EP1285706A1 - Method of manufacturing a non-rotationally symmetrical workpiece without cutting and spinning machine - Google Patents

Abstract

The non-machining production process involves holding the blank (26) on a rotating spindle and rotating it while a deforming roller (28a) moves reciprocally between maximum and minimum settings depending on the rotation angle of the blank. At the same time, the blank is radially offset from the spindle rotation axis (S) depending on its rotation angle.

Description

The invention relates to a method according to the preamble of claim 1 for the non-cutting production of a non-rotationally symmetrical Workpiece on a pressure rolling machine. Furthermore, the invention relates to a pressure rolling machine according to the preamble of claim 8.

The non-cutting production of a non-rotationally symmetrical Workpiece on a press rolling machine is known. So is in DE 196 42 004 C2 a generic method for non-cutting production of a non-rotationally symmetrical Workpiece as well as a pressure rolling machine for implementation disclosed this method. With the help of this known The process can be rotationally symmetrical in a very simple and elegant manner Preforms at least in sections non-rotationally symmetrical workpieces are rolled. Alternatively, it is also possible with this known method non-rotationally symmetrical preforms as semi-finished products use sections that are pressed in sections so that rotationally symmetrical areas, for example connecting pieces, on the otherwise non-rotationally symmetrical Workpiece can be molded. To shape the desired one Cross-sectional shape is the forming roll between a maximum roll delivery position and a minimum Roll delivery position depending on the angle of rotation of the Move the preform back and forth radially.

When molding preforms or workpieces where considered about the scope of the preform or the workpiece there are big differences in the cross-sectional dimensions, for example with elliptical cross-sectional shapes with large main apex dimensions and compared to these small vertex dimensions, is the travel path, the forming roll between the maximum and the minimum Roll delivery position has to be moved back and forth, comparatively large. Since the support arrangement on which the Forming roller is mounted, be as rigid as possible must have a correspondingly large mass, the spinning roll machine must move back and forth Forming roll consequently with correspondingly powerful drives be provided to the forming roll using the Accelerate, move and slow down the support arrangement to be able to. Furthermore, this has comparative in particular slow acceleration and deceleration of those to be moved large masses that the forming speeds when manufacturing the non-rotationally symmetrical workpieces compared to the forming speeds for rotationally symmetrical ones Workpieces are small.

It is an object of the invention to provide a method for non-cutting manufacturing of a non-rotationally symmetrical Specify workpiece or a press rolling machine by its or its use is non-rotationally symmetrical Workpieces can be formed relatively quickly without cutting can.

The invention solves the problem by a method with the Features according to claim 1. Furthermore, the invention solves the task by a pressure rolling machine with the features according to claim 8. Advantageous developments of the invention result from the following description, the drawing as well as the subclaims.

In the inventive method and the inventive The pressure rolling machine is not just the forming roll but also the preform itself during the forming process at least temporarily with respect to the spindle axis of rotation move radially. The radial adjustment of the preform takes place in coordination with the radial movement of the forming roll regarding the preform so that by the relative Adjusting the preform and the forming roller to each other combined feed movement between the two is generated. In this way it is possible to preform the forming roll to move against while the forming roll for example is moved to its maximum roll delivery position. Should on the other hand, the forming roll is moved away from the preform for example in their minimum role delivery position, is this return movement by the radial method supports the preform away from the forming roll. Through the combined movement of the preform and the forming roll are the delivery paths of the forming roll with respect to the Preform, for example in the non-cutting manufacture of a non-rotationally symmetrical cross-section with over the circumference of the workpiece considered large cross-sectional differences, shortened compared to the known methods, which means the main times during non-cutting production with the help of the method according to the invention or with the help of the pressure rolling machine according to the invention are reduced.

In a preferred variant of the method, in particular suggested the preform during the radial Procedure of the forming roll between its maximum and minimum roller delivery position radially to in particular the delivery route between the maximum and the Shorten the minimum roll delivery position of the forming roll.

Furthermore, it is proposed to in the radial direction Forming roll seen the preform between two defined Positions back and forth with respect to the spindle rotation axis to move. So it is advantageous to have the preform in a radial Direction towards the forming roll seen in a first position with the greatest radial distance to the spindle axis of rotation and one radially to adjust second position, which in radial Direction towards the forming roll seen a smaller radial Distance from the spindle axis of rotation than the first Position. The distance the preform is in its second position to the axis of rotation of the spindle, if necessary also go to zero, leaving the preform in its second Position is arranged concentrically to the spindle axis of rotation. This results in the lowest infeed path for the forming roll, when the preform is in its first position with the largest radial distance to the spindle axis of rotation is moved while the forming roll at the same time in its maximum Roll delivery position, and the preform in their second position is moved when the forming roll in their minimum roll delivery position. In particular if the preform and the forming roll in this procedure with the same adjustment paths radially back and forth can be moved in this way halving the infeed movement the forming roll and thus also a total Halving of the main time reached during this forming process become.

In a further variant of the method, it is proposed that the preform with respect to the spindle axis of rotation during the Tend to deform. By tilting the preform this with its longitudinal axis at a predetermined angle with respect to the spindle axis of rotation, so that when forming on Workpiece sections can be molded which with respect to the longitudinal axis of the preform under a defined Angle run.

