Systems and methods of providing run-time quality control and monitoring of a single or multiple sequencing runs are provided herein. In some embodiments, the run-time system includes or is in communication with a processor capable of determining various types of run-time information relating to the quality, progress, etc. of various sequencing runs. In some embodiments, the system can also be in communication with a user interface, for example, a GUI, capable of representing and communicating various types of information to a user regarding the quality of the individual or multiple runs, the functioning of the instrument, an error event, etc. Additionally, the system can capable of receiving actionable information from a user via the GUI thereby allowing the user to terminate or repeat various sequencing steps in a particular run, terminate a entire run, terminate all runs, allow a run to proceed, etc.

A grinding apparatus grinds a workpiece by rotating the workpiece held by main spindles and a grinding wheel held by a wheel spindle, and by relatively moving the grinding wheel toward and away from the workpiece. The grinding apparatus includes a first detection unit that detects a rotational phase of the workpiece; a second detection unit that detects a grinding resistance moment at a grinding point between the grinding wheel and the workpiece, or detects a drive current of a rotary drive unit of the workpiece or a rotary drive unit of the grinding wheel; a storage unit that stores the grinding resistance moment or the drive current in a manner associated with the rotational phase; and a determination unit that determines a slip between the workpiece and the main spindles based on the grinding resistance moment or the drive current at a current rotational phase, and on the grinding resistance moment or the drive current at the same phase as the current rotational phase of a previous time.

A grinding apparatus grinds a workpiece by rotating the workpiece held by main spindles and a grinding wheel held by a wheel spindle, and by relatively moving the grinding wheel toward and away from the workpiece. The grinding apparatus includes a first detection unit that detects a rotational phase of the workpiece; a second detection unit that detects a grinding resistance moment at a grinding point between the grinding wheel and the workpiece, or detects a drive current of a rotary drive unit of the workpiece or a rotary drive unit of the grinding wheel; a storage unit that stores the grinding resistance moment or the drive current in a manner associated with the rotational phase; and a determination unit that determines a slip between the workpiece and the main spindles based on the grinding resistance moment or the drive current at a current rotational phase, and on the grinding resistance moment or the drive current at the same phase as the current rotational phase of a previous time.

The present disclosure relates to abrasives surfaces located on an outer diameter of a grinding wheel to provide grinding characteristics of both coarse and fine abrasive textures. The grinding wheel has a coarse abrasive portion located at one disclosure uses a transition band formed at an interface between the abrasive surfaces, that has an abrasive coating with a gradual change in texture from a coarse surface to a fine surface.

The present disclosure relates to abrasives surfaces located on an outer diameter of a grinding wheel to provide grinding characteristics of both coarse and fine abrasive textures. The grinding wheel has a coarse abrasive portion located at one disclosure uses a transition band formed at an interface between the abrasive surfaces, that has an abrasive coating with a gradual change in texture from a coarse surface to a fine surface.

A method for correcting non-rigid thin-walled tubular elements having geometric deficiencies, wherein, following correction, the tubular elements may perform over a wide range of pressure and temperatures, for example as a rocket motor beaker, from about −70 C to about 1000 C. Correction is required to remove asperities, maximize cylindricity, squaring a forward end wall and a rearward end wall, so that the forward end wall of the tube product may be fitted, bonded and sealed to a circular planar element using a labyrinth-joint closure. The method provides uniformity so that both the tubular elements and the circular planar elements are interchangeably uniform in size, shape and performance, and may be readily assembled into non-rigid thin-walled tube products.

A method for correcting non-rigid thin-walled tubular elements having geometric deficiencies, wherein, following correction, the tubular elements may perform over a wide range of pressure and temperatures, for example as a rocket motor beaker, from about −70 C to about 1000 C. Correction is required to remove asperities, maximize cylindricity, squaring a forward end wall and a rearward end wall, so that the forward end wall of the tube product may be fitted, bonded and sealed to a circular planar element using a labyrinth-joint closure. The method provides uniformity so that both the tubular elements and the circular planar elements are interchangeably uniform in size, shape and performance, and may be readily assembled into non-rigid thin-walled tube products.

A machine tool for multiple working for material removal from surfaces of bodies including a working station in which a plurality of rotary tools are positioned around a feed trajectory of said bodies; and guide means in which the bodies to be worked are made to translate one after another along said feed trajectory with a predetermined orientation position. At least one pair of rotary tools of said working station, intended to interact with the surfaces to be worked, inside slits in said bodies, in combination with each other and with guide means provided with partitions, help to keep said bodies in position during their related transit through said working station.

A machine tool for multiple working for material removal from surfaces of bodies including a working station in which a plurality of rotary tools are positioned around a feed trajectory of said bodies; and guide means in which the bodies to be worked are made to translate one after another along said feed trajectory with a predetermined orientation position. At least one pair of rotary tools of said working station, intended to interact with the surfaces to be worked, inside slits in said bodies, in combination with each other and with guide means provided with partitions, help to keep said bodies in position during their related transit through said working station.

A grinding machine for external cylindrical grinding of hollow shafts may include at least one grinding disc, at least one support disc, and at least two centrings for a face-side fixing of a hollow shaft. At least one of the at least two centrings may be configured as a point. A ruler may be arranged to adjust and hold a position of the hollow shaft during a grinding operation. A rotation axis of the at least one grinding disc and of the at least one support disc may be arranged parallel to one another and define a plane. A rotation axis of the hollow shaft to be ground may extend outside of the plane by a distance of a>12 mm.