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Like any other machine, milling machines are subject to wear and tear. The physical wear is a result of the use of the machines and of the abrasion caused by friction during use. Such wear can be reduced by regular maintenance and servicing of the milling machine by the operator:
The degree of wear depends on:
- maintenance and servicing of the milling machine,- properties of coolants and lubricants,
- environmental conditions (dust, temperature variations, etc.)
-operating conditions (single or multi-shift operation, volume of metal removed, proper operation).
Servicing cycle of milling machines:
|
Kind of servicing work |
Interval |
|
1. Cleaning of guideways |
daily |
|
2. Inspection of oil level (sight glasses) |
daily |
|
3. Lubrication as per lubrication chart |
as per instructions on lubrication chart |
|
4. Oil renewal |
semi-annually/annually |
|
5. Inspection and, if necessary, refilling of coolant tank |
weekly |
|
6. Thorough cleaning of the machine |
weekly |
|
7. Inspection of slackness of bearings |
annually |
|
8. Inspection of electrics (contactors, limit switches, cable connections) |
every 3 months |
|
9. Inspection of lubrication pump |
semi-annually |
|
10. Coolant renewal |
semi-annually |
For lubrication of a machine the following basic rule applies:
The specified lubricant is to be applied to the relevant lubricating point in the specified quantity and at the specified time!
It is absolutely necessary to observe the safety regulations for setting-up and operation as well as for maintenance and servicing in order to avoid accidents and interruptions of the production. Any defects found at the lubricating points of the milling machine are to be reported to the serviceman in charge. Repairs, particularly on the electrics, control elements and lubricating points, must be done by authorized specialists only.
For handling and storing lubricants, coolants, etc. the respective fire protection regulations (such as “no smoking” within 5 m; flash points of oil and grease) are to be strictly adhered to in order to prevent fire.
For setting-up, maintenance, servicing and repair work on the milling machine the main switch must always be in “OFF” position - danger of accidents!
What can be done to reduce the physical wear of the milling
machine?
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What is to be observed for handling (storing and using) oil and
lubricants?
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What is the basic rule to be observed for setting-up,
maintenance and servicing work in the interest of labour
safety?
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