DE3937913C1 - Radial rolling press - has rolling mandrel with roll pass defined by upper and lower mandrel plates - Google Patents

Abstract

The head is for use with a radial rolling machine, for selective rolling of high contours, which are undercut internally and/or externally. The inner radial limit is defined by a rolling mandrel. The axial limit of the roll pass is defined by an upper and lower mandrel plate. The rolling plate is formed by main roller (11) and profile rollers (12), in two relatively movable roller stands (17,18). There is a roller carriage (1), with guide (9), stationary roller mandrel (3), a workpiece ejector (8), and bearing blocks (2) with roller blocks and a main roller bearing (13).

Description

The invention relates to a device for a radial Die rolling machine for optionally rolling high contours, which are undercut on the inside and / or outside, the inner, radial limitation by a roller mandrel, the axial limitation of the rolling caliber by a upper and lower mandrel plate is made.

The same applicant is not pre-published light German patent application P 39 06 763.7-14 back, which is a radial die rolling machine with a rolling caliber,  the one mandrel roller and one the tool around the outside closing, radial rotating Ge driven by a motor has lower ring, the immovable mandrel roller engages the workpiece from below and the rolling caliber by a roller at the top and by a mandrel at the bottom roller connected mandrel roller plate is closed, wherein the radial die is displaceable transversely to the mandrel roller and the roller closing the roller caliber from above a rocker is rotatably mounted, the Swing axis of the rocker to the upper face of the Ra is arranged inclined and the rocker with the roller in the radial and in the axial direction from the upper end face of the radial die for opening the Ka libers is pivoted away and the axis of rotation of the mandrel roller just like the roller that closes the roller caliber at the top inclined at an acute angle to the face of the Radial die are stored, and so is the rolling plane is inclined to the horizontal, with a Ma A rocker arm is arranged through which at least one alternately pressurized by fluid pressure beatable piston-cylinder unit around a stationary on Machine housing attached swivel axis back and forth swiveling and also in the desired position  is lockable, with a Ab rotatable in the rocker Support mandrel is mounted, which in a bore of the mandrel roller immersed, the rolling caliber in the axial direction by a plate roller on the face of the radi algesenkes is closed, the axes of rotation of Ab support mandrel and plate roller to the end face of the radial rim are arranged inclined, and during loading and Unloading process of the radial die rolling machine Swing together with the support mandrel through the piston Cylinder unit is pivotable away from the mandrel roller.

Furthermore, the unpublished deut relates cal patent application P 39 06 763.7-14 a radial die Rolling machine with a rolling caliber that has a mandrel roller and a motor that surrounds the outside of the tool has a rotationally drivable radial die ring, wherein the immovable mandrel roller from below into the workpiece engages and the rolling caliber on top by a roller and below by a mandrel roller connected to the mandrel roller center plate is closed and the radial die is transverse to The mandrel roller is movable and the roller caliber from above roller closing in a swing arm gela gert is, the pivot axis of the rocker to the upper End face of the radial die is arranged inclined and  the rocker with the roller in radial and in axial Direction from the top face of the radial die can be swung away to open the caliber and the The axis of rotation of the mandrel roll as well as that of the roll caliber top roller at an acute angle tends to the end face of the radial die, and the roller plane is also inclined to the horizontal, a rocker is attached above the machine housing is arranged, which by at least one piston-cylinder Unit attached to a stationary on the machine housing Swivel axis swivels back and forth and in the desired position can also be locked, with the swing arm a support mandrel is rotatably mounted, which with a Boh tion is provided, in which an extended part of the mandrel roller immersed, the rolling caliber in the axial direction by a plate roller on the face of the radi algesenkes is closed, the axes of rotation of Ab support mandrel and plate roller to the end face of the radial rim lower are arranged inclined, being during loading and Unloading process of the radial die rolling machine Swing together with the support mandrel through the piston Cylinder unit is pivotable away from the mandrel roller.  

