Five-axis cradle rotary table and machine tool
By setting a tailstock and a C-axis pipe distributor in the five-axis cradle turntable to form a loop, the problems of pipe breakage and leakage are solved, the safety and lifespan of the turntable are improved, and installation and maintenance are simplified.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-06
- Publication Date
- 2026-04-14
AI Technical Summary
During operation, the existing five-axis cradle turntable is prone to pipe tangling or wear, leading to leaks and affecting the reliability and lifespan of the turntable.
By employing a tailstock pipe distributor and a C-axis pipe distributor, and by setting up first and second pipes, which are respectively connected to the tailstock and the C-axis body, a loop is formed, thus preventing the pipes from twisting or wearing due to rotation.
It effectively avoids pipe breakage or leakage, improves the safety and lifespan of the turntable, and simplifies the installation and maintenance process.
Smart Images
Figure CN121848145A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of machine tool technology, specifically relating to a five-axis cradle rotary table and machine tool. Background Technology
[0002] In recent years, the machine tool industry has developed rapidly, and competition has become increasingly fierce. The market demands higher and higher processing capabilities and efficiency from machine tools, and workpieces are getting larger and larger, leading to the increasingly widespread application of five-axis cradle rotary tables on gantry milling machines.
[0003] In the existing technology, during the operation of the cradle turntable, the internal pipelines (such as air pipes, water pipes, oil pipes, etc.) of the turntable are prone to tangling or wear, which can lead to pipeline leaks and damage to the internal functional components of the turntable. This affects the normal use of the turntable and poses a great challenge to the reliability and lifespan of the cradle turntable. Summary of the Invention
[0004] The purpose of this application is to at least solve one of the technical problems existing in the prior art, and to provide a five-axis cradle turntable and machine tool, which, by setting a tailstock pipe distributor and a C-axis pipe distributor, prevents the first and second pipes from being forced to twist due to the rotation of the C-axis machine body around the A-axis, and prevents the internal pipes of the C-axis machine body from being twisted or leaked due to the rotation of the C-axis turntable around the C-axis, thus greatly improving the safety and service life of the turntable.
[0005] The technical solution adopted by this application to solve its technical problem is: Firstly, a five-axis cradle turntable includes: The A-axis mechanism includes an A-axis body, a tailstock, and an A-axis motor. The tailstock is provided with a tailstock rotary shaft, the A-axis body is provided with an A-axis rotary shaft, and the A-axis motor is mounted on the A-axis body. The C-axis mechanism includes a C-axis body, a C-axis rotary table, and a C-axis motor. The C-axis body is installed between the tailstock rotary axis and the A-axis rotary axis and is driven by the A-axis motor. The C-axis rotary table is located at the front end of the C-axis body. The C-axis motor is installed on the C-axis body. The output end of the C-axis motor is connected to the C-axis rotary table through the C-axis rotary axis. The C-axis body is provided with a cooling channel. A tailstock pipe distributor includes a first fixed part and a first rotating part rotatably mounted on the first fixed part. The first fixed part has a first fixed channel, and the first rotating part has a first rotating channel communicating with the first fixed channel. The first fixed part is mounted on the tailstock, and the first rotating part is mounted inside the tailstock rotating shaft to rotate with the tailstock rotating shaft. The C-axis piping distributor includes a second fixed part and a second rotating part rotatably mounted on the second fixed part. The second fixed part has a second fixed channel, and the second rotating part has a second rotating channel connected to the second fixed channel. The second fixed part is mounted on the C-axis body, and the second rotating part is mounted inside the C-axis rotary shaft to rotate with the C-axis rotary shaft. The end of the first rotating channel away from the first fixed channel is connected to the cooling channel through a first pipe and to the second fixed channel through a second pipe.
[0006] In conjunction with the first aspect and the above-described implementations, in some implementations of the first aspect, a plurality of first annular cavities and second annular cavities are provided between the first fixing part and the first rotating part, the first fixing channel includes a plurality of first fixing branches and second fixing branches, the first rotating channel includes a plurality of first rotating branches and second rotating branches, the first rotating branches are connected to the first fixing branches through the first annular cavity, the second rotating branches are connected to the second fixing branches through the second annular cavity, the first rotating branches are connected to the cooling channel through a first pipe, and the second rotating branches are connected to the second fixing channel through a second pipe.
