TW202035101A - Calibration basket with offset intersections - Google Patents

Abstract

A calibration basket is provided for a calibrating device for the calibrating of extruded profiles. The calibration basket comprises a plurality of fin blocks arranged laterally with respect to one another, wherein each of the fin blocks has a plurality of fins arranged in longitudinal direction of the fin block and spaced apart from one another by grooves, and wherein the fins of each fin block are configured and coordinated with one another in such a way that they come into engagement with respective grooves of adjacent fin blocks and in so doing intersections occur respectively on an inner side of two fins, engaging into one another, in a projection transversely to a longitudinal direction of the calibration basket. The intersections of the fins of two adjacent fin blocks have a lateral offset with respect to one another in a projection transversely to the longitudinal direction of the calibration basket. Further, there is provided a method for the production of the above-mentioned calibration basket, and a calibrating device, comprising the calibration basket. Furthermore, there is provided a system for the additive manufacture of at least one fin block of the above-mentioned calibration basket, a corresponding computer program and corresponding data set.

Description

Calibration basket with offset cross point

The invention relates to a calibration basket of a calibration device used for calibrating extruded profiles. The invention further relates to a method for producing the calibration basket, a system for additively manufacturing at least one fin-shaped block of the calibration basket, and corresponding computer programs and data sets.

The calibration device is used to calibrate extruded annular profiles, such as pipe profiles. In the production of such profiles, the desired plastic melt for the production of profiles is first produced in an extruder. The produced plastic melt is then pressed through the exit nozzle of the extruder, which specifies the shape of the profile. Then, the profile from the exit nozzle of the extruder passes through a calibration device, which performs post-forming of the still heated profile.

This calibration device for determining the size of extruded profiles is known from DE 198 43 340 C2. Among them, a calibration device with variable energy adjustment is taught. The calibration device is configured to calibrate extruded plastic pipes with different pipe diameters. The calibration device includes a housing and a plurality of fin-shaped blocks arranged in the housing in a circular shape, and the fins of the fins can be engaged with each other. The fins that mesh into each other form a calibration basket with a circular calibration opening through which the tube to be calibrated is guided (in particular, refer to Figures 1 and 2 of DE 198 43 340 C2). Furthermore, each fin-shaped block is coupled with an actuating device that provides each radial displacement of the individual fin-shaped block. In this way, if necessary, the effective cross-section of the circular calibration opening formed by the plurality of fin-shaped blocks can be adjusted accordingly.

The fin-shaped blocks described in DE 198 43 340 C2 are respectively composed of a plurality of fins, which are strung together on two load-bearing rods arranged apart from each other. In order to maintain the desired distance between adjacent fins, spacer sleeves are used (see also Figure 3 of DE 198 43 340 C2). An example of the fin-shaped blocks 10 strung together is further shown in FIG. 1. The fin block 10 illustrated in FIG. 1 includes a plurality of fins 12 and spacer sleeves 14 which are alternately strung together along the two supporting rods 16. This stringed fin-shaped block is troublesome to manufacture and therefore costly.

Furthermore, unlike the above-mentioned stringed fin-shaped blocks, fin-shaped blocks having a closed carrier structure (or individual ridge structure) are known. Figures 2a, 2b and 2c show examples of this fin-shaped block. The fin block 20 includes a plurality of fins 22 which are arranged to be separated from each other by grooves 26 and carried by a ridge structure 24 formed in a block manner (refer to the 3D view in FIG. 2a). The block-shaped spine structure 24 is realized here in the form of a solid body (for example, a rod-shaped body).

The fins 22 of the fin block 20 are continuously arranged in a straight line along the longitudinal direction of the carrier structure 24 (refer to FIG. 2b). This means that the contact surface 23 of each fin 22 is configured to extend linearly on the inner side of the fin block 20, which contact surface is at least partially in contact with the outer surface of the profile to be calibrated during the calibration process. Furthermore, the fins 22 of the fin-shaped block 20 are uniformly constructed and respectively have inherently symmetrical cross sections lateral to the longitudinal direction of the carrier structure 24 (refer to FIG. 2c).

