A spindle head

Abstract

The utility model discloses a main shaft box, this main shaft box includes: seat body, main shaft box body and main shaft unit, seat body provides the installation foundation for main shaft box body, thereby main shaft box body can be connected to equipment main body through seat body, main shaft box body is movably installed in the bottom of seat body, thereby make main shaft box body can with a preset axis as pivot relative seat body carry out the rotation of preset direction, main shaft unit is installed in the bottom of main shaft box body, thereby make main shaft unit can with a preset axis as pivot relative main shaft box body carry out the rotation of preset direction, main shaft box body cross section is set up as trapezoidal, and with trapezoidal cross section along the length direction even extension forms the overall structure of main shaft box body, and main shaft box body is with narrow surface as top side surface, when main shaft box body movably connects to the bottom of seat body, and the top side surface of main shaft box body is towards seat body and is arranged. Main shaft box is through with the cross section of main shaft box body design trapezoidal and with narrow surface connect seat body, has compressed the volume of main shaft box body upper portion fundamentally.

Description

Technical Field

[0001] This utility model relates to the field of spindle box technology, and in particular to a spindle box. Background Technology

[0002] As a core component of CNC machine tools, machining centers, and other equipment, the spindle box functions to support the spindle and transmit power, enabling the spindle to drive the cutting tool or workpiece to rotate at a defined speed and torque, thereby completing machining tasks such as cutting, drilling, and milling. The performance of the spindle box directly affects the machining accuracy, efficiency, and adaptability of the equipment.

[0003] In existing technologies, to meet the machining needs of complex workpieces, such as machining inclined holes, inclined surfaces, or multi-angle features, the spindle box often needs to have an angle adjustment function. Traditional solutions mainly fall into two categories: one is to change the relative position of the workpiece and the tool by moving the entire worktable or turret of the equipment. This method has a limited adjustment range, and for large workpieces, moving the bulky worktable is energy-intensive, slow to respond, and difficult to guarantee accuracy. The second method uses accessories such as universal milling heads. While this method provides some flexibility, it usually requires manual installation and adjustment, has low automation, increases the overhang of the tool system, reduces overall rigidity, and affects machining accuracy.

[0004] To further enhance automation, some spindle box structures with rotational capabilities have emerged in existing technologies. These structures drive the entire spindle box to rotate relative to the base via a single rotary shaft. However, such structures typically offer only a single degree of freedom of rotation, with limited adjustment angles, making it difficult to meet extremely complex spatial machining requirements. Furthermore, and more critically, when the spindle box undergoes a large angular deflection, the upper part of the box near the mounting base is highly susceptible to mechanical interference with the base, equipment frame, or the workpiece itself, severely limiting its effective working range. To avoid interference, it is often necessary to sacrifice the size and rigidity of the spindle box, or limit its rotation angle, which in turn undermines its original design intent. Utility Model Content

[0005] Therefore, it is necessary to provide a spindle box that addresses the technical problem of existing spindle boxes easily causing mechanical interference with equipment or workpieces.

[0006] A spindle box includes a base, a spindle box body, and a spindle unit. The base provides a mounting foundation for the spindle box body, so that the spindle box body can be connected to the main body of the equipment via the base. The spindle housing is movably mounted on the bottom of the base, allowing the spindle housing to rotate relative to the base in a preset direction about a preset axis; the spindle unit is mounted on the bottom of the spindle housing, allowing the spindle unit to rotate relative to the spindle housing in a preset direction about a preset axis.

[0007] The spindle housing has a trapezoidal cross-section, and the trapezoidal cross-section extends evenly along the length to form the overall structure of the spindle housing. The top surface of the spindle housing is narrow. When the spindle housing is movably connected to the bottom of the base, the top surface of the spindle housing faces the base.

[0008] In one embodiment, the aforementioned seat body is provided with two hinged portions, which are respectively located at both ends of the seat body along the length direction of the seat body.

[0009] In one embodiment, the two ends of the aforementioned spindle housing are respectively rotatably connected to two hinged parts.

[0010] In one embodiment, the spindle housing is provided with two first connecting parts, which are respectively located at the two trapezoidal end faces of the spindle housing along the length direction of the spindle housing.

[0011] In one embodiment, the two first connecting parts are rotatably connected to the two hinged parts respectively.

[0012] In one embodiment, the spindle housing is further provided with a second connecting portion, which is located on the wide side of the bottom of the spindle housing.

