Apparatus for milling a molded part, assigned method and reference body

Abstract

The present invention relates to a mobile device for milling track profiles, particularly configured as a rail vehicle. The device comprises a milling cutter body with a plurality of cutting tips (4) that is rotatable about a rotation axis (2). Several cutting tips (4) can be fixed independently of one another in their respective receiving compartments using a plurality of clamping bodies. To adjust the cutting tips (4), the fluid pressure is varied by a displacement body (11) until each cutting tip (4) abuts with a predetermined force against a reference body (13) used as a counter-receiver. The plungers (7) of the adjustment means (8) that act on the cutting tips (4) can be operated independently of one another by the respective displacement bodies (11).

Description

[Technical field]

[0001] The invention relates to a mobile device for milling profiles, in particular track rails, configured for rail vehicles, with a convex running surface and profile-defining flanks, in particular configured as rail vehicles, which is mobile in a feed direction along the profile and which comprises at least one milling body arranged on a support, which can be driven for rotational movement about a rotation axis and has a number of cutting tips, at least some of which are force-connectively and releasably fixed in their respective receiving parts by means of at least one clamping body against stops acting or supporting in the circumferential direction as counter-bearings.Furthermore, the invention relates to a method and a reference body for use in the device. [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 adversely affects the contour of the running surface of the rail head.

[0003] Wear-dependent post-processing is necessary to eliminate the corrugations or corrugations that occur on the running surface of the track rail during running operation, which cause the wheels of the vehicle to vibrate, which disturbs the quiet running of the vehicle, causes excessive wear on the track superstructure and the vehicle, and produces a whistling 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 side by side and one behind the other, with some of the grinding wheels being inclined according to the original profile of the rail head. This grinding method allows a better approximation to the original profile of the rail head.

[0005] Also known are reprofiling units which are applied to the rail surface on the end side and preferably bear at an inclined angle to the rail surface to be reprofiled.

[0006] 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 counter-rotatably drivable face mills, the rotation axes of which run in a common plane and the grinding areas of which overlap one another transversely to the longitudinal direction of the rail head.

[0007] In order to increase the machining speed, it is known, for example from DE 32 22 208 A1, to use milling tools, the cutting edges of which in several axial groups distributed around the circumference of the cutter head reproduce the rail head profile.

[0008] However, due to the arched cross-sectional profile of some of the cutting edges of the milling tool resulting from such flat milling, corrugations are produced on the surface of the rail head in the longitudinal direction of the rail, with the surface quality deteriorating as the feed speed increases due to the increased spacing between successive cutting edges.

[0009] WO 02 / 06587 also 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 having six or more milling tracks arranged side by side in the longitudinal direction of the rail.

[0010] 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.

[0011] Furthermore, devices are known in which the rail head is machined by means of a so-called rail planer, for example from DE 28 41 506. A disadvantage of planer machining, especially in comparison with milling methods, is the relatively long machining times due to the need for multiple passes over the rail section to be machined.

[0012] Austrian patent specification 400863 describes a device for the post-machining of rail heads by grinding using a tool with a rotating movement guided along a machining strip, in which the cutting edge is held on a support forming a link of an endless link chain guided around a diverting wheel.

[0013] WO 2020 / 190498 relates to a method for grinding rails, in which removal amounts are determined based on data on the physical state of each rail and the desired rail profile, from which individual grinding profiles for each rail segment are generated, also taking into account the configuration of several grinding modules and the individual grinding targets of several grinding modules. The customized grinding pattern may include determining the maximum operating speed at which the rail grinding machine passes over the rail.

[0014] In the milling tools for gear cutting known from the background art, the cutting tips are arranged, for example, in a horizontal position, so that they rest with their main surface on a support and can be fixed by means of fastening screws through the through-holes of the cutting tips (throw-away tips) in combination with a spacer plate for height adjustment. For example, eight cutting tips cover the entire cross-sectional profile, where the cutting tips are offset in the circumferential direction and therefore engage one after the other. When machining the track rail with a milling tool, a large amount of material removal is achieved, but the surface characteristics created in this way require further machining by reworking. In contrast, with the known reworking methods, the amount of material removal achieved is less than in milling, but higher feed rates can be achieved during reworking, so that in practice, depending on the respective peripheral conditions, both milling and reworking methods are used.

