WO2022135814A2 - Dispositif et procédé pour rectifier un profil - Google Patents

Dispositif et procédé pour rectifier un profil Download PDF

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Publication number
WO2022135814A2
WO2022135814A2 PCT/EP2021/082672 EP2021082672W WO2022135814A2 WO 2022135814 A2 WO2022135814 A2 WO 2022135814A2 EP 2021082672 W EP2021082672 W EP 2021082672W WO 2022135814 A2 WO2022135814 A2 WO 2022135814A2
Authority
WO
WIPO (PCT)
Prior art keywords
profile
grinding
rotation
axis
carrier
Prior art date
Application number
PCT/EP2021/082672
Other languages
German (de)
English (en)
Other versions
WO2022135814A3 (fr
Inventor
Frank Mevert
Original Assignee
Schweerbau International Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schweerbau International Gmbh & Co. Kg filed Critical Schweerbau International Gmbh & Co. Kg
Priority to US18/257,966 priority Critical patent/US20240084520A1/en
Priority to CN202180077742.2A priority patent/CN116457532A/zh
Priority to CA3202132A priority patent/CA3202132A1/fr
Priority to AU2021406469A priority patent/AU2021406469A1/en
Priority to JP2023537317A priority patent/JP2024500798A/ja
Priority to EP21820140.8A priority patent/EP4267798B1/fr
Priority to KR1020237018673A priority patent/KR20230098639A/ko
Publication of WO2022135814A2 publication Critical patent/WO2022135814A2/fr
Publication of WO2022135814A3 publication Critical patent/WO2022135814A3/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/02—Working rail or other metal track components on the spot
    • E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
    • E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/004—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding rails, T, I, H or other similar profiles
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2203/00—Devices for working the railway-superstructure
    • E01B2203/01—Devices for working the railway-superstructure with track
    • E01B2203/012—Devices for working the railway-superstructure with track present, i.e. in its normal position

Definitions

  • the invention relates to a mobile device designed in particular as a rail vehicle for grinding a profile with a convex running surface and a side surface delimiting the profile, in particular a track rail intended for rail vehicles, the device being movable in a feed direction along the profile and at least one about an axis of rotation has profiled grinding bodies which can be driven in a rotationally movable and/or oscillating manner and are arranged on a carrier. Furthermore, the invention relates to a method for grinding the profile, in which at least one grinding body arranged on a carrier is driven in a rotationally movable or oscillating manner about an axis of rotation.
  • DE 69201 811 T2 already discloses a mobile device designed as a rail vehicle with a plurality of grinding wheels for grinding a track rail with a convex running surface and a delimiting side surface.
  • the device can be moved in the feed direction along the track rail, while the grinding wheels can also be driven in a rotationally movable manner about an axis of rotation.
  • the grinding wheels each have an inclined axis of rotation which does not intersect the rail profile, which are arranged on a frame of the rail vehicle which can be displaced transversely to the rail and which are guided by means of rollers which bear against the rail.
  • the frame serves to slide the carrier both in a transverse direction and perpendicular to the longitudinal axis of the rail.
  • the carrier has at least one support roller placed in close proximity to the axis of the corresponding grinding wheel. These support rollers are placed against the inside of the rail head.
  • DD 219230 A5 describes a device for reprofiling a rail head, with the axis of rotation of the grinding wheel being inclined relative to the vertical and horizontal planes.
  • the grinding wheel is guided vertically and laterally relative to the rail on a grinding frame by means of grinding shoes or rollers.
  • the grinding wheel points a flat grinding surface, which is reworked by a pin used to dress the grinding wheel during the grinding process.
  • the processing of the convex rail head is therefore only partial, so that facets are generated as a result and the rail transverse profile is given a discontinuous course.
  • DE 26 12 173 A1 discloses inclined contra-rotating grinding wheels with offset axes that do not intersect the profile, which are suspended on tool carriers which can be displaced vertically and transversely by means of a tracking system associated with each rail.
  • the grinding tools arranged on each side of the rail act on the upper side of the rail head with the same infeed movement, whereby the transverse displaceability of the two frame parts relative to one another results in centering for each rail independent of one another.
  • DE 32 27 343 A1 also discloses a grinding device in which a height-adjustable tool carrier is arranged under a chassis for each of the rails, which guides a rotatable machining tool, in particular a cup grinding wheel, in a defined manner via lateral rollers running on the profile, whose axis of rotation cuts the profile of the rail.
  • face milling profiling discs are arranged on a chassis on a processing plate, which is linear in relation to the rail in the vertical and transverse direction as a compound slide and can also be angularly adjusted around the longitudinal and vertical axis, with sliding on the rail Sensors supply the reference variable for the setting.
  • the tool can be tracked to the rail, for example, by means of an articulated arm robot.
  • the device known from US Pat. No. 4,583,893 A comprises a carrier element which is linearly displaceable in relation to a rail and comprises a contoured milling tool.
  • a depth-of-cut reference guide for the tool storage is mountable on the top of the running surface of the rail and a lateral depth-of-cut reference guide on the side surface.
  • the two cutting depth reference guides are rotatably mounted around a common shaft and are arranged in front of the milling tool in the feed direction.
