EP1221355A2 - Burnishing machine for crankshafts - Google Patents

Abstract

The deep rolling machine for crankshafts with deep rolling tools (2), each having a deep rolling roller head (1) and a support roller head, each of which is releasably attached to the ends (17) of associated scissor arms (3) with two clamping stones (15), a first one in each case the two clamping stones (15) on the end face (16) of the end (17) of the scissor arm (3) and the second clamping stone at a right angle to the first (15) on the tool-side surface (16) of the same scissor arm (3), is characterized in that the first clamping stones (15) on the end face (16) at the end (17) of the respective scissor arm (3) are slidably mounted in the direction of the respective deep rolling tool (2), the deep rolling roller head (1) instead of the second clamping stone is movably mounted on the scissor arm (3) by having guide grooves on its end faces facing the scissor arm (3), in which prismatic stones of the scissor arm (3) engage and the second clamping block for the support roller head is elastically movably mounted on the scissor arm in the clamping direction. <IMAGE>

Description

The invention relates to a deep rolling machine for Crankshafts with deep rolling tools, each one Having a deep rolling roller head and a support roller head, which each have two clamps at the ends of associated scissor arms are releasably attached, wherein a first of the two clamps on each End face of the end of the scissor arm and the second Clamp stone at a right angle to the first on the side surface of the same scissor arm on the tool side is arranged.

A deep rolling machine for crankshafts of this type is known for example from EP 0 881 041 A2 thereof Applicant. In particular in FIGS. 2a, 2b, 2c and 3 This European patent application is the attachment of deep rolling tools. A single one Deep rolling tool consists of a deep rolling head, in of the European patent application with the reference number 66 designated and a support roller head, in the application designated by the reference numeral 74. A that Deep rolling tool 66 and Support roller head 74 are at ends 65 and 73, respectively attached by associated scissor arms 46 and 47. about the details of the attachment is in the registration nothing said, the above figures show however, clamps with the help of deep rolling head 66 and support roller head 74 from two sides on one Scissor arm 46 and 47 are fastened by screws. It are detachable fastenings that over the Screw connections are realized because both the Deep rolling head 66 as well as the support roller head 74 from case need to be replaced on a case by case basis. To replace the Deep rolling tool must the screw connections of the relevant clamps are solved before the Deep rolling roller head or the support roller head removed can be. When clamping the deep rolling tools the screw connections must be reattached every time become.

The loosening and reattaching of the screw connections is time consuming, apart from the not always easy Accessibility of the deep rolling tools in the Hard-rolling machine. Changing the familiar Deep rolling tools accordingly extend the Setup times of the deep rolling machine.

The problem arises from the aforementioned disadvantages of the present invention, the setup times of Deep rolling machine to reduce significantly. at the same time should the deep rolling tools in a way on the Deep rolling machine to be fixed that it is possible to measure the deep rolling force and the condition of the To determine deep rolling rolls.

• die ersten Klemmsteine auf der Stirnfläche am Ende des jeweiligen Scherenarmes in Richtung auf das jeweilige Festwalzwerkzeug verschiebbar gelagert sind,
• der Festwalzrollenkopf anstelle des zweiten Klemmsteins am Scherenarm beweglich gelagert ist, indem er auf seinen dem Scherenarm zugewandten Stirnflächen Führungsnuten aufweist, worin prismatische Steine des Scherenarmes eingreifen und der
• zweite Klemmstein für den Stützrollenkopf in der Klemmrichtung elastisch beweglich am Scherenarm gelagert ist.

To solve the problem it is provided that

• the first clamping stones are mounted displaceably on the end face at the end of the respective scissor arm in the direction of the respective deep rolling tool,
• the deep rolling roller head is movably mounted on the scissor arm instead of the second clamping block by having guide grooves on its end faces facing the scissor arm, in which prismatic stones of the scissor arm engage and the
• second clamp for the support roller head is elastically movable in the clamping direction on the scissor arm.

