Spindle box structure and machining apparatus having the same

Abstract

The utility model provides a kind of main shaft box structure and the machining equipment with it, main shaft box structure includes: box, box is provided with containing cavity inside;Main shaft assembly, main shaft assembly includes main shaft installation cavity, main shaft installation cavity is provided with main shaft inside, at least part of main shaft assembly is arranged in containing cavity, and with box is detachably connected;Among them, main shaft assembly is multiple, and multiple main shaft assembly is optionally connected with box.This application solves the problem that the main shaft box in the prior art can only adapt to a single main shaft, resulting in reduced machining efficiency of the machine tool.

Description

Technical Field

[0001] This utility model relates to the field of spindle box technology, and more specifically, to a spindle box structure and processing equipment having the same. Background Technology

[0002] Currently, in the field of machining, the spindle box, as one of the key components of machine tools, plays an important role in supporting the spindle and transmitting power.

[0003] Current machine tool product lines often need to cover a variety of application scenarios, from precision machining to heavy cutting. Most existing traditional spindle box designs use a fixed inner diameter to match specific spindle specifications. When the spindle needs to be replaced, the entire spindle box needs to be replaced, which not only increases production costs but also reduces the machining efficiency of the machine tool. Utility Model Content

[0004] The main objective of this invention is to provide a spindle box structure and a processing device having the same, so as to solve the problem that the spindle box in the prior art can only be adapted to a single spindle, resulting in a reduction in the processing efficiency of the machine tool.

[0005] To achieve the above objectives, according to one aspect of the present invention, a spindle box structure is provided, comprising: a housing with a receiving cavity inside; a spindle assembly, the spindle assembly including a spindle mounting cavity, a spindle being disposed within the spindle mounting cavity, at least a portion of the spindle assembly passing through the receiving cavity and being detachably connected to the housing; wherein, there are multiple sets of spindle assemblies, and multiple sets of spindle assemblies can be selectively connected to the housing.

[0006] Furthermore, the spindle assembly includes: a bushing body, a spindle mounting cavity located within the bushing body, the spindle being connected to the bushing body, and at least a portion of the bushing body passing through the receiving cavity and connected to the housing.

[0007] Furthermore, the spindle box structure also includes: a first positioning part disposed on the inner wall surface of the receiving cavity; and a second positioning part disposed on the surface of the bushing body, wherein at least a portion of the first positioning part and the second positioning part are interlocked to limit the bushing body.

[0008] Furthermore, the first positioning part extends along the axial direction of the housing, and there are multiple first positioning parts, which are spaced apart along the circumferential direction of the housing; the second positioning part extends along the axial direction of the bushing body, and there are multiple second positioning parts, which are arranged one-to-one with the multiple first positioning parts.

[0009] Furthermore, the first positioning part includes a positioning groove that extends along the axial direction of the housing; the second positioning part includes a positioning protrusion that extends along the axial direction of the bushing body and is inserted into the positioning groove.

[0010] Furthermore, the positioning groove includes a first groove wall and a second groove wall, which are arranged at an angle to each other.

[0011] Furthermore, the spindle assembly also includes: a mounting body disposed on the outer wall surface of the bushing body, the mounting body extending along the circumferential direction of the bushing body, and the mounting body being connected to the housing.

[0012] Furthermore, the housing is provided with an installation end face, which is positioned opposite to the installation body; a limiting groove is provided on the installation end face, and a limiting protrusion is provided on the installation body, with at least a portion of the limiting protrusion embedded in the limiting groove.

[0013] Furthermore, the housing is provided with an installation end face, on which a first positioning hole and a first connecting hole are provided; the mounting body is provided with a second positioning hole and a second connecting hole, through which a positioning member passes through the second positioning hole and then through the first positioning hole to position the bushing body, and through which a connecting member passes through the second connecting hole and then through the first connecting hole to connect the bushing body to the housing via the mounting body.

[0014] According to another aspect of the present invention, a processing device is provided, including a machine body and a spindle box structure, wherein the spindle box structure is disposed on the machine body and the spindle box structure is the spindle box structure described above.

