Method for post-processing the roller

Abstract

The invention relates to a method for post-processing a roller (2) of a machine (3) by means of a processing machine (1) which comprises a carriage (8) having processing means and guide means for guiding the carriage (8), wherein the method comprises the following steps: - determining a first roller geometry at a first point (z1) of the roller (2); - determining a second roller geometry at a second point (z2) of the roller (2); - ascertaining a first distance (x1) of the processing machine (1) to the first point (z1) on the roller (2); - ascertaining a second distance (x2) of the processing machine to the second point (z2) on the roller (2); - calculating a conicity of the roller (2) and / or a skewed position of the processing machine (1) with respect to the roller (2) on the basis of the first and second roller geometry and the first and second distance (x1, x2); and - post-processing the roller (2) into a cylindrical shape taking into account the calculated conicity and / or skewed position.

Description

[0001] Method for post-processing the roller

[0002] The invention relates to a method for reworking a roller of a machine by means of a processing machine which comprises a carriage with processing means and guide means for guiding the carriage.

[0003] Those skilled in the art are familiar with oil mills used to press kernels, also known as oilseeds. During processing to press the oilseeds, the oilseeds go through several processes, one of which is flaking using a flaking machine. During flaking, the oilseeds are formed into thin flakes between two smooth rollers. The quality or even thickness of the flakes is essential for achieving a high oil yield, as this is of great economic importance to the oil mill. These rollers are usually made of cast steel and are more than one meter long and have a diameter of more than 400 millimeters. This makes these rollers very heavy and they form the heart of the flaking machine.

[0004] The rollers of flaking machines are subject to wear on their surfaces. Due to the high demands placed on the consistent thickness of the oilseed flakes, any wear on the rollers is problematic and negatively impacts the quality of the flakes. Therefore, the surface of the flaking rollers must be smoothed or refinished at regular intervals of every six months to a maximum of one year.

[0005] From AT 516 866 A1, for example, it is known to attach a processing machine directly to the machine. In this case, the guide rails of the processing machine are arranged as parallel as possible to the roller so that a carriage with a turning tool can move transversely to the roller for remachining. However, correctly arranging the processing machine in relation to the roller is a challenge for several reasons. Firstly, the processing machine is very heavy, so it usually takes a very long time, usually 3 to 4 hours, until the processing machine is positioned with sufficient accuracy in relation to the processing machine. Since the processing machine must also be positioned with great precision in relation to the roller, it often happens that the forces required to screw the processing machine to the machine are sufficient to move the processing machine out of the desired position.A further problem when adjusting the processing machine relative to the roll becomes apparent when the measuring methods customary for this purpose are considered, see, for example, DE 43 20 069 A1. This document teaches the attachment of dial gauges to the carriage in order to position the processing machine relative to the roll. Although the aim of this document is to arrange the guide rails parallel to the axis of the roll to be repaired, it is a finding of the invention explained below that this aim cannot be achieved in all cases using the measuring method described in DE 43 20 069 A1. Since this measuring method only scans the surface of the roll using the dial gauges, any conicity of the roll cannot be taken into account, so that the forming rails are not aligned relative to the roll axis, but rather relative to the roll surface. A conically deformed roll will therefore retain a conicity even after remachining.

[0006] The invention aims to overcome the disadvantages of the prior art and to create a method for reworking a roller in which, on the one hand, the adjustment process of the processing machine takes less time and, on the other hand, even more complex roller deformations can be reworked.

[0007] This aim is achieved by a method for reworking the roller of a machine by means of a processing machine comprising a carriage with processing means and guide means for guiding the carriage, the method being characterized by the following steps:

[0008] - Determining a first roll geometry, which is preferably a first diameter, a first circumference or a first roll circumference profile, at a first location on the roll,

[0009] - determining a second roll geometry, which is preferably a second diameter, a second circumference or a second roll circumference profile, at a second location on the roll,

[0010] - Determining a first distance of the processing machine to the first position of the roller,

[0011] - Determining a second distance of the processing machine to the second position of the roller,

[0012] - Calculating a conicity and / or an inclination of the processing machine with respect to the roller based on the first and second roller geometry and the first and second distance, and

[0013] - Remachining the roll into a cylindrical shape, taking into account the calculated conicity and / or misalignment. The method according to the invention makes it possible to remachine even conical rolls to bring the roll into a cylindrical state. Since the prior art adjustment methods only measured the orientation of the processing machine to the roll surface, the conicity of the roll could not be taken into account. As a result, the remachining of the roll produced a smooth, but still conical roll surface.

