Direct connection main shaft with wind noise prevention structure

Abstract

The utility model belongs to the technical field of direct-connection spindles, and particularly relates to a direct-connection spindle with an anti-wind-noise structure, which comprises a spindle body. According to the utility model, the belt pulley is fixed on the conical part of the expansion sleeve through the bolt, the expansion sleeve and the belt pulley are sleeved at the opening of the unclamping block of the rotating shaft, then the knob is rotated to drive the connecting rod to move through the screw rod, the connecting rod drives the clamping plates to move, and the expansion sleeve is fixed on the rotating shaft through the two clamping plates; the expansion sleeve is tightly attached to the rotating shaft through the special expansion performance of the expansion sleeve, firm connection between the belt pulley and the rotating shaft is guaranteed, the inner diameter can be adjusted according to main shafts with different outer diameters, wide adaptability is achieved, the belt pulley completely covers the opening of the unclamping block, wind noise is effectively prevented, and the service life of the unclamping block is prolonged. Through perfect combination of the belt pulley and the expansion sleeve, stable transmission of power is ensured, efficient and stable rotation is achieved, wind noise is effectively reduced, and more reliable and comfortable use experience is provided for users.

Description

Technical Field

[0001] The utility model relates to the technical field of direct-connected spindles, in particular to a direct-connected spindle with a windproof structure. Background Art

[0002] In the field of mechanical processing, the direct-connected spindle is the core component of the machine tool, and its performance directly affects the processing accuracy and efficiency of the machine tool. The traditional direct-connected spindle design usually adopts the direct belt method to realize the spindle drive;

[0003] However, while the direct-attach belt design offers a simple structure, it can generate significant wind noise at high speeds. This wind noise not only impacts operator comfort but can also adversely affect the machine's machining accuracy. This wind noise issue is particularly prominent in environments with stringent noise control requirements, such as precision machining workshops. Furthermore, while the design of the cutter block opening facilitates tool replacement and positioning, it can also be a source of wind noise. In the gap between the cutter block and the spindle, air flow can generate eddies and turbulence, exacerbating wind noise. Therefore, we proposed a direct-attach spindle with a wind noise-proof structure to address this issue. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a direct-connected main shaft with a windproof structure, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] A direct-connected spindle with a windproof structure comprises a spindle body, a rotating shaft rotatably connected to the spindle body, a knife block opening is opened on the rotating shaft, a tightening sleeve is provided on the rotating shaft, one side of the tightening sleeve is set as a tapered portion, a pulley is provided on the tapered portion, a plurality of locking holes are opened in a ring shape on one side of the tightening sleeve, the locking holes are threadedly connected to the pulley through bolts, and two rectangular blocks are fixedly connected to one side of the tightening sleeve, a screw rod is rotatably connected to the rectangular block, a knob is fixedly connected to the end of the screw rod, a connecting rod is threadedly connected to the screw rod, a splint is welded to the end of the connecting rod, and the splint is in movable contact with the rotating shaft.

[0009] Furthermore, two grooves are provided on one side of the expansion sleeve, and a limiting block is slidably connected to the groove, and one side of the limiting block is fixedly connected to one side of the corresponding connecting rod.

[0010] Furthermore, a threaded hole is provided on the connecting rod, and the connecting rod is threadedly connected to the corresponding screw rod through the threaded hole.

[0011] Furthermore, a plurality of thread grooves are provided in an annular shape on one side of the pulley, and the pulley is threadably connected to the bolt via the thread grooves.

[0012] Furthermore, a mounting hole is provided on the rectangular block, and a bearing is fixedly connected to the inner wall of the mounting hole.

