Group shaft device and system for single-shaft-to-multi-shaft machining

Abstract

The utility model discloses a group shaft device and system for single-shaft to multi-shaft machining, the group shaft device for single-shaft to multi-shaft machining comprises a single-shaft assembly and a multi-shaft assembly, the single-shaft assembly comprises an upper cover, a cutter handle shaft, a heat dissipation piece and a power gear, the cutter handle shaft is rotatably connected to the upper cover in a penetrating mode, and the power gear is connected to the cutter handle shaft in a penetrating mode. The heat dissipation piece is fixedly connected into the upper cover, and the power gear is fixedly connected to the outer wall face of the cutter handle shaft. The multi-shaft assembly comprises a lower base and a plurality of working shaft systems, and each working shaft system is rotatably connected to the lower base in a penetrating manner; the lower base is fixedly connected with the upper cover, the heat dissipation piece is clamped between the lower base and the upper cover, and the power gear is in transmission connection with each working shaft system. The utility model has the advantages of small size, strong versatility, high flexibility and the like.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, and in particular to a multi-axis machining device and system for single-axis to multi-axis machining. Background Technology

[0002] With the increasing demands for processing efficiency in recent years, the technology of simultaneous multi-hole machining on CNC machine tools has gained more and more attention. Currently, multi-axis devices, commonly known as multi-hole drills or multi-spindle drilling machines, are available on the market. While they can significantly improve processing efficiency for multi-hole machining, they lack versatility, are only suitable for machining certain parts, and have limited flexibility. Therefore, there is an urgent need for a small, versatile, and highly flexible multi-axis device for single-axis to multi-axis machining on CNC machine tools.

[0003] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a small, versatile, and highly flexible single-axis to multi-axis machining multi-axis device and system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, this utility model discloses a multi-axis machining device for single-axis to multi-axis machining, comprising a single-axis assembly and a multi-axis assembly, wherein:

[0007] The single-axis assembly includes an upper cover, a tool holder shaft, a heat sink, and a drive gear. The tool holder shaft is rotatably connected to the upper cover, the heat sink is fixedly connected inside the upper cover, and the drive gear is fixedly connected to the outer wall surface of the tool holder shaft.

[0008] The multi-axis assembly includes a lower base and multiple working shaft systems, each of which is rotatably connected to the lower base.

[0009] The lower base is fixedly connected to the upper cover, wherein the heat sink is sandwiched between the lower base and the upper cover, and the power gear is respectively connected to each of the working shaft systems.

[0010] Preferably, the upper cover has an air inlet and an air outlet, and the air inlet and the air outlet are respectively connected to the heat dissipation component.

[0011] Preferably, a silencer valve is provided on the air outlet.

[0012] Preferably, the single-axis assembly includes a plurality of first fastening screws, the heat sink includes a heat sink base plate and a plurality of heat sink fins, the heat sink base plate is fixedly connected to the upper cover by the first fastening screws, and the plurality of heat sink fins are respectively arranged vertically and parallel to each other on the side of the heat sink base plate away from the lower base.

[0013] Preferably, the single-axis assembly includes a first bearing, the first A wall of the first bearing abutting against the tool holder shaft, the first B wall of the first bearing abutting against the upper cover, and the first A wall and the first B wall of the first bearing being rotatably connected, wherein the two ends of the first B wall of the first bearing abutting between the upper cover and the heat sink.

[0014] Preferably, the single-axis assembly further includes a first bushing, a first fastening nut, and a second fastening nut. The first bushing, the first fastening nut, the power gear, and the second fastening nut are sequentially sleeved on the tool holder shaft. The first bushing abuts against the first A wall surface of the first bearing near the lower base and between the first fastening nut and the first fastening nut. The power gear abuts against the first fastening nut and the second fastening nut.

[0015] Preferably, the working shaft system includes a working shaft, a second bearing, a second bushing, a working gear, and a third fastening nut. The lower end of the working shaft is used to connect to a cutting tool, and the working shaft is provided with a first stepped surface. The second bearing, the second bushing, the working gear, and the third fastening nut are sequentially sleeved on the upper end of the working shaft. The second A wall surface of the second bearing abuts against the working shaft, and the second B wall surface of the second bearing abuts against the lower base. The second A wall surface and the second B wall surface of the second bearing are rotatably connected. The two ends of the second A wall surface of the second bearing abut between the first stepped surface and the second bushing. The working gear abuts between the second bushing and the third fastening nut. The power gear is drively connected to the working gear of each of the working shaft systems.

