Main shaft drainage structure of horizontal machining center

Abstract

The utility model discloses a main shaft drainage structure of a horizontal machining center, which relates to the technical field of horizontal machining centers and comprises a central main shaft main body, a fixed shell arranged on the side surface of the central main shaft main body, outer rings of two groups of bearings fixedly connected to the inner side of the fixed shell, and an external thread ring plate fixedly connected to the outer side of the central main shaft main body, two groups of drainage holes penetrating to the outer side of the fixed shell are formed in the inner side of the fixed shell, a first water baffle and a second water baffle are fixedly connected to the inner side of the fixed shell, and a drainage plate sleeves the outer side of the central main shaft main body; the attached sliding plate is driven through synchronous rotation of the external thread ring plate and the center main shaft body, automatic drainage is achieved through the kinetic energy of the main shaft, driving structures such as a motor do not need to be added, and the automatic drainage device is more energy-saving, simple in structure and higher in maintenance efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to horizontal machining center technical field, concretely is a horizontal machining center main shaft drainage structure. BACKGROUND

[0002] Numerical control milling machine is a kind of automatic processing equipment developed on the basis of general milling machine, and the processing technology of the two is basically same, and the structure is also similar, numerical control milling machine is divided into two categories without tool magazine and with tool magazine, and the numerical control milling machine with tool magazine is also called machining center, and horizontal machining center is a kind of numerical control milling machine, people use horizontal machining center in the production of mechanical workpiece, the main shaft in horizontal machining center drives cutter to process workpiece, since the main shaft is in high-speed rotation state, thus a large amount of heat is generated, people will choose to spray cold water to the main shaft to achieve the purpose of cooling the main shaft, in the process of spraying cold water, a small amount of cold water can seep into the main shaft through the gap between the shell inside horizontal machining center and the main shaft, if not timely drain the cold water, the cold water in the main shaft will gradually increase, which will affect the use performance of the main shaft, and then affect the processing of mechanical workpiece by horizontal machining center, and the cold water entering the main shaft also dilutes the lubricant of bearing inside the main shaft, which affects the rotation of the bearing.

[0003] Through the search, the patent publication number CN221209899U discloses a horizontal machining center main shaft drainage structure, which comprises a main shaft body and a shell, the shell is arranged on the outer surface of the main shaft body, an annular cavity is formed in the shell, two mounting plates are fixedly connected in the annular cavity, reciprocating lead screws are rotatably connected to the sides of the two mounting plates, sleeves are slidably connected to the walls of the two reciprocating lead screws, two annular push plates are slidably arranged in the annular cavity, the sleeves are fixedly connected to the sides of the corresponding annular push plates, a plurality of through holes are formed in the annular cavity, and a driving mechanism is arranged between the two mounting plates, when the technical scheme is used, the two push plates are driven by the motor to discharge the air in the cavity from each through hole, so that air pressure is formed to prevent cold water from flowing between the shell and the main shaft body, the drainage structure needs to be additionally provided with a driving motor and a transmission mechanism, which not only increases the manufacturing cost of the equipment, but also has high maintenance cost due to the complex structure, therefore, the horizontal machining center main shaft drainage structure is provided to solve the above problems. SUMMARY

[0004] The utility model aims at: in order to solve the problem in the above background art, provide a kind of horizontal machining center main shaft drainage structure, structure is more simple, drainage reliability is higher, maintenance cost is lower, operation convenience is promoted, solve the problem in the above background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a horizontal machining center spindle drainage structure, comprising: a central spindle body; a fixed housing is provided on the side of the central spindle body; two sets of bearing outer rings are fixedly connected to the inner side of the fixed housing; an external threaded ring plate is fixedly connected to the outer side of the central spindle body; two sets of drainage holes penetrating to the outer side of the fixed housing are opened on the inner side of the fixed housing; a first baffle plate and a second baffle plate are fixedly connected to the inner side of the fixed housing; a drainage plate is sleeved on the outer side of the central spindle body; a first tension spring is fixedly connected between the second baffle plate and the drainage plate; a limiting through hole penetrating to the outer side of the fixed housing is opened on the inner side of the fixed housing; a fitting slide plate is provided on the inner side of the fixed housing; a connecting slide plate is provided above the fitting slide plate; two sets of connecting columns are fixedly connected above the connecting slide plate; a second tension spring is sleeved on the outer side of the connecting columns; and connecting handles are fixedly connected above the two sets of connecting columns.

