Self-locking structure of rotary table

Abstract

The utility model discloses a self-locking structure of a rotary table, the rotary table comprises a base and a cradle, the cradle is provided with a horizontal rotating shaft, the base is provided with a horizontal hole part for accommodating the horizontal rotating shaft, the self-locking structure is arranged between the horizontal hole part and the horizontal rotating shaft, the self-locking structure comprises a brake part, a sliding part and a reset part, and the brake part is fixed on the horizontal rotating shaft. The sliding part can move along the axis of the horizontal rotating shaft, the reset part is used for driving the sliding part to abut against the braking part so that the sliding part, the braking part and the horizontal rotating shaft can be static, a separation cavity is formed between the sliding part and the horizontal hole part, the separation cavity communicates with an external air source or liquid source, and when the separation cavity is full, the separation cavity drives the sliding part to be separated from the braking part. According to the self-locking structure of the rotary table, self-locking of the rotary table can be achieved, and a cradle is prevented from falling off due to sudden power failure in the climbing or descending process.

Description

Technical Field

[0001] The utility model relates to a turntable structure, in particular to a self-locking structure of the turntable. Background Art

[0002] The turntable is a commonly used auxiliary structure of a machine tool, which can rotate the workpiece so that the state of the workpiece meets the machining requirements.

[0003] Structurally, a turntable usually includes a base mounted on a machine tool worktable and a cradle rotatably connected to the base, and the cradle can be turned over.

[0004] However, when the cradle is in the process of climbing or descending, if the machine tool suddenly loses power, the cradle is easy to fall. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a self-locking structure of a turntable, which can realize the self-locking of the turntable and prevent the cradle from falling due to sudden power failure during the process of climbing or descending.

[0006] According to a self-locking structure of a turntable in an embodiment of the utility model, the turntable includes a base and a cradle, the cradle has a horizontal rotating shaft, the base has a horizontal hole portion for accommodating the horizontal rotating shaft, the self-locking structure is arranged between the horizontal hole portion and the horizontal rotating shaft, the self-locking structure includes a brake, a sliding member and a reset member, the brake is fixed to the horizontal rotating shaft, the sliding member can move along the axis of the horizontal rotating shaft, the reset member is used to drive the sliding member to abut against the brake member so that the sliding member, the brake member and the horizontal rotating shaft are stationary, a separation chamber is formed between the sliding member and the horizontal hole portion, the separation chamber is connected to an external gas source or a liquid source, and when the separation chamber is filled, the separation chamber drives the sliding member to disengage from the brake member.

[0007] According to a self-locking structure of a turntable in an embodiment of the utility model, the sliding part includes a sliding ring, the horizontal hole portion is provided with a fixing ring, the fixing ring and the sliding ring are overlapped and sealed on a side close to the horizontal rotating shaft, and the fixing ring and the sliding ring are used to cooperate with the horizontal hole portion to form the separation chamber.

[0008] According to a self-locking structure of a turntable of an embodiment of the utility model, the fixed ring and the sliding ring are overlapped and sealed on the side close to the horizontal rotating shaft, and the fixed ring and the sliding ring are used to cooperate with the horizontal hole portion to form the separation chamber, including: the sliding ring has a convex ring, an outer ring portion located on the inner side of the convex ring, and an inner ring portion located on the inner side of the convex ring, the convex ring is located on the side of the fixed ring close to the horizontal rotating shaft, a sealing ring is arranged between the outer surface of the convex ring and the inner surface of the fixed ring, and the outer ring portion is used to form the separation chamber.

[0009] According to a self-locking structure of a turntable in an embodiment of the utility model, the end surface of the inner ring portion is used to abut against the braking member along the axial direction of the horizontal rotating shaft to achieve self-locking.

[0010] According to a self-locking structure of a turntable in an embodiment of the utility model, the horizontal hole portion is provided with a fixing ring, including: the horizontal hole portion includes a countersunk position, the fixing ring is provided at the connection between the large diameter section and the small diameter section of the countersunk position, and the sliding ring is provided at the small diameter section of the countersunk position.

[0011] According to a self-locking structure of a turntable in an embodiment of the utility model, the horizontal hole portion is provided with a fixing sleeve, and the fixing sleeve is located on a side of the fixing ring facing away from the sliding ring.

[0012] According to a self-locking structure of a turntable in an embodiment of the utility model, the braking member includes a braking ring, the braking ring is sleeved on the horizontal rotating shaft, and the braking ring is located on the inner side of the fixing ring.

