Abstract: Blind hole locating systems, devices, and methods are provided. A method includes installing a guide screw into a blind hole of a first material and assembling a drill guide apparatus, which includes removably coupling a drill guide to a guide strap and inserting a guide pin through a drill guide hole of the drill guide so that a length of the guide pin protrudes past the guide strap. The method also includes placing the drill guide apparatus on the first material so that a portion of a length of the guide pin protrudes into the guide screw, securing a portion of the guide strap to the first material, and removing the guide pin while the guide strap remains secured and placing a second material over the blind hole (including the guide screw in the blind hole) and between the guide strap and the first material.

Abstract: A drill of the present invention includes: a drill main body; a plurality of convex-arc cutting edges which are formed on a tip side of the drill main body from an outer periphery of the drill main body to a chisel edge provided near to a rotational axis; second faces which are each formed in an approximately band shape and are each formed along each of the convex-arc cutting edges on a back side of the convex-arc cutting edge in the rotational direction; third faces which are each formed to be continuous with a back side of each of the second faces in the rotational direction; and fourth faces which are each formed to be continuous with a back side of each of the third faces in the rotational direction.

Abstract: A milling tool with a disk- or strip-shaped base body, which can be driven around an axis of rotation, and several cutting inserts arranged along the outer circumference of the base body on opposite sides from one another, wherein the cutting inserts, viewed in the axial direction, overlap one another. The invention also relates to a tangential cutting insert for a milling tool of the above-mentioned type, with two side surfaces, through which a fastening opening extends, and two face ends, wherein cutting edges are formed at the junction of the front faces to the side surfaces, wherein the fastening opening is positioned eccentrically.

Abstract: A cutting tool rotatable about a tool axis, having a cutting body and at least one indexable, single-sided cutting insert removably secured in an insert receiving pocket of the cutting body. The cutting insert has opposing upper and lower surfaces with a peripheral side surface extending therebetween and a central axis passing therethrough. First and second clamping bores extend between and open out at the upper and lower surfaces. First and second primary cutting edges are formed at the intersection of the upper surface and the peripheral side surface. The lower surface includes first and second annular recesses communicating with the first and second clamping bores, respectively, and first and second recess channels extending from the first and second clamping bores, respectively, to the peripheral side surface. The first and second recess channels extend parallel to a longitudinal first plane containing the central axis.

Abstract: Provided are a cutting insert and a tool holder on which the cutting insert is provided. The cutting insert includes a circular upper surface, a circular lower surface, a cylindrical lateral surface for connecting the upper surface and the lower surface, an upper cutting edge formed between the upper surface and the lateral surface, a lower cutting edge formed between the lower surface and the lateral surface, and a plurality of rotation-preventing parts provided at the lateral surface so as to prevent the cutting insert from rotating with respect to the tool holder. Each rotation preventing part includes an inner curved surface recessed toward the center of the lateral surface and convexly rounded so as to form concentric circles in conjunction with the lateral surface, and a stepped rotation-preventing surface parallel to the axial direction of the insert and connecting the inner curved surface and the lateral surface.

Abstract: A cutting device includes a mounting head, cutting tools and a bracing element. Each tool has a cutting edge having a recess with a substantially semi-circular contour for accommodating a portion of a workpiece. An engaging protrusion extends into each recess and has a foot circumferential angular range from 20 to 90 degrees. The engaging protrusions project into the recess by ? to 9/10 of its radius. The bracing element extends from one tool and has a surface for supporting the workpiece.

Abstract: In the present invention, there is disclosed a pair of multi-level J-channel cutter shears, comprising a shear blade permanently attached to a handle and a stationary blade being pivotally attached to the shear blade, and wherein an L-shaped channel runs therethrough, creating at least an upper and a lower cutting edge, and wherein the stationary blade includes multi-level cutting surfaces defining the upper and lower cutting edges, and wherein the stationary blade is also attached to a handle.

Abstract: A tool configuration for producing an improved locking system of a floor panel and a method incorporating such tool configuration. The tool configuration is a non-rotating tool configuration profiling certain surfaces of the joint edge of the floor panel, resulting in that the tolerances can be kept on a low level.