The preform is used in a preferred process variant formed from a sheet metal blank by non-cutting shaping. For this purpose, the sheet metal blank can, for example, be placed in the spinning mill clamped and through the forming roller into a Preform formed with a rotationally symmetrical cross section become. It is also conceivable for the preform to be used by others non-cutting shaping processes, such as deep drawing, to manufacture from the sheet metal blank and only then the preform clamp in the spinning roll machine.

It is also proposed that the preform be formed by non-cutting shaping at least in sections to a non-rotationally symmetrical To shape cross section before entering the Press-rolling machine clamped for shaping the workpiece becomes. With this variant of the method, it is possible to use the non-rotationally symmetrical cross-sectional sections the method according to the invention specifically rolled areas be a rotationally symmetrical or also a modified non-rotationally symmetrical cross-sectional shape have.

In a particularly preferred variant of the invention The process is proposed to be tubular Preform with rotationally symmetrical or non-rotationally symmetrical Cross-sectional shape to use with their two ends between two spindles on the spinning mill is held. The preform is in this training measured in length so that it is a double workpiece can be manufactured. For this purpose the preform at an intermediate section between the two Ends drawn through the forming roll and the preform in the separated intermediate section is then cut off, creating two workpieces. Through this process variant it is possible in a single forming step Reshape areas on two workpieces simultaneously whereby the manufacturing time for each of the two Total workpieces is shortened.

According to another aspect of the invention, a spinning roll machine proposed as defined in claim 8 is. In this spinning roll machine according to the invention Workpiece holder used to hold the preform of the part to be manufactured Workpiece serves, on the one hand, non-rotatably with the spindle connected, but on the other hand with respect to the spindle axis of rotation radially movably attached to the spindle. Of Furthermore, in this press-rolling machine according to the invention proposed to provide an actuator that for radial Adjusting the workpiece holder with respect to the Spindle axis of rotation is coupled to the workpiece holder.

Due to the inventive design of the pressure rolling machine is a radial one in a very reliable way Adjusting the preform with respect to the spindle axis of rotation possible to refer in particular to those previously mentioned combined described on the inventive method Realize movement between the preform and the forming roll.

In a preferred embodiment of the invention The pressure rolling machine is the actuator for the workpiece holder and / or the feed device of the forming roll the drive of the spindle coupled such that the actuator the workpiece holder and / or the delivery device the forming roller depending on the angle of rotation of the spindle radially adjust or adjust. Thanks to the control technology Coupling the actuator or the delivery device with the spindle it is achieved that an exact match the radial adjustment movement of the workpiece holder and, if provided, also an exact radial one at the same time Adjustment of the forming roller in relation to the rotational position or the angle of rotation of the preform is possible.

The actuator has a particularly preferred development the press-rolling machine to the side of the workpiece holder arranged control roller, which to the radial Adjustment of the workpiece holder under pretension abuts the peripheral surface of the workpiece holder. The Use of a control roller for the radial adjustment of the Workpiece holder has the advantage of being different Workpiece holders are adjusted radially with the same control roller can be, which makes a particularly flexible use the press rolling machine for a wide variety of non-rotationally symmetrical workpieces is possible.

To adjust the workpiece holder radially, use a preferred development of this embodiment Control roller used, which is radially adjustable, so that with a radial adjustment of the control roller at the same time the workpiece holder is also shifted radially. The radial Adjusting the control roller has the advantage that at appropriate control of the control role without much effort different workpiece cross sections manufactured can be. It is suitable for adjusting the control roller for example, a hydraulically operated cylinder electric servomotor or similar, with which the control roller be shifted with respect to the spindle axis of rotation can. For a meshing connection, the control roller and provide the workpiece holder with a toothing his.

It is also proposed to use the control role or the workpiece holder a rotating, non-rotationally symmetrical Form control surface with the peripheral surface of the respective function partner, i.e. the peripheral surface the workpiece holder or the peripheral surface the steering roller is in contact.

In this embodiment, the counter surface is Control surface is usually rotationally symmetrical, which enables a particularly precise adjustment of the workpiece holder becomes possible. If desired, however also the counter surface with which the control surface is in contact stands, also formed non-rotationally symmetrical be, which results in a combined actuating movement on the Workpiece holder results.

With the further developments described above, the actuating movement the workpiece holder by the non-rotationally symmetrical Control surface causes. It is done by the mechanical coupling of the control roller to the workpiece holder an adjustment of the workpiece holder in real time without that any dead times that occur with an electrical Regulation may arise, are given. The Control role is in this embodiment by a appropriate friction between the workpiece holder and the control roller from the rotating workpiece holder taken with the corresponding actuating movement of the non-rotationally symmetrical control surface is effected. Alternatively, the control role can also have an independent one Have rotary drive.

In order to adjust the workpiece holder even more flexibly realize and to replace the workpiece holder additionally to facilitate, it is also proposed, too in the case of these developments, the control roller is also radial adjustable.