  • grinding devices which have at least two cup wheels which are arranged one behind the other in the longitudinal direction of the rail head and are set against the running surface on opposite sides of the rail head and have a grinding profile corresponding to the running surface profile.
  • a method for the machining of railroad tracks is known for this purpose, in which a large number of rotating grinding wheels are used, which are arranged next to and behind one another, with some of the grinding wheels being inclined in accordance with the original profile of the rail heads. With such a grinding process, only an approximation to the original profile of the rail heads can be achieved.
  • EP 0 315 704 B1 already describes a grinding machine for reprofiling rail heads with a grinding head which can be adjusted by a lifting device, with the grinding heads being able to be raised and lowered successively and offset.
  • An arrangement of grinding modules in a rail grinding machine is known from WO 00/58559 A1, which takes into account the radial offset in the case of narrow rail curvature radii without the occurrence of constraining forces and enables the rail to be reprofiled in a simple manner.
  • the grinding tool has five degrees of freedom, in which each grinding module is mounted with a frame that is at least approximately vertically adjustable and on the frame with a frame that is at least approximately horizontally adjustable.
  • So-called cup grinders are also known, which are brought into engagement with the rail surface on the end face and are preferably set at a tilting angle with respect to the rail surface to be ground.
  • a front face of the grinding tool is also used to process the rail, although this is contoured to match the rail geometry. This is made possible by the fact that the axis of rotation does not run through the rail but at a lateral distance.
  • the grinding zone is therefore not in the direction of the feed movement in front of the axis of rotation, but transversely between the axis of rotation and the rail.
  • a high rotational speed and/or high contact pressure is set. In practice, this leads to flying sparks and thus to the risk of fire.
  • EP 2 525 933 B1 relates to a device for machining the running surface of a rail head with a frame guided along the rail head.
  • the machining tools are designed as face milling cutters that can be driven in opposite directions, the axes of rotation of which run in a common plane and the cutting areas of which overlap one another transversely to the longitudinal direction of the rail head.
  • EP 0444242 A1 also discloses a device for grinding a rail running surface with a grinding belt aligned parallel to the longitudinal axis of the rail, with another belt designed as a pressure belt being arranged between the pressure rollers and the grinding belt.
  • So-called slide stones are also used for profile grinding the heads of railroad tracks. Grinding trains are used here, with grinding stones arranged on the underside, which are guided over the rail surfaces under pressure.
  • the slide stone grinding is based on an oscillating translational movement of the grinding wheel along the rail during the movement of the vehicle. Due to the contouring of the grinding wheel, which largely retains its shape during use even as wear progresses, a good surface quality and dimensional accuracy is achieved in principle.
  • a disadvantage of the grinding process with slide stones is that the slide stone adapts to the worn profile of the rail surface after a short time, so that the ripples and waves in the rail surface can be eliminated, but the original profile of the rail head cannot be restored.
  • DE 21 32 220 A proposes providing an abrasive carrier that can be attached to the grinding train and has individual guide channels pointing to the rail surface for a relatively coarse-grained abrasive with loose grain, which can be fed through the channels under pressure from the Rail surface is fed and held there by the channel walls, the lower boundary edges of the guide channels to the rail surface have a distance which is smaller than the grain size of the abrasive.
  • abrasive carrier that can be attached to the grinding train and has individual guide channels pointing to the rail surface for a relatively coarse-grained abrasive with loose grain, which can be fed through the channels under pressure from the Rail surface is fed and held there by the channel walls, the lower boundary edges of the guide channels to the rail surface have a distance which is smaller than the grain size of the abrasive.
  • the arcuate cutting path of the individual cutting edges of the milling tool caused by such peripheral milling leads to a surface of the rail head that is corrugated in the longitudinal direction of the rail, with the surface quality deteriorating with increasing feed rate due to the increasing distance between the chip removals of successive cutting edges.
  • WO 02/06587 A1 also describes a method for reprofiling at least the convex part of the rail head cross-sectional profile of a rail by peripheral milling with more than five milling tracks lying next to one another in the longitudinal direction of the rail.
  • EP 2 177664 A1 proposes moving the cutting edge along a straight path during the machining of the workpiece.
  • the object of the invention is to significantly improve the stock removal rate when grinding profiles, while at the same time there are high demands on the surface quality and the dimensional accuracy of the profile machined in this way.
  • a device for grinding in which the axis of rotation can be positioned at an angle relative to the vertical plane and/or relative to the horizontal plane and the axis of rotation does not run through the profile and in which the carrier on the device is in a transverse plane the transverse plane is arranged to be movable in particular in a translatory manner in relation to the feed direction and the carrier is kinematically coupled to at least one contact element which can be placed against the profile in a non-positive manner as a lateral copying and/or vertical copying, through which the carrier with the grinding wheel is positioned in the transverse plane opposite the profile and opposite the device automatically aligns.
  • the invention is based on the finding that compliance with extremely small tolerances when processing the profiles using the mobile device designed as a rail vehicle can be achieved in that the carrier of the grinding wheel both relative to the profile and relative to the mobile Device is movable and aligns itself automatically in use of the device. At the same time, the result of the work is achieved independently of any wear and tear that occurs on the abrasive body, which therefore does not have a negative effect on the quality of the surface treatment.
  • the device is equipped with a contact element, for example a sliding element such as a carriage, or an arrangement with at least one roller or one wheel.
