Gas-liquid delivery slip ring structure, swing single-arm AC milling head, machine tool

Abstract

The utility model provides a kind of gas-liquid delivery slip ring structure, swing single-arm AC milling head, machine tool, wherein gas-liquid delivery slip ring structure, including rotating shaft module and external, slip ring assembly includes rotating core body and outer sleeve, rotating core body and outer sleeve can be fixedly connected with the first end of rotating shaft module, the inner cylinder wall surface of outer sleeve is formed with multiple annular grooves being spaced apart along its axial direction, when outer sleeve is sleeved on rotating core body, each annular groove and the outer circular wall surface of rotating core body jointly form multiple annular distribution cavities, multiple lead-out flow channels are formed in rotating core body, each lead-out flow channel and each annular distribution cavity are respectively one-to-one correspondence and outlet is respectively connected with the lead-out pipe that can be controlled communication with the functional component of rotating shaft module corresponding, multiple lead-in flow channels are formed in outer sleeve, each lead-in flow channel and each annular distribution cavity are respectively one-to-one correspondence and inlet is used for being communicated with fluid source.The utility model is more convenient when assembling and disassembling and maintaining, and maintenance cost is lower.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool design technology, specifically relating to a gas-liquid conveying slip ring structure, a swing-type single-arm AC milling head, and a machine tool. Background Technology

[0002] As the manufacturing industry increasingly demands higher processing efficiency, precision, and flexibility, traditional rotary milling heads have gradually revealed problems such as limited processing range, frequent tool changes, and large space occupation. To address these issues, the oscillating single-arm AC milling head has emerged as an innovative solution. By introducing an oscillating mechanism, the oscillating single-arm AC milling head allows the spindle to oscillate within a certain angle range, combining the spindle's rotational motion with oscillating motion to achieve multi-angle and multi-face machining, significantly improving processing flexibility and efficiency. The oscillating single-arm AC milling head performs exceptionally well in machining complex curved surfaces and multi-angle parts, and is particularly suitable for machining small batches of complex parts requiring high efficiency and precision. It is widely used in mold manufacturing, automotive parts processing, and aerospace parts processing.

[0003] The milling head contains a large number of pipes for transporting gas or liquid. During the rotation of the milling head, the pipes will twist along with the milling head, which poses a risk of them falling off or breaking, resulting in gas or liquid leakage and damage to the milling head. Therefore, it is urgent to reduce the twisting of the pipes and improve the life of the milling head.

[0004] Patent CN 216990072 U discloses a gas-liquid transmission device for a dual-swivel milling head. It utilizes rotary distributors with multiple gas-liquid transmission channels within the C-axis and A-axis modules, connected to the first and second transmission channels inside the milling head, to output gas or liquid, thus avoiding damage to the gas-liquid conduits. However, this technical solution uses separate rotary distributors for the C-axis and A-axis modules, resulting in a complex milling head structure design and high manufacturing costs. Furthermore, since each rotary distributor is located within its respective module, installation, removal, and maintenance are difficult and costly. Utility Model Content

[0005] Therefore, this utility model provides a gas-liquid conveying slip ring structure, a swing-type single-arm AC milling head, and a machine tool, which can overcome the shortcomings of related technologies that set up corresponding rotating distribution disks in the C-axis module and A-axis module to convey gas and liquid, which are difficult to load, unload, and maintain, and have high maintenance costs.

[0006] To address the aforementioned problems, this utility model provides a gas-liquid conveying slip ring structure, including a rotating shaft module and a slip ring assembly disposed outside the rotating shaft module. The slip ring assembly includes a rotating core and an outer sleeve fitted onto the radially outer peripheral wall of the rotating core. The rotating core can be fixedly connected to a first end of a rotating shaft in the rotating shaft module, and the outer sleeve can be fixedly connected to a first end of a stator housing in the rotating shaft module. The first end of the rotating shaft and the first end of the stator housing both correspond to the same end of the rotating shaft module. A plurality of axially spaced axially spaced axially spaced axially spaced axially on the inner wall of the outer sleeve. The annular grooves, when the outer sleeve is fitted onto the rotating core, together with the outer circular wall of the rotating core, form multiple annular distribution cavities. Multiple outlet channels are formed inside the rotating core. The inlet end of each outlet channel is connected to each annular distribution cavity in a corresponding manner. The outlet of each outlet channel is connected to an outlet pipe that can be controllably connected to the functional components of the rotating shaft module. Multiple inlet channels are formed inside the outer sleeve. The outlet end of each inlet channel is connected to each annular distribution cavity in a corresponding manner. The inlet of each inlet channel is used to connect to a fluid source.

