Fault Analysis and Troubleshooting of Automatic Revolving Toolholder for Economical CNC Lathes
With the rapid development of economy, CNC lathes have become an indispensable tool in the arsenal of modern machining centers. The key component of a CNC lathe is its automatic revolving toolholder, which is essential for the efficient, accurate and repeatable production of parts.
However, due to its complexity and the relative lack of operator and maintenance experience, the automatic revolving toolholder may sometimes experience difficulties. This article will discuss the common faults associated with the automatic revolving toolholder and provide some suggested solutions.
The first type of fault that can occur with an automatic revolving toolholder is an excessively high divergence speed. This can occur due to either a malfunctioning servo motor or an improperly adjusted motor-controller. To check for an issue with the motor, start by disconnecting the motor controller. If the motor fails to spin, the problem is most likely due to a malfunction within the motor. If the motor does spin, the problem is likely due to a faulty or incorrectly adjusted motor-controller. You can then adjust the speed of the motor-controller to correct the problem.
The second common fault associated with automatic revolving toolholders is problems with the up-and-down motion of the holder. This motion is primarily controlled by the holders spring-loaded release mechanism and is usually caused by a fault or wear of the spring. To diagnose this problem, inspect the spring and the release mechanism to determine if there is any wear or visible damage. If the spring looks to be in good condition, adjust the tension of the spring to reduce the amount of force needed to activate the release. If the spring is worn out, then you must replace it.
The third type of fault associated with automatic revolving toolholders is a drift issue. This is caused by either incorrect tension in the belt or bad spindle bearings. To check for incorrect tension, measure the tension of the belt with a tension gauge and adjust it if necessary. If the tension is correct but the spindle bearings are worn out, they will need to be replaced.
Finally, grinding noise may be heard while the holder is spinning. This is usually caused by worn spindle bearings or the holder being stuck due to grinding particles or other contaminants. To diagnose this problem, inspect the spindle bearings for wear and replace them if necessary. If the holder is stuck, loosen the screws that hold it in place then spray the holder with a lubricant to help remove any contaminants.
In conclusion, the automatic revolving toolholder on a CNC lathe may suffer from a variety of faults. However, with a bit of troubleshooting and adjustments, many of these faults can be easily identified and fixed.
