Spindle box
By setting annular and strip reinforcement ribs at the connection parts of the spindle box, the problems of large weight, slow heat dissipation and thermal deformation of the spindle box are solved, and lightweight and high-precision machine equipment design is achieved.
Patent Information
- Application Number
- CN202422423796.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-10-08
AI Technical Summary
The traditional spindle box has a large weight, slow heat dissipation, large thermal deformation, and poor earthquake resistance, which affects the accuracy and cost of machine tools.
Annular reinforcement ribs and strip reinforcement ribs are provided at the connection parts of the spindle box to enhance the stiffness and deformation resistance of the connection parts, and improve the torsion resistance and heat dissipation effect of the overall structure through grid-like reinforcement ribs and triangular reinforcement plates.
It reduces the weight of the spindle box, improves the resistance to deformation and earthquake resistance, enhances the heat dissipation ability, reduces manufacturing costs, and improves the processing accuracy of the machine tool.
Smart Images
Figure CN223185560U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of machine tool equipment, in particular to a spindle box. Background Art
[0002] The spindle box is an important component of various machine tools. It carries the spindle and transmits power to drive the spindle's rotation. Traditional spindle box designs usually adopt a box-type structure. Although it can meet basic mechanical performance requirements, it has problems such as heavy weight, slow heat dissipation, large thermal deformation, and poor seismic performance. The above-mentioned traditional spindle box not only makes the overall weight of the machine tool equipment heavier and increases the cost, but also the heat generated by the high-speed rotation of the spindle is not easy to dissipate, resulting in large thermal deformation of the spindle box, which in turn affects the accuracy of the machine tool equipment. Utility Model Content
[0003] The main technical problem solved by the utility model is that the main spindle box is heavy and the heat dissipation is slow.
[0004] According to a first aspect, an embodiment provides a spindle box, comprising a spindle mounting portion and a machine tool mounting portion spaced apart on opposite sides of the spindle box, the machine tool mounting portion being used to connect to a machine tool, the spindle mounting portion being provided with a spindle hole for mounting a spindle;
[0005] The spindle box also includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are connected between the spindle mounting part and the machine tool mounting part, and the first connecting part is arranged opposite to the second connecting part; at least one reinforcement unit is provided on the inner side of the first connecting part and the inner side of the second connecting part, and the reinforcement unit includes an annular reinforcement rib and a plurality of strip reinforcement ribs, the annular reinforcement rib is located in the middle position of the first connecting part or the second connecting part, and the plurality of strip reinforcement ribs are arranged at intervals along the outer periphery of the annular reinforcement rib and are fixedly connected to the annular reinforcement rib.
[0006] In some embodiments, a first reinforcing rib is provided on the inner side of the first connecting portion and the inner side of the second connecting portion, the first reinforcing rib is parallel to the axial direction of the main shaft hole, two reinforcing units are provided, and the two reinforcing units are respectively located on both sides of the first reinforcing rib.
[0007] In some embodiments, the spindle box includes a third connecting part and a fourth connecting part, the third connecting part and the fourth connecting part are located between the first connecting part and the second connecting part, a grid-shaped reinforcement rib is provided on the inner side of the third connecting part, and an installation structure is provided on the fourth connecting part.
[0008] In some embodiments, the strip-shaped reinforcement ribs and the first reinforcement ribs extend to the third connecting portion and are connected to the grid-shaped reinforcement ribs.
[0009] In some embodiments, the fourth connecting portion is provided with an avoidance opening for the power supply shaft to pass through the spindle box, and the spindle mounting portion also includes a pulley mounting cavity, which is arranged on the side of the spindle hole close to the fourth connecting portion along the axial direction of the spindle hole, and the spindle mounting portion is provided with a pulley mounting hole connected to the pulley mounting cavity.
[0010] In some embodiments, a second reinforcing rib and a plurality of third reinforcing ribs are provided on the periphery of the main shaft mounting portion, the second reinforcing ribs and the third reinforcing ribs are arranged corresponding to the main shaft hole, the second reinforcing ribs are arranged along the axial direction of the main shaft mounting portion, and the plurality of third reinforcing ribs are perpendicular to the second reinforcing ribs and arranged at intervals.