  • a contact element for example a sliding element such as a carriage, or an arrangement with at least one roller or one wheel.
  • Contact-based lateral and/or vertical copying moves the carrier of the grinding wheel in its guide in the transverse plane and adjusted to the grinding wheel wear.
  • the contact element also compensates for the displacement in the direction of the outside of the curve that occurs in practice due to the forced guidance of the mobile device when cornering.
  • Such a forcibly guided lateral copying is preferably applied in a non-positive manner to the inner or medial lateral surface facing the respective other track rail.
  • the carrier also carries a paired arrangement of several grinding bodies, which are arranged in a common transverse plane of the device in such a way that the grinding bodies can be aligned both together relative to the parallel track rails and relative to one another. Since a separate contact element is assigned to each sliding body, inaccuracies in the profile along its main extension or deviations from the ideal parallel alignment of the track rails can also be compensated for.
  • the contact element is prestressed with a predetermined, in particular adjustable, prestressing force in relation to the profile, in particular the track rail. As a result, the grinding bodies are spread against each other at the same time, so that in particular no additional abutment is required to absorb the contact force.
  • another contact element which can be designed as a roller, is prestressed from above against the running surface of the profile or the track rail, in order to also achieve automatic adjustment in the vertical direction.
  • the contact element can also have two contact surfaces in order to enable horizontal alignment with respect to the side surface and vertical alignment with respect to the running surface at the same time with a single contact element.
  • the device equipped in this way is independent of the movement of the rail vehicle during operation due to the vertical and horizontal guidance of the carrier and the associated grinding bodies, so that for the first time a working platform is not the reference for the setting of the tools, but directly the profile to be processed itself, which clearly leads to far fewer errors.
  • the machining quality can be further improved by arranging the grinding bodies in a common transverse plane of the device or the cross-sectional plane of the profile with the contact element assigned to it.
  • the position of the contact element as a page copy is directly on the Center of rotation of the grinding body, which is designed in particular as a cup grinding wheel, is related so that there is no lateral offset even when traveling through a curve. Rather, the contour of the grinding wheel always remains congruent with the profile.
  • the axis of rotation of the grinding body is particularly preferably oriented with a lateral or medial lateral offset in the cross-sectional plane of the profile in such a way that it does not intersect the profile.
  • a negative shape of the profile is formed in the grinding wheel due to an angle of attack and an eccentric position of the cup grinding wheel. This creates a contact surface that is of different lengths in terms of its contact length on the surface of the profile, which is distributed over the transverse rail profile. Due to this extended contact surface in the radius area of the profile, the grinding tool is automatically stabilized in the longitudinal direction, which leads to an optimal smoothing of the surface, in particular the residual waviness of the profile.
  • a plurality of grinding bodies are arranged one behind the other in the feed direction on a respective carrier, with the axes of rotation of the grinding bodies not being aligned parallel but at an angle to one another.
  • Different angles of attack of the grinding wheels produce different grinding areas on the surface of the profile.
  • the entire transverse profile can be ground with two grinding wheels in a row at different angles, in that different grinding wheels are used to process different surface sections (tracks) running parallel to one another in the direction of the main extension of the profile with different angles of inclination.
  • the grinding wheels can be operated in parallel and counter-rotation, so that the direction of rotation of the grinding wheels in the feed direction and against the feed direction is identical.
  • a removal jet that is always acting in the same direction, in particular tangentially, is created by the rotating grinding body, regardless of the direction of movement of the device.
  • the axes of rotation of the grinding wheels are not arranged parallel to the cross-sectional plane of the profile to be machined, but are oriented inclined in the feed direction or counter to it, the larger area of the contact surface between the grinding wheel and the profile is in front of or behind the plane of the axis of rotation. In this way, a dragging or plunging machining in relation to the feed direction with respect to a cross-sectional plane of the profile is realized in a simple manner.
  • a trailing or trailing arrangement for hobbing or face milling to smooth the residual waviness can also be implemented.
  • the grinding body is placed in the middle, ie if the axis of rotation runs through the profile, in particular its central longitudinal axis, straight facets are produced, which has already proven to be expedient in rough grinding. It is also useful to use a combination of several grinding bodies, of which at least one axis of rotation passes through the profile and at least one other axis of rotation with a lateral offset to the profile, with the latter not being oriented in a cutting manner.
  • the grinding bodies are in contact with the profile, depending on the force, with a contact pressure or prestressing force that can be set or limited in particular.
  • the regulation of the contact pressure or pretensioning force is expediently carried out taking into account the relevant parameters of the profile and the ambient conditions, with the detected torque of the grinding wheel and the feed rate of the device also being able to be included.
  • the carrier or the axis of rotation can be adjusted in a displacement-controlled manner.
  • the carrier is designed to be reversingly translationally movable in a plane parallel to the main extension of the profile or the track rail to initiate a superimposed movement during the rotating and/or oscillating movement.
  • the grinding bodies designed as a grinding wheel is simultaneously subjected to a reversing translational movement during the rotating or oscillating movement reciprocating along a certain arc of a circle of the carrier equipped with the grinding body is moved in a plane parallel to the main extension of the track rail, a multiple grinding means intervention takes place in each rail section.