In the state of installing into the calibration device 30, as illustrated by the example in FIG. 3, the fin block 20 is arranged in the circumferential direction relative to the profile 33 to be calibrated, and forms a calibration basket with a calibration opening 32. Here, the fins 22 of each fin-shaped block 20 are engaged into the grooves 26 respectively adjacent to the fin-shaped blocks 20, so as to produce a configuration of the fin-shaped blocks 20 that are engaged with each other as a whole. The degree of engagement of the fins 20 can be adjusted by the actuating devices 34 respectively coupled to the fins 20. More precisely, an actuating device is provided to displace the fin 20 in the radial direction (thus perpendicular to the feed direction of the profile 33 to be calibrated). Thus, the effective cross section of the calibration opening 32 can be modified accordingly to the profile 33 to be calibrated. A calibration device such as the calibration device 30 illustrated in FIG. 3 is also described in DE 198 43 340 C2.

FIG. 4 schematically shows the engagement of the fins 32 of adjacent fin-shaped blocks 20 with each other. As illustrated in FIG. 4, the intersection 40 occurs between the fins 22 of two adjacent fin blocks 20 respectively. In the protruding part lateral to the feed direction of the profile to be calibrated, as illustrated in FIG. 4, the intersection 40 is a discontinuous transition between the contours of the contact surfaces 23 of the fins 22 that engage each other. Therefore, the effective cross-section of the calibration opening for the tubular profile is usually not exactly circular, but has a polygonal shape. In the known fin block 20, when the fin block 20 is installed into the calibration device 30, the longitudinal direction of the carrier structure corresponds to the feeding direction of the profile. Therefore, a plurality of individual intersections of the two occlusal fins 22 respectively form a linear intersection 40, which extends parallel to the feeding direction between the two adjacent fins 20.

When the profile to be calibrated passes through the calibration basket of the calibration device 30, the intersection 40 generates a trace on the surface of the profile to be calibrated. Therefore, when calibrating cylindrical profiles (such as pipe profiles), the calibration basket is rotated during calibration. After rotating, it is possible to eliminate traces generated on the surface of the profile to the greatest extent. However, the rotation of the calibration basket requires a cumbersome and expensive structure of the calibration device. The calibration basket must be installed and driven in a suitable way. Furthermore, many moving parts of this structure are made into the housing of the required calibration basket in order to limit potential risks.

The purpose of the present invention is to provide a calibration basket for a calibration device, which reduces or eliminates the problems indicated in the prior art. In particular, through the present invention, it is possible to calibrate the cylindrical profile without rotation, in which the high surface quality of the profile is achieved.

In order to solve the above problems, according to the aspect of the present invention, a calibration basket of a calibration device for calibrating extruded profiles is provided. The calibration basket includes a plurality of fin-shaped blocks arranged laterally with respect to each other, wherein each fin-shaped block has a plurality of fins arranged in the longitudinal direction of the fin-shaped block and separated from each other by grooves. Furthermore, the fins of each fin block are constructed and coordinated with each other so that they will engage with the corresponding grooves of the adjacent fin block, and by doing so, in the protruding part transverse to the longitudinal direction of the calibration basket , The intersection point occurs on the inside of the two fins that mesh into each other. In the protruding part transverse to the longitudinal direction of the calibration basket, the intersection of the fins of two adjacent fin-shaped blocks has a lateral offset relative to each other.

The extruded profile can be a plastic profile. The extruded plastic profile can be a ring profile. In particular, the plastic profile may be a pipe profile.

When the calibration basket is installed into the calibration device, the longitudinal direction of the calibration basket corresponds to the extrusion direction (feeding direction) of the (extruded) profile to be calibrated. The fins can preferably be arranged parallel to each other and laterally in the longitudinal direction of the calibration basket.

Each fin-shaped block may include a carrier structure with fins disposed thereon. The carrier structure can be arranged on the back side of the fin. The rear side is the side surface of the fin. When the calibration basket is installed into the calibration device, the side surface faces away from the profile to be calibrated. Opposite to the rear side, the inner side of the fin-shaped block faces the side of the profile to be calibrated or the side away from the carrier structure respectively.