For radial preloading of the workpiece holder against the Control role is in a particularly preferred training of this embodiment proposed that Forming roller seen diametrically with respect to the spindle axis of rotation in relation to the control roller so that the Workpiece holder when forming from the forming roll against the control roller is pressed. This has the advantage that on elaborate clamping devices that hold the workpiece pretension against the control roller, are waived can.

Alternatively, it is proposed to be diametrically opposed to the Control roller to arrange a tension roller, which the workpiece holder biased against the control roller. By using the tension pulley is a very precise adjustment of the Preload force possible with which the workpiece holder on the Control role is present. Furthermore, it is possible to To make tensioner adjustable so that the preload can optionally be varied.

In an alternative embodiment of the pressure rolling machine the actuator has one instead of the control roller Collet on which is pushed onto the workpiece holder and is movable relative to it. The collar is in turn coupled with a lifting device with which the Adjusting ring radially adjusted with respect to the spindle axis of rotation can be to the workpiece holder with respect to the spindle axis of rotation to relocate. With the help of the collar is one particularly exact relocation of the workpiece holder possible, being beyond, especially when used several evenly distributed over the circumference of the preform Forming rolls the workpiece holder in different Directions shifted with respect to the different forming rolls can be.

So that the preform is inclined with respect to the spindle axis of rotation can also be proposed between the spindle and to provide a swivel device for the workpiece holder, with the workpiece holder with respect to the spindle axis of rotation can be pivoted. This makes it possible also manufacture non-rotationally symmetrical workpieces, where those to be formed by the spinning roll machine Areas with their axes of symmetry below a predetermined Angle to the longitudinal axis of symmetry of the preform. Of Furthermore, the swivel device enables a variable Changing the angle of inclination of the preform with respect to the Spindle axis of rotation, so that, if necessary, also swiveling the workpiece holder possible during the forming process is.

If an adjusting ring for the workpiece holder is used with this with the swivel device equipped embodiment of the pressure rolling machine also proposed the collar through a spherical bearing to be pivoted in a retaining ring, while the lifting device is hinged to the retaining ring. This ensures that the workpiece holder together pivoted with the adjusting ring with respect to the retaining ring can be while at the same time by radial adjustment of the retaining ring the radial displacement of the workpiece holder becomes possible.

So that the torque of the spindle is as low as possible Losses can be transferred to the workpiece holder without the radial adjustment movement of the workpiece holder opposing transverse forces arise further proposed between the workpiece holder and the spindle to provide a compensating coupling that Workpiece holder couples non-rotatably with the spindle.

Use is used as a compensating coupling, for example a crank clutch or the use of a universal joint pair proposed, both of which are compact Construction particularly good for coupling the workpiece holder with the spindle.

Fig. 1

eine Schnittansicht eines als Katalysatorgehäuse dienenden nicht-rotationssymmetrischen Werkstücks;

Fig. 2

eine Schnittansicht eines ersten Ausführungsbeispieles einer erfindungsgemäßen Drückwalzmaschine mit durch eine Steuerrolle radial verstellbarer Werkstückaufnahme, welche durch eine Kurbelkupplung drehfest mit der Spindel verbunden ist;

Fig. 3

eine Schnittansicht der Drückwalzmaschine nach Fig. 2 mit radial verlagerter Werkstückaufnahme;

Fig. 4

ein Diagramm nach dem Stand der Technik, in dem die Verstellbewegung einer Drückrolle bezogen auf eine vollständige Umdrehung einer Vorform gezeigt ist;

Fig. 5

ein Diagramm, in dem die Verstellbewegung einer Umformrolle und die Verstellbewegung einer Vorform bei der erfindungsgemäßen Drückwalzmaschine nach Fig. 2 bezogen auf eine vollständige Umdrehung der Vorform gezeigt ist;

Fig. 6

eine Vorderansicht der Drückwalzmaschine nach Fig. 2 mit teilweise geschnittener Werkstückaufnahme und radial verfahrbarer Steuerrolle;

Fig. 7

eine geschnittene Vorderansicht einer alternativen Ausführungsform der Drückwalzmaschine nach Fig. 2 mit einer Werkstückaufnahme mit elliptischer Umfangsfläche;

Fig. 8

eine geschnittene Vorderansicht einer zweiten alternativen Ausführungsform der Drückwalzmaschine nach Fig. 2 mit einer elliptischen Steuerrolle;

Fig. 9

eine geschnittene Seitenansicht eines zweiten Ausführungsbeispiels einer erfindunsgemäßen Drückwalzmaschine mit einem Stellring zum Verstellen der Werkstückaufnahme;

Fig. 10

eine geschnittene Seitenansicht der Drückwalzmaschine nach Fig. 9 mit verlagerter Werkstückaufnahme;

Fig. 11

eine geschnittene Seitenansicht eines dritten Ausführungsbeispiels einer erfindungsgemäßen Drückwalzmaschine mit einer verlängerten Werkstückaufnahme;

Fig. 12

eine geschnittene Seitenansicht eines vierten Ausführungsbeispiels einer Drückwalzmaschine, bei der die Werkstückaufnahme durch ein Kreuzgelenkpaar angetrieben wird;

Fig. 13

eine geschnittene Seitenansicht eines zweiten Werkstücks, das als Katalysatorgehäuse dient, mit versetzt zueinander ausgebildeten Anschlussstutzen;