[0015] It is therefore now common to machine rails in one operation using a milling machine to reduce machining marks, such as grinding corrugations or trace marks, that occur on the milled surface. [Prior art documents] [Patent documents]

[0016] [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. 2841506 [Patent Document 11] Austrian Patent No. 400863 [Patent Document 12] International Publication No. 2020 / 190498 Summary of the Invention [Problem to be solved by the invention]

[0017] The object of the present invention is to provide a means by which extremely high demands on precision can be met when milling profiles, in particular track rails designed for rail vehicles, and in particular to reduce the deviations that occur to a few thousandths of a millimeter, so that reworking of the milled profiles can be dispensed with. [Means for solving the problem]

[0018] This problem is solved according to the invention by a device with the features of claim 1. Further developments of the invention can be seen from the dependent claims.

[0019] According to the invention, therefore, a device is provided in which at least some cutting tips can be displaced radially and / or axially, in particular steplessly, in their respective receiving parts by means of a pressure-transmitting fluid, in particular by means of a hydraulic fluid, such as hydraulic oil, by means of a radially or axially movable and / or deformable adjusting means (which for this purpose can have, for example, at least one plunger that is in particular translatable), and can be fixed in the adjusted position in a force-locking manner without changing the orientation by means of a clamping body. According to the invention, it is now possible for the first time to reliably meet the high demands imposed on the track rail in order to avoid undesired wavy patterns, during downtimes in machining of the profile, by means of a milling cutter body with cutting tips arranged on the circumferential or end side, without post-machining and in particular post-working by grinding, which was in fact unavoidable up to now. In this case, machining of the profile can be carried out with deviations of less than one hundredth of a millimeter. In principle, with such an improved milling process according to the invention, the inherent technical advantages, such as a high removal capacity in milling and, in particular, low heat generation during machining, compared to grinding processes, are maintained without limitation. Moreover, unlike the grinding method, the amount of material removed can be adjusted as a predetermined cutting depth. The amount of material removed can be measured in various ways at different tracks or parts of the cross-sectional profile of the rail. Thus, the amount of material removed can be limited, for example, precisely to the areas of the cross-sectional profile of the track rail that require further processing, so that the amount of material removed can possibly be reduced overall. Furthermore, in this case, the resulting removed material is collected without delay, so that undesired material deposits on the track are avoided.

[0020] The small tolerances obtained according to the invention cannot be achieved by the known means of compensating for the height or adjusting the relative radial position of various, in particular adjacent, cutting edges of the same milling body by means of spacer disks. In fact, for practical reasons, the use of spacer disks would not be possible to compensate for deviations in the range of a few thousandths of a millimeter. In contrast, according to the invention, the individual position adjustment of the various cutting tips by one or more pistons or plungers of the adjustment means by the pressure change of a pressure-transmitting fluid that is set to displace the plunger and is directly or indirectly related to the displacement of the plunger creates the conditions for such a precise adjustment means that could not be achieved by a purely mechanical adjustment or fixing of the cutting tips.

[0021] It has been found that the functional separation between, on the one hand, the displacement of the cutting tip to the desired target position, which can be achieved by means of an adjustment means, and, on the other hand, the clamping connection and thus stepless fixation of the cutting tip in this adjusted position using the clamping body, creates the conditions for meeting such high precision requirements.

[0022] Furthermore, a relatively small space requirement of the device is achieved, since the adjusting means acting on the cutting tips are connected to the pressure generating means, which are, if necessary, spatially separated from the line connection, exclusively by a line connection for pressure transmission fluid, so that a compact construction form of the adjusting means can be realized. Furthermore, as a result, the device has a low self-weight and requires only a small constructional design of the milling body. Furthermore, good access is therefore achieved, due to the pressure generating means being arranged spatially separated from the respective cutting tips. Due to the small space requirement, it is actually possible to distribute a larger number of cutting tips around the circumference in the respective tracks than was previously customary or possible in the area present, i.e. in particular on the circumference of the milling body. Then, since the feed per cutting tip is limited when machining profiles, a correspondingly larger number of cutting tips can also increase the feed around the circumference of the milling body, so that it is also possible to increase the feed rate without the undesired disadvantages of undesired corrugation when machining profiles.