This type of movable attachment of the Deep rolling tools on the deep rolling machine offers one whole range of advantages. By inserting grooves on the end faces of the scissor arms Deep rolling roller head and support roller head can do this two deep rolling tools in the deep rolling machine be movably stored. You can also turn on can be easily clamped in and out by the Clamping stones with which the deep rolling tools each on End of the scissor arm in question are attached Directionally mounted on the deep rolling tool are. The first clamp is used for the support roller head for example by means of an eccentric lever in and out Brought into engagement and at the deep rolling head first clamp with the help of a compression spring automatically held in the locked position. From that he can then with the help of a simple hand tool be moved out so that the deep rolling roller head from the Machine can be unclamped.

In addition to the simplified clamping and unclamping of the Deep rolling tools in the deep rolling machine allows the movable storage of the deep rolling tools within the The determination of forces and Conditions necessary for the proper operation of the Deep rolling machine are important. That's the way it is for example, the deep rolling roller head on the with the deep rolling rollers opposite the end face to bring piezoelectric transducers into contact with whose help precisely measures the respective deep rolling force can be. It is then based on these measurements possible to regulate the deep rolling force so that the Crankshaft stays straight during deep rolling and afterwards has no blow. With the help of another sensor, into one of the end faces of the deep rolling roller head intervenes, it is even possible to change the state of the To determine deep rolling rolls. Here you make the Take advantage of the fact that the leadership role within the Deep rolling roller head used to guide the deep rolling rollers serves, when worn or broken irregularly round running. Over projections or recesses on the edge of the Guide roller can be used in conjunction with the sensor, which as Proximity switch is trained, the regularity of the Concentricity of the guide roller are recorded. Irregularities here indicate wear or Break of the deep rolling rollers.

To avoid confusion of deep rolling tools index bolts for different crankshafts provided by the deep rolling head respectively from the support roller head engage in holes that are in the adjacent end faces of the scissor arms are. Indexing ensures that only that for the respective crankshaft type intended deep rolling tool in the deep rolling machine can be installed.

The movable bearing of the support roller head has the Advantage that the support rollers with large Fit the crankshaft bearings evenly can, which are each rolled.

Finally, a tool changer is provided one after the other both on the deep rolling roller head and on Support roller head can be attached to each Deep rolling tool without effort and risk for the To change machine setter. To insert the Tool changing pliers are protrusions on the accessible end faces of deep rolling roller head and Support roller head provided on which the Tool changer can tackle.

Further advantages of the invention are in the Embodiments of subclaims 2 to 18 can be seen.

Fig. 1 und 2

das Einspannen eines Festwalzrollenkopfes,

Fig. 3 und 4

das Ausspannen eines Festwalzrollenkopfes,

Fig. 5

einen in der Festwalzmaschine eingespannten und verriegelten Stützrollenkopf,

Fig. 6

das Entriegeln des Stützrollenkopfes und

Fig. 7

das Ausspannen eines entriegelten Stützrollenkopfes aus der Festwalzmaschine.

The invention is described in more detail below using an exemplary embodiment. It shows, in each case on a smaller scale in the side view,

1 and 2

the clamping of a deep rolling roller head,

3 and 4

unclamping a deep rolling roller head,

Fig. 5

a support roller head clamped and locked in the deep rolling machine,

Fig. 6

unlocking the support roller head and

Fig. 7

unclamping an unlocked support roller head from the deep rolling machine.

A deep rolling roller head 1, the deep rolling rollers 2 for rolling a crankshaft (not shown) is in the Scissor arms 3 of a deep rolling machine known per se clamped. For this purpose, the deep rolling roller head 1 of Tool changer 4 captured and in the scissor arm 3 introduced. The tool changer 4 has two pliers-like grippers 5, each about pivot points 6 are pivotable. The spreading of the grippers 5 and that Closing takes place via a guide rod 7, which in the Longitudinal axis 8 of the tool changer 4 is displaceable is arranged. Moving the guide rod 7 takes place via a sleeve 9 in the direction of the longitudinal axis 8 can be pushed back and forth by hand. to Transmission of the axial movement of the guide rod 7 the gripper 5 joints 10 are provided, which the Axial movement of the guide rod 7 in spreading or Convert the closing movements of the grippers 5. For example when moving the sleeve 9 towards the Deep rolling roller head 1, the grippers 5 are spread. At the Moving the guide rod 7 under the action of a Return spring 64 will be in the opposite direction the grippers 5 are closed and grip behind one Button 11, which protrudes from the deep rolling roller head 1 and is firmly connected to it.