[0013] In one embodiment, the aforementioned spindle unit is rotatably connected to the second connecting part.

[0014] In one embodiment, the spindle box described above includes a plurality of spindle units.

[0015] In one embodiment, the spindle housing is provided with a plurality of second connecting parts, and a plurality of spindle units are rotatably connected to the plurality of second connecting parts in a one-to-one correspondence.

[0016] In one embodiment, a tubular reinforcing portion is provided at the top of the seat body, and the reinforcing portion is disposed on the top side surface of the seat body along the length direction of the seat body.

[0017] In one embodiment, the second connection portion described above adopts a standardized flange interface.

[0018] In one embodiment, the aforementioned base body is further provided with a dust cover, which is disposed on the top side of the two hinged portions.

[0019] In one embodiment, a first driving device is mounted on the aforementioned seat, and the first driving device is sequentially connected to the hinge portion and the first connecting portion via a transmission mechanism.

[0020] In one embodiment, a second drive device is installed on the spindle housing, and the second drive device is sequentially connected to the second connecting part and the spindle unit through a transmission mechanism.

[0021] In one embodiment, the first driving device and the second driving device described above can be controlled to operate in conjunction or independently.

[0022] In one embodiment, a first angle sensor is provided at the hinge or first connection portion described above.

[0023] In one embodiment, a second angle sensor is provided at the rotational connection of the second connecting part or the spindle unit.

[0024] The aforementioned spindle box, by designing its cross-section as a trapezoid and connecting it to the base with a narrow face, fundamentally reduces the volume of the upper part of the spindle box, freeing up working space for the cutting tool, workpiece, and peripheral equipment. Specifically: Traditional rectangular or square spindle housings have a large connection surface with the base, and their upper corners are prone to collision (interference) with the base, equipment frame, or workpiece itself when the equipment or spindle is tilted. In contrast, the trapezoidal narrow face of the spindle housing in this design makes the connection point between the spindle housing and the base a "quasi-hinge point," minimizing the structural volume of this area. When the spindle housing drives the spindle unit to rotate significantly, its top area closest to the base has the smallest volume, greatly reducing the risk of mechanical collisions in this critical area. Reduced interference with its own structure means that the spindle and tool can move safely over a wider range, enabling the machining of larger workpieces or achieving more extreme machining angles. This fundamentally avoids motion collision accidents caused by design flaws, protecting equipment precision and mechanical structure, and enabling flexible application of the spindle housing. Furthermore, this design employs a three-tiered progressive installation structure: "base → spindle box → spindle unit," forming a stable and rational force path. The base, as the mounting foundation, transfers the load of the entire spindle box system to the robust main body of the equipment. The spindle box, as the intermediate carrier, bears the weight of the spindle unit and the machining reaction force, while also allowing for its own angle adjustment. The spindle unit, as the functional terminal, focuses on providing rotary cutting power. Each layer of the structure performs its specific function, ensuring overall rigidity and stability during dynamic machining, which is fundamental to guaranteeing machining accuracy. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the spindle box structure in one embodiment; Figure 2 This is a partial structural diagram of the spindle box in one embodiment. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] Please see Figures 1 to 2This utility model discloses a spindle box 1, which includes a base 10, a spindle box body 20, and a spindle unit 30. The base 10 provides a mounting foundation for the spindle box body 20, allowing the spindle box body 20 to be connected to the main body of the equipment. Specifically, the spindle box body 20 is movably mounted on the bottom of the base 10, enabling it to rotate relative to the base 10 in a preset direction about a preset axis. The spindle unit 30 is mounted on the bottom of the spindle box body 20, allowing it to rotate relative to the spindle box body 20 in a preset direction about a preset axis. Therefore, in practical applications, the spindle box 1 can be adjusted by changing the angles of the spindle box body 20 and the spindle unit 30 to adapt to actual production and processing needs, thus achieving specific production goals for the workpiece. More specifically, the spindle housing 20 has a trapezoidal cross-section, which extends uniformly along its length to form the overall structure of the spindle housing 20. The top surface of the spindle housing 20 is narrow. When the spindle housing 20 is movably connected to the bottom of the base 10, the top surface of the spindle housing 20 faces the base 10, thereby effectively reducing interference between the base 10 and the spindle housing 20, the spindle unit 30, and the workpiece. Based on the above configuration, the spindle housing 1 of this solution, by designing the cross-section of the spindle housing 20 as trapezoidal and connecting it to the base 10 with a narrow surface, fundamentally compresses the volume of the upper part of the spindle housing 20, freeing up working space for the tool, workpiece, and peripheral equipment. Specifically, traditional rectangular or square housings have a large connection surface with the base 10, and their upper corners are prone to collision (interference) with the base 10, equipment frame, or workpiece itself when the equipment or spindle is tilted. In contrast, the spindle housing 20 in this design features a trapezoidal narrow face facing upwards, making the connection point between the spindle housing 20 and the base 10 a "quasi-hinged point," minimizing the structural volume of this area. When the spindle housing 20 drives the spindle unit 30 to rotate significantly, its top area closest to the base 10 has the smallest volume, greatly reducing the risk of mechanical collisions in this critical area. Reduced interference within its own structure means that the spindle and tool can move safely over a wider range, enabling the machining of larger workpieces or achieving more extreme machining angles. This fundamentally avoids motion collision accidents caused by design flaws, protecting equipment accuracy and mechanical structure, and enabling flexible application of the spindle housing 20. Furthermore, this design employs a three-layer progressive installation structure of "base 10 → spindle housing 20 → spindle unit 30," forming a stable and reasonable force path. The base 10 serves as the mounting foundation, transferring the load of the entire spindle box 1 system to the robust main body of the equipment. The spindle box 20, as an intermediate carrier, not only bears the weight and machining reaction force of the spindle unit 30 but also allows for its own angle adjustment. The spindle unit 30, as the functional terminal, focuses on providing rotary cutting power. Each layer of the structure performs its specific function, ensuring overall rigidity and stability during dynamic machining, which is fundamental to guaranteeing machining accuracy.

