Your location:Band saw blade in the use of the process of breaking teeth phenomenon is very common, there are many reasons. In order to avoid this situation, we use our knowledge and years of accumulated experience to judge and analyze the causes of tooth collapse for users.
(1) The reasons caused by the problem of metal band sawing machine:
1. The metal band saw machine is affected by the vibration of the surrounding punching and forging equipment, and the fixed bolts of the band saw machine are loose, which affects the jitter of the saw frame, and the saw blade of the band saw machine is affected by the seismic power during the cutting process.
2. Lifting cylinder into the air, or due to poor oil quality, cylinder wear, control valve out of control and other reasons, resulting in the saw frame can not drop at a uniform speed, there are teeth.
3. The straightness of the driving wheel, the driving wheel and the guiding escapement can not reach the accuracy, the saw belt can not run in a straight line, and the cutting is either left or right and unstable up and down.
4. The motor belt is damaged for a long time and has aging and relaxation, and there may be intermittent loss of rotation when running, so that the saw belt also has intermittent weak sudden stop in cutting, resulting in the collapse of teeth.
5. The guide block of the sawing machine is worn after a long time of use, which may cause the saw belt to not cut vertically normally during the cutting process, so that the saw belt has unexpected adverse factors leading to the saw belt damage and scrap.
(2) Reasons caused by improper tooth selection:
1. Regardless of whether the sawn workpiece is solid or pipe, regardless of whether the sawtooth is suitable or not, the cutting is carried out at will, which can not avoid the phenomenon of tooth breakage and tooth pulling.
2. The selection of tooth spacing is wrong, and there will be teeth pulling when the big sawtooth cuts the material with small cross-section.
3. When sawing channel steel, round pipe, square pipe and other special-shaped materials, if the feed quantity is not properly mastered, it is more likely to break teeth, which should be noted.
(3) Reasons caused by improper operation:
1. The initial feed control is out of control, the saw belt has no slow and steady contact with the workpiece, and the saw belt quickly drops to impact cutting, resulting in the instantaneous load of the tooth tip.
2. Due to sloppy operation, the workpiece is not clamped or the clamping workpiece is not secure, the workpiece is loose or vibrating when sawing, and the sawtooth is passive under the action of uncertain external force.
3. The installation of the saw belt is not in place, and the back of the saw belt grinds the edge of the saw wheel, making the saw belt work abnormally.
4. The new saw belt is not normal running-in on high-speed cutting, and the feed is too large, resulting in broken teeth, this phenomenon is a more common problem in operation, should be paid more attention.
5. When the saw frame is lifted after sawing, the mutual extrusion of the workpiece is cut, and the extrusion is caused by the rising saw band.
6. The clamping method of the workpiece is not correct, and the workpiece is easy to move, resulting in tooth collapse.
(4) The following adverse factors may lead to the occurrence of tooth collapse
The new saw blade does not run together, the sawing feed is too large, the saw band teeth are installed in the opposite direction, the workpiece is cut with slag inclusion, hard points, etc., which will cause tooth collapse.
Posted by: SAWTX Sawworld http://www.sawtx.com
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