Vertical/Tabletop External Vacuum Packaging Machine

　　How to Process External Round Knurling for Embossing

　　External round knurling is a common method for creating patterns on cylindrical surfaces, often used in embossing applications. The process involves several steps to achieve the desired knurled pattern.

　　First, the appropriate knurling tool needs to be selected. There are different types of knurling tools available, such as straight - knurling wheels, diamond - knurling wheels, and serrated - knurling wheels, each with its own unique pattern. The choice of the knurling tool depends on the specific pattern requirements and the material of the workpiece. For example, if a diamond - shaped pattern is desired on a metal rod for better grip, a diamond - knurling wheel would be the right choice.

　　Before starting the knurling process, the workpiece needs to be properly prepared. This includes ensuring that the surface of the cylindrical part is clean, smooth, and free of any defects. Any dirt or roughness on the surface can affect the quality of the knurling pattern. The workpiece is then mounted securely in a lathe or a similar machining device.

　　During the knurling process, the knurling tool is brought into contact with the rotating workpiece. The pressure applied by the knurling tool is crucial. If the pressure is too low, the pattern may not be clearly imprinted on the surface. On the other hand, if the pressure is too high, it can cause the workpiece to deform or the knurling tool to wear out quickly. The speed of the workpiece rotation also affects the quality of the knurling. A proper combination of rotation speed and feed rate of the knurling tool needs to be determined based on the material and the desired pattern depth.

　　After the knurling process, the workpiece may need some post - processing. This can include deburring to remove any sharp edges or burrs formed during the knurling process. The surface of the knurled part may also be polished or treated with a protective coating to enhance its appearance and durability. In some cases, if the knurling is part of an embossing process, further steps such as heat - treatment or chemical - treatment may be required to achieve the final functional and aesthetic properties of the product.

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