Abstract:
Earth-boring drill bits include a bit body, an element having an attachment feature bonded to the bit body, and a shank assembly. Methods for assembling an earth-boring rotary drill bit include bonding a threaded element to the bit body of a drill bit and engaging the shank assembly to the threaded element. In additional embodiments, a nozzle assembly for an earth-boring rotary drill bit may include a cylindrical sleeve having a threaded surface and a threaded nozzle disposed at least partially in the cylindrical sleeve and engaged therewith. Methods of forming an earth-boring drill bit include providing a nozzle assembly including a tubular sleeve and nozzle at least partially within a nozzle port of a bit body.
Abstract:
Geometric compensation techniques are used to improve the accuracy by which features may be located on drill bits formed using particle compaction and sintering processes. In some embodiments, a positional error to be exhibited by at least one feature in a less than fully sintered bit body upon fully sintering the bit body is predicted and the at least one feature is formed on the less than fully sintered bit body at a location at least partially determined by the predicted positional error. In other embodiments, bit bodies of earth-boring rotary drill bits are designed to include a design drilling profile and a less than fully sintered bit body is formed including a drilling profile having a shape differing from a shape of the design drilling profile. Less than fully sintered bit bodies of earth-boring rotary drill bits are formed using such methods.
Abstract:
A fixed-cutter drill bit (100) is optimized so that cutter torques are evenly distributed not only during drilling of homogeneous rock, but also in transitional formations.
Abstract:
Ein optisches Überwachungssystem dient zur Umgebungsüberwachung mit einer Überwachungsvorrichtung, deren Sicht- oder Scanfeld durch eine Linse erfasst ist, und einer Schutzscheibe (112), die die Linse vor Niederschlag schützt und wenigstens das Sicht- oder Scanfeld der Überwachungsvorrichtung abdeckt. Um zu vermeiden, dass die Signalqualität der Überwachungsvorrichtung durch Niederschlag auf der Schutzscheibe beeinträchtigt wird, wird vorgeschlagen, dass die Schutzscheibe (12; 112; 218; 318) mit wenigstens einem Ultraschall-Transducer (10) akustisch gekoppelt ist. Das optische Überwachungssystem kann in das Steuerungssystem eines Fahrzeuges zum autonomen Fahren eingebunden sein, wobei sich insgesamt eine erhöhte Sicherheit des Steuerungssystems erreichen lässt.
Abstract:
Cutting elements include a volume of superabrasive material. The volume of superabrasive material comprises a front-cutting surface, an end-cutting surface, a cutting edge, and lateral side surfaces extending between and intersecting each of the front-cutting surface and the end-cutting surface. An earth-boring tool may comprise a bit body and at least one cutting element attached to the bit body. Methods of forming cutting elements comprise forming a volume of superabrasive material comprising forming a front-cutting surface, an end-cutting surface, a cutting edge, and lateral side surfaces extending between and intersecting each of the front-cutting surface and the end-cutting surface. Methods of forming earth-boring tools comprise forming a cutting element and attaching the cutting element to an earth-boring tool.
Abstract:
Earth-boring drill bits include a bit body, an element having an attachment feature bonded to the bit body, and a shank assembly. Methods for assembling an earth-boring rotary drill bit include bonding a threaded element to the bit body of a drill bit and engaging the shank assembly to the threaded element. In additional embodiments, a nozzle assembly for an earth-boring rotary drill bit may include a cylindrical sleeve having a threaded surface and a threaded nozzle disposed at least partially in the cylindrical sleeve and engaged therewith. Methods of forming an earth-boring drill bit include providing a nozzle assembly including a tubular sleeve and nozzle at least partially within a nozzle port of a bit body.
Abstract:
Geometric compensation techniques are used to improve the accuracy by which features may be located on drill bits formed using particle compaction and sintering processes. In some embodiments, a positional error to be exhibited by at least one feature in a less than fully sintered bit body upon fully sintering the bit body is predicted and the at least one feature is formed on the less than fully sintered bit body at a location at least partially determined by the predicted positional error. In other embodiments, bit bodies of earth-boring rotary drill bits are designed to include a design drilling profile and a less than fully sintered bit body is formed including a drilling profile having a shape differing from a shape of the design drilling profile. Less than fully sintered bit bodies of earth-boring rotary drill bits are formed using such methods.
Abstract:
Eine Vorrichtung (1) zur Beseitigung von Ablagerungen und/oder Niederschlag auf einem Substrat (10, 110) weist mindestens einen mit dem Substrat (10, 110) durch eine Verbindungsschicht (30) verliersicher verbundenen Transducer (20, 120) auf, wobei die Verbindungsschicht (30) zwischen dem Substrat (10, 110) und dem Transducer (20, 120) angeordnet ist. Es ist gemäß der Erfindung vorgesehen, dass die Verbindungsschicht (30) ein Verbindungsmaterial (31) und ein Füllmaterial (32) aufweist. Ferner ist ein optisches System zur Umgebungsüberwachung mit einer optischen Überwachungsvorrichtung mit einer Linse und/oder einem Sichtfenster und der obenstehenden Vorrichtung vorgesehen, wobei die Linse oder das Sichtfenster durch das Substrat gebildet ist.
Abstract:
Cutting elements include a volume of superabrasive material. The volume of superabrasive material comprises a front-cutting surface, an end-cutting surface, a cutting edge, and lateral side surfaces extending between and intersecting each of the front-cutting surface and the end-cutting surface. An earth-boring tool may comprise a bit body and at least one cutting element attached to the bit body. Methods of forming cutting elements comprise forming a volume of superabrasive material comprising forming a front-cutting surface, an end-cutting surface, a cutting edge, and lateral side surfaces extending between and intersecting each of the front-cutting surface and the end-cutting surface. Methods of forming earth-boring tools comprise forming a cutting element and attaching the cutting element to an earth-boring tool.
Abstract:
Cutting elements include a volume of superabrasive material. The volume of superabrasive material comprises a front-cutting surface, an end-cutting surface, a cutting edge, and lateral side surfaces extending between and intersecting each of the front-cutting surface and the end-cutting surface. An earth-boring tool may comprise a bit body and at least one cutting element attached to the bit body. Methods of forming cutting elements comprise forming a volume of superabrasive material comprising forming a front-cutting surface, an end-cutting surface, a cutting edge, and lateral side surfaces extending between and intersecting each of the front-cutting surface and the end-cutting surface. Methods of forming earth-boring tools comprise forming a cutting element and attaching the cutting element to an earth-boring tool.