[0014] Furthermore, the method according to the invention can compensate for a misalignment of the processing machine without requiring manual or mechanical readjustment of the processing machine with respect to the roller. By determining the two roller geometries at two different locations and the two distances of the processing machine from the two locations on the roller, the conicity of the roller can be compensated simultaneously with the misalignment of the processing machine, i.e., two separate adjustment processes are not necessary.

[0015] Preferably, the roller is reworked by moving the machining means for rework with both a feed in the normal direction and a feed in the longitudinal direction to bring the roller into a cylindrical shape. In this case, no manual readjustment of the machining center is necessary, regardless of the taper of the roller or the misalignment of the machining center. Using this method, the entire assembly process of the machining center, including determination of the two roller geometries and distances, can be completed in approximately 30 minutes, and the rework can be carried out immediately afterwards. With a state-of-the-art adjustment method, in which only the respective distances to the roller surface are determined and a subsequent mechanical alignment of the machining center is carried out, adjustment processes typically take 3 to 4 hours.As an alternative to the above-mentioned method, the post-processing could also be carried out in the present invention without feed in the normal direction if the processing machine is mechanically aligned accordingly after calculating the conicity and misalignment, although the advantages explained do not occur here.

[0016] Preferably, the ratio of feed in normal direction to feed in longitudinal direction is calculated as (Xdiff + Ddiff) / (Zdiff), with

[0017] Xdiff = (xl-x2) where xl is the first distance and x2 is the second distance, Ddiff = (dl -d2) / 2, where dl is the first diameter and d2 is the second diameter, adjusted if necessary to the determined misalignment, and Zdiff = (zl'-z2'), where zl' is the position on the guide means from which the machining means reach the first point on the roll and z2' is the position on the guide means from which the machining means reach the second point on the roll. Ddiff represents the conicity of the roll and Zdiff the misalignment of the machining machine.

[0018] In this calculation method, the conicity is included in the calculation through the correction factor Ddiff, and the misalignment is included through the correction factor Xdiff. It is understood that the calculation method can also be modified to achieve essentially the same results, e.g., by setting z = z'.

[0019] Although the calculation steps and the adjustment of the feed rate can be performed manually, it is preferred if the processing machine comprises a control unit that calculates the feed rate of the processing means in the normal direction and the longitudinal direction and / or controls a drive of the carriage for feeding the processing means in the longitudinal direction and a drive of a feed carriage for feeding the processing means in the normal direction. This allows the method according to the invention to be automated as much as possible, with, for example, only the first and second roller geometries being measured manually. The control unit can therefore, in particular, comprise an interface into which the first and second roller geometries are manually entered.

[0020] In general, a circumference measurement using a vernier ruler is particularly suitable for determining the roller geometry, since, for example, a direct diameter measurement when the roller is installed is difficult to carry out.

[0021] To determine the first distance or second distance, it can be provided in particular that the carriage is moved in the longitudinal direction and the feed carriage in the normal direction until the processing means touch the first point or second point on the roller. In other words, the respective coordinates or control values ​​can be stored in a memory or passed directly to the control unit, from which the respective distances from the processing machine to the roller and also the distance between these two positions can be determined. For example, it can be specified that the processing means are in a zero position with the coordinates (x0, z0') when the carriage is on the far left of the guide means and the feed carriage is retracted, i.e. brought into a position at the maximum distance from the roller.When the machining tools come into contact with the first point on the roller, the machining tools can be in a first position (xl, zl'). When the machining tools come into contact with the second point on the roller, the machining tools can be in a second position (x2, z2'). In combination with the manually determined diameters dl, d2, these values ​​can be used to calculate the conicity, misalignment, and control for post-processing. Alternatively, the values ​​(xl, zl'), (x2, z2') could also be determined using other methods such as optical methods, in particular laser reflection methods, for example by mounting an appropriate measuring device on the carriage.

