Abstract: A method for producing workpieces using a manufacturing installation includes obtaining a data set defining desired workpiece characteristics of workpieces. The method includes producing a first workpiece in first successive manufacturing steps using a first manufacturing machine. The method includes repeatedly recording first process parameters during the first successive manufacturing steps. The method includes mapping the first process parameter sequences onto the first successive manufacturing steps to obtain first sequential mapping data. The method includes inspecting the first workpiece using a metrology device to obtain actual first workpiece characteristics. The method includes comparing the actual first workpiece characteristics with the desired workpiece characteristics to determine deviations. The method includes determining second control commands based on the deviations, at least one of the first control commands and the data set, and the first sequential mapping data.

Abstract: 3D coordinates at first selected measurement points of a measurement object are determined using a first measurement arrangement. Surface normals at second selected measurement points of the measurement object are determined using a second measurement arrangement. Using the 3D coordinates and the surface normals, at least one of dimensional or geometric characteristics of the measurement object are determined. The second measurement arrangement includes a number of light sources and a first camera which is directed to the measurement object. A calibration data set represents individual direction dependent radiation patterns of the light sources. The surface normals are determined using the calibration data set and the 3D coordinates at the first selected measurement points.

Abstract: 3D coordinates at first selected measurement points of a measurement object are determined using a first measurement arrangement. Surface normals at second selected measurement points of the measurement object are determined using a second measurement arrangement. Using the 3D coordinates and the surface normals, at least one of dimensional or geometric characteristics of the measurement object are determined. The second measurement arrangement includes a number of light sources and a first camera which is directed to the measurement object. A calibration data set represents individual direction dependent radiation patterns of the light sources. The surface normals are determined using the calibration data set and the 3D coordinates at the first selected measurement points.

Abstract: A sheet gasket, particularly for internal combustion engines, consisting of at least one metal sheet forming a core which is cut to match the mating face, and elastomeric portions, particularly in bead form, which are bonded to the sheet around holes to be sealed. The gasket includes a single-piece elastomeric covering placed on part of the sheet surface to form localized sealing projections around the holes to be sealed. A related manufacturing method is also provided.

Abstract: A sheet gasket, particularly for internal combustion engines, consisting of at least one metal sheet forming a core which is cut to match the mating face, and elastomeric portions, particularly in bead form, which are bonded to said sheet around holes to be sealed. The gasket includes a single-piece elastomeric covering placed on part of the sheet surface to form localized sealing projections around the holes to be sealed. A related manufacturing method is also provided.

Abstract: A method is described of operating a ring spinning machine in which the traversing motion of the ring rail is generated by means of a heart-shaped disc. For the execution of specific functions which depend on the angular position of the heart-shaped disc, the period of rotation of the heart-shaped disc is first determined. Thereafter, a predetermined angular starting position of this heart-shaped disc is detected and, on the basis of the predetermined period of rotation, the time is then computed in each case from the occurrence of the angular starting position up to the occurrence of at least one further predetermined angular position which is associated with a respective function. On the expiration of the time associated with a respective angular position, the related function is executed.

Abstract: A cylinder head gasket for internal combustion engines has all-metal composite refractory seal around each of the cylinder openings and elastomeric seals around each of the liquid passages, the latter being symetrically disposed on opposite sides of the central plate. The refractory seals comprise ribbed sheet metal members disposed symetrically and having perimeters extending inwardly at each cylinder opening, and cover members reaching from one side and the other over the perimeters.

Abstract: A cylinder head gasket has outwardly open grooves formed in the compressible refractory body around the fluid passages to be sealed and sealing strips received in the grooves so that webs of the strips lying along the bottoms of the grooves are set back from the faces of the gasket while wings of the strips overhang these faces adjoining the grooves.