CN220659532U - Main shaft system for friction material increase manufacturing - Google Patents

Abstract

The application belongs to the technical field of friction material increase manufacturing, and provides a main shaft system for friction material increase manufacturing, which comprises a rotating shaft, a rotary driving device, a pushing shaft, a pushing driving device and a cooling liquid conveying device, wherein a pushing channel is formed in the rotating shaft; the rotary driving device is in transmission connection with the rotary shaft and is used for driving the rotary shaft to rotate; the pushing shaft is arranged in the pushing channel in a penetrating way, and a cooling channel is formed in the pushing shaft; the pushing driving device is in transmission connection with the pushing shaft; the cooling liquid conveying device is communicated with the cooling channel. The application provides a main shaft system for friction material increase manufacturing is through being linked together coolant liquid conveyor and cooling channel to coolant liquid conveyor can last to carry the coolant liquid in the cooling channel, so that push away the material axle and can dispel the heat immediately, avoid high temperature to lead to pushing away the material axle and appear wearing and tearing aggravate, effectively prolong whole main shaft system for friction material increase manufacturing's life.

Description

Main shaft system for friction material increase manufacturing

Technical Field

The application belongs to the technical field of friction material increase manufacturing, and particularly relates to a main shaft system for friction material increase manufacturing.

Background

Friction stir additive manufacturing (additive friction srir deposition, AFSD) is based on friction stir welding (friction stir welding, FSW) technology, and the material is made to be semi-solid by friction heat generation between the stirring head and the material, so as to realize solid phase metal stacking formation. Friction stir welding is an advanced welding technology, has the advantages of small deformation, high strength and the like, and utilizes a specially designed stirring head to be inserted into a part to be welded of a workpiece, and the generated friction heat enables metal at the part to be in a thermoplastic state through the stirring friction between the stirring head and the workpiece, and the material at the retreating side is filled with the advancing side under the pressure action of the stirring head, so that the part to be welded is welded into a whole. Friction stir additive manufacturing is based on the friction stir welding principle, material layer by layer stacking is achieved, and finally additive manufacturing is achieved.

In order to reduce the coaxiality of a rotating shaft and a pushing shaft, the inner side surface of the rotating shaft is tightly attached to the outer side surface of the pushing shaft, meanwhile, the pushing shaft needs to move back and forth along the length extending direction of the rotating shaft in a pushing channel in the pushing process, after long-time friction action, the pushing shaft can generate a large amount of heat, if the pushing shaft cannot be immediately cooled, slight expansion can occur on the pushing shaft due to high temperature, so that friction action between the pushing shaft and the rotating shaft is further increased, friction loss of the pushing shaft is increased, and the service life of the main shaft system for friction material increasing manufacturing is seriously shortened.

Disclosure of Invention

An object of the embodiment of the application is to provide a main shaft system for friction material increase manufacturing, so as to solve the technical problem that the main shaft system for friction material increase manufacturing in the prior art cannot instantly radiate heat of a pushing shaft, so that the friction loss of the pushing shaft is aggravated, and the service life of the main shaft system for friction material increase manufacturing is seriously shortened.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: provided is a spindle system for friction additive manufacturing, including: the rotary shaft is internally provided with a pushing channel; the rotary driving device is in transmission connection with the rotary shaft and is used for driving the rotary shaft to rotate; the pushing shaft is arranged in the pushing channel in a penetrating way and can move along the length extending direction of the pushing channel, and a cooling channel is formed in the pushing shaft; the pushing driving device is in transmission connection with the pushing shaft and is used for driving the pushing shaft to push the material rod in the pushing channel to a product to be processed; and the cooling liquid conveying device is communicated with the cooling channel.

