DE202019106466U1 - Holding device for workpiece holders - Google Patents

Abstract

Holding device (1) for workpiece holders, with:
- a base plate (3) to rest on a substrate,
- A standpipe device which is connected to the base plate (3) and which has an outer pipe (5) and an inner pipe (7) which is mounted displaceably relative to the outer pipe (5), a first clamping device (25) being provided with which the inner tube (7) can be fixed in a desired height position relative to the outer tube (5),
- A workpiece holder (9) which comprises a bearing device (11) which is arranged at the upper end of the inner tube (7) and has a bearing plate (13) on which a rotatably mounted swivel head (15) is mounted, which is mounted about an axis of rotation (19) is pivotable and in turn supports a rotatable receiving mandrel (21, 93), a second clamping device (26) being provided with which the receiving mandrel (21) can be fixed in a desired position in the swivel head (15), and
- A locking device for locking the swivel head (15) in a desired swivel position, which has a releasable engagement device (41) which cooperates with a receiving device (16) of the swivel head (15).

Description

The present invention relates to a holding device for holding workpieces.

A recording device for workpiece holders of the prior art is from EP 2 357 060 B1 known. This has a base for resting on a substrate and a standpipe device which is connected to the base and in which a bearing device for a workpiece holder is arranged. The bearing device comprises a bearing ball which is rotatably mounted in the uppermost section of the standpipe device and a holding device which can be connected to the bearing ball and serves to detachably accommodate the workpiece holder, the bearing ball being mounted on a bearing ring. The bearing ball and the holding device that can be connected to it can be tilted in all directions without restriction, the bearing ball being pressed against a substantially horizontal, circumferential brake ring in the rest position and being lowered in the operating or moving position together with the bearing ring in relation to the brake ring.

The recording device of this prior art requires a complex pneumatic control including a vacuum system, which makes the device as a whole very complex and thus expensive.

The present invention is therefore based on the object of proposing a holding device for workpiece holding devices which enables a simple and thus inexpensive construction and is simple and easy to operate.

This object is achieved by the features of claim 1.

• - einer Bodenplatte zur Auflage auf einem Untergrund,
• - einer Standrohreinrichtung, die mit der Bodenplatte verbunden ist und die ein Außenrohr und ein Innenrohr aufweist, das gegenüber dem Außenrohr verschiebbar gelagert ist, wobei eine erste Klemmeinrichtung vorgesehen ist, mit der das Innenrohr gegenüber dem Außenrohr in einer gewünschten Höhenstellung fixierbar ist,
• - einer Werkstückaufnahme, die eine Lagereinrichtung umfasst, die am oberen Ende des Innenrohrs angeordnet ist und eine Lagerplatte aufweist, auf der ein drehbar gelagerter Schwenkkopf gelagert ist, der um eine Drehachse schwenkbar ist und seinerseits einen drehbaren Aufnahmedorn lagert, wobei eine zweite Klemmeinrichtung vorgesehen ist, mit der der Aufnahmedorn in dem Schwenkkopf in einer gewünschten Position fixierbar ist, und
• - einer Arretiereinrichtung zum Arretieren des Schwenkkopfes in einer gewünschten Schwenkposition, die eine lösbare Eingriffseinrichtung aufweist, welche mit einer Aufnahmeeinrichtung des Schwenkkopfes zusammenwirkt.

According to the present invention, the fixture for workpiece fixtures is equipped with:

• - a base plate to rest on a surface,
• - A standpipe device which is connected to the base plate and which has an outer pipe and an inner pipe which is mounted displaceably with respect to the outer pipe, a first clamping device being provided with which the inner pipe can be fixed in a desired height position with respect to the outer pipe,
• - A workpiece holder, which comprises a bearing device which is arranged at the upper end of the inner tube and has a bearing plate on which a rotatably mounted swivel head is mounted, which is pivotable about an axis of rotation and in turn supports a rotatable receiving mandrel, a second clamping device being provided , with which the mandrel can be fixed in a desired position in the swivel head, and
• - A locking device for locking the swivel head in a desired swivel position, which has a releasable engagement device which cooperates with a receiving device of the swivel head.

This advantageously achieves a very simple and efficient structure of the receiving device, in particular both simple mechanical operation by clamping by means of simple clamping levers and actuation of a simple actuating element as well as a robust structure being realized. The risk of improper operation of the receiving device can be avoided, as can the failure of more complex drive devices and control devices.

