Air floatation main shaft with waterway structure

Abstract

The invention discloses an air floating spindle with a waterway structure, and belongs to the technical field of thinning machines. The air floating main shaft with the water path structure comprises a core shaft, a shaft body assembly and the water path structure, the core shaft can rotate around the Z axis relative to the shaft body assembly; the water path structure comprises a water inlet pipeline, cooling pipelines and a water outlet pipeline which are arranged on the shaft body assembly, the water inlet pipeline, the cooling pipelines and the water outlet pipeline are sequentially communicated, the cooling pipelines which are communicated with one another are arranged, and the cooling pipelines extend in the axial direction of the mandrel to form a series cooling loop of a snake-shaped structure. Therefore, it can be guaranteed that cooling of the core shaft and the shaft body assembly is comprehensive through the formed series-connection cooling loop, the whole air floating main shaft with the water path structure can be fully cooled, and then the influence of high temperature on the working precision of the air floating main shaft with the water path structure can be reduced; and the high working stability of the air floating main shaft with the water path structure in the long-time operation process is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of thinning machines, and in particular to an air-floating spindle with a water channel structure. Background Art

[0002] The air bearing spindle is a high-precision processing structure, and its precision and stability have an important impact on the processing quality. The air bearing spindle has become a key part in the thinning machine due to its high speed and high precision. Among them, the air bearing spindle will generate heat when running at high speed, and excessive heat will cause the air bearing spindle to get stuck and cannot rotate stably. Therefore, an effective cooling structure is needed to cool it down.

[0003] At present, when an air-floating spindle is running at high speed, a gas cooling structure is usually used for air cooling; however, in an air-floating spindle that requires high working stability and long-term operation, the gas cooling structure is difficult to achieve the required cooling effect, resulting in poor cooling effect, thereby affecting the working stability of the entire air-floating spindle during long-term operation.

[0004] In view of the above problems, an air-floating main shaft with a water channel structure is urgently needed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an air-floating spindle with a water channel structure, which can be fully cooled to reduce the influence of high temperature on the working accuracy of the air-floating spindle with a water channel structure, and ensure the high working stability of the air-floating spindle with a water channel structure during long-term operation.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The air-floating spindle with a water channel structure is used in a thinning machine, including:

[0008] Mandrel;

[0009] A shaft assembly, wherein the mandrel can rotate around a Z axis relative to the shaft assembly;

[0010] The water circuit structure includes a water inlet pipe, a cooling pipe and a water outlet pipe respectively arranged on the shaft assembly. The water inlet pipe, the cooling pipe and the water outlet pipe are connected in sequence, and a plurality of cooling pipes connected to each other are provided. Each cooling pipe extends along the axial direction of the core shaft to form a series cooling circuit with a serpentine structure.

[0011] As an optional solution, the shaft assembly includes:

[0012] A copper sleeve, coaxially sleeved outside the core shaft;

[0013] A shaft body, wherein a first cavity is formed in the shaft body, the copper sleeve and the core shaft are coaxially arranged in the first cavity, and a motor is also arranged in the first cavity, the motor is located above the copper sleeve, the motor comprises a stator and a rotor that match each other, the protruding outer edge of the stator is placed on the top surface of the shaft body, the rotor is fixedly sleeved on the core shaft, and the shaft body and the protruding outer edge are provided with the cooling pipeline;

[0014] An end cover, a part of which is covered on the core shaft, and another part of which is covered on the protruding outer edge, and the water inlet pipeline and the water outlet pipeline are respectively arranged at intervals on the end cover.

[0015] As an optional solution, the shaft assembly further includes:

[0016] An upper air blowing plate is placed below the copper sleeve, and the upper air blowing plate is coaxially sleeved on the core shaft;

[0017] A movable disk is disposed below the upper air blowing disk, the movable disk is coaxially sleeved on the core shaft, and along the axial direction of the core shaft, a portion of the top surface of the movable disk abuts against the step surface of the core shaft;

[0018] A lower air blowing plate is placed below the movable plate, and the lower air blowing plate is coaxially sleeved on the core shaft;

[0019] A plate cover is placed below the lower air blowing plate, and the plate cover is coaxially connected to the shaft body;

[0020] The base disc is placed below the disc cover, the base disc is sleeved on the core shaft, and the base disc, the movable disc and the core shaft are coaxially connected.

[0021] As an optional solution, the water channel structure further includes a cooling water tank, which is arranged in a ring shape on the disk cover; the cooling pipeline is provided with five, including:

[0022] a first cooling pipeline, one end of which is in communication with the water inlet pipeline, and the other end of which is in communication with the cooling water tank;

[0023] a second cooling pipeline, one end of which is connected to the cooling water tank;

[0024] a third cooling pipeline, one end of the third cooling pipeline being connected to the other end of the second cooling pipeline;

[0025] a fourth cooling pipeline, one end of the fourth cooling pipeline being connected to the other end of the third cooling pipeline;

[0026] A fifth cooling pipeline, one end of the fifth cooling pipeline is connected to the other end of the fourth cooling pipeline, and the other end of the fifth cooling pipeline is connected to the water outlet pipeline.

