Dynamic and static pressure main shaft structure with cooling system

Abstract

The utility model discloses a dynamic and static pressure main shaft structure with a cooling system, which comprises a dynamic and static pressure main shaft and an inner ring, the inner ring is sleeved at one end of the dynamic and static pressure main shaft, an outer ring is sleeved outside the inner ring, a ventilation channel is formed between the outer ring and the inner ring, and a plurality of fan blades are installed on the outer ring surface of the inner ring in an annular structure. A connecting piece is installed between the inner ring and the dynamic and static pressure main shaft, a bearing is installed at the position, behind the multiple fan blades, of the outer portion of the inner ring, and multiple fixing plates are installed between the outer ring of the bearing and the outer ring. The inner ring is simple in structure, the inner ring can be connected with the dynamic and static pressure main shaft through the connecting piece, the fan blades can be driven through rotation of the dynamic and static pressure main shaft, wind can be generated through the rotating fan blades, parts on the outer side can be cooled, heat conducted to the dynamic and static pressure main shaft is reduced, the inner ring can be switched between the use state and the non-use state through the connecting piece, and the service life of the dynamic and static pressure main shaft is prolonged. The device does not need to be used under the condition that the temperature is not high, and normal use is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrostatic and hydrodynamic spindles, and particularly relates to a hydrostatic and hydrodynamic spindle structure with a cooling system. Background Art

[0002] The hydrostatic and hydrodynamic spindle is a type of machine tool spindle. It is a wear-free spindle supported by hydrostatic and hydrodynamic oil films, which combines the advantages of hydrodynamic and hydrostatic spindles and avoids their disadvantages. It will have broad application prospects in various high-precision CNC machine tools, with a wide range of applications: applicable to fields such as high precision, heavy load, and wide grinding wheels.

[0003] At present, the hydrostatic and hydrodynamic spindle will generate heat due to factors such as high-speed rotation and friction. If timely and effective cooling is not carried out, it may lead to too high spindle temperature, thus affecting its accuracy, rigidity, and service life. Especially after installing other components such as synchronous pulleys, when heat is generated by the friction between the synchronous pulley and the synchronous belt, this heat may be transferred to the hydrostatic and hydrodynamic spindle through conduction, convection, or radiation. Especially when the synchronous pulley is directly installed on the hydrostatic and hydrodynamic spindle, the heat transfer efficiency will be higher. The excessive temperature of the hydrostatic and hydrodynamic spindle can cause the viscosity of the lubricating oil inside the spindle to decrease, affecting its lubrication effect, increasing wear and friction, and further exacerbating the temperature rise. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a hydrostatic and hydrodynamic spindle structure with a cooling system, which can reduce the heat conducted from external components to the hydrostatic and hydrodynamic spindle and can perform cooling switching to solve the problems mentioned in the above background art.

[0005] The utility model is realized through the following technical solutions: A hydrostatic and hydrodynamic spindle structure with a cooling system includes a hydrostatic and hydrodynamic spindle and an inner ring. The inner ring is sleeved on one end of the hydrostatic and hydrodynamic spindle. An outer ring is sleeved outside the inner ring, and a ventilation channel is formed between the outer ring and the inner ring. A plurality of fan blades are annularly installed on the outer circumferential surface of the inner ring. A connecting member is installed between the inner ring and the hydrostatic and hydrodynamic spindle. A bearing is installed behind the plurality of fan blades on the outside of the inner ring, and a plurality of fixing plates are installed between the outer ring of the bearing and the outer ring.

[0006] As a preferred technical solution, the connecting member includes an L-shaped plate. One end of the L-shaped plate is arranged on the outer circumferential surface of the inner ring, and the other end extends to the front of the connection flange of the hydrostatic and hydrodynamic spindle. A positioning portion protrudes from the inner side surface of the L-shaped plate at the position corresponding to the fixing hole of the connection flange, and the positioning portion is inserted into the positioning hole.

[0007] As a preferred technical solution, the connecting member further includes a stud and a nut. An adjustment opening is provided at one end of the L-shaped plate located outside the inner ring. One end of the stud passes through the adjustment opening and is installed on the outer circumferential surface of the inner ring. The nut is threadedly connected to the stud, and one end surface of the nut abuts against the L-shaped plate.

