EP0215179B1 - Burnishing device - Google Patents

Description

The invention relates to a deep rolling machine or smooth rolling machine for rolling at least the surfaces eccentrically arranged on a workpiece, with means for receiving and rotating the workpiece and with at least one movable rolling device, each of which contains at least one tool holder with at least one rolling element and one tool holder at least one support element, each movable rolling device being moved along with the workpiece and the movable rolling devices being arranged in a positionally variable manner in a radial plane of the workpiece, the movable rolling device being suspended about an axis parallel to the workpiece axis on a swivel arm which in turn is about an axis to said axis parallel axis is pivotally suspended in the machine and can be locked in at least one pivot position.

Machines of the type described above have become known, for example, from DE-OS 33 33 603. The adaptation of the spatial position of the rolling devices, for example on crankshafts each with a different stroke, is associated with a high level of mechanical complexity and in terms of control technology because of the necessary calculation of angular positions of the complex mechanical system also connected with great effort. In addition, a weight-neutral position with regard to the swivel arm carrying the deep rolling devices is only possible with a very specific type of crankshaft. With any other type of crankshaft, additional inertia forces are undesirably applied to the crankshaft to be rolled by the swivel arm. In addition, the adaptation to different strokes is also very limited due to the limited pivoting possibility of the swivel arm carrying the rolling devices.

The invention is therefore based on the object of proposing a machine of the type described at the outset, with which it is possible with simple means to adapt to wide workpieces with at least different eccentricities, such as e.g. on crankshafts with different strokes, as well as at different angles of rotation of the surfaces to be machined. This adjustment should also be able to take place automatically if necessary.

According to the invention, this object is achieved in a machine of the type described in the introduction in that the movable rolling devices are arranged in a linearly variable position in a radial plane of the workpiece, the swivel axis for the swivel arm being arranged in a support device which in turn is supported by a crossbar supported on the machine stand is and is connected to adjustment drives that allow an adjustment of the position of this axis at least in one plane transverse to the crankshaft axis with at least one horizontal and / or vertical component. This is a simple constructive structure in order to achieve the desired mobility with the simplest of means. The linear position variability is easy to control in terms of size and direction and is easy to implement in terms of device technology. It is almost unlimited in size and allows you to approach any point in the radial plane with the simplest of means. Through these simple measures, said axis can be moved by the support device at least in one plane transverse to the workpiece axis, for example to the crankshaft axis, so that practically an adaptation to any stroke differences and stroke sizes and any angular position positioning is easily possible. At the same time, this makes it possible to use one or to move several complete devices completely out of the work area, so that an adaptation to a changing number of surface areas to be processed is possible in this way.

A further embodiment of the invention provides that at least one rolling device is arranged to be movable in a coordinate direction perpendicular to the radial plane mentioned. In this way, the machine can also be adapted to changing distances between the surfaces to be machined in the axial direction using the simplest of means. This increases the machine's adaptability to different workpieces.

According to another embodiment of the invention, it is proposed that at least one further rolling device is provided, at least this rolling device being arranged in a positionally variable manner in a radial plane of the crankshaft in such a coordinate direction in which the position of the rolling tools can be adapted to the pin diameter of a workpiece area to be machined is. This makes it possible to also take into account different diameters of the workpiece surfaces to be machined with a simple linear displacement, which further improves the adaptability of the machine to different workpieces.

In addition, it is also proposed according to the invention that the coordinate directions in which changes in position can be carried out run horizontally and vertically. This simplifies the construction of the machine.

A further embodiment of the invention provides that the support device comprises a slide which can be moved transversely to the crankshaft axis and which is arranged in a slide carrier with slide guide, an adjusting drive which is effective between the slide and the slide carrier being provided. This is a particularly simple construction of the support device in the form of a slide, the manufacture, arrangement and monitoring of the function of such slides being simple and requiring no complicated devices. Highly qualified specialist staff or special know-how is also not required for maintenance and thus to ensure operational readiness. The simplest mechanics that are safely mastered in all companies allow the desired adjustment.