[0007] In conjunction with the first aspect and the above-described implementations, in some implementations of the first aspect, a plurality of third annular cavities are provided between the second fixed part and the second rotating part, the second fixed channel includes a plurality of third fixed branches, the second rotating branch is correspondingly connected to each of the third fixed branches through the second pipeline, the second rotating channel includes a plurality of third rotating branches, and the third rotating branch is correspondingly connected to the third fixed branch through the third annular cavity.
[0008] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the first rotating part is provided with a first inner cavity, the first fixing part has a first connecting part and a first mating part, the first connecting part abuts against the outer side of the tail seat and is connected to the tail seat, the first mating part is provided on the side of the first connecting part near the tail seat rotation shaft and extends into the first inner cavity, and a first annular cavity and a second annular cavity are provided between the first mating part and the first rotating part.
[0009] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, a boss is provided on the outer periphery of the first rotating part, an annular groove is provided on the inner side of the tailstock rotating shaft, the first rotating part is embedded in the annular groove through the boss, a first sealing element is provided between the boss and the tailstock rotating shaft, and a second sealing element is provided between the tailstock and the first connecting part.
[0010] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the second rotating part extends along the front-back direction to the C-axis rotary disk and is connected to the C-axis rotary disk. The second rotating part has a second inner cavity, and the second fixing part has a second connecting part and a second mating part. The second connecting part abuts against the outside of the C-axis body and is connected to the C-axis body. The second mating part is located on the side of the second connecting part near the C-axis rotary shaft and extends into the second inner cavity. The third annular cavity is provided between the second mating part and the second rotating part.
[0011] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the second connecting part is provided with a mounting groove on the side near the C-axis body, the mounting groove is located on the outer periphery of the second mating part, and the second connecting part is provided with a third sealing element abutting against the C-axis body within the mounting groove.
[0012] In combination with the first aspect and the above-described implementations, some implementations of the first aspect further include a connector, wherein the C-axis rotary disk is provided with a stepped hole communicating with the C-axis rotary shaft, one end of the second rotating part away from the second fixed part abuts against the stepped hole through the stepped structure, and the connector passes through the stepped structure from front to back and is connected to the C-axis rotary shaft.
[0013] In conjunction with the first aspect and the above-described implementations, in some implementations of the first aspect, the C-axis body is connected to the tailstock rotary shaft via a side cover assembly. The side cover assembly has a cavity, and both the cooling channel and the tailstock rotary shaft are connected to the cavity. The end of the first pipe away from the tailstock passes through the cavity and connects to the cooling channel. The side of the C-axis body near the side cover assembly has a connecting hole, which connects to the cavity and the outside of the C-axis body. The outside of the C-axis body has an external connecting pipe that connects to the connecting hole and the second fixed channel. The end of the second pipe away from the tailstock passes through the cavity and connects to the external connecting pipe through the connecting hole.
[0014] In a second aspect, a machine tool includes a five-axis cradle turntable as described in any implementation of the first aspect.
[0015] One of the above technical solutions has at least one of the following advantages or beneficial effects: The five-axis cradle turntable of this application, by setting a tailstock pipe distributor and a C-axis pipe distributor, connects the first pipe between the first rotating part of the tailstock pipe distributor and the C-axis body to form a first circuit, so as to introduce cooling medium into the cooling channel; and connects the second pipe between the first rotating part of the tailstock pipe distributor and the second fixed part of the C-axis pipe distributor fixed to the C-axis body, and then delivers oil or gas or other media to the pneumatic clamp or hydraulic clamp installed on the C-axis turntable through the second rotating part that rotates synchronously with the C-axis rotary axis, thus forming a second circuit.
