(1) The factors formed by the doubt of the metal band sawing machine:

1. The metal band sawing machine is affected by the sensation of the surrounding punching and forging equipment, and the loosening of the band sawing machine's fixing bolts affects the saw frame tremor, and the band sawing machine suffers from the impact of the blasting force during the cutting process.

2. The lifting cylinder enters the air, or due to the poor quality of the oil, the wear of the cylinder, the operation valve is out of control and other factors, the saw frame can not be reduced at a uniform speed, and it shows teeth.

3. The straightness of the three points of the driving wheel, driven wheel and guide escapement mechanism can not reach the precision, the saw band can not work in a straight line, showing unstable cutting either left or right and up and down.

4. The motor belt is damaged for a long time and shows aging and relaxation. During operation, it may show intermittent loss of rotation, so that the saw belt also shows an intermittent weak sudden stop during cutting, and the teeth are broken.

5. The guide block of the sawing machine shows wear after long-term use, which may make the saw band not cut normally and straight during the cutting process, so that the saw band shows unexpected bad elements and the saw band is damaged and scrapped.



(2) Elements formed due to improper tooth selection:

1. Regardless of whether the workpiece being cut is solid or pipe, regardless of whether the saw teeth are suitable or not, the cutting is done at will, which can not prevent the formation of a broken tooth.

2. Mistakes in the selection of tooth pitch, data with large zigzags and small cross-sections will also be displayed with pulling teeth.

3. When sawing channel steel, round tube, square tube and other special-shaped materials, if the feed rate is not properly grasped, it is the simplest to show the chipping, and special attention should be paid.



(3) Elements formed due to improper operation:

1. The initial feed control is out of control, the saw band does not contact the workpiece slowly and steadily, the saw band quickly reduces the impact cutting, and the tooth tip is overloaded and collapses in an instant.

2. Due to sloppy actions during operation, the workpiece is not clamped or the clamped workpiece is not reliable. The workpiece is loose or oscillating during sawing, and the saw teeth are forced to beat under the action of uncertain external forces.

3. The saw band of the device is not in place, and the back of the saw band rubs the edge of the stop of the saw wheel to make the saw band work abnormally.

4. The new saw band does high-speed cutting without normal running-in, and the feed rate is too large, forming a broken tooth. This kind of scene is a question of comparison throughout the operation, and you should pay more attention to it.

5. When the saw frame is lifted at the end of sawing, the jammed workpieces squeeze each other, bumping into the rising saw belt to form teeth.

6. The clamping method of the workpiece is not correct, the workpiece simply moves, resulting in chipping.



(4) The following undesirable factors may cause the occurrence of tooth collapse

The new saw blade does not run in, the sawing feed is too large, the saw belt teeth are reversed, and the workpiece to be cut has slag inclusions, hard spots, etc., all of which will form chipping. The band saw blade is very widespread in the process of use, and there are many elements. In order to prevent this situation, we use professional knowledge and many years of accumulated experience to discriminate and analyze the elements that form the teeth.