  • a rail section is not only reached once by the grinding zone of the grinding wheel, but is run over several times by the grinding wheel and a correspondingly high removal rate is achieved.
  • surface qualities comparable to a slide stone process can be achieved, with waviness in the rail surface in particular being able to be reliably ruled out.
  • the shape of the track rail to be processed is not determined by the geometry of the grinding wheel, but by its angle of attack, so that there is no dimensional deviation in connection with a rotating or oscillating movement.
  • a combination of several grinding bodies, which is known per se, has already proven to be useful.
  • the axis of rotation of at least one grinding body encloses an acute angle with the longitudinal axis of the profile.
  • the desired shape of the grinding process to be produced is accordingly achieved by a plurality of grinding bodies, which together produce the desired profile.
  • the axes of rotation of different grinding wheels enclose an acute angle relative to one another.
  • the angle of attack of at least one grinding wheel can be designed to be adjustable, with the angle of inclination of the respective axis of rotation preferably also being designed to be adjustable during operation of the device.
  • angle of attack can also be selected according to the desired free space profile, in order to be able to achieve optimal grinding results even under spatially restricted operating conditions.
  • the axis of rotation of the grinding body forms an acute angle with the transverse plane of the track rail, the material removed can be transported away quickly from the processing zone in a simple manner, so that the removed material cannot collect in the grinding gap .
  • the abrasive body has a rotationally symmetrical shape.
  • a variant of the grinding wheel which at least partially has a has a concave shape of the peripheral surface or the end face, the concave grinding surface being adapted to the geometry of the profile of the track rail.
  • the grinding wheel and/or the carrier has at least one electric and/or hydraulic drive in order to provide the desired drive power and also a rapid change in the speed of the carrier or the grinding wheel by decelerating or accelerating in To be able to make depending on the respective operating conditions.
  • the drive can be arranged centrally on the device or decentrally on the carrier, with several of the grinding bodies being able to be supplied with the required drive power by a common drive.
  • Another embodiment of the invention that is also particularly promising is also achieved in that the rotary or oscillating movement of the at least one grinding body on the one hand and the translational movement of the carrier on the other hand are synchronized by a kinematic coupling.
  • the rotational or oscillating movement is adapted to the movement of the carrier, which is cyclically decelerated at the reversal points due to the reversing translatory movement.
  • the associated change in the relative movement of the grinding wheel in relation to the track rail is compensated for by the kinematic coupling.
  • a superimposition of another drive power of the grinding body by a further drive power brought about by means of the kinematic coupling can thus be implemented without any problems.
  • racks, connecting rods, coupling rods or the like can be used for power transmission.
  • an additional speed component of the rotation or oscillation of the grinding wheel rotation is thus superimposed on the at least one grinding body, especially when the carrier is moving in a direction opposite to the direction of travel.
  • the side copying and the guide are prestressed by a prestressing force in relation to the profile, while the grinding body can be lifted off on one side, for example.
  • the drive power of the carrier is used as the sole drive power for the rotation of the grinding tool by using the coupling.
  • the synchronized rotary or oscillating movement of the at least one grinding body on the one hand and the translatory movement of the carrier on the other hand by a hydraulic, pneumatic or an electromechanical coupling.
  • the additional or sole drive power for the at least one grinding body is created by the cyclic pressure increase or reduction of the hydraulic or pneumatic pressure of the drive of the carrier, which becomes effective in the areas of the reversal points of the reversing movement.
  • a distinction can also be made between the drive power provided at the rear and front reversal points.
  • the relative speed of the grinding body which is moved in a rotating or oscillating manner and also in a translatory manner by means of the carrier, can be kept constant with respect to the track rail within predetermined limit values.
  • a pressure accumulator can also be provided for this purpose in order to be able to provide as uniform a drive power as possible.
  • the object according to the invention is also achieved with a method for grinding a profile, in particular a track rail intended for rail vehicles, in which at least one grinding body arranged on a carrier is driven in a rotationally movable or oscillating manner about an axis of rotation, in that during the rotational or oscillating movement of at least one grinding body, the carrier carrying the grinding body is at least temporarily driven in reversing translational fashion to initiate a superimposed movement parallel to a longitudinal axis of the profile.
  • the grinding wheel ensures the desired material removal through its rotational or oscillating movement.
  • the axis of rotation of the grinding wheel is arranged inclined in particular at an acute angle relative to the plane of the surface section to be machined and/or to the cross-sectional plane of the track rail.
  • the axis of rotation is preferably inclined in such a way that the lateral axis section lies in front of the medial axis section in relation to the track rail in the direction of travel.
  • the medial side refers to the side facing the adjacent track rail and the lateral side to the side facing away from the adjacent track rail.
  • the rotational speed can be reduced, which also significantly reduces flying sparks during operation, while the relative speed can still be increased between the rail surface of the track rail and the grinding body.
  • the rotation is preferably controlled in such a way that the rotational speed of the grinding wheel is increased in the area of the reversal points of the translational reversing movement of the carrier.
  • the rotational speed of the rotating movement of the grinding wheel is reciprocally adapted to the translatory movement.
  • the translational speed is added when moving in the direction of travel and the translatory speed is subtracted when moving against the direction of travel.
