Vertical lathe workbench structure driven by split permanent magnet motor

Abstract

The utility model discloses a split permanent magnet motor driven vertical lathe workbench structure which comprises a workbench, a runner plate, a thrust bearing bush, a bearing, a positioning shaft, a bearing outer buckle, a supporting base, an air outlet hole, an air inlet hole, a movable sealing piece and a rotor. A motor winding is fixed to the periphery of the supporting base and comprises a stator piece and a coil, a thrust bearing bush is arranged at the top end of the supporting base and makes sliding contact with a runner plate below the workbench, a positioning shaft is arranged in the center of the lower surface of the workbench, a bearing is arranged in the center of the supporting base, and the positioning shaft is inserted into the bearing. A bearing outer buckle is arranged below the bearing; the structure is simple in design, the workbench operates stably, corresponding motor windings can be selected for driving different loads for driving, adjustment is convenient, the electricity-saving effect is obvious, the heat dissipation effect is good, and safe and stable operation of the driving structure is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical lathe driving, in particular to a vertical lathe workbench structure driven by a split-petal permanent magnet motor. Background Art

[0002] In recent years, wind power generation has been developed as a new energy source all over the world. my country has also proposed a plan to vigorously develop wind power generation. The scale of wind power investment in my country is also on an upward trend year by year, and the demand for wind power flanges required for tower production has increased sharply. Wind power flanges have a large diameter of about 1.6 to 5 meters and a thickness of about 100 to 250 mm; therefore, vertical lathes are usually used to process wind power flanges.

[0003] At present, vertical lathes with a length of more than 4 meters on the market generally place the reduction box and motor under the workbench. This method has the following disadvantages: 1. The transmission of multi-stage gears causes greater mechanical vibration and mechanical wear, consumes energy, and causes greater noise; 2. Gears, bearings and gear-shifting mechanism parts are frequently replaced and have high maintenance costs; 3. The speed cannot be adjusted arbitrarily during operation to meet various actual operating conditions, and the operating performance cannot meet the increasingly high automation requirements of modern mechanical processing; 4. The noise of gear meshing, speed change and leakage of lubricating oil are also not conducive to environmental protection. Under the same load, the required main force is large, which increases the bearing capacity of the gear, resulting in the gear being very easy to damage. The traditional speed change structure is complex, large in size, and has low transmission efficiency, which is the deficiency of the existing technology.

[0004] Chinese patent application No. 201921721318.3 discloses a vertical lathe workbench structure driven by a permanent magnet motor, in which a permanent magnet electronic stator is directly fixed on a base, and a rotor connecting sleeve is used as a rotor to drive the workbench to rotate, thereby realizing direct drive of the permanent magnet motor. Although the reduction mechanism of an ordinary vertical lathe is omitted and the transmission is improved, the spindle is fixed, the positioning effect is poor, the workbench is unstable, and the heat dissipation effect is poor. Since the power cannot be adjusted, the power saving effect is not obvious; Chinese patent application No. 202322654493.8 discloses a vertical lathe workbench structure driven by a new type of permanent magnet motor, which removes the original reduction mechanism, changes the driving mode, improves the transmission efficiency, and is easier to transform the existing vertical lathe. The processing volume of the workbench-related components is small, which reduces the difficulty of transformation. However, there are also problems such as poor heat dissipation, inability to adjust the power, and unclear power saving effect. Therefore, there is an urgent need for improved technologies on the market to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a split-petal permanent magnet motor driven vertical lathe workbench structure. The structure is simple in design and the workbench runs smoothly. The corresponding motor winding drive can be selected for driving different loads. The adjustment is convenient and the power saving effect is obvious. The heat dissipation effect is good, which ensures the safe and stable operation of the drive structure and can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a split permanent magnet motor driven vertical lathe workbench structure, comprising a workbench, a mirror plate, a thrust bearing, a bearing, a positioning shaft, a bearing buckle, a support base, an air outlet, an air inlet, a movable seal and a rotor. The lower end of the workbench circumference is connected to the rotor by bolts, and a permanent magnet is inlaid around the inner wall of the rotor barrel. The outer circumference of the support base is fixed with a motor winding, and the motor winding includes a stator sheet and a coil. A thrust bearing is arranged at the top of the support base, and the thrust bearing is in sliding contact with the mirror plate under the workbench. A positioning shaft is arranged at the center of the lower surface of the workbench, and a bearing is arranged at the center of the support base. The positioning shaft is inserted into the bearing, and a bearing buckle is arranged below the bearing. The bearing buckle is connected to the support base by screws. The bottom end of the support base is provided with an air inlet and an air outlet, and the bottom end of the support base is provided with a threading hole.

