DE102020103383A1 - Rotatable and swiveling workpiece carrier - Google Patents

Abstract

The invention relates to a workpiece carrier (10) for supporting a workpiece (12)
a support body (14) with a horizontal axis of rotation (H);
a rotating unit (16) with a vertical axis of rotation (V), wherein the rotating unit (16) is at least partially arranged on the carrier body (14), and wherein at least one receiving element (18a-181) and at least one
Clamping elements (20a-20e) are arranged on the rotating unit (16) to support the workpiece (12);
a frame arrangement (22) which at least partially surrounds the carrier body (14);
wherein the workpiece carrier (10) has a swivel system (24a, 24b) in order to swivel the carrier body (14) relative to the frame arrangement (22) about the horizontal axis of rotation (H);
wherein the workpiece carrier (10) has a bearing arrangement (26) in order to rotate the rotary unit (16) relative to the carrier body (14) about the vertical axis of rotation (V). This enables a safe and flexible workpiece carrier (10) for storing a workpiece (12).

Description

The invention relates to a rotatable and pivotable workpiece carrier. Workpiece carriers are provided to fix workpieces that are to be processed afterwards.

In today's assembly processes, increasing product complexity and a large number of individual parts to be assembled with different joining directions stand in the way of a cost-reducing standardization of assembly steps.

Generally known machine tools have a workpiece carrier with an axis of rotation. As a rule, workpieces are joined to the workpiece carrier along a joining axis when they are assembled. By rotating the workpiece around its vertical axis of rotation, components can be mounted in different positions. The vertical axis of rotation is the axis of rotation perpendicular to the horizon. Optionally, this definition can also be rejected. Ideally, the joining axis of the workpiece is parallel to the vertical axis of rotation. If the joining axis of the workpiece is not parallel to the vertical axis of the workpiece carrier, the workpiece must be brought into the appropriate spatial position before the joining process. Turning units are usually used for this. However, this increases the assembly complexity and at the same time reduces the flexibility of the workpiece carrier.

Alternative previously known concepts of workpiece carriers are unsafe or uneconomical.

It is therefore the object of the invention to create an improved workpiece carrier which overcomes the aforementioned disadvantages.

The object is achieved according to the invention by a workpiece carrier with the features of claim 1. Preferred embodiments of the invention are specified in the subclaims and the following description, each of which can represent an aspect of the invention individually or in combination.

Accordingly, a workpiece carrier is provided for supporting a workpiece
a support body with a horizontal axis of rotation;
a rotating unit with a vertical axis of rotation, wherein the rotating unit is at least partially arranged on the carrier body, and wherein at least one receiving element and at least one clamping element are arranged on the rotating unit in order to support the workpiece;
a frame arrangement which at least partially surrounds the carrier body;
wherein the workpiece carrier has a swivel system in order to swivel the carrier body relative to the frame arrangement about the horizontal axis of rotation;
wherein the workpiece carrier has a bearing arrangement in order to rotate the rotary unit relative to the carrier body about the vertical axis of rotation.

The basic idea of the invention is thus to add a further axis of rotation for the workpiece carrier compared to previously known workpiece carriers, so that in particular a vertical and a horizontal axis of rotation exist. By adding this second axis of rotation, the workpiece can be rotated in any spatial position on the workpiece carrier. The room liquor no longer needs to be changed using the turning unit, but can be implemented using the workpiece carrier itself. In this case, the rotating unit, which has a vertical axis of rotation, is mounted in the stationary frame arrangement so as to be rotatable about a horizontal axis of rotation via the carrier body. By combining the rotary adjustment of the rotary unit and its pivoting about the horizontal axis of rotation via the carrier body, any spatial positions for the workpiece can be set with the flexible workpiece carrier. Additional turning units are no longer required.

The fact that the rotary unit is at least partially arranged on the carrier body means, for example, that the rotary unit, in addition to resting on the carrier body, can extend at least partially axially, i.e. along the vertical axis of rotation, as far as under the carrier body in order to counter it from below with a plain bearing element, for example. Incidentally, the formulation on the carrier body when interpreting the orientation is to be understood in particular in such a way that the weight of the rotary unit acts on the carrier body in the basic state, for example when setting up the workpiece carrier.