The swivel head advantageously has an essentially semicircular locking section in which the receiving device is formed. This enables a simple geometric design of the swivel head.

The receiving device advantageously has a plurality of locking openings, which enables the swivel head to be pivoted in stages. For example, the locking openings are distributed at a distance of 30 ° over a total angle of 180 °, so that a total of seven pivot positions of the floating head and thus of the workpiece holder are created.

Furthermore, it is advantageous that sleeve-shaped, low-wear position elements are arranged in the locking openings for mounting the releasable engagement device of the locking device. For example, brass sleeves are used in the locking openings, which are low-wear and also have good sliding properties. Alternatively, hardened steel bushings can also be used.

It is also advantageous that the releasable engagement device of the locking device for locking the swivel head has a locking bolt which can optionally be releasably brought into engagement with one of the locking openings. This promotes rapid pivoting of the swivel head.

It is also advantageous that the locking bolt is connected to a Bowden cable, by means of which the locking bolt can be moved from a pretensioned engagement position into a disengaged position.

The Bowden cable advantageously has a cable, preferably a wire cable, one of which End is connected to the locking bolt and at the other end of which an actuating element is arranged, the rope being guided by a pulley, and when the actuating element is actuated, the locking bolt can be moved from its engaged position to its disengaged position. Thus, the locking of the locking bolt can be released in a simple manner by actuating the actuating element and the swivel head can be shifted into another position, the locking bolt moving into the now provided receiving device due to the bias on the actuating element when it is released. The locking bolt is pretensioned into the engagement position by means of a spring.

It is therefore particularly advantageous that the actuating element is a foot pedal, because when the operator actuates the foot pedal, the operator still has both hands free to swivel the workpiece mounted on the workpiece holder accordingly.

Furthermore, simple operation of the receiving device is achieved in that the first clamping device has a rotatable clamping lever, it being possible to clamp or loosen the inner tube on the outer tube or from the outer tube by rotating the clamping lever.

It is also advantageous that the second clamping device has a rotatable clamping lever, it being possible to clamp or release the rotatable receiving mandrel by rotating the clamping lever.

It is also advantageous that a gas spring engages the inner tube, by means of which the inner tube can be extended upwards out of the outer tube. As a result, the weight of the inner tube, the bearing device with the swivel head and the workpiece arranged thereon can essentially be compensated, and the workpiece can be adjusted in height for machining it in a simple manner. In other words, the gas pressure spring serves to support the height adjustment and, in particular with regard to occupational health and safety, is intended to prevent the workpiece holder from sagging when the first clamping device is opened. The holding force can be adapted individually to the applications of the user of the holding device.

Furthermore, it is also advantageous that the receiving mandrel is rotatably mounted in a ball bearing, as a result of which a particularly stable and easily rotatable mounting is achieved.

The present invention is not limited to the above-described embodiments. In an alternative embodiment, the gas pressure spring is dispensed with, the lowering of the inner tube in the outer tube being able to be controlled by a correspondingly sensitive release of the clamping lever of the first clamping device.

For example, instead of the Bowden cable, pneumatic actuation can also take place, with which the locking bolt can be released. The locking bolt can be moved out of its locking position by means of a controllable pneumatic cylinder and, after pivoting the swivel head, can be reinserted into the locking opening provided for this purpose in the form of the corresponding blind hole.

• 1 eine perspektivische Ansicht von schräg oben auf eine Ausführungsform der erfindungsgemäßen Aufnahmevorrichtung;
• 2 eine perspektivische Ansicht ähnlich zu jener von 1, jedoch gegenüber dieser um 90° gedreht und ohne Außenrohr, Innenrohr, der Lagereinrichtung des Schwenkkopfs, der Lagereinrichtung des Aufnahmedorns sowie des Aufnahmedorns;
• 3 eine Schnittansicht von Außenrohr und Innenrohr ohne innere Einrichtungen, jedoch mit der ersten Klemmeinrichtung;
• 4 in vergrößertem Maßstab die Einzelheit Z von 3;
• 5 eine Schnittansicht der Einzelheit Z, jedoch von unten;
• 6 eine Ansicht des Schwenkkopfes von einer Seite;
• 7 eine Schnittansicht entlang der Linie C - C von 6;
• 8 eine Ansicht der Arretiereinrichtung des Schwenkkopfes mit Bowdenzug in Arretierungsposition;
• 9 eine Ansicht der Arretiereinrichtung von 8, jedoch mit gelöster Arretiereinrichtung.
• 10 eine perspektivische Ansicht schräg von oben des Schwenkkopfs mit einer ersten Ausführungsform der Lagereinrichtung mit einem Aufnahmedorn;
• 11 eine Seitenansicht des Aufnahmedorns;
• 12 eine Seitenansicht der Werkstückaufnahme mit zweiter Klemmeinrichtung, Aufnahmedorn und darauf angeordneter Haltevorrichtung;
• 13 eine Schnittansicht der Anordnung von 12, jedoch ohne Haltevorrichtung;
• 14 in vergrößertem Maßstab die Einzelheit Y von 13;
• 15 eine zweite Ausführungsform des Aufnahmedorns;
• 16 eine Schnittansicht einer zweiten Ausführungsform der Werkstückaufnahme mit dem Aufnahmedorn von 15; und
• 17 eine Ansicht der Einzelheit Z von 16.