Abstract: A cutting assembly for cutting a workpiece includes a frame, a fixture, and a saw. The fixture is coupled to the frame, and is configured to receive the workpiece. The saw has a cutter to cut the workpiece. The saw is pivotally coupled to the frame. The cutting assembly further includes a locking assembly for locking the workpiece within the fixture. The locking assembly includes a lock structure pivotally coupled to the fixture. The lock structure is configured to lock the workpiece within the fixture. The locking assembly further includes a telescopic structure coupled to the saw and the lock structure. The telescopic structure is configured to move the lock structure in response to a pivotal movement of the saw. The telescopic structure facilitates a locking, by the lock structure, of the workpiece within the fixture.

Abstract: Method and device for guiding a tool in a recurring application of a product moved along an X-axis, wherein the tool is mounted on the Z-carriage of a cross guide and is moved therewith along the Z-axis standing perpendicular on the X-axis, wherein the Z-carriage is mounted on the X-carriage of the cross guide, the guide of which is mounted along the X-axis in a base plane, wherein the X-carriage is driven with an X-drive, wherein the Z-carriage is driven by a Z-drive, which is held stationary in the base plane and has a traction means driven by a first servo motor provided for the drive of the Z-carriage, which is driven from the base plane on the movable Z-carriage, wherein a movement of the Z-carriage that is brought about by the movement of the X-carriage and a motive force caused thereby on the traction means, is compensated when actuating the first servo motor provided for the drive of the Z-carriage.

Abstract: A circular saw blade includes a circular plate having a diameter, a thickness, a left face, a right face, a peripheral rim, and a central opening. A plurality of alternating teeth and gullets are disposed about the peripheral rim, each tooth having a front face facing generally toward an adjacent gullet in the cutting direction and a recess defined in the front face. A plurality of cutting inserts are affixed in the recesses in the teeth. Each insert has rake face facing generally toward the adjacent gullet in the cutting direction, a relief face extending generally toward the adjacent top face, and a cutting edge at a junction between the relief face and the rake face. Each rake face is disposed at a hook angle. The relief faces include unbeveled relief faces, left-beveled relief faces, and a right-beveled relief faces arranged in an alternating top bevel with raker pattern.

Abstract: A saw blade comprises a blade backer with a pair of side surfaces that extend substantially parallel to each other. An intermediate surface extends between the pair of side surfaces of the blade backer. A plurality of teeth extends from the intermediate surface. At least one of the teeth is located entirely within planes containing the side surfaces of the blade backer. A tip is formed at an apex end portion of the one tooth. A leading face surface of the tip on the one tooth is disposed at an acute angle relative to a plane extending perpendicular to the planes containing the side surfaces of the blade backer.

Abstract: Disclosed is a method for dressing a single- or multi-thread grinding worm (34) in which a main rolling movement between the grinding worm and a gear-like dressing tool (90) is brought about. In order to create flank modifications on the grinding worm, an additional relative movement is superimposed on the main rolling movement. In addition, an auxiliary drive specifically designed for such a method, a correspondingly designed machine tool and a dressing tool for carrying out the method are disclosed.

Abstract: A retaining socket for receiving a thread die includes a plunge component that is moveable along the longitudinal axis of the retaining socket and at least one pin extending parallel to the longitudinal axis configured to engage the thread die.

Abstract: A protective cutting torch tip cover system is provided, for use with an oxygen and acetylene cutting torch having a conical torch tip having a plurality of ports through which oxygen and acetylene gases pass prior to combustion, which includes a generally conical shaped cover formed of elastomeric material and configured for elastic frictional engagement with said cutting torch tip and a protective cover storage device for holding the protective cover up and away from the torch flame when not installed on the torch tip.

Abstract: A turntable assembly for performing welding or other operations in a pivotably-mounted J-lay tower is disclosed. The assembly includes an annular turntable supported by a base frame to turn about a pipe string in use and a tilt-compensating mechanism acting on the base frame to level the turntable as the tower pivots in use. The tilt-compensating mechanism includes at least one support that is driveable up and down with respect to the tower. In the embodiment disclosed, the support is a carriage movable along an upright track that pivots with the tower.

Abstract: A tool welding system is disclosed that includes a table that heats a tool. A multi-axis robot includes a welding head that is moved relative to the table in response to a command. A controller is in communication with the robot and generates the command in response to welding parameters. The weld parameters are based upon a difference between an initial tool shape and a desired tool shape. The difference between the initial tool shape and the desired tool shape corresponds to a desired weld shape. The desired weld shape is adjusted based upon initial tool shape variations, which includes thermal growth of the tool. The tool is welded to provide the desired weld shape to achieve a desired tool shape.