[0007] Furthermore, a flange is welded on the upper end of the rotor, and the flange is screwed to the lower end of the workbench, and a plurality of internal threaded holes are arranged on the workbench.

[0008] Furthermore, three independent motor windings are arranged on the outer peripheral side of the support base, and the coils are arranged in the slots of the stator sheets. The tail of the coil of each motor winding is short-circuited, and the first A\B\C three-phase lead wires are led to the outside and connected to the power switch.

[0009] Furthermore, the thrust bearings are evenly arranged along the circumferential direction.

[0010] Furthermore, a movable seal is inlaid in the portion of the lower end of the rotor corresponding to the support base, the movable seal adopts a labyrinth seal structure, and a lifting ear is arranged at the bottom end of the support base.

[0011] Furthermore, a circle of silicon steel sheets is embedded in the inner circumference of the rotor, and the permanent magnets are embedded between the silicon steel sheets.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. This structure completely changes the traditional driving mode, and the structural design is simple, and the workbench runs smoothly. It can select the corresponding motor winding drive for driving different loads. It is easy to adjust and has obvious power saving effect, and the heat dissipation effect is good, ensuring the safe and stable operation of the driving structure.

[0014] 2. The thrust bearing makes the vertical lathe worktable have good shock absorption effect and good stability. The positioning of the positioning axis solves the accuracy of the radial displacement of the worktable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the rotor with flange structure of the utility model.

[0017] In the figure: 1 workbench, 2 mirror plate, 3 thrust bearing, 4 bearing, 5 positioning shaft, 6 bearing buckle, 7 support base, 8 bolt, 9 stator plate, 10 coil, 11 air outlet, 12 air inlet, 13 lifting ear, 14 movable seal, 15 rotor, 16 permanent magnet, 17 flange, 18 internal threaded hole. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0019] See also Figure 1-2The utility model provides a technical solution: a split-petal permanent magnet motor driven vertical lathe workbench structure, comprising a workbench 1, a mirror plate 2, a thrust bearing 3, a bearing 4, a positioning shaft 5, a bearing buckle 6, a support base 7, an air outlet 11, an air inlet 12, a movable seal 14 and a rotor 15. The lower end of the circumference of the workbench 1 is connected to the rotor 15 by a bolt 8, and a permanent magnet 16 is inlaid around the inner wall of the barrel of the rotor 15. The outer periphery of the support base 7 is fixed with a motor winding, and the motor winding includes a stator sheet 9 and a coil 10. The top of the support base 7 is provided with a thrust bearing 3, and the thrust bearing 3 is in sliding contact with the mirror plate 2 under the workbench 1. Through the sliding support of the thrust bearing 3 and the mirror plate 2, the workbench 1 is reliably supported. Three groups of independent motor windings are arranged on the outer peripheral side of the support base 7. When the vertical lathe is working, one motor winding is powered first, that is, a small power supply can drive the vertical lathe to work; if the drive ratio For heavier work, the two motor windings work in parallel. When it is necessary to drive heavier work and greater power is needed, the three motor windings are combined and powered together; different powers are controlled by an external control switch to power the vertical lathe for different loads. The adjustment is convenient and the power saving effect is obvious. A positioning shaft 5 is set at the center of the lower surface of the workbench 1, and a bearing 4 is set at the center of the support base 7. The positioning shaft 5 is inserted into the bearing 4. A bearing buckle 6 is set below the bearing 4. The bearing buckle 6 is connected to the support base 7 by screws. The positioning of the positioning shaft 5 solves the accuracy of the radial displacement of the workbench 1. The bottom end of the support base 7 is provided with an air inlet 12 and an air outlet 11. The bottom end of the support base 7 is provided with a threading hole. The external fan absorbs clean air source and blows air into the vertical lathe shell through the air inlet 12 to complete the cooling of the coil 10, the stator sheet 9, and the permanent magnet 16, and then discharges it through the air outlet 11.

