EP0188613A1

EP0188613A1 - Oscillating arm system

Info

Publication number: EP0188613A1
Application number: EP19850904105
Authority: EP
Inventors: Klaus Walter
Original assignee: Individual
Current assignee: Individual
Priority date: 1984-08-07
Filing date: 1985-08-07
Publication date: 1986-07-30
Also published as: WO1986001267A1

Abstract

Un système à bras oscillants comprend au moins deux bras oscillants (6, 10; 51, 52) orientables au moins sur un plan situé au-dessus d'une articulation (1, 50) agencée entre les deux et susceptibles d'être bloqués au-dessus d'un dispositif d'arrêt (20, 90). Afin d'obtenir un blocage complètement rigide dans pratiquement n'importe quel angle et agencement, il est prévu de former le dispositif d'arrêt (20, 90) entre les deux bras oscillants (6, 10; 51, 52) comme une fermeture géométrique déverrouillable et de pourvoir une des deux moitiés de l'articulation (9a, 9b; 58, 59) d'une pluralité de subdivisions de précision coopérant avec la fermeture géométrique afin de former une pluralité d'angles d'orientation entre les deux bras oscillants (6, 10; 51, 52).A swinging arm system comprises at least two swinging arms (6, 10; 51, 52) orientable at least on a plane situated above a joint (1, 50) arranged between the two and capable of being blocked at the - above a stop device (20, 90). In order to obtain a completely rigid blocking in practically any angle and arrangement, provision is made to form the stop device (20, 90) between the two swinging arms (6, 10; 51, 52) as a closure unlockable geometry and to provide one of the two halves of the articulation (9a, 9b; 58, 59) with a plurality of precision subdivisions cooperating with the geometrical closure in order to form a plurality of orientation angles between the two arms oscillating (6, 10; 51, 52).

Description

Swivel arm system

The invention relates to a swivel arm system according to the preamble of claim 1.

Basically, of course, joints for pivoting two pivot arms relative to one another are known, for example in the case of a desk lamp, the respectively set angle between the two pivot arms being able to be set by means of a locking screw. Pivot arms in such example _^ tiltable in a plane encryption but are used only frictional locking devices according to the prior art, the with correspondingly large forces can nevertheless not guarantee a secure hold of the two pivot arms set to one another.

Especially in the craft and construction sector, the problem frequently arises that certain workpieces to be machined should be held in a certain position. Thus it is known in principle to clamp workpieces to be machined in a processing machine, for example on a vice, but systems are not known in order to hold a workpiece to be machined in a relatively freely adjustable angular position in order to then be able to carry out the desired machining.

It is therefore an object of the present invention to provide a swivel arm system which serves in particular as a basic component for a swivel arm system for holding and adjusting any parts and workpieces, and which ensures that a swivel angle once set is below

Can not adjust the influence of force. The object is achieved according to the invention in accordance with the features specified in the characterizing part of claim 1. Advantageous embodiments of the invention are specified in the subclaims.

The present invention achieves an entirely surprising success, since with the swivel arm system according to the invention a corresponding joint is set at any discrete angles and is securely adjusted to one another by the positive locking device can be . An automatic adjustment is also ruled out, even with large attaching forces.

In a particularly preferred embodiment according to claims 2 to 8 ^• while a ball joint is used, which enables the greatest possible degree of freedom for setting unterschiedlichster displacement. As a simple embodiment, a fixed adjustment can be realized according to claim 3 by a system of projections and depressions which are provided on the ball cage or on the ball, and in the adjusted state interlock firmly and non-detachably.

In a further development according to claim 4, the system can be used by using a tension slot

Clamping device are fixed, whereby the projections engage securely in the corresponding recesses, so that an angle which has been set cannot be adjusted automatically even under great forces.

In an embodiment according to claims 9sequence, a joint consisting of two disks and rotatable about a transverse axis is used for the swivel arm systems, the disks also being fixedly adjustable again in a plurality of discrete angles.

In the case of both the ball and the disc joint, springs are provided which are favorable and which release the projections from the recesses when the associated locking device is released. Press out the other part's parts automatically.

