15.0Troubleshooting
15.1Blade and cutting problems
Problem | Probable Cause | Solution | |
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| Ensure proper coolant flow; hoses unclogged; nozzles | |
| Coolant flow problem | pointed correctly, etc. Make sure coolant type is | |
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| suitable for the machine. | |
| Material too hard | Check the blade speed and the type of blade you are | |
| using. Also be aware of feed pressure. | ||
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| With a new blade it is necessary to start cutting at half | |
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| feeding speed. After the | |
| Blade not | surface of about 300 cm2 for hard materials and about | |
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| 1000 cm2 for soft materials) the blade and feed speeds | |
Teeth breaking |
| can be brought up to normal values. | |
Blade with excessively fine | The swarf wedges into the bottom of the teeth causing | ||
| excessive pressure on the teeth themselves. Use a | ||
| tooth pitch | ||
| blade with coarser tooth pitch. | ||
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| The surface of the cut may have undergone work | |
| New blade inserted in a | hardening. When starting work again, use a lower | |
| blade speed and reduced feed pressure. A tooth from | ||
| partially completed cut | ||
| the old blade may be left in the cut: check and remove | ||
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| before starting work again. | |
| Work piece not clamped firmly | Any movement of the work piece during cutting can | |
| cause broken teeth: check the vise, jaws and clamping | ||
| in place | ||
| pressure. | ||
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| Feed speed too slow | The blade runs over the material without removing it: | |
| increase feed speed. | ||
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| Blade speed too high | The teeth slide over the material without cutting it: | |
| reduce the blade speed. | ||
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| Insufficient coolant | Check the coolant level and clean coolant lines and | |
Rapid tooth wear | nozzles. | ||
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Incorrect fluid concentration | Check and use the correct concentration. | ||
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| The materials may present altered zones either on the | |
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| surface, such as oxides or sand, or in section, such as | |
| Material defective | ||
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| much harder than the blade, cause the teeth to break: | |
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| Discard or clean these materials. | |
| Blade speed too high | Reduce blade speed. | |
Broken blade | Teeth in contact with material | Always check the position of the blade before starting | |
before starting the cut | a new job. | ||
| Insufficient coolant | Check the coolant level and clean coolant lines and | |
| nozzles. | ||
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Cuts not straight | Feed speed too strong | Reduce feed speed. | |
| Blade not perpendicular to | Contact Walter Meier technical support. | |
| workpiece. |
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Table 5
16