Apparatus with a rotatably drivable milling body

Abstract

The invention relates to an apparatus, in particular a mobile one, for grinding a profile (3), in particular the rails of a track body, comprising a rotatably drivable milling body (4) with a number of cutting edge supports each with a geometrically defined cutting edge (2). The apparatus comprises a number of cutting edge supports (S1) movable relative to the milling body (4), which are radially displaced relative to the milling body (4) and guided along a flat track (8) by at least one actuating body (7) while the cutting edges (2) engage in the profile (3). Additionally, during the rotational orbital movement of the milling body (4), a first or second functional position is set, in which in the first functional position only a first group of movable cutting edge supports (S1) of a trajectory (18) engages with the forming (3), and in the second functional position only a second group of a plurality of stationary cutting edge supports (S2) arranged on the milling body (4) of the same trajectory (18) engages with the forming (3).

Description

[Technical field]

[0001] The invention relates to a device, in particular a mobile device, for grinding features, in particular rails of a track body, with a freely rotatable milling body having a number of circumferentially arranged cutting edge supports, each with a geometrically defined cutting edge, for grinding features, in particular rails of a track body, the features having a transverse profile with a central region forming a running surface and at least a convex edge region, the device having cutting edge supports movable relative to the milling body, the cutting edge supports being arranged so as to be radially displaceable relative to the rotation axis of the milling body by means of at least one adjustable working body in order to set different working positions during the engagement of the cutting edges of the respective movable cutting edge support on the feature, so that the cutting depth of the cutting edges can be changed by the adjustable working body during the machining of the workpiece, this being achieved in that, during the rotating orbital movement of the milling body, the working body periodically comes into contact with a cam-shaped design with an inclined portion of the cutting edge support, whereby, in addition to the rotational movement, a continuous radial displacement of the cutting edges takes place periodically, as a result of which the cutting depth can be adjusted by means of the working body. [Background technology]

[0002] Due to the relatively high axle loads and high running speeds, the rails are often loaded up to the yield point of the rail material and are therefore subjected to wear which has a detrimental effect on the transverse profile, particularly in the region of the running surface of the rail head.

[0003] In order to remove corrugations or wavy areas that occur on the running surface of the track rail during running operation, post-processing according to wear is necessary, which causes vibrations in the wheels of the vehicle, which disturb the quiet running of the vehicle, causes excessive wear of the track superstructure and the vehicle, and generates running noise.

[0004] For this purpose, methods are known for machining, for example, railroad rails, in which a number of rotating grinding wheels are used, which are arranged next to each other and one behind the other, with some of the grinding wheels being inclined according to the original contour of the rail head. By means of such grinding methods, a better approximation to the original contour of the rail head is achieved.

[0005] So-called cup-type grinding devices are also known, which engage on their end side against the rail surface and preferably bear at an inclined angle to the rail surface to be graded.

[0006] So-called sliding stones are also used to grind the heads of railway rails. In this case, grinding cars are used, on the underside of which grinding stones are arranged and guided under pressure over the rail surface. Sliding stone grinding is based on the oscillating translation of a grinding body along the rail while the vehicle is moving. Due to the contouring of the grinding body, which is adapted in shape even when worn during use, good surface quality and dimensional stability are in principle achieved.

[0007] EP 2525933 relates to a device for post-machining the running surface of a rail head by grinding, which has a carriage guided along the rail head, in which a number of machining tools are configured as face mills which can be driven to rotate counter-intuitively, the rotation axes of the face mills extending in a common plane and the grinding areas of the face mills overlap one another transversely to the longitudinal direction of the rail head.

[0008] In order to increase the machining speed, it is known, for example from DE 32 22 208 A1, to use milling tools whose cutting edges, distributed around the circumference of the cutter head in several axial groups, reproduce the rail head contour.

[0009] However, due to the curved grinding process of some of the cutting edges of the milling tool resulting from such flat milling, undulations occur on the surface of the rail head in the longitudinal direction of the rail, in which case as the feed speed increases the chip removal intervals of successive cutting edges become larger, resulting in poor surface quality.

[0010] Furthermore, WO 02 / 06587 describes a method for reshaping at least a convex part of the rail head cross-sectional profile of a rail by means of a plain milling cutter with six or more milling trajectories located next to each other in the longitudinal direction of the rail.

[0011] Further devices for post-machining by grinding, in particular for milling the heads of rails laid on a track, are described in EP 0 952 255 B1, US 5 549 505 B1, EP 0 668 398 B1, EP 0 668 397 B1, US 4 275 499 B1 and EP 0 148 089 A1 and DE 3 222 208 A1.