  • the absolute translational speed of the grinding wheel is not zero in the area of the reversal points during operation. Rather, the speed of the carrier between the reversal points in the direction of travel is greater than against the direction of travel. To compensate, the rotation speed is further reduced in the direction of travel, but increased in the opposite direction to travel.
  • a particularly practical development of the method according to the invention is also achieved in that the speed or the frequency of the rotating or oscillating movement of at least one grinding wheel in the area of the reversal points of the translatory reversing movement is changed, in particular increased, compared to an area between the reversal points in order to Compensate for a delay in the translational movement of the carrier by increasing the rotational or oscillating movement accordingly.
  • the change in the rotational speed or the frequency of the rotating or oscillating movement is set reciprocally to the reversing translatory movement.
  • the rotational or oscillating movement is set at a lower rotational speed or frequency in the direction of travel than in the opposite direction of travel. This compensates for the movement of the mobile device itself along the track rail, which is superimposed on the translatory movement of the carrier and increases or reduces the amount depending on the movement phase of the carrier.
  • the deceleration and acceleration occurring in the area of the reversal points of the reversing movement of the carrier can be compensated for in this way.
  • the rotational or oscillating movement of the at least one grinding body on the one hand and the translational movement of the carrier on the other hand are initiated in a kinematically coupled manner in order to keep the control effort low.
  • the carrier can also be connected to an energy store, for example a pressure vessel, which is filled in the region of the maximum speed of the carrier.
  • an energy store for example a pressure vessel, which is filled in the region of the maximum speed of the carrier.
  • the stored energy can be extracted and used to increase the speed or frequency of the grinding wheel.
  • the invention permits various embodiments. To further clarify its basic principle, one of them is shown in the drawing and is described below. This is shown in a schematic representation in
  • FIG. 3 shows a front view of a carrier according to the invention of a device according to the invention with the abrasive body shown in FIG. 1;
  • FIG. 4 shows a front view of the carrier with the grinding wheel arranged inclined at an angle of 5°;
  • FIG. 3 shows a front view of a carrier according to the invention of a device according to the invention with the abrasive body shown in FIG. 1;
  • FIG. 4 shows a front view of the carrier with the grinding wheel arranged inclined at an angle of 5°;
  • FIG. 4 shows a front view of the carrier with the grinding wheel arranged inclined at an angle of 5°;
  • Figure 5 is a front view of the carrier during adjustment of position and orientation
  • Figure 6 is a side view of the carrier during adjustment of position and orientation
  • FIG. 7 shows an enlarged cross section through the profile according to FIG. 1;
  • a device 1 designed as a rail vehicle for grinding a profile 2 designed as a track rail, in particular for grinding a running surface 3, by means of a grinding body 4 is explained in more detail below using a schematic diagram in FIGS.
  • the device 1 shown is designed in this variant specifically for the processing of parallel track rails as profiles 2 to be ground.
  • FIG. 3 shows parallel track rails and the mirror-symmetrically arranged grinding bodies 4 associated with them, which are arranged together on the device 1, as will be explained in detail below.
  • the grinding bodies 4 are equipped with a front grinding surface 5 with bonded grain and a cutting edge that is not geometrically defined.
  • different angles of inclination a; ß be provided between 5 ° and 90 ° of an axis of rotation 6 of the grinding body 4 with respect to a central longitudinal plane 7 of the profile 2.
  • an essential aspect of the invention is that the axis of rotation 6 is not only inclined relative to the vertical and the horizontal, but is also oriented eccentrically with an offset such that the axis of rotation 6 of the grinding body 4 does not intersect the profile 2.
  • a sector of a circle or a segment of a circle with a central angle of less than 180° comes into contact with the profile 2.
  • an in radial direction concave Realize grinding surface 5 of the grinding body 4.
  • This concave shape 8 can already be introduced into the grinding body 4 during the manufacturing process, which optimally adapts to the profile 2 during use, so that the wear and tear that occurs cannot lead to an undesirable deviation in shape.
  • the grinding surface 5 reaches far around the convex surface section 9 between the running surface 3 and an inner side surface 10 that delimits the profile 2 medially, so that it enables a hitherto unattainable processing quality in terms of dimensional and shape accuracy.
  • Each of the grinding wheels 4 is arranged on a carrier 11, which, to compensate for wear, allows the grinding wheel 4 to be fed in axially parallel to the axis of rotation 6 in relation to the profile 2 and also to set the desired angle of inclination ⁇ , ⁇ that is optimal for the respective application conditions.
  • the carrier 11 is in turn movable in translation in a plane parallel to the cross-sectional plane of the profile 2 or in the transverse plane to the direction of advance of the device 1 by means of a guide 12 relative thereto.
  • the position of the grinding body 4 relative to the profile 2 which is always optimal and constant during operation, can be maintained even when the device, as a mobile, rail-bound vehicle, is itself subjected to a relative movement to the profile 2, as is the case in principle when driving around curves.
  • the carrier 11 is moved laterally, with two carriers 11 arranged in a common transverse plane being kinematically coupled for joint adjustment of the respective grinding bodies 4 and thereby carrying out a joint movement.
  • the control of this lateral, medial or lateral movement of the carrier 11 is achieved in that the carrier 11 is connected to at least one contact element 13 which can be placed in a non-positive manner against the profile 2 and by means of which the carrier 11 is positioned with the grinding body 4 in the transverse plane in relation to the profile 2 and relative to the device 1 automatically aligns.