According to a variant, the intersection points appearing after two adjacent fins are engaged with each other (or respectively "occluded") can be respectively located on a (linear) intersection curve extending obliquely with respect to the central axis of the calibration basket. In this case, the calibration basket can be constructed in the form of a hyperbola. Alternatively, the intersection curve can be a two-dimensional or three-dimensional scan curve (for example, an elliptical or spiral curve).

According to another variant, the calibration basket can be designed for calibrating pipe profiles. Here, each fin may have a contact surface on the inner side of the individual fin-shaped block. Each contact surface may have a (predefined) curvature on the inside. The curvature of each contact surface is preferably weaker (that is, smaller) or identical to the curvature of the outer wall of the pipe profile to be calibrated. This means that when the curvature can be described by a circular segment (which is usually not the case in free-form surfaces), the radius of the contact surface can be larger or equal to the outer radius of the pipe profile to be calibrated.

The curvature of the contact surface of the fin-shaped block can vary along the longitudinal direction (relative to each other) of the calibration basket. According to a variant, all the fins of the calibration basket can be constructed identically. Alternatively, the calibration basket may include at least two types of fin-shaped blocks. A plurality of fin-shaped blocks can be arranged relative to each other, and each fin-shaped block is laterally connected by two different fin-shaped blocks.

Each fin-shaped block of the calibration basket can be formed as a whole. Alternatively, the supporting structure may include at least one supporting rod, and each fin is strung along the supporting rod. Furthermore, the carrier structure and the fins can be made of the same material or different materials. In particular, the carrier structure and/or the fins may be formed of metal materials or polymer materials.

Each fin-shaped block can be produced by 3D printing. Alternatively, the fins can be produced, for example, by milling, drilling, cutting, or by casting methods.

After the lateral offset of the crossing point relative to each other, or the inclination of the crossing point curve relative to the feed direction of the profile to be calibrated or in other ways (non-linear and parallel) the route, the calibration opening of the calibration basket is linear During the feeding of the profile, the indentation produced by the intersection on the outer surface of the profile will be smoothed. No need to rotate the calibration basket.

According to another aspect of the present invention, a calibration device for calibrating extruded profiles is provided. The calibration device includes a calibration basket according to the present invention. Furthermore, the calibration device includes a plurality of actuation devices, wherein each actuation device is respectively coupled to the fin-shaped block of the calibration basket, so as to actuate each fin-shaped block separately.

The calibration opening can be adapted to the outer profile of the (extruded) profile to be calibrated.

The actuation of each fin may include radial movement of the fin. Furthermore, the lateral offset of the intersection between the fins of two adjacent fin-shaped blocks can be changed according to the actuation of the fin-shaped block (that is, with the actuation of the fin-shaped block). As the effective cross-section of the calibration opening increases, the lateral offset can increase. As the effective cross section of the calibration opening decreases, the lateral offset can be reduced.

According to another aspect of the present invention, a method for producing the calibration basket according to the present invention is provided. The method at least includes the step of producing the fin-shaped block of the calibration basket by 3D printing or by additive manufacturing. The production of fin-shaped blocks by 3D printing methods or additive manufacturing may include layered laser sintering or laser melting of material layers, where the individual fin-shaped blocks to be produced are continuously (in sequence) ) Apply a layer of material.

Furthermore, the method may include the step of calculating the geometry of the fins (CAD data), and optionally, the step of converting the 3D geometry data into corresponding control commands for 3D printing or additive manufacturing.

Furthermore, the method may include the step of assembling a plurality of fin-shaped blocks into the calibration basket.

According to another aspect, a method for producing at least one fin of a calibration basket is provided, which includes the following steps: developing a data set that represents at least one fin of the calibration basket as described above; and storing the data set in On storage device or server. The method may further include: inputting a data set into a processing device or a computer, and the processing device or computer activates the device for additive manufacturing in a manner that it manufactures the fins represented in the data set.

According to another aspect, a system for additively manufacturing at least one fin of a calibration basket is provided, which has: a data set generating device for generating a data set representing at least one fin of the calibration basket as described above; A storage device for storing the data set; and a processing device for receiving the data set and used for actuating for augmentation in such a way that the device for additive manufacturing produces the fins represented in the data set Material manufacturing equipment. The storage device can be a USB memory stick, CD-ROM, DVD, memory card, or hard disk. The processing device can be a computer, a server, or a processor.