Abstract: Embodiments of the present invention are engine drive welding and/or cutting systems which optimize the utilization of engine drive systems, including hybrid engine drive systems. Embodiments include modular systems which allow for the remote utilization of a battery powered module which can be separated from an engine drive generator power supply. Other embodiments include engine drive power supplies that can communicate with a load coupled to the power supply, such as welders, cutters and wire feeders to determine an optimum operational level. Further embodiments include engine drive power supplies that can be coupled together to optimize fuel and system usage.

Abstract: A drawn arc welding device includes a welding tool, and an energy storage device coupled to a power source. A charging circuit is connected to the energy storage device replenishing the storage device. A discharge circuit is connected to the welding tool and energy storage device. The discharge circuit regulates and adjusts a welding current of the welding tool to a specified amount. Also disclosed is a process that includes charging the energy storage device, actuating the welding tool, energizing a pilot arc current, lifting the weld stud off a workpiece to draw the pilot arc, energizing a welding arc wherein the discharge circuit regulates a welding current of the welding tool to a specified amount, and plunging the weld stud into the workpiece and turning off the discharge circuit.

Abstract: A method of repairing an oxidized defect in a superalloy article includes removing substantially all of the oxidized defect to form a cleaned out portion of the superalloy article; filling a portion of the cleaned out portion with a weld by fusion welding; cracking the weld; and filling the cracked weld and a remaining portion of the cleaned out portion with a braze material.

Abstract: In some aspects, torch receptacles for coupling a plasma arc torch to a torch lead can include: a body having a first end to connect to the torch lead and a second end to connect to a torch body; a set of ports within the first end to fluidly connect to a set of fluid conduits within the torch lead; and a multiway valve within the body and fluidly connected to the set of ports and to a torch gas conduit formed in the second end, the multiway valve being configured to: i) manipulate a flow of fluids between the first end and the second end to select from primary gases entering the set of ports, ii) deliver a selected primary gas to the torch body through the torch gas conduit, and iii) fluidly connect the torch gas conduit to a gas supply manifold of the plasma cutting system.

Abstract: An apparatus and corresponding methods are disclosed to resistively spot weld a stack of sheet metal having a plurality of sheets of sheet metal. In one embodiment, a method includes contacting a first welding tip to a first side of the stack and contacting a second welding tip to a second side of the stack, the second side comprising a thinnest exterior sheet of the stack, the second welding tip including a contacting surface area less than the first welding tip; applying a squeeze pressure to the stack; and applying a current to the stack by applying a first current pulse for a first duration followed by applying a second current pulse for a second duration longer than the first duration and with a lower current than a current of the first current pulse.

Abstract: A method of raster scanning a surface of an object using a particle beam comprises determining a basic set of raster points within a surface; determining a surface portion of the surface of the object, wherein the surface portion is to be raster scanned; ordering a set of raster points of the basic set located within the surface portion; and scanning of the surface portion by directing the particle beam onto the raster points of the ordered set in an order corresponding to an order of the raster points in the ordered set from the outside to the inside, i.e. starting from the boundary of the surface portion towards its center, or in the reverse order, i.e. from the inside to the outside.

Abstract: Provided is a rapid manufacturing process of ferrous and non-ferrous parts using a plasma electron beam in which the plasma electron beam is workable even in a low vacuum pressure environment and has a relatively large radiation range, productivity of the process is improved as a high-power beam can be emitted to a ferrous and non-ferrous powder, and production costs are reduced due to low maintenance and manufacturing costs.

Abstract: A method of making a downhole servicing tool comprising explosively welding a corrosion resistant material to a corrodible surface of the downhole servicing tool to yield a coated surface, wherein the coated surface comprises an explosively-welded corrosion resistant material.

Abstract: A friction stir welding device and a friction stir welding method provide that an additional material is introduced into the gap between a rotating pin and a fixed shoulder. The pin and/or the shoulder includes a conveyor worm structure by which the additional material is transported to the workpiece.