[0027] As an optional solution, along the axial direction of the core shaft, the length of the first cooling pipeline, the length of the third cooling pipeline, the length of the fourth cooling pipeline and the length of the fifth cooling pipeline gradually decrease, and the length of the first cooling pipeline is equal to the length of the second cooling pipeline.

[0028] As an optional solution, a first branch is connected between the second cooling pipeline and the third cooling pipeline, between the third cooling pipeline and the fourth cooling pipeline, and between the fourth cooling pipeline and the fifth cooling pipeline, respectively, and the first branch is arranged along the circumference of the core shaft.

[0029] As an optional solution, the waterway structure further includes:

[0030] The second branch is arranged on the shaft body, and the second branch extends along the radial direction of the core shaft. The first cooling pipeline, the second cooling pipeline, the third cooling pipeline, the fourth cooling pipeline and the fifth cooling pipeline are respectively connected to the second branch.

[0031] As an optional solution, a second cavity extending along the Z axis is formed inside the core shaft; the shaft assembly further includes:

[0032] A cover plate, snap-connected to the end cover;

[0033] A water receiving pipe is installed on the cover plate, one end of the water receiving pipe is located outside the cover plate, and the other end of the water receiving pipe is plugged into the second cavity. The water receiving pipe is used to supply cutting fluid into the second cavity.

[0034] As an optional solution, the shaft assembly further includes:

[0035] A plug is arranged to plug the bottom end of the core shaft where the water receiving pipe is not arranged;

[0036] A liquid supply passage is arranged near the plug, a part of which is arranged on the core shaft, another part of which is arranged on the base and between the base and the core shaft, and both ends of the liquid supply passage are respectively connected to the second cavity and the bottom end surface of the base.

[0037] As an optional solution, the liquid supply passage includes:

[0038] A first passage is arranged near the plug, the mandrel is provided with the first passage, and the first passage is communicated with the second cavity;

[0039] A second passage, wherein the second passage is disposed between the base plate and the core shaft, and one end of the second passage is connected to the first passage;

[0040] a first water hole, which is arranged inside the base plate, the first water hole extending in the radial direction of the core shaft, and the other end of the second passage is connected to the first water hole;

[0041] The second water hole is arranged on the base plate and passes through the bottom end surface of the base plate. The second water hole extends along the axial direction of the core shaft and is communicated with the first water hole.

[0042] The beneficial effects of the present invention are:

[0043] By enabling the core shaft to rotate around the Z axis relative to the shaft body assembly, and arranging a water inlet pipe, a cooling pipe and a water outlet pipe which are connected in sequence on the shaft body assembly, water can be taken in through the water inlet pipe, the core shaft and the shaft body assembly can be cooled and lowered through the cooling pipe, and the cooled water in the cooling pipe can be discharged through the water outlet pipe, thereby realizing cooling and lowering the temperature of the core shaft and the shaft body assembly; and a plurality of cooling pipes which are connected to each other are arranged on the shaft body assembly, and each cooling pipe is extended along the axial direction of the core shaft to form a series cooling circuit with a serpentine structure, so that the formed series cooling circuit can have a larger cooling area for the core shaft and the shaft body assembly, so as to ensure that the cooling of the core shaft and the shaft body assembly is more comprehensive, so that the entire air-floating spindle with a water channel structure can be fully cooled, thereby reducing the influence of high temperature on the working accuracy of the air-floating spindle with a water channel structure, so as to ensure the high working stability of the air-floating spindle with a water channel structure during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural schematic diagram of an air-floating main shaft with a waterway structure provided by the present invention;

[0045] Figure 2 is a cross-sectional view of the air-floating main shaft with a waterway structure provided by the present invention;

[0046] Figure 3 is a perspective view of the shaft body provided by the present invention;

[0047] Figure 4 It is a structural schematic diagram of the disk cover provided by the present invention;

[0048] Figure 5 It is a structural schematic diagram of the water inlet pipeline, the first cooling pipeline and the cooling water tank provided by the present invention being connected;

[0049] Figure 6 The internal structure of the shaft provided by the present invention (excluding some structures) is shown in FIG. Figure 1 ;

[0050] Figure 7 The internal structure of the shaft provided by the present invention (excluding some structures) is shown in FIG. Figure 2 ;

[0051] Figure 8 is a structural schematic diagram of a first passage and a second passage provided by the present invention;

[0052] Fig. 9 It is a schematic diagram of the structure of the base plate provided by the present invention.

