VMC850 CNC Vertical Machining Center

Beyond the common areas, machine operators may also encounter the following problems with their CNC machines.

Power Supply Problems

Sometimes, the CNC vertical machining center tool’s display or different parts may not work due to issues with the power supply. To rectify this, ensure that the correct power and voltage is used for the input side of the power and supply. You should subsequently see if the output or secondary side is properly working.

If there is no power or voltage reading is low, consider disconnecting the output wires with the power off, and then power up and recheck the output side. You can also check to see if the LED on the machines are working, and have a look at the fuses to see if they’ve blown.

A stable power supply is required and is the basis for trouble free operations with any CNC vertical machining center tool.

Attention: Call a specialist for such checks on electrical parts or connections.

Automatic Tool Changer Problems

Occasionally, you may face challenges with the automatic tool changer in your CNC vertical machining center Tool. This could be resolved by learning every step of the tool changing process, and troubleshooting it by diagnosing what went wrong.

Check that the base, the gripper arm, tool holder, support arm and tool magazines are working properly and smoothly. Or examine the swivelling and mechanical arm action to see that they work properly. Do also keep the automatic tool changer and tool holders clean of chips and coolant.

Machine Vibration/ Chatter

When your CNC vertical machining center vibrates when it is doing its job, it could significantly reduce the life of your tool, affect the durability of your CNC machine, or undermine the quality of your machined part. You can detect this merely by listening to the noise generated – this may sometimes be very loud!

To resolve this, you need to diagnose if its workpiece chatter or tool chatter. You can also adjust the RPM of your machining process, so that the frequencies of the machining process will not resonate with the material frequency.

Note: For machining centres it is essential to use balanced tool holders when using spindle speeds above 8,000rpm. Otherwise, vibration marks are the first to be seen on your machined part. This will be followed by a shortened tool life and lastly, failure of the bearings of your spindle.

Overheating of Machine Tool

For high volume and long durations of machining, overheating may sometimes occur. Your CNC machine tool may hit temperatures of 150 degrees or more within. This could negatively affect the result of your machining job, the tool used, as well as the CNC vertical machining center itself.

To avoid this, ensure that you regularly clear all channels and clean the machine to be free of dirt, soil and material. Have a regular calendar of cleaning up all metal shavings as well as the liquids used in cutting.

Overheating of a vertical machining center spindle comes mainly from extensive usage at highest rpm. A spindle with Greased Lubrication cannot be used over extensive hours at full rpm. A spindle with Air-Oil Lubrication is better, while an Oil-Jet Lubrication spindle, like what Hwacheon is using, has no problem to run the longest hours even at maximum rpm.

Variations in environment temperature in the workshop also influence machine overheating. Wind / air drafts through doors or open windows may affect the accuracy of your precision vertical machining center tool.

A nice wide window where the sun can shine in freely plus a cold blowing aircon may give a happy feeling to your operators, but your machine will not enjoy it at all as it gets distorted in all its axis.

For more information about VMC850 CNC Vertical Machining Center, we are glad to answer for you.