[0022] Furthermore, it is preferred if the steps of determining a first and second roll geometry, determining the first and second distances, calculating a conicity and / or an inclination, and reworking are repeated after the first reworking process. This has the advantage that even more complex measurement errors can be compensated for, since the roll surface is at least brought into a conical state in the first reworking process if the roll originally had an irregular roll geometry, such as an oval shape, at the two locations. Since such measurement errors no longer exist after the first reworking process, a more representative diameter measurement can be performed, so that after the second reworking process, a roll with a particularly high degree of accuracy in the cylindrical shape will be available.

[0023] To further improve the post-processing quality, the roller can be pressed into a predetermined position by a pressure unit of the processing machine during post-processing, and preferably also during the determination of the first and second distances. This eliminates play in the roller bearings during the post-processing process, allowing for better manufacturing tolerances.

[0024] In a further aspect, the invention relates to a processing machine for reworking a roll of a machine, wherein the processing machine comprises a carriage with processing means and guide means for guiding the carriage, wherein the processing means are designed to move the processing means to compensate for a conicity of the roll and / or a misalignment of the processing machine during reworking both with a feed in the normal direction of the guide means and with a feed in the longitudinal direction of the guide means in order to bring the roll into a cylindrical shape, wherein the conicity of the roll and / or the misalignment of the processing machine are calculated from: a first roll geometry, which is preferably a first diameter, a first circumference or a first roll circumference profile, at a first location on the roll, a second roll geometry, which is preferably a second diameter,a second circumference or a second roller circumference profile, at a second location on the roller, a first distance of the processing machine to the first location on the roller, a second distance of the processing machine to the second location on the roller.,

[0025] The processing machine according to the invention has the advantages explained above for the method and can be used with the same design variants.

[0026] These and further advantageous embodiments of the method according to the invention are explained in more detail below with reference to the figures.

[0027] Figure 1 shows the processing machine used in the method according to the invention in a perspective view.

[0028] Figures 2 to 5 show possible configurations in the post-processing method according to the invention in a plan view.

[0029] Figure 6 shows the use of a pressure unit to compensate for roller bearing play.

[0030] Figure 1 shows a processing machine 1 for reworking a roller 2 of a machine 3, which is a flaking machine of an oil mill. During operation, the two rollers 2 rotate towards each other to press oilseed through a gap 4 between the rollers 2, which, depending on the oilseed, has a width of, for example, 0.25 to 0.35 millimeters. According to this exemplary embodiment, the rollers 2 are 1.5 meters long, made of cast steel, and weigh several hundred kilograms. The surface of the rollers 2 was hardened during production to keep wear on the rollers 2 as low as possible. During flaking of the oilseed, the rollers 2 wear to the extent that depressions form in the surface of the rollers 2, as a result of which an oilseed lying in a depression is not sufficiently deformed or compressed.

[0031] The processing machine 1 is screwed to the counterplates 6 of the machine 3 by means of two brackets 5, which are attached to the processing machine 1. The processing machine 1 further comprises at least one, preferably two guides 7, which form guide means for guiding a carriage 8 in the longitudinal direction of the guide means. The guides 7 are arranged parallel or at an angle α (Figure 3) to the roller 2 when the processing machine 1 is fastened to the machine 3. Although the guides 7 could be adjusted using adjustment aids and, if necessary, washers, which are attached to the brackets 5 or between the brackets 5 and the guides 7, this is not absolutely necessary for the present invention. This ensures that the carriage 8 is guided by the guides 7 parallel or at an angle α to the longitudinal axis A of the roller 2.

[0032] The processing machine 1 further comprises a turning tool 9 or another processing means for reworking the roller 2. The turning tool 9 can preferably have a disc-shaped cutting edge and can be reused rotated around its own axis when the cutting edge becomes worn. The carriage 8 has a feed carriage 10 for adjusting the feed rate of the processing means in the normal direction of the guide means. The normal direction is usually perpendicular to the longitudinal direction.

[0033] The cutting depth of the turning tool 9 into the surface of the roller 2 can be adjusted using a first drive 11 of the feed slide 10. Alternatively, the feed slide 10 could also be moved in the x-direction by a handwheel.

[0034] The processing machine 1 further comprises a second drive 12 for uniformly moving the carriage 8 along the longitudinal direction of the guide means. The second drive 12 is preferably formed by a motor and a spindle drive 13. This ensures a particularly uniform movement of the carriage 8 during the reworking of the roller 2, thereby improving the quality of the reworked surface.