In Fig. 1, the deep rolling head 1 from below in introduced the scissor arm 3 and by a Swivel movement upwards in the direction of arrow 12 the scissor arm 3 connected. First, it overcomes the upper edge 13 of the deep rolling roller head 1 the down protruding nose 14 of a first clamping block 15. The first Terminal block 15 is on the end face 16 at the end 17 of the Scissor arm 3 in the direction of the deep rolling roller head 1 slidably mounted. The first clamp 15 is from a spring 18 constantly in its locked position held. By moving up in direction 12 the resistance of the spring 18 is overcome and the upper one Edge 13 of the deep rolling roller head 1 disappears behind the nose 14 of the first clamping block 15, as in the Fig. 2 can be seen. In this closed position can then the tool changer 4 from Deep rolling roller head 1 released by spreading the grippers 5 become.

On the scissor arm 3 facing end face 19 of the Deep rolling roller head 1 is a longitudinal groove 20 as Guide groove inserted (Fig. 2). In the longitudinal groove 20 grab prism stones 21 from end 17 of scissor arm 3 off and ensure the guidance of the deep rolling head in the x and y directions. Another tour of the both guide directions x and y is done by one Sliding block 22, which from the recessed end face 23rd of the scissor arm 3 protrudes and into a groove 24 of the Deep rolling roller head 1 engages. In the groove 24 Deep rolling roller head 1 from the sliding block 22 also in the z direction, which is normal to Viewing plane of Figures 1 to 4 extends.

When inserting the deep rolling roller head 1 in the 1, indexing pins 25 grip, from the rear face 26 of the Jump out of deep rolling roller head 1, in holes 27 one in the end face 23 of the scissor arm 3 are let in. By indexing the bolts 25 and holes 27 ensures that only each that match a specific crankshaft type Deep rolling roller heads 1 inserted into the deep rolling machine can be. A second bore 28 adjacent to the bore 27 indicates the possibility of indexing.

The tool changing pliers 4 also have a rocker arm 29 on at a point 30 on the tool changing tongs 4 is pivotally mounted. By depressing the back The end 31 of the rocker arm 29 becomes its front end 32 spread away from the tool changer 4 (Fig. 3). The front end 32 meets the nose 14 of the first clamp stone 15 and moves it upwards. In order to the upper edge 13 of the deep rolling roller head 1 is free and this can go down in the direction of arrow 12 swung away and stretched out of the deep rolling machine be (Fig. 3 and 4).

From the end 17 of the scissor arm 3 towards the Deep rolling roller head 1 grab two piezoelectric transducer 33 in recesses 34, the on the upper end face 35 along the longitudinal groove 20 in the deep rolling roller head 1 are embedded. Like from the Figures 2 and 3 recognizable, the two stand piezoelectric transducer 33 via the recesses 34 each in close contact with the deep rolling roller head 1. Between the bottom of the longitudinal groove 20 and the sliding blocks 21 there is a limited game 36, and a The same game also exists between the groove 24 and the sliding block 22. As a result of game 36 the Deep rolling roller head 1 in the vertical direction x limited mobility. However, this flexibility is enough out to the deep rolling forces on the deep rolling rollers 2 the housing 37 of the deep rolling roller head 1 on the to transmit piezoelectric transducer 33.

A further pick-up 38 jumps out of the end face 23 out of the scissor arm 3 and penetrates into a recess 39 of the housing 37 of the deep rolling roller head 1. at the transducer 38 is one Proximity switch. To operate it are about one Distributed scope of the guide roller 40, which the Deep rolling rollers 2 are supported in the deep rolling roller head 1, Protrusions 41 provided during the circulation of the Guide roller 40 are moved past the pickup 38. As can be seen in FIGS. 1 to 4, the projections 41 at regular circumferential intervals on the guide roller 40 intended. As a result of wear and tear respectively a possible breakage of deep rolling rollers 2 is the Circulation of the guide roller 40 irregular. This Irregularity is detected by the sensor 38 and as a fault to the machine control system Deep rolling machine reported.

