AT527675A4 - Process for reworking the roller - Google Patents

Abstract

The invention relates to 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), wherein the method comprises the following steps: - determining a first roller geometry at a first location (z1) of the roller (2), - determining a second roller geometry at a second location (z2) of the roller (2), - determining a first distance (x1) of the processing machine (1) to the first location (z1) 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 geometries and the first and second distances (x1, x2), and - reworking the roller (2) into a cylindrical Shape taking into account the calculated conicity and/or skew.

Description

The invention relates to a method for reworking a roll of a machine by means of a processing machine which has a carriage with processing means and

Guide means for guiding the carriage.

Those skilled in the art are familiar with oil mills used to press kernels, which are also referred to as oilseeds. During processing to press the oilseeds, the oilseeds undergo several processes, one of which is flaking with a flaking machine. During flaking, the oilseeds are processed 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 for the oil mill. These rollers are usually made of cast steel and have a length of more than one meter and a diameter of more than 400 millimeters. As a result, these rollers have a considerable

Weight and at the same time form the heart of the flaking machine.

The rollers of flaking machines are subject to wear on their surfaces. Due to the high demands on the uniform thickness of the oilseed flakes, any wear on the rollers is problematic and negatively affects the quality of the flakes. Therefore, it is necessary to smooth the surface of the flaking rollers by machining them at regular intervals of every six months to a maximum of one year.

or reworked.

For example, AT 516 866 A1 discloses attaching 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 reworking. 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

to move it back out of the desired position.

Post-processing must have a conicity.

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 roll deformations can be reworked.

This object is achieved by a method for reworking the roll 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:

- 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,

- 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,

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

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

- 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

- Reworking the roller into a cylindrical shape taking into account the

calculated conicity and/or skew.

smooth, but still conical roller surface.

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 to 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.

Preferably, the reworking of the roll is carried out by the processing means for reworking with both a feed in the normal direction and a feed in the longitudinal direction in order to bring the roll into a cylindrical shape. In this case, no manual readjustment of the processing machine is necessary, regardless of the conicity of the roll or the misalignment of the processing machine. Using this method, the entire assembly process of the processing machine, including determination of the two roll geometries and distances, can be completed in approximately 30 minutes, and the reworking can be carried out immediately afterwards. With an adjustment method according to the prior art, in which only the respective distances to the roll surface and a subsequent mechanical alignment of the processing machine are carried out, adjustment processes usually take 3 to 4 hours. As an alternative to the aforementioned method, however, the present invention could also carry out the reworking without a feed in the normal direction if the processing machine, after calculating the conicity and misalignment accordingly,

is aligned mechanically, although the advantages explained above do not apply here.

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

Xdiff = (x1-x2) where x1 is the first distance and x2 is the second distance,

Ddiff = (d1-d2)/2, where d1 is the first diameter and d2 is the second diameter,

if necessary, adjusted to the determined imbalance, and

processing machine.

In this calculation method, the conicity is included in the calculation by the correction factor Ddiff and the tilt by the correction factor Xdiff. It is understood that the calculation method can also be modified to essentially

to get the same results, e.g. if z = z' is set equal.

Although the calculation steps and the setting of the feed can be carried out manually, it is preferred if the processing machine comprises a control unit which calculates the feed 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. As a result, the method according to the invention can be automated as far 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 can be manually

be entered.

In general, a circumferential measurement using a vernier ruler is particularly suitable for determining the roll geometry, since, for example, a direct

Diameter measurement is difficult to carry out when the roller is installed.

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 forwarded directly to the control unit, from which the respective distances from the processing machine to the roller, as well as 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 located on the far left of the guide means and the feed carriage is retracted, i.e., to a maximum distance from the roller.

When the machining tools are brought to the first position at the

for example, a corresponding measuring device is mounted on the carriage.

Furthermore, it is preferred if the steps of determining a first and second roll geometry, determining the first and second distance, 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 will no longer exist after the first reworking process, a more representative diameter measurement can be carried out, so that after the second reworking process, a roll with a particularly high

Accuracy will be present in the cylindrical form.

To further increase 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 the play in the roller bearing for the post-processing process, allowing for better manufacturing tolerances.

are achievable.

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 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 bring the roll into a cylindrical shape, wherein the conicity of the roll and/or the

Misalignment of the processing machine is calculated from:

- a second roller 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 point on the roller,

- a second distance of the processing machine to the second point on the roller.