[0008] As a preferred technical solution, one end of the outer ring facing the fixing plate is enlarged outward, and a plurality of air inlets are provided at one end of the outer ring facing the fixing plate.

[0009] As a preferred technical solution, straight notch openings are provided on the fixing plates.

[0010] As a preferred technical solution, the inner ring and the connecting flange of the hydrostatic and hydrodynamic spindle are not in contact with each other.

[0011] As a preferred technical solution, both the inner ring and the outer ring are made of stainless steel material.

[0012] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple. A fan blade is provided at one end of the hydrostatic and hydrodynamic spindle. After the components connected thereto generate high temperature, the inner ring can be connected to the hydrostatic and hydrodynamic spindle through the connecting member. The rotation of the hydrostatic and hydrodynamic spindle can drive the fan blade, and the rotating fan blade can generate wind and dissipate heat from the outer components, reducing the heat conducted to the hydrostatic and hydrodynamic spindle. Moreover, the inner ring can be switched between being used and not being used through the connecting member, and there is no need to use it when the temperature is not high, thus avoiding affecting normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a rear view of the present utility model;

[0016] Figure 3 It is a top view of the present utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the L-shaped plate in the present utility model.

[0018] Among them, 1. Hydrostatic and hydrodynamic spindle; 2. Inner ring; 3. Fan blade; 4. Outer ring; 5. L-shaped plate; 6. Adjustment opening; 7. Nut; 8. Stud; 9. Bearing; 10. Fixing plate; 11. Positioning portion. Detailed implementation manners

[0019] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0020] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0021] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless specifically stated, can be replaced by other equivalent or features with similar purposes. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0022] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, a structure of a hydrostatic and hydrodynamic spindle with a cooling system according to the present utility model includes a hydrostatic and hydrodynamic spindle 1 and an inner ring 2. The inner ring 2 is sleeved on one end of the hydrostatic and hydrodynamic spindle 1. An outer ring 4 is sleeved outside the inner ring 2. A ventilation channel is formed between the outer ring 4 and the inner ring 2. A plurality of fan blades 3 are annularly installed on the outer circumferential surface of the inner ring 2. A connecting member is installed between the inner ring 2 and the hydrostatic and hydrodynamic spindle 1. A bearing 9 is installed behind the plurality of fan blades 3 outside the inner ring 2. A plurality of fixing plates 10 are installed between the outer ring of the bearing 9 and the outer ring 4.

[0023] In this embodiment, the connecting member includes an L-shaped plate 5. One end of the L-shaped plate 5 is arranged on the outer circumferential surface of the inner ring 2, and the other end extends to the front of the connecting flange of the hydrostatic and hydrodynamic spindle 1. A positioning portion 11 protrudes from the inner side surface of the L-shaped plate 5 at the position corresponding to the fixing hole of the connecting flange. The positioning portion 11 is inserted into the positioning hole.

[0024] In this embodiment, the connecting member further includes a stud 8 and a nut 7. An adjusting opening 6 is provided at one end of the L-shaped plate 5 located outside the inner ring 2. One end of the stud 8 passes through the adjusting opening 6 and is installed on the outer circumferential surface of the inner ring 2. The nut 7 is threadedly connected to the stud 8, and one end surface of the nut 7 abuts against the L-shaped plate 5.

[0025] In this embodiment, one end of the outer ring 4 facing the fixing plate 10 is expanded outward, and a plurality of air inlets are provided at one end of the outer ring 4 facing the fixing plate 10, so that wind energy can enter the interior of the ventilation channel along the air inlets to form convection.

[0026] In this embodiment, straight notches are provided on the fixing plate 10, and bolts can pass through the straight notches to fix the device on the spindle box, so that the weight of the device will not act on the hydrostatic and hydrodynamic spindle.

[0027] In this embodiment, the inner ring 2 is arranged without contact with the connecting flange of the hydrostatic and hydrodynamic spindle 1, so that the hydrostatic and hydrodynamic spindle will not rub against the inner ring during rotation, avoiding power consumption increase.

