes And Sizes

Punching, punching, and punching are three commonly used processing procedures for processing metal raw materials, such as sheet metal. All three processes require the use of a machine to deform or change the physical properties of the original metal in some way. Although piercing, punching and blanking are similar, they have different tasks.

Punching provides a simple and effective method of punching holes in metal workpieces. The workpiece is aligned between the punching tool (made of tungsten carbide or similar metal with excellent strength) and the die.

Definition of punching

Stamping is a mechanical manufacturing method that involves removing scrap metal from original metal plates. A punch is required to press the tool through a piece of raw metal. Although stamping is usually done using sheet metal, other materials such as paper, plastic and different fibers are also supported. When placed on the mold, the button presses over the metal plate. Therefore, the stamped metal sheet needs to have the same shape as the mold used. The simple understanding is that the punching process is to cut out a shape of waste from the finished product, and what is left on the machine is the outer part.

The characteristics of the stamping process include: it can produce economical holes in strip steel and sheet metal during medium and high production processes. Able to quickly produce holes of different shapes. The stamping process forces a steel punch (made of hardened steel) into and through the workpiece. The punch diameter determines the size of the hole formed in the workpiece.

Punching is a more common metal processing technology in the manufacturing industry because punching has unique advantages. Punching process: A more cost-effective process for punching holes in metal workpieces. Secondly, holes of various shapes and sizes can be punched through punching. If a manufacturing company needs a hole of a specific shape, it can simply use a mold of that shape. Third, the stamping process is very fast, and it only takes a few seconds to complete a stamping.

Punching principle

The concept of punching processing refers to the slitting process that cuts the sheet in one stroke. Create round holes and other shapes in the part, and cut the outer contour with a single stroke.

The working principle of the hole punch is similar to that of a paper hole punch. The hole punch presses the paper against the support of the hole punch and then forms a circular opening. The waste from the punching process is collected in the punching container. Punching works in exactly the same way: the sheet is located between the punch and the die. The punch moves down and is inserted into the mold. The punch and the edge of the die move parallel to cut the sheet.

Observe carefully, the stamping process is carried out in four stages. When the punch contacts the sheet, the sheet is deformed. Then it was cut off. Then, the tension inside the material is so great that the sheet breaks along the cut contour. The cut sheet, the so-called stamped blank is ejected downward. When the punch moves upward again, it may pull the paper. In this case, the peeler releases the sheet from the punch.

The higher the cutting rate of the edge of the sheet, the better the edge quality. For example, in order to accurately fit, first, punch out the preliminary hole, and then use a larger tool to punch out the ideal diameter. The percentage of cutting along such an edge is as high as 100%.