Rolling Head reasonable or not is a key issue in the roll forming
        1, roll head tilt
        Also known as forming angle, the main angle and tilt angle, that is, the center line and rolled the first model (main axis) angle between the general said with a.
        Head roll angle directly affects Roll forming machine the size of the diameter and the rolling roller head pressure is an important process parameters. a small head diameter and volume were rolling on the big, rolling when the mud pressure and larger than the dense green body. If a is too small, difficult to roll when the roll head and mud, not even the shape of air emission defects. Excessive pressure stripping is difficult green body, easily crushed model. a large head diameter is smaller roller, mud easily, suffer less stress. If too much is apt to cause a sticky roller head, green body forming the bottom of injustice, body density is not enough. In actual production, the size of a roll tilt angle is based on the size of product shapes, mud properties, rolling head and spindle speed so different a different angle. General product diameter, and angle can be bigger; products of small diameter, angle can be smaller. Deep-shaped product can be used cylindrical roller head (ie, no inclination). General inclination by 15 degrees -30 degrees, and some can reach 45 degrees. If the center of roller cone angle of the first to express
The Center is rolling cone angle of 120 degrees -150 degrees generally.
        After the first roll angle to determine, Roll former largely determine the size of roll head, but in the actual design of the first roll, the roll center line of the first vertex models often do not align the center line, and to shift 1-3mm. Because the roll center of the first peak can be seen as a small point, in this little point, its rotation speed is almost zero, so that blank pressure on small, green body are more loose, so that the bottom center of the surface not only green body, burning After the grievance. To avoid this phenomenon, it can be rolled into a curved head center vertex processing, but also the need to roll a certain distance from the first axis translation. This treatment will not only address the bottom center of the green body roll occurs the first trace of the defects, and when the roller head several times due to wear and can continue to use after processing. When the deep-shaped products should not use a dip in the roller head, the roll center line with the model head is parallel to the centerline. Then, roll diameter, the size of the head and face bad body can not be smaller than the radius of the bottom, or center of the bad physical shape is not good, but not more than a bad bottom radius of 120% of the body. Too large, will have difficulties and too much pressure sludge problems