Further details, features and advantages of the present invention emerge from the following description with reference to the accompanying drawing. It shows:

• 1 a perspective view obliquely from above of an embodiment of the receiving device according to the invention;
• 2 a perspective view similar to that of FIG 1 , but rotated by 90 ° with respect to this and without the outer tube, inner tube, the bearing device of the swivel head, the bearing device of the receiving mandrel and the receiving mandrel;
• 3 a sectional view of the outer tube and inner tube without internal devices, but with the first clamping device;
• 4th the detail Z of on a larger scale 3 ;
• 5 a sectional view of the detail Z, but from below;
• 6th a view of the swivel head from one side;
• 7th FIG. 13 is a sectional view taken along the line C - C of FIG 6th ;
• 8th a view of the locking device of the swivel head with Bowden cable in locking position;
• 9 a view of the locking device of 8th , but with the locking device released.
• 10 a perspective view obliquely from above of the swivel head with a first embodiment of the bearing device with a receiving mandrel;
• 11 a side view of the pick-up mandrel;
• 12th a side view of the workpiece holder with second clamping device, receiving mandrel and holding device arranged thereon;
• 13th a sectional view of the arrangement of 12th , but without holding device;
• 14th the detail Y of on a larger scale 13th ;
• 15th a second embodiment of the receiving mandrel;
• 16 a sectional view of a second embodiment of the workpiece holder with the receiving mandrel from FIG 15th ; and
• 17th a view of the detail Z of 16 .

In the figures, the same elements are denoted by the same reference numerals. The present invention is not limited to the illustrated embodiment. The scope of protection results from the protection claims.

Reference is first made to 1 . In a perspective view slightly from above, there is an embodiment of a receiving device according to the invention 1 shown. The cradle 1 has a base plate 3 to be placed on a substrate. On this base plate 3 is an outer tube 5 the receiving device 1 arranged. The outer tube 5 has an essentially rectangular, in particular square, cross-section. It is of course possible to use the outer tube 5 with alternative cross-sectional shapes. Depending on the area of application of the mounting device 1 can the outer tube 5 have an adapted height or length.

In the outer tube 5 is an inner tube 7th Arranged longitudinally movable, the storage of the inner tube 7th in the outer tube 5 below with reference to FIG 2 is described in more detail.

At the top of the inner tube 7th is a workpiece holder 9 arranged. This includes a storage facility 11 with a bearing plate 13th covering the top of the inner tube 7th covered.

How even clearer 10 shows the storage facility 11 a swivel head 15th on that in bearing plates 17th and 18th by means of an axis of rotation 19th is rotatably or pivotably mounted.

The storage facility 11 furthermore stores a first embodiment of a receiving mandrel 21 around its longitudinal axis in a bearing block 23 can turn. The mandrel 21 is used to hold a workpiece (not shown), which may be in a holder ( 12th : Workpiece holding device 77 ) is held and this holder on the mandrel 21 is releasably fastened. By turning the arbor 21 and / or pivoting the swivel head 15th the workpiece can be brought into almost any desired position.

How out 1 you can see the inner tube 7th in the outer tube 5 Arranged longitudinally displaceable, with a first clamping device 25th is provided with a longitudinal groove 27 in the inner tube 7th cooperates. The exact structure of the first clamping device 25th will be discussed below with reference to the 3 to 5 are explained in more detail.

Reference is now made to FIG 2 that have a view similar to that of 1 represents, but without the outer tube 5 and inner tube 7th and without storage facility 11 except for the swivel head 15th , taking the view of 2 opposite the view of 1 rotated 90 ° counterclockwise.