It is further proposed according to the invention that the slide carrier is guided in a vertically movable manner on the crossbar via vertical guides and is connected to an adjustment drive supported on the crossbar, while a further adjustment drive between slide and slide carrier is effective. These very simple means expand the automatic adjustment and thus adaptability of the machine to different workpiece conditions. All movement sequences and their monitoring remain simply manageable.

A further embodiment of the invention provides that for locking the swivel arm in a swivel position on the movable carriage, two fluid cylinders acting counter to the swivel arm are provided, which swivel the swivel arm into the desired position and hold it there. As a result, the desired locking is effected in an elegant and simple manner. Unmanageable mass accelerations during positioning and subsequent locking of the swivel arm and the corresponding unpleasant effects on the entire machine are avoided.

A supplementary embodiment of the invention provides that one of the two fluid cylinders determines a first pivot position of a cylinder with its first end position and a second pivot position of the swivel arm with its second end position, the second cylinder having less force than the at least for fixing the first pivot position first cylinder is operated. This is surely the simplest possible way to move in and fix two desired positions.

Furthermore, according to the invention it is also provided that a pivotally mounted lever is provided on the swivel arm, which can be actuated by a fluid cylinder likewise arranged on the swivel arm, the free end of which can be pressed against the associated rolling device in order to bring it into a specific swivel position. With this simple means, a balancing of the rolling device, for example by means of springs, can be avoided and the rolling device is kept in the correct pivot position for repositioning with simple means and nevertheless reliably. However, it is important here, and it should be pointed out that the center of gravity of the deep rolling device lies in front of the swivel axis of the deep rolling device on the swivel arm, so that a clear direction of movement or swiveling direction of the deep rolling device is fixed.

In addition, it is also proposed according to the invention that the crossbar is held in a position-changing manner on the machine stand. In this way, an adjustment of the position of all rolling devices in the axial direction is also possible if necessary.

Furthermore, it is proposed according to the invention that at least one further rolling element and / or support element is provided on at least one tool carrier, with at least one rolling element being position-changeable in at least two positions, of which at least one position is a working position, at least the rolling element and / or at least one associated support element is kinematically connectable or connected to a power actuating means. The fact that the respective rolling device is movable and is connected to only one power actuating device ensures that only the rolling force occurs as a transverse force on the workpiece and is canceled out there. Additional lateral forces that could stress the workpiece and that result from the power actuation device are largely avoided. The presence of at least one further rolling element and / or support element, which can change position in the manner described, makes a tool exchange unnecessary in the case of corresponding workpieces, and this saves time in the production of larger series. At the same time, greater flexibility of the device is achieved because, within a certain frame, the device according to the invention can react to the design of the workpiece with a corresponding change in position of the rolling elements and / or the support elements. In the medium series range, it is also conceivable to have fewer rolling devices in a single device to be used and to move them to the location to be rolled on the workpiece and to make a selection by changing the position of the support elements and / or the rolling elements accordingly that a suitable tool is used at the respective workpiece location. Such a device can also react to different workpieces, so that a special device does not have to be provided for each special workpiece and it is no longer necessary to provide a special rolling device for each point to be rolled on the workpiece.

Furthermore, it is provided according to the invention that at least one rolling cement and / or support element is arranged on the tool carrier in a variable position. The fact that at least one rolling element and / or support element on the tool carrier is arranged such that it can be changed in position can simplify the construction of the device, at least in certain applications, and this position variability can at the same time facilitate the introduction of a workpiece into the device. Due to the change in position mentioned, it is not only possible if necessary. bring different elements to the place of use, but it is also possible to remove the corresponding element from the place of use and return it to the place of use after the insertion of a piece of value.

Another embodiment of the invention is seen in the fact that each rolling element and each support element is an element of a roller head. Roller heads with rolling elements are already known and have proven themselves. The use of such roller heads in a device of the type according to the invention further increases the economic viability of a device of the type according to the invention in that the supply of spare parts can be reduced and can essentially be limited to the roller heads. Furthermore allows the use of such roller heads a simpler construction of the device.

A supplementary embodiment of the invention provides that an independent roller head is provided for each rolling element and / or for each supporting element or supporting element pair or rolling element pair. As a result, the structure of the roller heads can be standardized, so that the same roller heads can always be used in machines with a different number of rolling elements, so that the different number of rolling elements is achieved simply by varying the roller heads.

