How to Solve Vibration on CNC Router | EagleTec

As every cnc operator knows, sometimes there is vibration on cnc router during the process of machining. Vibration will give us bad finishing or bad job. So when we found there is vibration, we have to stop the machining process and find solution for vibration. Many factors can cause machine shudder like spindle RPM, feeding rate of axes and the mechanical rigidity.

In general, the vibration is probably because:

a. value of spindle RPM is too low

b. feeding speed of axes is too fast

c. the material is too hard 

d. over the limit of cnc router machine rigidity

In other words, the machining parameter is not proper for the machine rigidity performance. Or we can see the parameter we set is over the limit of machine mechanical rigidity performance. So as solution we need to adjust the spindle RPM and feeding rate of all axes. We can increase the spindle RPM and reduce the feeding rate to solve the vibration. And spindle RPM and feeding speed of axes should be difference according to different hardness of materials.

A CNC router machine with good performance of rigidity gives you wide range on choice of machining parameter setup. Or we can see, a good machine gives us more possibility on machining performance. A good machine can work fast and accurately.

If you already own one cnc router, the solution is only to get proper machining parameter; if you are considering to buy one machine now, you can do more. You are suggested to take the machine rigidity into your consideration. We can check this performance from the machine construction, the raw materials and the process technology.  

1) Machine construction means design of machine frame. Heavy duty design is better than general duty design on rigidity.

2) The materials used to make the machine frame. We can check with cnc supplier the thickness of the steel they use for beam, frame and the support plate.

3) Is the machine frame via VSR treatment? Process of vibrating stress is to reduce residual stress. This process is very important to give a better performance on machine rigidity.  

All above is our personal view, if you have different idea, please contact us freely to discuss. 

Excerpt from www.eaglecnctec.com

Jinan EagleTec CNC Machinery Co.,Ltd.