[0015] The spindle box structure provided in this application, based on the technical solution of this utility model, includes a housing and a spindle assembly. The housing has a receiving cavity, and the spindle assembly includes a spindle mounting cavity. A spindle is disposed in the spindle mounting cavity, and at least a portion of the spindle assembly passes through the receiving cavity and is detachably connected to the housing. The spindle assembly consists of multiple sets, and the multiple sets of spindle assemblies can be selectively connected to the housing.

[0016] The internal housing is designed with standardized dimensions, while the spindle assembly can be equipped with different specifications of spindles according to actual machining needs. This means that the same machine tool can quickly adapt to different machining tasks and workpiece types by changing the spindle assembly, without requiring major modifications to the main structure of the machine tool.

[0017] Traditional machine tools often require replacing the entire spindle box when changing the spindle, which not only increases equipment costs but may also cause unnecessary machine downtime. The structure proposed in this application, however, only requires replacing the spindle assembly, retaining the housing and other key components, significantly reducing costs.

[0018] Different specifications of spindle assemblies can be precisely matched to specific machining requirements, such as adjusting spindle speed, torque or feed rate, which helps to optimize machining parameters and ensure machining quality and accuracy. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of an embodiment of the spindle box structure according to the present invention is shown;

[0021] Figure 2 A schematic diagram of the bushing body in the spindle box structure according to the present invention is shown;

[0022] Figure 3 A cross-sectional view of the bushing body in the spindle box structure according to the present invention is shown;

[0023] Figure 4 A front view of the bushing body and the housing in the spindle box structure according to the present invention is shown;

[0024] Figure 5 A schematic diagram of the first positioning part in the spindle box structure according to the present invention is shown;

[0025] Figure 6 A schematic diagram of the second positioning part in the spindle box structure according to the present invention is shown.

[0026] The above figures include the following reference numerals:

[0027] 100. Housing; 101. Receiving cavity; 110. Mounting end face; 111. First positioning hole; 112. First connecting hole;

[0028] 200. Spindle assembly; 201. Spindle mounting cavity; 210. Bushing body; 220. Mounting body; 221. Second positioning hole; 222. Second connecting hole;

[0029] 300, First positioning part; 310, Positioning groove; 311, First groove wall; 312, Second groove wall;

[0030] 400. Second positioning part; 410. Positioning protrusion;

[0031] 500, positioning component; 600, connecting component. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] As mentioned in the background section, most existing traditional spindle box designs use a fixed inner diameter to match specific spindle specifications. When the spindle needs to be replaced, the entire spindle box needs to be replaced, which not only increases production costs but also reduces the machining efficiency of the machine tool. Therefore, to address the above-mentioned technical problems, this application provides a spindle box structure, including a housing 100 and a spindle assembly 200. The housing 100 has a receiving cavity 101, and the spindle assembly 200 includes a spindle mounting cavity 201, in which a spindle is disposed. At least a portion of the spindle assembly 200 passes through the receiving cavity 101 and is detachably connected to the housing 100. Multiple spindle assemblies 200 are provided, and multiple sets of spindle assemblies 200 can be selectively connected to the housing 100. Once the design of a traditional spindle box is completed, its inner diameter remains fixed. This means that every time the spindle is replaced, the entire spindle box needs to be replaced, which undoubtedly limits the machine tool's adaptability to different machining tasks and workpiece sizes. This application, through the design of a detachable spindle assembly 200, allows users to quickly change spindles of different specifications according to processing needs without altering the housing 100, greatly improving the flexibility of the machine tool. Since it is no longer necessary to replace the entire spindle housing every time the spindle is changed, significant equipment costs are saved. The housing 100, as a support and protective structure, generally does not require frequent replacement unless extreme conditions are encountered, which helps reduce the overall maintenance costs of the machine tool.

[0034] Please refer to Figures 1 to 6 This application provides a spindle box structure, including: a housing 100, with a receiving cavity 101 disposed therein; a spindle assembly 200, the spindle assembly 200 including a spindle mounting cavity 201, a spindle being disposed therein, at least a portion of the spindle assembly 200 passing through the receiving cavity 101 and being detachably connected to the housing 100; wherein, there are multiple sets of spindle assemblies 200, and multiple sets of spindle assemblies 200 can be selectively connected to the housing 100.