[0028] In this embodiment, both the inner ring 2 and the outer ring 4 are made of stainless steel materials to increase firmness.

[0029] Once a component connected to the hydrostatic and hydrodynamic spindle becomes hot, the nut can be loosened. At this time, the L-shaped plate can move along the stud towards the hydrostatic and hydrodynamic spindle until the positioning portion on the L-shaped plate is inserted into the fixing hole of the connecting flange, and the L-shaped plate is locked and fixed to the inner ring again through the nut. Among them, multiple connectors can be provided to increase the connection firmness with the hydrostatic and hydrodynamic spindle. After insertion, the rotation of the hydrostatic and hydrodynamic spindle can drive the L-shaped plate and the inner ring, and the rotation of the inner ring drives the fan blades. The rotating fan blades can generate wind, and the wind can blow along the ventilation duct onto the outer components, dissipating heat from the external components and reducing the heat conducted to the hydrostatic and hydrodynamic spindle by the components.

[0030] Conversely, when not in use, the nut can be loosened again so that the positioning portion on the L-shaped plate can be removed from the fixing hole. At this time, the hydrostatic and hydrodynamic spindle can only rotate on its own, avoiding driving the rotation of the inner ring, reducing power consumption, and not affecting the normal use of the hydrostatic and hydrodynamic spindle.

[0031] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope defined by the claims.

Claims

1. A structure of a hydrostatic and hydrodynamic spindle with a cooling system, characterized in that: It includes a hydrostatic and hydrodynamic spindle (1) and an inner ring (2). The inner ring (2) is sleeved on one end of the hydrostatic and hydrodynamic spindle (1). An outer ring (4) is sleeved outside the inner ring (2). A ventilation channel is formed between the outer ring (4) and the inner ring (2). A plurality of fan blades (3) are annularly installed on the outer circumferential surface of the inner ring (2). A connecting member is installed between the inner ring (2) and the hydrostatic and hydrodynamic spindle (1). A bearing (9) is installed behind the plurality of fan blades (3) on the outside of the inner ring (2). A plurality of fixing plates (10) are installed between the outer ring of the bearing (9) and the outer ring (4).

2. The structure of the hydrostatic and hydrodynamic spindle with a cooling system according to claim 1, characterized in that: The connecting member includes an L-shaped plate (5). One end of the L-shaped plate (5) is arranged on the outer circumferential surface of the inner ring (2), and the other end extends to the front of the connecting flange of the hydrostatic and hydrodynamic spindle (1). A positioning portion (11) protrudes from the inner side surface of the L-shaped plate (5) at the position corresponding to the fixing hole of the connecting flange. The positioning portion (11) is inserted into the positioning hole.

3. The structure of the hydrostatic and hydrodynamic spindle with a cooling system according to claim 2, characterized in that: The connecting member further includes a stud (8) and a nut (7). An adjusting opening (6) is provided at one end of the L-shaped plate (5) located outside the inner ring (2). One end of the stud (8) passes through the adjusting opening (6) and is installed on the outer circumferential surface of the inner ring (2). The nut (7) is threadedly connected to the stud (8), and one end surface of the nut (7) abuts against the L-shaped plate (5).

4. The structure of the hybrid hydrostatic and hydrodynamic spindle with a cooling system according to claim 1, characterized in that: One end of the outer ring (4) facing the fixing plate (10) is enlarged outward, and a plurality of air inlets are provided at one end of the outer ring (4) facing the fixing plate (10).

5. The structure of a hydrostatic and hydrodynamic spindle with a cooling system according to claim 1, characterized in that: Straight notch openings are provided on the fixing plates (10).

6. The structure of the hydrostatic and hydrodynamic spindle with a cooling system according to claim 1, characterized in that: There is no contact between the inner ring (2) and the connecting flange of the hydrostatic and hydrodynamic spindle (1).

7. The structure of the hydrostatic and hydrodynamic spindle with a cooling system according to claim 1, characterized in that: Both the inner ring (2) and the outer ring (4) are made of stainless steel material.

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