[0013] Furthermore, the inner side of the inner ring of the bearing is welded to the outer side of the corresponding screw rod.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the present invention provides a direct-connected spindle with a windproof structure, which has the following beneficial effects:

[0016] The utility model fixes the pulley to the tapered part of the expansion sleeve by bolts, and then puts the expansion sleeve and the pulley on the opening of the cutting block of the rotating shaft, and then turns the knob to drive the connecting rod to move through the screw, and the connecting rod drives the corresponding clamping plate to move, and fixes the expansion sleeve to the rotating shaft through the two clamping plates. The expansion sleeve fits tightly on the rotating shaft due to its special expansion performance. This connection method not only ensures a firm connection between the pulley and the rotating shaft, but also makes the inner diameter adjustable according to the spindles with different outer diameters, thereby achieving a wide range of adaptability. The pulley completely covers the opening of the cutting block, effectively blocking the generation of wind noise. At the same time, the perfect combination of the pulley and the expansion sleeve ensures smooth transmission of power, realizes efficient and stable rotation, and effectively reduces wind noise, providing users with a more reliable and comfortable use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the pulley and the expansion sleeve of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the pulley and the expansion sleeve connection of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the expansion sleeve of the utility model.

[0021] In the figure: 1. Spindle body; 2. Rotating shaft; 3. Cutting block opening; 4. Expansion sleeve; 5. Conical part; 6. Pulley; 7. Locking hole; 8. Bolt; 9. Rectangular block; 10. Screw; 11. Knob; 12. Connecting rod; 13. Clamp; 14. Groove; 15. Limit block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example

[0024] like Figure 1-4 As shown, an embodiment of the present invention proposes a direct-connected spindle with a windproof structure, including a spindle body 1, a rotating shaft 2 is rotatably connected to the spindle body 1, a knife block opening 3 is opened on the rotating shaft 2, a tightening sleeve 4 is provided on the rotating shaft 2, one side of the tightening sleeve 4 is set as a tapered portion 5, a pulley 6 is provided on the tapered portion 5, a plurality of locking holes 7 are opened in a ring shape on one side of the tightening sleeve 4, the locking holes 7 are threadedly connected to the pulley 6 through bolts 8, one side of the tightening sleeve 4 is fixedly connected to two rectangular blocks 9, a screw rod 10 is rotatably connected to the rectangular block 9, a knob 11 is fixedly connected to the end of the screw rod 10, a connecting rod 12 is threadedly connected to the screw rod 10, a splint 13 is welded to the end of the connecting rod 12, the splint 13 is in active contact with the rotating shaft 2, the pulley 6 is fixed to the tapered portion 5 of the tightening sleeve 4 by bolts 8, and then Put the expansion sleeve 4 and the pulley 6 on the opening 3 of the cutting block of the rotating shaft 2, then turn the knob 11 to drive the connecting rod 12 to move through the screw rod 10, and the connecting rod 12 drives the corresponding splint 13 to move, and fix the expansion sleeve 4 on the rotating shaft 2 through the two splints 13. The expansion sleeve 4 fits tightly on the rotating shaft 2 due to its special expansion performance. This connection method not only ensures a firm connection between the pulley 6 and the rotating shaft 2, but also allows the inner diameter to be adjusted according to the spindles with different outer diameters, thereby achieving a wide range of adaptability. The pulley 6 completely covers the opening 3 of the cutting block, effectively blocking the generation of wind noise. At the same time, the perfect combination of the pulley 6 and the expansion sleeve 4 ensures smooth power transmission, achieves efficient and stable rotation, and effectively reduces wind noise, providing users with a more reliable and comfortable use experience.

[0025] In some embodiments, two grooves 14 are provided on one side of the expansion sleeve 4, and a limit block 15 is slidably connected to the groove 14. One side of the limit block 15 is fixedly connected to one side of the corresponding connecting rod 12. The fixed connection between the limit block 15 and the connecting rod 12, and the sliding fit of the limit block 15 in the groove 14 together constitute a stable connection structure. This structure can effectively prevent the expansion sleeve 4 from deflecting or loosening when subjected to external force, thereby ensuring the stability and reliability of the connection.

[0026] In some embodiments, a threaded hole is provided on the connecting rod 12, and the connecting rod 12 is threadedly connected to the corresponding screw rod 10 through the threaded hole. The threaded connection is a method of achieving connection through the mutual engagement of threads, and has high reliability. This connection method is not easy to loosen and can withstand large tensile and shear forces, thereby ensuring a stable connection between the connecting rod 12 and the screw rod 10.