[0012] Furthermore, devices are known in which the rail head is machined by means of a so-called rail planer, for example from DE 2 841 506. Disadvantages of planer machining, especially in comparison with milling methods, are the higher forces required in the feed direction, the longer chips and / or the longer downtimes.

[0013] Austrian patent specification 400863 describes a device for the post-machining of rail heads by a grinding process using an orbiting tool guided along a machining strip, in which the cutting edges are held in a support and form the links of an endless link chain guided around a diverting wheel.

[0014] To achieve a flat surface, EP 2 177 664 A1 of the type mentioned at the outset proposes moving the cutting edges along a straight trajectory during the grinding process of the workpiece, so that no further processing, such as grinding, is necessary. From EP 2 177 664 A1 it is further known to operate the cutting edges of several trajectories of the transverse profile separately, for example also on the outer trajectories assigned to the lateral sides of the rail, by assigning separate working bodies to the different trajectories.

[0015] For example, when processing the rails in the area of ​​crossings, wing rails and switches at turnouts, one or more tracks can be deactivated so that no processing and therefore no material removal takes place in the parts of the transverse profile that correspond to the tracks. Such essentially undesirable removal leads to unsuitable geometry of the transverse profile of the turnout at other points. For example, in the area of ​​the crossing, two rails meet, so that no distinction is made in this area between the lateral and central parts of the transverse profile.

[0016] In practice, the transversely contoured surfaces are usually provided with no inclination or convex geometry in the central region of the running surface relative to the edge regions.

[0017] In practice, it has been found to be disadvantageous that in the edge region of the cross profile of the turnout, the deactivation of the corresponding trajectory according to the principle of the technical idea disclosed in EP 2 177 664 A1 may temporarily interrupt the machining. However, in practice, a simple deactivation of the corresponding cutting edge does not result in a continuous progression of the cross profile during milling. Instead, deviations in the cross profile section, for example with undesired jumps, may occur. In addition, the moulding remains unmachined in this cross profile section, so that defects, especially near the surface, such as cracks, cannot be eliminated. [Prior art documents] [Patent documents]

[0018] [Patent Document 1] European Patent No. 2525933 [Patent Document 2] DE 3222208 A1 [Patent Document 3] WO 02 / 06587 [Patent Document 4] European Patent No. 0952255 [Patent Document 5] U.S. Patent No. 5,549,505 [Patent Document 6] European Patent No. 0668398 [Patent Document 7] European Patent No. 0668397 [Patent Document 8] U.S. Pat. No. 4,275,499 [Patent Document 9] European Patent Application Publication No. 0148089 [Patent Document 10] German Patent No. 3222208 [Patent Document 11] German Patent No. 2841506 [Patent Document 12] Austrian Patent No. 400863 [Patent Document 13] European Patent Application Publication No. 2177664 Summary of the Invention [Problem to be solved by the invention]

[0019] The object of the present invention is to make it possible to process various moldings using the device. Furthermore, it is desirable to be able to produce different cross-profile geometries during the processing of the moldings. Furthermore, a processing method should be provided that allows different cross-profile geometries to be produced during the processing of the moldings. [Means for solving the problem]

[0020] The first problem is solved according to the invention by a device according to the characterizing part of claim 1. Further developments of the invention can be seen from the dependent claims.

[0021] According to the invention, a first, second or further functional position of the movable cutting edge support is adjustable by means of at least one actuating body, in which in the first functional position only the cutting edges of a first group of the movable cutting edge support of one or more trajectories engage the molding, and in the second or further functional position only the cutting edges of a second or further group of the plurality of cutting edge supports arranged on the milling body of the same one or more trajectories engage the molding, the first and second groups of cutting edge supports being not identical. In this case, the invention starts from the realization that in connection with some of the possible trajectories for machining different transverse profile sections, respectively different shapes and geometries can be produced by means of the various functional positions with the at least one actuating body. For this purpose, within a certain trajectory, different groups of cutting edge supports are activated or deactivated by the actuating body, so that continuous but different transverse profile geometries are produced over the entire transverse profile. This transverse profile geometry can be adapted to special requirements for the transverse profile, especially in the region of the turnout, which differs from other stretches of the profile.

[0022] In the context of the present invention, the radial displacement is not limited to increasing distance from the rotation axis of the milling body, but rather a desired temporary planar movement trajectory of the cutting edge can be achieved by superposition of a rotational movement and a radial movement directed inwards or outwards relative to the rotation axis.