[0023] For the understanding of the invention, it is further important to realize that the adjustment means is not limited to a movable plunger, which in a general structural design can be displaced translationally in a cylinder to different positions depending on the pressure. On the contrary, the adjustment means can cause the displacement of the cutting tip by a mere elastic deformation, in view of the small adjustment distance of the cutting tip to reach the target position. In this way, with little effort, a closed system with a pressure-transmitting fluid for displacing the cutting tip can be formed. This system can even be dispensed with a movable plunger. In practice, for this, in a broad sense, each expansion or extension body is suitable, which has correspondingly suitable deformation characteristics and can be deformed by the pressure-transmitting fluid against an elastic restoring force.

[0024] In a practical embodiment of the invention, the cutting tip fitted into the respective receiving part rests on at least one, preferably two hydraulic plungers or pistons of the adjusting means. The pressure difference required for the displacement is generated by the adjustment body as a displacement member being introduced, for example screwed, into the line volume containing the pressure-transmitting fluid, and a displacement or deformation of the adjusting means is brought about due to the pressure increase in the pressure-transmitting fluid, the adjustment distance of the adjustment body being controllable or regulatable by the adjustment distance or torque.

[0025] A particularly advantageous embodiment of the invention is achieved in that, in milling cutter bodies for gear cutting, the cutting tip assumes a radial orientation in the receiving section with its main axis and is radially aligned with its end face facing away from the cutting edge on a support of the receiving section for the cutting tip which is kinematically connected to the adjustment means, or, in milling cutter bodies for face milling, correspondingly assumes an axial orientation in the receiving section with its main axis.

[0026] In this case, one or preferably several identically configured adjusting means may be provided per receiving part or cutting tip, which can furthermore be controlled together or separately, in particular by means of a pressure-transmitting fluid communication, so that the desired target position of the cutting tip can thus be adjusted with the desired reproducible accuracy.

[0027] The adjustment or adaptation of the fluid pressure of the pressure transmission fluid may be obtained by means of a pump, in particular a compressor, and may be maintained by operating a shut-off mechanism. In contrast, a variant of the device according to the invention is particularly practical, in which the device for adjusting the fluid pressure of the pressure transmission fluid and for actuating the actuation means for displacing the cutting tip has at least one adjustable displacement body acting on the pressure transmission fluid, the displacement body in particular varying the line volume of the fluid line containing the pressure transmission fluid. In a simple variant, the displacement body is formed by a part of a threaded pin, so that only a pivoting movement is required to vary the fluid pressure, the adjustment distance being controlled or regulated by a torque.

[0028] In this case, of course, one may utilize the principle of hydraulic pressing, according to which forces act proportionally on the respective surfaces, so that the adjusting body or displacement member has a relatively small cross section and a large cross-sectional area is transmitted to the plunger, resulting in a large acting force of the adjusting means or plunger.

[0029] A variant of the device according to the invention has proved to be particularly advantageous, in which a number of cutting tips are arranged in parallel tracks, each assigned to a part of the cross-sectional profile of the molding. Thus, different, possibly overlapping, parts of the cross-sectional profile can be machined with the respective desired cutting depth. In this case, in fact, it is possible, possibly, to omit the fixing of all cutting tips according to the invention and fix some cutting tips that are less relevant to the cross-sectional profile in a conventional manner.

[0030] Furthermore, it is particularly practical in this case if a number of, in particular all, cutting chips arranged on adjacent parallel tracks of a milling cutter body for gear cutting have a circumferential offset from one another or, in the case of a milling cutter body for surface milling, an angular offset from one another, so that a uniform distribution of the cutting edge action of the cutting chips is achieved.