Another embodiment of the invention provides that each roller head is arranged in a variable position on the associated tool carrier. This is an easy way to bring the respective roller head into a desired position.

Furthermore, it is proposed according to the invention in a device that corresponds to at least the generic term of claim 15 that at least one tool holder is provided with a tool holder that can be changed in position in at least two predetermined or predefinable positions, with at least one rolling element or support element that extends over the tool holder in the positions mentioned can be brought, wherein at least one rolling element in the working position and / or at least one associated support means can be kinematically connected or connected to a force actuating means. A changeable tool holder, equipped with corresponding rolling elements or support elements, is structurally simple to realize. As a result, rolling elements and support elements can be carried and guided at the same time.

It is further proposed according to the invention that the tool holder is designed as a roller head for the rolling element and / or the support element. In this way it is possible to realize the inventive idea even in structurally restricted conditions. The overall structure is thereby simplified at the same time.

Alternatively, it is proposed according to the invention that at least one tool holder carries at least one roller head. In this way, on the one hand, different equipment of the machine can be achieved in adaptation to certain production conditions and, on the other hand, it is at least partially possible to use existing roller heads.

It is further proposed according to the invention that at least two roller heads are arranged in at least two positions, of which at least one position is the working position. With a simple arrangement of this type, a large number of different workpiece dimensions can already be mastered.

A supplementary alternative of the invention provides that the roller heads are arranged on a guide for changing the position. This is a space-saving and simple construction for changing the position. The roller elements and / or support elements are then changed in their position at the same time with the roller heads.

It is then additionally proposed according to the invention that an actuating device is provided for carrying out the change in position, it then further being proposed that at least one fluid-operated piston-cylinder unit is provided as the actuating device. Actuating devices specially designed to carry out the change in position, coordinated and appropriately designed and arranged, are easy to implement and facilitate the change in position.

According to a further embodiment of the invention, it is proposed that at least one more position is provided or predeterminable for the tool holder than it carries roller heads. As a result, even with a multiple arrangement of roller heads, it is possible to achieve a position in which none of the existing roller heads is in the working position. This facilitates the overall exchange of the tools and in particular the exchange of broken rolling rolls, and it can thereby possibly. the insertion work for the insertion of the workpieces can also be facilitated.

Another embodiment of the invention provides that the movable rolling device consists essentially of two scissors-like arms which are kinematically connected to a force actuating means for generating the rolling force. Such a configuration makes it possible to exert high rolling forces on the workpiece in a small installation space, these rolling forces canceling each other out on the workpiece itself, so that one of the rolling forces resulting additional undesirable radial loading of the workpiece is prevented. It must be emphasized here that the scissor-like connection of the arms does not have to mean that a hinge point is present approximately in the middle of the arms. It is also possible to place the joint point at one end of the arms, for example, and thus to connect the ends of the arms to one another. The other ends then carry the tools and it is then possible to kinematically connect power actuating means on either side of these tools to these arms to generate the rolling force. Such a construction creates favorable leverage for generating the rolling force.
It must therefore be expressly pointed out that the scissor-like connection which connects the arms to one another in an articulated manner does not necessarily have to be designed as shown, although such a design can also be particularly expedient. In principle, of course, no scissors-like connection must be provided at all, but it is also possible to guide and move the tool carriers, for example, parallel to one another and to connect them kinematically with a force actuating means, so that the tool carriers can be moved parallel to and away from one another.

According to a further embodiment of the invention, it is proposed that a rolling device is provided with at least one rolling element and / or a support element, which is each arranged in a fixed position with respect to the associated tool carrier. For certain applications, it may be advantageous to change the rolling elements and / or support elements or to bring them into or out of the working position by means of a corresponding change in position of the entire rolling machine. The rolling elements and / or support elements must then be arranged in a fixed position in relation to the associated tool carrier.

Finally, according to the invention it is also provided that the rotary drive of the workpiece is controlled by the angle of rotation, the angle of rotation position of the workpiece and the position of at least one movable rolling device in the radial plane being mutually dependent. As a result, the workpiece surface to be machined and a rolling device to be assigned can always be brought into the correct position with one another with simple means.

