Rotating shaft mechanism and processing machine tool

Abstract

The utility model discloses a rotating shaft mechanism and a processing machine tool, which belong to the field of machine tool processing, and the rotating shaft mechanism comprises a rotating shaft, a plurality of first adjusting holes, a plurality of second adjusting holes, a plurality of first adjusting blocks and a plurality of second adjusting blocks, the transmission gear is arranged outside the rotating shaft in a sleeving mode, the transmission gear is concaved inwards from the outer circumferential side of the transmission gear to form second adjusting holes penetrating to the inner circumferential side, the number of the second adjusting holes is multiple, and the second adjusting holes correspond to the first adjusting holes in a one-to-one mode; the threaded adjusting pieces correspond to the first adjusting holes and / or the second adjusting holes in a one-to-one mode, are in threaded connection with the second adjusting holes and partially abut against the first adjusting holes; the rotating shaft and the transmission gear are suitable for being kept coaxial under adjustment of the threaded adjusting piece. By the adoption of the structure, the coaxiality after the transmission gear and the rotating shaft are installed can be guaranteed, the transmission gear and the rotating shaft are tightly connected after being assembled, and the coaxiality of the transmission gear and the rotating shaft is prevented from being affected in the follow-up using process.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, and in particular to a rotating shaft mechanism and a machine tool. Background Technology

[0002] Machine tools such as lathes and milling machines typically require either a cutting tool or a workpiece to rotate for machining operations. The output section of these machine tools includes a spindle mechanism. The cutting tool or workpiece is mounted on this mechanism via a support structure, enabling its rotation. This spindle mechanism usually consists of a spindle and a transmission gear fixedly mounted on the spindle. The machine tool is equipped with a drive motor, and a transmission structure connects the drive motor and the transmission gear to transmit the rotational force from the drive motor to the spindle. However, in actual assembly, after the transmission gear is mounted on the spindle, ensuring coaxiality between the two is difficult, making adjustments cumbersome. Even if the spindle and transmission gear are aligned during assembly, they are prone to relative displacement after prolonged use, leading to significant noise and damage to the spindle mechanism and shortening its service life.

[0003] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects. Utility Model Content

[0004] The purpose of this utility model is to provide a rotating shaft mechanism and a processing machine tool to ensure the coaxiality of the transmission gear and the rotating shaft after installation, and to ensure that the two are tightly connected after assembly, so as to avoid affecting the coaxiality of the two during subsequent use.

[0005] The purpose of this utility model is achieved through the following technical solution: a rotating shaft mechanism, comprising:

[0006] The rotating shaft has a first adjustment hole recessed inward from its circumference. There are multiple first adjustment holes, which are evenly distributed along the circumference of the rotating shaft.

[0007] A transmission gear is sleeved on the outside of the rotating shaft. The transmission gear has a second adjustment hole that extends from its outer circumference to its inner circumference. There are multiple second adjustment holes, and each of them corresponds to one of the first adjustment holes.

[0008] There are multiple threaded adjustment parts, each corresponding to one of the first adjustment hole and / or the second adjustment hole. They are threadedly connected to the second adjustment hole and partially abut against the first adjustment hole.

[0009] The rotating shaft and the transmission gear are adapted to remain coaxial under the adjustment of the threaded adjustment member.

[0010] Furthermore, the first adjusting hole is a tapered hole, and the inner diameter of the first adjusting hole gradually decreases in the concave direction of the first adjusting hole.

[0011] Furthermore, the head contour of the threaded adjustment member is the same as the contour of the first adjustment hole, and the head contour dimension of the threaded adjustment member is larger than the contour dimension of the first adjustment hole.

[0012] Furthermore, there are three first adjustment holes, and all of the first adjustment holes are located on the same circumference.

[0013] Furthermore, a fastening adhesive is provided between the threaded adjusting member and the rotating shaft, and / or a fastening adhesive is provided between the threaded adjusting member and the transmission gear.

[0014] Furthermore, a first keyway is formed by an inwardly recessed circumferential side of the rotating shaft, and a second keyway corresponding to the first keyway is formed by an inwardly recessed inner circumferential side of the transmission gear, with a key block fixed between the first keyway and the second keyway.

[0015] Furthermore, the transmission gear has teeth at one end in the axial direction, and the second keyway extends along the axial direction of the transmission gear to the other end of the transmission gear.

[0016] Furthermore, the first keyway and the plurality of first adjustment holes are all located on the same circumference, with the first keyway located between two adjacent first adjustment holes.

[0017] Furthermore, a balance hole is formed by an inwardly recessed circumferential side of the rotating shaft, and the balance hole is arranged opposite to the first keyway.

[0018] In addition, this utility model also provides a machine tool, including the aforementioned rotating shaft mechanism.