Abstract: A method for forming a metal matrix composite (MMC) structure includes forming an assembly including at least two blocks of a primary phase material sharing an interface at which a secondary phase material is disposed. The assembly has a length, a width, and a thickness. The method also includes clamping the assembly to at least one of urge the at least two blocks toward each other or maintain the at least two blocks at a predetermined position. Also, the method includes passing a rotating friction-stir pin along the interface from the front edge to the rear edge. The friction-stir pin has a mixing length extending at least the width of the assembly, and passing the friction-stir pin along the length of the assembly disperses the secondary phase material into the primary phase material and welds the at least two blocks together.

Abstract: A filter device for gas filtration has a filter housing and a plate-type filter element disposed in the filter housing. The filter element is provided with a raw side and a clean side and is flowed through from the raw side to the clean side by a gas to be purified in a direction that is orthogonal to a filter plane of the plate-type filter element. A cover element is connected to the filter housing by a tensioning bolt penetrating the filter element. The filter element has a cutout forming a clean-side gas collecting chamber. A sealing element is arranged on the clean side of the filter element and frames the gas collecting chamber at least partially. A sealing eye is connected to the sealing element and arranged in the gas collecting chamber, wherein the tensioning bolt is guided through the sealing eye.

Abstract: A method of preparing an apparatus for material processing by generating optical breakthroughs in an object. The apparatus includes a variable focus adjustment device. A contact element is mounted to the apparatus, the contact element has a curved contact surface having a previously known shape. The position of the contact surface is determined prior to processing the object, by focusing measurement laser radiation near or on the surface by the variable focus adjustment device, and the focus position is adjusted in a measurement surface intersecting the expected position of the contact surface. Radiation from the focus of the measurement laser radiation is confocally detected. The position of points of intersection between the measurement surface and the contact surface is determined from the confocally detected radiation to determine the position of the contact surface from the position of the points of intersection and the previously known shape of the contact surface.

Abstract: Machining device (100) comprising: a light source (33); an optical system (2) for obtaining a spatially offset outgoing light beam (7) remaining parallel to a given position upstream focusing means (9), said optical system (2) comprising: a movable mirror (19) such that its normal is able to depict a trajectory in a three-dimensional space, said optical system (2) being configured such that said first incident light beam (4) and said normal to the movable mirror (19) are separated by an angle (15) comprised between 0° and 15° for all possible positions and orientations of said movable mirror (19); driving means (6) for moving said movable mirror (19); a retro reflection system (21) able to provide a second incident light beam (8) parallel to a first reflected light beam (23) on said movable mirror (19); focusing means (9) for focusing outgoing light beam (7) on a target (10).

Abstract: A rectilinear beam distributor capable of maintaining visibility of visible light emitted from a guide laser is provided. In a beam distributor, a beam direction changing unit has a dichroic property that the beam direction changing unit reflects an incident beam and transmits a visible light. A guide laser is disposed so as to move with movement of the beam direction changing unit in an optical axis direction of the incident beam when oscillating the visible light so that the visible light passes through the beam direction changing unit and the optical axis thereof is identical to a reflection beam.

Abstract: While conveying a flat plate material X, a laser blanking apparatus 100 for cutting the plate material X into a blank material with laser light emitted from a laser nozzle 11 includes an endless conveyor 1 for feeding the plate material X, a pair of upstream and downstream support rollers 21a and 21b provided below the laser nozzle 11, and a drawing roller 21c provided below the upstream and downstream support rollers 21a and 21b, wherein the upstream and downstream support rollers 21a and 21b and the drawing roller 21c guide the endless conveyor 1.

Abstract: A tire mold or a tire mold segment can include an air compression cavity, which connects to multiple surface connection slots having dimensions between 10 and 300 microns, which can be suitable for selective removal of air in the mold. The air compression cavity, can be close to the outside ambient, allowing the air escaping the interior of the mold to be compressed, which can assist in preventing the rubber material from leaving the mold pattern surface.

Abstract: A nozzle of a layered object manufacturing apparatus according to embodiments includes a gas supply part and an exhaust part. The gas supply part includes a gas supply port through which gas is supplied. The exhaust part includes an exhaust port through which the gas is exhausted. The gas supply port and the exhaust port face each other and are spaced apart from each other.

Abstract: A part, such as an automotive part, is provided. The part includes at least two work pieces which are joined together at a weld seam. The weld seam has a laser metal deposition layer with at least one of nickel and iron, and the laser metal deposition layer is substantially entirely free of silicate islands. The part further includes a painted, phosphate or electrocoated coating which is bonded with at least a portion of the laser metal deposition layer of the weld seam.