The unpublished older German patent application P 38 40 020.0-14 relates to a radial die rolling machine machine with a rolling caliber that includes a mandrel roller and a motor ro enclosing the workpiece on the outside has driven radial die, which Radial die rolling machine can be characterized should that

• a) the immovable mandrel roller from below into the Workpiece engages,
• b) with the rolling caliber above by an axial we kende, e.g. B. motorized tapered roller and below by one connected to the mandrel roller Mandrel roller plate is closed,
• c) and that the conical surface lines of the tapered roller itself cut on the axis of rotation of the radial die,
• d) and move the radial die transversely to the mandrel roller is  
• e) and the tapered roller rotatable gela in a rocker gert is, the pivot axis of the rocker upper end face of the radial die inclined is ordered and the rocker with the tapered roller in the radial and axial directions from the top Face of the radial die to open the Ka libers can be swung away,
• f) and the axis of rotation of the mandrel roller as well as that of Tapered roller to the roller plane under a sharp win kel is inclined
• g) and that the roller plane inclined to the horizontal is.

Furthermore, the unpublished older Pa tent registration characterized in that the roller plane, Guide, caliber bearing and feed cylinder to increase radial die rigidity in one plane or about are arranged in one plane, the distance between center of the mandrel roller and pick-up point for the plant piece blank is always the same and the loading of the roller machine by a simple swivel mechanism is acceptable.  

The rolling caliber in the unpublished radial Die rolling machine is formed by

• a) the radially acting die ring outside;
• b) the radially acting mandrel roller inside;
• c) the axially acting mandrel roller plate below;
• d) the axially acting tapered roller above.

Because the workpiece ejector and the mandrel roller bearing on one side, namely below the radial die gela the mandrel roller can be made stationary and therefore does not need to be moved when loading and unloading to become. This increases the rigidity in the rolling caliber and makes only one infeed axis (roller slide) for the Rela active movement of the radial die ring transversely to the mandrel roller conducive.

Due to the fixed mandrel roller, the distance between Center of mandrel roll and pick-up point of the workpiece blank on one side of the radial die rolling machine  advanced conveyor (conveyor belt) always the same. The enables the loading of the rolling machines by a simple swivel mechanism.

Another advantage is that roll level, Füh tion, caliber bearing and a possible feed cylinder for the radial die ring in one plane or practically in one level can be arranged, whereby an opti male stiffness is achieved.

Because the pivot axis of the rocker for the tapered roller End face of the radial die is arranged inclined, guides the tapered roller through min at least a cylinder or the like a movement from which simultaneously in the radial and in the axial direction tion leads away from the end face of the radial die to enable loading and unloading of the workpiece.

Through the inclined axis of the mandrel roller and taper roller to A rolling motion occurs on the workpiece, which prevents wear on the tools.

Furthermore, a high die rigidity is achieved.  

Since only a simple swivel arm mechanism is required is the workpiece between two fixed points can be moved with this swivel arm mechanism, namely the pick-up point on the conveyor on which the plant piece blank is conveyed up and the mandrel roller center the stationary mandrel roller. Extensive adjustment work thereby eliminated.

The unpublished German patent application P 39 06 763.7-14 has the advantage that above the Ma a swing arm is arranged, which by at least one piston-cylinder unit starting from alternating on both sides with fluid pressure, e.g. B. Hydrau Liköl, is to be applied to the stationary at the Maschi attached pivot point pivoted. In the Swing arm is rotatably supported by a support mandrel, which in dips a hole in the mandrel roller. The rolling caliber is in the axial direction by a plate roller on the End face of the radial die closed. The Drehach The support mandrel and plate roller face the end face of the radial die arranged inclined. This will - how also on the mandrel roller - a rolling motion on the workpiece  reached, which ver wear on the tools diminishes. During the loading and unloading process of the radial Die-rolling machine becomes the swing arm with the support mandrel by the piston-cylinder unit by pressure medium Impact swung away from the mandrel roller.