[0007] In some embodiments, a plurality of sealing rings are clamped between the rotating core and the outer sleeve, and each of the sealing rings is spaced apart along the axial direction of the rotating core and located on both sides of each of the annular distribution cavities.

[0008] In some embodiments, the sealing ring is a Glyd ring.

[0009] In some embodiments, a bushing ring is provided between the two ends of the rotating core and the outer sleeve, and the bushing ring has a self-lubricating function.

[0010] In some embodiments, the bushing ring is a copper ring.

[0011] In some embodiments, the outer sleeve has a first flange extending radially outward at one end near the shaft module, the first flange being fixedly connected to a first end face of the stator housing via a plurality of first support rods, and the rotating core has a second flange extending radially outward at one end near the shaft module, the second flange being fixedly connected to a first end face of the shaft via a plurality of second support rods.

[0012] In some embodiments, the two ends of the first support rod are threaded to the first flange and the stator housing, respectively, and one end of the second support rod is threaded to the rotating shaft, while the other end is inserted into the second flange.

[0013] In some embodiments, each of the outlets is formed on the second flange, and each of the inlets is formed on the first flange; and / or, the first flange and the outer sleeve are separate assembly structures.

[0014] This utility model also provides a swing-type single-arm AC milling head, including a spindle module, an A-axis module and a C-axis module, and also includes the above-mentioned gas-liquid conveying slip ring structure. The rotating shaft module is one of the spindle module, the A-axis module and the C-axis module, and the gas-liquid conveying slip ring structure can simultaneously provide gas and liquid to the spindle module, the A-axis module and the C-axis module.

[0015] This utility model also provides a machine tool, including the above-mentioned swing-type single-arm AC milling head.

[0016] The gas-liquid conveying slip ring structure, the swing-type single-arm AC milling head, and the machine tool provided by this utility model have the following beneficial effects: The slip ring assembly is assembled outside the rotating shaft module, that is, it is placed outside the rotating shaft module. Compared with the existing gas-liquid distribution structure built into the rotating shaft module, the external slip ring structure of this utility model is more convenient to install, remove and maintain, and has lower maintenance costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the internal structure of the gas-liquid conveying slip ring structure in an embodiment of this utility model; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 yes Figure 1 A magnified view of a section at point B.

[0019] The attached figures are labeled as follows: 1. Rotating shaft module; 11. Rotating shaft; 12. Stator housing; 21. Rotating core; 211. Outlet channel; 2111. Outlet; 212. Second flange; 22. Outer sleeve; 221. Annular groove; 222. Inlet channel; 2221. Inlet; 223. First flange; 23. Sealing ring; 24. Bushing ring; 30. Flat opening; 31. First support rod; 32. Second support rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0022] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90° or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0023] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0024] See also Figures 1 to 3As shown in the figure, according to an embodiment of the present invention, a gas-liquid conveying slip ring structure is provided, including a rotating shaft module 1 and a slip ring assembly (not indicated in the figure) disposed outside the rotating shaft module 1. The slip ring assembly includes a rotating core 21 and an outer sleeve 22 fitted onto the radial outer peripheral wall of the rotating core 21. The rotating core 21 can be fixedly connected to the first end of the rotating shaft 11 of the rotating shaft module 1, and the outer sleeve 22 can be fixedly connected to the first end of the stator housing 12 of the rotating shaft module 1, that is, the external design of the slip ring assembly is realized. The first end of the rotating shaft 11 and the first end of the stator housing 12 both correspond to the same end of the rotating shaft module 1 (e.g., Figure 1 (As shown at the top of the indicated position), the inner wall of the outer sleeve 22 has multiple annular grooves 221 spaced apart along its axial direction. The depth and width of each annular groove 221 can be the same or different according to actual needs. When the outer sleeve 22 is fitted onto the rotating core 21, each annular groove 221 and the outer circular wall of the rotating core 21 together form multiple annular distribution cavities (not indicated in the figure). Multiple outflow channels 211 are formed inside the rotating core 21. The inlet end of each outflow channel 211 is connected to each annular distribution cavity in a corresponding manner. The outlet 2111 of each outflow channel 211 is connected to a device that can connect to the rotating shaft. The functional components of module 1 correspond to controllable and interconnected outlet pipes (not shown in the figure). Multiple inlet channels 222 are formed inside the outer sleeve 22. The outlet end of each inlet channel 222 is connected to each of the annular distribution cavities. The inlet 2221 of each inlet channel 222 is used to connect to a fluid source. The fluid source can be, for example, a pressurized air source to form an air seal in the corresponding area of ​​the rotating shaft module, or a hydraulic oil source to provide pressurized oil to the hydraulic actuators (e.g., clamping brake positioning structure) in the rotating shaft module, or a coolant source to provide efficient heat dissipation and cooling to the heat-generating components such as the torque motor in the rotating shaft module.

