| |
| PROBLEMS |
CAUSES |
SOLUTIONS |
| Premature wearing |
| of teeth |
|
1. Band Speed too fast |
1. Reduce band speed |
| 2.Teeth not cutting, merely rubbing |
2. Increase feed pressure |
| 3.Tooth pitch too coarse |
3. Select finer pitch |
| 4.Band and material over-heating |
4. Apply a copious supply of coolant |
| 5. Band Teeth running in wrong direction |
5. Replace band correctly |
| Excessive Band Vibration |
| whilst cutting |
|
1. Unsuitable band speed |
1. Increase or decrease according to section size & type of material being cut |
| 2. Incorrect cutting pressure being used |
2. Decrease or increase according to section size being cut |
| 3. Band pitch too coarse |
3. Select finer pitch |
| 4. Movement of material whilst being cut |
4. Hold/clamp material firmly |
| 5. Insufficient band tension |
5. Adjust band tension |
|
|
1. Tooth pitch too coarse for section being cut |
1. Select a finer pitch |
| 2. Excessive feed pressure |
2. Reduce feed pressure |
| 3. Band teeth approaching sharp corner on the material being cut |
3. If possible present a flat surface to the band when starting to cut |
| 4. Material insecurely held |
4. Hold/clamp material firmly |
| 5. Gullets choked with swarf |
5. Apply suitable coolant |
| Rough surface finish |
| of section |
| being cut |
|
1. Tooth pitch too coarse |
1. Select finer pitch |
| 2. Band speed too slow |
2. Increase band speed |
| 3. Feed rate too great |
3. Decrease feeding rate |
|
|
1. Band tension too great |
1. Decrease band tension. Ensure that band tension is released when not used |
| 2. Feed pressure too great |
2. Decrease feed pressure |
| 3. Tooth pitch too coarse |
3. Select finer band |
| 4. Mal-adjusted guides |
4. Adjust correctly |
| 5. Machine driving wheels at fault |
5. Ensure periphery of wheels are free from defects |
| 6. Band running too fast |
6. Decrease band speed |
| Bandsaw making bow |
| shaped cut |
|
1. Feed pressure too great |
1. Decrease band feed pressure |
| 2. Insufficient guide support to band |
2. Adjust guides as close as possible to material being cut |
| 3. Pitch too fine |
3. Select coarser tooth pitch |
| 4. Insufficient band tension |
4. Increase band tension |
| Gullets of bandsaw |
| teeth choked |
| with swarf |
|
1. Tooth pitch too fine |
1. Select coarser pitch |
| 2. Lack of coolant |
2. Apply liberal supply of suitable coolant |
| 3. Band speed too fast |
3. Decrease band speed |
| Bandsaw running |
| out of |
| square in cut |
|
1. Mal-adjusted bandsaw guides |
1. Re-align bandsaw guides – if worn replace |
| 2. Excessive feed pressure |
2. Reduce feed pressure |
| 3. Uneven in material being cut inclusions of material being cut |
3. Generally decrease cutting rate |