[0013] According to a self-locking structure of a turntable of an embodiment of the utility model, the reset member includes an outer ring, a plurality of reset arms connected to the inner side of the outer ring, the plurality of reset arms are connected to the fixed ring and one of the sliding rings, and the outer ring is connected to the fixed ring and the other of the sliding rings, or the reset member includes an inner ring, a plurality of reset arms connected to the outer side of the inner ring, the plurality of reset arms are connected to the fixed ring and one of the sliding rings, and the inner ring is connected to the fixed ring and the other of the sliding rings.

[0014] According to a self-locking structure of a turntable in an embodiment of the utility model, the end face of one of the fixed ring and the sliding ring is provided with an end face ring groove or an annular step for connecting the reset member, and the other of the fixed ring and the sliding ring is provided with a radial ring groove for connecting the reset member.

[0015] According to a self-locking structure of a turntable of an embodiment of the utility model, the braking member includes a base ring and an elastic ring arranged coaxially, the base ring is installed on the horizontal rotating shaft, the elastic ring is installed on the base ring, and the elastic ring is used to abut against the sliding member.

[0016] A self-locking structure of a turntable according to an embodiment of the utility model has at least the following beneficial effects:

[0017] The utility model sets a separation chamber, so when the machine tool is not powered off, the compressed gas or liquid in the separation chamber will push the sliding member to keep the sliding member away from the braking member, without hindering the braking member from rotating together with the horizontal shaft and without affecting the flipping of the cradle, such as flipping to climb or flipping to descend.

[0018] However, when the machine tool suddenly loses power, the compressed gas and liquid cannot maintain the original pressure. Therefore, under the action of the reset part, the sliding part approaches the braking part. At the same time, the gas or liquid in the separation chamber will be discharged outside the separation chamber. Due to the contact and friction between the sliding part and the braking part, the rotation of the braking part and the horizontal rotating shaft can be suppressed to achieve self-locking.

[0019] At the same time, since the self-locking structure is arranged between the horizontal rotating shaft and the horizontal hole portion, it does not occupy the external space of the turntable, reduces the occupied space, and has a simple and compact structure.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of a turntable according to an embodiment of the utility model;

[0023] Figure 2 for Figure 1 Structural schematic diagram of the self-locking structure of the turntable.

[0024] Figure markings: 1-cradle, 2-base, 3-horizontal rotating shaft, 4-horizontal hole portion, 5-brake member, 6-sliding member, 7-resetting member, 8-separation chamber, 9-convex ring, 10-outer ring portion, 11-inner ring portion, 12-fixing sleeve, 13-end face ring groove, 14-radial ring groove, 15-base ring, 16-elastic ring, 17-fixing ring, 18-air inlet. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] A self-locking structure of a turntable according to an embodiment of the utility model is described below in conjunction with the accompanying drawings.

[0030] Reference Figure 1 , the utility model aims to provide an embodiment of a turntable.

[0031] Structurally, the turntable includes a base 2 and a cradle 1 . The cradle 1 has a horizontal rotation axis 3 , and the base 2 has a horizontal hole 4 for accommodating the horizontal rotation axis 3 .

[0032] In some specific embodiments of the present invention, a self-rotating part can be provided on the cradle 1, so that multi-directional adjustment of the product can be achieved through compound rotation, thereby improving the processing capacity of the machine tool.

[0033] Reference Figure 1 and Figure 2 The utility model also aims to provide an embodiment of the self-locking structure of a turntable.

[0034] In this embodiment, the self-locking structure of the turntable can realize the self-locking of the turntable, thereby preventing the cradle 1 from falling due to a sudden power outage during the process of climbing or descending.

[0035] Specifically, the self-locking structure is arranged between the horizontal hole portion 4 and the horizontal rotating shaft 3, and the self-locking structure includes a brake 5, a sliding member 6 and a reset member 7. The brake 5 is fixed to the horizontal rotating shaft 3, and the sliding member 6 can move along the axis of the horizontal rotating shaft 3. The reset member 7 is used to drive the sliding member 6 to abut against the brake 5 so that the sliding member 6, the brake 5 and the horizontal rotating shaft 3 are stationary. A separation chamber 8 is formed between the sliding member 6 and the horizontal hole portion 4, and the separation chamber 8 is connected to an external gas source or liquid source. When the separation chamber 8 is filled, the separation chamber 8 drives the sliding member 6 to disengage from the brake 5.

