Abstract: A honing machine (100) for carrying out honing operations on boreholes, oriented orthogonally with respect to one another, in a workpiece (102), in particular for honing processing of cylinder boreholes and a bearing gate borehole in a cylinder crank casing, comprises a machine base (110) and a round table (130) which is arranged on the machine base and which can rotate about a vertical round table axis (134) and has a plurality of workpiece receptacles which are arranged offset with respect to one another in a circumferential direction at a radial distance from the round table axis, in such a way that a workpiece which is held in a workpiece receptacle can be transported successively to different workstations (140, 150, 160, 170) of the honing machine by rotating the round table.

Abstract: In the case of a method for the material-removing fine machining of a workpiece surface of a workpiece, in particular for the honing or finishing of workpiece portions having substantially rotationally symmetrically curved workpiece surfaces, at least one fine machining tool machines the workpiece surface and, by means of a measuring system, a measurement of the workpiece surface is performed. In this case, at at least one measuring position, radar radiation is directed onto the workpiece surface, and the radar radiation reflected from the workpiece surface is acquired and evaluated for the purpose of determining at least one surface measurement value.

Abstract: In a method for the finishing of a crankshaft bearing bore in a cylinder crankcase of an internal combustion engine, starting from a prepared crankshaft bearing bore, a finished crankshaft bearing bore is produced with a prescribable desired size, a prescribable desired structure of the bore inner surface and a prescribable desired position of the bore axis. The prepared crankshaft bearing bore is first finished with at least one finishing tool with a geometrically defined cutting edge and then the honing of the crankshaft bearing bore is carried out. In a final finishing operation with a geometrically defined cutting edge immediately preceding the honing, an allowance of at least 0.4 mm is removed, and the honing tool is introduced into the bore coaxially in relation to the desired position of the bore axis and moved within the bore, an allowance of at least 0.08 mm being removed during the honing.

Abstract: A pressing device (50) for pressing cutting means onto circumferential surfaces (12) of substantially cylindrical workpiece portions (13) during a finishing operation is provided for pressing the cutting means onto a circumferential surface with a pressing force over a contact angle. The pressing device is steplessly adaptable for the machining of workpiece portions of differing diameters that have a diameter difference of at least 0.1 mm.

Abstract: According to a method for the fine machining of internal surfaces of bore holes in tools by fine boring and subsequent honing, the following steps are executed: Fine boring of at least one bore hole (131) in a tool (130) by means of a fine boring tool (128) of a fine boring device (120) for the creation of a fine bored hole; Transfer of the tool to a machining position of a honing device (140) for the machining of the fine bored bore hole by means of a honing tool (148A) of the honing device; Measurement of the fine bored bore hole with one of the measurement devices (160) allocated to the honing device in the machining position for the creation of at least one bore hole measurement signal representing the properties of the fine bored bore hole. The fine boring device is controlled subject to the bore hole measuring signal.

Abstract: In a method for the finishing of a crankshaft bearing bore in a cylinder crankcase of an internal combustion engine, starting from a prepared crankshaft bearing bore, a finished crankshaft bearing bore is produced with a prescribable desired size, a prescribable desired structure of the bore inner surface and a prescribable desired position of the bore axis. The prepared crankshaft bearing bore is first finished with at least one finishing tool with a geometrically defined cutting edge and then the honing of the crankshaft bearing bore is carried out. In a final finishing operation with a geometrically defined cutting edge immediately preceding the honing, an allowance of at least 0.4 mm is removed, and the honing tool is introduced into the bore coaxially in relation to the desired position of the bore axis and moved within the bore, an allowance of at least 0.08 mm being removed during the honing.

Abstract: A method for fine boring of internal surfaces of bore holes in work pieces as well as a machining plant for executing this method. The fine machining, fine boring, and honing include fine boring of a bore hole of a work piece using a fine boring tool; transferring the work piece into a honing device; measuring the fine bored bore hole with a measuring device associated with the honing device; and controlling the operation of the fine boring device depending on the bore hole measuring signal received by the measuring device. An output fine boring machining, arranged directly upstream of the transfer, is dimensioned as semi-finishing machining, and is carried out with a fine boring tool having at least one adjustable cutting edge. The position of the adjustable cutting edge is controlled depending on the bore hole measuring signal.

Abstract: In the case of a method for the material-removing fine machining of a workpiece surface of a workpiece, in particular for the honing or finishing of workpiece portions having substantially rotationally symmetrically curved workpiece surfaces, at least one fine machining tool machines the workpiece surface and, by means of a measuring system, a measurement of the workpiece surface is performed. In this case, at at least one measuring position, radar radiation is directed onto the workpiece surface, and the radar radiation reflected from the workpiece surface is acquired and evaluated for the purpose of determining at least one surface measurement value.