[0006] As a further embodiment of this utility model: the side of the fixed housing is in close contact with the main body of the central spindle, the outer rings of both sets of bearings are fixedly connected to the inner side of the fixed housing, and the inner rings of both sets of bearings are fixedly connected to the outer side of the main body of the central spindle.

[0007] As a further embodiment of this utility model: the first water baffle, the second water baffle, and the drainage plate are all configured as rings, and the size of the openings on the inner sides of the first water baffle and the second water baffle is adapted to the size of the central main shaft body. The drainage plate is located in the middle of the two sets of drainage holes on the inner side of the fixed housing.

[0008] As a further improvement of this utility model: the lower part of the fitting slide plate is in close contact with the external thread ring plate, and the lower part of the fitting slide plate is provided with a thread that matches the external thread of the external thread ring plate.

[0009] As a further improvement of this utility model: a limiting groove is provided above the fitting slide plate, and a slider adapted to the limiting groove is provided below the connecting slide plate, so that the connecting slide plate can be stably slidably connected above the fitting slide plate.

[0010] As a further improvement of this utility model, the side of the fitting slide plate and the drainage plate are slidably connected in the vertical direction.

[0011] As a further improvement of this utility model, the connecting post is adapted to the limiting through hole.

[0012] As a further embodiment of this utility model: the two ends of the second tension spring are respectively fixedly connected to the lower part of the connecting handle and the upper part of the fixed housing. In the initial state, the second tension spring is in a slightly stretched state. When fully lifted upward, the second tension spring can still be fully stretched.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, the sliding plate is driven by the synchronous rotation of the external threaded ring plate and the central spindle body, and the spindle itself is used to achieve automatic drainage. There is no need to add a motor or other drive structure, which is more energy-efficient, simple in structure and more efficient in maintenance. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Fig. 2 This is a schematic diagram of the bearing structure in this utility model;

[0017] Fig. 3 This is a schematic diagram of the structure of the first and second water baffles in this utility model;

[0018] Fig. 4 This is a schematic diagram of the connecting column in this utility model.

[0019] In the diagram: 1. Main body of the central spindle; 2. Fixed housing; 3. Bearing; 4. External threaded ring plate; 5. Drain hole; 6. First baffle plate; 7. Second baffle plate; 8. Drain plate; 9. First tension spring; 10. Limiting through hole; 11. Fitting slide plate; 12. Connecting slide plate; 13. Connecting column; 14. Second tension spring; 15. Connecting handle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0022] Reference Figs. 1 to 4 In this embodiment of the utility model, a horizontal machining center spindle drainage structure includes: a central spindle body 1, a fixed housing 2 provided on the side of the central spindle body 1, two sets of bearings 3 with outer rings fixedly connected to the inner side of the fixed housing 2, the side of the fixed housing 2 being in close contact with the central spindle body 1, the outer rings of the two sets of bearings 3 being fixedly connected to the inner side of the fixed housing 2, and the inner rings of the two sets of bearings 3 being fixedly connected to the outer side of the central spindle body 1. Through the fixed connection of the inner and outer rings of the two sets of bearings 3 to the central spindle body 1 and the fixed housing 2 respectively, a stable rotational support structure is formed. When the central spindle body 1 rotates, the bearings 3 can effectively reduce friction and maintain the stationary state of the fixed housing 2, providing a stable mechanical foundation for subsequent drainage operations.

[0023] The outer side of the main spindle body 1 is fixedly connected with an external threaded ring plate 4. The inner side of the fixed housing 2 is provided with two sets of drainage holes 5 that penetrate to the outer side of the fixed housing 2. The inner side of the fixed housing 2 is fixedly connected with a first water baffle plate 6 and a second water baffle plate 7. The first water baffle plate 6 and the second water baffle plate 7 form a double water-blocking barrier. The external threaded ring plate 4 generates axial displacement driving force as the spindle rotates. The two sets of drainage holes 5 correspond to the water-proof chambers formed by the two water baffle plates. When the water reaches a specific position, it can be discharged through the drainage holes 5.