[0016] The first and second pipelines are no longer forced to twist due to the C-axis rotation around the A-axis, thus preventing problems such as pipe tangling and wear. This avoids the possibility of pipe breakage or leakage caused by pipe tangling and wear. Simultaneously, the C-axis pipeline distributor effectively prevents the internal pipelines of the C-axis machine from being broken or leaking due to the rotation of the C-axis turntable around the C-axis, ensuring the smooth flow of all internal pipelines during normal use or debugging, and greatly improving the safety and lifespan of the turntable.
[0017] Furthermore, the tailstock pipe distributor and the C-axis pipe distributor only need to be inserted into the corresponding rotary shaft for fixed installation, making installation and maintenance relatively simple. Attached Figure Description
[0018] The following description, in conjunction with the accompanying drawings, further illustrates this application: Figure 1 This is an isometric view of one embodiment of this application; Figure 2 yes Figure 1 A bottom view schematic diagram of one embodiment is shown; Figure 3 yes Figure 1 A partial cross-sectional view of one embodiment is shown; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 yes Figure 3 Enlarged view of point B in the middle; Figure 6 yes Figure 3 Enlarged diagram of point C in the middle. Detailed Implementation
[0019] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.
[0020] In this application, when directions (up, down, left, right, front, and back) are described, it is only for the purpose of describing the technical solution of this application, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on this application.
[0021] In this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this application, the terms "first" and "second" are used only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.
[0022] In this application, unless otherwise explicitly defined, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to direct connection or indirect connection through an intermediate medium; they can refer to fixed connection, detachable connection, or integral molding; they can refer to mechanical connection, electrical connection, or connection capable of mutual communication; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this application based on the specific content of the technical solution.
[0023] See Figures 1 to 3 The embodiments of this application provide a five-axis cradle turntable, including an A-axis mechanism 1, a C-axis mechanism 2, a tailstock pipe distributor 3, and a C-axis pipe distributor 4. The A-axis mechanism 1 includes an A-axis body 11, a tailstock 12, and an A-axis motor. The tailstock 12 is provided with a tailstock rotary shaft 121, the A-axis body 11 is provided with an A-axis rotary shaft, and the A-axis motor is mounted on the A-axis body 11.
[0024] The C-axis mechanism 2 includes a C-axis body 21, a C-axis rotary table 22, and a C-axis motor. The C-axis body 21 is installed between the tailstock rotary shaft 121 and the A-axis rotary shaft, and is driven by the A-axis motor. The output end of the A-axis motor is connected to the A-axis rotary shaft, thereby driving the C-axis body 21 to rotate around the A-axis.
[0025] The C-axis rotary table 22 is located at the front end of the C-axis machine body 21. The C-axis motor is mounted on the C-axis machine body 21. The output end of the C-axis motor is connected to the C-axis rotary table 22 through the C-axis rotary shaft 23, thereby driving the C-axis rotary table 22 to rotate around the C-axis, causing the workpiece clamped on the C-axis rotary table 22 to rotate and perform machining. The C-axis machine body 21 is equipped with a cooling channel for cooling the C-axis motor.
[0026] The C-axis body 21 can be understood as including the C-axis body 21 itself and other support structures for supporting the C-axis motor. It is understood that the cooling channel can be located on the C-axis body 21 itself, or on the bearing assembly supporting the C-axis motor or other components that come into contact with the C-axis motor, depending on actual requirements.
[0027] See Figure 3 and Figure 4 The tailstock pipe distributor 3 includes a first fixing part 31 and a first rotating part 32 rotatably mounted on the first fixing part 31. The first fixing part 31 has a first fixing channel, and the first rotating part 32 has a first rotating channel communicating with the first fixing channel. The first fixing part 31 is mounted on the tailstock 12, and the first rotating part 32 is mounted inside the tailstock rotating shaft 121 to rotate with the tailstock rotating shaft 121.
[0028] See Figure 3 and Figure 5 The C-axis piping distributor 4 includes a second fixed part 41 and a second rotating part 42 rotatably mounted on the second fixed part 41. The second fixed part 41 has a second fixed channel, and the second rotating part 42 has a second rotating channel communicating with the second fixed channel. The second fixed part 41 is mounted on the C-axis body 21, and the second rotating part 42 is mounted inside the C-axis rotary shaft 23 to rotate with the C-axis rotary shaft 23, so that the second rotating channel can deliver media such as oil or gas to pneumatic or hydraulic clamps mounted on the C-axis rotary table 22.
