Publish Time: 2024-05-17 Origin: Site
Rolling machine cylinder and cone cylinder workpiece can be viewed as a cylinder and cone workpiece bus around the same plane of the rotary centre line 360 degrees into, cylinder workpiece bus and rotary centre line parallel, cone workpiece bus and rotary centre line inclined.
Rolling cylinders and cones on the coiler are based on the principle of three-point bending, the rolling process has the following three main steps. First of all, the workpiece will be fed into the roll-type coiler work roll, a roll in the upper part of the workpiece, known as the upper roll, two in the lower part of the workpiece, known as the lower roll, which is a three-roller coiler: four-roller coiler has three rolls in the lower part of the workpiece, one in the upper roll of the same plumb plane, known as the middle and lower rolls, and the other two in the upper roll on both sides of the roll, known as the side of the roll, the upper roll can be with the side of the roll and the middle and lower rolls in any two of the rolls of the workpiece to be bending.
The second step is the work roll for the feeding movement, that is, three-point bending, some coiler is the upper roller for the press down feed, there is the lower roller or side roller for the upward feeding movement, for the convenience of the narrative, according to the principle of relative motion, the workpiece and the lower roller or side rollers as a stationary, the upper roller for the press down movement: the roll of cylindrical workpieces on the upper roller when the lower roller is pressed down parallel to the lower roller, the roll of tapered workpieces on the upper roller pressed down and the lower roller inclined: the more the amount of press down The more the amount of pressure down, the greater the curvature of the workpiece in contact with the upper roller bus and nearby curvature; the third step is to let the workpiece rotate through the rotary movement of the work roller, while ensuring that the amount of pressure down on the rollers remains unchanged, so that each bus of the workpiece has the same curvature or curvature distribution, become a round cylinder and conical cylinder.
There are many ways to roll a cone with a roller-type plate rolling machine, which are applicable to different workpieces and have their own characteristics. No matter what method is used, it is necessary to ensure that in the process of rolling, the bus of the workpiece coincides with the bus of the upper roll.
The cone simple underfeed is a fan-shaped steel plate. In the cylindrical work rolls in the coiler rolled cone, to ensure that in the process of rolling. Workpiece bus and the upper roll of the bus coincide, fan-shaped steel plate in the work of the movement between the rolls can be seen as a workpiece bus at each point in the direction perpendicular to the work of the roll axis in the uniform motion (cylindrical work roll of the main drive unit of the rotary movement can be achieved that movement) and the workpiece around the plumbline through their own bus at a certain point on the rotary motion of the combined movement, so that the big head to go faster or slower small head to go, which need to give the fan-shaped steel plate In addition to apply a torque to overcome the friction between the workpiece and the work roll, which is the key to the roll cone, the workpiece around the plumb line through its own bus on the point of the rotary motion requires the smallest torque.