[0016] Preferably, the plurality of working shaft systems are divided into multiple groups of working shaft systems, each group of working shaft systems includes a plurality of working shaft systems, and the axis of each working shaft system in each group of working shaft systems is located on the same circle with the axis of the power gear as the center, while the axis of the working shaft systems in different groups of working shaft systems is located on different circles with the axis of the power gear as the center;

[0017] The multi-axis assembly also includes multiple link shaft systems, each of which is rotatably connected to the lower base, wherein each link shaft system is respectively driven between two working shaft systems located in two groups of working shaft systems.

[0018] Preferably, the link shaft system includes a link shaft, a third bearing, a third bushing, a link gear, and a fourth fastening nut. The lower end of the link shaft has a second stepped surface. The third bearing, the third bushing, the link gear, and the fourth fastening nut are sequentially sleeved on the upper end of the link shaft. The third A wall surface of the third bearing abuts against the link shaft, and the third B wall surface of the third bearing abuts against the lower base. The third A wall surface and the third B wall surface of the third bearing are rotatably connected. The two ends of the third A wall surface of the third bearing abut between the second stepped surface and the third bushing. The link gear abuts between the third bushing and the fourth fastening nut. The link gear is driven between two working shaft systems located in two sets of working shaft systems.

[0019] Secondly, this utility model discloses a multi-axis machining system for single-axis to multi-axis machining, including a spindle and the multi-axis machining device for single-axis to multi-axis machining described in the first aspect. The upper end of the tool holder shaft is rotatably connected to the spindle. A positioning block protrudes from the lower end face of the spindle. A positioning groove is formed at the lower end of the positioning block. A limiting block protrudes from the upper end face of the upper cover. The limiting block is engaged in the positioning groove.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: The single-axis to multi-axis machining multi-axis device and system disclosed in this utility model have a power gear connected to the tool holder shaft in the single-axis assembly and a multiple working shaft system in the multi-axis assembly, so as to connect the single-axis transmission to multiple working shaft systems, and further realize single-axis to multi-axis machining. A heat sink is also connected to the upper cover to dissipate heat and cool the transmission part in the single-axis to multi-axis process. The entire single-axis to multi-axis machining multi-axis device has the advantages of small size, strong versatility and high flexibility.

[0021] In a further design, the multi-axis assembly also includes a link shaft system, which allows more working axes to operate simultaneously, thus broadening its applicability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the multi-axis machining system for single-axis to multi-axis machining disclosed in a preferred embodiment of this utility model;

[0023] Figure 2 This is a cross-sectional schematic diagram of a multi-axis device for single-axis to multi-axis machining according to a preferred embodiment of the present invention;

[0024] Figure 3This is a cross-sectional schematic diagram of a single-axis component in a multi-axis machining group device according to a preferred embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the rotational cross-section of the multi-axis component in the multi-axis machining device for single-axis to multi-axis machining according to a preferred embodiment of the present invention.

[0026] Figure 5 yes Figure 4 A cross-sectional schematic diagram of the central working shaft system;

[0027] Figure 6 This is a bottom view of a multi-axis machining device for single-axis to multi-axis machining according to a preferred embodiment of the present invention;

[0028] Figure 7 yes Figure 4 A cross-sectional schematic diagram of the central link shaft system.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100. Multi-axis machining array;

[0031] 10. Single-axis assembly; 11. Top cover; 111. Air inlet; 112. Air outlet; 113. Limiting block; 114. Screw countersunk hole; 12. Tool holder shaft; 13. Heat sink; 131. Heat sink base plate; 132. Heat sink fin; 14. Power gear; 15. First fastening screw; 16. First bearing; 17. First bushing; 18. First fastening nut; 19. Second fastening nut;

[0032] 20. Multi-axis assembly; 21. Lower base; 211. Threaded hole; 22. Working shaft system; 221. Working shaft; 2211. First stepped surface; 222. Second bearing; 223. Second bushing; 224. Working gear; 225. Third fastening nut; 23. Link shaft system; 231. Link shaft; 2311. Second stepped surface; 232. Third bearing; 2321. Third A bearing; 2322. Third B bearing; 2323. Inner spacer; 2324. Outer spacer; 233. Third bushing; 234. Link gear; 235. Fourth fastening nut;

[0033] 30. Second fastening screw;

[0034] 40. Cutting tools; 41. Nuts; 42. Spring collets;

[0035] 200, spindle; 201, positioning block; 2011, positioning groove; 202, spindle interface. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of this utility model.