The application provides a friction material increase makes with main shaft system's beneficial effect lies in: compared with the prior art, the main shaft system for friction material increase manufacturing is connected with the rotary shaft through the rotary driving device, the pushing driving device is connected with the pushing shaft in a transmission manner, the pushing shaft is arranged in the pushing channel of the rotary shaft in a penetrating manner, the main shaft system is installed at one end, close to a product to be processed, of the pushing channel before processing, the rotary shaft can drive the material rod to rotate under the driving of the rotary driving device, the pushing shaft can push the material rod to move towards the direction of the product to be processed under the driving of the pushing driving device, the material of the material rod is formed in the product to be processed, meanwhile, a cooling channel is formed in the pushing shaft, and the cooling liquid conveying device is communicated with the cooling channel, so that the cooling liquid can be continuously conveyed into the cooling channel, instant heat dissipation can be carried out on the pushing shaft, loss aggravation of the pushing shaft caused by high temperature is avoided, and the service life of the main shaft system for friction material increase manufacturing is effectively prolonged.

In one embodiment, the pushing shaft comprises a first shaft body and a second shaft body, one end of the first shaft body is in transmission connection with the pushing driving device, the other end of the first shaft body is in movable connection with the second shaft body, and the first shaft body is used for pushing the second shaft body to move along the length extending direction of the pushing channel.

In one embodiment, the cooling channel is formed in the first shaft body, and the cooling liquid conveying device is used for driving cooling liquid to circulate in the cooling channel.

In one embodiment, the rotary shaft is rotatably arranged in the shaft sleeve in a penetrating mode, the first cooling sleeve is sleeved on the outer peripheral side of the shaft sleeve, and the inner side surface of the first cooling sleeve and the outer side surface of the shaft sleeve are formed into a first cooling space in a surrounding mode.

In one embodiment, a second cooling space is formed on the shaft sleeve, a liquid inlet and a liquid outlet are formed on the shaft sleeve, and the liquid inlet and the liquid outlet are communicated with the second cooling space.

In one embodiment, the cooling device further comprises a box body, a mounting cavity is formed in the box body, the shaft sleeve is arranged in the mounting cavity, and the second cooling space is formed by the inner wall surface of the mounting cavity and the outer side surface of the shaft sleeve in a surrounding mode.

In one embodiment, the box body is provided with an observation window.

In one embodiment, the rotary shaft comprises a main shaft body and a machining tool bit, and the machining tool bit is detachably arranged at one end of the main shaft body, which is away from the pushing driving device.

In one embodiment, the machining tool further comprises a second cooling sleeve, the second cooling sleeve is arranged on the outer peripheral side of the machining tool bit, and a third cooling space is formed in the second cooling sleeve and used for cooling the machining tool bit.

In one embodiment, a ball spline shaft is arranged between the rotating shaft and the pushing shaft.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a spindle system for manufacturing a friction additive according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional block diagram of the friction additive manufacturing spindle system shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic perspective view of the rotary shaft, the rotary driving device, the pushing shaft and the cooling liquid conveying device shown in fig. 1.

Wherein, each reference sign in the figure:

10. a rotation shaft; 101. a pushing channel; 11. a main shaft body; 12. machining a cutter head;

20. a rotation driving device;

30. a pushing shaft; 301. a cooling channel; 31. a first shaft body; 32. a second shaft body; 33. a ball spline shaft;

40. a pushing driving device;

50. a cooling liquid conveying device; 51. a delivery tube;

60. a shaft sleeve; 601. A second cooling space;

70. a first cooling sleeve; 701. A first cooling space;

80. a case; 81. An observation window;

90. a second cooling sleeve; 901. and a third cooling space.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

Referring to fig. 1, fig. 2 and fig. 3 together, a spindle system for manufacturing a friction additive according to an embodiment of the present application will now be described. The main shaft system for friction additive manufacturing comprises a rotating shaft 10, a rotary driving device 20, a pushing shaft 30, a pushing driving device 40 and a cooling liquid conveying device 50.

A pushing channel 101 is formed in the rotating shaft 10; the rotary driving device 20 is in transmission connection with the rotary shaft 10, and the rotary driving device 20 is used for driving the rotary shaft 10 to rotate; the pushing shaft 30 is arranged in the pushing channel 101 in a penetrating way and can move along the length extending direction of the pushing channel 101, and a cooling channel 301 is formed in the pushing shaft 30; the pushing driving device 40 is in transmission connection with the pushing shaft 30, and the pushing driving device 40 is used for driving the pushing shaft 30 to push the material rod in the pushing channel 101 to the product to be processed; the cooling liquid conveying device 50 communicates with the cooling passage 301.

