Spindle cooling device

Abstract

This utility model discloses a spindle cooling device, including a spindle sleeve, a spindle mounted in the middle of the spindle sleeve, bearings mounted at both ends of the spindle sleeve, the bearings mounted on the outside of the spindle, and two fixing sleeves symmetrically mounted on the outside of the spindle sleeve, the two fixing sleeves circularly wrapping around the outside of the spindle sleeve and fixedly connected by bolts. The inner wall of the fixing sleeve has a cavity filled with coolant. The coolant is continuously delivered by a pump. The coolant absorbs the heat generated by the rotation of the spindle from the bottom of the cavity between the two fixing sleeves from top to bottom, improving the heat absorption efficiency of the coolant and thus improving the cooling effect on the spindle. A fan blows the coolant inside the connecting pipe to dissipate heat. At the same time, the middle of the connecting pipe is set to bend, which can be used to improve the rapid dissipation of heat from the coolant inside the connecting pipe by the fan.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, specifically to a spindle cooling device. Background Technology

[0002] A CNC machine tool spindle is the shaft on a machine tool that drives the workpiece or tool to rotate. Bearings are fitted on the outside of the spindle. During the spindle rotation, the high-speed rotation of the spindle bearings generates heat, causing the lubricating oil to heat up. If the heat cannot be dissipated, the bearings are easily damaged, directly affecting the service life of the equipment.

[0003] The "CNC planar drill with spindle cooling device" with authorization announcement number "CN103862078B" includes a motor, an upper bearing cover, a drilling power head housing, a lower bearing cover spindle, and a drilling tool connected in sequence from top to bottom. A left cooling water tank and a right cooling water tank that are connected to each other are installed on both sides of the upper bearing cover.

[0004] In the aforementioned prior art, the left and right cooling water tanks are simply bolted to the sides of the flat drill, which cannot cool the entire bearing area. At the same time, the coolant groove is just an empty cavity, and the coolant flows relatively dispersed after entering the coolant groove, making it impossible to cool the entire bearing area sequentially. In addition, during the cooling process, some coolant in some spaces will flow out before absorbing heat, resulting in a low cooling effect. Utility Model Content

[0005] The purpose of this invention is to provide a spindle cooling device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a spindle cooling device, including a spindle sleeve, a spindle mounted in the middle of the spindle sleeve, bearings mounted at both ends of the spindle sleeve, the bearings mounted on the outer side of the spindle, two fixing sleeves symmetrically mounted on the outer side of the spindle sleeve, the two fixing sleeves circularly wrapping around the outer side of the spindle sleeve, the two fixing sleeves being fixedly connected by bolts, a cavity being formed in the inner wall of the fixing sleeve, the cavity being filled with coolant, a connecting pipe being installed between the top and bottom of the fixing sleeve, a fan for cooling the connecting pipe being installed in the middle of the outer side of the fixing sleeve, the middle of the connecting pipe being tortuous.

[0007] As a further preferred embodiment of this technical solution, sealing gaskets are installed on the inner walls of both ends of the fixing sleeve and at the contact points of the two fixing sleeves.

[0008] As a further preferred embodiment of this technical solution, a threaded block is fixedly installed between the inner walls of the two fixed sleeves.

[0009] As a further preferred embodiment of this technical solution, a mounting bracket is fixedly installed on the outer center of one of the fixed sleeves, and a fan is fixedly installed in the center of the mounting bracket.

[0010] As a further preferred embodiment of this technical solution, a fixing frame is fixedly installed on the outer center of the fixing sleeve with the mounting bracket, and heat sinks are fixedly installed at equal intervals on one side of the fixing frame.

[0011] As a further preferred embodiment of this technical solution, a pump body is fixedly installed at the bottom of the mounting bracket.

[0012] As a further preferred embodiment of this technical solution, the fixing frame has through holes spaced at equal intervals in the middle.

[0013] This utility model provides a spindle cooling device, which has the following beneficial effects:

[0014] (1) This utility model continuously delivers coolant through a pump body. The coolant absorbs the heat generated by the rotation of the spindle from the bottom of the inner end between the two fixed sleeves from top to bottom in the cavity space between the threaded blocks, thereby improving the heat absorption efficiency of the coolant and thus improving the cooling effect on the spindle.

[0015] (2) This utility model uses a fan to blow the coolant inside the connecting pipe to dissipate heat, and the middle part of the connecting pipe is set to bend, which can be used to improve the rapid dissipation of heat from the coolant inside the connecting pipe by the fan. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial cross-sectional exploded view of the present invention;

[0018] Figure 3 This is a partial cross-sectional view of the present invention.