In order to be able to assemble several joints to form entire joint chains, one arm of two joints can be plugged into one another and telescopically inserted and removed from one another. When disc joints are used, the articulated arms which are inserted one into the other can still be rotated relative to one another, even in the discrete, firmly adjustable, form-fitting connection.

Further advantages, details and features of the invention result below from the exemplary embodiments illustrated with the aid of drawings. Show in detail

Fig. 1: a schematic side view of an articulated arm system according to the invention;

Fig. 2: a schematic representation of a section of the articulated arm system according to FIG. 1 ;

Fig. 3: a cross-sectional representation through a locking ^device according to FIG. 2 along the line III-III;

4: a further exemplary embodiment of the articulated arm system according to the invention using ball joints;

Fig. 5: a schematic top view of a joint cage according to the embodiment of FIG. 4; Fig. 6: a perspective view of the joint cage according to FIG. 5;

Fig. 7 and 8: a side and polar front view of the joint ball according to Fig. 4th

In the following, FIG. 1 to 3, in which two swivel arm systems are attached to a vertical support rod 11 in order to adjust any one in FIG. 1 to hold the workpiece or part provided with reference number 13 in any desired position.

The arrangement according to the Fig. 1 to 3 consists of a joint 1 which can be pivoted in one plane about a transverse axis 3 and consists of two round, flat disks 9a and 9b which a toothing 2 can be fixed by means of a joint and fixing device 20. For this purpose, the two inner sides of the disks 9 are provided with a toothing 2 extending radially from the transverse axis 3. The joint and locking device 20 consists of a

Cross axis 3 forming bolt, which is supported on the outside of the one disc and can be clamped on the opposite outside of the second disc by means of a turning handle 4, so that the two discs 9a and 9b are pressed firmly against one another. Through this

A positive engagement is held once an angle is completely fixed and rigidly fixed. In order to be able to set a new angle more easily, a compression spring 5 is also provided on the inside between the two disks 9a and 9b, via which the two disks 9a and 9b are automatically removed when the rotary handle 4 is released. pressed together to make it easier to set a new angle.

As can be seen from the drawings, each disc is designed with a swivel arm 6 or 10. The respective swivel arm 6 acts as an outer guide tube into which a swivel arm 10 of a next joint 1, provided with longitudinal teeth 19, can be inserted and firmly adjusted.

To firmly anchor two nested swivel arms 6 and 10, a further locking device is provided on the swivel arm 6 serving as an outer guide tube, this locking device 25 being a

Screw 7 comprises the tee at the screw tip a Profil¬ having 8 easily attached rotatably which eindreh with a corresponding desired angular adjustment of the two nested pivot arms 6 and 10 in the groove of said longitudinal teeth 19 ^'- or. can be introduced. A desired relative angle between the two swivel arms 6 and 10 can thus be set once.

In order to reliably prevent two nested swivel arms 6 and 10 from being pushed apart or into one another in an adjusted position, several further recesses or bores 27 are provided, for example, in each groove of the longitudinal toothing 19, into which a pin 29 at the tip of the profile piece 8 engages. The

Bores 27 are, for example, at a very close distance introduced in each groove of the longitudinal toothing 19. With appropriate adjustment, it is thus also possible to reliably prevent two pivoting arms from being pushed apart or into one another. In Fig. 3, only one recess 27 is shown.

For the sake of completeness, it should also be mentioned that an extension 16 for supporting the locking device 25 with the transverse locking screw 7 is provided on the respective outer guide tube.

By means of the above-described swivel arm system, any long chains of several joints can be plugged into one another via the swivel arms 6 and 10 and can be set firmly and non-rotatably at the desired angle. The attachment can be carried out on the vertical support rod 11 mentioned, for which purpose, for example for the first joint 1, a disc 9a with a receptacle 31 and a locking screw 33 is used to push the vertical support rod 11 ^" through.

The workpiece 13 is then held in the desired angular and vertical position by means of screw clamps 12 attached to the last locking arm.