Fig. 14

eine Vorderansicht des Werkstücks nach Fig. 13;

Fig. 15

eine geschnittene Seitenansicht einer Blechronde vor dem Ausformen zu einer Vorform;

Fig. 16

eine geschnittene Seitenansicht der aus der Blechronde gefertigten Vorform;

Fig. 17

eine geschnittene Vorderansicht einer ersten Ausführungsform der Vorform nach Fig. 16;

Fig. 18

eine geschnittene Vorderansicht einer alternativen Ausführungsform der Vorform nach Fig. 16;

Fig. 19

eine geschnittene Seitenansicht eines dritten Werkstücks, das als Katalysatorgehäuse dient, mit versetzt zueinander und geneigt zur Längsachse des Gehäuses angeordneten Anschlussstutzen;

Fig. 20

eine Vorderansicht des Werkstücks nach Fig. 19;

Fig. 21

eine geschnittene Seitenansicht eines fünften Ausführungsbeispieles einer erfindungsgemäßen Drückwalzmaschine, die mit einer Schwenkeinrichtung zum Schwenken der Werkstückaufnahme versehen ist;

Fig. 22

eine geschnittene Seitenansicht der Drückwalzmaschine nach Fig. 22 mit geschwenkter Werkstückaufnahme; und

Fig. 23

eine geschnittene Seitenansicht eines sechsten Ausführungsbeispieles einer erfindungsgemäßen Drückwalzmaschine mit zwei Spindeln zum Bearbeiten eines Doppelwerkstücks.

The invention is explained in more detail below on the basis of six exemplary embodiments with reference to the drawing. In it show:

Fig. 1

a sectional view of a non-rotationally symmetrical workpiece serving as a catalyst housing;

Fig. 2

a sectional view of a first embodiment of a pressure rolling machine according to the invention with a workpiece holder radially adjustable workpiece holder, which is rotatably connected to the spindle by a crank coupling;

Fig. 3

a sectional view of the pressure rolling machine of Figure 2 with a radially displaced workpiece holder.

Fig. 4

a diagram according to the prior art, in which the adjustment movement of a spinning roller is shown based on a complete revolution of a preform;

Fig. 5

a diagram in which the adjusting movement of a forming roller and the adjusting movement of a preform in the press-rolling machine according to the invention according to FIG. 2 is shown based on a complete revolution of the preform;

Fig. 6

a front view of the pressure rolling machine of Figure 2 with partially cut workpiece holder and radially movable control roller.

Fig. 7

a sectional front view of an alternative embodiment of the pressure rolling machine of Figure 2 with a workpiece holder with an elliptical peripheral surface.

Fig. 8

a sectional front view of a second alternative embodiment of the pressure rolling machine of Figure 2 with an elliptical control roller.

Fig. 9

a sectional side view of a second embodiment of a press-rolling machine according to the invention with an adjusting ring for adjusting the workpiece holder;

Fig. 10

a sectional side view of the spinning roller machine of Figure 9 with a shifted workpiece holder.

Fig. 11

a sectional side view of a third embodiment of a pressure rolling machine according to the invention with an extended workpiece holder;

Fig. 12

a sectional side view of a fourth embodiment of a pressure rolling machine, in which the workpiece holder is driven by a pair of universal joints;

Fig. 13

a sectional side view of a second workpiece, which serves as a catalyst housing, with staggered connecting pieces;

Fig. 14

a front view of the workpiece of Fig. 13;

Fig. 15

a sectional side view of a sheet metal blank before forming into a preform;

Fig. 16

a sectional side view of the preform made from the sheet metal blank;

Fig. 17

a sectional front view of a first embodiment of the preform of FIG. 16;

Fig. 18

a sectional front view of an alternative embodiment of the preform of FIG. 16;

Fig. 19

a sectional side view of a third workpiece, which serves as a catalyst housing, with staggered to each other and inclined to the longitudinal axis of the housing arranged connection piece;

Fig. 20

a front view of the workpiece of Fig. 19;

Fig. 21

a sectional side view of a fifth embodiment of a pressure rolling machine according to the invention, which is provided with a pivoting device for pivoting the workpiece holder;

Fig. 22

a sectional side view of the pressure rolling machine of Figure 22 with the workpiece holder pivoted. and

Fig. 23

a sectional side view of a sixth embodiment of a pressure rolling machine according to the invention with two spindles for machining a double workpiece.

The inventive press rolling machine 10 is particularly for chipless production of a non-rotationally symmetrical Workpiece 12 used, as it is for example in Fig. 1st is shown. The workpiece 12 shown in Fig. 1 serves as Housing for receiving a ceramic monolith 13 of an exhaust gas catalytic converter.

The workpiece 12 has a non-rotationally symmetrical cross section Base body 14 on its two Each ends in rotationally symmetrical connecting pieces 16 transforms.

2 and 3 is a sectional side view first embodiment of a pressure rolling machine 10a shown. The pressure rolling machine 10a has a spindle 18a on, in a known manner with a drive of the press rolling machine 10a is coupled. There is one in the spindle 18a Chamber 20a formed, the end of the spindle 18a is open. A compensating clutch is in the chamber 20a 22a used, one on the front of the Spindle 18a provided workpiece holder 24a rotatably with the spindle 18a connects, as will be explained later becomes.