DE-AS 11 88 544 is a four-roll ring roll work with one of the two curved ring surfaces tending pair of rollers and the ring end faces tendency, with respect to the ring radially displaceable two previously known pair of rolls, in which one roll each roll zenpaares against the other in their radial distance ver is adjustable. At least one roller of each pair of rollers is drivable, the second pair of rollers automatically depending on the enlargement of the ring outside knife as a result of the deflection of this diameter in the area of the pair of rollers scanning probe roller or the like is so displaceable that it is always on the ring face acts. The reels of the second Pair of rollers are tapered and thereby characterized in that the displacement drive of the roller pair res in the sense of restoring the original  Relative position between the tapered rollers and the Ring outer diameter by means of the feeler roller or the like Chen is controllable. The slide drive is for the ra diale displacement of the pair of tapered rollers to different Shifting speeds switchable or infinitely variable adjustable. By the radial movement of the feeler roller or the like are successive limit switches or Actuates the same, through which switching pulses for Control of the slide drive for the radial ver shift of the tapered roller pair can be triggered, wherein by the movement of the feeler roller or the like Bearing frame towards the first switching impulse the outward movement of the tapered roller pair at a lower speed speed and with each subsequent switching impulse a high here speed can be switched on. Accordingly owns this known RAW a centering and diameter Facility. These are thus among other things uses to depending on the diameter and wall thickness the upper tapered roller automatically to the desired height table.  

From DE-OS 32 37 295 is a ring rolling mill with a rotating ring table for holding a die roller radially displaceable ring segments and with an eccentric trically arranged, radially adjustable mandrel roller knows. The technical problem lies in such an out formation of a ring rolling mill of the type mentioned at the beginning, that high rolling forces in a constructively safe manner can be brought and controlled. A half ring segment the die roller is inextricably linked to the ring table the. The second half ring segment of the die roller is open can be tightened on the ring table. Radial to the axis of the Ringti cal is a slideway for shifting the second Half ring segment provided. To accommodate the mandrel roller a yoke is provided which in the radial direction of the Ring table is slidably arranged. Cross to ver direction of the yoke is a segment of a ring Support wall arranged to support the die roller. A hydraulic pressure cylinder is between the stand of the yoke and the support wall.

DE-OS 29 17 369 relates to a multi-mandrel ring rolling mill machine with mounted in a rolling machine frame driven plate roller as the main roller and several, on egg nem rotatable roller table rotatably mounted and given  if necessary, mandrel supported on both sides in the working position rolling by turning the rolling table into the rolling position can be brought. The mandrel rolls are axial Slidable in relation to the roller table in lockable at different altitudes and under the Ni veau of the roller table movable. The roller table is in the roller machine frame fixed and the main roller in one slidably guided on the rolling machine frame Carriage mounted, which be against the in the rolling position sensitive mandrel roller is deliverable. On the rolling machine frame an immobile support arm is attached to which in proper distance above the roller table a bearing for the free end of the axis located in the rolling position Lichen mandrel roller is arranged. The delivery movement of the Carriage is through depending on the ring diameter a measurement controller controllable. There are two the forehead surface-processing axial rollers are provided, of which at least one is driven. One of the axial rollers is fixed on the rolling machine frame and the other axially adjustable to the ring, but radial to the mandrel roller stored stationary.

The invention has for its object a radial Ge sink rolling machine to improve that a Basic machine by exchanging a device both for internal as well as for internal and / or external rolling cut contours is provided.

The task is represented by the one in patent claim 1 characteristics resolved.

When designing the invention, the basic measure Machine provided with a device that essentially chen from a rolling carriage, the rolling carriage guide and the associated bearing blocks and the Main roller bearing, which via a clutch with the Main drive is connected. This device can be used can also be arranged on a basic machine, such as  they are the subject of German patent application P 39 06 763.7-14 forms. A decrease in the invention Direction from the radial die rolling machine is by Lö sen of the pedestals and the coupling easily carried out. This can be done e.g. B. with a basic machine probably ge according to German patent application P 39 06 763.7-14 as also by arranging a device according to the Erfin undercut contours on the basic machine Roll inside and / or outside. The user therefore needs only the carriage unit according to the invention on the La to keep and if necessary against the German cal patent application P 39 06 763.7-14 provided Exchange slide unit.