According to another aspect, a computer program or an individual computer program product is provided, which includes a data set, which is used for the additive manufacturing device to manufacture at least one fin of the calibration basket as described above, by the processing device or the computer After reading the data set, the data set is caused to activate the device for additive manufacturing.

According to another aspect, a machine-readable data carrier is provided on which the computer program is stored. The machine-readable data carrier can be a USB memory stick, CD-ROM, DVD, memory card, or hard disk.

According to another aspect, a data set representing at least one fin of the calibration basket described above and/or the calibration basket written above is provided. The data set can be stored on a machine-readable data carrier.

Figures 1 to 4 have already been discussed in the preface regarding the prior art field. Will refer to the description there.

With regard to FIG. 5, an exemplary embodiment of the calibration basket for the calibration device according to the present invention is further described.

FIG. 5 schematically shows a view of the calibration basket 500. The calibration basket 500 has a hyperboloid shape. According to the example illustrated in FIG. 5, a plurality of fin-shaped blocks 520 are arranged around the central axis 510 of the calibration basket 500 in such a way that they together form the calibration opening 550 of the calibration basket 500 (for simplicity, only as an example to illustrate each other The fin profile of the second fin-shaped block 520 is engaged). According to the description in FIG. 5, the fin-shaped blocks are arranged obliquely with respect to the central axis 510 of the calibration basket 500 respectively. At the same time, the fins 525 of each fin-shaped block 520 are oriented perpendicular to the central axis 510 respectively.

Each fin 525 of each fin 520 of the calibration basket 500 has a contact surface on the inner side thereof (not illustrated in FIG. 5). Here, the inner side is the side of each fin 525 facing the central axis 510 of the calibration basket 500. The contact surface may be a free-form surface with (concave) curvature. The curvatures of the fins 525 of the fin block 520 can vary with respect to each other. Furthermore, the curvature of each fin 525 may be marked weaker (smaller) than the curvature of the outer surface of the pipe profile to be calibrated or individual outer walls, or may be exactly the same as the curvature. Depending on the application, the contact surface of the fin 525 may also be flat. The fins 525 of the fin blocks 520 are respectively engaged in the grooves 526 of the adjacent fin blocks 520. Therefore, the contact surfaces (engaged with each other) of the snapped fins 520 form the calibration opening 550 of the calibration basket 500.

According to the description in FIG. 5, the calibration basket 500 has an inlet end 532 and an outlet end 534 opposite to the inlet end. When the calibration basket 500 is installed into the calibration device, the profile to be calibrated can enter the calibration basket 500 at the entrance end 532 and leave the calibration basket 500 at the exit end 534. Between the inlet end 532 and the outlet end 534, the calibration basket 500 (or the individual calibration opening 550) may have a constriction 536. The calibration basket 500 (or the individual calibration opening 550) may have substantially the same cross section at the inlet end 532 and the outlet end 534 (that is, transverse to the central axis 510). Furthermore, the deviation of the cross section at the inlet end 532 or the individual outlet end 534 of the calibration basket 500 relative to the cross section of the constricted portion 536 may be 1% to 3%. In order to clearly illustrate the above-mentioned cross-sectional difference, the constriction 536 of the calibration basket 500 is emphasized in the illustration of FIG. However, it should be understood that the constriction is only in the range of a few percent (1% to 3%).

Between the fins 525 of two adjacent fin-shaped blocks 520, intersections 540 appear respectively. The intersection 540 between two adjacent fin-shaped blocks 520 of the calibration basket 500 is located on a straight line which extends obliquely with respect to the central axis 510 of the calibration basket 500. After this skew process of the intersection curve, the trace generated by the intersection 540 on the surface (or individual outer wall) of the profile to be calibrated can be smoothed during the straight line extending through the calibration basket 500 of the calibration device.

Each fin 520 of the calibration basket 500 according to FIG. 5 includes a carrier structure 528 (back structure). Furthermore, each fin 520 may include a coupling device (not illustrated in FIG. 5). The coupling device provides an actuation device for coupling the calibration device. The actuation device is also not visible in FIG. 5.