The workpiece holder 24a serves to clamp a preform 26 of the workpiece to be manufactured 12. The base body 27 of the Preform 26 with which the preform 26 in the workpiece holder 24a has an approximately elliptical cross section Shape as shown by the dashed line in Fig. 2 is indicated.

For non-cutting forming of the preform 26 into the workpiece 12 is at least one Umformrol1e on the pressure rolling machine 10a 28a provided, both radially and axially with respect the spindle axis of rotation S of the spindle 18a adjustable is. The forming roller 28a is so with the drive of the Spindle 18a coupled that the forming roller 28a depending from the rotational position of the preform 26 with respect to the Spindle rotation axis S is adjusted.

The pressure rolling machine 10a shown in FIGS. 2 and 3 is characterized in that the workpiece holder 24a relative to the spindle 18a and thus relative to the spindle axis of rotation S adjusted radially with the aid of an actuator 30a can be, while the preform 26 with respect the spindle axis of rotation S and thus with respect to the forming roller 28a is shifted.

So that the workpiece holder 24a relative to the spindle 18a can be shifted without loss of torque transmission comes, is in the pressure rolling machine 10a a crank clutch 32a is used as a compensating clutch 22a. The crank clutch 32a has one with the spindle 18a firmly connected drive pulley 34a. The drive pulley 34a is by means of a driving disk 36a with an output disk 38a coupled by coupling members 40a in such a way that the driven pulley 38a relative to the drive pulley 34a can be displaced radially, but a torque from the drive pulley 34a to the driven pulley 38a can be transmitted. The driven pulley 38a is slidably between the end face of the spindle 18a and one attached to this cover 42a. At the the end of the driven disk facing away from the spindle 18a 38a, the workpiece holder 24 is releasably attached to it.

Due to the previously described crank clutch 32a Workpiece holder 24a non-rotatably connected to the spindle 18a, the crank clutch 32a simultaneously being radial Displacement of the workpiece holder 24a with respect to the spindle axis of rotation S within the area delimited by the cover 42a allows.

As an actuator 30a with which the workpiece holder 24a radially can be adjusted with the spinning roll machine 10a a rotatably mounted control roller 44a is used. The Control roller 44a is arranged on the side of the workpiece holder 24a and has a control surface 46a with which it abuts the peripheral surface 48a of the workpiece holder 24a. The workpiece holder 24a becomes when the preform is formed 26 by the forming roller 28a, which is with respect to the spindle axis of rotation S arranged diametrically opposite the control roller 44a is biased against the control roller 44a. By the control roller 44a becomes frictionally engaged by the rotating one Workpiece holder 24a taken.

In the embodiment shown in FIGS. 2 and 3 the pressure rolling machine 10a is both the control surface 46a the control roller 44a and the peripheral surface 48a of the Workpiece holder 24 is rotationally symmetrical. Around the workpiece holder 24a with respect to the spindle axis of rotation S. to shift is the control roller 44a in this embodiment designed radially adjustable and is for example with the help of an actuator radially with respect to Spindle rotation axis S adjusted. In that the control role 44a under prestress on the peripheral surface 48a of the workpiece holder 24a rests, the workpiece holder 24a in a defined position with respect to the spindle axis of rotation S kept.

As soon as the forming roller 28a presses against the preform 26, to form the preform 26 into the workpiece 12 the control roller 44a a defined stop for the Workpiece holder 24a, so that it only corresponds to the Position of the control roller 44a relative to the spindle axis of rotation S can be adjusted.

By a targeted radial adjustment of the control roller 44a depending on the angle of rotation or the rotational position of the Preform 26 can preform 26 relative to forming roll 28a be shifted, as Fig. 3 shows. Through the control role 44a can consequently the workpiece holder 24a and thus the Preform 26 is radially adjusted with respect to forming roller 28a be so that with appropriate coordination of the delivery movement the preform 26 and the feed movement of the forming roll 28a, the feed path required for the forming roller 28 compared to the known press rolling machines are shortened.

4 is a diagram of the infeed movement Forming roll related to the rotational position or angle the preform 26 in a conventional spinning mill shown according to the prior art. To form a rotationally symmetrical connecting piece 16 on the non-rotationally symmetrical, elliptical preform 26 is the Forming roll during one complete revolution of the preform 26 between a maximum roll delivery position R1 and a minimum roll delivery position R2 back and forth emotional. The total required delivery route between the Roll delivery position R1 and the roll delivery position R2 is indicated with A in the diagram.

5 is the same forming process with that of the invention Spinning roll machine 10a shown. Even with the Press-rolling machine 10a is the forming roller 28a between a maximum roll delivery position R1 and a minimum Roll delivery position R2 moved back and forth during molding. At the same time, however, the preform 26 also becomes a first Position P1 moves at a maximum distance x to the spindle axis of rotation S. After reaching this first one Position P1 will take the preform 26 to a second position P2 moves back in which the preform 26 is concentric to the spindle axis of rotation S is arranged. In the case of FIG. 5 shown diagram, the preform 26 then reaches its first Position P1, if at the same time the forming roller 28a in reaches its maximum roll delivery position R1. In return the preform 26 then reaches its second position P2, when the forming roll 28a is in its minimum roll delivery position R2 is moved. To the delivery movements for both to minimize the preform 26 as well as for the forming roll 28a, If possible, both the preform 26 as well as the forming roller 28a delivered to the same extent, so that the delivery path of the preform 26 and the delivery path of the Forming roller 28a compared to the conventional method corresponds to 1/2 A each.