[0011] In some embodiments, the first connecting portion and the second connecting portion form a first side surface and a second side surface, respectively, and chamfers are provided between the top surface of the spindle mounting portion and the first side surface and the second side surface.
[0012] In some embodiments, one second reinforcing rib is provided and is located on the top surface of the spindle mounting portion. The spindle mounting portion has a cooling oil hole, and the cooling oil hole is provided on the second reinforcing rib. The cooling oil hole is used to transport cooling oil to cool the spindle.
[0013] In some embodiments, the machine tool mounting part is a plate-like structure and a flange is formed at the corresponding position of the spindle box. A triangular reinforcement plate is provided at the position where the first connecting part, the second connecting part and the machine tool mounting part are connected. There are multiple triangular reinforcement plates, and the multiple triangular reinforcement plates are arranged at intervals.
[0014] In some embodiments, hoisting holes are provided on the first connecting portion and the second connecting portion at positions where the reinforcing units are provided, and the hoisting holes are used for hoisting the spindle box.
[0015] In the spindle housing of the above embodiment, at least one reinforcement unit is provided on the inner sides of the first and second connecting portions. The reinforcement unit comprises an annular reinforcement rib and a plurality of strip reinforcement ribs. The annular reinforcement rib and the strip reinforcement ribs enhance the rigidity of the first and second connecting portions, making them less susceptible to deformation. Furthermore, the provision of the annular reinforcement rib and the strip reinforcement ribs reduces the weight of the spindle housing and lowers the cost of raw materials for the spindle housing. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A three-dimensional view of an embodiment of the spindle box of the present invention;
[0017] Figure 2 for Figure 1 A three-dimensional view of the center spindle box from another angle.
[0018] Figure 3 for Figure 1 Front view of the center spindle box;
[0019] Figure 4 for Figure 3 Cross-sectional view of section C;
[0020] Figure 5 for Figure 1 Rear view of the center spindle box.
[0021] Reference numerals:
[0022] 1. Spindle mounting part; 11. Spindle hole; 12. Second reinforcing rib; 13. Third reinforcing rib; 14. Chamfer; 15. Cooling oil hole; 16. Pulley mounting cavity; 17. Pulley mounting hole; 2. Machine tool mounting part; 3. First connecting part; 4. Second connecting part; 41. Lifting hole; 5. Reinforcement unit; 51. Annular reinforcing rib; 52. Strip reinforcing rib; 53. First reinforcing rib; 6. Third connecting part; 61. Grid-shaped reinforcing rib; 7. Triangular reinforcing plate; 8. Fourth connecting part; 81. Avoidance. DETAILED DESCRIPTION
[0023] The present invention is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted under different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.
[0024] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.
[0025] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).
[0026] In one embodiment, please refer to Figure 1 and Figure 2 The spindle box includes a spindle mounting portion 1 and a machine tool mounting portion 2 respectively arranged on opposite sides of the spindle box. The spindle mounting portion 1 is located at the upper part of the spindle box, and the machine tool mounting portion 2 is located at the lower part of the spindle box. It should be understood that the orientation of the spindle mounting portion 1 and the machine tool mounting portion 2 in actual use is not necessarily as shown in the figure. The aforementioned "upper part" and "lower part" are only used to describe the structure of the spindle box and cannot be understood as a limitation on the assembly direction of the spindle box when in use. The machine tool mounting portion 2 is used to assemble the spindle box on the machine tool body. A spindle hole 11 is provided on the spindle mounting portion 1, and the spindle hole 11 is used to install the spindle and to position and support the spindle.
[0027] The spindle box also includes a first connecting part 3 and a second connecting part 4, which are connected between the spindle mounting part 1 and the machine tool mounting part 2, and the first connecting part 3 and the second connecting part 4 are arranged opposite to each other and are located on both sides of the spacing direction between the spindle mounting part 1 and the machine tool mounting part 2.
