Abstract: A device for grinding a cylinder surface is provided, the cylinder being one of at least three substantially parallel, axially offset cylinders. The device includes a central body member and at least three supporting elements, each of the supporting elements being associated with a corresponding one of the cylinders, the supporting elements supporting the central body member relative to the cylinders. One or more belt grinder assemblies are provided, each belt grinder assembly including a belt grinder and a device for mounting the belt grinder on the central body member. Each belt grinder includes a contact wheel, an abrasive belt, extending around the contact wheel, and a device for supporting the contact wheel relative to a one of the cylinders to be ground. The supporting device includes a device for adjusting a position of the contact wheel relative to the one of the cylinders to be ground.

Abstract: The grinder has a frame (6) movable on rollers (8) on which is fitted a grinding device (18) drivable by a motor (84). In order to simplify the grinder and its application to a roll (4) to be treated, the rollers (8) are designed to lower the frame (6) on a scraper (10) or on a rail (56) of a scraper device (2) associated with the roll (4), which rail replaces the scraper (10). The frame (6) has a supporting roller (14) fitted on an adjustable holder (12) which is laterally supported on a bearer (16) for the scraper (10).

Abstract: A process that includes a precision grinding and subsequent finish grinding is preceded by an initial grinding phase in which a grinding belt that is pressed with predetermined pressure onto the outer surface of a preheated cylinder to be processed within a clearance X and X'. The clearance is adjustable by an adjusting device that adjusts the clearance between a profile plate and a contact roll in a manner such that a coating on the cylinder surface is uniformly removed independently of the surface geometry. Following the initial grinding, the pressure applied by the grinding belt is varied in a first grinding phase until a fixed connection between the profile plate and the contact roll is established. Such a method assures the uniform distribution of heat and thus the uniform expansion of the cylinder surface. Consequently, the cylinder can be machined with greater accuracy.

Abstract: A process that includes a precision grinding and subsequent finish grinding is preceded by an initial grinding phase in which a grinding belt that is pressed with predetermined pressure onto the outer surface of a preheated cylinder to be processed within a clearance X and X'. The clearance is adjustable by an adjusting device that adjusts the clearance between a guide rod and a contact roll in a manner such that a coating on the cylinder surface is uniformly removed independently of the surface gemoetry. Following the initial grinding, the pressure applied by the grinding belt is varied in a first grinding phase until a fixed connection between the guide rod and the contact is established. Such a method assures the uniform distribution of heat and thus the uniform expansion of the cylinder surface. Consequently, the cylinder can be machined with greater accuracy.