Common faults and troubleshooting methods of sawing machines

What are the common faults of sawing machines?
What are the reasons for these failures? How to repair them?
Next, the sawing machine manufacturer will introduce you one by one.

Fault 1: The section is rough and uneven
Cause of issue:
1. The tooth is dull and the tooth tip is damaged;
2. Improper feed speed;
3. Improper orientation of guide arm and workpiece;
4. Improper tension;
5. Improper selection of teeth;
6. Insufficient cooling.
Approach:
1. Replace the new belt;
2. Adjust the speed;
3. Adjust the workpiece and guide arm;
4. Adjust the tension;
5. Select teeth according to the size and shape of the workpiece.

Fault 2: Oscillation
Cause of issue:
1. Improper feed speed;
2. Improper selection of teeth;
3. Improper tension;
4. The workpiece is not clamped;
5. The hydraulic system is unstable.
Approach:
1. Adjust the speed and feed;
2. Select teeth according to the size and shape of the workpiece;
3. Adjust the tension;
4. Clamp the workpiece;
5. Overhaul equipment.

Fault 3: Premature passivation of sawtooth
Cause of issue:
1. Improper running-in;
2. The workpiece is too hard;
3. The speed is too fast and the feed is too large;
4. The feed is too small;
5. Lack of cooling;
6. The workpiece is mixed with hard blocks;
7. Improper selection of teeth;
8. The saw belt teeth are installed in the opposite direction;
9. The tension is not large;
10. The saw frame is not raised in place;
11. The new belt cuts the old mouth.
Approach:
1. Pay attention to the running-in of the new belt and reduce the feed appropriately;
2. Query the workpiece production and processing standards to select accurate saw belts;
3. Adjust the speed and feed;
4. Increase the feed and pay attention to chip formation;
5. Choose the best coolant;
6. Check the hardness of the workpiece;
7. Select teeth according to the workpiece condition;
8. Reload the belt from scratch;
9. Adjust the tension;
10. Adjust the height of the saw frame from scratch;
11. Steer clear of old cutoffs.

Fault 4: The saw belt is cracked in a straight line
Cause of issue:
1. The tension is not large;
2. The speed is too fast;
3. Guide damage;
4. Severe friction between saw belt and flange;
5. Improper belt selection;
6. The feed is too large;
7. Improper cooling;
8. When the machine is turned on, the saw belt directly touches the workpiece;
9. The guide block is clamped too tightly;
10. Improper workpiece clamping.
Approach:
1. Adjust the tension;
2. Adjust the speed to reduce the load of the saw belt;
3. The query guide block is replaced in time;
4. Adjust the saw wheel;
5. Select the belt according to the condition of the workpiece;
6. Adjust the feed rate;
7. Use precise cutting fluid;
8. The saw belt and the workpiece should at least maintain an appropriate interval before starting up;
9. Adjust the guide block;
10. Adjust the vise.

Fault 5: The saw belt is irregularly cracked
Cause of issue:
1. The saw belt is distorted too much;
2. The workpiece is loose.
Approach:
1. Adjust the sawing machine;
2. Adjust the vise to clamp the workpiece.

Trouble six: tooth punching, broken tooth
Cause of issue:
1. The workpiece is small and the sawtooth is too large;
2. The workpiece is large and the sawtooth is too small;
3. The speed is too slow;
4. Feed too fast;
5. Trimming or cutting sharp corners;
6. The saw belt is jammed and the workpiece is loose;
7. The sawtooth is in the wrong direction;
8. The workpiece processing conditions are in doubt, such as hard lumps or peeling;
9. The tension is too small;
10. The guide block loosens the cassette;
11. Wrong choice of saw belt width;
12. The guide block is worn;
13. Too fast.
Approach:
1. Select the tooth pitch according to the workpiece condition;
2. Reduce feed;
3. Speed ​​up;
4. Accurately select the position of the lower knife;
5. Avoid cutting the old with the new tape;
6. Check the hydraulic system of the clamping equipment to ensure that the vise workpiece is normal;
7. Reload the belt from scratch;
8. Check the workpiece hardness and processing conditions;
9. Conditioning tension;
10. Check the guide to match the width of the saw band;
11. Check the actual width of the saw belt;
12. Replace the guide block;
13. Conditioning speed.

Fault 7: Chips stick to the tip of the tooth (commonly known as chip welding point)
Cause of issue:
1. Improper cutting fluid or no cutting fluid at all;
2. The proportion of cutting fluid water and oil is out of balance;
3. The speed is too fast and the feed is too large;
4. The chip cleaning brush is worn;
5. Mistakes in tooth selection.
Approach:
1. Select accurate cutting fluid;
2. Adjust the water and oil ratio (5:1 for high alloy, 10:1 for low alloy and carbon steel);
3. Adjust the speed, adjust the feed amount (feed amount);
4. Replace the brush;
5. Reasonable selection of sawtooth.

Fault 8: T (mushroom shape) on the back
Cause of issue:
1. The feed is too large;
2. The guide arm separation is too wide;
3. The conflict between the flange of the saw wheel and the saw belt is too large;
4. The sawtooth is too small and not suitable for blanking the workpiece;
5. The guide has some wear or is stuck;
6. The tension of the saw belt is not good.
Approach:
1. Conditioning feed;
2. Adjust the orientation of the guide arm;
3. Adjust the saw wheel;
4. Select the exact tooth shape and pitch;
5. Adjust the tension, guide block, and replace the guide block;
6. Conditioning tension.

Fault Nine: Cut Oblique
Cause of issue:
1. Sawtooth passivation;
2. The feed is too large;
3. Mistakes in tooth selection;
4. Guide wear and loosening;
5. The tension is too small;
6. The teeth have some teeth damaged;
7. The guide arm separation is too wide;
8. Tooth tips bond chips;
9. The saw belt is inclined.
Approach:
1. Replace the saw blade with a new one;
2. Conditioning feed rate;
3. Select teeth according to workpiece size;
4. Replace and adjust the guide block;
5. Conditioning tension;
6. Check the hardness of the workpiece and check whether the workpiece contains too hard slag;
7. Adjust the guide arm interval;
8. Check the brush or cutting fluid;
9. Adjust the saw band from scratch.

The above are the common faults and troubleshooting methods of the sawing machine that the sawing machine manufacturer will introduce to you today. If you want to know more about the troubleshooting of the sawing machine and the consultation of the sawing machine fault, you are welcome to contact us.