Since the forming roller 28a is optimized during the forming Process parameters compared to that with reference only half of the method described in FIG. 4 Cover delivery path A while forming preform 26 the main time is halved accordingly for molding the preform 26 compared to that with reference known spinning roll machine described in FIG.

6 is a front view of that in FIGS. 2 and 3 shown press-rolling machine 10a, the Workpiece holder 24a is shown cut. Like Fig. 6 can be seen in this first embodiment the pressure rolling machine 10a radially adjusts the control roller 44.

In Fig. 7 is an alternative embodiment of the pressure rolling machine 10a '. In this embodiment points the workpiece holder 24a 'has an elliptical cross-sectional shape while the control roller 44a 'is rotationally symmetrical Control surface 46a 'has. The elliptical shape of the Workpiece holder 24a 'brings about this in FIG. 7 Embodiment during the downward movement of the workpiece holder 24a 'on the control roller 44a' the radial displacement the workpiece holder 24a '.

8 is a second alternative embodiment of the Spinning roll machine 10a "shown in which the workpiece holder 24a "a rotationally symmetrical peripheral surface 48a" has, while the control surface 46a "of the control roller 44a" is elliptical. In this embodiment the Press rolling machine 10a "is the radial movement of the workpiece holder 24a "due to the elliptical shape of the control roller 44a ", wherein the control roller 44a" by a rotary drive coupled to the spindle drive rotatable is driven.

9 and 10 is a second embodiment of a pressure rolling machine 10b according to the invention. The Press-rolling machine 10b differs from that previously described with reference to FIGS. 2 and 3 Press rolling machine 10a only by the actuator used 30b.

So in the second embodiment, the spinning roll machine 10b, as a control member 30b a closed collar 60b used, the concentric the rotationally symmetrical Encloses workpiece holder 24b. Between the workpiece holder 24b and the collar 60b is a bearing arrangement 62b arranged, the workpiece holder 24b relative to the collar 60b rotatably. On the outer circumference 64b a lifting device 66b is articulated on the adjusting ring 60b, with the collar 60b and thus the workpiece holder 24b can be adjusted radially relative to the spindle axis of rotation S. can.

The use of the adjusting ring 60b has the advantage that with With the help of the lifting device 66b, the workpiece holder 24b is relative to the spindle axis of rotation S can be adjusted in a very defined manner can. If several forming rollers 28b are used, it is also possible through the use of several lifting devices 66b, which is evenly distributed on the outer circumference 64b of the Collars 60b are hinged to the workpiece holder 24b defines the different forming rolls 28b to relocate.

In Fig. 11 is a third embodiment of a press rolling machine 10c, the structure of which essentially corresponds to that of FIG previously described with reference to FIGS. 9 and 10 Structure of the second embodiment corresponds. The only Difference of the pressure rolling machine 10c compared to that The press roll machine 10b is the workpiece holder used 24b. In this third embodiment, the workpiece holder 24b axially elongated and has a holding opening 68c with a correspondingly large axial length on. The pressure rolling machine 10c shown in Fig. 11 becomes used especially for preforms 26 with a large axial length, causing undesirable kinking of the preform 26 is effectively prevented during forming. In the case of FIG. 11 The application shown is a partially edited one Preform 26 used, on which already one of the connecting pieces 16 is formed and in the ceramic monolith 13 has been used. The preform is 26 not yet above the longitudinal axis L and below the Longitudinal axis L shown finished processed.

Fig. 12 shows a fourth embodiment of an inventive Press rolling machine 10d. The fourth embodiment essentially corresponds to that with reference 9 and 10 described second embodiment. The only difference compared to the pressure rolling machine 10d the pressure rolling machine 10b is the compensating clutch used 22d.

In the embodiment shown in FIG. 12, as Compensating coupling 22d a pair of universal joints 70d used, on the one hand on the shaft of the spindle 18d and on the other hand releasably attached to the back of the workpiece holder 24d is. So that the workpiece holder 24d defines radially is guided, the workpiece holder 24d has a radial outwardly projecting, circumferential retaining flange 72d on. The holding flange 72d is between the front of the Spindle 18d and the cover 42d releasably attached to it slidably guided. As an actuator 30d is also at this embodiment uses a collar 60d, the can be adjusted radially with the aid of a lifting device 66d can.

FIG. 13 shows a further workpiece 12b, which with the previously described pressure rolling machines 10a to 10d can be. In this workpiece 12b are the connecting pieces 16b axially offset from one another on the base body 14b of the workpiece 12b, as also shown in FIG. 14, in which a front view of the workpiece 12b is shown.