[0031] Another variant of the device according to the invention, which is also particularly advantageous, is realized in that the clamping body is adjustable by means of a screw connection which is designed to fix or decouple the clamping body by means of opposite rotation directions. The screw connection, designed as a spindle, which is provided in part with a reverse thread for this purpose, not only allows the cutting tip to be quickly fixed in the desired position, but also allows it to be loosened and removed from the receiving part if necessary. Furthermore, this screw connection, which is provided with a left-hand thread and a right-hand thread, also makes it easy to set a predetermined fixing force acting on the clamping body.

[0032] The device may advantageously be configured as a face mill or plane mill with the cutting tips arranged on the end side and as a plain mill or hob with cutting tips on the circumference of the milling body. In a further variant of the device according to the invention, the cutting tips of the milling body are adjustable by the adjustment means in the respective receiving part only in a predefined region of the track and / or cross-sectional profile of the milling body, in which the cross-sectional profile and / or the cutting edge form an acute angle of less than 45° with the rotation axis of the milling body configured as a hob or plane mill, or in which the cross-sectional profile and / or the cutting edge form an angle of more than 15° with the rotation axis of the milling body configured as a face mill.

[0033] Basically, the milling cutter body configured as a hob cutter or a flat milling cutter has a concave design that matches the contour of the cross-sectional profile. This allows milling to be performed in the area of ​​the lateral portion of the cross-sectional profile and the cutting tip assigned to this portion, which is arranged at an angle between 15° and 90° to the cross-sectional profile. The milling can achieve a machining quality that corresponds to that of a face milling cutter in terms of the relative orientation of the cutting tip to the surface of the rail to be machined. Conversely, the fixing of the cutting tip according to the invention can also be used for correspondingly concavely shaped flat milling cutters, in particular in those parts where the cutting edge forms a corresponding angle with the transverse plane relative to the axis of rotation.

[0034] The object of the invention is further achieved in a method for positioning, adjusting and / or calibrating at least some cutting tips relative to the respective receiving part of the device by means of a translatable adjusting means, in which the adjusting means are displaced by a pressure-transmitting fluid, the fluid pressure being changed by an adjusting body acting as a displacement member, so that the adjusting means are adjusted until the cutting edge of the respective cutting tip facing away from the adjusting means reaches the desired target position. In this case, the cutting tips are displaced in a particularly stepless manner in the radial direction and are force-lockedly fixed in the adjusted radial position by the clamping body without changing the orientation. The adjusting means is loaded by the pressure-transmitting fluid and displaced as a function of the pressure, so that the position of the cutting tips kinematically connected to the adjusting means in the receiving part as a guide is adjusted. The fixing of the cutting tips is finally effected by the clamping body, which in a manner known per se fixes the cutting tips in a clamping manner, preferably force-lockedly and releasably to a circumferentially supporting stop. A suitable pressure-transmitting fluid is, for example, hydraulic oil.

[0035] The maintenance or adjustment of the desired target position of the cutting plate can be detected or monitored by a non-contact measuring system. Particularly preferably, in accordance with a variant of the method according to the invention, a number of cutting tips are moved with a predefined force, one after the other or simultaneously, by means of the respective adjusting means, against a convex reference body in accordance with the cross-sectional profile to be formed, and adjusted with high precision. The reference body corresponds to the target profile to be formed of the molding with respect to the associated cross-sectional profile. It has now been found that by feeding the cutting tips in a particularly force-controlled manner against the reference body by means of the adjusting means, a more than predictably precise adjustment of the target position can be made, in particular for adjacent cutting tips, for which no measurement values ​​need to be recorded. Furthermore, the adjustment of the cutting tips requires only a small manual effort, so that operating errors are largely excluded. The displacement of the individual cutting tips can be made according to a predefined sequence, with spatially spaced, in particular non-adjacent cutting tips being adjusted one after the other.

[0036] As a result, this part of the cross-sectional profile can be finished without needing remachining, while the remaining part of the cross-sectional profile retains dimensions that are subsequently removed by a plane milling. The milling is preferably performed in the same direction relative to the profile as the forward movement of the vehicle supporting the device, with machining in the opposite direction not being excluded.