[0023] For this purpose, according to a particularly advantageous embodiment of the device according to the invention, at least some cutting edge supports of the second group are arranged stationary on the milling body. At least some cutting edge supports are arranged stationary on the milling body during machining, distributed over the circumference of at least one path of the milling body, so that the cutting edges of these cutting edge supports only engage if the cutting edges of the movable cutting edge supports are not displaced radially outwards, i.e. in particular completely deactivated. For example, for this purpose, in at least one path, movable cutting edge supports and fixed cutting edge supports are arranged alternately on the circumference of the milling body to form different groups. In this case, the movable cutting edge supports project radially relative to the fixed cutting edge supports in the radially outwardly displaced position. In the branching, the movable cutting edge supports of these paths, for example the lateral paths, are deactivated, so that the cutting depth and thus the amount of scraping of the fixed cutting edges is reduced. The transverse profile is therefore raised as a result more than in the case of alternative machining by the cutting edge of the movable cutting edge support. In the other functional position, the scraping is limited to the movable cutting edge support due to the larger radial extent. Thus, for the first time, different formations can be formed as required in the same trajectory, which in each case have a uniform and continuously extending transverse profile geometry.

[0024] In this case, the invention is not limited to, for example, a combination of movable and stationary cutting edge supports, but rather all the cutting edge supports of the different groups can be designed to be movable and can be selectively displaced by separate actuating bodies, so that during milling, different profiles are produced, with the advantage of so-called rotary planar milling, i.e. milling with a partially flat and parallel path of motion to the longitudinal extent of the profile, and the associated improved machining quality for different groups of cutting edge supports and the corresponding different transverse profile geometries.

[0025] For this purpose, the different groups of movable cutting edge carriers have, for example, convex shapes as contact surfaces for the respective working bodies, which are arranged in different transverse planes relative to the rotation axis of the milling body, so that several adjacently positioned working bodies assigned to the same trajectory can be realized, which, together, preferably are not wider than the transverse contour portion to be machined by the cutting edge carriers assigned to this trajectory, in an orientation parallel to the rotation axis of the milling body.

[0026] The device is also not limited to two groups of cutting edge carriers in each trajectory. Rather, in principle, three or more groups can be realized, in which case the mechanical displacement by the contacting actuating bodies is associated with additional constructional expenditure, depending on the existing space situation. In the case of three or more groups, the movable cutting edge carriers can be radially displaced by suitable actuating bodies, which are preferably arranged on the milling body and thus configured as actuators rotating together with the actuating bodies, in which case the control unit is also used for wireless transmission of control commands, in particular for the actuating bodies or actuators. The control commands can also be generated taking into account section information, in particular the position of the turnout and the associated parameters, so that automatic machining can be performed.

[0027] In practice, tests have already proven suitable when the device has a number of cutting edge supports arranged side by side in different tracks adjacent in the direction of the rotation axis in parallel transverse planes of the milling body, with movable cutting edge supports arranged in at least one track assigned to the running surface of the transverse profile and different groups of movable and stationary cutting edge supports arranged in at least one track assigned to the lateral and / or central edge regions of the transverse profile. The selective milling for producing different geometries of certain transverse profile sections is thus limited to the transverse profile regions on both sides of the running surface, so that in areas of high quality requirements, such as those applicable to the running surface, all cutting edge supports are used to produce the same geometry, and accordingly a larger number of cutting edge supports distributed over the circumference are provided for the running surface contour, which engage the profile at smaller intervals than the cutting edge supports of the selectively actuatable group.

[0028] The milling body preferably has a number of cutting edge supports arranged at a distance from one another in the circumferential direction. A further embodiment, which is also particularly advantageous, is achieved in that adjacent cutting edge supports of different trajectories are arranged offset in the circumferential direction, with the offset between adjacent cutting edge supports being distributed over the circumference and / or being coincident between the cutting edge supports of several parallel trajectories. In the context of the invention, the uniform offset of the cutting edge supports of adjacent trajectories is greater than zero. As a result, the cutting edge supports of the same trajectory and the cutting edge supports of adjacent trajectories engage the profile one after the other when the milling body moves around, which can further improve the machining quality.

[0029] Furthermore, a particularly advantageous embodiment of the invention provides that the different movable cutting edge supports and / or stationary cutting edge supports of the same group of trajectories are alternately and / or evenly distributed in the circumferential direction. MillingThis is also achieved by the fact that the cutting edge carriers of the different groups are arranged on the milling cutter body, so that uniform material removal is achieved by the respective groups. Preferably, the different cutting edge carriers of the groups are identical in number and are arranged uniformly distributed around the circumference of the milling cutter body.