[0019] Compared with the prior art, the present invention has the following advantages: By opening a first adjustment hole on the rotating shaft and a second adjustment hole on the transmission gear, when the transmission gear is sleeved on the rotating shaft, a threaded adjustment component is threadedly connected to the second adjustment hole. The threaded adjustment component abuts against the first adjustment hole, making the connection between the rotating shaft and the transmission gear tighter and preventing relative displacement between them, thus ensuring coaxiality after long-term use. In addition, by rotating the threaded adjustment component, the rotating shaft and the transmission gear are suitable for radial relative movement for position adjustment, thereby ensuring that the rotating shaft and the transmission gear are coaxial. The adjustment is convenient and avoids generating large noise and damage to the rotating shaft mechanism, thus extending the service life of the rotating shaft mechanism. Attached Figure Description

[0020] Figure 1 This is an exploded structural diagram of the rotating shaft mechanism of this utility model.

[0021] Figure 2 This is a schematic diagram of the rotating shaft mechanism of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the rotating shaft in this utility model.

[0023] Figure 4 This is a schematic diagram of the transmission gear in this utility model.

[0024] 100, Rotating shaft; 110, First adjusting hole; 120, First keyway; 130, Balance hole; 200, Transmission gear; 210, Second adjusting hole; 220, Second keyway; 230, Tooth. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0026] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] Please see Figures 1 to 4As shown, a rotating shaft mechanism corresponding to a preferred embodiment of the present invention includes: a rotating shaft 100, having a first adjusting hole 110 recessed from its circumference inward, the number of first adjusting holes 110 being multiple and evenly distributed along the circumference of the rotating shaft 100; a transmission gear 200 sleeved on the rotating shaft 100, the transmission gear 200 having a second adjusting hole 210 recessed from its outer circumference inward to its inner circumference inward, the number of second adjusting holes 210 being multiple and corresponding one-to-one with the first adjusting holes 110; and a threaded adjusting member (not shown), the number of which is multiple and corresponds one-to-one with the first adjusting hole 110 and / or the second adjusting hole 210, the adjusting member being threadedly connected to the second adjusting hole 210 and partially abutting against the first adjusting hole 110; wherein, the rotating shaft 100 and the transmission gear 200 are adapted to remain coaxial under the adjustment of the threaded adjusting member.

[0029] This invention features a first adjustment hole 110 on the rotating shaft 100 and a second adjustment hole 210 on the transmission gear 200. When the transmission gear 200 is fitted onto the rotating shaft 100, a threaded adjustment element is threaded into the second adjustment hole 210. The threaded adjustment element abuts against the first adjustment hole 110, making the connection between the rotating shaft 100 and the transmission gear 200 more compact and preventing relative displacement, thus ensuring coaxiality after long-term use. Furthermore, by rotating the threaded adjustment element, the rotating shaft 100 and the transmission gear 200 can move radially relative to each other for position adjustment, thereby ensuring that the rotating shaft 100 and the transmission gear 200 are coaxial. This facilitates adjustment, avoids excessive noise and damage to the rotating shaft mechanism, and extends the service life of the rotating shaft mechanism.

[0030] Furthermore, in this embodiment, the first adjusting hole 110 is a conical hole, and the contour of the conical hole can be conical or frustum-shaped. The inner diameter of the first adjusting hole 110 gradually decreases in the concave direction. The threaded adjusting component includes, but is not limited to, bolts, screws, etc. The head contour of the threaded adjusting component is the same as the contour of the first adjusting hole 110, and the head contour size of the threaded adjusting component is larger than the contour size of the first adjusting hole 110, so that when the head of the threaded adjusting component is screwed into the first adjusting hole 110, its conical surface can abut against the conical surface of the first adjusting hole 110. Compared to a conventional cylindrical hole, the first adjusting hole 110 with a conical surface structure allows for a tighter abutment between the head of the threaded adjusting component and the first adjusting hole 110 after the head of the threaded adjusting component is screwed into the first adjusting hole 110, resulting in a tighter connection between the rotating shaft 100 and the transmission gear 200.

[0031] Furthermore, in this embodiment, there are three first adjustment holes 110, with adjacent first adjustment holes 110 arranged at 120° intervals, and all the first adjustment holes 110 are located on the same circumference. By adopting the above structure, the number of first adjustment holes 110 can be reduced sufficiently to simplify the structure, while ensuring a tight fit between the rotating shaft 100 and the transmission gear 200, and facilitating coaxial adjustment.

[0032] Preferably, a fastening adhesive is provided between the threaded adjusting component and the rotating shaft 100, and / or between the threaded adjusting component and the transmission gear 200. By applying the fastening adhesive, the threaded adjusting component is less likely to rotate relative to the rotating shaft 100 and / or the transmission gear 200 after installation and adjustment, preventing the rotating shaft 100 and the transmission gear 200 from loosening and improving reliability during subsequent use. The fastening adhesive can specifically be anaerobic adhesive or thread-locking adhesive. When the rotating shaft mechanism needs to be disassembled later, it is only necessary to heat the rotating shaft mechanism or use a special solvent or relaxant to release the fastening adhesive.