The tool changer 4 is designed so that it also serve to replace a support roller head 42 can (Fig. 5 to 7). The tool changing pliers reach for this 4 in turn on a button 11 on the housing 43 of the Support roller head 42 is provided. The button 11 am Support roller head 42 is constructed in exactly the same way as the button 11 on the deep rolling roller head 1. With broken lines the two support rollers 44 are indicated, which a crankshaft (not shown) on one Support main bearing journal 45. There are two each Support rollers 44 are provided, which the crankshaft support against the deep rolling force 46.

On the scissor arm 47, the housing 43 of the Support roller head 42 with the aid of two clamping stones 48 and 49 held. While the first clamp 48 on the front end 50 of the scissor arm 47 slidably is arranged, the second clamping block 49 on the Scissor arm 47 elastically attached via springs 51.

The first clamping block 48 is actuated by Turning a rocker arm 52. The rocker arm 52 is open an axis 53 rotatably mounted and has one Eccentric contour 54 through which the Locked position - Fig. 5 - and the Unlocking position - Fig. 6 and Fig. 7 - defined become. The first clamping block 48 is unlocked by moving the rocker arm 52 into that in FIG. 6 shown position, whereupon the release of the Support roller head 42 by moving the Rocker arm 52 in the direction 55 is done by hand. The 6 unlocked support roller head 42 can then by pivoting the tool changer 4 in the Direction 56 upwards, as shown in FIG. 7, from the Deep rolling machine can be unclamped. When swiveling of the support roller head 42 in the direction 56 is the second clamp 49 by compressing the Spring packs 51 raised elastically.

Index bolts 57 also provide support roller heads 42, which engage in bores 58 of the scissor arm 47, for an indexing of the support roller head 42 within the deep rolling machine. The support roller head 42 is also open the scissor arm 47 floating. This is on its bottom 59 facing scissor arm 47 a Longitudinal groove 60 embedded, one of which from the scissor arm 47 projecting slot nut 61 engages. A comparable guidance is on the adjacent face 62 realized where a second sliding block 63 from the Scissor arm 47 projecting into the housing 43 of the Support roller head 42 engages. Clamping one Support roller head 42 in the deep rolling machine takes place in reverse order to that in FIGS. 5 to 7 selected and described representations.

reference numeral

1

Rolling roller head

2

Fixed rollers

3

Scherenarm

4

Tool change tongs

5

Forceps-type gripper

6

pivot point

7

guide rod

8th

longitudinal axis

9

sleeve

10

joint

11

stud

12

pivotal movement

13

upper edge

14

nose

15

first clamp

16

face

17

End of the scissor arm

18

feather

19

front

20

longitudinal groove

21

sliding block

22

sliding block

23

face

24

groove

25

Index bolts

26

face

27

drilling

28

drilling

29

rocker arm

30

pivot point

31

rear end

32

front end

33

piezoelectric transducer

34

recess

35

upper face

36

game

37

casing

38

pickup

39

recess

40

leadership

41

head Start

42

Support roller head

43

casing

44

supporting role

45

Main bearing journal

46

Rolling force

47

Scherenarm

48

first clamp

49

Klemmstein

50

front face

51

feathers

52

rocker arm

53

axis

54

Excenterkontur

55

Direction x, y, z guide directions

56

directions

57

Index bolts

58

drilling

59

bottom

60

longitudinal groove

61

sliding block

62

front

63

sliding block

64

return spring

Claims (18)