A machine of the type according to the invention is usually equipped with several rolling devices. The rolling devices can also be of different types. The workpiece is driven centrally via a separate workpiece drive, if necessary. is controlled by the angle of rotation.

It is also possible and, depending on the desired flexibility, to design rolling devices designed according to the invention to be movable along a workpiece axis in a machine of the type according to the invention, so that the rolling devices can be moved into the desired and pre-programmable working positions via appropriate drive and control means, for example via programmable NC controls can be driven. The program can not only position the rolling devices themselves, but also select the tools to be positioned.

The invention will now be described with reference to the accompanying drawings, which show an embodiment for machining crankshafts are explained in more detail.

Figur 1

Festwalzgerät in Seitenensicht

Figur 2

Ansicht in Richtung des Pfeils A nach Figur 1

Figur 3

Variante zu Figur 1

Figur 4

Festwalzgerät mit Trageinrichtung und Traverse in Seitenensicht

Figur 5

Ansicht in Richtung des Pfeils B nach Figur 4

Show it:

Figure 1

Deep rolling device in side view

Figure 2

View in the direction of arrow A according to FIG. 1

Figure 3

Variant of Figure 1

Figure 4

Deep rolling device with support device and cross beam in side view

Figure 5

View in the direction of arrow B according to FIG. 4

A deep rolling device 1 or 1 'is pivotally suspended on a swivel arm 51 in the plane of the drawing by means of the articulated axis 60. The swivel arm 51, which consists of two parallel legs, also carries a lever 56, which is also pivotably arranged in the plane of the drawing, and is operatively connected to a fluid cylinder 57 which is also fastened to the swivel arm 51. The free end 58 of the lever 56 can be pressed via the fluid cylinder 57 in the manner shown in FIG. 4 against the deep-rolling device 1 or 1 ", whereby the said deep-rolling device is caused to pivot in the plane of the drawing about the pivot axis 60. With this The said deep rolling device is to be pivoted into the position shown in FIG. 4, which is used for repositioning to another type of crankshaft and for placing the devices on it rolling bearings is needed. Here, the deep rolling devices 1 and 1 'are arranged such that their center of gravity S is in the manner shown in Figure 4 in front of the pivot axis 60 so that the weight of the respective deep rolling device presses it against the free end 58 of the lever 56. During the rolling operation, the free end 58 of the lever 56 is pivoted away so that the mobility of the deep rolling device 1 or 1 'concerned is not hindered.

The swivel arm 51 in turn is pivotally suspended on a carriage 47 via an axis 40 arranged parallel to the swivel axis 60. The slide 47 is guided in a slide carrier 48 so as to be displaceable transversely to the crankshaft axis 46. Carriage 48 and carriage 47 essentially form the support device 41 for the swivel arm 51 and for the deep-rolling device 1 or 1 'attached to it.

The slide carrier 48 has two vertical guides 50, which are designed as circular guides and are moved vertically in a traverse 43 in the direction of the arrow 67. The cylinder body of a fluid cylinder, the piston rod 61 of which is attached to the slide carrier 48, is fastened to the cross member 43, this cylinder being designed as a fluid cylinder and forming the adjusting drive 44. By means of this adjustment drive 44, guided by the vertical guides 50, the slide carrier 48 can be moved and positioned vertically. The adjustment drive 44 does not have to be designed as a fluid cylinder, however. It can just as well be an electromotive adjustment drive act, the carriage 48 then being moved vertically by the electric motor, for example via a ball screw. The electric motor can have such a design that the vertical path covered by means of the ball screw can be measured exactly. Vertical positioning of the carrying device 41 is thus possible in the simplest way.

The cross member 43 supporting the entire support device is in turn supported on the machine stand 42 and can be arranged there in the direction of the arrow 59 so as to be movable and attachable. In this way, side positioning can also be made possible.