[0029] The end of the first rotating channel away from the first fixed channel is connected to the cooling channel via the first pipe 51 and to the second fixed channel via the second pipe 52. In other words, the first pipe 51 connects the first rotating part 32 and the C-axis body 21 to form a first loop, so as to introduce cooling medium into the cooling channel for heat exchange and then achieve reflux; the second pipe 52 connects the first rotating part 32 and the second fixed part 41 of the C-axis pipe distributor 4 fixed to the C-axis body 21, and then delivers oil or gas media to the pneumatic or hydraulic clamps installed on the C-axis rotary table 22 through the second rotating part 42 that rotates synchronously with the C-axis rotary shaft 23, thus forming a second loop.
[0030] The first pipe 51 can be used to carry media such as water, oil or gas according to cooling requirements, and the second pipe 52 can be used to carry oil and / or gas according to clamping requirements, without any restrictions.
[0031] When the C-axis body 21 rotates around the A-axis under the drive of the A-axis motor, the first rotating part 32 rotates synchronously with the tailstock rotating shaft 121, so that the C-axis body 21 and the first rotating part 32 rotate synchronously, thereby making the first pipe 51 connected between the first rotating part 32 and the C-axis body 21 no longer twisted.
[0032] At the same time, since the second fixing part 41 of the C-axis pipe distributor 4 is fixed to the C-axis body 21, the second fixing part 41 and the first rotating part 32 rotate synchronously, so that the second pipe 52 connected between the first rotating part 32 and the second fixing part 41 is no longer twisted.
[0033] The first pipe 51 and the second pipe 52 are no longer forced to twist due to the rotation of the C-axis body 21 around the A-axis, thus avoiding problems such as pipe twisting and wear. This greatly improves the safety and lifespan of the turntable.
[0034] Furthermore, when the C-axis motor drives the C-axis rotary table 22 to rotate, the second rotating part 42 can rotate synchronously with the C-axis rotary shaft 23, and the second rotating channel of the second rotating part 42 delivers oil or gas to the pneumatic or hydraulic clamps installed on the C-axis rotary table 22. This solves the problems of forced twisting of internal pipelines and pipe tangling and wear caused by the rotation of the C-axis rotary table 22 around the C-axis in the prior art. It also avoids the problem of pipe breakage or leakage caused by pipe tangling and wear in the internal pipelines of the C-axis body 21, and greatly improves the safety and lifespan of the turntable.
[0035] The five-axis cradle turntable of this application is configured with a tailstock pipe distributor 3 and a C-axis pipe distributor 4. The first pipe 51 is connected between the first rotating part 32 of the tailstock pipe distributor 3 and the C-axis body 21 to form a first circuit, so as to introduce cooling medium into the cooling channel. The second pipe 52 is connected between the first rotating part 32 of the tailstock pipe distributor 3 and the second fixed part 41 of the C-axis pipe distributor 4 fixed to the C-axis body 21. The second rotating part 42, which rotates synchronously with the C-axis rotary shaft 23, supplies oil or gas to the pneumatic or hydraulic clamps installed on the C-axis rotary table 22, thus forming a second circuit.
[0036] The first pipe 51 and the second pipe 52 are no longer forced to twist due to the rotation of the C-axis body 21 around the A-axis, thus avoiding problems such as pipe twisting and wear. This prevents the pipes from being twisted or leaking due to pipe twisting or wear. Simultaneously, the C-axis pipe distributor 4 effectively prevents the internal pipes of the C-axis body 21 from being twisted or leaking due to the rotation of the C-axis rotary table 22 around the C-axis, effectively ensuring the smooth flow of all internal pipes during normal use or debugging, greatly improving the safety and lifespan of the turntable. Furthermore, the tailstock pipe distributor 3 and the C-axis pipe distributor 4 only need to be inserted into the corresponding rotary shafts for fixing, making installation and maintenance relatively simple.