  • the contact element 13, which is equipped as a carriage with a sliding surface, can be placed against the side surface 10 of the profile 2, while another contact element 14, designed as a roller, is supported from above against the running surface 3 to record the height, so that the two contact elements 13, 14 together form a reference for the alignment of the grinding wheel 4 and the carrier 11 aligns itself automatically due to an adjustable pretensioning force F in the transverse plane in relation to the profile 2 and in relation to the device 1.
  • a superimposed reversing movement of the grinding body 4, which can be driven to rotate or oscillate about its axis of rotation 6, with its grinding surface 5 when grinding the profile 2, can also be implemented, n.
  • the carrier 11 of the grinding body 4 is used to initiate a superimposed movement during the rotating or oscillating movement of the grinding wheel 4 parallel to the central longitudinal plane 7 of the profile 2 is designed to be movable in a reversing translational manner. Due to this translational movement of the grinding body 4 superimposed on the rotational movement, it reaches each surface section of the profile 2 several times, even if the vehicle carrying the device follows the course of the profile 2 at a normal speed of its own.
  • the grinding surface 5 of the grinding body 4 does not only reach a rail section once, but travels over it several times, so that very good surface qualities can be achieved.
  • the axes of rotation 6, which are inclined relative to one another at an angle (p), ensure that the material removed is transported away from the grinding gap and cannot accumulate. Thanks to the efficient processing and the high material removal, the rotational speed can be reduced and thus, in addition to wear, flying sparks can also be reduced , while at the same time the relative speed between the surface of the profile 2 and the abrasive body 4 is increased.
  • the rotation can preferably also be controlled in such a way that the rotational speed of the grinding body 4 is increased in the area of the reversal points of the reversing movement.
  • the rotational speed of the rotating movement is reciprocally adapted to the translatory movement. Since the translational movement is also superimposed by the vehicle's own movement along the profile 2, the translational speed is added when moving in the direction of travel and the translatory speed is subtracted when moving against the direction of travel, so that the speed of the grinding wheel 4 also is set differently depending on the leading or trailing phase.

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  • Mechanical Engineering (AREA)
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  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

L'invention concerne un procédé et un dispositif (1) pour rectifier un profil d'un rail de voie ferrée destiné à des véhicules ferroviaires au moyen d'une meule. Le support est monté mobile en translation sur le dispositif (1) dans un plan transversal au profil au moyen d'une glissière (12) et peut être appliqué contre le profil au moyen d'un élément de contact (13, 14), de sorte que le support s'oriente automatiquement avec la meule dans le plan transversal par rapport au profil et par rapport au dispositif (1). En outre, pendant le mouvement de rotation, le support de la meule peut être déplacé en translation de manière réversible parallèlement à un axe longitudinal du profil, de sorte qu'un segment de profil soit obtenue plusieurs fois par la meule et que le résultat de rectification soit sensiblement amélioré grâce au mouvement de translation.
PCT/EP2021/082672 2020-12-22 2021-11-23 Dispositif et procédé pour rectifier un profil WO2022135814A2 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US18/257,966 US20240084520A1 (en) 2020-12-22 2021-11-23 Device and method for grinding a profile
CN202180077742.2A CN116457532A (zh) 2020-12-22 2021-11-23 用于磨削型材的装置和方法
CA3202132A CA3202132A1 (fr) 2020-12-22 2021-11-23 Dispositif et procede pour rectifier un profil
AU2021406469A AU2021406469A1 (en) 2020-12-22 2021-11-23 Device and method for grinding a profile
JP2023537317A JP2024500798A (ja) 2020-12-22 2021-11-23 成形物を削正する装置及び方法
EP21820140.8A EP4267798B1 (fr) 2020-12-22 2021-11-23 Dispositif et procédé pour rectifier un profil
KR1020237018673A KR20230098639A (ko) 2020-12-22 2021-11-23 프로파일을 그라인딩하기 위한 디바이스 및 방법