[0036] It is easy to understand that in this embodiment, the separation chamber 8 is provided. Therefore, when the machine tool is not powered off, the compressed gas or liquid in the separation chamber 8 will push the sliding member 6, so that the sliding member 6 moves away from the braking member 5, and will not hinder the braking member 5 and the horizontal rotating shaft 3 from rotating together, and will not affect the flipping of the cradle 1, such as flipping to climb or flipping to descend.

[0037] When the machine tool suddenly loses power, the compressed gas and liquid cannot maintain the original pressure. Therefore, under the action of the reset member 7, the sliding member 6 approaches the braking member 5. At the same time, the gas or liquid in the separation chamber 8 will be discharged outside the separation chamber 8. Due to the contact and friction between the sliding member 6 and the braking member 5, the rotation of the braking member 5 and the horizontal rotating shaft 3 can be suppressed to achieve self-locking.

[0038] At the same time, since the self-locking structure is arranged between the horizontal rotating shaft 3 and the horizontal hole portion 4, it does not occupy the external space of the turntable, reduces the occupied space, and has a simple and compact structure.

[0039] In some specific embodiments of the present invention, the base 2 may be provided with an air inlet 18 to facilitate the use of compressed air to achieve a self-locking arrangement.

[0040] In some specific embodiments of the present invention, the sliding member 6 can include a sliding ring, and the horizontal hole portion 4 is provided with a fixed ring 17. The fixed ring 17 and the sliding ring are overlapped and sealed on the side close to the horizontal rotating shaft 3. The fixed ring 17 and the sliding ring are used to cooperate with the horizontal hole portion 4 to form a separation chamber 8.

[0041] It is easy to understand that, by setting the fixed ring 17, the separation chamber 8 can be easily formed between the fixed ring 17 and the sliding ring in this embodiment. At the same time, by moving the sliding ring and the fixed ring 17 closer or farther away, the size of the separation chamber 8 can be changed, thereby reducing the difficulty of setting the separation chamber 8.

[0042] At the same time, the fixed ring 17 and the sliding ring overlap on the side close to the horizontal rotating shaft 3, which can also maintain the sealing of the separation chamber 8 and prevent the separation chamber 8 from leaking compressed gas or liquid.

[0043] In some specific embodiments of the present invention, the fixed ring 17 and the sliding ring can be overlapped and sealed on the side close to the horizontal rotating shaft 3, and the fixed ring 17 and the sliding ring are used to cooperate with the horizontal hole portion 4 to form a separation chamber 8, including: the sliding ring has a convex ring 9, an outer ring portion 10 located on the inner side of the convex ring 9, and an inner ring portion 11 located on the inner side of the convex ring 9, the convex ring 9 is located on the side of the fixed ring 17 close to the horizontal rotating shaft 3, a sealing ring is arranged between the outer surface of the convex ring 9 and the inner surface of the fixed ring 17, and the outer ring portion 10 is used to form the separation chamber 8.

[0044] It is easy to understand that in this embodiment, the sliding ring has a convex ring 9, which facilitates the overlap of the fixed ring 17 and the sliding ring. At the same time, by providing the outer ring portion 10, the separation chamber 8 can have a larger volume without increasing the distance between the sliding ring and the fixed ring 17 due to volume reasons.

[0045] In some specific embodiments of the present invention, the end surface of the inner ring portion 11 can be used to abut against the brake member 5 along the axial direction of the horizontal rotation shaft 3 to achieve self-locking.

[0046] It is easy to understand that in this embodiment, by providing the inner ring portion 11, the end surface of the inner ring portion 11 is used to abut the brake member 5, which can simplify the contact structure between the sliding ring and the brake member 5, and at the same time ensure that the sliding ring has a larger area to contact the brake member 5, thereby improving the self-locking ability.

[0047] In some specific embodiments of the present invention, the horizontal hole portion 4 can be provided with a fixing ring 17, including: the horizontal hole portion 4 includes a countersunk position, a fixing ring 17 is provided at the connection between the large diameter section and the small diameter section of the countersunk position, and a sliding ring is provided at the small diameter section of the countersunk position.

[0048] It is easy to understand that the present embodiment can conveniently install the fixing ring 17 by setting the countersunk position, thereby reducing the difficulty of setting the fixing ring 17. At the same time, it is convenient to use the fixing ring 17 and the small diameter section of the countersunk position to complete the sealing of the separation chamber 8, facilitate the limitation of the sliding part 6, and reduce the difficulty of manufacturing and layout.