[0037] Further, see Figure 4A plurality of first annular cavities 331 and second annular cavities 332 are provided at intervals between the first fixed part 31 and the first rotating part 32. The first fixed channel includes a plurality of first fixed branches 311 and second fixed branches 312, and the first rotating channel includes a plurality of first rotating branches 321 and second rotating branches 322. The first rotating branches 321 are connected to the first fixed branches 311 through the first annular cavity 331, and the second rotating branches 322 are connected to the second fixed branches 312 through the second annular cavity 332. By setting the first annular cavities 331 and second annular cavities 332, each rotating branch of the first rotating part 32 can maintain communication with each fixed branch of the first fixed part 31 during the rotation of the first rotating part 32 following the tailstock rotating shaft 121.
[0038] The first rotating branch 321 is connected to the cooling channel through the first pipe 51, and the second rotating branch 322 is connected to the second fixed channel through the second pipe 52, so as to introduce the required oil, water or gas media into the cooling channel and the C-axis pipe distributor 4, and realize the return flow.
[0039] Further, see Figure 5 A plurality of third annular cavities 43 are provided between the second fixed part 41 and the second rotating part 42. The second fixed channel includes a plurality of third fixed branches 411. The second rotating branch 322 is connected to each of the third fixed branches 411 through the second pipe 52. The second rotating channel includes a plurality of third rotating branches 421. The third rotating branches 421 are connected to the third fixed branches 411 through the third annular cavity 43, so that when the second rotating part 42 rotates with the C-axis rotation shaft 23, each rotating branch of the second rotating part 42 can maintain communication with each fixed branch of the second fixed part 41.
[0040] For tailstock pipe distributor 3, see Figure 3 and Figure 4 The first rotating part 32 has a first inner cavity, and the first fixing part 31 has a first connecting part 313 and a first mating part 314. The first connecting part 313 abuts against the outer side of the tailstock 12 and is connected to the tailstock 12, realizing the external installation of the first fixing part 31, which is more convenient for installation. The first mating part 314 is located on the side of the first connecting part 313 near the tailstock rotating shaft 121 and extends into the first inner cavity. A first annular cavity 331 and a second annular cavity 332 are provided between the first mating part 314 and the first rotating part 32.
[0041] Further, see Figure 4The first rotating part 32 has a boss 323 on its outer periphery, and the tailstock rotating shaft 121 has an annular groove on its inner side. The first rotating part 32 is embedded in the annular groove through the boss 323, which enables quick positioning and installation of the first rotating part 32, making installation relatively convenient. A first sealing element 61 is provided between the boss 323 and the tailstock rotating shaft 121 to ensure the sealing between the first rotating part 32 and the tailstock rotating shaft 121; a second sealing element 62 is provided between the tailstock 12 and the first connecting part 313 to ensure the sealing between the first fixing part 31 and the tailstock 12, thereby effectively avoiding the risk of leakage into the motor and other components inside the tailstock 12 when the tailstock pipe distributor 3 leaks.
[0042] In some embodiments, the first seal 61 includes an oil seal, which effectively ensures the sealing between the boss 323 and the tailstock rotary shaft 121. The second seal 62 includes an O-ring to meet the sealing requirements of the two adjacent surfaces between the tailstock 12 and the first connecting portion 313.
[0043] For C-axis pipe distributor 4, see Figure 3 and Figure 5 The second rotating part 42 extends in the front-to-back direction to the C-axis rotary disk 22 and is connected to the C-axis rotary disk 22. The second rotating part 42 achieves synchronous movement with the C-axis rotary shaft through the fixed connection with the C-axis rotary disk 22, which facilitates installation.