[0027] In some embodiments, a plurality of thread grooves are provided in a ring shape on one side of the pulley 6, and the pulley 6 is threadedly connected to the bolt 8 through the thread groove. The threaded connection design makes it easier to replace the expansion sleeve 4. The staff only needs to tighten or loosen the bolt 8 to easily fix the expansion sleeve 4 on the pulley 6 or remove it from it.

[0028] In some embodiments, a mounting hole is provided on the rectangular block 9, and a bearing is fixedly connected to the inner wall of the mounting hole. The provision of the bearing serves a connecting function.

[0029] In some embodiments, the inner side of the inner ring of the bearing is welded to the outer side of the corresponding screw rod 10. By welding, the bearing and the screw rod 10 are fixed more securely.

[0030] Working principle or structural principle, when in use, the pulley 6 is fixed to the conical part 5 of the expansion sleeve 4 by the bolt 8, and then the expansion sleeve 4 and the pulley 6 are sleeved on the knife block opening 3 of the rotating shaft 2, and then the knob 11 is turned. The knob 11 drives the corresponding connecting rod 12 to move through the screw rod 10, and the connecting rod 12 drives the corresponding splint 13 to move. The connecting rod 12 drives the corresponding limit block 15 to slide on the groove 14, and the expansion sleeve 4 is fixed to the rotating shaft 2 through the two splints 13. The expansion sleeve 4 is fixed to the rotating shaft 2 through its special expansion sleeve 4. Performance, tightly fits on the rotating shaft 2, this connection method not only ensures a firm connection between the pulley 6 and the rotating shaft 2, but also allows the inner diameter to be adjusted according to the spindles with different outer diameters, thereby achieving a wide range of adaptability, the pulley 6 completely covers the opening 3 of the knife block, effectively blocking the generation of wind noise, at the same time, the perfect combination of the pulley 6 and the expansion sleeve 4 ensures the smooth transmission of power, realizes efficient and stable rotation, and effectively reduces wind noise, providing users with a more reliable and comfortable use experience.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A direct-connected spindle with a windproof structure, comprising a spindle body (1), characterized in that: The main shaft body (1) is rotatably connected to a rotating shaft (2), a knife block opening (3) is provided on the rotating shaft (2), a tightening sleeve (4) is provided on the rotating shaft (2), one side of the tightening sleeve (4) is set as a tapered portion (5), a pulley (6) is provided on the tapered portion (5), a plurality of locking holes (7) are provided on one side of the tightening sleeve (4) in an annular shape, the locking holes (7) are threadedly connected to the pulley (6) through bolts (8), one side of the tightening sleeve (4) is fixedly connected to two rectangular blocks (9), a screw rod (10) is rotatably connected to the rectangular block (9), the end of the screw rod (10) is fixedly connected to a knob (11), a connecting rod (12) is threadedly connected to the screw rod (10), the end of the connecting rod (12) is welded with a splint (13), and the splint (13) is in movable contact with the rotating shaft (2).

2. The direct-connected spindle with a windproof structure according to claim 1, characterized in that: Two grooves (14) are provided on one side of the expansion sleeve (4), and a limiting block (15) is slidably connected to the groove (14), and one side of the limiting block (15) is fixedly connected to one side of the corresponding connecting rod (12).

3. The direct-connected main shaft with a windproof structure according to claim 1, characterized in that: A threaded hole is provided on the connecting rod (12), and the connecting rod (12) is threadedly connected to the corresponding screw rod (10) through the threaded hole.

4. The direct-connected spindle with a windproof structure according to claim 1, characterized in that: One side of the pulley (6) is provided with a plurality of thread grooves in an annular shape, and the pulley (6) is threadably connected to the bolt (8) via the thread grooves.

5. The direct-connected main shaft with a windproof structure according to claim 1, characterized in that: A mounting hole is provided on the rectangular block (9), and a bearing is fixedly connected to the inner wall of the mounting hole.

6. The direct-connected main shaft with a windproof structure according to claim 5, characterized in that: The inner side of the inner ring of the bearing is welded to the outer side of the corresponding screw rod (10).

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