[0037] Such a reference body for use in the device and / or for carrying out the method is of convex design and serves as a counter-support for at least some cutting tips in a predefined relative target position with respect to the device, in which the reference body has a number of cavities, in particular designed for a tool for manipulating the clamping body, through which the clamping body is fixed and the adjusted position can be fixed with the tool. In this case, the invention makes use of the realization that the displacement of the various cutting tips with respect to the reference body as a counter-support is not only easily possible, but is also subject to smaller deviations than the adjustment of a specific position, which is to be monitored by measurement technology. The cutting tips are thus moved with a predefined force relative to the reference body according to the cross-sectional profile to be formed and can thus be adjusted with high precision. Preferably, the reference body has cavities, through which the clamping body is fixed and the adjusted position of the cutting tips can be ensured with the tool.

[0038] The invention allows for various embodiments, one of which is illustrated and described below in order to more clearly illustrate its basic principles. [Brief description of the drawings]

[0039] [Figure 1] 1 shows a perspective view of a milling cutter body of a device according to the invention, having a plurality of cutting tips; [Diagram 2] FIG. 2 shows a perspective view of the milling cutter body in an open state with a cutting tip disposed on the alignment surface. [Diagram 3] FIG. 2 is a perspective view of the milling cutter body as viewed from the rear side. [Figure 4] FIG. 2 shows a side view of a milling cutter body with a reference body for aligning a cutting tip. [Diagram 5] 5 is a longitudinal sectional view through the milling cutter body and the reference body taken along line VV in FIG. 4 . [Figure 6] 13 shows a cross-sectional side view of a variant of a milling cutter body having paired adjustment means connected via a fluid channel. [Figure 7] 4 shows a cross-sectional side view of a further variant of the milling cutter body, in which the adjustment means is centrally connected with the reference body; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0040] 1 shows an apparatus 1 for milling profiles, which is movable along the longitudinal extension of the profile to be processed (not shown). The apparatus 1 has a milling cutter body 3 with a number of radial cutting tips 4 which are capable of a rotational movement about a rotation axis 2 which can be seen in FIG. 5. The individual cutting tips 4 can be preloaded independently of one another in respective receiving parts 5 by means of a number of clamping bodies 6, each in a force-connected manner, against stops (not shown).

[0041] All the various cutting tips 4 can be adjusted by the two plungers 7 of the adjustment means 8 according to the embodiment shown and described in detail later, by changing the pressure of the pressure transmission fluid acting on the plunger 7 and displacing the plunger 7 based on this pressure change of the pressure transmission fluid.

[0042] For this purpose, the cutting tip 4 is mounted with the side of the cutting tip 4 facing away from the cutting edge 9 on a support 10 in the receiving part 5 which is kinematically connected to the adjustment means 8 .

[0043] In this way, a translational displacement of the cutting tip 4 to the desired target position is achieved by the adjustment means 8, while the position of the respective cutting tip 4 thus adjusted is fixed in a clamped manner and therefore steplessly by the clamp body 6.

[0044] To increase the fluid pressure of the pressure-transmitting fluid, a displacement body 11, shown in Figures 5 and 6, which acts on the pressure-transmitting fluid, is displaced in a fluid channel 12 filled with the pressure-transmitting fluid. For this purpose, the displacement body 11 is partly connected with a self-sealing thread, not shown, in a corresponding threaded reception in the milling cutter body 3, so that adjustment to the desired position can be performed manually with little effort, for example by means of a torque wrench.

[0045] For the adjustment, the fluid pressure is changed by the displacement body 11, so that the adjustment means 8 is adjusted until the cutting edge 9 of the respective cutting tip 4, which is opposite the adjustment means 8, reaches the desired target position in which the respective cutting tip 4 abuts with a defined force against the reference body 13 shown in Figures 4, 5 and 7. In this case, the reference body 13 of the device 1 serves as a counter-support for all cutting plates 4. After the respective cutting tip 4 has reached the defined target position, the clamping body 6 can be operated through a cavity 14 provided in the reference body 13, so that the cutting tip 4 can be fixed without the need to remove the reference body 13 beforehand.