[0030] The working bodies can act on the respective movable cutting edge carriers by kinematic coupling. For this purpose, the working bodies can be arranged radially inward in the milling body, which is configured as a hollow body or annularly, so that the movable cutting edge carriers are moved radially by periodic contact with the working bodies. In this case, the working bodies can be configured as eccentrics, for example as cams, so that the cutting edge carriers are correspondingly moved radially. Preferably, the eccentrics are arranged on a camshaft, which is driven for a rotational movement together with the milling body at a fixed rotational speed ratio, for example by kinematic coupling.

[0031] Furthermore, the displacement of the cutting edge support can be realized by means of a slider mechanism of the working body. Particularly preferably, the contact surface has a cam-shaped feature, in particular with a ramp, against which the working body rests in a sliding and / or free-rolling manner during machining, the feature having a defined geometry, which is invariable during milling, but is, if necessary, exchangeable, and which is, for example, integrally connected to the cutting edge support on the side of the cutting edge support facing away from the cutting edge. The working body rests periodically against the feature during the rotation of the milling body, whereby means known per se for reducing friction, for example a sliding or rolling contact surface, can be provided.

[0032] In this case, the multi-axis relative movement of the working body parallel to the transverse plane of the milling body allows optimal adjustment performance when forming the desired overlapping movement trajectories of the respective cutting edges. Furthermore, actuators, for example piezo actuators, can also be advantageously used as working bodies.

[0033] The cam-like feature can be configured as a wedge- or ramp-shaped contact surface, by which the cutting edge carrier is displaced in the radial direction, whereby a non-linear relationship arises for the radial displacement with respect to the planar path of motion of the cutting edge to be formed, so that according to a particularly preferred embodiment of the invention, the cam-like feature is configured at least partially concave or convex or extends non-parallel to the tangent of the orbital path of the cutting edge, so that a planar path of motion of the cutting edge is ensured when the rotational movement and the radial displacement are superimposed.

[0034] When movable cutting edge supports with different trajectories or different groups of cutting edge supports with the same trajectory are in operation, it has already proven to be particularly rational if the device has a number of independently adjustable working bodies which are configured to be adjustable relative to one another, so that different radial extents are achieved.

[0035] Of course, the cutting edges may have a shape adapted to the surface geometry of the moulding to be formed, so that according to a preferred embodiment, the cutting edges of at least some of the cutting edge supports have a concave shape.

[0036] According to the invention, the radial displacement of the cutting edge support is not limited to a translational movement, but rather the movable cutting edge support can be arranged for this purpose, for example, on a lever arm, in particular such that the pivot axis of the lever arm moves parallel to the rotation axis of the milling body.

[0037] The object of the invention is further achieved in a method for operating the device, in which in a first or second functional position, by means of at least one working body in the same trajectory, selectively the cutting edges of a first group of the movable cutting edge support or the cutting edges of a second group of cutting edges arranged on the milling body are engaged with the molded part by radially moving them relative to one another and / or relative to the milling body. In particular, in order to form different transverse profile geometries of the same molded part during machining, at least one working body is actuated, whereby a first functional position of the movable cutting edge support, in which only the cutting edges of the first group of the movable cutting edge support in at least one trajectory engage with the molded part, or a second or further functional position, in which only the cutting edges of a further group of the cutting edge supports arranged on the milling body in the same one or more trajectories engage with the molded part, is selectively set. According to the invention, a number of cutting edge supports distributed around the circumference of the milling body, which may be assigned to the same or to several trajectories, are grouped together and can be activated selectively or possibly even in combination with one another, so that different cross profile geometries of the forming part can be formed within the same trajectory.

[0038] Basically, the cutting edge supports of the second group can be arranged on the milling body in a stationary manner during machining in the operating state, while the cutting edges of at least the cutting edge supports of the first group can be moved during engagement with the part during milling, and can be moved or displaced radially inward or outward in addition to the rotary movement. In this case, a further improvement in the machining quality is achieved according to the principle of rotary planar machining, by having cutting edge supports of both groups that can be displaced by different working bodies in each case.

