TOOLLESS ROTARY INDEXING TABLE ARRANGEMENT

Description

[0001] The invention relates to a tool-free rotary indexing table assembly with a pressure bolt lock. Such a rotary indexing table assembly is known from CN 109 623 416 A.

[0002] In previously known rotary indexing table arrangements, loosening and subsequently tightening screws during setup of a rotary indexing table arrangement causes a considerable amount of time. For this purpose, a respective rotating means is usually screwed to a holding arrangement. This requires an additional tool. In more concrete terms, this means that the additional tool is used to convert the rotary indexing table arrangement in order to loosen or screw one or more screws. On the one hand, this takes time to retrieve the tool from its storage location and carry out the corresponding assembly steps. On the other hand, the tool must be procured, which is costly, and then stored ready to hand. The object of the invention is to enable a rotary indexing table arrangement that simplifies or accelerates setup or conversion.

[0003] The object is achieved according to the invention by a rotary indexing table arrangement having the features of claim 1. Preferred embodiments of the invention are specified in the subclaims and the following description, which may each individually or in combination represent an aspect of the invention.

[0004] Accordingly, the problem is solved by a rotary indexing table arrangement with a rotary axis, comprising a rotating means rotatable about the rotation axis with a centering opening coaxial with the rotation axis; a receiving arrangement with a bolt arrangement, wherein the bolt arrangement has a bolt body movable along the rotation axis with a spring system, which bolt body can be set into a set-up state or a locked state such that the rotating means is detachably connected to the receiving arrangement in the set-up state, and that the rotating means is non-detachably connected to the receiving arrangement in the locked state, and that the bolt body of the bolt arrangement penetrates the centering opening.

[0005] The basic idea of ​​the invention and individual preferred aspects of the claimed subject matter are explained below, and preferred modified embodiments of the invention are further described below. Explanations, particularly regarding advantages and definitions of features, are essentially descriptive and preferred, but not limiting, examples. If an explanation is limiting, this will be expressly stated.

[0006] The basic idea of ​​the present invention is therefore that the design of the bolt body as an element movable along a stroke movement eliminates the need for a screw connection arrangement, i.e. at least one or more screws, for fixing or clamping the rotary indexing table arrangement. To achieve this object, the invention particularly preferably provides instead that the rotary indexing table arrangement has a rotating means rotatable about a rotation axis with a centering opening and a receiving arrangement with a bolt arrangement, wherein the rotating means and the receiving arrangement can be mounted or connected to one another by means of a pressure bolt closure. For assembly, the rotating means is attached to the receiving arrangement from above in such a way that the bolt arrangement penetrates the centering opening.Furthermore, the receiving arrangement comprises an abutment means system with one or more abutment means, wherein at least one abutment means is movable radially to the rotation axis. The rotating means comprises an abutment system coaxial with the centering opening. In particular, the abutment means can have two states for interacting with the abutment system, namely a locked state and a ready state. Whether the abutment means is in the locked state or in the ready state can be adjusted, in particular, by a lifting movement of the bolt arrangement along the rotation axis.

[0007] Rotary indexing table arrangements are used in both machining in machine tools and in non-cutting automation.

[0008] Rotary indexing table arrangements vary depending on their application, both in terms of design and accuracy and rigidity. In machining, the requirements for accuracy and rigidity are higher than in non-machining applications. Automation requires the shortest indexing times. Short setup times, which are made possible by the invention, are also important.

[0009] The fact that the rotating means is detachably or non-detachably connected to the receiving arrangement relates in particular to the axial mobility of the rotating means relative to the receiving arrangement along the axis of rotation during operation of the rotary indexing table arrangement.

[0010] In particular, the abutment means can be arranged on a projection plane perpendicular to the axis of rotation, preferably with their centers forming a projection circle. This ensures the most even load distribution possible and reduces singular wear or evens out the wear of the components.

[0011] Furthermore, the abutment means can be designed as spherical bodies. By actuating, i.e., pressing, the bolt body, the abutment means can be unlocked or fixed, so that the rotating means is in the locked or ready state.

[0012] In particular, it is intended that after the bolt body is released, it is pushed upward again by the spring force of the spring system, and the abutment elements, such as balls, are pushed outward again by a tapered portion on the bolt body. This locks the rotary indexing table assembly and prevents the rotating element from being pulled upwards in an uncontrolled manner.