The carrier structure 528 serves as a carrier for the fin 525. The carrier structure 528 may be formed as a solid body (block). Alternatively, each fin-shaped block 520 may also have several supporting rods, and the fins 525 are fastened to the supporting rods, as described in relation to FIG. 1.

As an alternative to the modification illustrated in FIG. 5, the calibration basket according to the present invention may also form a calibration opening, which is not restricted but has a substantially uniform cross-section throughout the entire length of the calibration basket.

The following describes exemplary fin geometry of the fin block of the calibration basket according to the present invention with respect to FIGS. 6 and 7.

The fin geometry illustrated in FIGS. 6 and 7 can be respectively associated with the fin-shaped blocks of the calibration basket, wherein the fin-shaped blocks are arranged parallel to the center axis of the calibration basket.

Fig. 6 schematically shows the cutout of the calibration basket according to the present invention. The calibration basket includes a plurality of fin-shaped blocks 600a and 600b meshing with each other. The fins 620a, 630a and their respective contact surfaces 622a, 632a of the first fin-shaped block 600a become larger from the inlet side of the calibration opening toward the outlet side (the range transverse to the longitudinal direction of the calibration basket). At the same time, the (concave) curvature of its individual contact surfaces 622a, 632a increases. For simplicity, in FIG. 6, only the first (entry side) fin 620a (solid line) and the last (outlet side) fin 630a (dashed line) of the first fin-shaped block 600a are illustrated. Compared with the first fin 600a, the second fin 600b is constructed in the opposite way. This means that the first fin 620b (solid line) of the second fin 600b has a relatively small width (that is, a range transverse to the longitudinal direction of the fin 600b). The last fin 630b (dotted line) of the second fin 600b is wider than the first fin 620b of the second fin 600b, and its contact surface 632b has a curvature greater than that of the first fin 620b.

Therefore, between the first fins 620a, 620b (solid lines) and between the second fins 630a, 630b (dashed lines) of the fin-shaped blocks 600a, 600b that are engaged with each other, there appears to have a lateral offset relative to each other. The intersections 642, 644. The intersection points 642, 644 can be located on the intersection curve according to the lateral extent and curvature of the contact surfaces 622a, 622b, 632a, 632b of the fins 620a, 620b, 630a, 630b, the intersection curve, for example, in an elliptical or spiral manner Extend in the longitudinal direction of the calibration basket.

The curvature of the contact surfaces 622a, 622b, 632a, 632b may be a surface with a partial cylindrical shape, the radius of which is larger or equal to the radius of the outer wall of the profile to be calibrated. Alternatively, the contact surfaces 622a, 622b, 632a, 632b may be flat surfaces or free-form surfaces, the curvature of which is weaker or the same as the curvature of the outer wall of the profile to be calibrated.

FIG. 7 schematically shows another variation of the fin geometry of the fin block 700, which can be used as a component of the calibration basket according to the present invention. The fin-shaped block 700 illustrated in FIG. 7 has a plurality of fins 720. For the sake of simplicity, only the protruding parts of three continuous fins 720 (transverse to the longitudinal direction of the fin-shaped block 700) are illustrated by way of example. Each fin 720 has a contact surface 722 on its inner side. The contact surfaces 722 of the fins 720 are inclined with respect to each other. Through the different inclination (deflection) of the contact surfaces 722 with respect to each other, the position of the intersection of the fins of the adjacent fins of the calibration basket according to the present invention including the fin 700 is changed. Therefore, also according to the configuration in FIG. 7, the lateral offset of the intersection in the longitudinal direction of the calibration basket including the plurality of fin-shaped blocks 700 can be achieved.

The embodiments according to Figures 5, 6 and 7 are only examples. It should be understood that in order to achieve the lateral offset of the intersection of two adjacent fin-shaped blocks of the calibration basket according to the present invention, there may be several other configurations.

What is essential to the present invention is mainly that the intersection between the fins of the two adjacent fin-shaped blocks of the calibration basket is laterally offset relative to each other. A calibration basket in the form of a hyperboloid can achieve this purpose. Furthermore, the lateral offset of the intersection can be achieved, especially the curvature of the contact surfaces of the fins in the fin-shaped block varies relative to each other. Additionally or alternatively, the fins (and therefore also their contact surfaces) can be embodied differently in width and/or inclined relative to each other.