[0024] A drainage plate 8 is sleeved on the outer side of the main body 1 of the central spindle. The first baffle plate 6, the second baffle plate 7 and the drainage plate 8 are all set as annular. The size of the opening on the inner side of the first baffle plate 6 and the second baffle plate 7 is adapted to the size of the central spindle body 1. The drainage plate 8 is located in the middle of the two sets of drainage holes 5 inside the fixed housing 2. The drainage plate 8 is a dynamic sealing element. When the spindle rotates, it is linked with the external threaded ring plate 4 to generate axial displacement. Its position design makes the two sets of drainage holes 5 correspond to the two water accumulation chambers between the first baffle plate 6 and the drainage plate 8, and between the drainage plate 8 and the second baffle plate 7, respectively.

[0025] A first tension spring 9 is fixedly connected between the second baffle plate 7 and the drainage plate 8. A limiting through hole 10 extending through to the outside of the fixed housing 2 is provided on the inner side of the fixed housing 2. A fitting slide plate 11 is provided on the inner side of the fixed housing 2. The bottom of the fitting slide plate 11 is in close contact with the external threaded ring plate 4. A thread that matches the external thread of the external threaded ring plate 4 is provided on the bottom of the fitting slide plate 11. When the external threaded ring plate 4 rotates, it pushes the fitting slide plate 11 to move laterally through thread engagement. This transmission mechanism converts the rotational motion of the main shaft into the linear displacement of the drainage plate 8. The first tension spring 9 provides the restoring force of the drainage plate 8. When the external threaded ring plate 4 stops applying the pushing force, the fitting slide plate 11 only needs to be slightly lifted upward to release the abutment between the side of the external threaded ring plate 4 and the side of the drainage plate 8, and drive the drainage plate 8 back to the initial position. The limiting through hole 10 provides motion guidance for the connecting column 13 to ensure the stability of the axial movement of the drainage plate 8.

[0026] A connecting slide plate 12 is provided above the fitting slide plate 11. A horizontal limiting groove is provided above the fitting slide plate 11. A slider that matches the limiting groove is provided below the connecting slide plate 12, so that the connecting slide plate 12 can slide stably in the horizontal direction above the fitting slide plate 11. The side of the fitting slide plate 11 is slidably connected to the drainage plate 8 in the vertical direction. Two sets of connecting posts 13 are fixedly connected above the connecting slide plate 12. The connecting posts 13 are matched with the limiting through holes 10. The vertical sliding connection ensures that the drainage plate 8 only undergoes axial displacement. The connecting posts 13 form a precise guide through the limiting through holes 10, allowing them to slide only in the vertical direction.

[0027] A second tension spring 14 is sleeved on the outside of the connecting post 13. A connecting handle 15 is fixedly connected above the two sets of connecting posts 13. The two ends of the second tension spring 14 are fixedly connected to the lower part of the connecting handle 15 and the upper part of the fixed housing 2, respectively. In the initial state, the second tension spring 14 is in a slightly stretched state. When fully lifted upward, the second tension spring 14 can still be fully stretched. The second tension spring 14 provides an automatic reset function for the connecting handle 15. After drainage is completed, the connecting handle 15 is manually pulled so that the side of the external threaded ring plate 4 no longer abuts against the side of the contact plate 11. The contact plate 11 can then reset under the action of the first tension spring 9. The spring tension causes the connecting handle 15 to automatically return to its original position, maintaining the contact pressure between the contact plate 11 and the external threaded ring plate 4, ensuring the normal start of the subsequent automatic drainage function.

[0028] The working principle of this utility model is as follows: when the central spindle body 1 starts to rotate, the fixedly connected external threaded ring plate 4 rotates synchronously. At this time, the inner rings of the two sets of bearings 3 rotate with the spindle, while the outer rings remain stationary through the fixed housing 2, forming a stable rotational support structure;

[0029] The rotation of the external threaded ring plate 4 pushes the contact plate 11 to move laterally through thread engagement. The threaded design below it reduces frictional resistance. The lateral displacement of the contact plate 11 drives the drainage plate 8 to move axially. The drainage plate 8 and the inner side of the fixed housing 2 are dynamically non-contact sealed to reduce frictional resistance. The first tension spring 9 is continuously stretched. During the displacement of the drainage plate 8, the water accumulated between the first baffle plate 6 and the drainage plate 8 is squeezed and discharged through the corresponding drainage hole 5. The moving speed of the drainage plate 8 is determined by the spindle speed, which can form sufficient drainage pressure.