[0013] During locking, the abutment means, such as balls, press against a circumferential inclined arrangement, such as an edge or groove or grooves, of the rotating element. The transverse force introduced via the balls creates a locking effect on the rotating element, thereby securing it downward. One or more locking means are provided to prevent the rotating element from rotating.

[0014] The receiving arrangement thus has, for example, one or more balls as abutment means, which are pushed from the inside to the outside by the bolt body. The balls are to be arranged in a system of abutment means in corresponding recesses of a central arrangement.

[0015] Furthermore, one or more locking means, particularly in the form of sword pins, can be arranged on the receiving arrangement. This ensures that the rotating means cannot rotate uncontrollably relative to the receiving arrangement.

[0016] According to the invention, the bolt body of the bolt assembly penetrates the centering opening, with the bolt body of the bolt assembly and the centering opening being arranged, in particular, coaxially to one another. Centering accelerates assembly and, due to the precise application of the rotating means, reduces the risk of an offset connection between the rotating means and the receiving arrangement.

[0017] According to a preferred embodiment of the invention, the bolt body assumes the set-up state through an axial movement in the direction of the rotary indexing table arrangement, and the bolt body assumes the locked state through an axial movement counter to the direction of the rotary indexing table arrangement, with the spring system preferably pressing the bolt body into the locked state. In other words, the set-up state and locked state alternate through a lifting movement of the bolt body. This enables simple assembly with only a low risk of injury. Another significant advantage is that assembly is very quick and requires no wearing fasteners, such as screws.

[0018] According to a preferred embodiment of the invention, it is provided that the bolt body has at least two different outer diameters, wherein the first outer diameter remote from the rotary indexing table arrangement along the rotational axis is smaller than the second outer diameter pointing towards the rotary indexing table arrangement along the rotational axis, and in that the receiving arrangement has a system of abutment means with a central arrangement coaxial with the axis of rotation, which has one or more recesses around its circumference, wherein the recesses have a smaller diameter radially outwards towards the axis of rotation than in a radially inner section, and wherein one or more recesses each have at least one abutment means, wherein the abutment means are pressed radially outwards by the second outer diameter of the bolt body in the locked state of the bolt body and have radial play in the section of the first outer diameter of the bolt body in the set-up state of the bolt body. The components can be manufactured cost-effectively and also enable reliable and at the same time low-wear operation of the rotary indexing table arrangement. The abutment means can be designed in different ways, with spherical bodies being preferred. The bolt body therefore has at least two outer diameters.These two outer diameters can, for example, merge into one another via a conical connecting section. The abutment means can alternate between one outer diameter and the other, or between an outer diameter and the conical connecting section, between the locked state and the set-up state.

[0019] According to a preferred embodiment of the invention, the rotating means has a support system coaxial with the centering opening, which at least partially surrounds the bolt body. Such that, when the bolt body is in its locked state, one or more support means are pressed radially outward through the second outer diameter of the bolt body in such a way that they clamp with the support system of the rotating means and fix the rotating means. This is an easily adjustable, reliable, and low-wear system. The rotating means is clamped and thus secured against accidental release during operation, i.e., after setup is complete.

[0020] According to a preferred embodiment of the invention, the abutment system is designed as an at least partially, preferably completely, circumferential inclined arrangement. An inclined arrangement means that the abutment system extends radially larger along the axis of rotation, or radially smaller in the other direction of the axis of rotation.

[0021] According to a preferred embodiment of the invention, the one or more abutment means is / are designed as a spherical body. Spherical bodies have the advantage of being cost-effective to manufacture and also enable the lowest possible wear. Regular setup, i.e., switching between the setup state and the locked state, is thus unproblematic for the rotary indexing table arrangement. In particular, they reduce the risk of jamming.

[0022] According to a preferred embodiment of the invention, the receiving assembly comprises one or more locking means to prevent uncontrolled component rotation about the rotation axis. This ensures that the rotation means cannot rotate relative to the receiving assembly.

[0023] The invention will now be explained by way of example with reference to the accompanying drawings, using preferred embodiments. They show: Fig. 1 : a perspective view of a rotary indexing table arrangement according to a preferred embodiment of the invention, wherein a rotating means is shown removed from a receiving arrangement; Fig. 2 : the perspective view of the rotary indexing table arrangement according to Figure 1 , wherein the rotating means is shown connected to the receiving arrangement; Fig. 3 : a partial sectional view of the rotary indexing table arrangement according to Figure 2 ; Fig. 4: a sectional view of the recording arrangement according to Figure 3 ; Fig. 5 : a partially sectional view and partially perspective view of the receiving arrangement according to Figure 4 , embedded in the rotary indexing table arrangement; Fig. 6 : a sectional view of the rotary indexing table arrangement according to Figure 4 , embedded in the rotary indexing table arrangement; Fig. 7 : a perspective view of a rotary indexing table arrangement according to the prior art; and Fig. 8 : a sectional view of a rotary indexing table arrangement according to Figure 7 .