Abstract: A pressing device (50) for pressing cutting means onto circumferential surfaces (12) of substantially cylindrical workpiece portions (13) during a finishing operation is provided for pressing the cutting means onto a circumferential surface with a pressing force over a contact angle. The pressing device is steplessly adaptable for the machining of workpiece portions of differing diameters that have a diameter difference of at least 0.1 mm.

Abstract: A device for the finish machining of circumferential surfaces of substantially rotationally symmetrical workpiece portions on workpieces, such as crankshafts and camshafts, which have a workpiece axis and several workpiece portions arranged in offset manner along the workpiece axis, has a plurality of finishing units, each of the finishing units having at least one finishing arm with a pressing device for pressing cutting media onto the circumferential surface of a workpiece portion and a finishing unit is associated with each workpiece portion to be machined in a machining phase. The finishing units are subdivided into a first group of first finishing units and a second group of second finishing units, axially directly adjacent finishing units being alternately associated with the first group and the second group and the first group of first finishing units is angularly displaced with respect to the workpiece axis relative to the second group of second finishing units.

Abstract: A honing installation for honing workpieces comprises a plurality of work stations, each work station being configured for performing at least one working step on a workpiece and at least part of the work station is set up as a honing station for performing at least one honing operation on a workpiece. The honing installation also comprises a conveyor system for conveying workpieces to and from work stations. There is also a control device for controlling the honing installation. Each of the work stations is directly connected to the conveyor system. This configuration allows a flexible control of the honing process.

Abstract: A honing installation for honing workpieces comprises a plurality of work stations, each work station being configured for performing at least one working step on a workpiece and at least part of the work station is set up as a honing station for performing at least one honing operation on a workpiece. The honing installation also comprises a conveyor system for conveying workpieces to and from work stations. There is also a control device for controlling the honing installation. Each of the work stations is directly connected to the conveyor system. This configuration allows a flexible control of the honing process.

Abstract: A honing method proposes that using an arbor honing tool a remachining be carried out using the same tool either simultaneously or following onto arbor honing, in which the ratio of the stroke speed to the rotational speed of the tool is significantly increased. This leads to a cross-structure of the honing tracks allowing a better oil holding capacity.

Abstract: When honing working cylinders for reciprocating piston-type machines or engines, e.g. internal combustion engines, unlike in conventional honing methods working takes place with a much higher axial speed than circumferential speed. This gives a mark pattern, which admittedly differs significantly from the axial direction, but runs more in the axial direction than in the circumferential direction. On the dominant mark pattern can be superimposed in a finishing operation a honing mark pattern, which has much finer honing marks and creates a plateau surface with diamond-shaped islands pointing in the working direction of the piston. A thus treated working cylinder, in the case of limited wear, leads to much lower oil consumption on the part of the engines.

Abstract: A method and apparatus for the superfinishing of workpieces, particularly workpieces driven in rotary manner with the aid of a superfinishing tool driven in rotary manner proposes that although the superfinishing tool is driven, it is held in fixed manner. Infeeding takes place solely through the infeeding movement of the workpiece to be worked, which leads to a greater rigidity of the apparatus and at the same time a very simple construction.

Abstract: A honing tool (1) simultaneously serving as a measuring mandrel has, apart from honing ledges (7), measuring and/or guide ledges (10), which are mounted in radially adjustable manner on the tool body (2) for increasing the measuring precision and/or for adjusting to different nominal dimensions of the hole. Thus, e.g. prior to the end of the machining of a hole, the measuring ledges (10) can be infed again and/or the desired measured value can be recalibrated by means of a calibration hole.

Abstract: A method for machining a workpiece bore in a single working stroke utilizes a honing tool with a preset honing surface fixed in a radial position corresponding to the desired end size of the bore during the work cycle and measures the finished project for calibration and repositioning of the work surface prior to the honing of a second bore during a second work cycle.

Abstract: A method and device for honing a workpiece surface to be machined to provide a finished size and surface configuration comprising a honing tool with adjustable honing elements, the elements having a cutting zone and a calibrating zone, and also comprising a guide element with a surface sized to the finished size of the workpiece surface such that on the cutting stroke of the tool the cutting zone performs the cut and the tool is guided by the movement of the calibrated zone through the guide element and the honed surface.

Abstract: A honing tool for machining a workpiece bore (40) in one working stroke with honing coatings (22) set in fixed manner to the desired size of the bore, has on a non-readjustable part of the tool body (12) and preferably in the vicinity of a guide zone (28), air measuring nozzles (33). During the tool return stroke, these nozzles are subject to an action through the bore and measure the final size of the latter following the working zone (24). Optionally a readjustment can be automatically initiated as a function of the result.