[0053] Description of reference numerals:

[0054] 1- mandrel; 11- second cavity;

[0055] 2-shaft assembly; 21-copper sleeve; 22-shaft; 23-motor; 231-stator; 2311-protruding outer edge; 232-rotor; 24-end cover; 241-cover plate; 25-upper air blowing plate; 26-movable plate; 27-lower air blowing plate; 28-plate cover; 29-base plate; 201-water pipe; 202-plug; 203-first passage; 204-second passage; 205-first water hole; 207-air spacer; 208-dynamic balancing pressure ring;

[0056] 31 - water inlet pipeline; 321 - first cooling pipeline; 322 - second cooling pipeline; 323 - third cooling pipeline; 324 - fourth cooling pipeline; 325 - fifth cooling pipeline; 33 - water outlet pipeline; 34 - second branch; 35 - cooling water tank. DETAILED DESCRIPTION

[0057] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0058] Any feature disclosed in this specification, unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features. Throughout the specification, the same reference numerals indicate the same elements.

[0059] In order to make the technical problem solved by the present invention, the technical solution adopted and the technical effect achieved more clearly, the technical solution of the present invention is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0060] In this embodiment, an air-floating spindle with a water channel structure and a thinning machine including the air-floating spindle with the water channel structure are proposed. The air-floating spindle with the water channel structure has a good cooling effect and can reduce the influence of high temperature on the working accuracy of the air-floating spindle with the water channel structure, so as to avoid the problem that the air-floating spindle with the water channel structure becomes stuck and cannot rotate stably, thereby ensuring the high working stability of the air-floating spindle with the water channel structure during long-term operation.

[0061] Specifically, Figure 1 and Figure 2 As shown, the air-floating main shaft with a water channel structure includes a core shaft 1, a shaft assembly 2 and a water channel structure; wherein the core shaft 1 can rotate around the Z axis relative to the shaft assembly 2; the water channel structure includes a water inlet pipeline 31, a cooling pipeline and a water outlet pipeline 33 respectively arranged on the shaft assembly 2, the water inlet pipeline 31, the cooling pipeline and the water outlet pipeline 33 are connected in sequence, and a plurality of cooling pipelines connected to each other are arranged, and each cooling pipeline extends along the axial direction of the core shaft 1 to form a series cooling circuit with a serpentine structure.

[0062] Compared with the prior art, the air-floating spindle with a water channel structure in this embodiment changes the cooling method of the core shaft 1 and the shaft assembly 2, that is, a series cooling circuit with a serpentine structure can be formed to water-cool the entire air-floating spindle with a water channel structure; by enabling the core shaft 1 to rotate around the Z axis relative to the shaft assembly 2, and arranging a water inlet pipeline 31, a cooling pipeline and a water outlet pipeline 33 that are connected in sequence in the shaft assembly 2, so that water can be introduced through the water inlet pipeline 31, the core shaft 1 and the shaft assembly 2 can be cooled and cooled through the cooling pipeline, and the cooled water in the cooling pipeline can be discharged through the water outlet pipeline 33, thereby achieving Cooling of the core shaft 1 and the shaft assembly 2; and, a plurality of cooling pipelines interconnected with each other are arranged on the shaft assembly 2, and each cooling pipeline is extended along the axial direction of the core shaft 1 to form a series cooling circuit with a serpentine structure, so that the formed series cooling circuit can have a larger cooling area for the core shaft 1 and the shaft assembly 2, so as to ensure that the cooling of the core shaft 1 and the shaft assembly 2 is more comprehensive, so that the entire air-floating spindle with a water channel structure is fully cooled, thereby reducing the influence of high temperature on the working accuracy of the air-floating spindle with a water channel structure, so as to ensure the high working stability of the air-floating spindle with a water channel structure during long-term operation.

[0063] It is worth noting that the water cooling involved in this embodiment can specifically use constant temperature cooling water or constant temperature cooling liquid. No specific limitation is made here, as long as cooling and lowering of temperature can be performed by water cooling.

[0064] Furthermore, if Figure 1 and Figure 2As shown, the shaft assembly 2 includes a copper sleeve 21, a shaft body 22 and an end cover 24; wherein the copper sleeve 21 is coaxially sleeved outside the core shaft 1; a first cavity is formed in the shaft body 22, the copper sleeve 21 and the core shaft 1 are coaxially arranged in the first cavity, and a motor 23 is also arranged in the first cavity, the motor 23 is located above the copper sleeve 21, so as to provide abutment and limit to the top of the copper sleeve 21 through the motor 23; and the motor 23 includes a stator 231 and a rotor 232 used in conjunction with each other. The stator 232 and the protruding outer edge 2311 of the stator 231 are placed on the top end surface of the shaft body 22, and the rotor 232 is fixedly sleeved on the core shaft 1 to drive the core shaft 1 to rotate synchronously around the Z axis through the rotor 232, and the shaft body 22 and the protruding outer edge 2311 are provided with cooling pipelines; a part of the end cover 24 is covered on the core shaft 1, and another part of the end cover 24 is covered on the protruding outer edge 2311, and the water inlet pipeline 31 and the water outlet pipeline 33 are respectively arranged at intervals on the end cover 24.