Abstract: The present invention provides a device and method for laser cutting of aluminum alloy wheel blank burrs. The device includes a wheel hub lifting and locking mechanism and one or more groups of lasers mounted to a moving mechanism, and the moving mechanism comprises vertical guide columns (8) and horizontal guide columns (10) mounted to the vertical guide columns (8). During use, the device of the present invention can realize the function of online cutting of wheel burrs, thereby improving work efficiency and reducing manual labor, and the device has the characteristics of high cutting precision, rounded and burr-free cutting parts, stable performances, high degree of automation and the like.

Abstract: The present invention provides a device and method for degating of an aluminum wheel blank by laser cutting, and the device comprises members including a lower lifting frame movable long beam, a middle lifting frame inner side oblique beam, a middle lifting frame pin shaft, a rubber supporting cushion, an upper lifting frame long fixed beam, a middle lifting frame outer side oblique beam, a first stroke limiting frame, a first stroke limiting wheel, a second stroke limiting frame, a second stroke limiting wheel, piston firm retaining rings, frame-shaped guide plates, directional sliding blocks, grating positioning devices, a wheel blank member, a roller way, a lower rack fixed frame, a lower gate taking device fixed frame, a laser cutting head, an eccentric turning wheel, high-temperature-resistant resin clamping gaskets, clamping blocks, rack vertical corner frames, clamping hydraulic cylinder pistons, horizontal clamping hydraulic cylinders, a movable plate and the like.

Abstract: A multi-layered brazing sheet material including an aluminum core alloy layer, a brazing clad layer material on one face of the core layer, an inter-layer between the core layer and brazing clad layer material, and a water-side layer on the other face of the core layer. The core layer made from aluminum alloy having, in wt. %, up to 0.6% Si, up to 0.45% Fe, 0.6% to 1.25% Cu, 0.6% to 1.4% Mn, 0.08% to 0.4% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.2% Ti, up to 0.3% Zn, balance aluminum and impurities. The brazing layer made from aluminum alloy having 6% to 14% Si and up to 2% Mg, balance aluminum and impurities. The inter-layer made from 1xxx-series aluminum alloy. The water-side layer made from 3xxx-series aluminum alloy having 0.5% to 1.8% Mn and 1% to 3.5% Zn.

Abstract: The exposed metal tip of the strike end of an SMAW welding electrode is covered with a protective coating formed from a binder and metal particles. Because metal particles rather than graphite particles are used to provide electrical conductivity to this protective coating, flare-up of the arc when initially struck is eliminated substantially completely. In addition, the potential for weld porosity problems is also eliminated, because the metal particles of the inventive electrode do not produce CO2 as a reaction by-product which can ultimately lead to improper welding technique.

Abstract: Provided is a flux-cored arc welding material having remarkable impact resistance and abrasion resistance. The flux-cored arc welding material having remarkable impact resistance and abrasion resistance comprises: 0.1-0.75 wt % of C; 0.2-1.2 wt % of Si; 15-27 wt % of Mn; 2-7 wt % of Cr; 0.01 wt % or less of S; 0.018 wt % or less of P; 4.3-15 wt % of TiO2; 0.01-9 wt % of at least one selected from the group consisting of SiO2, ZrO2 and Al2O3; and the balance of Fe and other inevitable impurities. Further provided are a welding joint capable of all-position welding and having remarkable weldability, low temperature impact toughness and abrasion resistance, and thus a welding material very preferably applied to the manufacture of pipes used in the oil sand industry field and the like.

Abstract: A jack stand apparatus has a frame having a first portion and an outwardly extending second portion, a barrel affixed to the outwardly extending portion so as to have a generally vertical longitudinal axis, a jack screw threadedly received by the barrel, and a plurality of caster wheels removably affixed to the frame. The barrel has an outer end extending outwardly for a first distance from the first portion of the frame. The plurality of caster wheels support the frame for a second distance from a level of the bottom of the caster wheels. The first distance is no more than the second distance. A support head is affixed to an end of the jack screw opposite the barrel. The frame is invertible relative to the caster wheels such that in one position the barrel extends upwardly from the frame and a second position in which the barrel extends downwardly from the frame.