Deep rolling machine for crankshafts with deep rolling tools, each having a deep rolling roller head and a support roller head, each of which is releasably attached to the ends of associated scissor arms with two clamping stones, with a first of the two clamping stones on the end face of the end of the scissor arm and the second clamping stone under one is arranged at right angles to the first on the tool-side surface of the same scissor arm, characterized in that the first clamping stones (14, 48) on the end face (16, 50) at the end of the respective scissor arm (3, 47) are slidably mounted in the direction of the respective deep rolling tool (1, 42), the deep-rolling roller head (1) is movably mounted on the scissor arm (3) instead of the second clamping block by having guide grooves (20, 24) on its end faces (19, 26) facing the scissor arm (3), in which prismatic stones (21, 22) engage the scissor arm (3) and the second clamping block (49) for the support roller head (42) is mounted on its scissor arm (47) so as to be elastically movable in the clamping direction. Deep-rolling machine according to claim 1, characterized in that the guide grooves (20, 24) on the deep-rolling roller head (1) are provided on the two end faces (19, 26) of the deep-rolling roller head (1) facing the scissor arm (3), which enclose an angle with one another, wherein the guide groove on the end face (19) of the deep-rolling roller head (1) opposite the deep-rolling rollers (2) is designed as a longitudinal groove (20). Deep-rolling machine according to claim 2, characterized in that a second groove (24) is provided approximately in the longitudinal center of the associated end face (26) of the deep-rolling head (1). Deep-rolling machine according to one of claims 1 to 3, characterized in that a rocker arm (52) for moving the first clamping block (48) into or out of the locking position is provided at the end of the first clamping block (48) for the support roller head (42). Deep-rolling machine according to one of claims 1 to 3, characterized in that the first clamping block (15) for the deep-rolling roller head (1) can be brought automatically into the locking position by means of a spring (18). Deep-rolling machine according to claim 5, characterized in that an organ can be attached to the deep-rolling roller head (1) which has a rocker arm (29), by means of which the first clamping block (15) can be unlocked by hand. Deep rolling machine according to claim 6, characterized in that the member is a tool changing pliers (4). Deep-rolling machine according to claim 7, characterized in that the tool changing pliers (4) can be attached alternately to the deep-rolling roller head (1) or to the support roller head (42). Deep-rolling machine according to claim 1, characterized in that the support roller head (42) is movably mounted on the scissor arm (47). Deep-rolling machine according to claim 9, characterized in that the support roller head (42) has guide grooves (60) on its end faces (59, 62) facing the scissor arm (47), in which prismatic stones (61, 63) of the scissor arm (47) engage. Deep-rolling machine according to claims 9 and 10, characterized in that the guide grooves (60) on the support roller head (42) are provided on the two end faces (59, 62) of the support roller head (42) facing the scissor arm (47) which enclose an angle with one another , The guide groove on the end face (59) of the support roller head (42) opposite the support rollers (44) being designed as a longitudinal groove (60). Deep-rolling machine according to claim 11, characterized in that a second groove is provided approximately in the longitudinal center of the associated end face (62) of the support roller head (42). Deep-rolling machine according to claim 1, characterized in that index bolts (25, 57) are provided on the deep-rolling roller head (1) and / or on the support roller head (42) of the deep-rolling tool for engagement in associated index bores (27, 28, 58) in the scissor arm (3, 47) are. Deep-rolling machine according to claim 1, characterized in that at least on the scissor arm (3) carrying the deep-rolling roller head (1) there are pressure measuring devices (33) for measuring the deep-rolling force (46), which after clamping the deep-rolling roller head (1) with at least one of them Face surfaces (19, 26) are in contact, which face the scissor arm (3). Deep-rolling machine according to claim 14, characterized in that the pressure measuring devices are piezoelectric sensors (33) which engage in a recess (34) in the associated end face (19) of the deep-rolling roller head (1). Deep-rolling machine according to one of claims 14 and 15, characterized in that the pressure measuring devices (33) are provided on the end face (19) of the deep-rolling roller head (1) opposite the deep-rolling rollers (2). Deep-rolling machine according to Claim 1, characterized in that sensors (38) for determining the wear or breakage of deep-rolling rollers (2) are provided at least on the deep-rolling roller head (1). Deep rolling machine according to claim 17, characterized in that the sensor for determining the state of the deep rolling rollers (2) is designed as a proximity switch (38) which projects from an end face (23) of the scissor arm (3) and into a recess (39) of the associated one The end face (23) of the deep rolling roller head (1) engages and is operatively connected to projections (41) which are provided on the guide roller (40) with which the deep rolling rollers (2) are guided in the deep rolling roller head (1).

Images