[0019] In the diagram: 1. Spindle sleeve; 2. Spindle; 3. Bearing; 4. Fixing sleeve; 5. Cavity; 6. Connecting pipe; 7. Fan; 8. Sealing gasket; 9. Threaded block; 10. Mounting bracket; 11. Fixing bracket; 12. Heat sink; 13. Pump body; 14. Perforation. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model provides a technical solution: such as Figures 1 to 3As shown, in this embodiment, the spindle cooling device includes a spindle sleeve 1, a spindle 2 installed in the middle of the spindle sleeve 1, bearings 3 installed at both ends of the spindle sleeve 1, the bearings 3 installed on the outside of the spindle 2, and fixing sleeves 4 symmetrically installed on the outside of the spindle sleeve 1. The two fixing sleeves 4 are circularly wrapped around the outside of the spindle sleeve 1 and are fixedly connected by bolts. The inner wall of the fixing sleeve 4 has a cavity 5, which is filled with coolant. A connecting pipe 6 is installed between the top and bottom of the fixing sleeve 4. A fan 7 for cooling the connecting pipe 6 is installed in the middle of the outer side of the fixing sleeve 4. The middle of the connecting pipe 6 is tortuous. Setting the middle of the connecting pipe 6 to be tortuous can improve the rapid dissipation of heat from the coolant inside the connecting pipe 6 by the fan 7.

[0022] like Figures 1 to 3 As shown, sealing gaskets 8 are installed on the inner walls of both ends of the fixing sleeve 4 and at the contact points of the two fixing sleeves 4.

[0023] Ensure a seal between the fixed sleeve 4 and the spindle sleeve 1

[0024] like Figures 1 to 3 As shown, a threaded block 9 is fixedly installed between the inner walls of the two fixed sleeves 4.

[0025] The coolant can be gradually transported upwards through the space between the threaded blocks 9, and the heat can be absorbed step by step.

[0026] like Figures 1 to 3 As shown, a mounting bracket 10 is fixedly installed on the outer middle part of one of the fixed sleeves 4, and a fan 7 is fixedly installed on the middle part of the mounting bracket 10.

[0027] Used to correspond to the fan 7 relative to the tortuous connecting pipe 6.

[0028] like Figures 1 to 3 As shown, a fixing bracket 11 is fixedly installed on the outer middle part of the fixing sleeve 4 on which the mounting bracket 10 is installed, and heat sinks 12 are fixedly installed at equal intervals on one side of the fixing bracket 11.

[0029] When dissipating heat from the coolant, the heat dissipation fins 12 can quickly absorb the heat emitted from the connecting pipe 6, thereby improving the heat dissipation effect.

[0030] like Figures 1 to 3 As shown, the pump body 13 is fixedly installed at the bottom of the fixing frame 11.

[0031] Used for transporting coolant.

[0032] like Figures 1 to 3 As shown, the fixing frame 11 has through holes 14 at equal intervals in the middle.

[0033] The heat emitted from the connecting pipe 6 can be quickly dissipated.

[0034] This utility model provides a spindle cooling device, the specific working principle of which is as follows:

[0035] When the device is in use, the pump body 13 continuously delivers coolant. The coolant absorbs the heat generated by the rotation of the spindle 2 from the bottom of the inner end between the two fixed sleeves 4 and the cavity 5 between the threaded blocks 9. When the coolant passes through the fan 7, the fan 7 blows the coolant inside the connecting pipe 6 to dissipate heat.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spindle cooling device, comprising a spindle sleeve (1), a spindle (2) is installed in the middle of the spindle sleeve (1), bearings (3) are installed at both ends of the spindle sleeve (1), the bearings (3) are installed on the outside of the spindle (2), characterized in that: The main shaft sleeve (1) is symmetrically equipped with fixing sleeves (4) on its outer side. The two fixing sleeves (4) are circularly wrapped around the outer side of the main shaft sleeve (1). The two fixing sleeves (4) are fixedly connected by bolts. The inner wall of the fixing sleeve (4) is provided with a cavity (5). The cavity (5) is filled with coolant. A connecting pipe (6) is installed between the top and bottom of the fixing sleeve (4). A fan (7) for cooling the connecting pipe (6) is installed in the middle of the outer side of the fixing sleeve (4). The middle part of the connecting pipe (6) is tortuous.

2. The spindle cooling device according to claim 1, characterized in that: Sealing gaskets (8) are installed on the inner walls of both ends of the fixing sleeve (4) and at the contact position of the two fixing sleeves (4).

3. The spindle cooling device according to claim 2, characterized in that: A threaded block (9) is fixedly installed between the inner walls of the two fixed sleeves (4).

4. The spindle cooling device according to claim 3, characterized in that: A mounting bracket (10) is fixedly installed on the outer middle part of one of the fixed sleeves (4), and a fan (7) is fixedly installed on the middle part of the mounting bracket (10).

5. The spindle cooling device according to claim 4, characterized in that: A fixing bracket (11) is fixedly installed on the outer middle part of the fixing sleeve (4) on which the mounting bracket (10) is installed, and a heat sink (12) is fixedly installed at equal intervals on one side of the fixing bracket (11).

6. The spindle cooling device according to claim 5, characterized in that: The pump body (13) is fixedly installed at the bottom of the fixed frame (11).

7. The spindle cooling device according to claim 6, characterized in that: The fixing frame (11) has through holes (14) at equal intervals in the middle.

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