[0049] In some specific embodiments of the present invention, the horizontal hole portion 4 may be provided with a fixing sleeve 12 , and the fixing sleeve 12 is located on the side of the fixing ring 17 facing away from the sliding ring.

[0050] It is easy to understand that, in this embodiment, by providing the fixing sleeve 12 , it is possible to support the entity forming the horizontal hole portion 4 , thereby improving the strength of the base 2 and reducing the bending of the horizontal rotation shaft 3 .

[0051] In some specific embodiments of the present invention, the brake member 5 may include a brake ring, which is sleeved on the horizontal shaft 3 and located on the inner side of the fixed ring 17 .

[0052] It is easy to understand that in this embodiment, the brake member 5 has a brake ring, and the brake ring is located on the inner side of the fixed ring 17. On the one hand, it is convenient for the end face of the brake ring to contact the end face of the inner ring part 11 to ensure reliable and effective self-locking. On the other hand, it makes the fixed ring 17 and the brake ring overlap in the radial direction of the horizontal rotating shaft 3, reducing the space occupied by the self-locking structure in the axial direction of the horizontal rotating shaft 3, making the self-locking structure more compact and occupying less space.

[0053] In some specific embodiments of the present invention, sealing rings or sealing rings can be arranged between the fixed sleeve 12 and the horizontal hole portion 4, between the fixed ring 17 and the horizontal hole portion 4, between the sliding ring and the horizontal hole portion 4, and between the fixed ring 17 and the sliding ring, so as to meet the needs of internal and external separation sealing and ensure the sealing of the separation chamber 8.

[0054] In some specific embodiments of the present invention, the reset member 7 may include an outer ring, a plurality of reset arms connected to the inner side of the outer ring, the plurality of reset arms connecting the fixed ring 17 and one of the sliding rings, and the outer ring connecting the fixed ring 17 and the other of the sliding rings.

[0055] In some specific embodiments of the present invention, the reset member 7 may include an inner ring, a plurality of reset arms connected to the outer side of the inner ring, the plurality of reset arms connecting the fixed ring 17 and one of the sliding rings, and the inner ring connecting the fixed ring 17 and the other of the sliding rings.

[0056] It is easy to understand that in this embodiment, the reset member 7 includes a reset arm, an inner ring or an outer ring, so that the elastic reset member 7 can be arranged in a limited space. At the same time, due to the large number of reset arms, a large force can be generated to quickly drive the sliding ring close to the brake member 5, thereby quickly self-locking and preventing the cradle 1 from falling.

[0057] At the same time, combined with the overlapping of the sliding ring and the fixed ring 17, as shown in FIG. Figure 2 As shown, since the sliding ring has the convex ring 9, it is convenient to use the reset member 7 with an outer ring, and the reset arm is clamped into the ring groove outside the convex ring 9, which is convenient for installation.

[0058] The above-mentioned setting of the reset member 7 can be replaced or selected as needed to improve the versatility.

[0059] In some specific embodiments of the present invention, the end face of one of the fixed ring 17 and the sliding ring can be provided with an end face annular groove 13 or annular step for connecting the reset member 7, and the other of the fixed ring 17 and the sliding ring can be provided with a radial annular groove 14 for connecting the reset member 7.

[0060] It is easy to understand that this embodiment provides an end face annular groove 13 or an annular step to facilitate the connection of the inner ring or outer ring to fix the reset member 7, and facilitates the setting of a snap-on reset arm by providing a radial annular groove 14, thereby simplifying installation and connection and facilitating production and manufacturing.

[0061] In some specific embodiments of the present invention, the brake member 5 may include a coaxially arranged base ring 15 and an elastic ring 16 , wherein the base ring 15 is mounted on the horizontal rotating shaft 3 , the elastic ring 16 is mounted on the base ring 15 , and the elastic ring 16 is used to abut against the sliding member 6 .

[0062] It is easy to understand that, in this embodiment, by providing the brake member 5 with the base ring 15 and the elastic ring 16 , it is also convenient to keep the sliding ring in contact with the brake member 5 , thereby improving the reliability of self-locking and preventing the brake member 5 from being worn and causing the self-locking to fail.

[0063] In some specific embodiments of the present invention, the elastic ring 16 can be configured with reference to the reset member 7 to increase the strength and deformation range of the elastic ring 16 .