[0024] The Figures 1 and 2 show a perspective view of a rotary indexing table arrangement 10 with a rotation axis D, comprising a rotating means 12 rotatable about the rotation axis D with a centering opening 14 coaxial to the rotation axis D and a receiving arrangement 16 with a bolt arrangement 18. Figure 1 an exploded view and Figure 2a composite view. The exploded view can also be interpreted as a step during setup, i.e., after the rotating means 12 has been removed from the receiving arrangement 16 or before the rotating means 12 is placed on the receiving arrangement 16.

[0025] The bolt arrangement 18 has a bolt body 22 which is movable along the rotation axis D by means of a spring system 20 and which can be set into a ready state or a locked state in such a way that that the rotating means 12 is detachably connected to the receiving arrangement 16 in the set-up state, and that the rotating means 12 is non-detachably connected to the receiving arrangement 16 in the locked state. This is better seen in the Figures 3 to 6 .

[0026] Especially in Figure 3It is clearly visible that the bolt body 22 of the bolt arrangement 18 penetrates the centering opening 14, wherein the bolt body 22 of the bolt arrangement 18 and the centering opening 14 are arranged in particular coaxially to one another.

[0027] The centering opening 14 can be an integral part of the rotating means 12 or can be arranged on an element connectable to the rotating means 12. This must be determined on a type-specific basis.

[0028] It is preferably provided that the bolt body 22 assumes the set-up state by an axial movement in the direction of the rotary indexing table arrangement 10 and that the bolt body 22 assumes the locked state by an axial movement counter to the direction of the rotary indexing table arrangement 10, wherein the spring system 20 preferably presses the bolt body 22 into the locked state.

[0029] The lock state is set, for example, after Figure 2 and particularly recognizable in Figure 3 .

[0030] In contrast, the bolt body 22 is located Figure 1 in the ready state. This is clearly visible in the Figures 4 to 6 .

[0031] It is particularly preferred that the bolt body 22 has at least two different outer diameters, wherein the first outer diameter, which is remote from the rotary indexing table arrangement 10 along the rotational axis D, i.e. the upper outer diameter, is smaller than the second outer diameter, which is directed towards the rotary indexing table arrangement 10 along the rotational axis D, i.e. the lower outer diameter. This is clearly visible in particular in Figure 3 in the locked state or in Figure 4 in the ready state.

[0032] The receiving arrangement 16 has an abutment means system 24 with a central arrangement 26 which is coaxial with the axis of rotation D and which has one or more recesses 28 around its circumference, wherein the recesses 28 have a smaller diameter radially outwards to the axis of rotation D than in a radially inner section, and wherein one or more recesses 28 each have at least one abutment means 30.

[0033] According to Figure 3 In the locked state of the bolt body 22, the abutment means 30 are pressed radially outwards by the second outer diameter of the bolt body 22.

[0034] According to Figure 4In the setup state of the bolt body 22, the abutment means 30 have radial play in the section of the first outer diameter of the bolt body 22. Radial play is relative to a projection plane perpendicular to the rotation axis D or to a projection circle perpendicular to the rotation axis D. Along this projection circle, the abutment means 30 are at least partially movable in the setup state in a radial orientation relative to the rotation axis D.

[0035] Regardless of a specific embodiment, it can be provided that a taper is arranged between two outer diameters of the bolt body 22, preferably according to the aforementioned description, such that the abutment means 30 are pushed or pressed without tilting during a lifting movement of the bolt body 22. In particular, the taper can also encompass the second outer diameter.

[0036] In Figure 3It is clearly visible that the rotating means 12 has an abutment system 32 coaxial with the centering opening 14, which at least partially surrounds the bolt body 22, so that one or more abutment means 30 are pressed radially outwards through the second outer diameter of the bolt body 22 in the locked state of the bolt body 22 in such a way that they clamp with the abutment system 32 of the rotating means 12 and fix the rotating means 12.

[0037] As in Figure 3 optionally shown, the abutment system 32 is designed as an at least partially, preferably completely, circumferential inclined arrangement.

