CN210587194U - Main shaft structure capable of adjusting dynamic balance - Google Patents
Main shaft structure capable of adjusting dynamic balance Download PDFInfo
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- CN210587194U CN210587194U CN201921537931.XU CN201921537931U CN210587194U CN 210587194 U CN210587194 U CN 210587194U CN 201921537931 U CN201921537931 U CN 201921537931U CN 210587194 U CN210587194 U CN 210587194U
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- main shaft
- adjusting nut
- dynamic balance
- bearing seat
- sleeved
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Abstract
The utility model relates to a main shaft structure capable of adjusting dynamic balance, which comprises a main shaft with a rotor, a motor stator arranged on the main shaft, a shell sleeved on the peripheral side of the motor stator, and a front bearing seat sleeved on the main shaft, wherein the front bearing seat is fixedly connected with the shell; the end part of the main shaft is sleeved with a front adjusting nut, a front end cover is sleeved outside the front adjusting nut and fixedly connected with a front bearing seat, a rear adjusting nut is further arranged at the other end of the main shaft, opposite to the front adjusting nut, and balance weight screws are arranged on the front adjusting nut and the rear adjusting nut. The utility model discloses set up preceding adjusting nut and back adjusting nut, according to the unbalanced angle of measuring when the balanced machine circular telegram, the quantity of the counter weight screw that the adjustment set up, the difference of material reach adjustment main shaft complete machine dynamic balance, this device simple structure, the operation is convenient to the noise when the counter weight screw can repeat repetitious usage, the cost is reduced has reduced the main shaft operation.
Description
Technical Field
The utility model relates to a main shaft field, concretely relates to adjustable dynamic balance's main shaft structure.
Background
The main shaft is a new technology which integrates the main shaft of the machine tool and a main shaft motor into a whole in the field of numerical control machine tools, and the main shaft, a linear motor technology and a high-speed cutter technology are combined to push high-speed processing to a new era. The dynamic balance is a key ring in the manufacture of the main shaft, the quality of the dynamic balance directly influences the precision of the main shaft and the service life of a bearing, the unbalance can not only cause the vibration of the whole main shaft, generate noise and increase energy consumption, but also accelerate the abrasion of the bearing, cause the high-frequency fatigue damage of a rotor component, support a machine base and the forced vibration damage of certain components, reduce the service life of a rotating machine, the factors such as manufacturing, installation process, environmental conditions and the like can cause the unbalanced vibration of a rotor system, the phenomenon of overlarge vibration and even incapability of working frequently occurs in the long-term operation process, and huge economic loss and safety accidents are caused. The dynamic balance of the existing main shaft is mainly ensured by a material increasing or reducing mode in the manufacturing process and the assembling process of parts, but the dynamic balance adjustment cannot be carried out in the mode after leaving a factory, and only the whole main shaft needs to be replaced; some manufacturers adopt dynamic balancing devices with automatic adjustment functions, but such dynamic balancing devices have high cost, complex structure and low cost performance.
Disclosure of Invention
In order to solve the problem, the utility model provides an adjustable dynamic balance's main shaft structure.
The utility model discloses a following scheme realizes:
a main shaft structure capable of adjusting dynamic balance comprises a main shaft with a rotor, a motor stator arranged on the main shaft, a shell sleeved on the peripheral side of the motor stator, and a front bearing seat sleeved on the main shaft, wherein the front bearing seat is fixedly connected with the shell; the end part of the main shaft is sleeved with a front adjusting nut used for adjusting the dynamic balance of the device, a front end cover is sleeved outside the front adjusting nut and fixedly connected with a front bearing seat, a rear adjusting nut is further arranged at the other end of the main shaft, opposite to the front adjusting nut, and balance weight screws are arranged on the front adjusting nut and the rear adjusting nut.
Furthermore, be provided with a plurality of first counterweight holes that are used for installing the counter weight screw on preceding adjusting nut's the outer terminal surface, back adjusting nut on be provided with a plurality of second counterweight holes, first counterweight hole before the center pin of adjusting nut be the benchmark and be circular array distribution, second counterweight hole after the center pin of adjusting nut be the benchmark and be circular array distribution.
Furthermore, countersunk holes for mounting screws or bolts are arranged at the joint of the front end cover and the front bearing seat and the joint of the front bearing seat and the shell.