[0039] The invention allows for various embodiments, one of which is illustrated and described below in order to make its basic principles more easily understandable. [Brief description of the drawings]

[0040] [Figure 1]1 shows a side view of a device according to the invention with a milling body as support for a plurality of cutting edge supports during milling of a profile; [Diagram 2] 3 shows an enlarged cross-sectional view of different groups of movable and stationary cutting blade supports of the device; [Diagram 3] 1 shows a side view of a device having a plurality of cutting edge supports arranged next to each other in parallel trajectories. [Figure 4] A first functional position for displacing all movable cutting edge supports and a second functional position for displacing movable cutting edge supports assigned to several trajectories are shown in an enlarged view. [Diagram 5] 5 shows in enlarged view two possible transverse profiles corresponding to the different functional positions shown in FIG. 4. [Figure 6] 1 shows an enlarged view of two cutting edge supports of different groups, which are independently movable relative to each other in the same trajectory. [Figure 7] 1 shows a plan view of multiple cutting edge supports arranged in six parallel tracks. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0041] The device 1 according to the invention for milling a profile 3 is explained in more detail below on the basis of the figures 1 to 7. The device 1 has a milling body 4 which can be driven rotatably about an axis 9 during machining. The milling body 4 serves as a support for a peripherally arranged cutting edge support S with respective cutting edges 2 for grinding the profile 3 configured as a rail of a track body. The task of milling is to smooth and restore the desired transverse contour, in particular the running surface for the rail wheels (not shown) of a rail vehicle, which is formed between the edge regions of the profile 3. A particular task of milling in this case is to largely avoid surface corrugations which, as a rule, cannot be completely avoided when machining with a plain milling cutter, in particular along the profile, in connection with the high feed rates of mobile devices.

[0042] In order to improve the machining quality, in a method also referred to as rotary planarization, on the one hand the cutting edge support S is moved together with the milling body 4 on a circular orbit 15 of the milling body 4 in the direction of the arrow 11. This movement of the cutting edge 2 here corresponds to the movement of the gear cutting. On the other hand, in addition, a movable cutting edge support S1 with the cutting edge 2 is periodically moved radially outwards on the milling body 4. For this purpose, the cutting edge support S1 is capable of translational movement relative to the milling body 4 in the respective receiving part 5. By the displacement of the cutting edge support S1 in the receiving part 5, the cutting edge 2 is moved parallel to the surface of the molding 3 for a certain period of time. The movement of the cutting edge 2 parallel to the surface of the molding 3 corresponds to the movement of the planarization known from the prior art. This temporarily parallel movement of the cutting edge 2 is achieved by the superposition of the orbital movement on the orbital path 15 and the movement of the cutting edge support S1 radially in the direction of the arrow 12 out of this orbital path 15. The superposition of the movements indicated by the arrow directions 11 and 12 results in a flat trajectory 8 of the working movement 16 of the cutting edge 2, shown in dashed lines in FIG.

[0043] The device 1 has several cutting blade supports S1 which are each movable in translation in the receiving part 5, and several stationary cutting blade supports S2. As shown in Figures 1 to 3, the several cutting blade supports S1, S2 are distributed one behind the other in the circumferential direction over the circumference of the milling body 4 and are arranged next to each other in several tracks 18, as can be seen in Figures 3 to 7. Each track 18 serves to machine a transverse contour of the forming 3.

[0044] The movable cutting edge supports S1 are movably arranged in respective receiving spaces 5 in the milling body 4 and each have a wedge- or cam-shaped feature 6 for radial displacement. During rotation of the milling body 4, the feature 6 of the respective cutting edge support S1 is moved along a working body 7 which is configured as a rotating body, which is freely rotatable or rotatably driven by a drive 19. When contact occurs between the working body 7 and the feature 6, the cutting edge support S1 is displaced by the working body 7 in the direction of the arrow 12 according to the wedge- or ramp-shaped geometry of the feature 6. The receiving spaces 5 have a restoring device 14, so that the cutting edge support S1 is displaced against a restoring force but is returned by the restoring device 14 to the starting position when the feature 6 is no longer in contact with the working body 7.

[0045] The milling body 4, which rotates about an axis 9, has a number of receptacles 5 arranged next to each other in the circumferential direction. For machining of the mould 3, by rolling or sliding of the working body 7 on the shaping 6, at least some of the cutting edge supports S1, which are guided in the receptacles 5, are periodically moved in the direction of the mould 3 while the cutting edges 2 engage in the mould 3.

[0046] As can be seen in particular in Figures 3 and 4, the device 1 according to the embodiment shown has two working bodies 7a, 7b arranged freely rotatably independent of one another on a shaft 10, in which case, of course, further working bodies are not excluded according to the invention. Via the shaft 10, the forces received by the working bodies 7a, 7b are transmitted in order to displace the cutting edge 2.