The processing machine according to the invention has the features explained above for the method

Advantages and can be used with the same design variants.

These and further advantageous embodiments of the method according to the invention are

explained in more detail below using the figures.

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

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

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

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 relative to each other in order 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. The rollers 2, according to this exemplary embodiment, are 1.5 meters long, made of cast steel, and weigh several hundred kilograms. The surface of the rollers 2 was hardened during production in order 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, whereby an oilseed lying in a depression cannot

is sufficiently deformed or compressed.

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 a (Figure 3) to the roller 2.

when the processing machine 1 is attached to the machine 3. Although the

becomes.

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 disk-shaped cutting edge and can be used rotated around its own axis when the cutting edge is worn. The carriage 8 has a feed carriage 10 for adjusting the feed of the processing means in the normal direction of the guide means. The normal direction is usually perpendicular to the

Longitudinal direction.

With a first drive 11 of the feed carriage 10, the cutting depth of the turning tool 9 into the surface of the roller 2 can be adjusted. Alternatively, the

However, the feed slide 10 can also be moved in the x-direction by a handwheel.

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 is achieved, which improves the quality of the finished surface.

In order to rework the roller 2 in such a way that it has a uniform cylindrical surface after reworking, the following procedure is used:

procedures are used.

As indicated in Figure 2, a first diameter d1 is initially measured at a first point z1l in the longitudinal direction of the roller 2. This is usually done manually using a vernier ruler for circumference measurement. A circumference measured in this way can then be divided by x in order to obtain an average diameter at this point of the roller 2. Alternatively, the diameter could also be measured directly, but 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 could be mounted, e.g., on the guide means on the

be provided at the respective location to measure the roll profile from which

first diameter d1 can be determined.

Subsequently, a second diameter d2 or, in general, a second roll geometry is measured at a second location z2 in the longitudinal direction of the roll 2. This measurement can be carried out as described above for the first diameter d1 or for the first roll geometry

be performed.

The first location z1 and the second location z2 are usually 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 automatic using the control unit described herein.

Based on the first diameter d1 and the second diameter d2, it can now be determined whether roller 2 is conically deformed. For example, a correction value Ddiff can be determined, which is calculated as Ddiff = (d1-d2)/2. If the correction value is not zero, there is a conicity of roller 2 that needs to be compensated. This conicity can be compensated if the processing tools are offset 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 specialist). Zdiff is calculated as z1'-z2', where z1' is the position on the guide means from which the processing means reach the first position z1 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. Since in the example of Figure 2 the guide means are "randomly" parallel to the longitudinal axis of the roller 2, z1 = z1' 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 the roller 2, whereby this would result in a larger

This requires adjustment effort.

Measured by management resources.

In the simplest case, the processing means are moved on the carriage 8 along the guide means to the first position z1'°, after which the processing means are moved by means of the feed carriage 10, e.g. manually, to the first position z1 on the roller 2, until the processing means touch the roller 2. The path covered by the processing means can be output as distance x1 from the feed carriage 10 and then displayed visually or stored in a memory. In alternative variants, the distance x1 could also be measured, for example, by means of a

Laser measuring device for distance measurement.

After the first distance x1 has been determined at the first point z1°, the carriage 8 with the machining means is moved to the 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 z1'-z2' can be carried out by means of a simple coordinate transformation or can be omitted, since the

Difference is negligible at small angles a.

Based on the first distance x1 and the second distance x2, it can now be determined whether the guide means are arranged at an angle a to the roller 2. For example, a correction value Xdiff can be determined, which is calculated from Xdiff = x1-x2. If the roller 2 is cylindrical and the correction value is not zero, there is a misalignment of the guide means with respect to the roller 2 that needs to be compensated. This misalignment can be compensated if the processing means are moved in the normal direction of the roller 2, 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

Longitudinal direction calculated as Xdiff/Zdiff. Alternatively, the guidance means could also be

an angle to roller 2, whereby this requires a greater adjustment effort with

brings.

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 the roller 2 could not have any conicity (in which case the post-processing could take place as shown in Figure 3).

Figure 4 shows that by means of the method according to the invention it is possible to correct an inclination of the processing machine 1 with respect to the roller 2 simultaneously during the

Compensation of the conicity of roller 2 can be carried out.