In the invention, the roll caliber is from the main roll and formed the profile rollers. The inner radial limit Tongue takes place through a rolling mandrel. The axial limit of the rolling caliber takes place through the upper and lower Thorn plate. The roller plane is at 45 ° to the horizontal inclined. The rolling carriage with the main is used for rolling roller and the trestle against the stationary mandrel after the workpiece blank has been moved over a Swivel manipulator was inserted into the machine. The  Ring grows into the rolling caliber consisting of Profilrol len and main roller. After the end of the rolling, the rolling carriage is retracted to its starting position so that the stationary mandrel from the center of the workpiece know distance gets. At the same time, the rear role lenbock by twice the aforementioned distance method. During this time, the workpiece is removed from the Roller trestles guided so that it is centered after the procedure to the rolling mandrel. With the workpiece ejector can now the workpiece is pushed out of the device.

For the high workpieces, an upper and lower working mandrel. This makes it possible at same mandrel load much smaller mandrel diameters use it. This has the consequence that the to be rolled Blank can be punched smaller so that the material loss due to the slugs to be punched out smaller is. For loading and unloading the device with upper and lower rolling mandrel, the upper rolling mandrel must be pivoted the. The switch-off when the gauge block is reached can be opened  done different ways, e.g. B. by investigation development of the outer diameter via a measuring roller, or by Switch off via feed speed of the slide or by switching off via force measurement in the profile role.

Due to the "interchangeable slide used in the invention ten ", the invention is thus suitable for rolling in NEN and / or outside undercut contours.

The radial die rolling machine, consisting of the basic system machine with the interchangeable slide with main roller and Pro filollen is equipped with a rolling caliber, the one Mandrel roller, one main roller and several, the workpiece has surrounding profile rollers, the Rotation axis of the mandrel roller and that from several profile rollers existing radial die are inclined to each other and that Rolling calibers thanks to the radial profile rollers outside, the radially acting mandrel engaging from below roll inside, the axially acting mandrel roller plate below and the axially acting tapered roller is formed from above and the mandrel roller and mandrel roller plate are connected, where the machine movements by the described method directions are known.  

In a broader sense, the radial die-rolling machine, consisting of the basic machine according to FIG. 1 in cooperation with the interchangeable slide according to FIG. 3, can be seen as a conventional two-caliber machine.

With one caliber, consisting of main roll, mandrel The radial expansion becomes the roller and mandrel roller plate of the ring and a corresponding pre-profiling one Contour created that is undercut on the outside.

With the second caliber, the profile rollers, he becomes witnessed pre-profiling by the first caliber now measured precisely finished, in such a way that the workpiece at the end of the rolling process one after the other on all profiles rolls and their exact profile and their envelope circle diameter assumes.

In the drawing, the invention is - partly schematic - illustrated by an embodiment. Show it:

Figure 1 is a radial die rolling machine, partly in the tenansicht Be, partly in section.

Figure 2 is a plan view of the carriage unit during the rolling process.

Fig. 3 is a plan view similar to Figure 1, but all the rolling carriage has returned to its starting position after the end of the rolling, so that the stationary mandrel receives the distance S from the center of the workpiece.

Fig. 4 is a plan view corresponding to Figure 3, wherein a rear roller block has been moved twice S by the amount.

Fig. 5 shows a detail mandrel roller bearing, main roller and profile roll similar to that shown in Fig. 1, but with the upper and lower mandrel.

The apparent from the drawing radial Gesenkwalzma machine has a device with a rolling carriage 1 and a rolling carriage guide 9 and the associated bearing blocks 2 . The reference numeral 13 denotes a main roller bearing, which is connected to the main drive 19 via a coupling 16 . Removal of the device from the radial die-rolling machine can be carried out easily and relatively quickly by loosening the bearing blocks 2 and the coupling 16 , so that the basic machine is moved from a z. B. by the German patent application P 39 06 763.7-14 described radial die-rolling machine can be converted to such, with which high bushings can also be rolled with which internal and / or externally profiled, undercut parts.