[0047] By changing the angular position α of the shaft 10, the position of the eccentric region 13 of the shaft 10 is changed, so that the working bodies 7b arranged on the shaft 10 or supported on the region 13 can no longer act on the assigned cutting edge supports S1 of the assigned trajectory 18, or can no longer act with the same amplitude. These cutting edge supports S1 are accordingly no longer displaced, or displaced to a lesser extent, so that the cutting edges 2 of these cutting edge supports S1 no longer engage the molding 3, and no milling takes place, or only a significantly limited milling takes place.

[0048] As can be seen in Figures 3 and 4, when the milling body 4 rotates completely, all cutting edge supports S1 assigned to the working bodies 7a are displaced once, while the cutting edge supports S1 assigned to the working bodies 7b are only displaced in the corresponding angular position α of the working bodies 7b, shown on the left side of the drawing in Figure 4.

[0049] 4, selectively, at least an angular position α′ of the actuating body 7b is adjustable, in which the movable cutting edge supports S1 are not displaced and therefore do not engage the molding 3. These movable cutting edge supports S1 are displaceable as required or adjustably as described and form a first group of movable cutting edge supports S1.

[0050] In addition to the first group of movable cutting edge supports S1, the milling body 4 may further have a second group of cutting edge supports S2 in the same track 18, which may be arranged in the circumferential direction, for example alternating with the cutting edge supports S1 of the first group. The sum of movable cutting edge supports 1 and the sum of stationary cutting edge supports S2 in the same track 18 may coincide or differ and may be adapted to the respective application.

[0051] The second group of cutting edge supports S2 are fixedly, but preferably exchangeably, secured in use to the milling body 4. In the first functional position, the stationary cutting edge support S2 is retracted relative to the movable cutting edge support S1 such that the cutting edges 2 of the stationary cutting edge support S2 cannot engage the molding 3. This first functional position and the resulting transverse contour of the cutting edge support S1 are shown on the left side of the drawing in FIG.

[0052] In contrast, a second functional position can be set by deactivating the actuating body 7b in the angular position α', in which only the cutting edges 2 of the stationary cutting edge supports S2 assigned to the second group engage the profile 3, since the movable cutting edge supports S1 are retracted relative to the stationary cutting edge supports S2. The second functional position and the resulting transverse profiles of the cutting edge supports S1 and S2 are shown on the right side of the drawing in FIG. 5. This makes it possible for the first time to produce different transverse profile geometries even during uninterrupted milling, in particular in different stretches of the profile 3, as may be required, for example, in the region of a turnout.

[0053] In addition, FIG. 6 shows a further embodiment of the device 1, in which two groups of different cutting edge supports S1, S8 are provided, which, unlike those shown in FIG. 2, are each configured as movable cutting edge supports S1, S8. For better understanding, FIG. 6 shows the different cutting edge supports S1, S8 next to each other. These cutting edge supports S1, S8 are actually arranged one behind the other in the circumferential direction, so that the cutting edges 2 selectively engage the molded part 3 in the same trajectory 18 during milling. As can be seen, the features 6, 6' of the cutting edge supports S1, S8 extend from different sides up to about half the width B of the cutting edge supports S1, S8, where the features 6, 6' of the different groups of cutting edge supports S1, S8 are arranged on different sides. Thus, the two working bodies 7, 7' which can be independently actuated according to the principle shown in figure 4 allow for independent displacement of different groups of cutting edge supports S1, S8 during machining in one and the same trajectory 18 along an approximately flat track 8. In other words, both groups of cutting edge supports S1, S8 in effect fulfill the prerequisites for rotary planar machining, so that a constant high machining quality is achieved, while nevertheless different transverse profile sections can be produced in one and the same trajectory 18 by using different cutting edge geometries of the cutting edges 2, 2' of the cutting edge supports S1, S8.

[0054] For this purpose, the working bodies 7, 7' are each arranged eccentrically on the shaft 10, so that a rotational movement of the shaft 10 selectively displaces the working body 7 or the working body 7', so that the cutting edge 2 of the cutting edge support S1 or the cutting edge 2' of the cutting edge support S8 engages in the molding 3 in the same trajectory 18. A possible selective actuation of the cutting edge support S1 or the cutting edge support S8 by the common working body is not shown, but the common working body can for this purpose be translated in the axial direction of the shaft 10 between the shown position of the working body 7 and the shown position of the working body 7'.