The fact that the frame arrangement at least partially surrounds the carrier body means that an extension section of the carrier body lies within an extension section of the frame arrangement. If a user of the workpiece carrier thus holds his hands on the outer edge of the frame arrangement, there is no risk of injury from the carrier body in the areas in which the frame arrangement surrounds the carrier body circumferentially. Preferably, the frame arrangement completely surrounds the carrier body. The frame arrangement and the support body can have different outer contours. Furthermore, this embodiment is structurally advantageous, since the outer area of the carrier body is thus used for pivoting can be stored protected by an inner region of the frame assembly.

A receiving element extends in particular parallel to the vertical axis of rotation. For example, the receiving element can be a bolt. The workpiece is placed on the receiving element and is thus secured against horizontal movement. If, for example, there are two or more receiving elements, the workpiece can no longer rotate around a respective receiving element. The workpiece carrier particularly preferably has at least three receiving elements or more in order to distribute loads to the individual receiving elements in a manner that is gentle on components.

A clamping element fixes the workpiece in particular in the vertical direction. If the carrier body is pivoted by 180 degrees, for example, so that it is upside down, the at least one clamping element can secure the workpiece in such a way that it does not fall down due to its weight. The workpiece carrier preferably has at least two, particularly preferably at least three clamping elements or more.

The formulation preferably means an extension along the horizon horizontally and an extension perpendicular to the horizon vertically, that is to say an extension running along the force of weight. However, deviations from this are also possible. It is preferred that horizontal and vertical axes of rotation are to be understood as two axes of rotation arranged perpendicular to one another.

According to a preferred embodiment of the invention it is provided that the swivel system has two swivel bearings which are each arranged between the carrier body and the frame arrangement and which are arranged diagonally opposite one another in particular along the carrier body. Such swivel bearings enable the carrier body, the rotary unit and thus the workpiece to be swiveled about the horizontal axis of rotation. Furthermore, the swivel bearings enable a component-saving load distribution on the frame arrangement.

According to a preferred embodiment of the invention it is provided that the bearing arrangement is designed as a slide bearing. In addition to roller bearings, plain bearings are frequently used types of bearings in machine and equipment construction. In the plain bearing, the two parts moving relative to one another, in this case the support body and the rotating unit, have direct contact. They slide on each other against the resistance caused by sliding friction. This can be kept low by choosing a low-friction material pairing, by lubrication or by creating a lubricating film, also known as so-called full lubrication. With full lubrication, the two contact surfaces are separated from each other. In view of the different or differing spatial positions for respective workpieces, the plain bearing has proven to be an advantageously flexible bearing form.

According to a preferred embodiment of the invention it is provided that the carrier body and the rotary unit have an overlapping opening section at least in the area of the vertical axis of rotation. This increases the flexibility of the workpiece carrier, since it can accommodate workpieces which extend downward through the main plane of extent of the workpiece carrier. Workpieces can also be machined on the underside. For this purpose, a workpiece is clamped and the carrier body is swiveled through, for example, 180 degrees. The underside of the clamped workpiece is now free for machining. This means that the workpiece carrier can be used in a variety of ways for at least partially complex workpieces. Optimally, the workpiece also does not have to be re-clamped if it is to be machined on more than one side, for example on the top and bottom.

According to a preferred embodiment of the invention it is provided that the frame arrangement has a rectangular basic structure. The basic rectangular structure can preferably comprise a classic rectangle, but also its special shape, namely a square. The corner and / or edge areas of the frame arrangement can be rounded or chamfered. This creates a safe and clear construction structure for users of the workpiece carrier, so that, in addition to the versatile usability of the workpiece carrier, the safety of the user is also guaranteed. Furthermore, this allows the pivoting system to be arranged between the carrier body and the frame arrangement in such a way that the workpiece carrier as a whole can be mechanically stressed and can be manufactured cost-effectively.

According to a preferred embodiment of the invention it is provided that the workpiece carrier has a fixing system in order to optionally secure the rotary unit against rotating relative to the carrier body about the vertical axis of rotation. As soon as the workpiece is in its assembly rotational position in relation to the vertical axis of rotation, the fixing system can be closed so that it is fixed, so that the workpiece does not impair the safety of the user. Furthermore, the workpiece is machined without an undesired rotational movement of the same.

According to a preferred embodiment of the invention it is provided that the Workpiece carrier has a locking system in order to optionally secure the carrier body against pivoting relative to the frame arrangement about the horizontal axis of rotation. This is advantageous in order to prevent a user of the workpiece carrier from being injured by unintentional pivoting. This also facilitates assembly so that it can be carried out more safely and quickly or more cost-effectively.