With the vertical movement of the slide carrier 48, the slide 47 is also moved vertically, which is arranged displaceably in the slide carrier 48. The adjustment drive 45 for the adjustment or displacement of the slide 47 can also be designed here, for example, as a fluid cylinder, the cylinder body then in turn being supported on a cantilever 62 of the slide carrier 48 and being fastened there, while the piston rod 63 is fastened on the slide 47. An inward and outward movement of the piston rod 63 brings about a corresponding displacement of the slide 47 in the direction of the arrow 66. Here too, of course, instead of the fluid cylinder, the adjustment drive 45 can again be effected by an elector motor, as already described. The slide guide 49 for the slide 47 is designed in the exemplary embodiment as a dovetail guide. It can save space also be designed pivoted by 90 °. However, the guidance of the carriage 47 in the carriage carrier 48 is not restricted to a dovetail guide.

Below the slide 47, once in front of and once behind the swivel arm 51, fluid cylinders 52 and 53 are attached to the slide 47. The piston rods 64 and 65 of the fluid cylinders mentioned can each be brought into contact with the swivel arm 51, acting in the opposite direction. To move the swivel arm 51 into a first swivel position 54, the fluid cylinder 53 is operated with greater force than the other fluid cylinder and the piston rod 65 is extended to its stop. As a result, the swivel arm 51 has reached the first swivel position 54. To lock this first pivot position 54, the piston rod 64 of the fluid cylinder 52 is moved against the pivot arm 51, but with less force than the force of the piston rod 65, so that in the first pivot position 54 the pivot arm 51 is clamped between the piston rods 65 and 64 and thus locked is. In this swivel position, the deep rolling devices can be placed on the bearings to be rolled.

However, it can also be retracted from the pivot arm 51 a second pivot position 55 in that the piston rod 65 of the fluid cylinder 53 is completely retracted and the piston rod 64 of the fluid cylinder 52 is now extended so far that the pivot arm 51 as a result of it Pivotal movement comes to rest against the retracted piston rod 65. The second pivot position 55 is then reached. As a result, the deep rolling device in question can be swiveled out of the working area of the machine without the basic positioning of the device having to be changed. If the second swivel position 55 is not sufficient for this, the lever 56 can also be swiveled so that the free end 58 no longer bears against the deep-rolling device 1 or 1 'and, because of the position of the center of gravity S in the plane of the drawing, it folds downward. In this way, an automatic adaptation to changing number of trunnions can be achieved while maintaining the basic positioning of the devices.

With a change of the crankshaft types, however, it often happens that not only the stroke size and the angular position of the crank pins change with the change of the crankshaft type, but also the transition radii to be rolled, the diameters, can change simultaneously or even only of the bearings to be rolled and the bearing widths of the bearings to be rolled change. This then requires a change of the tools concerned, which must be carried out manually in the prior art. A supplementary development of the machine according to the invention is also intended to remedy this deficiency and also to enable automatic adaptation of the machine for the described further changes to the different dimensions on different crankshafts. For this purpose, the respective deep rolling device must be designed accordingly. The necessary structure of such deep rolling devices is in Figures 1 to 3 shown. The deep-rolling device 1 consists essentially of two arms 6 and 7. These arms 6 and 7 are connected to one another in a known manner via the tabs 23 and the hinge pin 24 in a scissor-like manner. At the opposite rear ends 8 and 9, a piston-cylinder unit 10 is also arranged in a known manner, which moves the arms 6 and 7 like pliers or scissors. At the end 11 opposite the end 8 and at the end 12 opposite the end 9, the roller head required in each case is arranged on an arm 6 or 7 in the prior art. In the deep rolling device according to the invention, however, the hinge pins 25 and 26 are provided there, which carry the fork-shaped levers 19 and 20 in an articulated manner. The levers 19 and 20 can thus swing freely about their hinge pins 25 and 26, as indicated by the arrows 27 and 26 '.

A piston-cylinder unit 21 is connected via a piston rod to the lever 19 via a joint 28, while the cylinder of the piston-cylinder unit 21 is supported on the lever 6. In the switching position shown in FIG. 1, the lever 19 is in the angular position 15. At the second end of the lever 19, known deep-rolling tools 13 and 13 ', designed as a double tool in the exemplary embodiment shown, are arranged. In the angular position 15 of the lever 19, the deep rolling roller head 13 is in the working position.