[0028] For a specific embodiment, please refer to Figure 1 The spindle housing is integrally cast, with the first and second connecting portions 3 and 4 being plate-like structures, connected between the spindle mounting portion 1 and the machine tool mounting portion 2. A spindle cavity is formed within the spindle housing, with the first and second connecting portions 3 and 4 located on the left and right sides of the spindle cavity, respectively. The first and second connecting portions 3 and 4 securely connect the spindle mounting portion 1 and the machine tool mounting portion 2.
[0029] At least one reinforcement unit 5 is provided on the inner side of the first connection part 3 and the inner side of the second connection part 4. The reinforcement unit 5 includes an annular reinforcement rib 51 and a plurality of strip reinforcement ribs 52. The annular reinforcement rib 51 is located in the middle position of the first connection part 3 or the second connection part 4. The plurality of strip reinforcement ribs 52 are arranged at intervals along the outer periphery of the annular reinforcement rib 51 and are fixedly connected to the annular reinforcement rib 51.
[0030] The reinforcement unit 5 has an overall sun-shaped shape, with the annular and strip reinforcement ribs 51 and 52 integrally formed with the first and second connecting parts 3 and 4. The annular and strip reinforcement ribs 51 and 52 enhance the rigidity of the first and second connecting parts 3 and 4, improving their resistance to deformation and shock, while also enhancing the spindle box's torsional resistance. Furthermore, the annular and strip reinforcement ribs 51 and 52 reduce the spindle box's weight.
[0031] In some embodiments, please refer to Figure 3 and Figure 4 A first reinforcing rib 53 is provided on the inner side of the first connecting part 3 and the inner side of the second connecting part 4. The first reinforcing rib 53 is parallel to the axial direction of the main shaft hole 11. Two reinforcing units 5 are provided. The two reinforcing units 5 are respectively located on both sides of the first reinforcing rib 53, and the strip reinforcing rib 52 in the reinforcing unit 5 is connected to the first reinforcing rib 53.
[0032] When the spindle rotates within the spindle bore 11, it generates a significant amount of heat. This heat is transferred from the spindle mounting portion 1 to the machine tool mounting portion 2, causing thermal deformation. The provision of the first reinforcing rib 53 can mitigate thermal deformation, preventing further transfer of this deformation to the machine tool mounting portion 2. Specifically, the provision of two reinforcing units 5 can reinforce the areas on either side of the first reinforcing rib 53, respectively, improving the deformation resistance of the first and second connecting portions 3 and 4, and thereby enhancing the torsional resistance of the spindle housing.
[0033] In some embodiments, please refer to Figure 1 and Figure 2 The spindle box includes a third connecting part 6 and a fourth connecting part 8, and the third connecting part 6 and the fourth connecting part 8 are located between the first connecting part 3 and the second connecting part 4. A grid-like reinforcing rib 61 is provided on the inner side of the third connecting part 6, and the grid-like reinforcing rib 61 and the third connecting part 6 are integrally formed by casting. The provision of the grid-like reinforcing rib 61 can strengthen the rigidity of the third connecting part 6 and improve its anti-deformation ability. A mounting structure is provided on the fourth connecting part 8, specifically, the mounting structure can be a fixing hole provided on the fourth connecting part 8, and the fixing hole can be used to fix machine tool parts such as motors.
[0034] In some embodiments, please refer to Figure 3-Figure 5 The strip reinforcement ribs 52 and the first reinforcement ribs 53 extend to the third connection part 6 and are connected to the grid-shaped reinforcement ribs 61. The above arrangement strengthens the connection strength between the first connection part 3, the second connection part 4 and the third connection part 6, thereby improving the overall strength of the spindle box.
[0035] In some embodiments, please refer to Figure 1-Figure 5 The fourth connecting portion 8 is provided with a clearance opening 81 for the power supply shaft to pass into the spindle housing. The spindle mounting portion 1 also includes a pulley mounting cavity 16, which is axially disposed on a side of the spindle hole 11 near the fourth connecting portion 8. The spindle mounting portion 1 is provided with a pulley mounting hole 17 that communicates with the pulley mounting cavity 16. Specifically, the motor can be mounted on the fourth connecting portion 8, with the motor shaft extending into the spindle housing through the clearance opening 81. A transmission belt disposed within the pulley mounting cavity 16 connects the motor shaft to the spindle.