In all the previously described press-rolling machines 10a to 10d, a preform 26 was used, which has a non-rotationally symmetrical Has base body 14. Alternative is it is also possible to use a preform 26c with rotationally symmetrical Base body 14c with a corresponding design of the To shape workpiece holder 24, as shown in FIG. 15 and 16 is shown. To do this, a sheet blank is first used 74c (see FIG. 15) is a rotationally symmetrical pot 76c (see FIG. 16), for example by deep drawing or also formed by pressure rolling. Then the Pot 76c inserted in the pressure rolling machine 10 and the Pot 76c through the combined movement of the workpiece holder 24 and the forming roller 28 are formed so that the pot 76c sections non-rotationally symmetrical Cross-section shows how it, for example, in FIGS. 17 and 18 is shown.

19 and 20 show, it can be used in certain applications also be required a workpiece 12d to manufacture, in which the connecting piece 18d under a Angle inclined to the longitudinal axis L of the base body 16d.

21 and 22 is a fifth embodiment a pressure rolling machine 10e shown, with which Workpieces 12d can be manufactured. The structure of the Press-rolling machine 10e essentially corresponds to the structure of the pressure rolling machine shown with reference to FIG. 11 10c.

In the fifth embodiment, the workpiece holder 24e but not directly on the spindle 18e on one by a swivel device 80e on the Spindle 18e held, rotatably connected to this Swivel unit 82e provided. The pivot unit 82e has likewise a chamber 20e in which as a compensating clutch 22e, a crank clutch 32e is received. With help the crank coupling 32e is the workpiece holder 24e on the Swivel unit 82e held radially displaceable.

The swivel unit 82e can be operated using the swivel device 80e about a transverse to the spindle axis of rotation S. Pivot axis 84e can be pivoted relative to the spindle 18e. The swivel device 80e has two for this purpose articulated in the spindle 18e, radially into the spindle 18e protruding cylinders 86e. The cylinders 86e are with their Ends hinged to a common rack 88e. The Rack 88e stands with one on the swivel unit 82e toothing provided concentrically around the pivot axis 84e 90e engaged. Even in the fifth embodiment is the workpiece holder 24e with the help of an adjusting ring 60e radially adjustable with respect to the spindle axis S. In this embodiment, however, the collar 60e by a spherical bearing 92e in a concentric to the Adjustment ring 60e arranged retaining ring 94e pivotally mounted. The lifting device 66e is in turn on the retaining ring 94e hinged.

As FIG. 22 shows, the swivel unit 82e can be positioned in front of or during the pressure rolling together with the workpiece holder 24e are inclined with respect to the spindle 18e in such a way that the preform 26 with its longitudinal axis L at an angle γ inclined to the axis of rotation S of the spindle. It enables the spherical bearing 92e an adjustment of the adjusting ring 60e with respect to the retaining ring 94e and thus also with respect to the lifting device 66e. After tilting the Swivel unit 82e becomes the swivel unit 82e from the Spindle 18e driven and the connecting piece 18d in known Formed by forming rollers 28e on the preform 26.

23 is a sixth embodiment of one Spinning roll machine 10f shown. The pressure rolling machine 10f has two spindles 18f arranged opposite one another mutually facing workpiece holders 24f. The order from the spindle 18f and the workpiece holder 26f that previously described with reference to FIGS. 2 and 3 Spindle workpiece holder arrangement. In the 23 spindle 18f shown on the right is also axial adjustable so that a between the two spindles 18f Preform 26 of predetermined length can be clamped. The Preform 26 is dimensioned so that it is a double workpiece 100 can be manufactured.

After the preform 26 has been clamped in, a forming roll is formed 28f delivered radially while simultaneously holding the workpiece 24f moved radially back and forth by the amount X. become. The cross-section is non-rotationally symmetrical Preform 26 symmetrical between their two Ends 102 a rotationally symmetrical intermediate section 104 formed. After the intermediate section 104 has been formed the intermediate section 104 is separated so that two individual workpieces arise.

In the press rolling machine referenced with reference to FIG. 23 10f can thus simultaneously from a preform 26 two individual workpieces are manufactured, which then can be further processed.

The exemplary embodiments described above only represent some ways in which the workpiece holder 24 designed to be radially movable relative to spindle 18 can be. Embodiments are also conceivable for which the workpiece holder, for example, by a Concentric fixture in a neutral position is held to the spindle axis of rotation S.

Claims (20)