[0037] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be used for both fixing and circuit / signal connectivity.

[0038] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] like Figure 1 The figure shows a multi-axis machining system for single-axis to multi-axis machining disclosed in a preferred embodiment of the present invention, including a multi-axis machining device 100 and a spindle 200. The multi-axis machining device 100 includes a single-axis assembly 10 and a multi-axis assembly 20.

[0041] like Figure 2 As shown, the single-axis assembly 10 includes an upper cover 11, a tool holder shaft 12, a heat sink 13, and a drive gear 14. The tool holder shaft 12 is rotatably connected to the upper cover 11, the heat sink 13 is fixedly connected inside the upper cover 11, and the drive gear 14 is fixedly connected to the outer wall of the tool holder shaft 12. The multi-axis assembly 20 includes a lower base 21 and multiple working shaft systems 22. Each working shaft system 22 is rotatably connected to the lower base 21. The lower base 21 is fixedly connected to the upper cover 11. The heat sink 13 is sandwiched between the lower base 21 and the upper cover 11, and the drive gear 14 is respectively connected to each working shaft system 22 for transmission.

[0042] The upper end of the tool holder shaft 12 is rotatably connected to the spindle interface 202 of the spindle 200. The lower end face of the spindle 200 has a protruding positioning block 201. The lower end of the positioning block 201 has a positioning groove 2011. The upper end face of the upper cover 11 has a protruding limiting block 113. The limiting block 113 is locked in the positioning groove 2011 to prevent the upper cover 11 and the lower base 21 from rotating together with the spindle interface 202. That is, during the operation, the spindle interface 202 drives the tool holder shaft 11 and the working shaft system 22 to rotate, while the upper cover 11 and the lower base 21 do not rotate.

[0043] Combination Figure 3 The single-axis assembly 10 also includes multiple first fastening screws 15. The heat sink 13 includes a heat sink base 131 and multiple heat sinks 132. The heat sink base 131 is fixedly connected to the upper cover 11 by multiple first fastening screws 15. The multiple heat sinks 132 are respectively arranged vertically and parallel to each other on the side of the heat sink base 131 away from the lower base 21. The multiple heat sinks 132 are in contact with the flowing airflow to transfer heat and achieve the purpose of internal cooling. The upper cover 11 has an air inlet 111 and an air outlet 112, which are respectively connected to the multiple heat sinks 132. A silencer valve is provided on the air outlet 112. The air inlet 111 allows high-pressure gas from the outside to enter the upper cover 11. The gas flows through the interior and carries away the heat generated by the high-speed rotation and friction of the internal parts, thus cooling the parts. The silencer valve reduces the noise when the gas comes out at the air outlet 112. In addition, the heat dissipation substrate 131 can also be used to isolate the external high-speed airflow and prevent water vapor and other impurities in the external high-speed airflow from entering the device and affecting the precision of gears and bearings.

[0044] The single-axis assembly 10 also includes a first bearing 16, a first bushing 17, a first fastening nut 18, and a second fastening nut 19. The first A wall of the first bearing 16 abuts against the tool holder shaft 12, and the first B wall of the first bearing 16 abuts against the upper cover 11. The first A wall and the first B wall of the first bearing 16 are rotatably connected. The two ends of the first B wall of the first bearing 16 abut against the upper cover 11 and the heat dissipation substrate 131, that is, the first bearing 16 is clamped and fixed to the upper cover 11 by the heat dissipation substrate 131. The first bushing 17, the first fastening nut 18, the drive gear 14, and the second fastening nut 19 are sequentially sleeved on the tool holder shaft 12, such that the first bushing 17 abuts against the first A wall of the first bearing 16 near the lower base 21 between the first fastening nut 18 and the first fastening nut 19, and the drive gear 14 abuts against the first fastening nut 18 and the second fastening nut 19. The first fastening nut 18 presses against the first bushing 17, and the first bushing 17 presses against the first A wall surface of the first bearing 16, so that the first bearing 16 is fixed on the tool holder shaft 12.

