Spindle cooling structure

Abstract

The utility model belongs to the technical field of main shafts, and particularly discloses a main shaft cooling structure which comprises a bearing seat, a main shaft body and a sealing shell, the main shaft body is arranged on the inner side of the bearing seat, the sealing shell is arranged on the outer side of the bearing seat, and a cooling water channel is formed in the outer side wall of the bearing seat. The cooling water channel comprises a first water channel face, a second water channel face and a third water channel face, the first water channel face and the third water channel face are located on the two sides of the cooling water channel, the third water channel face is located at the bottom of the cooling water channel, and the first water channel face and the second water channel face are parallel to each other. A plurality of heat dissipation fins are arranged on the side wall of the sealing shell, and heat absorption pieces are arranged on the inner side wall of the sealing shell and located on the inner side of the cooling water channel; cooling liquid is injected into the cooling water channel, so that the cooling liquid flows in the cooling water channel, high temperature of the bearing seat is driven, and finally cooling liquid with heat is discharged from the water outlet, so that cooling is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of main shafts, in particular to a main shaft cooling structure. Background Art

[0002] The spindle refers to the axis on the machine tool that drives the workpiece or tool to rotate. It is usually composed of the spindle, bearings and transmission parts (gears or pulleys). In the machine, it is mainly used to support transmission parts such as gears and pulleys to transmit motion and torque.

[0003] The spindle generates heat when working. If the heat cannot be discharged in time, it will directly affect normal use. Therefore, some people will think of setting a sleeve on the outside of the spindle and setting a baffle on the inside of the sleeve, and use the baffle to guide the water flow for cooling. For example, the Chinese utility model patent with announcement number CN218225800U specifically discloses a spindle cooling device.

[0004] However, during actual use of the above-mentioned main shaft, people will find that since the main shaft and the baffle are sealed by setting a sleeve, and the baffle and the sleeve are set separately, this leads to poor sealing effect between the baffle, the sleeve and the main shaft, which is easy to cause cooling water leakage and its practicality is poor. Utility Model Content

[0005] The purpose of the utility model is to provide a spindle cooling structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spindle cooling structure, comprising a bearing seat, a spindle body and a sealed shell, wherein the spindle body is arranged on the inner side of the bearing seat, the sealed shell is arranged on the outer side of the bearing seat, a cooling water channel is opened on the outer side wall of the bearing seat, the cooling water channel comprises a first water channel surface, a second water channel surface and a third water channel surface, the first water channel surface and the third water channel surface are located on both sides of the cooling water channel, the third water channel surface is located at the bottom of the cooling water channel, the first water channel surface and the second water channel surface are parallel to each other, a water injection port and a drain port which are interconnected with the cooling water channel are arranged on the sealed shell, a plurality of heat dissipation fins are arranged on the side wall of the sealed shell, a heat absorbing sheet is arranged on the inner side wall of the sealed shell, and the heat absorbing sheet is located on the inner side of the cooling water channel; before use, the water injection port and the drain port need to be connected to external equipment respectively, and by injecting coolant into the cooling water channel, the coolant flows in the cooling water channel, driving the high temperature of the bearing seat, and finally the cooling with heat is discharged from the drain port, thereby achieving cooling.

[0007] Preferably, the cooling water channel is spirally arranged on the bearing seat to extend the cooling distance and improve the cooling efficiency.

[0008] Preferably, the cross section of the cooling water channel is in the shape of a U.

[0009] Preferably, the cross section of the heat absorbing sheet is trapezoidal, and the heat absorbing sheet is spirally disposed on the inner wall of the sealed shell, and the spiral pitch of the heat absorbing sheet is the same as the spiral pitch of the cooling water channel.

[0010] Preferably, the heat dissipation fins are arranged in a circular shape on the sealed housing.

[0011] Preferably, the sealing shell is welded to the bearing seat.

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

[0013] The utility model opens a spiral cooling water channel on the bearing seat and injects coolant into the cooling water channel, so that the coolant takes away heat to achieve a cooling effect. The heat dissipation effect is further improved by heat absorption sheets and heat dissipation fins. The spiral cooling water channel can extend the cooling distance and improve the cooling efficiency. The overall sealing effect is good, which effectively improves the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the sealing housing structure of the utility model;