[0033] Furthermore, the base 10 is provided with two hinge parts 11, which are respectively located at both ends of the base 10 along the length direction of the base 10; the two ends of the spindle housing 20 are respectively rotatably connected to the two hinge parts 11, thereby realizing the adjustment of the setting angle between the spindle housing 20 and the base 10.

[0034] Specifically, in one embodiment, the spindle housing 20 is provided with two first connecting parts 21, which are respectively located at the two trapezoidal end faces of the spindle housing 20 along the length direction of the spindle housing 20; the two first connecting parts 21 are respectively rotatably connected to the two hinge parts 11 in a one-to-one correspondence.

[0035] Furthermore, the spindle housing 20 is also provided with a second connecting part 22, which is located on the wide surface of the bottom side of the spindle housing 20; the spindle unit 30 is rotatably connected to the second connecting part 22, thereby realizing the adjustment of the setting angle between the spindle unit 30 and the spindle housing 20.

[0036] Specifically, in one embodiment, the spindle box 1 includes a plurality of spindle units 30; correspondingly, the spindle box body 20 is provided with a plurality of second connecting parts 22, and the plurality of spindle units 30 are rotatably connected to the plurality of second connecting parts 22 in a one-to-one correspondence.

[0037] Furthermore, in one embodiment, a first drive device 12 is installed on the base 10. The first drive device 12 is sequentially connected to the hinge portion 11 and the first connecting portion 21 through a transmission mechanism to provide power to drive the spindle housing 20 to perform precise rotation and angular positioning relative to the base 10.

[0038] Furthermore, in one embodiment, a second drive device (not shown) is installed on the spindle housing 20. The second drive device is sequentially connected to the second connecting part 22 and the spindle unit 30 through a transmission mechanism to provide power to drive the spindle unit 30 to rotate relative to the spindle housing 20. The first drive device 12 and the second drive device can be linked or act independently in a controlled manner to complete complex machining with a composite motion trajectory.

[0039] Furthermore, in one embodiment, a first angle sensor (not shown) is provided at the hinge portion 11 or the first connecting portion 21 to detect the rotation angle of the spindle housing 20 relative to the base 10 in real time; a second angle sensor (not shown) is provided at the second connecting portion 22 or the rotational connection of the spindle unit 30 to detect the rotation angle of the spindle unit 30 relative to the spindle housing 20 in real time; an externally adapted control system receives the sensor signals and forms a closed-loop control to ensure angular positioning accuracy.