[0065] Specifically, if Figure 1 and Figure 2 As shown, the end cover 24, the protruding outer edge 2311 of the stator 231, and the shaft body 22 are axially connected by bolts; and the core shaft 1 and the rotor 232 are axially connected by bolts to ensure that the rotor 232 drives the core shaft 1 to rotate synchronously around the Z axis. Among them, the stator 231 and the rotor 232 of the motor 23 are common motor parts in the prior art, and the structure and working principle of the stator 231 and the rotor 232 are not described in detail here.

[0066] Furthermore, if Figure 1 and Figure 2 As shown, the shaft assembly 2 also includes an upper air blowing disk 25, a movable disk 26, a lower air blowing disk 27, a disk cover 28 and a base disk 29; wherein the upper air blowing disk 25 is coaxially sleeved on the core shaft 1, and the upper air blowing disk 25 is placed below the copper sleeve 21, so that the upper air blowing disk 25 can provide abutment and limit to the bottom end of the copper sleeve 21; the movable disk 26 is placed below the upper air blowing disk 25, and the movable disk 26 is coaxially sleeved on the core shaft 1, and along the axial direction of the core shaft 1, Part of the top surface of the movable disk 26 abuts against the step surface of the core shaft 1, so that the movable disk 26 can provide axial support to the core shaft 1; the lower blowing disk 27 is placed below the movable disk 26, and the lower blowing disk 27 is coaxially sleeved on the core shaft 1; the disk cover 28 is coaxially placed below the lower blowing disk 27, and the disk cover 28 is coaxial with the shaft body 22 and the two are axially connected by bolts; the base disk 29 is placed below the disk cover 28, and the base disk 29 is sleeved on the core shaft 1. Among them, the axial direction of the core shaft 1 is specifically as follows: Figure 1 The vertical direction, that is, the axial direction of the mandrel 1 is as follows Figure 2 The Z axis shown in .

[0067] Specifically, Figure 2As shown, the shaft assembly 2 further includes an air spacer 207 and a dynamic balancing pressure ring 208; wherein the air spacer 207 is coaxially arranged below the upper air blowing disc 25, and the air spacer 207 is limited between the movable disc 26 and the shaft body 22, and the lower air blowing disc 27 is coaxially arranged below the air spacer 207, that is, the upper air blowing disc 25, the air spacer 207, and the lower air blowing disc 27 are coaxial and tightly fitted in the first cavity of the shaft body 22; the inner ring of the lower air blowing disc 27 is coaxially provided with a dynamic balancing pressure ring 208, that is, the dynamic balancing pressure ring 208 is arranged between the core shaft 1 and the lower air blowing disc 27. wherein the base disc 29, the dynamic balancing pressure ring 208, the movable disc 26 and the core shaft 1 are axially connected by bolts.

[0068] By providing an air spacer 207 and a dynamic balancing pressure ring 208, a certain sealing effect can be provided to prevent cooling water from flowing out of the shaft assembly 2, thereby ensuring the cooling effect of the cooling water on the core shaft 1 and the shaft assembly 2; and the dynamic balancing pressure ring 208 rotates synchronously with the core shaft 1 around the Z axis, so that the dynamic balancing pressure ring 208 can provide dynamic balancing correction for the rotation of the core shaft 11, thereby ensuring the smooth rotation of the core shaft 1 around the Z axis.

[0069] like Figure 2 As shown, by arranging the core shaft 1, copper sleeve 21, shaft body 22, motor 23, end cover 24, upper air blowing disk 25, movable disk 26, lower air blowing disk 27, air spacer 207, dynamic balancing pressure ring 208, disk cover 28 and base disk 29 coaxially, the coaxiality of the core shaft 1 on the Z axis can be better guaranteed, thereby avoiding the problem of deflection of the core shaft 1 during high-speed rotation around the Z axis, and further ensuring the stability and reliability of the rotation of the core shaft 1.