[0025] In this technical solution, the slip ring assembly is assembled outside the rotating shaft module 1, that is, it is externally placed in the rotating shaft module 1. Compared with the existing gas-liquid distribution structure built into the rotating shaft module, the external slip ring structure of this utility model is more convenient to install, remove and maintain, and has lower maintenance costs.

[0026] In some embodiments, the aforementioned outer sleeve 22 is an integrated structure to prevent the complex assembly and high risk of leakage caused by multi-segment splicing.

[0027] It should be noted that the annular distribution cavity can deliver the corresponding gas-liquid fluid to the target functional component through the aforementioned outlet channel 211, regardless of the rotation angle of the rotating core 21, making the structure very convenient.

[0028] In some embodiments, a plurality of sealing rings 23 are sandwiched between the rotating core 21 and the outer sleeve 22, and each of the sealing rings 23 is spaced apart along the axial direction of the rotating core 21 and located on both sides of each of the annular distribution cavities.

[0029] In this technical solution, sealing rings 23 are set on both sides of each annular distribution cavity, which can effectively prevent fluid leakage in each annular distribution cavity and ensure stable and reliable operation of the equipment.

[0030] In some embodiments, the sealing ring 23 is a Glyd ring, which not only meets the sealing requirements but also has high wear resistance, significantly improving the reliability of the slip ring structure.

[0031] In some embodiments, a bushing ring 24 is provided between the two ends of the rotating core 21 and the outer sleeve 22, and the bushing ring 24 has a self-lubricating function.

[0032] In this technical solution, bushing rings 24 with self-lubricating function are provided at both ends of the rotating core 21 to stabilize the gap between the rotating core 21 and the outer sleeve 22 and prevent damage to the sealing ring 23 between them.

[0033] In some embodiments, the bushing ring 24 is a copper ring. Using a copper ring not only achieves self-lubricating rotational support but also has high mechanical rigidity, which can improve the reliability of the slip ring structure.

[0034] In some embodiments, the outer sleeve 22 has a first flange 223 extending radially outward at one end near the rotating shaft module 1, the first flange 223 being fixedly connected to the first end face of the stator housing 12 via a plurality of first support rods 31, and the rotating core 21 has a second flange 212 extending radially outward at one end near the rotating shaft module 1, the second flange 212 being fixedly connected to the first end face of the rotating shaft 11 via a plurality of second support rods 32.

[0035] In this technical solution, multiple first support rods 31 and second support rods 32 are used to fix the outer sleeve 22 and the stator housing 12 and the rotating core 21 and the rotating shaft 11, respectively. This can form a space that increases in axial direction along the rotating shaft 11 between the outer sleeve 22 and the stator housing 12 and between the rotating core 21 and the rotating shaft 11. This space is used as the operating space for connecting each outlet 2111 with the external connector and the lead-out pipe, which greatly facilitates the assembly process of the operator.

[0036] In one specific embodiment, three of the aforementioned first support rods 31 and three of the second support rods 32 are provided. The three first support rods 31 are evenly spaced around the rotation axis of the rotating shaft 11, and the three second support rods 32 are evenly spaced around the rotation axis of the rotating shaft 11. An operation space for loading and unloading the outlet pipe is formed between two adjacent first support rods 31 and second support rods 32.

[0037] In some embodiments, both ends of the first support rod 31 are threadedly connected to the first flange 223 and the stator housing 12, respectively, to ensure that the outer sleeve 22 and the stator housing 12 can be connected. Correspondingly, one end of the second support rod 32 is threadedly connected to the rotating shaft 11, and the other end is inserted into the second flange 212. By adjusting the thread fit depth between the second support rod 32 and the rotating shaft 11, each second support rod 32 can be leveled, which facilitates the assembly of each second support rod 32 with the second flange 212 and the rotating shaft 11.

[0038] In some embodiments, the first support rod 31 and / or the second support rod 32 are provided with a flat opening 30 at the center of their length to facilitate the operator's screwing operation on the first support rod 31 and the second support rod 32.

[0039] In some embodiments, each of the outlets 2111 is formed on the second flange 212, and each of the inlets 2221 is formed on the first flange 223, thereby making the connection of each inlet pipe and outlet pipe more convenient.

[0040] The first flange 223 and the outer sleeve 22 are separate assembly structures. Specifically, the first flange 223 is bolted to the bottom end face of the outer sleeve 22 with screws. Designing them as separate assembly structures allows for the independent formation of the aforementioned annular groove 221 on the outer sleeve 22 and the machining of a connection hole on the first flange 223 to match the stator housing 12. This reduces the difficulty of selecting the corresponding machining tools, thereby further reducing processing costs. In some embodiments, the second flange 212 and the rotating core 21 can be integrally formed.