For example, as shown in fig. 1, 2 and 3, the length extending direction of the pushing channel 101 is consistent with the length extending direction of the rotating shaft 10, the rotating driving device 20 is used for driving the rotating shaft 10 to rotate around the central axis of the rotating shaft 10, the pushing shaft 30 is coaxially arranged with the rotating shaft 10, the length extending direction of the cooling channel 301 is consistent with the length extending direction of the pushing shaft 30, the pushing shaft 30 moves back and forth in the pushing channel 101 from one end of the pushing channel 101 close to the pushing driving device 40, the material rod to be rubbed is mounted in the pushing channel 101 from the other end, and the pushing driving device 40 drives the pushing shaft 30 to move along the length extending direction of the pushing channel 101 so as to push the material rod in the pushing channel 101 to the product to be processed. The cooling liquid conveying device 50 is used for conveying cooling liquid into the cooling channel 301, and the cooling liquid entering the cooling channel 301 can absorb heat generated in the pushing shaft 30.

Compared with the prior art, the main shaft system for friction material increase manufacturing in the application is in transmission connection with the rotary driving device 20 and the rotary shaft 10, the material pushing driving device 40 is in transmission connection with the material pushing shaft 30, and the material pushing shaft 30 is arranged in the material pushing channel 101 of the rotary shaft 10 in a penetrating mode, before machining, the main shaft system is firstly installed at one end, close to a product to be machined, of the material pushing channel 101, under the driving of the rotary driving device 20, the rotary shaft 10 can drive a material rod to rotate, under the driving of the material pushing driving device 40, the material pushing shaft 30 can push the material rod to move towards the direction of the product to be machined, so that the material of the material rod is molded in the product to be machined, meanwhile, a cooling channel 301 is formed in the material pushing shaft 30, and the cooling liquid conveying device 50 is communicated with the cooling channel 301, so that the cooling liquid conveying device 50 can continuously convey cooling liquid into the cooling channel 301, the material pushing shaft 30 can conduct instant heat dissipation, loss of the material pushing shaft 30 is prevented from being caused by high temperature, and the service life of the main shaft system for friction material increase manufacturing is effectively prolonged.

In an embodiment of the present application, referring to fig. 2 and 3, the pushing shaft 30 includes a first shaft body 31 and a second shaft body 32, one end of the first shaft body 31 is in transmission connection with the pushing driving device 40, the other end of the first shaft body is detachably connected with the second shaft body 32, the second shaft body 32 is disposed in the pushing channel 101 in a penetrating manner, and the first shaft body 31 is used for pushing the second shaft body 32 to move along the length extending direction of the pushing channel 101.

Specifically, the first shaft body 31 is disposed in the length extending direction of the second shaft body 32, meanwhile, the first shaft body 31 and the second shaft body 32 are coaxially disposed, in the actual friction stir additive manufacturing process, the first shaft body 31 is mainly used for transmitting axial thrust to the second shaft body 32 and not transmitting torsion to the second shaft body 32, and the first shaft body 31 receives torsion transmitted from the rotating shaft 10 in addition to thrust from the pushing driving device 40 in the actual working process, meanwhile, high temperature occurs between the first shaft body 31 and the parts on the outer periphery side due to a large amount of friction, so that abrasion conditions between the first shaft body 31 and the second shaft body 32 are different, and service lives of the first shaft body 31 and the second shaft body 32 are different. Through setting up the structure that pushes away material axle 30 to first axis body 31 and second axis body 32 concatenation, can change the serious part of wearing and tearing, need not all change whole pushing away material axle 30, reduction in production cost.