[0035] In order to rework the roller 2 in such a way that it has a uniform cylindrical surface after reworking, the method described below is used.

[0036] As indicated in Figure 2, a first diameter dl is initially measured at a first point zl in the longitudinal direction of the roller 2. This is usually done manually using a vernier ruler for measuring the circumference. A circumference measured in this way can then be divided by it in order to obtain an average diameter at this point on the roller 2. Alternatively, the diameter could also be measured directly, although this is not practical in many cases due to the size of the roller 2. In still other cases, a sensor unit such as a laser reflection system, for example on the guide means, could be provided at the respective point in order to measure the roller profile there, from which the diameter could in turn be determined if necessary. In general, it can therefore be said that a first roller geometry is determined at the first point zl in the longitudinal direction of the roller 2.From this, the first diameter dl can be determined mathematically if necessary.

[0037] Subsequently, a second diameter d2 or, generally, a second roll geometry is measured at a second location z2 in the longitudinal direction of roll 2. This measurement can be performed as described above for the first diameter dl or for the first roll geometry.

[0038] The first location z1 and the second location z2 are typically located in edge regions of that section of the roller 2 where it is to be cylindrically shaped. Preferably, the first location z1 and the second location z2 are located directly at the edges or at a predetermined distance from the respective edge of that section of the roller 2 that is to be cylindrically shaped. With reference to Figure 5, it is clear that it is not always necessary or desirable to form the entire roller 2 cylindrically, since edge regions can also be chamfered. The chamfering can be carried out by manual post-processing or automatically using the control unit described herein.

[0039] Based on the first diameter dl and the second diameter d2, it can now be determined whether the roller 2 is conically deformed. For example, a correction value Ddiff can be determined, which is calculated as Ddiff = (dl-d2) / 2. If the correction value is not zero, there is a conicity of the roller 2 that needs to be compensated. This conicity can be compensated for if the processing means are moved in the normal direction, i.e. in the x-direction, during a travel in the longitudinal direction of the guide means, i.e. in the z'-direction. The ratio of feed in the normal direction to feed in the longitudinal direction is calculated as Ddiff / Zdiff (the direction of the feed in the normal direction can be easily determined by a person skilled in the art).Zdiff is calculated as zl'-z2', where zl' is the position on the guide means from which the processing means reach the first point zl on roller 2, and z2' is the position on the guide means from which the processing means reach the second point z2 on roller 2. Since in the example of Figure 2 the guide means are "coincidentally" parallel to the longitudinal axis of roller 2, zl = zl' and z2 = z2'. As an alternative to setting a ratio of the feed in the normal direction to a feed in the longitudinal direction, the guide means could also be offset at an angle to roller 2, although this entails greater adjustment effort. Figure 3 shows that not only a conicity as shown in Figure 2 can be compensated, but also an inclination of the processing machine 1 or the guide means with respect to roller 2.For this purpose, the distance xl of the processing machine 1 to the first location zl, at which the first roll geometry was determined, is determined. Since the guide means are arranged at an inclination relative to the roll 2, the distance xl is measured from the location zl' on the guide means in the normal direction to the guide means.

[0040] In the simplest case, the machining means are moved on the carriage 8 along the guide means to the first position zl', after which the machining means are moved by means of the feed carriage 10, e.g., manually, to the first position zl on the roller 2, until the machining means touch the roller 2. The path traveled by the machining means can be output as a distance xl from the feed carriage 10 and subsequently displayed visually or stored in a memory. In alternative variants, the distance xl could also be determined, for example, using a laser distance measuring device located on the guide means.

[0041] After the first distance x1 has been determined at the first point z1', the carriage 8 with the machining means is moved to point z2' and the machining means are displaced by means of the feed carriage 10 towards the roller 2 until they touch the second point z2 on the roller 2. The determination of the distance x2 can thus be carried out as above for the first distance x1. It is also clear that in practice it is easier to determine the distance z1'-z2' on the guide means than the distance z1-z2 on the roller 2, although this would also be possible. The conversion from z1-z2 to zl'-z2' can be carried out by means of simple coordinate transformation or can be omitted since the difference is negligible at small angles α.