[0040] Furthermore, a tubular reinforcing part 13 is provided at the top of the seat body 10. The reinforcing part 13 is provided on the top side surface of the seat body 10 along the length direction of the seat body 10, which ensures the torsional stiffness and bending stiffness of the seat body 10 while minimizing weight.

[0041] Furthermore, in one embodiment, the second connection part 22 adopts a standardized flange interface, which enables spindle units 30 of different specifications and functions to be quickly and accurately installed on the spindle housing 20, realizing the modularity and functional diversification of the equipment.

[0042] Furthermore, the base 10 is also provided with a dust cover 14, which is located on the top side of the two hinge parts 11. This effectively isolates cutting fluid and dust from entering the precision hinge parts 11 and the internal bearing structure, ensuring their long-term operating accuracy and lifespan.

[0043] In summary, the spindle box disclosed in this invention, by designing its cross-section as a trapezoid and connecting it to the base with a narrow face, fundamentally compresses the volume of the upper part of the spindle box, freeing up working space for the tool, workpiece, and peripheral equipment. Specifically, traditional rectangular or square boxes have a large connection surface with the base, and their upper corners are prone to collision (interference) with the base, equipment frame, or workpiece itself when the equipment or spindle is tilted. The trapezoidal narrow face design of the spindle box in this solution makes the connection point between the spindle box and the base a "quasi-hinged point," minimizing the structural volume of this area. When the spindle box drives the spindle unit to rotate significantly, its top area closest to the base has the smallest volume, greatly reducing the risk of mechanical collision in this critical area. Reduced interference with its own structure means that the spindle and tool can move safely over a wider range, enabling the machining of larger workpieces or achieving more extreme machining angles. It fundamentally avoids motion collision accidents caused by design flaws, protects equipment accuracy and mechanical structure, and enables flexible application of the spindle box. Furthermore, this design employs a three-tiered progressive installation structure: "base → spindle box → spindle unit," forming a stable and rational force path. The base, as the mounting foundation, transfers the load of the entire spindle box system to the robust main body of the equipment. The spindle box, as the intermediate carrier, bears the weight of the spindle unit and the machining reaction force, while also allowing for its own angle adjustment. The spindle unit, as the functional terminal, focuses on providing rotary cutting power. Each layer of the structure performs its specific function, ensuring overall rigidity and stability during dynamic machining, which is fundamental to guaranteeing machining accuracy.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A spindle box, characterized in that, include: The equipment includes a base, a spindle housing, and a spindle unit. The base provides a mounting foundation for the spindle housing, allowing the spindle housing to be connected to the main body of the equipment. The spindle housing is movably mounted on the bottom of the base, thereby enabling the spindle housing to rotate relative to the base in a preset direction about a preset axis. The spindle unit is installed at the bottom of the spindle housing, which enables the spindle unit to rotate in a preset direction relative to the spindle housing about a preset axis. The spindle housing has a trapezoidal cross-section, and the trapezoidal cross-section extends evenly along the length to form the overall structure of the spindle housing. The top surface of the spindle housing is narrow. When the spindle housing is movably connected to the bottom of the base, the top surface of the spindle housing faces the base.

2. The spindle box according to claim 1, characterized in that, The seat body is provided with two hinge parts, which are respectively located at both ends of the seat body along the length direction of the seat body.

3. The spindle box according to claim 2, characterized in that, The two ends of the spindle housing are rotatably connected to the two hinged parts respectively.

4. The spindle box according to claim 3, characterized in that, The spindle housing is provided with two first connecting parts, which are respectively located at the two trapezoidal end faces of the spindle housing along the length of the spindle housing.

5. The spindle box according to claim 4, characterized in that, The two first connecting parts are rotatably connected to the two hinged parts one by one.

6. The spindle box according to claim 5, characterized in that, The spindle housing is also provided with a second connecting part, which is located on the wide side of the bottom of the spindle housing.

7. The spindle box according to claim 6, characterized in that, The main spindle unit is rotatably connected to the second connecting part.

8. The spindle box according to claim 7, characterized in that, The spindle box consists of several spindle units.

9. The spindle box according to claim 8, characterized in that, The spindle housing is provided with several second connecting parts, and several spindle units are rotatably connected to several second connecting parts in a one-to-one correspondence.

10. The spindle box according to claim 9, characterized in that, A tubular reinforcing part is provided at the top of the seat body, and the reinforcing part is provided on the top side surface of the seat body along the length direction of the seat body.

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