[0033] Furthermore, the rotating shaft 100 and the transmission gear 200 are connected by a keyway. A first keyway 120 is formed by an inwardly recessed circumferential side of the rotating shaft 100, and a second keyway 220 is formed by an inwardly recessed inner circumferential side of the transmission gear 200. When the transmission gear 200 is installed in a preset position, the first keyway 120 and the second keyway 220 correspond to each other, and a key block (not shown) is provided between the first keyway 120 and the second keyway 220. By adopting the above structure, when the transmission gear 200 is fitted onto the rotating shaft 100, the axial and circumferential positioning of the transmission gear 200 can be effectively achieved, ensuring that the transmission gear 200 is reliably and accurately installed on the rotating shaft 100. In this embodiment, the transmission gear 200 has a tooth 230 formed at one end in the axial direction, and the second keyway 220 extends along the axial direction of the transmission gear 200 to the other end of the transmission gear 200.

[0034] During installation, the key block can be first fixedly embedded in the first keyway 120, so that the key block protrudes from the circumference of the rotating shaft 100. Then, the transmission gear 200 is sleeved on the rotating shaft 100, and the second keyway 220 is positioned so that the open side of the end of the transmission gear 200 faces the key block. Then, the transmission gear 200 is moved toward the key block so that the part of the key block protruding from the rotating shaft 100 is fitted and engaged with the second keyway 220, thereby achieving the positioning of the transmission gear 200 in the axial and circumferential directions. After the transmission gear 200 is positioned, the first adjustment hole 110 and the second adjustment hole 210 correspond one-to-one, which facilitates the installation of the threaded adjustment component.

[0035] Furthermore, the first keyway 120 and the plurality of first adjusting holes 110 are all located on the same circumference, with the first keyway 120 positioned between two adjacent first adjusting holes 110. A balance hole 130 is formed by an inwardly recessed circumferential side of the rotating shaft 100, and the balance hole 130 is arranged opposite to the first keyway 120. The balance hole 130 is located on one side of one of the first adjusting holes 110 along the axial direction of the rotating shaft 100, and is arranged side-by-side with that first adjusting hole 110. When there is a problem with the dynamic balance of the rotating shaft mechanism, the mass distribution of the rotating shaft 100 can be changed by grinding or replacing the key blocks to adjust the dynamic balance, making the center of mass of the rotating shaft 100 tend towards the axis of rotation, thus ensuring optimal dynamic balance.

[0036] In addition, this utility model also provides a machine tool, including the aforementioned rotating shaft mechanism.

[0037] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A rotation shaft mechanism characterized by comprising: The application relates to a rotating shaft mechanism, comprising: a rotating shaft (100) with a plurality of first adjusting holes (110) formed in the circumferential side of the rotating shaft (100) and uniformly distributed along the circumference of the rotating shaft (100); a transmission gear (200) sleeved on the rotating shaft (100), the transmission gear (200) is provided with a plurality of second adjusting holes (210) formed in the outer circumferential side of the transmission gear (200) and penetrating to the inner circumferential side, and the second adjusting holes (210) correspond to the first adjusting holes (110) one by one; a plurality of threaded adjusting members corresponding to the first adjusting holes (110) and / or the second adjusting holes (210), the threaded adjusting members are in threaded connection with the second adjusting holes (210) and partially abut against the first adjusting holes (110); wherein the rotating shaft (100) and the transmission gear (200) are adapted to keep coaxial under the adjustment of the threaded adjusting members.

2. The rotation shaft mechanism according to claim 1, wherein The first adjusting hole (110) is a tapered hole, and the inner diameter of the first adjusting hole (110) gradually decreases in the recess direction of the first adjusting hole (110).

3. The rotation shaft mechanism according to claim 2, wherein The head profile of the threaded adjusting member is the same as the profile of the first adjusting hole (110), and the head profile size of the threaded adjusting member is larger than the profile size of the first adjusting hole (110).

4. The rotation shaft mechanism according to claim 1, wherein The number of the first adjusting holes (110) is three, and the plurality of first adjusting holes (110) are on the same circumference.

5. The rotation shaft mechanism according to claim 1, wherein Fastening glue is arranged between the threaded adjusting member and the rotating shaft (100), and / or fastening glue is arranged between the threaded adjusting member and the transmission gear (200).

6. The rotation mechanism according to claim 1, wherein The circumferential side of the rotating shaft (100) is recessed inward to form a first key groove (120), the inner circumferential side of the transmission gear (200) is recessed inward to form a second key groove (220) corresponding to the first key groove (120), and a key block is fixed between the first key groove (120) and the second key groove (220).

7. The rotation mechanism according to claim 6, wherein The transmission gear (200) is provided with a tooth portion (230) at one end in the axial direction, and the second key groove (220) penetrates to the other end of the transmission gear (200) along the axial direction of the transmission gear (200).

8. The rotation mechanism according to claim 6, wherein The first key groove (120) and the plurality of first adjusting holes (110) are on the same circumference, and the first key groove (120) is located between the adjacent two first adjusting holes (110).

9. The rotation mechanism according to claim 6, wherein The circumferential side of the rotating shaft (100) is recessed inward to form a balance hole (130), and the balance hole (130) is arranged opposite to the first key groove (120).

10. A machine tool, characterized by The application further relates to a rotating shaft mechanism comprising any one of the rotating shaft mechanisms according to claims 1 to 9.

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