[0036] In some embodiments, please refer to Figure 1and Figure 2 The outer periphery of the spindle mounting portion 1 is provided with a second reinforcing rib 12 and a plurality of third reinforcing ribs 13. The second reinforcing rib 12 is arranged along the axial direction of the spindle mounting portion 1, and the plurality of third reinforcing ribs 13 are arranged perpendicular to the second reinforcing rib 12 and at intervals. The second and third reinforcing ribs 12, 13 are arranged corresponding to the spindle hole. Specifically, the spindle hole 11 is located at the front of the spindle mounting portion 1, and the second and third reinforcing ribs 12, 13 are located on the outer periphery of the spindle hole 11. A pulley mounting hole 17 is also provided on the rear top surface of the spindle mounting portion 1. The provision of the pulley mounting hole 17 facilitates the installation of the transmission belt or transmission chain that drives the spindle.
[0037] The provision of the second and third reinforcing ribs 12, 13 can enhance the strength of the spindle mounting portion 1, thereby providing better support for the spindle by the spindle mounting portion 1, thereby improving the machining accuracy of the machine tool. Furthermore, the second and third reinforcing ribs 12, 13 are disposed on the outside of the spindle mounting portion 1, increasing the contact area with the air. Heat generated during spindle rotation can be released more quickly, and the degree of thermal deformation of the spindle mounting portion 1 is reduced, thereby improving the accuracy of the machine tool. Furthermore, the provision of the second and third reinforcing ribs 12, 13 also reduces the weight of the spindle box, thereby lowering its manufacturing cost.
[0038] In some embodiments, please refer to Figure 1 and Figure 2 , the first connecting portion 3 and the second connecting portion 4 form a first side surface and a second side surface respectively, and a chamfer 14 is provided between the top surface of the spindle mounting portion 1 and the first side surface and the second side surface. The chamfer 14 can be in the form of an arc chamfer 14 or a straight chamfer 14. In this embodiment, the first side surface and the second side surface correspond to the left side and the right side in the figure respectively. The top surface of the spindle mounting portion 1 should be understood as the surface on the spindle box away from the machine tool mounting portion 2. Providing the chamfer 14 can reduce the mass of the spindle box, and at the same time can improve the stress distribution of the spindle mounting portion 1 and reduce the degree of deformation.
[0039] In some embodiments, please refer to Figure 1-Figure 5 A single second reinforcing rib 12 is provided and located on the top surface of the spindle mounting portion 1. The spindle mounting portion 1 has a cooling oil hole 15 disposed on the second reinforcing rib 12. The cooling oil hole 15 is used to deliver cooling oil to cool the spindle. Specifically, the second reinforcing rib 12 is located in the middle of the top surface of the spindle mounting portion 1. The cooling oil hole 15 disposed on the second reinforcing rib 12 is aligned with the axis of the spindle bore 11, facilitating the circulation of cooling oil into the spindle bore 11.
[0040] In some embodiments, please refer to Figure 1 and Figure 2The machine tool mounting portion 2 is a plate-like structure with flanges formed at corresponding locations on the spindle housing. Triangular reinforcement plates 7 are installed where the first and second connecting portions 3 and 4 connect to the machine tool mounting portion 2. The flanged structure of the machine tool mounting portion 2 facilitates assembly with the machine tool body. The installation of the triangular reinforcement plates 7 disperses stress in the connection area, reducing metal fatigue that can occur under long-term use or heavy loads. Furthermore, the inclusion of the triangular reinforcement plates 7 improves the seismic resistance of the overall spindle housing structure.
[0041] In some embodiments, a plurality of triangular reinforcing plates 7 are provided, and the plurality of triangular reinforcing plates 7 are arranged at intervals. The provision of a plurality of reinforcing plates can strengthen the first connecting portion 3, the second connecting portion 4 and the machine tool mounting portion 2 without increasing the mass of the spindle box. In this embodiment, please refer to Figure 1 , three triangular reinforcing plates 7 are provided.