[0045] In this specific embodiment, the first bearing 16 is a radial bearing divided into an inner and an outer part. The inner and outer parts of the first bearing 16 are connected by ball bearings. The first A wall surface is the inner wall surface of the first bearing 16, and the first B wall surface is the outer wall surface of the first bearing 16.

[0046] like Figure 4 and Figure 5 The working shaft system 22 includes a working shaft 221, a second bearing 222, a second bushing 223, a working gear 224, and a third fastening nut 225. The lower end of the working shaft 221 is used to connect the cutting tool 40, and the working shaft 221 is provided with a first stepped surface 2211. The second bearing 222, the second bushing 223, the working gear 224, and the third fastening nut 225 are sequentially sleeved on the upper end of the working shaft 221. The second A wall surface of the second bearing 222 abuts against the working shaft 221, and the second B wall surface of the second bearing 222 abuts against the lower base 21. The second A wall surface and the second B wall surface of the second bearing 222 are rotatably connected. The two ends of the second A wall surface of the second bearing 222 abut between the first stepped surface 2211 and the second bushing 223. The working gear 224 abuts between the second bushing 223 and the third fastening nut 225. The power gear 14 is connected to the working gear 224 of each working shaft system 22. The third fastening nut 225 is threadedly installed on the working shaft 221 to press the working gear 224, the second bushing 223, and the second bearing 222 onto the working shaft 221. The second B wall surface of the second bearing 222 is fixed on the lower base 21. During operation, the working gear 224 receives power and drives the second bearing 222 to rotate. In this embodiment, the second bearing 222 is also a radial bearing with an inner and an outer portion. The inner and outer portions of the second bearing 222 are connected by ball bearings. The second A wall surface is the inner wall surface of the second bearing 222, and the second B wall surface is the outer wall surface of the second bearing 222.

[0047] The cutting tool 40 is installed in the spring collet 42, and the nut 41 is fixed to the working shaft 221 by threaded engagement, so as to clamp and fix the cutting tool 40 in the working shaft 221. In addition, the second bearing 223 includes three angular contact bearings, which are installed on the working shaft 221 by DBD (back-to-back angular contact bearing mounting) pairing method.

[0048] In this embodiment, as Figure 6As shown, the multiple working shaft systems 22 are divided into two groups of working shaft systems. Each group of working shaft systems includes multiple working shaft systems 22. The axis of each working shaft system 22 in each group is located on the same circle with the axis of the power gear 14 as the center. The axis of the working shaft systems 22 in different groups of working shaft systems is located on different circles with the axis of the power gear 14 as the center. The multi-axis assembly 20 also includes multiple link shaft systems 23. Each link shaft system 23 is rotatably connected to the lower base 21. Each link shaft system 23 is driven between two working shaft systems 22 located in the two groups of working shaft systems.

[0049] Specifically, such as Figure 7 As shown, the link shaft system 23 includes a link shaft 231, a third bearing 232, a third bushing 233, a link gear 234, and a fourth fastening nut 235. The lower end of the link shaft 231 is provided with a second stepped surface 2311. The third bearing 232, the third bushing 233, the link gear 234, and the fourth fastening nut 235 are sequentially sleeved on the upper end of the link shaft 231. The third A wall surface of the third bearing 232 abuts against the link shaft 231, and the third B wall surface of the third bearing 232 abuts against the lower base 21. The third A wall surface and the third B wall surface of the third bearing 232 are rotatably connected. The two ends of the third A wall surface of the third bearing 232 abut between the second stepped surface 2311 and the third bushing 233. The link gear 234 abuts between the third bushing 233 and the fourth fastening nut 235. The link gear 234 is drively connected between two working shaft systems 22 located in two sets of working shaft systems.

[0050] In this embodiment, the third bearing 232 is also a radial bearing divided into an inner and an outer part. The inner and outer parts of the third bearing 232 are connected by ball bearings. The third A wall surface is the inner wall surface of the third bearing 232, and the third B wall surface is the outer wall surface of the third bearing 232.