[0070] Furthermore, if Figures 3 to 7As shown, the water channel structure also includes a cooling water tank 35, which is arranged in an annular shape on the top surface of the disk cover 28; there are five cooling pipelines, which respectively include a first cooling pipeline 321, a second cooling pipeline 322, a third cooling pipeline 323, a fourth cooling pipeline 324 and a fifth cooling pipeline 325; wherein one end of the first cooling pipeline 321 is connected to the water inlet pipeline 31, the other end of the first cooling pipeline 321 is connected to the cooling water tank 35, one end of the second cooling pipeline 322 is connected to the cooling water tank 35, one end of the third cooling pipeline 323 is connected to the second cooling pipeline The other end of the fourth cooling pipeline 324 is connected to the other end of the third cooling pipeline 323, one end of the fifth cooling pipeline 325 is connected to the other end of the fourth cooling pipeline 324, and the other end of the fifth cooling pipeline 325 is connected to the water outlet pipeline 33, thereby realizing the sequential connection of the water inlet pipeline 31, the first cooling pipeline 321, the second cooling pipeline 322, the third cooling pipeline 323, the fourth cooling pipeline 324, the fifth cooling pipeline 325 and the water outlet pipeline 33, so as to form a series cooling circuit with a serpentine structure inside the air-floating main shaft with a water channel structure.

[0071] By setting up five cooling pipelines, namely the first cooling pipeline 321, the second cooling pipeline 322, the third cooling pipeline 323, the fourth cooling pipeline 324 and the fifth cooling pipeline 325, the cooling area of ​​the cooling pipeline for the core shaft 1 and the shaft assembly 2 can be further increased, so as to ensure that the cooling of the core shaft 1 and the shaft assembly 2 is more comprehensive, and the entire air-floating spindle with a water channel structure is fully cooled, thereby reducing the influence of high temperature on the working accuracy of the air-floating spindle with a water channel structure, and further ensuring the high working stability of the air-floating spindle with a water channel structure during long-term operation. Here, there is no limitation on the specific number of cooling pipelines, as long as each cooling pipeline can basically cover each position of the shaft 22.

[0072] It is worth noting that a portion of the first cooling pipeline 321 is arranged on the protruding outer edge 2311, and another portion of the first cooling pipeline 321 is arranged on the shaft body 22; a portion of the second cooling pipeline 322 is arranged on the protruding outer edge 2311, and another portion of the second cooling pipeline 322 is arranged on the shaft body 22; a portion of the third cooling pipeline 323 is arranged on the protruding outer edge 2311, and another portion of the third cooling pipeline 323 is arranged on the shaft body 22; a portion of the fourth cooling pipeline 324 is arranged on the protruding outer edge 2311, and another portion of the fourth cooling pipeline 324 is arranged on the shaft body 22; a portion of the fifth cooling pipeline 325 is arranged on the protruding outer edge 2311, and another portion of the fifth cooling pipeline 325 is arranged on the shaft body 22.

[0073] Furthermore, if Figures 3 to 7As shown, along the axial direction of the core shaft 1, the length of the first cooling pipeline 321, the length of the third cooling pipeline 323, the length of the fourth cooling pipeline 324 and the length of the fifth cooling pipeline 325 gradually decrease, and the length of the first cooling pipeline 321 is equal to the length of the second cooling pipeline 322; on the one hand, the length of each cooling pipeline of the first cooling pipeline 321, the second cooling pipeline 322, the third cooling pipeline 323, the fourth cooling pipeline 324 and the fifth cooling pipeline 325 can be more suitable, avoiding waste of resources, and can ensure that the processing of each cooling pipeline is relatively simple and convenient; on the other hand, the five cooling pipelines with more suitable lengths can basically cover various positions of the shaft body 22, thereby ensuring that the cooling effect of the five cooling pipelines of different lengths is better.

[0074] Specifically, first branch roads are connected between the second cooling line 322 and the third cooling line 323, between the third cooling line 323 and the fourth cooling line 324, and between the fourth cooling line 324 and the fifth cooling line 325, respectively. The first branch roads are arranged along the circumference of the core shaft 1, so that the second cooling line 322 and the third cooling line 323, the third cooling line 323 and the fourth cooling line 324, and the fourth cooling line 324 and the fifth cooling line 325 can be connected through the circumferentially arranged first branch roads. Here, the shape and size of the first branch roads are not limited, as long as the cooling lines extending along the axial direction of the core shaft 1 can be connected through the first branch roads.

[0075] Furthermore, if Figure 6 and Figure 7 As shown, the water channel structure also includes a second branch 34, which is arranged on the shaft body 22, and the second branch 34 extends along the radial direction of the core shaft 1. The first cooling pipeline 321, the second cooling pipeline 322, the third cooling pipeline 323, the fourth cooling pipeline 324 and the fifth cooling pipeline 325 are respectively connected to the second branch 34. The radial direction of the core shaft 1 is as follows: Figure 2 Horizontal direction in .

[0076] By connecting the first cooling pipeline 321, the second cooling pipeline 322, the third cooling pipeline 323, the fourth cooling pipeline 324 and the fifth cooling pipeline 325 with second branch passages 34 respectively, the cooling water can flow into each second branch passage 34 respectively, so as to better increase the cooling area of ​​the core shaft 1 and the shaft assembly 2, so that the cooling water is more evenly and comprehensively distributed inside the entire air-floating main shaft with a water channel structure, thereby ensuring better uniformity and sufficiency of the cooling effect.