Further, since the second shaft body 32 is directly contacted with the material rod, and the material rod needs to continuously generate high-strength friction with the product to be processed in the processing process, the temperature of the material rod is far higher than the temperature of the first shaft body 31 and the second shaft body 32, and the material pushing shaft 30 is in a split connection structure, so that the high temperature in the material rod can be prevented from being rapidly transferred into the first shaft body 31 through the second shaft body 32, and the heat diffusion is slowed down.

In one embodiment of the present application, referring to fig. 2 and fig. 3, the cooling channel 301 is formed in the first shaft 31, and the cooling liquid conveying device 50 is used for driving the cooling liquid to circulate in the cooling channel 301.

Specifically, the length extending direction of the cooling passage 301 coincides with the length extending direction of the first shaft body 31, and the cooling passage 301 is penetratingly provided in the first shaft body 31. When the first shaft body 31 and the second shaft body 32 are connected to each other, the cooling passage 301 has an open structure at one end, and the cooling liquid feeding device 50 feeds the cooling liquid into the cooling passage 301 from the open position. The cooling liquid conveying device 50 is provided with a conveying pipe 51, the outer diameter of the conveying pipe 51 is smaller than the inner diameter of the cooling channel 301, the cooling liquid conveying device 50 can convey cooling liquid into the cooling channel 301 through the conveying pipe 51, in the cooling liquid conveying process, the flowing route of the cooling liquid along the inner wall surface of the conveying pipe 51 is a liquid inlet route, the annular area formed by the outer wall surface of the conveying pipe 51 and the inner wall surface of the cooling channel 301 in a surrounding mode is a liquid outlet route of the cooling liquid flowing back to the cooling liquid conveying device 50, and by continuously conveying the cooling liquid into the cooling channel 301, the cooling liquid can circulate in the first shaft body 31, and accordingly heat dissipation is continuously carried out for the pushing shaft 30.

In one embodiment of the present application, referring to fig. 2, 3 and 4, the spindle system for manufacturing a friction additive further includes a shaft sleeve 60 and a first cooling sleeve 70, the rotating shaft 10 is rotatably inserted into the shaft sleeve 60, the first cooling sleeve 70 is sleeved on the outer peripheral side of the shaft sleeve 60, and an inner side surface of the first cooling sleeve 70 and an outer side surface of the shaft sleeve 60 are configured to form a first cooling space 701.

Specifically, the shaft body is disposed at the outer circumferential side of the rotation shaft 10, and the shaft sleeve 60 is kept stationary during the processing, and the rotation shaft 10 is rotated at a high speed, so that a plurality of bearings are disposed between the shaft sleeve 60 and the rotation shaft 10, and heat generated from the rotation shaft 10 rotating at a high speed is transferred to the shaft sleeve 60 through the bearings, so that the shaft sleeve 60 also needs to conduct heat dissipation, thereby absorbing heat in the rotation shaft 10 more efficiently, and further improving the heat dissipation efficiency of the whole spindle system for friction additive manufacturing. In the present embodiment, the first cooling space 701 is coated on the outer peripheral side of the sleeve 60, and the cooling liquid is conveyed into the first cooling space 701 and then surrounds the outer side surface of the sleeve 60, so that the heat in the sleeve 60 can be effectively absorbed.

Further, the first cooling sleeve 70 is provided with a liquid inlet and a liquid outlet, so that the cooling liquid can be continuously conveyed from the liquid inlet to the first cooling space 701, and simultaneously the cooling liquid is discharged from the liquid outlet, so that the cooling liquid in the first cooling space 701 can circularly flow, and the heat dissipation efficiency is further improved.

In an embodiment of the present application, referring to fig. 2, 3 and 4, a second cooling space 601 is formed on the shaft sleeve 60, and a liquid inlet and a liquid outlet are formed on the shaft sleeve 60, and both the liquid inlet and the liquid outlet are communicated with the second cooling space 601.