[0051] The fourth fastening nut 235 is installed with the belt shaft 231 through a threaded engagement, pressing the belt gear 234, the third bushing 233, and the third bearing 232 onto the belt shaft 231. The third bearing 232 includes a third A bearing 2321, a third B bearing 2322, an inner spacer 2323, and an outer spacer 2324. The inner spacer 2323 and the outer spacer 2324 are respectively pressed between the third A bearing 2321 and the third B bearing 2322. The inner spacer 2323 contacts the inner wall surface of the third A bearing 2321 and the third B bearing 2322, respectively, and the outer spacer 2324 contacts the outer wall surface of the third A bearing 2321 and the third B bearing 2322, respectively. The outer wall surfaces of the third A bearing 2321 and the third B bearing 2322, as well as the outer spacer 2324, are fixedly connected to the lower base 21. During operation, the belt gear 234 receives power and drives the belt shaft 231 to rotate.

[0052] In this embodiment, combined with Figures 2 to 4 The upper cover 11 has a countersunk screw hole 114, and the lower base 21 has a threaded hole 211. The second fastening screw 30 passes through the countersunk screw hole 114 and is fixedly connected to the threaded hole 211 to fix the upper cover 11 and the lower base 21 together; that is, the upper cover 11 and the lower base 21 are fixedly connected by the second fastening screw 30. Figure 6 The working gear 224 of the inner working shaft system 22 directly contacts the power gear 14 to obtain rotational power. The working gear 224 of the outer working shaft system 22 meshes with the link gear 234 of the link shaft system 23 installed in the middle. The power is transmitted to the working gear 224 of the outer working shaft system 22 through the link shaft system 23, driving the outer working shaft system 22.

[0053] In one specific embodiment, the multi-axis machining device 100 consists of a single-axis assembly 10 and a multi-axis assembly 20. The single-axis assembly 10 consists of an upper cover 11, a tool holder shaft 12, a heat sink 13, a power gear 14, a first fastening screw 15, a first bearing 16, a first bushing 17, a first fastening nut 18, and a second fastening nut 19. The multi-axis assembly 20 consists of a lower base 21, multiple working axis systems 22, and multiple link axis systems 23, forming a small device on a CNC machining tool, which has the advantages of strong versatility and high flexibility.

[0054] The preferred embodiment of this utility model discloses a multi-axis device and system for single-axis to multi-axis machining. The power gear 14 connected to the tool holder shaft 12 in the single-axis assembly 10 is respectively connected to multiple working shaft systems 22 in the multi-axis assembly 20 to transmit power from the single axis to multiple working shaft systems, thereby realizing single-axis to multi-axis machining. A heat sink 13 is also connected to the upper cover to dissipate heat and cool the transmission parts during the single-axis to multi-axis process. The entire multi-axis device for single-axis to multi-axis machining has the advantages of small size, strong versatility, and high flexibility.

[0055] The background section of this utility model may include background information about the problems or circumstances surrounding the present utility model, rather than a description of prior art by others. Therefore, the content included in the background section is not an admission of prior art by the applicant.

[0056] The above description, in conjunction with specific / preferred embodiments, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the present invention to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the concept of the present invention, and all such substitutions or modifications should be considered within the protection scope of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the 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 can be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the scope defined by the appended claims.

Claims

1. A group shaft device of single shaft rotation and multi shaft processing, characterized by, The single-shaft assembly and the multi-shaft assembly are provided. The single-shaft assembly comprises an upper cover, a tool shank shaft, a heat dissipation member and a power gear, the tool shank shaft is rotatably connected to the upper cover, the heat dissipation member is fixedly connected to the upper cover, and the power gear is fixedly connected to the outer wall surface of the tool shank shaft. The multi-shaft assembly comprises a lower base and a plurality of working shaft systems, each working shaft system is rotatably connected to the lower base. The lower base is fixedly connected to the upper cover, the heat dissipation member is clamped between the lower base and the upper cover, and the power gear is drivingly connected to each working shaft system.

2. The multi-axis machining gang tool head apparatus of claim 1, wherein, An air inlet and an air outlet are formed in the upper cover, and the air inlet and the air outlet are in communication with the heat dissipation member.