In order to produce a fin basket including a plurality of fin-shaped blocks 520, 600, 700 according to the present invention, a generative or individual additive manufacturing method can be used. This production method is shown in Figure 8 and described in further detail below.

Therefore, the 3D printing method was started. Here, in the first step S810, the 3D fin geometry (CAD data) is calculated. Consider the predefined model parameters (for example, the geometry of the fins, the materials of the fins 520, 600, 700, the fins 520, 600, 700 thermal characteristics), calculate the geometry of the fins 520, 600, 700 and especially the configuration of the fins 525, 620a/b, 630a/b, 720 relative to each other.

In the subsequent second step S820, the calculated 3D geometric data is converted into control commands for operating the 3D printing device. The 3D printing device may be designed to perform a 3D printing method (for example, a laser sintering method or a laser melting method).

Then, based on the generated control command, the fin blocks 520, 600, and 700 are constructed hierarchically with the aid of a 3D printing device (step S830). Metal materials or polymer materials can be used as materials for 3D printing.

Furthermore, the method may include the step of assembling a plurality of fin-shaped blocks into the calibration basket.

The 3D printing method described here for producing the fins 520, 600, 700 according to the present invention is advantageous because the method provides almost unlimited freedom of form. Therefore, for example, the undercutting in the structure of the fin blocks 520, 600, 700 will not constitute an obstacle in the production of the fin blocks 520, 600, 700 (as opposed to many casting methods).

With the calibration basket described in this article, the calibration of the ring profile can be improved. In particular, the linear feed of the profile is passed through the calibration device, and the pressure formed at the intersection between the adjacent fin-shaped blocks that mesh with each other on the calibration basket of the calibration device on the outer surface (or individual outer wall) of the profile to be calibrated The mark can be smoothed. Here, there is no need to rotate the calibration basket of the calibration device.

10: Fins 12: Fins 14: Spacer 16: bearing bar 20: fins 22: Fins 23: contact surface 24: Back structure 26: groove 30: Calibration device 32: Calibration opening 33: Profile 34: Actuating device 40: Intersection 500: Calibration basket 510: Central axis 520: Flip Block 525: Fins 526: groove 528: Bearing structure 532: entry side 534: exit 536: contraction 540: Intersection 550: Calibration opening 600: fins 600a: flipper 600b: flipper 620a: Fins 620b: Fins 622a: contact surface 622b: contact surface 630a: Fin 630b: Fins 632a: contact surface 632b: contact surface 642: Intersection 644: Intersection 700: fins 720: Fins 722: contact surface

The above-mentioned method, system and/or computer program can also be constructed to manufacture the above-mentioned calibration basket as an alternative or alternative to the fin-shaped block.

The other advantages, details, and aspects of the present invention are explained with the aid of the following drawings. Shown as:

[Figure 1] A 3D view of a fin-shaped block used for a calibration device according to the prior art;

[Figures 2a to 2c] are views of another fin-shaped block used for calibration of the device according to the prior art;

[Figure 3] A calibration device based on the prior art;

[Figure 4] A view of several fins that are engaged (occluded) into each other;

[Figure 5] is a schematic diagram of the calibration basket according to the present invention;

[Figures 6 and 7] are views of exemplary fin geometry of the fin block of the calibration basket according to the present invention; and

[Figure 8] is a flowchart of the method for producing a calibration basket according to the present invention.

500: Calibration basket

510: Central axis

520: Flip Block

525: Fins

526: groove

528: Bearing structure

532: entry side

534: exit

536: contraction

540: Intersection

550: Calibration opening

Claims (16)