[0055] The different transverse profile shapes resulting from the selective activation of the cutting edge support S1 or the cutting edge support S8 correspond to the transverse profile shown in FIG. 5, in which, depending on the respectively movable cutting edge support S1, S8 used, the machining quality is correspondingly significantly increased.

[0056] 7 shows a part of the development of a milling body 4 with several cutting edges 2 arranged one behind the other and next to each other. The cutting edges 2 are assigned to several parallel trajectories 18, so that the formation of marks on the machined surface of the molded part 3 shown in FIGS. 1 to 3 is avoided. The milling body 4, which moves in the direction of the arrow 11, is made up of individual segments 17. The segments 17 can be removably fastened to the milling body 4. This application relates to the invention described in the claims, but also includes the following as other aspects. 1. A particularly mobile machine (1) for grinding a profile (3) with a transverse profile, in particular a rail of a track body, comprising a rotatably drivable milling body (4) having a number of cutting edge carriers (S, S1, S2, S8) each having a geometrically defined cutting edge (2, 2'), The device (1) includes a plurality of cutting edge supports (S1, S8) movable relative to a milling body (4), 1. An apparatus (1) in which the cutting blade supports (S1, S8) are arranged to be radially displaceable relative to the milling body (4) during the rotational orbital movement of the milling body (4) by the at least one working body (7, 7', 7a, 7b) in such a way that the cutting blade supports (S1, S8) are radially displaceable relative to the milling body (4) in order to set different working positions during the engagement of the cutting blades (2, 2') of the respective movable cutting blade supports (S1, S8) into the forming (3), by the at least one working body (7, 7', 7a, 7b), A first functional position and a second or further functional position can be set, in which in the first functional position only the first group of cutting edges (2, 2') of the movable cutting edge support (S1) of one or more tracks (18) engage with the molding (3), The device (1), characterized in that in the second or further functional position, only the cutting edges (2, 2') of the second or further group of cutting edge supports (S2, S8) arranged on the milling body (4) of the same trajectory or trajectories (18) engage with the molding (3). 2. The device (1) according to claim 1, characterized in that at least some of the cutting edge supports (S2) of the second group are fixedly arranged on the milling body (4). 3. The device (1) according to claim 1 or 2, characterized in that the first group of movable cutting edge supports (S1) and / or the further group of movable cutting edge supports (S8) are configured to be displaceable by the respective actuating bodies (7, 7'). 4. The device (1) has a plurality of cutting edge supports (S1, S2, S8) arranged side by side on different adjacent tracks (18) in the direction of the rotation axis (9), Only movable cutting edge supports (S1, S8) are arranged on at least one path (18) assigned to the running surface of the transverse profile, 4. The device (1) according to claim 1, characterized in that on at least one trajectory (18) assigned to the lateral and / or central edge regions of the transverse profile, groups of different movable cutting edge supports (S1, S8) and stationary cutting edge supports (S2) are arranged. 5. 5. The device (1) according to at least one of claims 1 to 4, characterized in that adjacent cutting edge supports (S1, S2, S8) of different trajectories (18) are arranged offset in the circumferential direction. 6. 6. The device (1) according to at least one of claims 1 to 5, characterized in that the different movable cutting edge supports (S1, S8) and / or stationary cutting edge supports (S2) of a group of identical trajectories (18) are arranged on the milling body (4) alternately and / or evenly distributed in the circumferential direction. 7. 7. The device (1) according to at least one of claims 1 to 6, characterized in that the cam-shaped shaping portion (6, 6') has an inclined portion against which the working body (7, 7', 7a, 7b) abuts so as to slide and / or roll periodically during processing. 8. 8. The device (1) according to at least one of 1 to 7 above, characterized in that the cam-shaped formation (6, 6') is at least partially formed concavely and / or convexly. 9. 9. The device (1) according to at least one of 1 to 8, characterized in that the device (1) has a plurality of actuating bodies (7, 7', 7a, 7b) which are independently adjustable with respect to one another. 10. A method for grinding a molded product (3) using at least one of the devices (1) according to 1 to 9, comprising the steps of: A method in which, during the grinding of a part (3), the cutting edges (2, 2') are periodically displaced relative to the axis (9) of the milling body (4) and thus move along a planar trajectory (8), 13. A method according to claim 12, characterized in that during machining of a moulding (3), in order to form different transverse profile geometries of the same moulding (3), at least one actuating body (7, 7', 7a, 7b) is actuated, whereby a first group of cutting edges (2, 2') of a movable cutting edge support (S1, S8) of at least one trajectory (18) or a second group of cutting edges (2, 2') of a plurality of cutting edge supports (S1, S2, S8) arranged on the milling body (4) of the same or a plurality of identical trajectories (18) engage into the moulding (3). [Explanation of symbols]

