Common CNC Cutting Issues and How to Fix Them

Computer numerical control (CNC) is a computer-operated machine used for the precise and efficient cutting of metallic sheets and fabrication. Although CNC cutting offers many benefits, such as precise cutting, less energy usage and less waste production, it sometimes poses CNC cutting challenges that need maintenance and proper measures to offer effective and high-quality work. In this blog, we will highlight some of the most common CNC cutting mistakes and also provide solutions to fix them at the earliest.

Common CNC Cutting Mistakes


  1. Using the Wrong Parameters and Low Maintenance  


There can be many scratches, unevenness and rough textures on the product, which may reduce the quality and aesthetic values. The main causes of this result are vibrations and inaccurate cutting directions. There are many CNC cutting tools, and improper maintenance of these tools and operating them on the wrong settings can lead to vibration while working.  

Solutions: 

  • Make sure the tools are sharpened regularly

  • Operate them on the correct settings

  • Use correct milling techniques

  • Constant maintenance 

  • Use accurate spindle speed and feed rate. 


  1. Using Incompetent Material


Using incompetent materials can lead to inaccurate size while cutting. Other reasons can be machine error or environmental factors like temperature and humidity. At Mahavir Enterprise, with our CNC cutting in Vadodara, we are backed by high-performing CNC machines optimized for compatibility with your specific materials. 

Solutions:

  • Routinely perform CNC machine checkups and calibrations. 

  • Use consistent and competent material. 

  • Control the temperature and humidity around the machine.  

  1. Mismatching the Parameters


Burned and discoloured marks on the product piece indicate that the CNC machine overheated during the cutting. It is usually caused when the operator mismatches the feed rate and cutting speed. Another factor that contributes to overheating is the improper cooling and ventilation, especially when working with materials like titanium.

Solution:  

  • Adjust the cutting speed and feed speed accurately. 

  • Maintain proper cooling and ventilation. 

  •  Lower the cutting speed and increase cooling when working with materials like titanium.   


  1. Poor Tool optimisation 


Burrs or raised edgedes or surface protusions often appear on the finished products. This is not a good sign for the product’s quality and aesthetic values. It is due to poor tool optimisation done by the CNC operator, using soft materials or using blunt cutters. 

Solutions: 

  • Use sandpapers for manual deburring or use advanced tools for thermal deburring. 

  • Ensure proper tool settings and sharpness.

  • Modify tool paths and use accurate chip deflectors and breakers. 


  1. Cracking or fracturing 


Due to high strength, using inappropriate tool paths, hardness of the piece, or using an inappropriate tool in terms of strength, can lead to cracking or fracturing of the product piece. 

Solutions: 

  • Use a sharp tool to ensure precise cutting

  • Use diamond or carbide-coated cutters. 

  • Use a tool that can distribute cutting forces equally. 


These are some of the most common types of mistakes that operators make while working with CNC machines, but not with us. At Mahavir Enterprise, the top provider for CNC cutting, CNC bending, CNC plasma cutting and  CNC laser cutting services in Vadodara, we use highly qualified and experienced operators who ensure the high quality of the workpiece. For the best services with CNC, contact us!

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