[0046] In figures 5 to 7 different variants of the device 1 are shown. In figure 5 one variant can be seen, in which two hydraulically separated plungers 7 of the adjusting means 8, each with a supply 15, are each operable by a separate displacement body 11. Due to the asynchronous movement of the plungers 7 independently of one another, the cutting tip 4 placed on the plungers 7 can thus be inclined at an adjustable angle with respect to a transverse plane to the axis of rotation 2, if required.

[0047] 6 and 7, the pressure acting on the two plungers 7 of the cutting tip 4 is consistent and constant. For this purpose, two displacement bodies 11 are likewise provided, but acting in parallel on the communicating fluid lines of a common fluid channel 12, so that the fluid pressures are consistent. The two displacement bodies 11 therefore act in parallel on two plungers 7 which are supplied with pressure-transmitting fluid via a common supply 15, one of the two displacement bodies 11 being configured in this case for coarse adjustment and the other for fine adjustment.

[0048] 7 shows yet another variant in which the same pressure is applied simultaneously to all plungers 7 and, accordingly, to all cutting tips 4 movable thereby, via a central supply 15 of pressure-transmitting fluid. Thus, in conjunction with the reference body 13 shown, an internal equalization occurs and this variant allows a simple and rapid adjustment of all cutting tips 4 in practice, since the preload on the reference body 13 is identical. This application relates to the invention described in the claims, but also includes the following as other aspects. 1. A movable device (1) for milling a molded object having a running surface and a side surface, in particular a track rail designed for a rail vehicle, comprising: The device (1) comprises at least one milling body (3) which is movable along the longitudinal extension of the molding in the feed direction and which can be driven for rotational movement about a rotation axis (2) and which has a number of cutting tips (4), at least some of the cutting tips (4) being capable of being preloaded in a force-locking manner against a counter-bearing configured as a stop for fixing by means of at least one clamping body (6) in a respective receiving part (5), The device (1), characterized in that at least some of the cutting tips (4) are radially and / or axially displaceable within their respective housings (5) by means of adjustment means (8) and can be fixed in an adjusted position by means of a clamp body (6), the adjustment means (8) being configured to be movable and / or deformable by a pressure-transmitting fluid. 2. The device (1) as claimed in claim 1, characterized in that the cutting tip (4) has a main axis oriented radially or axially in the receiving part (5) and is mounted on a support (10) of the receiving part (5) on the side opposite the cutting edge (9) of the cutting tip (4) which is kinematically connected to the adjustment means (8). 3. 3. The device (1) according to claim 1 or 2, characterized in that a plurality of support parts (10) of the same and / or different container parts (5) can be loaded together by a pressure-transmitting fluid. 4. 4. At least one of the devices (1) according to claims 1 to 3, characterized in that the device (1) comprises at least one adjustable displacement body (11) acting on the pressure transmission fluid to adjust the fluid pressure of the pressure transmission fluid. 5. 5. At least one of the devices according to claims 1 to 4, characterized in that the cutting tips (4) are arranged in parallel tracks, each of which is assigned to a part of the cross-sectional shape of the molding. 6. 6. The device according to claim 1, wherein a plurality of, in particular all, cutting tips (4) arranged in adjacent parallel tracks have an offset relative to one another in the circumferential direction of the milling body (3). 7. 7. The device according to at least one of claims 1 to 6, characterized in that the clamping body (6) is adjustable by means of a threaded connection configured to fix or decouple the clamping body (6) by means of opposite rotation directions. 8. A method for adjusting at least some cutting tips (4) of at least one of the devices (1) according to 1 to 7 above with respect to their respective receiving parts (5) of said devices (1), comprising displacing the adjusting means (8) by a pressure transmitting fluid by changing the fluid pressure by means of a displacement body (11) acting as a displacement member, thereby adjusting the adjusting means (8) until the cutting edge (9) of each cutting tip (4) opposite the adjusting means (8) reaches a desired target position. 9. 9. The method according to claim 8, characterized in that a plurality of cutting tips (4) are moved by means of respective adjustment means (8) so as to strike the reference body (13) with a predetermined force. 10. A reference body (13) for use in at least one of the devices (1) as described above in 1 to 7 and / or for carrying out the method as described above in 8 or 9, characterized in that the reference body (13) is configured convexly and is used as a counter-receiver for at least some cutting tips (4) in a predetermined target relative position with respect to the device (1), the reference body (13) having a plurality of cavities (14) which are set up in particular for a tool for manipulating the clamping body (6). [Explanation of symbols]