According to a preferred embodiment of the invention it is provided that the locking system has at least one locking means which is arranged on the carrier body in such a way that when the locking means is actuated, the carrier body can pivot about the horizontal axis of rotation relative to the frame arrangement, the locking means in particular as a handle lever is designed to pivot the support body. The locking means can be, for example, a tension bolt, and can in particular be counter-supported with a spring system. This means that pivoting is only possible when the pulling bolt is pulled by the user. If the user inadvertently lets go of the tension bolt, for example by slipping out of the hand, the spring system can reset the tension bolt and thus prevent further pivoting. If the locking means, for example the tension bolt, is also designed as a handle lever, this handle lever can be used to exert a corresponding leverage effect on the carrier body in such a way that it is pivoted.

According to a preferred embodiment of the invention it is provided that the locking system has at least one locking arrangement which is arranged on the frame arrangement, in particular on its outer end face, in order to enable the support body to pivot relative to the frame arrangement about the horizontal axis of rotation when the locking arrangement is actuated . The arrangement on the frame arrangement increases the degree of work safety for the user, so that his hand for actuating the locking arrangement is far away from the support body with the rotating unit, or from the workpiece. The frame arrangement particularly preferably has an end face on the circumferential side, on the outer region of which the locking arrangement is arranged. Thus, the locking arrangement is basically as far away from the workpiece as possible.

According to a preferred embodiment of the invention it is provided that a pivoting of the carrier body relative to the frame arrangement about the horizontal axis of rotation is only possible if the aforementioned locking means and the aforementioned locking arrangement of the locking system are actuated simultaneously. This increases the safety of the user considerably, since with one hand on the locking arrangement he is far away from the carrier body with the rotating unit, or from the workpiece. The user's second hand is also on the locking system, namely on the locking means. Both the locking arrangement and the locking means block the pivoting of the carrier body as soon as a component of the locking system is not actuated. The user is therefore not exposed to any risk of injuring one or both hands during the operation of the workpiece carrier, for example by slipping off the locking means while the carrier body is pivoting.

• 1: einen Werkstückträger zur Lagerung eines Werkstücks gemäß einer bevorzugten Ausführungsform der Erfindung in einer perspektivischen Ansicht;
• 2: den Werkstückträger nach 1 in einer anderen perspektivischen Ansicht mit Darstellung einer vertikalen und einer horizontalen Drehachse;
• 3: den Werkstückträger nach 1 in einer Draufsicht mit Darstellung der resultierenden Dreheinheit-Drehrichtung bei einer Drehung der Dreheinheit um die vertikale Drehachse;
• 4: den Werkstückträger nach 1 in einer Seitenansicht mit Darstellung der resultierenden Trägerkörper-Drehrichtung bei einem Schwenken des Trägerkörpers um die horizontale Drehachse;
• 5: den Werkstückträger nach 1 mit einem montierten Werkstück in perspektivischen Ansichten mit unterschiedlichen Drehlagen; und
• 6: eine Schnittdarstellung eines Ausschnitts des Werkstückträgers nach 1.

In the following, the invention is explained by way of example with reference to the attached drawings using preferred exemplary embodiments, wherein the features presented below can represent an aspect of the invention both individually and in combination. Show it:

• 1 : a workpiece carrier for supporting a workpiece according to a preferred embodiment of the invention in a perspective view;
• 2 : the workpiece carrier after 1 in another perspective view showing a vertical and a horizontal axis of rotation;
• 3 : the workpiece carrier after 1 in a plan view showing the resulting rotary unit direction of rotation when the rotary unit rotates about the vertical axis of rotation;
• 4th : the workpiece carrier after 1 in a side view showing the resulting direction of rotation of the support body when the support body is pivoted about the horizontal axis of rotation;
• 5 : the workpiece carrier after 1 with a mounted workpiece in perspective views with different rotational positions; and
• 6th : a sectional view of a section of the workpiece carrier according to 1 .

the 1 until 5 show a preferred embodiment of a workpiece carrier 10 for storing a workpiece 12th . This workpiece carrier 10 points to a carrier body 14th with a horizontal axis of rotation H ;
a turntable 16 with a vertical axis of rotation V , the turntable 16 at least partially on the carrier body 14th is arranged, and wherein at least one receiving element 18a - 18l and at least one tensioning element 20a - 20e on the turntable 16 are arranged around the workpiece 12th to store;
a frame assembly 22nd that are the support body 14th at least partially encloses the circumference;
where the workpiece carrier 10 a swivel system 24a , 24b has to the support body 14th relative to the frame arrangement 22nd around the horizontal axis of rotation H to pan;
where the workpiece carrier 10 a bearing arrangement 26th has to the turntable 16 relative to the support body 14 about the vertical axis of rotation V to turn.