[0044] The second rotating part 42 has a second inner cavity, and the second fixing part 41 has a second connecting part 412 and a second mating part 413. The second connecting part 412 abuts against the outside of the C-axis body 21 and is connected to the C-axis body 21, realizing the external installation of the second fixing part 41, which is more convenient for installation. The second mating part 413 is located on the side of the second connecting part 412 near the C-axis rotating shaft 23 and extends into the second inner cavity. A third annular cavity 43 is provided between the second mating part 413 and the second rotating part 42. The C-axis pipe distributor 4 with this structure is isolated from the C-axis shaft system and cannot come into contact with the structure outside the C-axis rotating shaft 23. When the C-axis pipe distributor 4 leaks, it will not affect the C-axis motor and encoder.
[0045] Further, see Figure 5 The second connecting part 412 is provided with a mounting groove on the side near the C-axis body 21. The mounting groove is located on the outer periphery of the second mating part 413. The second connecting part 412 is provided with a third sealing element 63 in the mounting groove, which abuts against the C-axis body 21, effectively ensuring the sealing of the connection between the second connecting part 412 and the C-axis body 21 and improving the installation stability.
[0046] Furthermore, see Figure 6The five-axis cradle turntable also includes a connector 423. The C-axis rotary disk 22 is provided with a stepped hole that communicates with the C-axis rotary shaft 23. The end of the second rotating part 42 away from the second fixed part 41 abuts against the stepped hole through the stepped structure 422. The connector 423 passes through the stepped structure 422 from front to back and is connected to the C-axis rotary shaft 23.
[0047] Furthermore, see Figures 1 to 3 The C-axis body 21 is connected to the tailstock rotary shaft 121 via the side cover assembly 24. The side cover assembly 24 has a cavity 241, through which the cooling channel and the tailstock rotary shaft 121 are connected. The end of the first pipe 51 away from the tailstock 12 passes through the cavity 241 and connects to the cooling channel.
[0048] A connecting hole is provided on the side of the C-axis body 21 near the side cover assembly 24, connecting the cavity 241 and the outside of the C-axis body 21. An external connector 7 is provided on the outside of the C-axis body 21, connecting to the connecting hole and the second fixed channel. The end of the second pipe 52 away from the tailstock 12 passes through the cavity 241 and then connects to the external connector 7 through the connecting hole. Connecting the end of the second pipe 52 away from the tailstock 12 to the connecting hole of the C-axis body 21 achieves the fixed installation of the second pipe 52. The external connector 7 is then used to connect the second pipe 52 to the second fixed channel. The pipeline arrangement is relatively reasonable and convenient for connection. In addition, by integrating the first pipe 51 and the second pipe 52 into the side cover assembly 24, it is convenient for storage and also serves to protect the pipeline.
[0049] Since the tailstock pipe distributor 3 is sealed with the tailstock rotating shaft 121 and the tailstock 12, when the pipe leaks, the transported medium such as oil and water can first seep out through the side cover assembly 24, which serves as a reminder to the user to carry out maintenance, which is conducive to the timely maintenance of the turntable and improves the safety of the turntable.
[0050] The present invention also provides a machine tool including a five-axis cradle turntable according to any of the above embodiments.
[0051] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0052] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this application, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A five-axis cradle turntable, characterized in that, include: The A-axis mechanism includes an A-axis body, a tailstock, and an A-axis motor. The tailstock is provided with a tailstock rotary shaft, the A-axis body is provided with an A-axis rotary shaft, and the A-axis motor is mounted on the A-axis body. The C-axis mechanism includes a C-axis body, a C-axis rotary table, and a C-axis motor. The C-axis body is installed between the tailstock rotary axis and the A-axis rotary axis and is driven by the A-axis motor. The C-axis rotary table is located at the front end of the C-axis body. The C-axis motor is installed on the C-axis body. The output end of the C-axis motor is connected to the C-axis rotary table through the C-axis rotary axis. The C-axis body is provided with a cooling channel. A tailstock pipe distributor includes a first fixed part and a first rotating part rotatably mounted on the first fixed part. The first fixed part has a first fixed channel, and the first rotating part has a first rotating channel communicating with the first fixed channel. The first fixed part is mounted on the tailstock, and the first rotating part is mounted inside the tailstock rotating shaft to rotate with the tailstock rotating shaft. The C-axis piping distributor includes a second fixed part and a second rotating part rotatably mounted on the second fixed part. The second fixed part has a second fixed channel, and the second rotating part has a second rotating channel connected to the second fixed channel. The second fixed part is mounted on the C-axis body, and the second rotating part is mounted inside the C-axis rotary shaft to rotate with the C-axis rotary shaft. The end of the first rotating channel away from the first fixed channel is connected to the cooling channel through a first pipe and to the second fixed channel through a second pipe.