Arranged opposite the deep rolling roller head 13, in a manner known per se, is a support roller head 14 which is arranged on the lever 20. The angular position 17 of the lever 20 holds the support roller head 14 in the working position, so that the transition radii 2 on the main bearing 3 can be rolled. For this it is necessary that the levers 6 and 7 are moved via the piston-cylinder unit 10 in a manner known per se and thus the deep rolling roller head 13 and the support roller head 14 are brought into contact with the corresponding bearing points of the crankshaft 5. In this way, of course, not only the main bearing 3 of the crankshaft 5, but also the connecting rod bearing 4 can be rolled in the region of the fillets 2. For this purpose, only a corresponding device has to be arranged. However, the multiple arrangement of such devices is known from the literature on the prior art which has already been cited. A detailed description of this multiple arrangement can therefore be dispensed with here. In this regard, reference can be made to the literature cited on the state of the art of technology.

For the machining of the crankshaft 5, this is, as shown in FIG. 2, received between centers and driven centrally.

The machining of the crankshaft can now be carried out in a manner already known in the prior art. If a crankshaft 5 now arrives as the next workpiece with, for example, modified fillet radii, the deep-rolling roller head 13 'can be matched to this. In order then to be able to roll the crank shaft 5 with the changed transition radii 2, the piston-cylinder unit 21 is actuated so that its piston rod retracts. As a result, the lever 19 is moved from the angular position 15 to the angular position 16 hazards. As a result, the deep rolling roller head 13 'comes into the working position and the crankshaft 5 with the changed radii can be rolled. The pivoting movement in the direction of arrow 27 of the lever 19 is of course in no way limited to the two switching positions described in the exemplary embodiment. More than two switching positions can also be provided. Likewise, more than two deep rolling roller heads can be used. But depending on the application of the deep rolling device 1, it may also make sense to provide only a single deep rolling roller head 13, for example if the now possible swiveling movement via the lever 19 is only or preferably to serve to simplify the tool change for the tool 13 or in the case a break of the deep rolling rollers to simplify the changing of the deep rolling rollers by better accessibility. However, the insertion of the workpiece can also be simplified by such a pivoting movement.

The support roller head 14 can also be pivoted in the direction of the arrow 26 ', for example by means of the handle 22 from the angular position 17, which represents the working position, into the angular position 18. For this purpose, only the locking bolt 29 is removed so that the lever 20 can now be pivoted effortlessly via the handle 22. In the angular position 18, the locking bolt 29 is then reinserted and then sits in the bore 30 of the arm 7. In this swivel position, the support roller head 14 can be replaced effortlessly. However, it is also conceivable to design the lever 20 in the embodiment of the lever 19, so that the lever 20 has several different support roller heads for different ones Storage designs can carry.

The structure of a deep rolling device 1 'according to FIG. 3 is very similar to that of the deep rolling device previously described. The arm 7 with the support roller head 14, which is articulated via the lever 20 on the arm 7 via the hinge pin 26, can be constructed exactly as already described for FIG. This lever 7 is in turn articulated by means of the hinge pin 24 and the tab 23 to an arm 6 ', the first ends 8' and 9 of the arms 6 'and 7 being connected to a piston-cylinder unit 10 which the Swivel movement of the arms should cause relative to each other and which generates the necessary rolling force.

The arm 6 'differs in its construction from the arm 6 according to FIG. 1. In the area of the second end 11 'of the arm 6', this has a slide guide 37 on the underside, on which one or more slides 35 can be arranged. The one or more slides 35 are displaceable in the direction of arrow 36. In the exemplary embodiment according to FIG. 3, the carriages 35 carry deep-rolling roller heads 31, 32 and 33. Since several sliding carriages 35 are provided in the exemplary embodiment, the deep-rolling roller heads 31 to 33 are connected to one another via brackets 38. The deep rolling roller head 31 is here in the working position 34, while the deep rolling roller heads 32 and 33 are available for a roller head change.

To carry out a sliding movement of the roller heads 31 to 33 on the slide guide 37, the roller head 33 with its associated slide 35 is over an arm 39 connected to the piston-cylinder unit 21 '. An inward and outward movement of the piston rod of this piston-cylinder unit 21 ′ brings about a corresponding displacement of the slide 35 and thus of the roller heads 31 to 33 in the direction of the arrow 36. In this way, any desired roller head can be brought into the working position 34 or removed from it will. In the respective working position, the roller head located in the working position can be mechanically locked or held in working position 34 via a position control of the piston of the piston-cylinder unit 21 '.