Specifically, the second cooling space 601 is similar to the aforementioned first cooling space 701, and the first cooling space 701 and the second cooling space 601 can cooperate to form a more comprehensive heat dissipation to the sleeve 60. By providing the second cooling space 601 on the sleeve 60, when heat dissipation needs to be performed on the sleeve 60, the cooling liquid can be continuously transferred into the second cooling space 601 from the liquid inlet of the sleeve 60, and then the cooling liquid is discharged from the liquid outlet of the sleeve 60, so that the cooling liquid can circulate in the second cooling space 601, and heat dissipation is continuously performed on the sleeve 60.

In one embodiment of the present application, referring to fig. 2 and 3 together, the spindle system for manufacturing a friction additive further includes a housing 80, a mounting cavity is formed in the housing 80, the shaft sleeve 60 is disposed in the mounting cavity, and the second cooling space 601 is formed by an inner wall surface of the mounting cavity and an outer side surface of the shaft sleeve 60.

Specifically, the case 80 can provide the mounting and fixing positions for the shaft sleeve 60, the rotary driving device 20 and the pushing driving device 40, and in this embodiment, the second cooling space 601 is formed by the inner wall surface of the mounting cavity and the outer side surface of the shaft sleeve 60, so that the second cooling space 601 is also covered on the outer periphery side of the shaft sleeve 60, and the cooling liquid can be conveyed into the second cooling space 601 to be covered on the outer side surface of the shaft sleeve 60, so as to effectively absorb the heat in the shaft sleeve 60.

In one embodiment of the present application, referring to fig. 1, a box 80 is provided with a viewing window 81.

Specifically, the rotation driving device 20 and the rotation shaft 10 are driven by the belt driving structure, and meanwhile, the observation window 81 on the box 80 is correspondingly arranged with the belt driving structure, and the operation condition of the belt driving structure can be clearly observed by arranging the observation window 81 on the box 80, and the belt driving structure can be timely and efficiently maintained or repaired in daily.

In one embodiment of the present application, referring to fig. 4, the rotary shaft 10 includes a main shaft body 11 and a machining tool bit 12, where the machining tool bit 12 is detachably disposed at an end of the main shaft body 11 facing away from the pushing driving device 40.

Specifically, the main shaft body 11 and the processing tool bit 12 are detachably mounted together through the fastener, the processing tool bit 12 rotates along with the rotation of the main shaft body 11, meanwhile, a pushing channel 101 for mounting a material rod is penetratingly arranged in the processing tool bit 12, the second shaft body 32 pushes the material rod from the other end of the material charging through hole, the material charging through hole can limit the material rod, and the processing tool bit 12 can drive the material rod to rotate together. Through setting up rotation axis 10 as the split formula structure of main shaft body 11 and processing tool bit 12, can change different main shaft handle of a knife according to the different stick sizes of production, for example, the different specification stick accessible change processing tool bit 12 and second shaft body 32 such as 10x10x200mm, 15x15x200mm, 20x20x200mm, 25x25x200mm can use, need not to change other spare part, the adaptation that can improve different types material sticks is used greatly.

In an embodiment of the present application, referring to fig. 1 to 4, the spindle system for friction additive manufacturing further includes a second cooling sleeve 90, the second cooling sleeve 90 is disposed on an outer peripheral side of the machining tool bit 12, and a third cooling space 901 is formed in the second cooling sleeve 90, and the third cooling space 901 is used for cooling the machining tool bit 12.

Specifically, the second cooling sleeve 90 operates on the same principle as the first cooling sleeve 70, and the second cooling sleeve 90 is used for machining the tool bit 12, so that a lot of heat is generated from the rod under friction with the product to be machined during machining, and at the same time, the rod is connected to the machining tool bit 12, so that the heat in the rod is transferred to the machining tool bit 12. In the present embodiment, the second cooling sleeve 90 has a circular ring structure, and the second cooling sleeve 90 is wrapped around the outer periphery of the machining bit 12, so that the cooling liquid can effectively absorb heat in the machining bit 12 by supplying the cooling liquid into the third cooling space 901.

Further, the second cooling sleeve 90 is provided with a liquid inlet and a liquid outlet, so that the cooling liquid can be continuously conveyed from the liquid inlet to the third cooling space 901, and meanwhile, the cooling liquid is discharged from the liquid outlet, so that the cooling liquid in the third cooling space 901 can circularly flow, and the heat dissipation efficiency is further improved.