How out 2 can be seen, serves to fix and support the outer tube 5 a flat bearing plate 29 that are on the bottom plate 3 attached, for example screwed. As from the synopsis of the 1 and 2 can be seen in the bearing plate 29 Threaded holes 31 formed into the fastening screws (not shown) can be screwed, which extend through openings 32 of the outer tube 5 ( 1 ) in the assembled state.

For storing the inner tube 7th inside the outer tube 5 are guide plates 33 on the inner circumference of the outer tube 5 intended. These guide plates 33 are made of the material POM (polyoxymethylene), which allows a corresponding sliding of the inner tube 7th opposite the outer tube 5 supported. On the outside of the inner tube 7th are still guide plates 35 arranged for example by means of screw connections, which are also formed from the material POM. While the guide plates 33 stationary on the inside of the outer tube 5 are provided, the guide plates move 35 of the inner tube 7th together with the inner tube 7th along the inner surface of the outer tube 5 .

Reference is now made to FIG 6th and 7th in which the swivel head 15th is shown in side view and in sectional view along the line C - C. The swivel head 15th has a locking device for locking the swivel head 15th on which a receiving device 16 having. The receiving facility 16 has a plurality of blind holes 37 on, which are evenly distributed on a semicircular outer circumference 39 of the swivel head 15th are arranged.

In a simple embodiment, the blind holes act 37 with a releasable engagement device 41 together that serve the Swivel head 15th to lock in a selected angular position.

Preferably are in the blind holes 37 , which form locking openings, sleeve-shaped, low-wear bearing elements arranged to support the releasable engagement device 41 serve. The sleeves can be made of brass or hardened steel, for example. The blind holes 37 are evenly spaced from one another on the semicircular outer circumference 39 of the swivel head 15th arranged. In the example according to 10 are seven blind holes 37 on the outer circumference of the swivel head 15th arranged evenly distributed. The distance between the blind holes 37 is essentially 30 degrees.

According to 2 is below the swivel head 15th a U-shaped retaining element 44 provided for the storage of the engagement device 41 serves. The engagement device 41 has a locking bolt 43 on, which is always in engagement with one of the blind bores by means of bias, preferably spring bias 37 stands. This is the entire recording device 1 always in one position of the swivel head 15th fixed.

To release the locking position of the locking bolt 43 the engagement device 41 is a bowden cable 45 intended. This bowden cable 45 is formed from a rope 47 , preferably from a wire rope, one end of which with the locking pin 43 is connected and the other end of which is connected to an actuating element 49 connected is. The actuator 49 can for example be a foot pedal. Via a pulley 51 is the rope 47 with the foot pedal 49 connected, the locking position of the engagement device 41 in 8th is shown, and the release position of the engagement device 41 in 9 is shown.

To the rope 47 is between the holding element 44 and the pulley 51 a bowden cable cover 55 arranged. This arrangement works like a bicycle brake.

Via the lever-like foot pedal 49 the rope is tightened 47 how from the 8th and 9 visible, whereby the locking bolt 43 is moved from its engaged position to its disengaged position. Then the swivel head 15th be pivoted, and by releasing the actuating element 49 the locking bolt 43 into another blind hole 37 are used and the swivel head 15th thus be locked again. In this way, a simple mechanical adjustment possibility of the workpiece holder is provided with great advantage 9 created, which can be operated manually and thus requires no further energy.

How continue out 2 one can see a gas pressure spring 53 provided, which serves to create a counterforce to the weight of the workpiece holder 9 to provide. In particular, for safety reasons, it should be avoided that an unintentional lowering of the tool holder equipped with a corresponding workpiece 9 with a possible risk of injury is avoided.

By means of the gas pressure spring 53 is released when the first clamping device is released 25th a slow lifting of the workpiece holder 9 and the workpiece holder can be brought into an optimal height position for processing the workpiece arranged on it, which depends on the one hand on the workpiece itself and on the other hand on the size of the operator and the work to be performed on the workpiece.

Reference is now made to FIG 3 to 5 , with the aid of which the first clamping device 25th is explained in more detail. The clamping device 25th has a clamping lever 57 with an external thread. In 4th is the detail Z of 3 on a larger scale in the same view as 3 shown. In contrast, shows 5 a sectional view from below. The clamping lever 57 extends to a slot nut 59 , the one for receiving the external thread of the clamping lever 57 has a corresponding internal thread. The sliding block is located in the longitudinal groove 27 of the inner tube 7th . Between the sliding block 59 and the outer tube 5 is still a spacer plate 61 arranged from the inside against the inside of the outer tube 5 can be pressed. The clamping lever 57 extends both through an opening in the spacer plate 61 as well as through an opening in a washer 63 using a lock nut 65 by turning the clamping lever 57 against the outer tube 5 can be pressed. By turning the clamping lever 57 the inner tube can go in one direction 7th in its position with respect to the outer tube 5 can be fixed as well as the clamping by turning the clamping lever 57 be released in the other direction. This advantageously results in an extremely simple mechanical first clamping device 25th created. This is also extremely easy to use.