[0049] 1 device 2 Rotation axis 3 Milling cutter body 4 Cutting tip 5. Storage section 6 Clamp body 7 Plunger 8 Adjustment means 9 Cutting Edge 10 Support part 11 Push-out body 12 Fluidic Channels 13 Reference Body 14 Vacant Space 15 Supply section

Claims

1. A mobile device (1) for milling a molded object having a running surface and a side surface, in particular a track rail designed for a rail vehicle, comprising: The device (1) comprises at least one milling body (3) which is movable along the longitudinal extension of the molding in the feed direction and which can be driven for rotational movement about a rotation axis (2) perpendicular to the surface to be machined and which has a plurality of cutting tips (4) radially therethrough, at least some of the cutting tips (4) being capable of being preloaded in a force-locking manner against a counter-bearing configured as a stop for fixing by means of at least one clamping body (6) in a respective receiving part (5), 1. The device (1), characterized in that at least some of the cutting tips (4) have main axes which occupy an axial orientation of the rotation axis (2) in the respective receiving parts (5) and are displaceable in the axial direction of the rotation axis (2) in the respective receiving parts (5) of the cutting tips (4) by means of adjustment means (8) and can be fixed in an adjusted position by means of a clamping body (6), the adjustment means (8) being configured to be movable and / or deformable by a pressure-transmitting fluid, and in that a plurality of adjustment means (8) are respectively provided for each cutting tip (4), which are movable and / or deformable independently of one another.

2. The device (1) described in claim 1, characterized in that the accommodating portion (5) has a support portion (10), the cutting tip (4) is placed on the support portion (10) of the accommodating portion (5) on the side opposite the cutting edge (9) facing the molded object in the axial direction of the rotation axis (2), and an adjustment means (8) acts on the support portion (10).

3. 3. Device (1) according to claim 1 or 2, characterized in that several supports (10) of the same and / or different receiving parts (5) can be loaded together by a pressure transmitting fluid.

4. The device (1) according to any one of claims 1 to 3, characterized in that the device (1) comprises at least one adjustable displacement body (11) acting on the pressure transmission fluid in order to adjust the fluid pressure of the pressure transmission fluid.

5. 5. The device according to claim 1, wherein the cutting tips (4) are arranged in parallel tracks, each of which is assigned to a portion of the cross-sectional profile of the molding.

6. 6. An apparatus according to claim 1, characterized in that a number of, in particular all, cutting tips (4) arranged in adjacent parallel tracks have an offset in the circumferential direction of the milling cutter body (3) relative to one another.

7. 7. The device according to claim 1, wherein the clamping body (6) can be operated by means of a tool to fix or release the cutting tip (4) by rotating it in the opposite direction.

8. A method for adjusting at least some cutting tips (4) of a device (1) according to any one of claims 1 to 7 relative to their respective receiving parts (5) of said device (1), comprising displacing the adjusting means (8) by a pressure transmitting fluid by changing the fluid pressure by means of a displacement body (11) acting as a displacement member, thereby adjusting the adjusting means (8) until the cutting edge (9) of each cutting tip (4) opposite the adjusting means (8) reaches a desired target position.

9. 9. A method according to claim 8, characterized in that a number of cutting tips (4) are moved by means of respective adjustment means (8) so that they strike the reference body (13) with a defined force.

10. A reference body (13) for use in the device (1) according to any one of claims 1 to 7 and / or for carrying out the method according to claim 8 or 9, characterized in that the reference body (13) is designed convex and serves as a counter-receiver for at least some cutting tips (4) in a predetermined target relative position with respect to the device (1), the reference body (13) having a plurality of cavities (14) which are set up in particular for a tool for manipulating the clamping body (6).

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