That the turntable 16 at least partially on the carrier body 14th is arranged means, for example, as in 6th shown that the turntable 16 at least partially axially, that is, along the vertical axis of rotation V , to under the carrier body 14th can extend in order to counter this, for example, with a sliding bearing element. The formulation is otherwise on the carrier body 14th when interpreting the orientation in particular to be understood in such a way that the weight of the rotating unit 16 in the basic state, for example when setting up the workpiece carrier 10 , on the carrier body 14th works.

The representation of the workpiece carrier 10 differs in the 1 until 5 by a different number of receiving elements 18a - 18l and clamping elements 20a - 20e . Here are the carrier body 14th and the turntable 16 in the 4th , 5a , 5b , 5c and 5d shown in different spatial positions.

6th shows a sectional view through the carrier body 14th and the rotating unit arranged at least partially thereon 16 . A receiving element 18a, a clamping element 20a, the frame arrangement can also be seen in section 22nd and the bearing arrangement 26th .

As in 4th the swivel system is shown 24a , 24b provided to the support body 14th relative to the frame arrangement 22nd around the horizontal axis of rotation H to pan. The swivel system 24a , 24b two pivot bearings, each between the support body 14th and the frame assembly 22nd are arranged. How good in 3 can be seen, the two preferred swivel bearings of the swivel system 24a , 24b along the carrier body 14th arranged diagonally opposite one another. In particular and independently of other features, the pivot bearings are equidistant from the vertical axis of rotation V arranged.

In particular from the representation of the workpiece carrier 10 in 6th it can be seen that the bearing arrangement 26th is designed as a plain bearing. In this case, the sliding bearing has only two examples of sliding areas that the rotating unit 16 store in such a way that they face the support body 14th is rotatable in the circumferential direction. Optionally, the sliding bearing is designed in such a way that the rotating unit 16 also axially to the carrier body 14th , i.e. along the vertical axis of rotation V , is movable.

In 3 it is easy to see that the carrier body 14th and the turntable 16 at least in the area of the vertical axis of rotation V have an intersecting opening portion. 5b shows that it can be quite advantageous to provide such an opening section, although that in 5b shown workpiece 12th does not extend through the opening portion. However, it is advantageous that an opening section is present for the workpiece to be positioned 12th can thereby extend or thus the workpiece 12th can be processed from the underside.

Furthermore is good in 3 recognizable that the frame arrangement 22nd has a rectangular basic structure. The entire structure of the workpiece carrier is located here 10 within this basic rectangular structure, so that this provides increased security for a user.

Especially in the 1 until 3 it is easy to see that the workpiece carrier 10 a fixation system 28 has to the turntable 16 optionally against turning relative to the carrier body 14th around the vertical axis of rotation V to secure. The fixation system 28 is shown as a switch that controls the turntable 16 Depending on its position, it holds either fixed or freely around the vertical axis of rotation V lets turn.

In the 1 until 5 it is also shown that the workpiece carrier 10 a locking system 30th has to the support body 14th optionally against pivoting relative to the frame arrangement 22nd around the horizontal axis of rotation H to secure.

Also is in the 1 until 5 shown that the locking system 30th at least one locking means 32 has, the such on the carrier body 14th is arranged that in the actuated state of the locking means 32 pivoting of the carrier body 14th relative to the frame arrangement 22nd around the horizontal axis of rotation H is made possible, the locking means 32 in particular as a handle lever for pivoting the carrier body 14th is trained. The function as a handle lever can be exemplified 4th can be derived. There is the locking means 32 shown in a side view. Provided that a user, who is not shown, the locking means 32 actuated and thereby moved up or down as a handle lever, the pivoting movement shown by the arrows takes place.