[0020] A flange 17 is welded to the upper end of the rotor 15, and the flange 17 is screwed to the lower end of the workbench 1. A plurality of internal threaded holes 18 are arranged on the workbench 1, and the internal threaded holes 18 facilitate the lifting of the workbench. The workbench 1 is lifted out to bring out the rotor 15, so as to facilitate the inspection and maintenance of the thrust bearing 3, the bearing 4, the coil 10, and the permanent magnet 16 on the rotor 15, and to facilitate the installation of temperature measuring wires, coil lead wires, and the installation of air inlet holes 12 and air inlet hole 12 pipelines.

[0021] Three independent motor windings are arranged on the outer side of the support base 7, and the coils 10 are arranged in the slots of the stator sheets 9. The tail of the coil 10 of each motor winding is short-circuited, and the first A\B\C three-phase lead wires are led to the outside and connected to the power switch.

[0022] The thrust bearings 3 are evenly arranged along the circumferential direction, and the thrust bearings 3 enable the vertical lathe worktable 1 to have good shock absorption effect and good stability effect.

[0023] The lower end of the rotor 15 and the portion corresponding to the support base 7 are inlaid with a movable seal 14, which adopts a labyrinth seal structure. The function of the movable seal 14 is to seal the influence of foreign dust on the internal permanent magnet 16 and the coil. The bottom end of the support base 7 is provided with a lifting ear 13.

[0024] The inner circumference of the rotor 15 is inlaid with a circle of silicon steel sheets, and the permanent magnets 16 are inlaid between the silicon steel sheets.

[0025] The positioning shaft 5 at the center of the lower end of the workbench 1 is supported by a bearing 4, and the thrust bearing 3 and the bearing 4 are uniformly oil-lubricated. A mirror plate 2 is screwed inside the lower end of the workbench 1, and the mirror plate 2 corresponds to the thrust bearing 3. The thrust bearing is used to bear the axial load when the workbench 1 is working, and ultimately this axial load is borne by the support base 7.

[0026] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which are all within the scope of the present invention to be protected.

Claims

1. A split-petal permanent magnet motor driven vertical lathe workbench structure, comprising a workbench (1), a mirror plate (2), a thrust bearing (3), a bearing (4), a positioning shaft (5), a bearing buckle (6), a support base (7), an air outlet (11), an air inlet (12), a movable seal (14) and a rotor (15), characterized in that: The lower end of the circumference of the workbench (1) is connected to the rotor (15) by bolts (8), the inner wall of the barrel of the rotor (15) is inlaid with a permanent magnet (16), the outer circumference of the support base (7) is fixed with a motor winding, the motor winding includes a stator plate (9) and a coil (10), the top of the support base (7) is provided with a thrust bearing (3), the thrust bearing (3) is in sliding contact with the mirror plate (2) below the workbench (1), a positioning shaft (5) is provided at the center of the lower surface of the workbench (1), a bearing (4) is provided at the center of the support base (7), the positioning shaft (5) is inserted into the bearing (4), a bearing buckle (6) is provided below the bearing (4), the bearing buckle (6) is connected to the support base (7) by screws, the bottom end of the support base (7) is provided with an air inlet (12) and an air outlet (11), and the bottom end of the support base (7) is provided with a threading hole.

2. According to claim 1, a split-petal permanent magnet motor driven vertical lathe worktable structure is characterized by: A flange (17) is welded to the upper end of the rotor (15), and the flange (17) is screwed to the lower end of the workbench (1). A plurality of internal threaded holes (18) are provided on the workbench (1).

3. According to claim 1, a split-petal permanent magnet motor driven vertical lathe worktable structure is characterized by: Three independent motor windings are arranged on the outer peripheral side of the support base (7), and the coils (10) are arranged in the slots of the stator sheets (9). The tail of the coil (10) of each motor winding is short-circuited, and the head A\B\C three-phase lead wires are led to the outside and connected to the power switch.

4. According to claim 1, a split-petal permanent magnet motor driven vertical lathe worktable structure is characterized by: The thrust bearings (3) are evenly arranged along the circumferential direction.

5. The split-petal permanent magnet motor driven vertical lathe worktable structure according to claim 1 is characterized in that: A movable seal (14) is inlaid in the portion of the lower end of the rotor (15) corresponding to the support base (7). The movable seal (14) adopts a labyrinth seal structure. A lifting ear (13) is provided at the bottom end of the support base (7).

6. The split-petal permanent magnet motor driven vertical lathe worktable structure according to claim 1, characterized in that: The inner circumference of the rotor (15) is inlaid with a circle of silicon steel sheets, and the permanent magnets (16) are inlaid between the silicon steel sheets.

Images