In the following, FIG. 4 to 8, in which a modification of the exemplary embodiment is shown to the extent that instead of the joint 1 consisting of two letters, a ball joint 50 is used which essentially consists of a joint cage 58 in which the joint ball 59 is pivotably seated. Ge guiding cage and the joint ball can be as the joint 1 from ^¬ liebigem suitable material, eg. B. metal, plastic or similar exist. The joint cage 58 tapers to its swivel arm 51, on which a plurality of holes 79 are introduced at least in the longitudinal direction at a discretely regular distance, so that a next swivel arm 52 of a next joint 50 can be inserted and through

Cross bolt 78 can be securely secured. Of course, further safety devices can also be provided on the outside of the cross bolt, so that the cross bolt 78 cannot fall out of the holes 79 without external influence.

Here, too, a locking device 90 is provided, which again consists of interlocking projections and depressions. For this purpose, three or more projections 62, for example in the form of round mandrels, balls or any other shape, are provided on the inside 60 in the region of the opening edge 61 for inserting the joint ball 59, which at regular intervals, for example in the case of four projections 62 -Degree distance in the area of the opening edge 61 are provided on the inside. The locking device 90 further comprises a clamping slot 67 running vertically away from the opening edge 61 with laterally vertically projecting clamping flanges 69 and 70, via which via a clamping eccentric 71 (or a clamping screw) via one on the opposite clamping flange

70 attached clamping bolt 72 the two clamping flanges 69 and 70 towards each other and thus the outer circumference of the joint cage 58 is reduced.

In order to ensure firm anchoring, a large number of depressions 74, in the example of round holes 74, are provided on the joint ball 59, into which the two engage for example projections 62 formed from round mandrels in the adjusted state.

A spring in the form of a spacer spring 64 is provided on the inside 60 in the region of the opening edge 61 and is biased outwards. When the eccentric 71 is opened, the joint cage 58 is thereby opened to the outside in order to carry out a de-adjustment and to be able to set a desired new angle more easily. For this purpose, the spacer spring also has longitudinal guide slots 65, which engage behind it on the projections or round mandrels 62 in guide grooves 66. With 68 webs of the ball cage 58 are designated. A slide ring 73 is also provided on the inside in the joint cage.

It has proven to be particularly advantageous to provide the holes 74, except for the pole 81, in an area B on both sides of the equator, namely on degrees 75 at a regularly small angular distance, for example from

18 °. Of course, the degrees 75 can also be arranged at a different angular distance. The distance on this longitudinal degree between the individual recess holes is also the same.

Although in this embodiment the pivot arms 51 and 52 are designed differently, pivot arms according to the exemplary embodiment according to FIG. 1 can be used, although, when using ball joints, a relative rotation of the pivoting arms 51 and 52 which are respectively inserted into one another is not absolutely necessary. In this embodiment, the respective first joint 50 can be provided with a pivot arm 52 which has a receptacle 31 with an adjusting screw 33 for attachment to a vertical support rod 11. Here, too, the support rod 11 itself can again be firmly adjusted via clamps at another starting point.

At the end of the swivel arm system, a screw clamp 56 is again provided in order to clamp a workpiece, here provided with reference number 80, in any position.

The swivel arm system explained above is particularly suitable for all craft areas where a single person wants to clamp certain workpieces or other parts in a desired specific angular position in order to then be able to carry out machining. This pivoting system is also equally suitable for automatic production lines and robot systems, specifically for those cases where rigidly fixed fixing of pivoting arms should be possible in certain working steps. The end and locking process can of course be done electrically, hydraulically or pneumatically. However, it is important in any case that a set angle or a set bearing does not lead to an involuntary swiveling of the swiveling system even when the forces are high.

7 and 8, guide grooves 77 are also introduced into the surface of the joint ball 59, via which the depressions 74 are connected to a greater depth. This makes it easier to adjust the angle. In addition, the above-mentioned projections may consist of knobs, balls, etc., which taper slightly conically.