[0035] According to the spindle box structure provided in this application, there are a housing 100 and a spindle assembly 200. The housing 100 is provided with a receiving cavity 101. The spindle assembly 200 includes a spindle mounting cavity 201, in which a spindle is disposed. At least a portion of the spindle assembly 200 passes through the receiving cavity 101 and is detachably connected to the housing 100. There are multiple sets of spindle assemblies 200, and multiple sets of spindle assemblies 200 can be selectively connected to the housing 100.

[0036] The housing 100 has a standardized cavity 101, while the spindle assembly 200 can be equipped with spindles of different specifications according to actual processing needs. This means that the same machine tool can quickly adapt to different processing tasks and workpiece types by changing the spindle assembly 200, without making major modifications to the main structure of the machine tool.

[0037] Traditionally, replacing the spindle in a machine tool often requires replacing the entire spindle housing, which not only increases equipment costs but may also cause unnecessary machine downtime. The structure proposed in this application, however, only requires replacing the spindle assembly 200, retaining the housing 100 and other key components, significantly reducing costs.

[0038] Different specifications of spindle assemblies 200 can be precisely matched to specific machining requirements, such as adjusting spindle speed, torque or feed rate, which helps to optimize machining parameters and ensure machining quality and accuracy.

[0039] Specifically, such as Figures 1 to 4 As shown, the spindle assembly 200 includes: a bushing body 210, a spindle mounting cavity 201 located inside the bushing body 210, a spindle connected to the bushing body 210, and at least a portion of the bushing body 210 passing through the receiving cavity 101 and connected to the housing 100.

[0040] The detachable connection between the bushing body 210 and the housing 100 makes replacing the spindle assembly 200 simple and quick. Maintenance personnel can complete the spindle replacement simply by disassembling and reinstalling the bushing body according to a standardized procedure, without the need for complex disassembly and reconstruction work, effectively reducing maintenance time and costs.

[0041] The connection design between the bushing body 210 and the housing 100 ensures that the spindle maintains high concentricity and positional stability even after replacement. This precise positioning and support helps improve machining accuracy and reduce workpiece machining defects caused by spindle vibration or deviation.

[0042] The introduction of the bushing body 210 makes the spindle assembly 200 an independent module. Spindles of different specifications can be installed in the bushing body 210 as needed without changing any structure of the housing 100, only requiring the corresponding bushing body 210 to connect to different specifications of spindles. This design allows users to flexibly replace the spindle assembly according to the requirements of the machining task, greatly improving the versatility and flexibility of the machine tool.

[0043] In specific implementation, such as Figures 4 to 6 As shown, the spindle box structure also includes: a first positioning part 300, which is disposed on the inner wall surface of the receiving cavity 101; and a second positioning part 400, which is disposed on the surface of the bushing body 210. At least a portion of the first positioning part 300 and the second positioning part 400 are interlocked to limit the bushing body 210.

[0044] The insertion design of the first positioning part 300 and the second positioning part 400 enables precise positioning of the bushing body 210 within the housing 100. This positioning method ensures the stability of the spindle during high-speed rotation and avoids a decrease in machining accuracy due to positional deviation or vibration.

[0045] This positioning design simplifies the assembly process of the spindle assembly 200. Maintenance or operation personnel only need to align and insert the second positioning part 400 of the bushing body 210 with the first positioning part 300 inside the housing 100 to quickly achieve positioning and installation, significantly saving assembly time.

[0046] Through precise positioning design, the bushing bodies 210 of different sizes can be accurately positioned in the receiving cavity 101 of the housing 100 without any modification to the housing 100, which can easily adapt to spindles of various specifications, increasing the compatibility and adaptability of the spindle box structure.

[0047] Furthermore, in the specific implementation process, the first positioning part 300 extends along the axial direction of the housing 100, and there are multiple first positioning parts 300, which are spaced apart along the circumferential direction of the housing 100; the second positioning part 400 extends along the axial direction of the bushing body 210, and there are multiple second positioning parts 400, which are arranged one-to-one with the multiple first positioning parts 300.