With reference to the 10 to 17th are different embodiments of the workpiece holder 9 described in more detail. In 10 is a first embodiment of the workpiece holder according to the invention 9 shown in perspective view, which is also that of 1 corresponds to.

In 11 is a first embodiment of the mandrel 21 shown. The mandrel 21 has a cylindrical body, in the lower end region of a plurality of Locking recesses 73 are arranged and designed, which extend over the entire circumference of the receiving mandrel 21 extend. In the upper end area of the arbor 21 there is a locking bolt mount 75 in the form of a blind hole which serves to receive a locking bolt, as will be explained later.

Above the swivel head 15th is the bearing block 23 , the one in the example shown with the swivel head 15th What is screwed through the four holes 24 is shown. By means of the bearing block 23 becomes the arbor 21 rotatably mounted.

In 12th is a side view of the mandrel 21 in the storage block 23 stored with the second clamping device 26th shown. On the arbor 21 is a workpiece holding device 77 shown with a pipe connector 81 and a locking bolt 79 , which is in the operating position of the workpiece holder 77 in the locking bolt mount 75 clicks into place. By pulling out the locking bolt 79 can the workpiece holding device 77 be solved again.

In 13th is the arrangement of 12th shown in sectional view, but without workpiece holding device 77 . The detail Y is on an enlarged scale in 14th shown. The mandrel 21 with a substantially smooth surface is by means of a ball bearing 83 rotatable in the bearing block 23 stored. The storage block 23 points to the inclusion of the ball bearing 83 an upper recess 85 on. Furthermore, the bearing block 23 a lower recess 86 into which a washer 89 can be introduced and by means of a screw 87 which in turn go into a threaded hole 88 from below into the mandrel 21 can be screwed into the underside of the receiving mandrel 21 is brought into plant.

The second clamping device 26th also has a clamping lever 67 with an external thread that goes into a threaded opening 91 of the bearing block 23 is screwed in. The clamping lever 67 has a thorn 68 with external thread, which is to be clamped in contact with a locking recess 73 of the arbor 21 comes, causing further rotation of the arbor 21 is prevented. This will make the take-up mandrel 21 non-rotatably clamped.

Referring now to the 15th to 17th becomes a second embodiment of the workpiece holder 9 described in more detail, with the 17th the detail Z of 16 represents on an enlarged scale.

In 15th is an alternate embodiment of the mandrel 93 shown in side view. The mandrel 93 has three sections of different diameters. A threaded section 95 is located at the upper end of the arbor 93 . In one application, a frame with clamping elements for the workpiece to be machined can be screwed on.

Furthermore, the receiving mandrel 93 a locking portion 97 on, as in the embodiment according to 11 Locking recesses 73 has over the entire outer circumference. Between the locking section 97 and the threaded section 95 there is a lower fastening section 99 and an upper mounting portion 100 . Both point one towards the sections 95 and 97 larger outer diameter.

In 16 is a sectional view of the workpiece holder 9 with the arbor 93 according to 15th shown. As can be seen, the receiving mandrel is 93 divided in two. The threaded section 95 is connected to the upper mounting section 100 or formed in one piece with this. The lower mounting section 99 , which is also plate-shaped like the upper fastening section 100 is formed with substantially the same outer diameter, is integral with the locking portion 97 connected. The circular sections 99 and 100 are connected to each other by screws, which are in screw holes 101 are screwed in.

How out 17th the lower fastening section can be seen 99 on the ball bearing 83 stored in such a way that the receiving mandrel 93 in the storage block 23 can turn and by means of the clamping lever 67 with the corresponding external thread 68 in one of the locking recesses 73 can be locked. How continue from the 16 and 17th can be seen is the washer 89 by means of a screw 87 which in the threaded hole 88 engages on the underside of the locking portion 97 brought into plant.

With the present invention, a simple, inexpensive, stable, easily adjustable and manageable receiving device for receiving workpieces is thus created, which enables an extremely flexible adjustability of a workpiece receiving device.