[0057] 1 device 2,2' cutting edge 3 Molded object 4 Milling body 5. Storage section 6, 6' Modeling section 7a, 7b, 7, 7' Working body 8 orbits 9 axis 10 Shaft 11 Arrow direction 12 Arrow direction 13 areas 14 Restoration Device 15 orbits 16 Work Exercise 17 Segments 18 Trajectory 19 Drive unit α, α' angular position B Width S, S1, S2, S8 Cutting edge support

Claims

1. A particularly mobile device (1) for grinding a profile (3) having a transverse profile, in particular a rail of a track body, comprising a rotatably drivable milling body (4) having a number of cutting edge carriers (S, S1, S2, S8) each having a geometrically defined cutting edge (2, 2'), The device (1) comprises a plurality of cutting edge supports (S1, S8) movable relative to a milling body (4); a device (1) in which the at least one working body (7, 7', 7a, 7b) is arranged to be radially displaceable relative to the milling body (4) during a rotating orbital movement of the milling body (4) by periodically contacting a shaped portion (6, 6') of the cutting blade support (S1, S8) with an inclined portion, so that the cutting blade support (S1, S8) is radially displaceable relative to the milling body (4) during the engagement of the cutting blades (2, 2') of the respective movable cutting blade support (S1, S8) into a molded part (3), A first functional position and a second or further functional position can be set, in which in the first functional position only the first group of cutting edges (2, 2') of the movable cutting edge support (S1) of one or more tracks (18) engages with the molding (3), The device (1), characterized in that in the second or further functional position, only the cutting edges (2, 2') of the second or further group of cutting edge supports (S2, S8) arranged on the milling body (4) of the same one or more trajectories (18) engage with the molding (3).

2. 2. The device (1) according to claim 1, characterized in that at least some of the cutting edge supports (S2) of the second group are arranged stationarily on the milling body (4).

3. 3. The device (1) according to claim 1 or 2, characterized in that the first group of movable cutting edge supports (S1) and / or the further group of movable cutting edge supports (S8) are configured to be displaceable by the respective actuating bodies (7, 7').

4. The device (1) has a plurality of cutting edge supports (S1, S2, S8) arranged next to each other in different adjacent loci (18) in the direction of the rotation axis (9), Only movable cutting edge supports (S1, S8) are arranged on at least one path (18) assigned to the running surface of the transverse profile, 4. The device (1) according to claim 1, characterized in that on at least one path (18) assigned to the lateral and / or central edge regions of the transverse profile, groups of different movable cutting edge supports (S1, S8) and stationary cutting edge supports (S2) are arranged.

5. 5. The device (1) according to claim 1, characterized in that adjacent cutting edge supports (S1, S2, S8) of different tracks (18) are arranged with a circumferential offset.

6. 6. The device (1) according to claim 1, characterized in that the different movable cutting edge supports (S1, S8) and / or stationary cutting edge supports (S2) of a group of identical trajectories (18) are arranged on the milling body (4) alternately and / or evenly distributed in the circumferential direction.

7. The device (1) according to any one of claims 1 to 6, characterized in that the cam-like shaped portion (6, 6') has an inclined portion against which the working body (7, 7', 7a, 7b) abuts in a cyclical sliding and / or rolling manner during processing.

8. 8. Device (1) according to any one of the preceding claims, characterized in that the cam-like formations (6, 6') are at least partially concave and / or convex in shape.

9. 9. Device (1) according to any one of the preceding claims, characterized in that the device (1) comprises a number of actuating bodies (7, 7', 7a, 7b) which are independently adjustable relative to one another.

10. A method for grinding a molding (3) using a device (1) according to any one of claims 1 to 9, comprising the steps of: A method in which, during the grinding of a part (3), a cutting edge (2, 2') is periodically displaced relative to an axis (9) of a milling body (4) and thus moves along a planar trajectory (8), 1. A method according to claim 1, further comprising the steps of: actuating at least one actuating body (7, 7', 7a, 7b) during machining of a molded part (3) in order to form different transverse profile geometries of the same molded part (3), whereby a first group of cutting edges (2, 2') of a movable cutting edge support (S1, S8) of at least one trajectory (18) or a second group of cutting edges (2, 2') of a plurality of cutting edge supports (S1, S2, S8) arranged on the milling body (4) of the same or a plurality of identical trajectories (18) engage the molded part (3).

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