[0048] The arrangement of the first positioning part 300 and the second positioning part 400 not only guides the alignment of the bushing body 210 with the housing 100 in the axial direction, but also ensures the precise radial positioning of the spindle assembly through their circumferential spacing. This multi-point positioning method effectively reduces the offset of the spindle assembly during installation and ensures the concentricity and stability of the spindle during operation.

[0049] The first positioning unit 300 and the second positioning unit 400 are set in a one-to-one correspondence, which simplifies the adjustment steps when replacing the spindle assembly. Maintenance personnel only need to ensure that the positioning units are correctly aligned to achieve quick and accurate replacement of the spindle assembly, without the need for additional calibration work, which greatly saves replacement time.

[0050] The even distribution of multiple positioning parts makes the force distribution of the spindle assembly more uniform when it is subjected to machining load, reducing local stress concentration and improving the strength and reliability of the overall structure.

[0051] In the embodiments provided in this application, the first positioning part 300 includes a positioning groove 310, which extends along the axial direction of the housing 100; the second positioning part 400 includes a positioning protrusion 410, which extends along the axial direction of the bushing body 210, and the positioning protrusion 410 is inserted into the positioning groove 310.

[0052] The precise fit between the positioning groove 310 and the positioning protrusion 410 ensures the axial positioning of the bushing body 210 relative to the housing 100, thereby accurately maintaining the spindle's axial position during spindle replacement or adjustment. This positioning mechanism effectively eliminates spindle misalignment caused by assembly errors, enhancing the machining accuracy and stability of the machine tool.

[0053] Since both the positioning groove 310 and the positioning protrusion 410 extend along their respective axial directions, this design can provide continuous and stable support, ensuring that the relative position between the spindle assembly 200 and the housing 100 does not change even under high-load machining conditions such as high-speed cutting, thereby ensuring the consistency and reliability of machining.

[0054] The insertion and engagement of the positioning protrusion 410 and the positioning groove 310 simplifies the assembly process between the spindle assembly 200 and the housing 100. Maintenance personnel or operators can complete the assembly of the components through simple alignment and insertion without the need for complex calibration tools, which not only improves work efficiency but also reduces the risk of incorrect assembly.

[0055] With the cooperation of the positioning groove 310 and the positioning protrusion 410, the bushing body 210 is more stably positioned in the housing 100, reducing component displacement and wear caused by vibration and impact.

[0056] The combined use of the first positioning part 300 and the second positioning part 400 enables the spindle assembly 200 to be designed and manufactured as a standardized and modular component. Different specifications of bushing bodies 210 only need to ensure that the dimensions of the positioning protrusion 410 and the positioning groove 310 are consistent to achieve universality and interchangeability with the same housing 100, which provides users with great flexibility.

[0057] The positioning groove 310 includes a first groove wall 311 and a second groove wall 312, with the first groove wall 311 and the second groove wall 312 arranged at an angle.

[0058] The included angle design between the first groove wall 311 and the second groove wall 312 provides a more robust and precise positioning effect. When the bushing body 210 is inserted into the receiving cavity 101 of the housing 100, the positioning groove 310 cooperates with the positioning protrusion or corresponding structure inside the housing 100. Through the action of the included angle, dual radial and axial positioning is achieved, ensuring that the spindle assembly 200 maintains high-precision positioning under any machining conditions.

[0059] The angled first groove wall 311 and second groove wall 312 provide additional support, preventing vibration or displacement of the bushing body 210 during high-speed rotation or under cutting forces, thereby enhancing the stability of the entire spindle box structure. This design ensures smooth spindle operation, reduces machining errors caused by displacement or vibration, and improves machining quality and efficiency.

[0060] The spindle assembly 200 also includes a mounting body 220, which is disposed on the outer wall of the bushing body 210. The mounting body 220 extends along the circumferential direction of the bushing body 210 and is connected to the housing 100.

[0061] In the embodiments provided in this application, the mounting body 220 and the bushing body 210 are integrally formed structures.

[0062] The design of the mounting body 220 increases the contact area between the bushing body 210 and the housing 100, thereby improving the structural stability and load-bearing capacity of the spindle assembly 200.