[0017] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0018] In the figure: 1. bearing seat; 101. cooling water channel; 1011. first water channel surface; 1012. second water channel surface; 1013. third water channel surface; 2. main shaft body; 3. sealing shell; 301. water inlet; 302. drain outlet; 303. heat dissipation fins; 304. heat absorption sheet. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1-4 The utility model provides a technical solution: a spindle cooling structure, including a bearing seat 1, a spindle body 2 and a sealing shell 3, the spindle body 2 is arranged on the inner side of the bearing seat 1, the sealing shell 3 is arranged on the outer side of the bearing seat 1, a cooling water channel 101 is opened on the outer side wall of the bearing seat 1, the cooling water channel 101 includes a first water channel surface 1011, a second water channel surface 1012 and a third water channel surface 1013, the first water channel surface 1011 and the third water channel surface 1013 are located on both sides of the cooling water channel 101, the third water channel surface 1013 is located at the bottom of the cooling water channel 101, the first water channel surface 1011 and the second water channel surface 1012 are located on the bottom of the cooling water channel 101, and the first water channel surface 1011 and the second water channel surface 1012 are located on the bottom of the cooling water channel 101. 12 are parallel to each other, a water inlet 301 and a drain outlet 302 which are interconnected with the cooling water channel 101 are provided on the sealed shell 3, and a plurality of heat dissipation fins 303 are provided on the side wall of the sealed shell 3, and a heat absorbing sheet 304 is provided on the inner wall of the sealed shell 3, and the heat absorbing sheet 304 is located on the inner side of the cooling water channel 101; before use, the water inlet 301 and the drain outlet 302 need to be connected to external equipment respectively, and coolant is injected into the cooling water channel 101 so that the coolant flows in the cooling water channel 101, driving the high temperature of the bearing seat 1, and finally the cooling liquid with heat is discharged from the drain outlet 302, so as to achieve cooling.

[0023] Furthermore, the cooling water channel 101 is spirally disposed on the bearing seat 1, thereby extending the cooling distance and improving the cooling efficiency.

[0024] Furthermore, the cross section of the cooling water channel 101 is in the shape of a U.

[0025] Furthermore, the cross section of the heat absorbing sheet 304 is trapezoidal, and the heat absorbing sheet 304 is spirally disposed on the inner wall of the sealed shell 3 , and the spiral pitch of the heat absorbing sheet 304 is the same as the spiral pitch of the cooling water channel 101 .

[0026] Furthermore, the heat dissipation fins 303 are arranged in a ring-shaped array on the sealed housing 3 .

[0027] Furthermore, the sealing shell 3 is welded on the bearing seat 1 .

[0028] To sum up, when in use, since the spindle body 2 generates heat during operation and transfers it to the bearing seat 1, it is only necessary to inject coolant into the water inlet 301 so that the coolant enters the cooling water channel 101, thereby using the coolant to take away the high temperature of the bearing seat 1, and finally the coolant with high temperature is discharged from the drain port 302. During the process, the heat absorption plate 304 and the sealing shell 3 can absorb the temperature of the coolant at the same time, and dissipate the heat through the heat dissipation fins 303 and the sealing shell, thereby further improving the sealing effect. By setting the cooling water channel 101 in a spiral shape, the cooling distance can be extended and the cooling efficiency can be improved.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spindle cooling structure, characterized in that: It includes a bearing housing (1), a main shaft body (2) and a sealing housing (3). The main shaft body (2) is arranged inside the bearing housing (1), and the sealing housing (3) is arranged outside the bearing housing (1). A cooling water channel (101) is formed on the outer side wall of the bearing housing (1). The cooling water channel (101) includes a first water channel surface (1011), a second water channel surface (1012) and a third water channel surface (1013). The first water channel surface (1011) and the third water channel surface (1013) are located on both sides of the cooling water channel (101), and the third water channel surface (1013) is located at the bottom of the cooling water channel (101). The first water channel surface (1011) and the second water channel surface (1012) are parallel to each other. An injection port (301) and a drain port (302) that communicate with the cooling water channel (101) are arranged on the sealing housing (3). And a plurality of heat dissipation fins (303) are arranged on the side wall of the sealing housing (3). A heat absorption fin (304) is arranged on the inner side wall of the sealing housing (3), and the heat absorption fin (304) is located inside the cooling water channel (101).

2. A spindle cooling structure according to claim 1, characterized in that: The cooling water channel (101) is spirally arranged around the bearing housing (1).

3. A spindle cooling structure according to claim 1, characterized in that: The cross-section of the cooling water channel (101) is U-shaped.

4. A spindle cooling structure according to claim 1, characterized in that: The cross-section of the heat absorption fin (304) is trapezoidal, and the heat absorption fin (304) is spirally arranged on the inner side wall of the sealing housing (3).

5. The spindle cooling structure according to claim 1, characterized in that: The heat dissipation fins (303) are arranged in an annular and integral array on the sealing housing (3).

6. The spindle cooling structure according to claim 1, characterized in that: The sealing housing (3) is welded to the bearing housing (1).

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