List of reference symbols

1

Cradle

3

Base plate

5

Outer tube

7th

Inner tube

9

Workpiece holder

11

Storage facility

13th

Bearing plate

15th

Swivel head

16

Receiving facility

17th

Bearing plate

18th

Bearing plate

19th

Axis of rotation

21

Arbor

23

Bearing block

24

drilling

25th

first clamping device

26th

second clamping device

27

Longitudinal groove

29

Bearing plate

31

Threaded holes

32

openings

33

Guide plates

35

Guide plates

37

Blind hole

39

semicircular locking section

41

Engagement device

43

Locking bolt

44

U-shaped retaining element

45

Bowden cable

47

rope

49

Actuating element (foot pedal)

51

Pulley

53

Gas spring

55

Bowden cable cover

57

Clamping lever with external thread

59

Sliding block

61

Spacer plate

63

Washer

65

Lock nut

67

Clamping lever with external thread

68

mandrel

71

Thrust washer

72

head

73

Locking recess

75

Locking bolt mount

77

Workpiece holding device

79

Locking bolt

81

Pipe connector

83

ball-bearing

85

Recess

86

Recess

87

screw

88

Threaded hole

89

Washer

91

Threaded hole

93

Arbor

95

Threaded section

97

Locking section

99

lower fastening section

100

upper fastening section

101

Screw holes

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 2357060 B1 [0002]

Claims (12)

Holding device (1) for workpiece holders, with: - a base plate (3) to rest on a substrate, - A standpipe device which is connected to the base plate (3) and which has an outer pipe (5) and an inner pipe (7) which is mounted displaceably relative to the outer pipe (5), a first clamping device (25) being provided with which the inner tube (7) can be fixed in a desired height position relative to the outer tube (5), - A workpiece holder (9) which comprises a bearing device (11) which is arranged at the upper end of the inner tube (7) and has a bearing plate (13) on which a rotatably mounted swivel head (15) is mounted, which is mounted about an axis of rotation (19) is pivotable and in turn supports a rotatable receiving mandrel (21, 93), a second clamping device (26) being provided with which the receiving mandrel (21) can be fixed in a desired position in the swivel head (15), and - A locking device for locking the swivel head (15) in a desired swivel position, which has a releasable engagement device (41) which cooperates with a receiving device (16) of the swivel head (15). Recording device according to Claim 1 , characterized in that the swivel head (15) has an essentially semicircular locking section (39) in which the receiving device (16) is formed. Recording device according to Claim 2 , characterized in that the receiving device (16) has a plurality of locking openings (37). Recording device according to Claim 3 , characterized in that sleeve-shaped, low-wear bearing elements are arranged in the locking openings (37) for mounting the releasable engagement device (41) of the locking device. Recording device according to one of the Claims 1 to 4th , characterized in that the releasable engagement device (41) of the locking device for locking the swivel head (15) has a locking bolt (43) which can optionally be releasably engaged with one of the locking openings (37). Recording device according to Claim 5 , characterized in that the locking bolt (43) is connected to a Bowden cable (45) by means of which the locking bolt (43) can be moved from a pretensioned engagement position into a disengaged position. Recording device according to Claim 6 , characterized in that the Bowden cable (45) has a rope (47), preferably a wire rope, one end of which is connected to the locking bolt (43) and at the other end of which an actuating element (49) is arranged, the rope (47 ) is guided over a deflection roller (51), and when the actuating element (49) is actuated, the locking bolt (43) can be moved from its engaged position into its disengaged position. Recording device according to Claim 7 , characterized in that the actuating element (49) is a foot pedal. Recording device according to one of the Claims 1 to 8th , characterized in that the first clamping device (25) has a rotatable clamping lever (57), whereby by rotating the clamping lever (57) clamping or releasing of the inner tube (7) to the outer tube (5) or from the outer tube (5 ) is accomplished. Recording device according to one of the Claims 1 to 9 , characterized in that the second clamping device (26) has a rotatable clamping lever (67), clamping or loosening of the rotatable receiving mandrel (21) being achieved by rotating the clamping lever (67). Recording device according to one of the Claims 1 to 10 , characterized in that a gas pressure spring (53) engages the inner tube (7), by means of which the inner tube (7) can be extended upwards out of the outer tube (5). Recording device according to one of the Claims 1 to 11 , characterized in that the receiving mandrel (21, 93) is rotatably mounted in a ball bearing (83).

Images