It is also provided that the locking system 30th at least one locking arrangement 34 having on the frame assembly 22nd is arranged to be in the actuated state of the locking arrangement 34 pivoting of the carrier body 14th relative to the frame arrangement 22nd around the horizontal axis of rotation H to enable. In particular, a consideration of the 1 until 4th shows the locking arrangement 34 for example, it can be designed as a pressure element, in particular as a push button. Here is the locking arrangement 34 especially on the outside of the frame assembly 22nd arranged. This is the user's hand when actuating the locking arrangement 34 from the pivoting support body 14th removed. The hand is not shown.

It is also preferred that the carrier body be pivoted 14th relative to the frame arrangement 22nd around the horizontal axis of rotation H is only possible if the locking means 32 and the locking arrangement 34 the locking system 30th are operated at the same time. Only in this way can the exemplary spatial positions according to the 5a , 5b , 5c and 5d to adjust.

List of reference symbols

10

Workpiece carrier

12th

workpiece

14th

Carrier body

16

Turntable

18a - I.

Receiving element

20a-e

Clamping element

22nd

Frame arrangement

24a, b

Swivel system

26th

Bearing arrangement

28

Fixing system

30th

Locking system

32

Locking means

34

Locking arrangement

H

horizontal axis of rotation

V

vertical axis of rotation

Claims (10)

Workpiece carrier (10) for supporting a workpiece (12), having - A carrier body (14) with a horizontal axis of rotation (H); - A rotating unit (16) with a vertical axis of rotation (V), wherein the rotating unit (16) is at least partially arranged on the carrier body (14), and wherein at least one receiving element (18a-181) and at least one clamping element (20a-20e) are arranged on the rotating unit (16) to support the workpiece (12); - A frame arrangement (22) which at least partially surrounds the carrier body (14); wherein the workpiece carrier (10) has a swivel system (24a, 24b) in order to swivel the carrier body (14) relative to the frame arrangement (22) about the horizontal axis of rotation (H); wherein the workpiece carrier (10) has a bearing arrangement (26) in order to rotate the rotary unit (16) relative to the carrier body (14) about the vertical axis of rotation (V). Workpiece carrier (10) for storing a workpiece (12) according to Claim 1 , characterized in that the swivel system (24a, 24b) has two swivel bearings which are each arranged between the carrier body (14) and the frame arrangement (22) and which are arranged diagonally opposite one another in particular along the carrier body (14). Workpiece carrier (10) for storing a workpiece (12) according to Claim 1 or 2 , characterized in that the bearing arrangement (26) is designed as a slide bearing. Workpiece carrier (10) for supporting a workpiece (12), according to at least one of the preceding claims, characterized in that the carrier body (14) and the rotary unit (16) have an overlapping opening section at least in the area of the vertical axis of rotation (V). Workpiece carrier (10) for supporting a workpiece (12) according to at least one of the preceding claims, characterized in that the frame arrangement (22) has a rectangular basic structure. Workpiece carrier (10) for storing a workpiece (12), according to at least one of the preceding claims, characterized in that the workpiece carrier (10) has a fixing system (28) to optionally prevent the rotating unit (16) from rotating relative to the carrier body (14) ) to secure the vertical axis of rotation (V). Workpiece carrier (10) for supporting a workpiece (12), according to at least one of the preceding claims, characterized in that the workpiece carrier (10) has a locking system (30) to optionally prevent the carrier body (14) from pivoting relative to the frame arrangement (22 ) to secure the horizontal axis of rotation (H). Workpiece carrier (10) for storing a workpiece (12) according to Claim 7 , characterized in that the locking system (30) has at least one locking means (32) which is arranged on the carrier body (14) in such a way that in the actuated state of the locking means (32) pivoting of the support body (14) relative to the frame arrangement (22) about the horizontal axis of rotation (H) is enabled, the locking means (32) being designed in particular as a handle lever for pivoting the support body (14). Workpiece carrier (10) for storing a workpiece (12) according to Claim 7 or 8th , characterized in that the locking system (30) has at least one locking arrangement (34) which is arranged on the frame arrangement (22) in order to pivot the support body (14) relative to the frame arrangement (22) when the locking arrangement (34) is actuated. to enable the horizontal axis of rotation (H). Workpiece carrier (10) for storing a workpiece (12), according to the Claims 8 and 9 , characterized in that a pivoting of the support body (14) relative to the frame arrangement (22) about the horizontal axis of rotation (H) is only possible if the locking means (32) and the locking arrangement (34) of the locking system (30) are actuated simultaneously.

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