[0063] By directly connecting the mounting body 220 to the housing 100, the position of the spindle assembly 200 within the housing 100 can be adjusted more easily, ensuring precise alignment between the spindle and other machine tool components.

[0064] In another embodiment provided in this application, the housing 100 is provided with an installation end face 110, which is disposed opposite to the installation body 220; the installation end face 110 is provided with a limiting groove, and the installation body 220 is provided with a limiting protrusion, at least a portion of which is embedded in the limiting groove.

[0065] The cooperation between the limiting groove and the limiting protrusion enables precise radial positioning of the spindle assembly 200. When the spindle assembly 200 is installed on the housing 100, the limiting protrusion is embedded in the limiting groove, forming a mechanical keyway locking effect, which effectively prevents radial wobble of the spindle assembly 200 during operation and improves the stability of spindle rotation and machining accuracy.

[0066] The design of the limiting groove and limiting protrusion significantly simplifies the assembly process of the spindle assembly 200. During installation, the operator only needs to align the limiting protrusion on the mounting body 220 with the limiting groove on the mounting end face 110 of the housing 100 and gently push it in to complete the initial positioning, which greatly improves the assembly efficiency.

[0067] Specifically, such as Figure 1As shown, the housing 100 is provided with an installation end face 110, which is provided with a first positioning hole 111 and a first connecting hole 112; the mounting body 220 is provided with a second positioning hole 221 and a second connecting hole 222. The positioning member 500 passes through the second positioning hole 221 and then passes through the first positioning hole 111 to position the bushing body 210. The connecting member 600 passes through the second connecting hole 222 and then passes through the first connecting hole 112 to connect the bushing body 210 to the housing 100 through the mounting body 220.

[0068] After passing through the second positioning hole 221, the positioning component 500 is precisely inserted into the first positioning hole 111, achieving initial positioning between the bushing body 210 and the housing 100. This positioning method ensures precise alignment of the spindle assembly during installation, effectively avoiding axial and radial offsets during machining, and improving machining accuracy and overall structural stability.

[0069] After passing through the second connecting hole 222, the connector 600 is fixed to the first connecting hole 112, which can further strengthen the connection between the spindle assembly and the housing, ensuring that the spindle assembly can be firmly fixed to the housing when operating at high speed or under varying loads, thus improving the safety and reliability of machining.

[0070] Among them, positioning component 500 is a pin, and connecting component 600 is a screw.

[0071] In practical implementation, the housing 100 provides support and protection for the entire structure, while the bushing body 210 is designed with an outer wall having a serrated mating surface (i.e., positioning protrusion 410). In actual use, the bushing body 210 is installed in conjunction with the housing 100. The main mating surfaces are the serrated mating surface, the inner circular surface, and the end face. The accuracy requirement for these surfaces is within 0.001, forming an interference fit. Then, a pin is installed on the end face of the mounting body 220. The pin is mainly used for positioning. Since the serrated surface is triangular, it has extremely strong stability after mating. The pin and the serrated surface can prevent the variable diameter sleeve from moving in the circumferential direction. Finally, screws are used to lock the mounting body 220 and the housing 100 to prevent them from moving in the axial direction.

[0072] The bushing body 210 can be manufactured according to different specifications of spindles. Its inner diameter can vary with the diameter of the spindle and is generally suitable for spindles with diameters of 50-240mm.

[0073] This application also provides a processing device, including a machine body and a spindle box structure, wherein the spindle box structure is disposed on the machine body, and the spindle box structure is the spindle box structure of the above embodiment.

[0074] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0075] According to the spindle box structure provided in this application, there are a housing 100 and a spindle assembly 200. The housing 100 is provided with a receiving cavity 101. The spindle assembly 200 includes a spindle mounting cavity 201, in which a spindle is disposed. At least a portion of the spindle assembly 200 passes through the receiving cavity 101 and is detachably connected to the housing 100. There are multiple sets of spindle assemblies 200, and multiple sets of spindle assemblies 200 can be selectively connected to the housing 100.

