In this article, I will explore the topic of CNC Punch Burrs, addressing the common issues associated with burrs that occur on the side of CNC punches. As a manufacturer, understanding what causes these burrs and how they affect the quality of our work is crucial. I will share my insights on the factors contributing to burr formation, the potential impacts on production, and the strategies we can employ to minimize them. Join me as we delve into this important aspect of CNC machining and discover how to achieve cleaner, more precise results.

Burrs are unwanted protrusions or rough edges that can form during the punching process. They are a common issue in CNC machining and can affect the overall quality and functionality of the finished product. Understanding the causes of burrs is essential for improving production efficiency and product quality.

Causes of CNC Punch Burr Formation

When a sheet metal piece has a burr on one side or a large burr on one side, there are two reasons.

⒈ The CNC punching die is different in focus and the work position is offset. This generally occurs in a larger station, such as the D station or the E station, the punching pressure is large, and the vibration causes the CNC Punch Burr mold to slightly shift. This problem occurs in small stations. Generally, the equipment is not debugged when it leaves the factory.

How to solve it? Need to find the CNC punching machine manufacturers for after-sales, the manufacturer uses the mandrel to adjust the position, so that the upper and lower molds are concentric. Experienced, with a mandrel in the hand, can be adjusted, but be careful, it is easy to cause damage to the mandrel or equipment failure.

⒉It may be related to programming, and one side of the CNC Punch burr is outside the sheet metal part or a rectangular mold. Checking the mold will reveal that the general edge is very blunt, the slope has appeared, and the other side is sharp. It will cause a big burr on one side. This is what we call a model.

The reason is: when paying attention to programming, the rectangular mold (cutting knife) only punched 3 sides, and no 4 sides were forced to die at the same time. This will cause the mold to be unevenly stressed, the mold is slightly elastically deformed, and the edge of the blade collides with the lower die edge of the gap is small, causing the die to wear rapidly.

Solution: Sharpen the mold to restore the sharpness on all four sides, modify the program, and correct the programming habits. The rectangular mold must ensure that the long sides of both sides are forced to die at the same time, so as not to accelerate the wear of the mold and reduce the occurrence of burrs.

Strategies to Minimize Burrs

• Regular Tool Maintenance: Keeping tools sharp and in good condition can significantly reduce burr formation.
• Optimizing Settings: Adjusting the speed, pressure, and feed rates can help achieve cleaner cuts.
• Using Deburring Techniques: Implementing deburring processes, such as mechanical or chemical methods, can effectively remove any remaining burrs after punching.
• Material Selection: Choosing materials that are less prone to burr formation can improve the overall quality of the punched parts.

Wniosek

Understanding what is going on with CNC Punch Burrs is essential for anyone involved in CNC machining. By identifying the causes of burrs and implementing effective strategies to minimize them, we can enhance product quality, reduce production costs, and ensure safety in the workspace. By continuously refining our processes, we can achieve cleaner, more precise results in our CNC operations.