[0041] According to an embodiment of the present invention, a swing-type single-arm AC milling head is also provided, including a spindle module, an A-axis module and a C-axis module, and also including the above-mentioned gas-liquid conveying slip ring structure. The rotating shaft module 1 is one of the spindle module, the A-axis module and the C-axis module, and the gas-liquid conveying slip ring structure can simultaneously provide gas and liquid to the spindle module, the A-axis module and the C-axis module.

[0042] According to an embodiment of the present invention, a machine tool is also provided, including the above-described oscillating single-arm AC milling head.

[0043] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A gas-liquid transport slip ring structure, characterized in that, The assembly includes a rotating shaft module (1) and a slip ring assembly disposed outside the rotating shaft module (1). The slip ring assembly includes a rotating core (21) and an outer sleeve (22) fitted onto the radial outer peripheral wall of the rotating core (21). The rotating core (21) can be fixedly connected to the first end of the rotating shaft (11) of the rotating shaft module (1), and the outer sleeve (22) can be fixedly connected to the first end of the stator housing (12) of the rotating shaft module (1). The first end of the rotating shaft (11) and the first end of the stator housing (12) both correspond to the same end of the rotating shaft module (1). The inner wall of the outer sleeve (22) has a plurality of annular grooves (221) spaced apart along its axial direction. When the outer sleeve (22) is fitted onto the radial outer peripheral wall of the rotating shaft module (1), the slip ring assembly is fixedly connected to the first end of the stator housing (12) of the rotating shaft module (1). When the rotating core (21) is in place, each of the annular grooves (221) and the outer circular wall of the rotating core (21) together form multiple annular distribution cavities. Multiple outlet channels (211) are formed inside the rotating core (21). The inlet end of each outlet channel (211) is connected to each of the annular distribution cavities in a corresponding manner. The outlet (2111) of each outlet channel (211) is connected to an outlet pipe that can be controllably connected to the functional components of the rotating shaft module (1). Multiple inlet channels (222) are formed inside the outer sleeve (22). The outlet end of each inlet channel (222) is connected to each of the annular distribution cavities in a corresponding manner. The inlet (2221) of each inlet channel (222) is used to connect to a fluid source.

2. The gas-liquid transport slip ring structure according to claim 1, characterized in that, A plurality of sealing rings (23) are held between the rotating core (21) and the outer sleeve (22), and each of the sealing rings (23) is spaced apart along the axial direction of the rotating core (21) and located on both sides of each of the annular distribution cavities.

3. The gas-liquid transport slip ring structure according to claim 2, characterized in that, The sealing ring (23) is a Gladley ring.

4. The gas-liquid transport slip ring structure according to claim 1, characterized in that, A bushing ring (24) is provided between the two ends of the rotating core (21) and the outer sleeve (22), and the bushing ring (24) has a self-lubricating function.

5. The gas-liquid transport slip ring structure according to claim 4, characterized in that, The bushing ring (24) is a copper ring.

6. The gas-liquid transport slip ring structure according to claim 1, characterized in that, The outer sleeve (22) has a first flange (223) extending radially outward at one end near the shaft module (1). The first flange (223) is fixedly connected to the first end face of the stator housing (12) via multiple first support rods (31). The rotating core (21) has a second flange (212) extending radially outward at one end near the shaft module (1). The second flange (212) is fixedly connected to the first end face of the shaft (11) via multiple second support rods (32).

7. The gas-liquid transport slip ring structure according to claim 6, characterized in that, The two ends of the first support rod (31) are threaded to the first flange (223) and the stator housing (12) respectively. One end of the second support rod (32) is threaded to the rotating shaft (11), and the other end is inserted into the second flange (212).

8. The gas-liquid transport slip ring structure according to claim 6, characterized in that, Each of the said outlets (2111) is formed on the second flange (212), and each of the said inlets (2221) is formed on the first flange (223); and / or, the first flange (223) and the outer sleeve (22) are separate assembly structures.

9. A swing-type single-arm AC milling head, comprising a spindle module, an A-axis module, and a C-axis module, characterized in that, It also includes the gas-liquid conveying slip ring structure according to any one of claims 1 to 8, wherein the rotating shaft module (1) is one of the main shaft module, the A-axis module and the C-axis module, and the gas-liquid conveying slip ring structure can simultaneously provide gas and liquid to the main shaft module, the A-axis module and the C-axis module.

10. A machine tool, characterized in that, Includes the swing-type single-arm AC milling head as described in claim 9.

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