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DE102020134657 2020-12-22
DE102020134657.3 2020-12-22

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WO2022135814A2 true WO2022135814A2 (fr) 2022-06-30
WO2022135814A3 WO2022135814A3 (fr) 2022-09-01

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US (1) US20240084520A1 (fr)
EP (1) EP4267798B1 (fr)
JP (1) JP2024500798A (fr)
KR (1) KR20230098639A (fr)
CN (1) CN116457532A (fr)
AU (1) AU2021406469A1 (fr)
CA (1) CA3202132A1 (fr)
WO (1) WO2022135814A2 (fr)

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DE2132220A1 (de) 1971-06-29 1973-01-11 Hermann Deising Vorrichtung zum profilschleifen der koepfe von eisenbahnschienen
DE2612173A1 (de) 1975-12-01 1977-06-08 Plasser Bahnbaumasch Franz Fahrbare schienenschleifmaschine
DE2801110A1 (de) 1977-02-21 1978-08-24 Plasser Bahnbaumasch Franz Fahrbare schienenschleifmaschine
US4275499A (en) 1978-08-09 1981-06-30 C. Delachaux Apparatus for removing the surplus welding material
DE3227343A1 (de) 1981-12-07 1983-06-23 Franz Plasser Bahnbaumaschinen-Industriegesellschaft mbH, 1010 Wien Fahrbare maschine zum abtragen von schienenfahrflaechenunregelmaessigkeiten, insbesondere schienenschleifmaschine
DE3222208A1 (de) 1982-06-12 1983-12-15 Dr. techn. Ernst Linsinger & Co GmbH, 4662 Steyrermühl Vorrichtung zum fraesen von schienenkoepfen
DE2841506C2 (de) 1977-12-30 1984-12-20 Franz Plasser Bahnbaumaschinen-Industriegesellschaft Mbh, Wien Gleisverfahrbare Maschine zum Abtragen von Unregelmäßigkeiten, Riffeln od.dgl. an Schienenkopfoberflächen
DD219230A5 (de) 1983-05-17 1985-02-27 Fredy Scheuchzer Maschine zum reprofilieren eines schienenkopfes
EP0148089A2 (fr) 1983-12-28 1985-07-10 Societe Des Anciens Etablissements L. Geismar Machine à reprofiler les rails usés
US4583893A (en) 1984-05-08 1986-04-22 Matix Industries (Societe Anonyme) Reprofiling device for rails through continuous milling
US4583895A (en) 1980-01-17 1986-04-22 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H Mobile machine for removing surface irregularities from a rail head of a railroad track
CH670667A5 (en) 1987-02-09 1989-06-30 Speno International Rail reshaping equipment for railway track - has chassis supported on wheels at one side and with endless grinding belt other side
EP0315704B1 (fr) 1987-11-07 1991-08-07 Les Fils D'auguste Scheuchzer S.A. Machine de meulage pour le reprofilage des champignons de rails
EP0444242A1 (fr) 1990-01-26 1991-09-04 Elaugen Gmbh Zürich, Schweiss- Und Schleiftechnik Machine à meuler les rails
DE4119525A1 (de) 1989-12-08 1992-12-17 Marcel Louis Levy Schleifbandvorrichtung zum egalisieren der schiene eines schienenstranges nach auftragsschweissung
DE69201811T2 (de) 1991-03-01 1995-09-28 Speno International Vorrichtung zur Wiederprofilierung von Eisenbahnschienen.
US5549505A (en) 1994-02-18 1996-08-27 Speno International Sa Installation for the reprofiling of tracks carried out on a railway line
EP0668398B1 (fr) 1994-02-18 1998-05-13 Speno International S.A. Installation pour le reprofilage des rails d'une voie ferrée
US5997391A (en) 1996-12-20 1999-12-07 Speno International Sa Device for the continuous and fine reprofiling in situ of the surface of the head of at least one rail of a railway track
WO2000058559A1 (fr) 1999-03-25 2000-10-05 Wilfried Scherf Dispositif de modules de meulage avec outils de meulage dans des machines a meuler les rails
WO2002006587A1 (fr) 2000-07-17 2002-01-24 Linsinger Maschinenbau Gesellschaft M.B.H. Procede de reprofilage d'au moins la surface d'un rail et dispositif y relatif
JP2003053655A (ja) 2001-08-13 2003-02-26 Nagoya Railroad Co Ltd 鉄道のレール上面部削正装置
EP0952255B1 (fr) 1998-04-20 2004-09-15 Schweerbau GmbH & Co. KG Véhicule ferroviaire muni d'un dispositif de fraisage des rails
DE202005012147U1 (de) 2005-08-03 2005-12-15 Möser Maschinenbau GmbH Bandschleifmaschine
EP1918458A1 (fr) 2006-11-03 2008-05-07 Mevert Maschinenbau GmbH & Co.KG Dispositif de meulage de profilés avec une bande abrasive en rotation
EP2177664A1 (fr) 2008-10-20 2010-04-21 Mevert Maschinenbau GmbH & Co.KG Procédé et dispositif destiné au traitement par enlèvement de copeaux d'une pièce usinée à l'aide d'une lame de coupe déterminée géométriquement
EP2525933B1 (fr) 2010-01-21 2015-03-04 Schweerbau GmbH & Co. KG Dispositif pour la rectification avec enlèvement de copeaux de la surface de roulement d'une tête de rail.