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A self-locking structure of a turntable, the turntable comprising a base (2) and a cradle (1), the cradle (1) having a horizontal rotation axis (3), the base (2) having a horizontal hole (4) for accommodating the horizontal rotation axis (3), characterized in that: The self-locking structure is arranged between the horizontal hole portion (4) and the horizontal rotating shaft (3), and the self-locking structure includes a brake member (5), a sliding member (6) and a reset member (7). The brake member (5) is fixed to the horizontal rotating shaft (3), and the sliding member (6) can move along the axis of the horizontal rotating shaft (3). The reset member (7) is used to drive the sliding member (6) to abut against the brake member (5) so that the sliding member (6), the brake member (5) and the horizontal rotating shaft (3) are stationary. A separation chamber (8) is formed between the sliding member (6) and the horizontal hole portion (4), and the separation chamber (8) is connected to an external gas source or liquid source. When the separation chamber (8) is filled, the separation chamber (8) drives the sliding member (6) to disengage from the brake member (5).

2. The self-locking structure of a turntable according to claim 1, characterized in that: The sliding member (6) includes a sliding ring, and the horizontal hole portion (4) is provided with a fixing ring (17). The fixing ring (17) and the sliding ring are overlapped and sealed on a side close to the horizontal rotating shaft (3). The fixing ring (17) and the sliding ring are used to cooperate with the horizontal hole portion (4) to form the separation chamber (8).

3. The self-locking structure of a turntable according to claim 2, characterized in that: The fixed ring (17) and the sliding ring are overlapped and sealed on the side close to the horizontal rotating shaft (3); the fixed ring (17) and the sliding ring are used to cooperate with the horizontal hole portion (4) to form the separation chamber (8), including: the sliding ring has a convex ring (9), an outer ring portion (10) located on the inner side of the convex ring (9), and an inner ring portion (11) located on the inner side of the convex ring (9); the convex ring (9) is located on the side of the fixed ring (17) close to the horizontal rotating shaft (3); a sealing ring is arranged between the outer surface of the convex ring (9) and the inner surface of the fixed ring (17); the outer ring portion (10) is used to form the separation chamber (8).

4. The self-locking structure of a turntable according to claim 3, characterized in that: The end surface of the inner ring portion (11) is used to abut against the braking member (5) along the axial direction of the horizontal rotating shaft (3) to achieve self-locking.

5. The self-locking structure of a turntable according to claim 2, characterized in that: The horizontal hole portion (4) is provided with a fixing ring (17), comprising: the horizontal hole portion (4) comprises a countersink position, the fixing ring (17) is provided at the connection between the large diameter section and the small diameter section of the countersink position, and the sliding ring is provided at the small diameter section of the countersink position.

6. The self-locking structure of a turntable according to claim 2, characterized in that: The horizontal hole portion (4) is provided with a fixing sleeve (12), and the fixing sleeve (12) is located on the side of the fixing ring (17) facing away from the sliding ring.

7. A self-locking structure of a turntable according to any one of claims 2 to 6, characterized in that: The braking member (5) comprises a braking ring, which is sleeved on the horizontal rotating shaft (3) and is located on the inner side of the fixing ring (17).

8. A self-locking structure of a turntable according to any one of claims 2 to 6, characterized in that: The reset member (7) comprises an outer ring, a plurality of reset arms connected to the inner side of the outer ring, the plurality of reset arms connecting the fixed ring (17) and one of the sliding rings, and the outer ring connecting the fixed ring (17) and the other of the sliding rings; or, the reset member (7) comprises an inner ring, a plurality of reset arms connected to the outer side of the inner ring, the plurality of reset arms connecting the fixed ring (17) and one of the sliding rings, and the inner ring connecting the fixed ring (17) and the other of the sliding rings.

9. The self-locking structure of a turntable according to claim 2, characterized in that: The end face of one of the fixed ring (17) and the sliding ring is provided with an end face annular groove (13) or annular step for connecting to the reset member (7), and the other of the fixed ring (17) and the sliding ring is provided with a radial annular groove (14) for connecting to the reset member (7).

10. The self-locking structure of a turntable according to claim 1, characterized in that: The brake member (5) comprises a base ring (15) and an elastic ring (16) which are coaxially arranged, wherein the base ring (15) is mounted on the horizontal rotating shaft (3), and the elastic ring (16) is mounted on the base ring (15), and the elastic ring (16) is used for abutting against the sliding member (6).

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