3. The gang-axle apparatus of claim 2, wherein, The air outlet is provided with a silencer.

4. The multi-axis machining gang tool head apparatus of claim 1, wherein, The single-shaft assembly comprises a plurality of first fastening screws, the heat dissipation member comprises a heat dissipation base plate and a plurality of heat dissipation fins, the heat dissipation base plate is fixedly connected to the upper cover by the first fastening screws, and a plurality of heat dissipation fins are vertically arranged on the side of the heat dissipation base plate away from the lower base.

5. The multi-axis machining gang tool head apparatus of claim 4, wherein, The single-shaft assembly comprises a first bearing, a first A wall surface of the first bearing abuts against the tool shank shaft, a first B wall surface of the first bearing abuts against the upper cover, and the first A wall surface and the first B wall surface of the first bearing are rotatably connected, wherein the two ends of the first B wall surface of the first bearing abut between the upper cover and the heat dissipation fins.

6. The gang-axle apparatus of claim 5, wherein, The single-shaft assembly further comprises a first shaft sleeve, a first fastening nut and a second fastening nut, the first shaft sleeve, the first fastening nut, the power gear and the second fastening nut are sequentially sleeved on the tool shank shaft, the first shaft sleeve abuts between the first A wall surface of the first bearing close to the lower base and the first fastening nut, and the power gear abuts between the first fastening nut and the second fastening nut.

7. The uniaxial-to-multiprocessing gang tool apparatus of claim 1 wherein, The working shaft system comprises a working shaft, a second bearing, a second shaft sleeve, a working gear and a third fastening nut, the lower end of the working shaft is used for connecting a tool, the working shaft is provided with a first step surface, the second bearing, the second shaft sleeve, the working gear and the third fastening nut are sequentially sleeved on the upper end of the working shaft, a second A wall surface of the second bearing abuts against the working shaft, a second B wall surface of the second bearing abuts against the lower base, the second A wall surface and the second B wall surface of the second bearing are rotatably connected, the two ends of the second A wall surface of the second bearing abut between the first step surface and the second shaft sleeve, and the working gear abuts between the second shaft sleeve and the third fastening nut, wherein the power gear is drivingly connected to the working gear of each working shaft system.

8. The uniaxial-to-multiprocessing gang tool apparatus of claim 1 wherein, The plurality of working shaft systems are divided into a plurality of working shaft system groups, each working shaft system group comprises a plurality of working shaft systems, the shaft centers of the working shaft systems in each working shaft system group are located on the same circle with the shaft center of the power gear as the center, and the shaft centers of the working shaft systems in different working shaft system groups are located on different circles with the shaft center of the power gear as the center. The multi-shaft assembly further comprises a plurality of tie shafts, each of which is rotatably connected to the lower base, and each of which is drivingly connected between two working shafts respectively located in two groups of working shaft groups.

9. The uniaxial-to-multiprocessing gang tool apparatus of claim 8, wherein, The tie shaft comprises a tie shaft, a third bearing, a third shaft sleeve, a tie gear and a fourth fastening nut, the lower end of the tie shaft is provided with a second stepped surface, the third bearing, the third shaft sleeve, the tie gear and the fourth fastening nut are sequentially sleeved on the upper end of the tie shaft, the third A wall surface of the third bearing abuts on the tie shaft, the third B wall surface of the third bearing abuts on the lower base, the third A wall surface and the third B wall surface of the third bearing are rotatably connected, the two ends of the third A wall surface of the third bearing abut between the second stepped surface and the third shaft sleeve, the tie gear abuts between the third shaft sleeve and the fourth fastening nut, and the tie gear is drivingly connected between two working shafts respectively located in two groups of working shaft groups.

10. A multi-axis machining system of a group axis type, characterized by, The group shaft device for single-shaft-to-multi-shaft machining comprises a main shaft and the single-shaft-to-multi-shaft machining group shaft device according to any one of claims 1 to 9, the upper end of the tool holder shaft is rotatably connected to the main shaft, the lower end surface of the main shaft is provided with a positioning block, the lower end of the positioning block is provided with a positioning groove, and the upper end surface of the upper cover is provided with a limiting block, and the limiting block is clamped in the positioning groove.

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