In one embodiment of the present application, referring to fig. 2 and 3, a ball spline shaft 33 is disposed between the rotating shaft 10 and the pushing shaft 30.

Specifically, since high coaxiality is required between the rotary shaft 10 and the pushing shaft 30, excessive fit or interference fit is required between the rotary shaft 10 and the pushing shaft 30, but when the axis of the pushing shaft 30 moves, a large friction force is generated with the rotary shaft 10. The ball spline shaft 33 is arranged between the rotating shaft 10 and the pushing shaft 30, so that friction force between the rotating shaft 10 and the pushing shaft 30 in the axial direction can be effectively reduced, and loss of kinetic energy in the running process of equipment is reduced.

The foregoing description of the preferred embodiments of the present utility model has been provided for the purpose of illustrating the general principles of the present utility model and is not to be construed as limiting the scope of the utility model in any way. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model, and other embodiments of the present utility model as will occur to those skilled in the art without the exercise of inventive faculty, are intended to be included within the scope of the present utility model.

Claims (10)

1. A spindle system for friction additive manufacturing, comprising:

the rotary shaft is internally provided with a pushing channel;

the rotary driving device is in transmission connection with the rotary shaft and is used for driving the rotary shaft to rotate;

the pushing shaft is arranged in the pushing channel in a penetrating way and can move along the length extending direction of the pushing channel, and a cooling channel is formed in the pushing shaft;

the pushing driving device is in transmission connection with the pushing shaft and is used for driving the pushing shaft to push the material rod in the pushing channel to a product to be processed;

and the cooling liquid conveying device is communicated with the cooling channel.

2. The friction additive manufacturing spindle system according to claim 1, wherein: the pushing shaft comprises a first shaft body and a second shaft body, one end of the first shaft body is in transmission connection with the pushing driving device, the other end of the first shaft body is detachably connected with the second shaft body, and the second shaft body penetrates through the pushing channel.

3. The friction additive manufacturing spindle system according to claim 2, wherein: the cooling channel is formed in the first shaft body, and the cooling liquid conveying device is used for driving cooling liquid to circularly flow in the cooling channel.

4. The friction additive manufacturing spindle system according to claim 1, wherein: the cooling device comprises a shaft sleeve, a rotating shaft and a first cooling sleeve, wherein the rotating shaft is rotatably arranged in the shaft sleeve in a penetrating mode, the first cooling sleeve is sleeved on the outer peripheral side of the shaft sleeve, and the inner side surface of the first cooling sleeve and the outer side surface of the shaft sleeve are formed into a first cooling space in a surrounding mode.

5. The friction additive manufacturing spindle system according to claim 4, wherein: the shaft sleeve is provided with a second cooling space, the shaft sleeve is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the second cooling space.

6. The friction additive manufacturing spindle system according to claim 5, wherein: the cooling device comprises a shaft sleeve, and is characterized by further comprising a box body, wherein an installation cavity is formed in the box body, the shaft sleeve is arranged in the installation cavity, and the second cooling space is formed by the inner wall surface of the installation cavity and the outer side surface of the shaft sleeve in a surrounding mode.

7. The friction additive manufacturing spindle system according to claim 6, wherein: and an observation window is formed in the box body.

8. A spindle system for friction additive manufacturing according to any one of claims 1-7, wherein: the rotary shaft comprises a main shaft body and a machining tool bit, and the machining tool bit is detachably arranged at one end, deviating from the pushing driving device, of the main shaft body.

9. The friction additive manufacturing spindle system as set forth in claim 8, wherein: the machining tool further comprises a second cooling sleeve, the second cooling sleeve is arranged on the outer peripheral side of the machining tool bit, and a third cooling space is formed in the second cooling sleeve.

10. A spindle system for friction additive manufacturing according to any one of claims 1-7, wherein: and a ball spline shaft is arranged between the rotating shaft and the pushing shaft.