[0042] Based on the first distance xl and the second distance x2, it can now be determined whether the guide means are arranged at an angle α to roller 2. For example, a correction value Xdiff can be determined which is calculated from Xdiff = xl-x2. If roller 2 is cylindrical and the correction value is not zero, there is an inclination of the guide means with respect to roller 2 that needs to be compensated for. This inclination can be compensated for if the processing means are offset in the normal direction of roller 2, i.e. in the x-direction, during travel in the longitudinal direction of the guide means, i.e. in the z-direction. The ratio of feed in the normal direction to feed in the longitudinal direction is calculated as Xdiff / Zdiff Alternatively, the guide means could also be offset at an angle to roller 2, although this entails greater adjustment effort.

[0043] According to the invention, the two aforementioned measures can be combined as shown in Figure 4, taking into account that the measurements could show that the processing machine 1 could already be arranged parallel to the roller 2 (in which case the post-processing could take place as shown in Figure 2) or that the roller 2 could not have any conicity (in which case the post-processing could take place as shown in Figure 3).

[0044] Figure 4 shows that by means of the method according to the invention it is possible to carry out an inclination of the processing machine 1 with respect to the roller 2 at the same time as compensating the conicity of the roller 2.

[0045] As already described with regard to Figures 2 and 3, the first roller geometry, in particular the first diameter d1, is determined at a first location z1 on the roller 2, and the second roller geometry, in particular the second diameter d2, is determined at a second location z2. Consequently, the first distance xl and the second distance x2 to the roller 2 are determined at the first location z1' and the second location from which the machining means reach the first location z1 and the second location z2 on the roller 2, respectively. In order to compensate for the misalignment and the conicity simultaneously, the ratio of feed in the normal direction to feed in the longitudinal direction can be calculated as (Xdiff - Ddiff) / (Zdiff), where Xdiff, Dfifif and Zdiff are calculated as described above for Figures 2 and 3. If necessary, Ddiff can be subjected to a coordinate transformation to further take the misalignment into account, although this can be negligible, for example, at small angles.

[0046] In order to implement the above-mentioned post-processing as efficiently as possible in practice, it is advisable to use a control unit 20 by means of which both the feed in the longitudinal direction (z-direction) and the feed in the normal direction (x-direction) can be adjusted, for which purpose the control unit 20 can be connected to the first drive 11 and the second drive 12, as shown in Figure 1. The control unit 20 could, for example, comprise an interface (e.g. an HMI, Human Machine Interface) for entering the manually measured diameters dl, d2 and, if necessary, also for entering the distance zl-z2 (for the approximate determination of Zdiff) between the two points and / or the distances xl, x2. In practice, for example, two markings are applied to the roller 2, which correspond to the first point zl and the second point z2.At these points, the diameter dl and the second diameter z2, or generally the first and second roll geometries, are determined manually, which are then input into the control unit 20 via the interface. The control unit 20 can automatically calculate the correction factor Ddiff.

[0047] The processing means are then moved in the direction of the first marking by controlling the first drive 11 and the second drive 12 and are offset up to the roller 2 until they touch the roller 2 at the first point z1. The control unit 20 can store this position of the processing means as the first distance x1 and as the position at the first point z1' on the guide means. The processing means are then moved in the direction of the second marking and are offset up to the roller 2 until they touch the roller 2 at the second point z2. The control unit 20 can store this position of the processing means as the second distance x2 and as the position at the second point z2' on the guide means. The control unit 20 can calculate the factors Xdiff and Zdiff from this stored data.

[0048] After the factors Ddiff, Xdiff, and Zdiff have been calculated, the control unit 20 can fully automatically control the processing means or the first and second drives to rework the roller 2 such that it assumes a cylindrical shape after rework. It should be noted that the control unit 20 does not necessarily have to fully automatically control the processing means, since it could also output the required ratio of offset in the normal direction to offset in the longitudinal direction, for example, on a display device, after which a user could implement the offset in the normal direction, for example, using the handwheel.