[0038] The Figures 2 , 3 and 6 disclose, by way of example, that the one or more abutment means 30 is or are designed as a spherical body.

[0039] Furthermore, it is preferred that the receiving arrangement 16 has one or more locking means 34 to prevent uncontrolled component rotation about the rotation axis D. Accordingly, the rotating means 12 has correlating receptacles 36 to abut the locking means 34.

[0040] The Figures 7 and 8 show previously known rotary indexing table arrangements. Figure 7 a perspective view and Figure 8A sectional view. Previously known rotary indexing table arrangements require a considerable amount of time to loosen and subsequently tighten screws when setting up a rotary indexing table arrangement. For this purpose, a respective rotating means 12 is usually screwed to a holding arrangement 16. This requires an additional tool. In more concrete terms, this means that the additional tool is used to convert the rotary indexing table arrangement in order to loosen or tighten one or more screws. On the one hand, this takes time to retrieve the tool from its storage location and carry out the corresponding assembly steps. On the other hand, the tool must be procured, at the associated cost, and then stored ready for use. List of reference symbols

[0041] 10 Rotary indexing table arrangement 12 Rotating means 14 Centering opening 16 Mounting arrangement 18 Bolt arrangement 20 Spring system 22 Bolt body 24 Abutment means system 26 Central arrangement 28 Recess 30 Abutment means 32 Abutment system 34 Locking means 36 Mounting DRotation axis

Claims

1. Rotary indexing table assembly (10) having an axis of rotation (D), comprising - a rotation means (12) that can be rotated about the axis of rotation (D), having a centring opening (14) coaxial with the axis of rotation (D); - a receiving assembly (16) having a pin assembly (18), wherein the pin assembly (18) comprises a pin body (22) that can be moved along the axis of rotation (D) by a spring system (20) and can be set in a set-up state or a blocking state such that in the set-up state the rotation means (12) is detachably connected to the receiving assembly (16), and such that in the blocking state the rotation means (12) is non-detachably connected to the receiving assembly (16), and such that the pin body (22) of the pin assembly (18) penetrates the centring opening (14), wherein the pin body (22) of the pin assembly (18) and the centring opening (14) are arranged in particular coaxially with respect to one another.

2. The rotary indexing table assembly (10) according to claim 1, characterised in that the pin body (22) enters the set-up state by means of an axial movement in the direction of the rotary indexing table assembly (10) and in that the pin body (22) enters the blocking state by means of an axial movement in the opposite direction to the rotary indexing table assembly (10), wherein the spring system (20) preferably presses the pin body (22) into the blocking state.

3. The rotary indexing table assembly (10) according to at least one of the preceding claims, characterised in that the pin body (22) comprises at least two different outer diameters, wherein the first outer diameter away from the rotary indexing table assembly (10) along the axis of rotation (D) is smaller than the second outer diameter facing the rotary indexing table assembly (10) along the axis of rotation (D), and in that the receiving assembly (16) comprises an abutment means system (24) having a central assembly (26) coaxial with the axis of rotation (D), which comprises one or more recesses (28) around its circumference, wherein the recesses (28) have a smaller cross section radially outwards with respect to the axis of rotation (D) than in a radially inner portion, and wherein one or more recesses (28) each comprise at least one abutment means (30), wherein in the blocking state of the pin body (22) the abutment means (30) are pressed radially outwards by means of the second outer diameter of the pin body (22) and in the set-up state of the pin body (22) they have radial play in the portion of the first outer diameter of the pin body (22).

4. The rotary indexing table assembly (10) according to claim 3, characterised in that the rotation means (12) comprises an abutment means system (32) coaxial with the centring opening (14), which at least partially surrounds the pin body (22), such that in the blocking state of the pin body (22) one or more abutment means (30) are pressed radially outwards by means of the second outer diameter of the pin body (22) such that they brace with the abutment means system (32) of the rotation means (12) and fix the rotation means (12) in place.

5. The rotary indexing table assembly (10) according to claim 4, characterised in that the abutment means system (32) is designed as an at least partially, preferably fully, circumferential inclined arrangement.

6. The rotary indexing table assembly (10) according to any one of claims 3 to 5, characterised in that the one or more abutment means (30) is or are designed as spherical bodies.

7. The rotary indexing table assembly (10) according to any one of the preceding claims, characterised in that the receiving assembly (16) comprises one or more locking means (34) to prevent uncontrolled rotation of components about the axis of rotation (D).