[0077] It is worth noting that the number of second branch roads 34 respectively connected to the first cooling pipeline 321, the second cooling pipeline 322, the third cooling pipeline 323, the fourth cooling pipeline 324 and the fifth cooling pipeline 325 can be multiple. Here, the number of second branch roads 34 respectively connected to the first cooling pipeline 321, the second cooling pipeline 322, the third cooling pipeline 323, the fourth cooling pipeline 324 and the fifth cooling pipeline 325 is not limited, and needs to be determined according to actual cooling conditions and the overall structural layout.

[0078] Furthermore, if Figure 1 and Figure 2 As shown, a second cavity 11 extending along the Z axis is formed inside the mandrel 1; the shaft assembly 2 also includes a cover plate 241 and a water receiving pipe 201; wherein the cover plate 241 is clamped to the end cover 24, which is convenient for installing the water receiving pipe 201 through the cover plate 241; the water receiving pipe 201 is installed to the cover plate 241, one end of the water receiving pipe 201 is located outside the cover plate 241, and the other end of the water receiving pipe 201 is plugged into the second cavity 11, and the water receiving pipe 201 is used to supply cutting fluid into the second cavity 11, so that the cutting fluid in the second cavity 11 can be supplied to the cutting tool in the thinning machine, so that the cutting tool can cut and thin the workpiece. wherein the cover plate 241 is limitedly clamped in the groove of the end cover 24, and the cutting tool can be a blade or a drill bit.

[0079] Specifically, Figure 2 and Figure 8 As shown, the shaft assembly 2 also includes a plug 202 and a liquid supply passage; wherein the plug 202 is blocked at the bottom end of the core shaft 1 where the water receiving pipe 201 is not provided, that is, the top end of the second cavity 11 of the core shaft 1 is inserted with the water receiving pipe 201, and the bottom end of the second cavity 11 of the core shaft 1 is blocked with the plug 202; the liquid supply passage is arranged close to the plug 202, a part of the liquid supply passage is arranged on the core shaft 1, and the other part of the liquid supply passage is arranged on the base plate 29 and between the base plate 29 and the core shaft 1, and the two ends of the liquid supply passage are respectively connected with the second cavity 11 and the bottom end surface of the base plate 29, so that the cutting fluid in the second cavity 11 can be transported to the bottom end surface of the base plate 29 through the liquid supply passage, so that the cutting fluid flows to the cutting tool through the bottom end surface of the base plate 29.

[0080] By setting up a second cavity 11 and a liquid supply passage that cooperate with each other, on the one hand, the cutting fluid in the second cavity 11 can be easily supplied to the cutting tool through the liquid supply passage, so that the cutting tool can perform cutting and thinning work, thereby ensuring the smooth cutting of the entire thinning machine; on the other hand, by the cutting fluid flowing in the second cavity 11 and the liquid supply passage respectively, the cutting fluid can take away part of the heat generated by the core shaft 1, which is beneficial to ensure a better cooling effect on the entire air-floating spindle with a water channel structure.

[0081] Specifically, Figure 8 and Fig. 9 As shown, the liquid supply passage includes a first passage 203, a second passage 204, a first water hole 205 and a second water hole; wherein, the core shaft 1 is provided with the first passage 203, and the first passage 203 is arranged close to the plug 202, that is, the first passage 203 is arranged in the lower half of the core shaft 1, and the first passage 203 is connected to the second cavity 11; the second passage 204 is arranged between the base plate 29 and the core shaft 1, and one end of the second passage 204 is connected to the first passage 203; the first water hole 205 is arranged inside the base plate 29, the first water hole 205 extends along the radial direction of the core shaft 1, and the other end of the second passage 204 is connected to the first water hole 205; the second water hole is arranged on the base plate 29 and passes through the bottom end surface of the base plate 29, the second water hole extends along the axial direction of the core shaft 1, and the second water hole is connected to the first water hole 205.

[0082] Specifically, if Figure 8 and Fig. 9 As shown, after the cutting fluid enters the second cavity 11 through the water receiving pipe 201, the cutting fluid flows through the second cavity 11 to the first passage 203 near the plug 202; then, it flows through the first passage 203 to the second passage 204, the first water hole 205 and the second water hole in sequence; finally, it flows through the second water hole to the bottom end surface of the base plate 29, and then flows through the bottom end surface of the base plate 29 to the cutting tool, so as to facilitate the cutting tool to perform cutting and thinning work.