[0049] Additional parameters could also be stored in the control unit 20, such as a removal depth for post-processing or a maximum feed in the longitudinal and / or normal directions. From the maximum removal depth, the control unit 20 could, for example, also determine whether one or more post-processing cycles are required. For example, if a maximum removal depth of 0.3 mm is stored, but the conicity of the roller 2 requires a removal of 0.5 mm to bring it into a cylindrical shape, the control unit 20 could, for example, control the processing means in two post-processing cycles without any measurements in between. The aforementioned method for post-processing the roller 2 results in a roller 2 that is as cylindrical as possible.Deviations from a cylindrical shape can, however, occur if the roller 2 does not originally have a circular cross-section at the first and / or second location z1, z2, or if other measurement errors exist. These errors can be compensated for if the aforementioned method is performed again after the initial reworking, i.e., the steps of determining a first and second roller geometry, determining the first and second distances x1, x2, calculating a conicity and / or an inclination, and reworking after the first reworking process are repeated once. This allows the roller 2 to be brought into a cylindrical shape within the required measurement accuracy.

[0050] If, for example, the roller 2 has an oval cross-section prior to implementation of the method according to the invention and the diameter of the roller 2 is determined indirectly via the circumference using a vernier ruler, a measurement inaccuracy arises when determining the conicity of the roller 2 or the misalignment of the processing machine. After the first remachining, however, the roller 2 will usually have a circular cross-section at all points, so that a subsequent circumferential measurement using the vernier ruler will produce a more representative result for the diameter. Therefore, remachining the roller 2 twice using the method according to the invention results in a roller 2 with particularly high manufacturing tolerances.

[0051] Further sources of error can be prevented, as shown in Figure 6, if the processing machine 1 has a pressure unit 21 which preloads the roller 2 in one direction during remachining and preferably already during the determination of the first and second distances x1, x2. The reason for this is that the rollers 2 are mounted in the machine 3 with a bearing clearance that is greater than the desired manufacturing tolerance. In other words, the shaft 2 would "float" in the roller bearing during rotation by the machine 3 in such a way that the maximum achievable manufacturing tolerance is that of the bearing clearance of the roller 2. For the purpose of simple explanation only and without restriction to specific bearing types, Figure 6 shows a rigid shaft 23 of the machine 3, which is located in a bearing 24 of the roller 2. Since the bearing 24 is larger than the shaft 23, movement of the roller 2 on the shaft 23 can occur.

[0052] This deficiency can be overcome according to the invention if the pressing unit 21 preferably preloads the roller 2 into a specific position in the bearing. As shown in Figure 6, the pressing unit 21 presses the roller 2 from bottom left to top right, so that the shaft 23 and bearing 24 are in a predefined position. However, the pressing direction is arbitrary, and the pressing unit 21 could also press the roller 2 horizontally toward the other roller 2. To prevent the two rollers 2 from touching each other during reworking, they are brought by the machine 3 into a so-called maintenance position, in which the mutual distance between the two rollers 2 is at least greater than the bearing clearance.

[0053] The pressing unit 21 is typically hydraulically operated. To ensure good contact with the roller 2, the pressing unit 21 can comprise two rollers 22, which rest against the roller 2 during the pressing process.

[0054] Finally, it should be noted that the roller geometries and distances between the processing machine and roller 2 could also be measured at more than two locations, which could potentially allow for even more precise post-processing of roller 2. It is easy for a person skilled in the art to expand the formula for calculating the feed ratio. In most cases, however, it is sufficient to consider two roller geometries and distances between the processing machine and roller 2.

Claims

Patent claims 1. A method for reworking a roller (2) of a machine (3) by means of a processing machine (1) which comprises a carriage (8) with processing means and guide means for guiding the carriage (8), the method being characterized by the following steps: - determining a first roller geometry, which is preferably a first diameter (dl), a first circumference or a first roller circumference profile, at a first location (zl) of the roller (2), - determining a second roller geometry, which is preferably a second diameter (d2), a second circumference or a second roller circumference profile, at a second location (z2) of the roller (2), - determining a first distance (xl) of the processing machine (1) to the first point (zl) on the roller (2), - determining a second distance (x2) of the processing machine (1) to the second location (z2) on the roller (2), - Calculating a conicity of the roller (2) and / or an inclination of the processing machine (1) with respect to the roller (2) based on the first and second roller geometry and the first and second distance (xl, x2), and - Remachining the roller (2) into a cylindrical shape taking into account the calculated conicity and / or misalignment.

2. Method according to claim 1, wherein the post-processing of the roller (2) is carried out in that the processing means for post-processing move both with a feed in the normal direction and with a feed in the longitudinal direction in order to bring the roller (2) into a cylindrical shape.