With this type of construction, it is entirely possible to design the respective slide 35 as a fixed component of an assigned roller head. It is also possible to design several roller heads as a unit, so that there is only one roller head as an assembly, but which has several jobs.

Likewise, it is of course also possible to use a roller head arrangement as described for the lever 6 'in the form of support roller heads on the arm 7. The arm 7 then only has to be formed at its second end 12 corresponding to the end 11 'of the arm 6'.

List of the reference symbols used

1

Deep rolling device

1'

Deep rolling device

2nd

Transition radii

3rd

Main camp

4th

Connecting rod bearings

5

crankshaft

6

poor

6 '

poor

7

poor

8th

first end

8th'

first end

9

first end

10th

Piston-cylinder unit

11

second end

11 '

second end

12

second end

13

Deep rolling roller head

13 '

Deep rolling roller head

14

Support roller head

15

Angular position

16

Angular position

17th

Angular position

18th

Angular position

19th

lever

20th

lever

21

Piston-cylinder unit

21 '

Piston-cylinder unit

22

Handle

23

Tab

24th

Hinge pin

25th

Hinge pin

26

Hinge pin

26 '

arrow

27th

arrow

28

joint

29

Locking bolt

30th

drilling

31

Deep rolling roller head

32

Deep rolling roller head

33

Deep rolling roller head

34

Working position

35

carriage

36

arrow

37

Sled guide

38

Tabs

39

poor

40

axis

40 '

Rolling element

41

Carrying device

41 '

Support element

42

Machine stand

43

traverse

44

Adjustment drive

45

Adjustment drive

46

Crankshaft axis

47

carriage

48

Sled carrier

49

Sled guide

50

Vertical guides

51

Swivel arm

52

Fluid cylinder

53

Fluid cylinder

54

first swivel position

55

second swivel position

56

lever

57

Fluid cylinder

58

free end

59

arrow

60

axis

61

Piston rod

62

boom

63

Piston rod

64

Piston rod

65

Piston rod

66

arrow

67

arrow

Claims (26)