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 z1l 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 x1 and the second distance x2 to the roller 2 are determined at the first location z1' and the second location z2, respectively, from which the processing means reach the first location z1l and the second location z2 on the roller 2. 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, Dfiff, 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 neglected, for example, at small angles.

can be.

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 this 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, have an interface (e.g., an HMI, Human Machine Interface) for entering the manually measured diameters d1, d2 and, if necessary, also for entering the distance z1-z2 (for the approximate determination of Zdiff) between the two

positions and/or the distances x1, x2.

In practice, for example, two markings are applied to the roller 2, corresponding to the first location z1l and the second location z2. At these locations, the diameter d1 and the second diameter z2, or generally the first and second roller geometries, are manually determined, which are then input into the control unit 20 via the interface. The control unit 20 can determine the correction factor Ddiff.

calculate automatically.

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.

After the factors Ddiff, Xdiff, and Zdiff have been calculated, the control unit 20 can control the processing means or the first and second drives fully automatically in order to rework the roller 2 such that it assumes a cylindrical shape after reworking. It should be noted that the control unit 20 does not necessarily have to control the processing means fully automatically, 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 can set the offset in the normal direction.

for example, using the handwheel.

Further 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, operate the processing means in two post-processing cycles without intermediate measurements.

control.

The aforementioned method for reworking the roller 2 results in a roller 2 that is as cylindrical as possible. However, deviations from a cylindrical shape can occur if the roller 2 originally does not 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 a misalignment, 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.

become.

If, for example, the roller 2 has an oval cross-section before carrying out 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 reworking, 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. A second reworking of the roller 2 using the method according to the invention results in

therefore a roller 2 with particularly high manufacturing tolerances.

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 x 1, x 2. 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.

This deficiency can be overcome according to the invention if the pressing unit 21

Roller 2 is preferably preloaded into a certain position in the bearing. As shown in Figure 6

The pressing unit 21 presses the roller 2 from the bottom left to the 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 towards 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

is greater than the bearing clearance.

The pressing unit 21 is usually hydraulically operated. To ensure good contact with the roller 2, the pressing unit 21 can comprise two rollers 22, which are

the roller 2 during the pressing process.

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 reworking 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.

become.

Claims (14)

Patent claims 1. 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 (d1), a first circumference or a first roller circumference profile, at a first location (z1) 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 (x1) of the processing machine (1) to the first point (z1) 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 (x1, x2), and - Reworking the roller (2) into a cylindrical shape taking into account the calculated conicity and/or skew. 2. Method according to claim 1, wherein the reworking of the roller (2) is carried out in that the processing means for reworking move both with a feed in the normal direction and with a feed in the longitudinal direction in order to move the roller (2) into a cylindrical shape. 3. The 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 = (x1-x2) where x1 is the first distance and x2 is the second distance, Ddiff = (d1-d2)/2, where d1 is the first diameter and d2 is the second diameter, adjusted if necessary to the determined misalignment, and Zdiff = (z1‘-z2‘), where z1‘ is the position on the guide means from which the processing means reach the first point (z1) 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). 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 longitudinal direction. 5. The method according to claim 4, wherein the control unit (20) comprises an interface, in which the first and second roller geometries are entered manually. 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 Circumference 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. Method according to 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 skew and Post-processing can be repeated after the first post-processing operation. 9. Method according to one of claims 1 to 8, the roller (2) is moved by a pressing unit (21) of the processing machine (1) during the post-processing and preferably also during the determination of the first distance (x1) and the second distance (x2) in a predetermined position is pressed. 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 compensate for a conicity of the roller (2) and/or a skewed position 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 longitudinal direction of the guide means in order to form the roller (2) into a cylindrical shape 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 (d1), a first circumference or a first roller circumference profile, at a first location (z1) of the roller (2), - 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), - a first distance (x1) of the processing machine (1) to the first point (z1) 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 Normal direction to feed in longitudinal direction (Xdiff + Ddiff)/(Zdiff), with Xdiff = (x1-x2) where x1 is the first distance and x2 is the second distance, Ddiff = (d1-d2)/2, where d1 is the first diameter and d2 is the second diameter, adjusted if necessary to the determined misalignment, and Zdiff = (z1‘-z2‘), where z1‘ is the position on the guide means from which the processing means reach the first point (z1) 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 input are. 13. Processing machine (1) according to one of claims 10 to 12, wherein the processing machine (1) is designed to carry out 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 post-processing after the to repeat the first post-processing process. 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 to press.