A calibration basket (500) of a calibration device for calibrating extruded profiles, which includes a plurality of fin-shaped blocks (520, 600, 700) arranged laterally with respect to each other, wherein each fin-shaped block (520, 600, 700) has a plurality of fins (525, 620a/b, 630a/b, 720) arranged in the longitudinal direction of the fin-shaped block (520, 600, 700) and separated from each other by a plurality of grooves (526) , And the fins (525, 620a/b, 630a/b, 720) of each fin-shaped block (520, 600, 700) so that they and the adjacent fin-shaped block (520, 600, 700) The meshing methods of the respective grooves (526) are constructed and coordinated with each other, and because of this, in the protruding part transverse to the longitudinal direction of the calibration basket, the intersection points (540, 642, 644) respectively occur when the meshing enters On the inner side of the two fins (525, 620a/b, 630a/b, 720) of each other, it is characterized by two adjacent fin-shaped blocks (520, 600, 700) in the longitudinal direction transverse to the calibration basket The intersection points (540, 642, 644) of the fins (525, 620a/b, 630a/b, 720) have a lateral offset relative to each other. For example, the calibration basket (500) of claim 1, in which the crossing points (540, 642, 644) generated by meshing two adjacent fins (520, 600, 700) with each other are respectively located on the crossing curve , The cross curve slantingly extends to the central axis (510) of the calibration basket (500). Such as the calibration basket (500) of claim 2, wherein the calibration basket (500) is designed to calibrate the tube profile, wherein each fin (525, 620a/b, 630a/b, 720) has a fin-shaped block The contact surfaces (622a/b, 632a/b, 722) on the inner side of (520, 600, 700), wherein relative to the curvature of the outer wall of the tube profile to be calibrated, each contact surface (622a/b, 632a/ b, 722) has a smaller or equal curvature. For example, the calibration basket (500) of claim 3, wherein the curvature of the contact surfaces (622a/b, 632a/b, 722) of the fin-shaped blocks (520, 600, 700) is along the longitudinal direction of the calibration basket (500) Long direction changes. For example, the calibration basket (500) of one of claims 1 to 4, wherein each fin-shaped block (520, 600, 700) is formed as a single piece. For example, the calibration basket (500) of one of claims 1 to 5, wherein each fin-shaped block (520, 600, 700) is produced by 3D printing or by additive manufacturing methods. A calibration device for calibrating extruded profiles, comprising a calibration basket (500) and a plurality of actuating devices such as one of claims 1 to 6, wherein each actuating device is connected to the fin of the calibration basket (500) The blocks (520, 600, 700) are coupled to individually actuate each fin-shaped block (520, 600, 700). Such as the calibration device of claim 7, wherein the actuation of each fin-shaped block (520, 600, 700) includes the radial movement of the fin-shaped block (520, 600, 700). Such as the calibration device of claim 8, wherein the lateral offset of the intersection points (540, 642, 644) can be changed as a function of the actuation of the fins (520, 600, 700). A method for manufacturing a calibration basket such as one of claims 1 to 6, including producing the fin-shaped blocks (520, 600, 600) of the calibration basket (500) by 3D printing or by additive manufacturing, respectively 700) steps. For example, the method of claim 10 further includes the step of calculating the geometric shape of the 3D fin-shaped block, and converting the calculated 3D geometric shape data into corresponding control commands for the 3D printing or for the additive manufacturing. step. A method for producing at least one fin-shaped block (520, 600, 700) of the calibration basket according to one of claims 1 to 6, including the following steps: Develop a data set that represents at least one fin-shaped block (520, 600, 700) of the calibration basket (500) in one of the requirements 1 to 6; Store the data set on a storage device or server; and The data set is input into a processing device or computer, and the processing device or computer activates the device for additive manufacturing in a manner that it manufactures the fins (520, 600, 700) represented in the data set. A system for additive manufacturing of at least one fin-shaped block (520, 600, 700) of a calibration basket such as one of claims 1 to 6, comprising: The data set generating device is used to generate a data set representing at least one fin-shaped block (520, 600, 700) of the calibration basket of one of request items 1 to 6; Storage device for storing the data group; The processing device is used for receiving the data set and used for activating the device for additive manufacturing in a manner that the device for additive manufacturing produces the fin-shaped blocks (520, 600, 700) represented in the data set. A computer program comprising a data set, which is read by a processing device or a computer to cause it to manufacture at least one fin-shaped block of a calibration basket such as one of claims 1 to 6 with a device for additive manufacturing (520, 600, 700) to activate the device for additive manufacturing. A machine-readable data carrier on which a computer program such as claim 14 is stored. A data group, which represents at least one fin-shaped block (520, 600, 700) of the calibration basket as one of claims 1 to 6 and/or the calibration basket as one of claims 1 to 6.

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