FAQ of CNC Router Electric Spindle and Solution

Spindle motor is the necessary electronic component for all kinds of cnc router machine includes basic cnc router 1325, nesting cnc router, router cnc 2030, auto tool changer cnc router, styrofoam milling cnc router and multi spindle cnc router. 

We may encounter a lot of small problems when we using the spindle and these problems make many cnc operator headaches. Here we would like to share all the frequently asked questions and their solution to you. We sincerely hope this information is helpful for you. EagleTec is very glad to help your business grow up.

1. We should take care on new spindles when we use it 

In the first time to run a new spindle after it installed on cnc router machine, it is better to start at low speed 6,000 rpm and increase by 3,000 rpm after every 10 minutes running. We can use it normally after it up to Max. rpm 24,000 or 18,000 according to different spindle motor specification. This is because that bearings inside new spindle need to be preheated. Furthermore, in order to extend the service life of spindle, it is better to start trial operation for 10-15 minutes before we use it normally. When we build the machine, EagleTec do same like this on every machine.

2. Why the spindle stopped after only two or three seconds running?

Four reasons may cause this problem happen.

2.1 Insulation wrap does not work because water come in.

Solution: please dry the insulation wrap.

2.2 Insulation wrap is damage because high temperature.

Solution: please replace the cable coil.

2.3 Over-current protection caused by phase failure.

Solution: please check the wiring of spindle.

2.4 Acceleration time is too short.

Solution: please increase the acceleration time in inverter parameter.

3. Why the spindle does not start after power on?

Three reasons may cause this happen, please check one by one.

3.1 Inverter has no output or wrong parameter setup

Solution: please check the output setup of your inverter.

3.2 The spindle plug is unconnected or wiring failure on plug.

Solution: please check the plug, socket and their wiring.

3.3 The stator coil is burnt out.

Solution: please replace the stator coil.

4. Why the spindle does not turn but with noise? Or why the spindle turns after a minute but no force?

Spindle does not turns, or turns but with little force, noisy, much heat on motor. This is because phase failure from inverter output. The reason is most probably from the wiring problem between inverter and spindle motor. Please check the welding points of the aviation plug or check the three cable circuit of inverter whether open circuit or not. Also, we can first turn the spindle by hand to check the rotor smooth and the wiring is correct or not.

5. Why the spindle starts with much heat and inverter alarm code?

This is because the wrong parameter setup in inverter. Rated frequency, Max.output frequency, upper limit frequency and lower limit frequency must be set seriously according to the spindle nameplate. And set the acceleration and deceleration time to be 6-10 seconds.

6. Why the new spindle starts with sounds like sisi?

Please do not worry on this point. The sound is from the solid high speed grease inside the spindle bearing. You are suggested to run the new spindle at low speed 50-100Hz for 30 minutes and the sound will disappear. It is the same to the spindle which is no using for a long time. This action can give us two benefits, first the service life of spindle is extended; second the sound is stable.

Any question, please feel free to contact us. 

Excerpt from www.eaglecnctec.com 

Jinan EagleTec CNC Machinery Co.,Ltd. 

 

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. 

NC Studio Software V8 Cannot Been Installed Successfully

CNC system Weihong Lambda 4S is widely used on nesting cnc router, auto tool changing cnc router and multi spindle rotary cnc router. Full set system consist of these parts. 

One piece lambda 4S controller 

One piece DB9M/F cable

One piece communication card PM serial

One set NC studio motion control software CD

One piece handwheel (optional as your request)

Lambda 4S controller is mounted in electronic cabinet to control the components; Communication card is inserted into PCI card slot of the computer; the NC studio software is installed in the computer operating system. If everything ok, motion software sends order to Lambda 4S controller via the PM communication card and controller control the axis motion via relevant components. But sometimes, when the first time to setup the control system, we will encounter problem that the NC studio motion control software can not been installed successfully in windows operating system. Please see picture below

What reason causes it happen? 

It is probably because your windows system is incompatible with the NC studio software. In windows, you cannot install a driver if its digital signature can’t be verified by windows. This means that all drivers and programs must be digitally signed (verified) in order to be installed and run on latest Windows Operating Systems. It is self-protection mechanism of windows operating system. Due to some reasons, the NC studio software cannot be verified by the latest operating system because its update always later than the operating systems’. So this problem happened. In this case, best solution is to use an older version system instead of the latest version. Our experience is that NC studio software V8 can run very well on windows 7 system 32 bit.

If it is impossible for some users to change windows system, we can have a second alternative. That is to disable Driver Signature Enforcement in Windows. But please noted that this action is a security risk and you must disable it only if you are sure the driver software or program that you want to install and run is trusted and legal.

Operation guide:

Reboot the computer. Press 'F8' during restart. 

Select Disable Driver Signature Enforcement from the boot menu. 

From www.eaglecnctec.com
Jinan EagleTec CNC Machinery Co.,Ltd.