Special screw

Special screw flat tail, that is, there is a lot of material at the tail that cannot be cut off. General analysis has the following reasons.
One: The upper tooth groove of the elevation angle of the special screw is too wide and too deep, and the material is too much, which makes it impossible to discharge the material;
Second, the angle of screw velvet back angle repair is too small and the material is too much. In these two cases, the gold steel file is used to push the back angle in the elevation angle direction along the back angle angle direction to increase the back angle angle and add less material. Also, when adjusting the machine, the teeth are loosened to make the tip of the head enter less?? Some materials can also be used, for example, the feeding end is loose and the forming area is tight, which can also solve the tailing problem;
Three: control the length of the blank light nail is also very helpful to solve the problem of tailing.
Four: The tail tooth has a front, and the solution is the same as the tail. The key point is to control the length of the light nail to solve the front of the tail tooth.
Five: special screw thread heavy teeth: generally there are several situations: 1. when adjusting the machine, the tooth pattern is not well aligned. when the thread of the light nail is extruded, it is most likely to cause heavy teeth. try to move the movable plate up and down several times more, which can generally solve this problem; 2. When the dental plate is adjusted, the two pieces are not placed on the same surface, which will also cause uneven extrusion and easily cause heavy teeth. 3, the gap between the sliding surfaces of the moving plate machine is too large during machine adjustment, and the shaking during extrusion is too large, which is also easy to cause heavy teeth. 4. Too tight pressure in the feeding area during machine adjustment is also easy to cause heavy teeth. 5. The anti-slip teeth of the dental plate are carved too deep. At this time, the treatment is to smooth the burrs blocking the anti-slip teeth on both sides of the dental groove along the dental groove in the direction with a triangular groove to reduce friction; F, two pieces of dental plate chamfer width, depth is inconsistent. The above points can basically solve the defect of rubbing teeth, flat tail and heavy teeth. If it is not enough, it is necessary to consider sending the tooth replacement plate to the screw factory for rework and repair.