The rolling caliber is formed by a main roller 11 and a plurality of profile rollers 12 . The inner radial limitation is made by a rolling mandrel 3 . The axial limitation of the rolling caliber takes place through the upper and lower mandrel plates 5 and 6 .

The roller plane is ge by 45 ° to the horizontal tends.

For rolling, the rolling carriage 1 with the main roller 11 and the front and rear roller blocks 17 and 18 ge against the stationary mandrel 3 is driven after the workpiece blank has been inserted into the machine via a pivoting manipulator (not shown). The ring grows into the rolling caliber, consisting of the profile rollers 12 and the main roller 11 .

After the end of rolling, the rolling carriage 1 is retracted into its starting position, so that the stationary rolling mandrel 3 keeps the distance S ( FIG. 3) from the center of the workpiece. At the same time, the rear roller block 18 is moved twice S by the amount. The workpiece 7 is guided during this time from the roller stands 17 and 18 , so that it lies in the center of the mandrel 3 after the process. With a workpiece ejector 8 then the work piece 7 can be forced out of the device.

In the case of high workpieces, a lower and an upper mandrel 3 or 4 can be used. This makes it possible to use much smaller mandrel diameters with the same mandrel load. As a result, the blank to be rolled can be pre-punched smaller, so that the material loss due to the slugs to be punched out is smaller.

For loading and unloading, the upper bearing with the upper mandrel plate ( 5 ) or the upper bearing with the upper mandrel plate ( 5 ) and upper rolling mandrel ( 4 ) must be pivoted.

The shutdown when the gauge block is reached can be set to ver different ways:

• a) Determination of the outer diameter using a measuring roller (not shown).
• b) switching off via the feed rate of the Carriage (not shown).
• c) Switch off via force measurement in the profile roll (not shown).

Reference number 14 designates the axis of the main roll and 15 the axis of the rolling mandrel.

In the embodiment shown in the drawing, the roller block 17 has two profile rollers 12 and the roller block 18 has three profile rollers 12 . The number of rollers 12 can also be determined differently in each case.

The in the summary, in the description and in the claims described and from the drawing Characteristics can be seen both individually and in any combinations for the realization of the Er be essential.

Reference symbol list

1 roller carriage
2 bearing block
3 Lower mandrel
4 Upper mandrel
5 Upper thorn plate
6 lower mandrel plate
7 workpiece
8 workpiece ejectors
9 roller slide guide
10 axis of rotation of the workpiece
11 main roller
12 profile rolls
13 main roller bearing
14 axis of the main roller
15 axis of the rolling mandrel
16 clutch
17 Front roller block
18 Rear roller block
19 main drive
S distance

Claims (1)

1. Device for a radial die-rolling machine for optionally rolling high contours, which are undercut on the inside and / or outside, the inner, radial limitation being effected by a rolling mandrel, the axial limitation of the rolling caliber by an upper and lower mandrel plate, characterized that

• a) the rolling caliber is formed by a main roller ( 11 ) and profile rollers ( 12 ), each of which is arranged in two relatively movable roller blocks ( 17 ) and ( 18 ), respectively, in such a way that for rolling the roller carriage ( 1 ) with the Main roller ( 11 ) and the roller stands ( 17 and 18 ) against the stationary rolling mandrel ( 3 ) can be moved after the workpiece blank has been inserted into the machine via a swivel mechanism and after the end of the rolling slide ( 1 ) can be moved back to its starting position , so that the stationary rolling mandrel ( 3 ) from the center of the workpiece received from (S), while at the same time the rear roller block ( 18 ) can be moved twice S and that during this time the workpiece ( 7 ) from the profile rollers (12) of roller blocks is performed (17 and 18), so that it is located by the method with tig to the rolling mandrel (3) and then through a workpiece pusher (8) from the device heraussto bar;
• b) the entire device consisting of Walzschlit th ( 1 ) and Walzschlittenführung ( 9 ) and the associated bearing blocks ( 2 ) with the roller blocks ( 17 and 18 ) and the main roller bearing ( 13 ) after releasing a clutch ( 16 ) from the main drive ( 19 ) is removable from the radial die-rolling machine and can be exchanged for another device.