Process for the non-cutting production of a non-rotationally symmetrical workpiece on a spinning roll machine, in which a preform (26) of the workpiece (12) is held on a rotatable spindle (18) of the spinning roll machine (10) and is rotated by the spindle (18) and at least one shaping roller (28) for shaping the preform (26) into the workpiece (12) without cutting is moved radially with respect to the rotating preform (26), wherein the forming roll (28) is at least temporarily moved radially back and forth between a maximum and a minimum roll delivery position (R1, R2) depending on the angle of rotation of the preform (26), characterized, that the preform (26) is at least temporarily radially adjusted depending on its angle of rotation with respect to the spindle axis of rotation (S). Method according to claim 1,
characterized in that the radial adjustment of the preform (26) takes place during the radial movement of the forming roller (28) between the maximum and the minimum roller delivery position (R1, R2). Method according to claim 1 or 2,
characterized, that the preform (26), viewed in the radial direction towards the forming roller (28), is adjusted radially between a first position (P1) with the greatest radial distance from the spindle axis of rotation (S) and a second position (P2), which is in the radial direction towards the forming roller ( 28) has a smaller radial distance from the spindle axis of rotation (S) than the first position (P1), and that the preform (26) is moved to its first position (P1) when the forming roll (28) is in its maximum roll delivery position (R1), while the preform (26) is moved to its second position (P2) when the forming roll (28) is in its minimum roll delivery position (R2). Method according to one of claims 1 to 3,
characterized in that the preform (26) is inclined with respect to the spindle axis of rotation (S) during the shaping such that the preform (26) extends with its longitudinal axis (L) at a predetermined angle (γ) with respect to the spindle axis of rotation (S). Method according to one of claims 1 to 4,
characterized in that the preform (26) is formed from a sheet metal blank (74) by non-cutting shaping. Method according to one of claims 1 to 5,
characterized in that the preform (26) is formed by non-cutting shaping, at least in sections, to a non-rotationally symmetrical cross-section before it is clamped in the pressure-rolling machine (10) for shaping the workpiece (12). Method according to one of claims 1 to 6,
characterized, that the tubular preform (26) is held with its two ends (102) between two spindles (18), that the length of the preform (26) is dimensioned such that a double workpiece (100) can be manufactured, that the preform (26) is drawn in at an intermediate section (104) by the shaping roller (28) and that the preform (26) is cut off in the region of the drawn-in intermediate section (104), two workpieces (12) being formed. Press-rolling machine, in particular for carrying out the method according to one of claims 1 to 7, with a rotatable spindle (18), a workpiece holder (24) held in a rotationally fixed manner on the spindle (18) for holding a preform (26) of a workpiece (12) and at least one forming roller (28) which is radially adjustable with respect to the spindle axis of rotation (S) by an infeed unit, characterized, that the workpiece holder (24) is mounted on the spindle (18) so as to be radially movable with respect to the spindle rotation axis (S) and that an actuator (30) is provided which is coupled to the workpiece holder (24) for the radial adjustment of the workpiece holder (24) with respect to the spindle axis of rotation (S). Press rolling machine according to claim 8,
characterized in that the actuator (30) of the workpiece holder (24) and / or the feed unit of the forming roller (28) are or are coupled to the drive of the spindle (18) such that the actuator (30) the workpiece holder (24) and / or the infeed device radially adjust or adjust the forming roller (28) depending on the angle of rotation of the spindle (18). Press rolling machine according to claim 8 or 9,
characterized in that the actuating member (30) has a control roller (44) which is arranged on the side of the workpiece holder (24) and which bears against the circumferential surface of the workpiece holder (24) under prestress for the radial adjustment of the workpiece holder (24). Press rolling machine according to claim 10,
characterized in that the control roller (44) is radially adjustable. Press rolling machine according to claim 10 or 11,
characterized in that the control roller (44) or the workpiece holder (24) has a circumferential, non-rotationally symmetrical control surface (46) with which the control roller (44) or the workpiece holder (24) on a preferably rotationally symmetrical peripheral surface of the workpiece holder (24) or the control roller (44) is under tension. Press rolling machine according to one of claims 10, 11 or 12,
characterized in that the forming roller (28) is arranged diametrically opposite the control roller (44) with respect to the spindle axis of rotation (S) and the workpiece holder (24) against the control roller (44) when the preform (26) held in the workpiece holder (24) is deformed ) preloaded. Press rolling machine according to one of claims 10, 11 or 12,
characterized in that a tensioning roller is arranged diametrically opposite the control roller (44) and biases the workpiece holder (24) against the control roller (44). Press rolling machine according to claim 8 or 9,
characterized in that the actuator (30) has an adjusting ring (60) which is pushed onto the workpiece holder (24) and is movable relative to the latter, and a lifting device (66) which is coupled to the adjusting ring (60) and is radial with respect to the Spindle axis of rotation (S) for the radial adjustment of the adjusting ring (60) is adjustable. Press rolling machine according to one of claims 8 to 15,
characterized in that between the spindle (18) and the workpiece holder (24) there is a pivoting device (80) with which the workpiece holder (24) can be pivoted with respect to the spindle axis of rotation (S) such that the one held in the workpiece holder (24) Preform (26) of the workpiece (12) to be manufactured runs with its longitudinal axis (L) inclined at a predetermined angle (γ) with respect to the spindle axis of rotation (S). Press rolling machine according to claims 15 and 16,
characterized, that the adjusting ring (60) is pivotably supported by a spherical bearing (92) in a retaining ring (94), and that the lifting device (66) is articulated on the retaining ring (94). Press rolling machine according to one of claims 8 to 17,
characterized in that the workpiece holder (24) is rotatably connected to the spindle (18) by a compensating coupling (22). Press rolling machine according to claim 18,
characterized in that a crank clutch (32) or a universal joint pair (70) serves as a compensating clutch (22). Press rolling machine according to one of claims 10 to 19,
characterized in that the control roller (44) and a peripheral surface (48) of the workpiece holder (24) are provided with teeth.

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