[0083] The specific working process of the air-floating main shaft with a water channel structure in this embodiment is as follows:

[0084] First, cooling water flows into the water inlet pipe 31, so that the cooling water in the water inlet pipe 31 passes through the first cooling pipe 321, the cooling water tank 35, the second cooling pipe 322, the third cooling pipe 323, the fourth cooling pipe 324 and the fifth cooling pipe 325 in sequence; at the same time, the cooling water in the first cooling pipe 321 flows to the second branch 34 connected thereto, the cooling water in the second cooling pipe 322 flows to the second branch 34 connected thereto, the cooling water in the third cooling pipe 323 flows to the second branch 34 connected thereto, the cooling water in the fourth cooling pipe 324 flows to the second branch 34 connected thereto, and the cooling water in the fifth cooling pipe 325 flows to the second branch 34 connected thereto; thereby, the core shaft 1 and the shaft assembly 2 are water-cooled through the first cooling pipe 321, the second cooling pipe 322, the third cooling pipe 323, the fourth cooling pipe 324, the fifth cooling pipe 325, and each second branch 34.

[0085] Then, the cooling water in the fifth cooling pipeline 325 flows out to the outside of the entire air-floating spindle with a water channel structure through the water outlet pipeline 33, so as to achieve water cooling of the entire air-floating spindle with a water channel structure.

[0086] At the same time, the cutting fluid flows into the second cavity 11 of the core shaft 1 through the water receiving pipe 201, and then flows through the second cavity 11 to the first passage 203 near the plug 202; then, it flows through the first passage 203 to the second passage 204, the first water hole 205 and the second water hole in sequence; thereafter, it flows through the second water hole to the bottom end surface of the base plate 29, and then flows through the bottom end surface of the base plate 29 to the cutting tool, so as to facilitate the cutting and thinning work of the cutting tool; at the same time, the cutting fluid can take away part of the heat of the core shaft 1, ensuring a better water cooling effect on the entire air-floating spindle with a water channel structure.

[0087] The air-floating spindle with a water channel structure in the present embodiment forms a series cooling circuit with a serpentine structure by setting a water inlet pipeline 31, a first cooling pipeline 321, a second cooling pipeline 322, a third cooling pipeline 323, a fourth cooling pipeline 324, a fifth cooling pipeline 325 and a water outlet pipeline 33 which cooperate with each other, thereby ensuring a good water cooling effect for the entire air-floating spindle with a water channel structure. The continuous flow of cooling water in the formed series cooling circuit can effectively take away the heat generated by the entire air-floating spindle with a water channel structure during operation, thereby improving the working accuracy and working life of the air-floating spindle with a water channel structure. In addition, the structure of the entire water channel structure is simple and easy to process, so that the processing cost is low.

[0088] The air-floating spindle with a water channel structure in this embodiment is provided with a second cavity 11, a first passage 203, a second passage 204, a first water hole 205 and a second water hole that are used in conjunction with each other, so as to ensure that the cutting fluid can cool the core shaft 1 while supplying cutting fluid to the cutting tool, thereby making the water cooling effect of the entire air-floating spindle with a water channel structure better.

[0089] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. An air-floating spindle with a water channel structure, used in a thinning machine, characterized in that: include: Mandrel (1); A shaft assembly (2), wherein the core shaft (1) is capable of rotating around a Z axis relative to the shaft assembly (2); The water circuit structure comprises a water inlet pipe (31), a cooling pipe and a water outlet pipe (33) respectively arranged on the shaft assembly (2); the water inlet pipe (31), the cooling pipe and the water outlet pipe (33) are connected in sequence, and a plurality of cooling pipes connected to each other are provided, each of which extends along the axial direction of the core shaft (1) to form a series cooling circuit with a serpentine structure.

2. The air-floating main shaft with a waterway structure as claimed in claim 1, characterized in that: The shaft assembly (2) comprises: A copper sleeve (21) is coaxially sleeved outside the core shaft (1); A shaft body (22), wherein a first cavity is formed in the shaft body (22), the copper sleeve (21) and the core shaft (1) are coaxially arranged in the first cavity, and a motor (23) is also arranged in the first cavity, the motor (23) is located above the copper sleeve (21), the motor (23) comprises a stator (231) and a rotor (232) that match each other, the protruding outer edge (2311) of the stator (231) is placed on the top end surface of the shaft body (22), the rotor (232) is fixedly sleeved on the core shaft (1), and the shaft body (22) and the protruding outer edge (2311) are provided with the cooling pipeline; An end cover (24), wherein a portion of the end cover (24) is disposed on the core shaft (1), and another portion of the end cover is disposed on the protruding outer edge (2311); the water inlet pipeline (31) and the water outlet pipeline (33) are respectively disposed on the end cover (24) at intervals.