EP2791422B1 (fr) 2011-12-12 2017-07-19 Maschinenfabrik Liezen und Giesserei Ges.m.b.H. Véhicule ferroviaire avec dispositif de guidage des outils d'usinage

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111926638A (zh) * 2020-09-18 2020-11-13 山东华盛中天工程机械有限责任公司 锂电垂直钢轨打磨机

Patent Citations (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2132220A1 (de) 1971-06-29 1973-01-11 Hermann Deising Vorrichtung zum profilschleifen der koepfe von eisenbahnschienen
DE2612173A1 (de) 1975-12-01 1977-06-08 Plasser Bahnbaumasch Franz Fahrbare schienenschleifmaschine
DE2801110A1 (de) 1977-02-21 1978-08-24 Plasser Bahnbaumasch Franz Fahrbare schienenschleifmaschine
DE2841506C2 (de) 1977-12-30 1984-12-20 Franz Plasser Bahnbaumaschinen-Industriegesellschaft Mbh, Wien Gleisverfahrbare Maschine zum Abtragen von Unregelmäßigkeiten, Riffeln od.dgl. an Schienenkopfoberflächen
US4275499A (en) 1978-08-09 1981-06-30 C. Delachaux Apparatus for removing the surplus welding material
US4583895A (en) 1980-01-17 1986-04-22 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H Mobile machine for removing surface irregularities from a rail head of a railroad track
DE3227343A1 (de) 1981-12-07 1983-06-23 Franz Plasser Bahnbaumaschinen-Industriegesellschaft mbH, 1010 Wien Fahrbare maschine zum abtragen von schienenfahrflaechenunregelmaessigkeiten, insbesondere schienenschleifmaschine
DE3222208A1 (de) 1982-06-12 1983-12-15 Dr. techn. Ernst Linsinger & Co GmbH, 4662 Steyrermühl Vorrichtung zum fraesen von schienenkoepfen
DE3222208C2 (de) 1982-06-12 1985-03-28 Dr. techn. Ernst Linsinger & Co GmbH, Steyrermühl Verfahrbare Vorrichtung zum Fräsen von Schienenköpfen
DD219230A5 (de) 1983-05-17 1985-02-27 Fredy Scheuchzer Maschine zum reprofilieren eines schienenkopfes
EP0148089A2 (fr) 1983-12-28 1985-07-10 Societe Des Anciens Etablissements L. Geismar Machine à reprofiler les rails usés
US4583893A (en) 1984-05-08 1986-04-22 Matix Industries (Societe Anonyme) Reprofiling device for rails through continuous milling
CH670667A5 (en) 1987-02-09 1989-06-30 Speno International Rail reshaping equipment for railway track - has chassis supported on wheels at one side and with endless grinding belt other side
EP0315704B1 (fr) 1987-11-07 1991-08-07 Les Fils D'auguste Scheuchzer S.A. Machine de meulage pour le reprofilage des champignons de rails
DE4119525A1 (de) 1989-12-08 1992-12-17 Marcel Louis Levy Schleifbandvorrichtung zum egalisieren der schiene eines schienenstranges nach auftragsschweissung
EP0444242A1 (fr) 1990-01-26 1991-09-04 Elaugen Gmbh Zürich, Schweiss- Und Schleiftechnik Machine à meuler les rails
DE69201811T2 (de) 1991-03-01 1995-09-28 Speno International Vorrichtung zur Wiederprofilierung von Eisenbahnschienen.
US5549505A (en) 1994-02-18 1996-08-27 Speno International Sa Installation for the reprofiling of tracks carried out on a railway line
EP0668398B1 (fr) 1994-02-18 1998-05-13 Speno International S.A. Installation pour le reprofilage des rails d'une voie ferrée
EP0668397B1 (fr) 1994-02-18 1998-05-20 Speno International S.A. Installation pour le reprofilage des rails d'une voie ferrée
US5997391A (en) 1996-12-20 1999-12-07 Speno International Sa Device for the continuous and fine reprofiling in situ of the surface of the head of at least one rail of a railway track
EP0952255B1 (fr) 1998-04-20 2004-09-15 Schweerbau GmbH & Co. KG Véhicule ferroviaire muni d'un dispositif de fraisage des rails
WO2000058559A1 (fr) 1999-03-25 2000-10-05 Wilfried Scherf Dispositif de modules de meulage avec outils de meulage dans des machines a meuler les rails
WO2002006587A1 (fr) 2000-07-17 2002-01-24 Linsinger Maschinenbau Gesellschaft M.B.H. Procede de reprofilage d'au moins la surface d'un rail et dispositif y relatif
JP2003053655A (ja) 2001-08-13 2003-02-26 Nagoya Railroad Co Ltd 鉄道のレール上面部削正装置
DE202005012147U1 (de) 2005-08-03 2005-12-15 Möser Maschinenbau GmbH Bandschleifmaschine
EP1918458A1 (fr) 2006-11-03 2008-05-07 Mevert Maschinenbau GmbH & Co.KG Dispositif de meulage de profilés avec une bande abrasive en rotation
EP2177664A1 (fr) 2008-10-20 2010-04-21 Mevert Maschinenbau GmbH & Co.KG Procédé et dispositif destiné au traitement par enlèvement de copeaux d'une pièce usinée à l'aide d'une lame de coupe déterminée géométriquement
EP2525933B1 (fr) 2010-01-21 2015-03-04 Schweerbau GmbH & Co. KG Dispositif pour la rectification avec enlèvement de copeaux de la surface de roulement d'une tête de rail.
EP2791422B1 (fr) 2011-12-12 2017-07-19 Maschinenfabrik Liezen und Giesserei Ges.m.b.H. Véhicule ferroviaire avec dispositif de guidage des outils d'usinage

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EP4267798C0 (fr) 2024-07-31
CN116457532A (zh) 2023-07-18
AU2021406469A9 (en) 2024-10-03
WO2022135814A3 (fr) 2022-09-01
KR20230098639A (ko) 2023-07-04
AU2021406469A1 (en) 2023-06-15
EP4267798B1 (fr) 2024-07-31
JP2024500798A (ja) 2024-01-10
EP4267798A2 (fr) 2023-11-01
CA3202132A1 (fr) 2022-06-30
US20240084520A1 (en) 2024-03-14

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