Furthermore, a flange is arranged at one end of the shell, which is connected with the front bearing seat, and a mounting hole for mounting a bolt or a screw is arranged on the flange.
Furthermore, a plurality of first bearings are arranged between the main shaft and the front bearing seat.
Furthermore, one end of the main shaft, which is close to the rear adjusting nut, is also provided with at least one second bearing, a step part is arranged on the inner wall of the shell, which is close to the second bearing, and a spring is arranged between the end surface of the step part and the second bearing.
Furthermore, the other end of the main shaft opposite to the front end cover is provided with a pull rod for pushing and pulling the main shaft.
Contrast prior art, the utility model discloses following beneficial effect has:
the utility model is provided with the front adjusting nut and the rear adjusting nut, and the difference of the quantity and the material of the set counterweight screws is adjusted according to the unbalance angle measured when the balancing machine is electrified, so as to adjust the dynamic balance of the whole main shaft; meanwhile, parts do not need to be ground, the rotor mechanism of the main shaft is not damaged, the service life of the main shaft is prolonged, and noise is greatly reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of a main shaft structure with adjustable dynamic balance provided by the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a schematic structural view of the adjusting nut of the present invention.
Fig. 4 is a schematic structural view of the middle and rear adjusting nuts of the present invention.
Fig. 5 is a schematic structural view of the middle counterweight screw of the present invention.
Detailed Description
To facilitate understanding of the present invention for those skilled in the art, the present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
Referring to fig. 1 to 5, the present invention provides a main shaft structure capable of adjusting dynamic balance, including a main shaft 1 with a rotor, a motor stator 3 disposed on the main shaft 1, a housing 4 sleeved on the outer peripheral side of the motor stator 3, and a front bearing seat 5 sleeved on the main shaft, wherein the front bearing seat 5 is fixedly connected with the housing 4; the end part of the main shaft 1 is sleeved with a front adjusting nut 7 for adjusting the dynamic balance of the device, the front adjusting nut 7 is sleeved with a front end cover 6, the front end cover 6 is fixedly connected with a front bearing seat 5, the other end of the main shaft 1, which is opposite to the front adjusting nut 7, is also provided with a rear adjusting nut 8, and the front adjusting nut 7 and the rear adjusting nut 8 are both provided with counterweight screws 10; the outer end face of preceding adjusting nut 7 on be provided with a plurality of first counterweight port 71 that are used for installing counter weight screw 10, back adjusting nut 8 on be provided with a plurality of second counterweight port 81, first counterweight port 71 before the center axis of adjusting nut 7 be the benchmark and be circular array distribution, second counterweight port 81 after the center axis of adjusting nut 8 be the benchmark and be circular array distribution. In specific implementation, different materials, such as steel, aluminum or plastic, can be selected for the counterweight screws according to the unbalance measured by the balancing machine; and the number of the counterweight screws of the corresponding adjusting nuts can be reduced or increased according to the unbalance angle measured by the balancing machine.
A plurality of first bearings 11 are also arranged between the main shaft 1 and the front bearing block 5. One end of the main shaft close to the rear adjusting nut is also provided with at least one second bearing 12, the shell 4 is provided with a step part 15 close to the inner wall of the second bearing 12, and a spring 13 is arranged between the end surface of the step part 15 and the second bearing 12. The other end of the main shaft 1 opposite to the front end cover 6 is provided with a pull rod 14 for pushing and pulling the main shaft 1.
In particular, the counterweight screws may be made of various materials, such as steel, aluminum, or plastic. When the balance adjusting device works, the main shaft is firstly placed on the balance machine to be electrified and operated, tools (such as an inner hexagonal wrench) are used for increasing or reducing the number of the balance weight screws on the corresponding adjusting nuts according to the unbalance angle measured by the balance machine, and the balance weight screws made of corresponding materials are selected according to the unbalance amount measured by the balance machine, so that the aim of adjusting the dynamic balance of the whole main shaft is fulfilled.
The utility model is provided with the front adjusting nut and the rear adjusting nut, and the difference of the quantity and the material of the set counterweight screws is adjusted according to the unbalance angle measured when the balancing machine is electrified, so as to adjust the dynamic balance of the whole main shaft; meanwhile, parts do not need to be ground, the rotor mechanism of the main shaft is not damaged, the service life of the main shaft is prolonged, and noise is greatly reduced.