3. The air-floating main shaft with a waterway structure as claimed in claim 2, characterized in that: The shaft assembly (2) further comprises: An upper air blowing disk (25) is placed below the copper sleeve (21), and the upper air blowing disk (25) is coaxially sleeved on the core shaft (1); A movable disk (26) is disposed below the upper air blowing disk (25), the movable disk (26) being coaxially sleeved on the core shaft (1), and along the axial direction of the core shaft (1), a portion of the top surface of the movable disk (26) abuts against the step surface of the core shaft (1); A lower air blowing plate (27) is disposed below the movable plate (26), and the lower air blowing plate (27) is coaxially sleeved on the core shaft (1); A plate cover (28) is disposed below the lower air blowing plate (27), and the plate cover (28) is coaxially connected to the shaft (22); The base plate (29) is placed below the plate cover (28). The base plate (29) is sleeved on the core shaft (1), and the base plate (29), the movable plate (26) and the core shaft (1) are coaxially connected.

4. The air-floating main shaft with a waterway structure as claimed in claim 3, characterized in that: The water channel structure further comprises a cooling water trough (35), wherein the cooling water trough (35) is arranged in an annular shape on the disk cover (28); the cooling pipeline is provided with five, respectively comprising: A first cooling pipeline (321), one end of the first cooling pipeline (321) being in communication with the water inlet pipeline (31), and the other end of the first cooling pipeline (321) being in communication with the cooling water tank (35); a second cooling pipeline (322), one end of the second cooling pipeline (322) being in communication with the cooling water tank (35); a third cooling pipeline (323), one end of the third cooling pipeline (323) being in communication with the other end of the second cooling pipeline (322); a fourth cooling pipeline (324), one end of the fourth cooling pipeline (324) being connected to the other end of the third cooling pipeline (323); A fifth cooling pipeline (325), one end of the fifth cooling pipeline (325) is connected to the other end of the fourth cooling pipeline (324), and the other end of the fifth cooling pipeline (325) is connected to the water outlet pipeline (33).

5. The air-floating main shaft with a waterway structure as claimed in claim 4, characterized in that: Along the axial direction of the core shaft (1), the length of the first cooling pipeline (321), the length of the third cooling pipeline (323), the length of the fourth cooling pipeline (324) and the length of the fifth cooling pipeline (325) gradually decrease, and the length of the first cooling pipeline (321) is equal to the length of the second cooling pipeline (322).

6. The air-floating main shaft with a waterway structure as claimed in claim 4, characterized in that: A first branch is connected between the second cooling pipeline (322) and the third cooling pipeline (323), between the third cooling pipeline (323) and the fourth cooling pipeline (324), and between the fourth cooling pipeline (324) and the fifth cooling pipeline (325), respectively. The first branch is arranged along the circumference of the core shaft (1).

7. The air-floating main shaft with a waterway structure as claimed in claim 4, characterized in that: The waterway structure also includes: A second branch road (34) is arranged on the shaft body (22), and the second branch road (34) extends radially along the core shaft (1). The first cooling pipeline (321), the second cooling pipeline (322), the third cooling pipeline (323), the fourth cooling pipeline (324) and the fifth cooling pipeline (325) are respectively connected to the second branch road (34).

8. The air-floating main shaft with a waterway structure according to any one of claims 3 to 7, characterized in that: A second cavity (11) extending along the Z axis is formed inside the core shaft (1); the shaft assembly (2) further comprises: A cover plate (241) is snap-connected to the end cover (24); A water receiving pipe (201) is installed on the cover plate (241), one end of the water receiving pipe (201) is located outside the cover plate (241), and the other end of the water receiving pipe (201) is plugged into the second cavity (11). The water receiving pipe (201) is used to supply cutting fluid into the second cavity (11).

9. The air-floating main shaft with a waterway structure as claimed in claim 8, characterized in that: The shaft assembly (2) further comprises: A plug (202) is provided to plug the bottom end of the core shaft (1) where the water receiving pipe (201) is not provided; A liquid supply passage is arranged near the plug (202), a part of the liquid supply passage is arranged on the core shaft (1), another part of the liquid supply passage is arranged on the base plate (29) and between the base plate (29) and the core shaft (1), and both ends of the liquid supply passage are respectively connected to the second cavity (11) and the bottom end surface of the base plate (29).

10. The air-floating main shaft with a waterway structure as claimed in claim 9, characterized in that: The liquid supply passage comprises: A first passage (203) is arranged near the plug (202), the mandrel (1) is provided with the first passage (203), and the first passage (203) is communicated with the second cavity (11); a second passage (204), the second passage (204) being arranged between the base plate (29) and the core shaft (1), one end of the second passage (204) being in communication with the first passage (203); A first water through hole (205) is arranged inside the base plate (29), the first water through hole (205) extends along the radial direction of the core shaft (1), and the other end of the second passage (204) is connected to the first water through hole (205); A second water through hole is arranged on the base plate (29) and passes through the bottom end surface of the base plate (29), the second water through hole extends along the axial direction of the core shaft (1), and the second water through hole is connected to the first water through hole (205).

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