Claims

Swivel arm system

1. Swivel arm system with at least two swivel arms (6, 10; 51, 52) which can be adjusted at least in one plane via an articulated joint (1, 50) and clamped by means of a locking device (20; 90), characterized in that in order to achieve a rigid fixation between the two swivel arms (6, 10; 51, 52), even when large forces are applied, the locking device (20; 90) is designed as an unlockable form-fit fixation, and that on one of the two joint halves (9a, 9b; 58, 59) a large number of fine subdivisions cooperating with the interlocking fixation are provided for setting a large number of pivoting angles between the two pivoting arms (6, 10; 51, 52).

2. Swivel arm system according to claim 1, characterized gekenn¬ characterized in that the subdivisions for the form-locking fixation consists of a plurality of recesses (19; 74) and engaging projections (19; 62).

3. Swivel arm system according to claim 2, characterized gekenn¬ characterized in that the joint is designed as a joint ball (59) and a joint cage (58) comprising ball joint (50), and that on the inside (60) of the

Joint cage (58), preferably at its edge region (61) receiving the joint ball (59), at least one, preferably two or more projections / depressions (62, 74) are provided, each with one of several corresponding depressions / projections ( 74, 62) interact on the joint ball (59).

4. Swivel arm system according to one of claims 1 to 3, characterized in that the fixing device further comprises a substantially transversely to the opening edge (61) of the Ge cage (58) extending clamping slot (67) in the region of the edge region (61) of one of the clamping slot (67) and thus the diameter of the joint cage (58) in the region of the opening edge (61) can be pressed together by a locking device.

5. Swivel arm system according to claims 1 to 4, characterized in that the locking device (90) consists of a clamping eccentric (71) which is supported between laterally on the clamping slot (67) angularly projecting clamping flanges (69, 70).

6. Swivel arm system according to one of claims 1 to 5, characterized in that on the inside (60) of the edge region (61) an anti-locking device (90) acting band spring (64) is provided.

7. Swivel arm system according to one of claims 1 to 6, characterized in that on the joint ball (59) with the exception of the transition region, the swivel arm (51) and the opposite pole to the swivel arm

(81) in a region (B) transverse to the equator, a plurality of depressions (74) cooperating with the projections (62) provided on the joint cage (58) are provided.

8. Swivel arm system according to claim 7, characterized gekenn¬ characterized in that the recesses (74) each at a fixed angle, preferably 18 ° offset to each other arranged degrees of longitude (75) at a fixed distance in the direction of the degrees of length (75) to each other are arranged.

9. Swivel arm system according to claim 1, 2 characterized gekenn¬ characterized in that the joint consists of two adjacent disks (9a, 9b), and that at least one of the contact surfaces of the two disks (9a, 9b) with radiated from the pivot axis from len Interlocking teeth (2) with regular angular distances hen, into which at least one projection (2) engages on the other contact surface of the second disk (9a, 9b), and that on the pivot axis (3) a locking device (20) compressible between the two disks (9a, 9b). is seen.

10. Swivel arm system according to claim 1 or 9, characterized in that an outwardly pressing compression spring (5) is installed in the interior between the two disks (9a, 9b).

11. Swivel arm system according to one of claims 1 to 10, characterized in that several disks and / or ball joints (1, 50) on the associated swivel arms (6, 10; 51, 52) are assembled to form a common chain, with between two interlocking swivel arms (6, 10; 51, 52) each have a locking device (25; 78, 79) against axial displacement and rotation. the longitudinal axis in the form of a locking pin or pin which can be inserted into a recess or bore (27; 79)

(29; 78) is provided.

12. Swivel arm system according to one of claims 1 to 11, characterized in that in particular when using a joint (1) with two mutually lying disks

(9a, 9b) on the swivel arm (10), which can be inserted into an adjacent second swivel arm (6) on the outer circumference, have a longitudinal toothing (19) for fixing the two swivel arms (6, 10) inserted into one another in different angular positions, the longitudinal toothing (19) including further recesses or bores (27) provided there locking device (25) is provided.

13. Swivel arm system according to one of claims 1 to 12, characterized in that a connecting arm for anchoring to a support rod (11) and for anchoring screw clamps (12; 56) is provided at the respective end of a swivel arm system.