[0030] Once the spindle has rotated to the appropriate position, the external threaded ring plate 4 and the contact plate 11 are no longer in contact, and the side of the external threaded ring plate 4 abuts against the side of the contact plate 11. The rotation of the central spindle body 1 and the external threaded ring plate 4 no longer affects the contact plate 11. Subsequently, when water accumulates inside the spindle to a certain extent and affects the spindle rotation, requiring drainage again, under safe operating conditions when the spindle is rotating at low speed or stopped, the connecting handle 15 can be lifted. At this time, the connecting column 13 drives the connecting plate 12 and the contact plate 11 along the drainage plate 8. Moving upwards, under the action of the first tension spring 9, the contact plate 11 and the drainage plate 8 quickly return to their initial positions. At the same time, the water accumulated between the second baffle plate 7 and the drainage plate 8 is also discharged through another set of drainage holes 5. Then, simply loosen the connecting handle 15, and under the action of the second tension spring 14, the contact plate 11 can re-contact with the external threaded ring plate 4. When the central main shaft body 1 rotates, the next round of drainage is carried out. The whole process only requires instantaneous intervention, and the main shaft does not need to stop completely, still maintaining the kinetic energy drive advantage.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A drainage structure for a horizontal machining center spindle, characterized in that, include: A central spindle body (1) is provided with a fixed housing (2) on its side. The inner side of the fixed housing (2) is fixedly connected with the outer ring of two sets of bearings (3). The outer side of the central spindle body (1) is fixedly connected with an external threaded ring plate (4). The inner side of the fixed housing (2) is provided with two sets of drainage holes (5) that penetrate to the outer side of the fixed housing (2). The inner side of the fixed housing (2) is fixedly connected with a first baffle plate (6) and a second baffle plate (7). The outer side of the central spindle body (1) is fitted with a drainage plate (8). The second baffle plate... (7) and the drainage board (8) are fixedly connected by a first tension spring (9). The inner side of the fixed housing (2) is provided with a limiting through hole (10) that extends to the outer side of the fixed housing (2). The inner side of the fixed housing (2) is provided with a fitting slide plate (11). A connecting slide plate (12) is provided above the fitting slide plate (11). Two sets of connecting posts (13) are fixedly connected above the connecting slide plate (12). A second tension spring (14) is sleeved on the outer side of the connecting posts (13). A connecting handle (15) is fixedly connected above the two sets of connecting posts (13).

2. The horizontal machining center spindle drainage structure according to claim 1, characterized in that, The side of the fixed housing (2) is in close contact with the central spindle body (1), the outer rings of the two sets of bearings (3) are fixedly connected to the inner side of the fixed housing (2), and the inner rings of the two sets of bearings (3) are fixedly connected to the outer side of the central spindle body (1).

3. The horizontal machining center spindle drainage structure according to claim 1, characterized in that, The first baffle plate (6), the second baffle plate (7) and the drain plate (8) are all set as rings, and the size of the openings on the inner side of the first baffle plate (6) and the second baffle plate (7) is adapted to the central spindle body (1). The drain plate (8) is located in the middle of the two sets of drain holes (5) on the inner side of the fixed housing (2).

4. The horizontal machining center spindle drainage structure according to claim 1, characterized in that, The fitting slide plate (11) is in close contact with the external thread ring plate (4) below, and the fitting slide plate (11) is provided with a thread that matches the external thread of the external thread ring plate (4) below.

5. The horizontal machining center spindle drainage structure according to claim 1, characterized in that, A limiting groove is provided above the fitting slide plate (11), and a slider adapted to the limiting groove is provided below the connecting slide plate (12), so that the connecting slide plate (12) can be stably slidably connected above the fitting slide plate (11).

6. The horizontal machining center spindle drainage structure according to claim 1, characterized in that, The side of the fitting slide plate (11) is slidably connected to the drainage plate (8) in the vertical direction.

7. The horizontal machining center spindle drainage structure according to claim 1, characterized in that, The connecting post (13) is adapted to the limiting through hole (10).

8. The horizontal machining center spindle drainage structure according to claim 1, characterized in that, The two ends of the second tension spring (14) are fixedly connected to the lower part of the connecting handle (15) and the upper part of the fixed housing (2). In the initial state, the second tension spring (14) is in a slightly stretched state. When fully lifted upward, the second tension spring (14) can still be fully stretched.

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