Reasons for bearing problems in CNC machine tools
1、 Improper installation
1. Using brute force during installation, hitting the bearing directly with a hammer can cause the greatest damage to the bearing; It is the main cause of deformation.
2. Improper installation, deviation or failure to install in the bearing position, resulting in insufficient bearing clearance. The inner and outer circles are not at the same center of rotation, resulting in a lack of concentricity.
Suggestion: Choose appropriate or professional bearing installation tools, and use specialized instruments to test after installation.
2、 Poor lubrication
According to the investigation, poor lubrication is one of the main reasons for premature bearing damage. The main reasons include: failure to timely add lubricant or lubricating oil; Lubricant or lubricating oil not added properly; Improper selection of lubricants or lubricating oils; Incorrect lubrication method, etc.
Suggestion: Choose the correct lubricant or oil, and use the correct lubrication filling method.
3、 Pollution
Pollution can also cause premature damage to bearings, which refers to the entry of dust, metal shavings, etc. into the interior of bearings. The main reasons include: opening the bearing packaging too early before use, causing contamination; The working environment during installation is not clean, causing pollution; The working environment of bearings is not clean, and the working medium is contaminated.
Suggestion: It is best not to unpack the bearing before use; Keep the installation environment clean during installation and clean the bearings to be used; Enhance the sealing device of the bearing.
4、 Fatigue
Fatigue failure is a common way of bearing damage. The common causes of fatigue failure may be: long-term overload operation of bearings; Failure to repair in a timely manner; Improper maintenance; Equipment aging, etc.
Suggestion: Choose the appropriate type of bearing and replace fatigue bearings regularly and promptly.
Horizontal machining centers and horizontal five axis machining centers have been rarely introduced since their establishment, because horizontal machining centers are relatively rare in the market and users rarely purchase them. Generally, there are more users who choose vertical machining centers. The reason is that vertical machining centers have a small footprint and high cost-effectiveness; Horizontal machining centers occupy a large area and are more expensive than vertical machining centers, so most users rarely choose horizontal machining centers. Although horizontal machining centers are rarely used by users, I would like to introduce the structure of horizontal machining centers to help everyone better understand them. Today, the editor will mainly introduce the types of horizontal five axis machining centers. Horizontal five axis machining centers can be divided into two types based on the setting of the rotation axis, namely, two rotation axes set on the worktable and two rotation axes set on the spindle and worktable respectively