[0076] The housing 100 has a standardized cavity 101, while the spindle assembly 200 can be equipped with spindles of different specifications according to actual processing needs. This means that the same machine tool can quickly adapt to different processing tasks and workpiece types by changing the spindle assembly 200, without making major modifications to the main structure of the machine tool.

[0077] Traditionally, replacing the spindle in a machine tool often requires replacing the entire spindle housing, which not only increases equipment costs but may also cause unnecessary machine downtime. The structure proposed in this application, however, only requires replacing the spindle assembly 200, retaining the housing 100 and other key components, significantly reducing costs.

[0078] Different specifications of spindle assemblies 200 can be precisely matched to specific machining requirements, such as adjusting spindle speed, torque or feed rate, which helps to optimize machining parameters and ensure machining quality and accuracy.

[0079] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0080] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0081] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0082] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0083] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A spindle box structure, characterized in that, include: The housing (100) has a receiving cavity (101) inside. A spindle assembly (200) includes a spindle mounting cavity (201) in which a spindle is disposed, and at least a portion of the spindle assembly (200) passes through the receiving cavity (101) and is detachably connected to the housing (100). The spindle assembly (200) is in multiple sets, and the multiple sets of spindle assemblies (200) can be selectively connected to the housing (100).

2. The spindle box structure according to claim 1, characterized in that, The spindle assembly (200) includes: The bushing body (210) has the main shaft mounting cavity (201) located inside the bushing body (210), the main shaft is connected to the bushing body (210), and at least a portion of the bushing body (210) passes through the receiving cavity (101) and is connected to the housing (100).

3. The spindle box structure according to claim 2, characterized in that, The spindle box structure also includes: A first positioning part (300) is disposed on the inner wall surface of the receiving cavity (101); A second positioning part (400) is disposed on the surface of the bushing body (210), and at least a portion of the first positioning part (300) is inserted into the second positioning part (400) to limit the bushing body (210).

4. The spindle box structure according to claim 3, characterized in that, The first positioning part (300) extends along the axial direction of the box (100), and there are multiple first positioning parts (300), which are spaced apart along the circumferential direction of the box (100). The second positioning part (400) extends along the axial direction of the bushing body (210). There are multiple second positioning parts (400), and each of the multiple second positioning parts (400) is provided in a one-to-one correspondence with a multiple of the first positioning parts (300).

5. The spindle box structure according to claim 3, characterized in that, The first positioning part (300) includes a positioning groove (310) that extends along the axial direction of the housing (100); The second positioning part (400) includes a positioning protrusion (410) that extends along the axial direction of the bushing body (210) and is inserted into the positioning groove (310).

6. The spindle box structure according to claim 5, characterized in that, The positioning groove (310) includes a first groove wall surface (311) and a second groove wall surface (312), and the first groove wall surface (311) and the second groove wall surface (312) are set at an angle.

7. The spindle box structure according to claim 2, characterized in that, The spindle assembly (200) also includes: The mounting body (220) is disposed on the outer wall surface of the bushing body (210). The mounting body (220) extends along the circumferential direction of the bushing body (210) and is connected to the housing (100).

8. The spindle box structure according to claim 7, characterized in that, The housing (100) is provided with a mounting end face (110), which is disposed opposite to the mounting body (220); A limiting groove is provided on the mounting end face (110), and a limiting protrusion is provided on the mounting body (220). At least a portion of the limiting protrusion is embedded in the limiting groove.

9. The spindle box structure according to claim 7, characterized in that, The housing (100) is provided with an installation end face (110), and the installation end face (110) is provided with a first positioning hole (111) and a first connecting hole (112). The mounting body (220) is provided with a second positioning hole (221) and a second connecting hole (222). The positioning member passes through the second positioning hole (221) and then passes into the first positioning hole (111) to position the bushing body (210). The connecting member passes through the second connecting hole (222) and then passes into the first connecting hole (112) to connect the bushing body (210) to the housing (100) through the mounting body (220).

10. A processing device, comprising a machine body and a spindle box structure, wherein the spindle box structure is disposed on the machine body, characterized in that, The spindle box structure is the spindle box structure according to any one of claims 1 to 9.

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