1. Deep rolling machine or burnishing machine for rolling of at least the surfaces located eccentrically on a workpiece (5), with the means of work holding, as well as rotary drive of the workpiece (5), as well as with at least one movable roll device (1,1'), each of which incorporates at least one toolholder (6,6') with at least one roll element (40') and one toolholder (7) with at least one support element (41'), whereby each movable roll device (1,1') is also moved by the workpiece (5) and whereby the movable roll devices (1,1') are located displaceably in a radial plane of the workpiece, whereby the movable roll device (1,1') is suspended on a swivel arm (51) swivellable about a shaft (60) parallel to the workpiece axis (46), which itself is suspended in the machine swivellable about a shaft (40) parallel to the said shaft (60) and can be secured in at least one swivel position, characterized in that the movable roll devices (1,1') are located so as to be displaceable in linear fashion in a radial plane of the workpiece, whereby the swivel shaft (40) for the swivel arm (51) is located in a supporting device (41) which itself is supported by a crossmember (43) resting on the machine base (42) and which is connected to the traversing drives (44,45), which permit displacement of the position of this shaft (40) at least in one plane at right angles to the crankshaft axis (46) with at least one horizontal and/or vertical component.
2. Device according to claim 1, characterized in that at least one roll device (1,1') is movably located in a coordinate direction (59) perpendicular to the said radial plane.
3. Device according to one of claims 1 or 2, characterized in that at least one additional roll device is provided, whereby at least this roll device is displaceably located in a radial plane of the crankshaft in such a coordinate direction (67), in which adjustment of the position of the rolling tools to the crankpin diameter (3) of a workpiece range to be machined is possible.
4. Device according to at least one of claims 1 to 3, characterized in that the coordinate directions in which displacement is possible are horizontal (66,59) and vertical (67).
5. Device according to at least one of claims 1 to 4, characterized in that the supporting device (41) comprises a slide (47) traversable at right angles to the crankshaft axis (46), this slide being located in a slide support (48) with slide guideway (49), whereby an effective traversing drive (45) is provided between slide (47) and slide support (48).
6. Device according to at least one of claims 1 to 5, characterized in that the slide support (48) is located by means of vertical guideways (50) so as to be movable vertically along crossmember (43) and is connected to a traversing drive (44) supported on crossmember (43), whilst a further traversing drive (45) is effective between slide (47) and slide support (48).
7. Device according to at least one of claims 1 to 6, characterized in that, for the purpose of securing the swivel arm (51) in a swivel position on the traversable slide (47), two hydraulic cylinders (52,53) acting in opposition on the swivel arm (51) are provided, which swivel the swivel arm (51) to the required position and secure it there.
8. Device at least according to claim 7, characterized in that of the two hydraulic cylinders (52,53), one cylinder (53) determines a first swivel position (54) of the swivel arm with its first end position and a second swivel position (55) with its second end position, whereby at least for the purpose of determining the first swivel position (54), the second cylinder (52) is operated with less force than the first cylinder (53).
9. Device according to at least one of claims 1 to 8, characterized in that on the swivel arm (51) a swivel-mounted lever (56) is provided, which is actuatable by a hydraulic cylinder (57) also located on the swivel arm (51), the free end (58) of which cylinder can be pressed against the appropriate roll device (1,1') in order to move the latter to a particular swivel position (Figure 4).
10. Device according to at least one of claims 1 to 9, characterized in that the crossmember (43) is displaceably (59) retained on the machine base (42).
11. Device according to at least one of claims 1 to 10, characterized in that on at least one toolholder (6,6',7) at least one further roll element (40') is displaceable in at least two positions, of which at least one position is a working position, whereby at least the roll element in working position and/or at least one appropriate support element is kinematically connectable or connected to a means of power operation.
12. Device according to claim 11, characertized in that at least one roll element (40') and/or support element (41') is displaceably located on the toolholder (6,6',7).
13. Device at least according to claim 11, characterized in that each roll element (40') and each support element (41') is an element of a roller head (13,13'; 31-33; 14).
14. Device at least according to claim 13, characterized in that an independent roller head is provided for each roll element (40') and/or for each support element (41') or pair of support elements or pair of roll elements.
15. Device at least according to one of claims 1 to 14, characterized in that each roller head (13,13'; 31-33; 14) is displaceably located on the appropriate toolholder (6,6',7).
16. Device according to claim 1, characterized in that on at least one toolholder (6,7), a toolhead (19,20)is provided which is displaceable to at least two specified or specifiable positions (15-18) with at least one roll element (40) or support element (41, which is movable to the positions stated by means of the toolhead (19,20), whereby at least one roll element and/or at least one appropriate means of support in working position is kinematically connected or connect-able to a means of power operation.
17. Device according to at least claim 16, characterized in that the toolhead (19,29) takes the form of a roller head for the roll element (40') and/or the support element (41')
18. Device at least according to claim 16, characterized in that at least one toolhead (19,20) bears at least one roller head (13,13',14).
19. Device according to at least one of claims 1 to 18, characterized in that at least two roller heads are displaceably located in at least two positions, at least one position of which is the working position (34).
20. Device at least according to claim 19, characterized in that, for the purpose of displacement, the roller heads (31-33) are located on a guide.
21. Device at least according to claim 19 or 20, characterized in that an operating device (21') is provided for the purpose of displacement.
22. Device at least according to claim 21, characterized in that a hydraulically operated piston and cylinder unit is provided as operating device (21,21').
23. Device at least according to claim 17, characterized in that at least one more position is provided or is specifiable for the toolhead (19,20) than it has roller heads.
24. Device according to at least one of claims 1 to 23, characterized in that the movable roll device consists essentially of two arms connected flexibly to one another in scissor fashion, which are connected kinematically to a means of power operation, for generation of the rolling force.
25. Device according to at least one of claims 1 to 24, characterized in that a roll device (1,1') is provided, with at least one roll element and/or support element, which is located in each case in fixed position in relation to the appropriate toolholder.
26. Device according to at least one of claims 1 to 25, characterized in that the rotary drive of the workpiece is rotation angle-controlled, whereby the position of angular rotation of the workpiece and the position of at least one movable roll device in radial plane are controllable mutually dependent upon one another.

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