2. The five-axis cradle turntable according to claim 1, characterized in that, A plurality of first annular cavities and second annular cavities are provided between the first fixed part and the first rotating part. The first fixed channel includes a plurality of first fixed branches and second fixed branches. The first rotating channel includes a plurality of first rotating branches and second rotating branches. The first rotating branches are connected to the first fixed branches through the first annular cavity. The second rotating branches are connected to the second fixed branches through the second annular cavity. The first rotating branches are connected to the cooling channel through a first pipe. The second rotating branches are connected to the second fixed channel through a second pipe.
3. The five-axis cradle turntable according to claim 2, characterized in that, A plurality of third annular cavities are provided between the second fixing part and the second rotating part. The second fixing channel includes a plurality of third fixing branches. The second rotating branch is connected to each of the third fixing branches through the second pipe. The second rotating channel includes a plurality of third rotating branches. The third rotating branches are connected to the third fixing branches through the third annular cavity.
4. The five-axis cradle turntable according to claim 2, characterized in that, The first rotating part has a first inner cavity, and the first fixing part has a first connecting part and a first mating part. The first connecting part abuts against the outer side of the tail seat and is connected to the tail seat. The first mating part is located on the side of the first connecting part near the tail seat rotation shaft and extends into the first inner cavity. A first annular cavity and a second annular cavity are provided between the first mating part and the first rotating part.
5. The five-axis cradle turntable according to claim 4, characterized in that, The outer periphery of the first rotating part is provided with a boss, and the inner side of the tailstock rotating shaft is provided with an annular groove. The first rotating part is embedded in the annular groove through the boss. A first sealing element is provided between the boss and the tailstock rotating shaft, and a second sealing element is provided between the tailstock and the first connecting part.
6. The five-axis cradle turntable according to claim 3, characterized in that, The second rotating part extends in the front-to-back direction to the C-axis rotary disk and is connected to the C-axis rotary disk. The second rotating part has a second inner cavity. The second fixing part has a second connecting part and a second mating part. The second connecting part abuts against the outside of the C-axis body and is connected to the C-axis body. The second mating part is located on the side of the second connecting part near the C-axis rotary shaft and extends into the second inner cavity. The third annular cavity is provided between the second mating part and the second rotating part.
7. The five-axis cradle turntable according to claim 6, characterized in that, The second connecting part has a mounting groove on the side near the C-axis body. The mounting groove is located on the outer periphery of the second mating part. The second connecting part has a third sealing element that abuts against the C-axis body in the mounting groove.
8. The five-axis cradle turntable according to claim 6, characterized in that, It also includes a connector. The C-axis rotary disk is provided with a stepped hole that communicates with the C-axis rotary shaft. The end of the second rotating part away from the second fixed part abuts against the stepped hole through the stepped structure. The connector passes through the stepped structure from front to back and is connected to the C-axis rotary shaft.
9. The five-axis cradle turntable according to claim 1, characterized in that, The C-axis body is connected to the tailstock rotary shaft via a side cover assembly. The side cover assembly has a cavity, and the cooling channel and the tailstock rotary shaft are both connected to the cavity. The end of the first pipe away from the tailstock passes through the cavity and connects to the cooling channel. The side of the C-axis body near the side cover assembly has a connecting hole, which connects the cavity and the outside of the C-axis body. The outside of the C-axis body has an external connecting pipe that connects the connecting hole and the second fixed channel. The end of the second pipe away from the tailstock passes through the cavity and connects to the external connecting pipe through the connecting hole.
10. A machine tool, characterized in that, Includes the five-axis cradle turntable as described in any one of claims 1 to 9.