A block has a front face with a first surface of non-planar roughness including at least 10% and not more than 90% of the area of the front face. The front face includes a second surface that is even and generally planar, with at least 10% and not more than 90% of the area of the front face. In one example, the first surface is a split face, and the second surface is a burnished split face. In another example, the first surface is a molded face, and the second surface is burnished. Methods of making a block include molding, curing, in some implementations splitting, and then burnishing. Walls can be constructed from these blocks.

A block has a front face with a first surface of non-planar roughness including at least 10% and not more than 90% of the area of the front face. The front face includes a second surface that is even and generally planar, with at least 10% and not more than 90% of the area of the front face. In one example, the first surface is a split face, and the second surface is a burnished split face. In another example, the first surface is a molded face, and the second surface is burnished. Methods of making a block include molding, curing, in some implementations splitting, and then burnishing. Walls can be constructed from these blocks.

A finishing device includes a finishing belt, a finishing belt holding device, a first drive configured to rotationally drive a workpiece about a workpiece axis, and a second drive configured to oscillate the workpiece and the finishing belt relative to another along the workpiece axis. The finishing belt holding device has a holding section configured to hold a portion of the finishing belt. The portion has an active area configured to finish a circumferential workpiece surface. The portion extends in a plane which is vertical when referring to the direction of gravity and extends in a horizontal direction when referring to the direction of gravity and when viewing in the running direction of the finishing belt. The finishing device includes a workpiece holding device defining a workpiece holding axis which is vertical when referring to the direction of gravity.

A method for cooling a workpiece that is typically metallic in nature that is undergoing a grinding operation by spraying liquid carbon dioxide at the workpiece. The liquid carbon dioxide is directed at the workpiece and form a carbon dioxide snow which will provide cooling and improve the efficiency of the grinding operation. Alternatively, the liquid carbon dioxide can be sprayed onto the back surface of the abrasive belt which will also provide the requisite cooling but help the belt from delaminating.

A method for cooling a workpiece that is typically metallic in nature that is undergoing a grinding operation by spraying liquid carbon dioxide at the workpiece. The liquid carbon dioxide is directed at the workpiece and form a carbon dioxide snow which will provide cooling and improve the efficiency of the grinding operation. Alternatively, the liquid carbon dioxide can be sprayed onto the back surface of the abrasive belt which will also provide the requisite cooling but help the belt from delaminating.

Driver support assemblies to work in concert with a setup assembly are provided. Setup assemblies to work in concert with a driver support assembly and a cutting assembly are provided. Cutting assemblies configured to work in concert with a driver support assembly are provided. Driver tip cutting assemblies are provided. Methods for cutting the tip of a driver shaft are provided.

Driver support assemblies to work in concert with a setup assembly are provided. Setup assemblies to work in concert with a driver support assembly and a cutting assembly are provided. Cutting assemblies configured to work in concert with a driver support assembly are provided. Driver tip cutting assemblies are provided. Methods for cutting the tip of a driver shaft are provided.

The invention relates to a method for operating a machine, in particular a grinding machine, comprising the steps of: detecting a workpiece to be machined and setting various setting values of the machine, performing machining of the workpiece, detecting a first actual value and a second actual value during or after performance of the machining, wherein the first actual value is assigned a higher prioritization than the second actual value, comparing the first actual value with a first set value range and the second actual value with a second set value range, and changing the setting values of the machine such that the actual values meet the assigned target value range according to the prioritization.

The invention relates to a method for operating a machine, in particular a grinding machine, comprising the steps of: detecting a workpiece to be machined and setting various setting values of the machine, performing machining of the workpiece, detecting a first actual value and a second actual value during or after performance of the machining, wherein the first actual value is assigned a higher prioritization than the second actual value, comparing the first actual value with a first set value range and the second actual value with a second set value range, and changing the setting values of the machine such that the actual values meet the assigned target value range according to the prioritization.

A workpiece passes through a belt grinder for grinding and structuring a flat workpiece in a predefined direction of passage (P1) past at least one machining area of a structuring device. The structuring device comprises at least one endless grinding belt which is guided over deflection elements in at least one direction of circulation (P3) and the width of the which extends substantially across the working width of the belt grinder, and is guided over deflection elements, the longitudinal axes of which are oriented transversely to the direction of passage (P1) of the workpiece. Furthermore, the structuring device comprises an endless press-on belt 220 which is configured and arranged such that it exerts a force from the inside on the grinding belt in a press-on area, wherein the endless press-on belt is drivable with the aid of a drive unit. The direction of circulation (P2) of the press-on belt runs, at least in the press-on area, transversely to the direction of circulation (P3) of the grinding belt. The structuring device and the transport unit are configured and arranged such that the workpiece guided past the structuring device comes into contact with the machining area of the grinding belt. The structuring device comprises a control unit which controls the drive unit of the press-on belt such that the drive unit selectively drives the endless press-on belt in a first direction of circulation (P2) or in a second direction of circulation that is opposite to the first direction of circulation (P2).