[0042] In some embodiments, the first and second connecting portions 3 and 4 are provided with lifting holes 41 at locations where the reinforcement units 5 are provided. These lifting holes 41 are used to lift the spindle housing. Specifically, the two lifting holes 41 are arranged opposite each other on the spindle housing. Positioning the lifting holes 41 in the portion with the reinforcement units 5 can increase the load-bearing capacity of the lifting holes 41, making lifting the spindle housing through the lifting holes 41 safer.
[0043] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.
Claims
1. A spindle box, characterized in that: It includes a spindle mounting portion and a machine tool mounting portion spaced apart on opposite sides of a spindle box, wherein the machine tool mounting portion is used to connect to a machine tool, and a spindle hole is provided on the spindle mounting portion, wherein the spindle hole is used to mount a spindle; The spindle box also includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are connected between the spindle mounting part and the machine tool mounting part, and the first connecting part is arranged opposite to the second connecting part; at least one reinforcement unit is provided on the inner side of the first connecting part and the inner side of the second connecting part, and the reinforcement unit includes an annular reinforcement rib and a plurality of strip reinforcement ribs, the annular reinforcement rib is located in the middle position of the first connecting part or the second connecting part, and the plurality of strip reinforcement ribs are arranged at intervals along the outer periphery of the annular reinforcement rib and are fixedly connected to the annular reinforcement rib.
2. The spindle box according to claim 1, characterized in that: A first reinforcing rib is provided on the inner side of the first connecting portion and the inner side of the second connecting portion. The first reinforcing rib is parallel to the axial direction of the main shaft hole. Two reinforcing units are provided, and the two reinforcing units are respectively located on both sides of the first reinforcing rib.
3. The spindle box according to claim 2, characterized in that: The spindle box includes a third connecting part and a fourth connecting part, the third connecting part and the fourth connecting part are located between the first connecting part and the second connecting part, a grid-shaped reinforcing rib is provided on the inner side of the third connecting part, and a mounting structure is provided on the fourth connecting part.
4. The spindle box according to claim 3, characterized in that: The strip-shaped reinforcement ribs and the first reinforcement ribs extend to the third connecting portion and are connected to the grid-shaped reinforcement ribs.
5. The spindle box according to claim 3, characterized in that: The fourth connecting part is provided with an avoidance opening for the power supply shaft to pass through the main spindle box, and the main spindle mounting part also includes a pulley mounting cavity, which is arranged on the side of the main spindle hole close to the fourth connecting part along the axial direction of the main spindle hole, and the main spindle mounting part is provided with a pulley mounting hole connected to the pulley mounting cavity.
6. The spindle box according to claim 1, characterized in that: The outer periphery of the main shaft mounting portion is provided with a second reinforcing rib and a plurality of third reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs are arranged corresponding to the main shaft hole, the second reinforcing ribs are arranged along the axial direction of the main shaft mounting portion, and the plurality of third reinforcing ribs are perpendicular to the second reinforcing ribs and arranged at intervals.
7. The spindle box according to claim 6, characterized in that: The first connecting portion and the second connecting portion form a first side surface and a second side surface respectively, and chamfers are provided between the top surface of the spindle mounting portion and the first side surface and the second side surface.
8. The spindle box according to claim 6, characterized in that: The second reinforcing rib is provided in one piece and is located on the top surface of the spindle mounting portion. The spindle mounting portion has a cooling oil hole, which is provided on the second reinforcing rib. The cooling oil hole is used to transport cooling oil to cool the spindle.
9. The spindle box according to any one of claims 1 to 8, characterized in that: The machine tool mounting part is a plate-like structure and a flange is formed at the corresponding position of the spindle box. Triangular reinforcing plates are provided at the positions where the first connecting part, the second connecting part and the machine tool mounting part are connected. There are multiple triangular reinforcing plates, and the multiple triangular reinforcing plates are arranged at intervals.
10. The spindle box according to any one of claims 1 to 8, characterized in that: The first connecting portion and the second connecting portion are provided with hoisting holes at positions where the reinforcing units are provided, and the hoisting holes are used for hoisting the main spindle box.