3. Method according to claim 2, wherein the ratio of feed in the normal direction to feed in the longitudinal direction is calculated as (Xdiff + Ddiff) / (Zdiff), with Xdiff = (xl-x2) where xl is the first distance and x2 is the second distance, Ddiff = (dl-d2) / 2, where dl is the first diameter and d2 is the second diameter, adjusted if necessary to the determined misalignment, and Zdiff = (zl'-z2'), where zl' is the position on the guide means from which the processing means reach the first position (zl) on the roller (2) and z2' is the position on the guide means from which the processing means reach the second position (z2) on the roller (2).

4. Method according to claim 2 or 3, wherein the processing machine (1) comprises a control unit (20) which calculates the feed of the processing means in the normal direction and / or longitudinal direction and / or a first drive (11) of a Feed carriage (10) for feeding the processing means in the normal direction and a second drive (12) of the carriage (8) for feeding the processing means in the longitudinal direction.

5. The method according to claim 4, wherein the control unit (20) comprises an interface into which the first and second roller geometries are manually entered.

6. Method according to one of claims 1 to 5, wherein the first and second roller geometries are measured manually, preferably by means of a vernier ruler for circumferential measurement.

7. Method according to one of claims 1 to 6, wherein the determination of the first distance (x1) or second distance (x2) is carried out by displacing the carriage (8) in the longitudinal direction and the feed carriage (10) in the normal direction until the processing means touch the first point (z1) or second point (z2) on the roller (2).

8. The method according to any one of claims 1 to 7, wherein the steps of determining a first and second roll geometry, determining the first and second distance (x1, x2), calculating a conicity and / or a misalignment and reworking are repeated after the first reworking operation.

9. Method according to one of claims 1 to 8, the roller (2) is pressed into a predetermined position by a pressing unit (21) of the processing machine (1) during the post-processing and preferably also when determining the first distance (x1) and the second distance (x2).

10. Processing machine (1) for reworking a roller (2) of a machine (3), wherein the processing machine (1) comprises a carriage (8) with processing means and guide means for guiding the carriage (8), characterized in that the processing means are designed to move the processing means to compensate for a conicity of the roller (2) and / or a slant of the processing machine (1) during the reworking both with a feed in the normal direction of the guide means and with a feed in the longitudinal direction of the guide means in order to form the roller (2) into a cylindrical shape to bring, wherein the conicity of the roller (2) and / or the inclination of the processing machine (1) are calculated from: a first roller geometry, which is preferably a first diameter (dl), a first circumference or a first roller circumferential profile, at a first point (zl) of the roller (2), a second roller geometry, which is preferably a second diameter (d2), a second circumference or a second roller circumferential profile, at a second point (z2) of the roller (2), a first distance (xl) of the processing machine (1) to the first point (zl) on the roller (2), a second distance (x2) of the processing machine (1) to the second point (z2) on the roller (2).

11. Processing machine (1) according to claim 10, wherein the ratio of feed in the normal direction to feed in the longitudinal direction is (Xdiff + Ddiff) / (Zdiff), with Xdiff = (xl-x2) where xl is the first distance and x2 is the second distance, Ddiff = (dl-d2) / 2, where dl is the first diameter and d2 is the second diameter, optionally adapted to the determined misalignment, and Zdiff = (zl'-z2'), where zl' is the position on the guide means from which the processing means reach the first point (zl) on the roller (2) and z2' is the position on the guide means from which the processing means reach the second point (z2) on the roller (2).

12. Processing machine (1) according to claim 10 or 11, further comprising a control unit (20) which is designed to calculate the feed of the processing means in the normal direction and / or longitudinal direction and / or to control a first drive (11) of a feed carriage (10) for feeding the processing means in the normal direction and a second drive (12) of the carriage (8) for feeding the processing means in the longitudinal direction, wherein the control unit (20) preferably comprises an interface into which the first and second roller geometries can be manually entered.

13. Processing machine (1) according to one of claims 10 to 12, wherein the processing machine (1) is designed to repeat the steps of determining a first and second roller geometry, determining the first and second distance (x1, x2), calculating a conicity and / or an inclination and reworking after the first reworking operation.

14. Processing machine (1) according to one of claims 10 to 13, further comprising a pressing unit (21) which is designed to press the roller into a predetermined position.

Images