CNC Machine Problems and Solutions

CNC machines are known for being fairly durable, reliable and resilient machines, however, their complexity can also open the door for issues if not maintained and operated correctly. Here are some of the most common problems that occur at CNC company’s along with their causes and solutions.

Chatter

‘Chatter’ is the term for the noise the machine makes whilst operating. It could be either the tool or the whole machine which is chattering, but either way it’s best to get it fixed to maintain work quality and machine lifespan. The cause of this is often an unfavourable cut width or depth, so check on that and play around with the RPM of the operation as this can also have an effect on chatter.

Overheating

Overheating can result in the oxidisation of switch contacts, causing arcing – which is definitely something you want to avoid. It can also minimise insulation resistance which can result in depleted conductivity and shorts. When machines overheat, this can cause corrosion through accumulation of condensation on the components.  Basically, overheating can kill your machine. The inside of your CNC machine can exceed over 150 degree,  if blockages of debris and dirt build up, then these temperatures can get even higher.

The best way to avoid exceeding your machine’s maximum temperature is to regularly maintain. Habitual cleaning and maintenance helps to avoid any build up which could lead to overheating. Also, regulating the heat and humidity of the room can make a difference in keeping the machines in their best working order and preventing overheating.

Cutting issues

There are a number of cutting issues which can arise in CNC machining but two main causes: improper programming or improper tools or settings.  One common cutting issue is burn marks on the edges of the material in question, this can be as a result of an incorrect cutting speed, ineffective lubricant or a tool becoming blunt. To prevent improper programming or settings, ensure that all operators of the machine have a full understanding and training of how to use the machine’s functions correctly, so as not to cause any damage to your machine or the materials.

To keep your CNC machine in optimum condition and avoid these issues, be sure to:

• Regularly carry out maintenance checks
• Keep the workshop and machines clean
• Ensure all operators have full working knowledge of how to use the machines