Abstract: A method of making pre-sintered preforms using a mixture of base superalloy particles and titanium-containing boron and silicon free braze alloy particles, such as for the repair of superalloy gas turbine engine components. Alloy particles as large as 2 mm provide reduced shrinkage when compared to prior art preforms. Braze material compositions disclosed herein are boron and silicon free and may have melting temperature ranges as low as 10° C., and they include no element not already present in the composition of the superalloy component.

Abstract: An over-molded valve stem for a valve assembly includes a rigid inner member and a unitary elastic cover molded over the inner member. The inner member includes a main section and an arm extending from the main section. The cover includes a main cover portion, an arm cover portion, and an end portion, with the end portion being spaced from the main cover portion by the arm cover portion. The main cover portion is disposed over the main section with the end portion and main cover portion defining diameters that are larger than the diameter of the arm cover portion. The end portion can include an integral seal member for engaging with a bore of the valve assembly. A method of making the valve stem involves molding the cover about the inner member such that a parting line doe not axially extend across sealing surfaces.

Abstract: A precision forming method of a high-efficiency and near-net hollow valve blank of an engine is provided, wherein the precision performing is realized by the cross wedge rolling mold, under the rolling the metal tubing for the valve deforms, with a middle part sunken and two ends elongating, the middle part forms a stem part of a hollow valve, the two ends form disk parts to be machined, and the connection sections between the disk parts and the stem part form neck parts having arced concave faces and a frustoconical lateral face in structure, achieving better consistency among the acquired hollow valve blanks. The disk part of each acquired hollow valve preformed blank is machined by the die-forging forming mold that is matched with the disk structure of the manufactured hollow valve, the hollow valve preformed blank is directly placed in the cavities of the die-forging forming mold for forging.

Abstract: A plate with a passage and the like capable of shortening a process time than a previous one and of suppressing leakage from or contamination to the passage are provided. The plate with the passage is a plate in which the passage for causing a fluid to circulate therein is formed, and includes a body plate formed of a metal or an alloy and in which a groove serving as the passage is provided, a cover plate that covers the groove, and a deposition layer that is formed such that metal or alloy powder is accelerated with a gas and is sprayed on the body plate and the cover plate in a solid phase, and covers the cover plate.

Abstract: A robot includes a movable robot arm, at least one actuator for moving the robot arm, and a tool attached to the robot arm for adjusting the track of a wheel by turning of a track rod of a motor vehicle. The tool includes a tool head and a tool handle connecting the tool head to the robot arm. The tool head has a slot-shaped opening in a distal end, which is remote from the robot arm, for introducing a track rod with a thickness that is less than or equal to 20%, and preferably less than and equal to 15% of the tool head from the distal end to the connection to the tool handle.

Abstract: The present invention is an apparatus, system and method to properly align and install large pistons in cylinders that holds both the piston and cylinder being assembled, and has a number of alignment mechanisms such as but not limited to a laser.

Abstract: A method for laser assisted machining is provided, by utilizing a computer to develop interrelated heating and machining plans, from a variety of input data describing the material to be machined, the properties of lasers and pyrometers used for heating the material, and computer models of the machining arrangement, workpiece and final part to be produced. An iterative process continues until the machining and heating plans result in the cutting zone of the workpiece being maintained at a desired temperature with no obstruction in the line-of-sight of at least one laser and pyrometer throughout the machining process, while also maintaining the cutting tool at or below a desired maximum temperature.

Abstract: A conveyance jig provided for integrally conveying a separate type control panel with a machine tool that are disposed separately, includes a fixing section with respect to a base and a holding section that holds a separate type control panel in a state of being installed on a movable stand with casters at the rear of the base in order to integrally conveys a machine tool including the base and a processing module that is movably installed to be movable in the front-rear direction along a straight line rail provided on the base separately with a gap in a width direction, and the separate type control panel that is installed on the movable stand with casters and disposed separately from the machine tool.

Abstract: A drilling device with automatic or controlled feed speed. The drilling device includes a casing that houses a drilling spindle that is to drive a cutting tool in motion to drill a workpiece having a target surface. The spindle is tiltable inside the casing relative to the axis of the casing. The device has a self-alignment, which self-aligns the spindle relative to the target surface. The self-alignment moves the spindle into a position in which its axis is essentially perpendicular to the target surface under the effect of an application of a thrust force of the drilling device against the target surface essentially along the axis of the casing.