In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, "plurality" or "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the scope of the included claims.
Claims (7)
1. A main shaft structure capable of adjusting dynamic balance is characterized by comprising a main shaft (1) with a rotor, a motor stator (3) arranged on the main shaft (1), a shell (4) sleeved on the outer peripheral side of the motor stator (3) and a front bearing seat (5) sleeved on the main shaft, wherein the front bearing seat (5) is fixedly connected with the shell (4); the end part of the main shaft (1) is sleeved with a front adjusting nut (7) used for adjusting the dynamic balance of the device, the front end cover (6) is sleeved outside the front adjusting nut (7), the front end cover (6) is fixedly connected with a front bearing seat (5), the other end of the main shaft (1) opposite to the front adjusting nut (7) is further provided with a rear adjusting nut (8), and the front adjusting nut (7) and the rear adjusting nut (8) are both provided with a balance weight screw (10).
2. The main shaft structure with adjustable dynamic balance of claim 1, characterized in that the front adjusting nut (7) is provided with a plurality of first weight ports (71) on the outer end surface for installing weight screws (10), the rear adjusting nut (8) is provided with a plurality of second weight ports (81), the first weight ports (71) are distributed in a circular array based on the central axis of the front adjusting nut (7), and the second weight ports (81) are distributed in a circular array based on the central axis of the rear adjusting nut (8).
3. The main shaft structure with adjustable dynamic balance of claim 1, wherein the connecting part of the front end cover (6) and the front bearing seat (5) and the connecting part of the front bearing seat (5) and the housing (4) are provided with countersunk holes (9) for mounting screws or bolts.
4. A main shaft structure with adjustable dynamic balance as claimed in claim 1, wherein a flange (41) is provided at one end of the housing (4) connected to the front bearing seat (5), and a mounting hole (42) for mounting a bolt or a screw is provided on the flange (41).
5. A main shaft structure with adjustable dynamic balance as claimed in claim 1, characterized in that a plurality of first bearings (11) are further provided between the main shaft (1) and the front bearing seat (5).
6. The main shaft structure with the adjustable dynamic balance is characterized in that one end of the main shaft close to the rear adjusting nut is further provided with at least one second bearing (12), the shell (4) is provided with a step part (15) close to the inner wall of the second bearing (12), and a spring (13) is arranged between the end surface of the step part (15) and the second bearing (12).
7. A main shaft structure capable of adjusting dynamic balance according to claim 1, characterized in that the other end of the main shaft (1) opposite to the front end cover (6) is provided with a pull rod (14) for pushing and pulling the main shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921537931.XU CN210587194U (en) | 2019-09-17 | 2019-09-17 | Main shaft structure capable of adjusting dynamic balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921537931.XU CN210587194U (en) | 2019-09-17 | 2019-09-17 | Main shaft structure capable of adjusting dynamic balance |
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| Publication Number | Publication Date |
|---|---|
| CN210587194U true CN210587194U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921537931.XU Active CN210587194U (en) | 2019-09-17 | 2019-09-17 | Main shaft structure capable of adjusting dynamic balance |
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| CN (1) | CN210587194U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091712A (en) * | 2020-09-14 | 2020-12-18 | 深圳大学 | Dynamic balance adjusting device of machine tool and machine tool |
| CN112893889A (en) * | 2021-02-04 | 2021-06-04 | 广州市昊志机电股份有限公司 | Main shaft and machine tool |
| CN115121387A (en) * | 2021-03-26 | 2022-09-30 | 本田技研工业株式会社 | Rotary atomizing type coating device and method for adjusting rotary balance |
-
2019
- 2019-09-17 CN CN201921537931.XU patent/CN210587194U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091712A (en) * | 2020-09-14 | 2020-12-18 | 深圳大学 | Dynamic balance adjusting device of machine tool and machine tool |
| CN112091712B (en) * | 2020-09-14 | 2022-08-09 | 深圳大学 | Dynamic balance adjusting device of machine tool and machine tool |
| CN112893889A (en) * | 2021-02-04 | 2021-06-04 | 广州市昊志机电股份有限公司 | Main shaft and machine tool |
| CN115121387A (en) * | 2021-03-26 | 2022-09-30 | 本田技研工业株式会社 | Rotary atomizing type coating device and method for adjusting rotary balance |
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