High-efficiency motorized spindle cooling sleeve with combined inner and outer cooling flow channels

Abstract

The utility model relates to the technical field of motorized spindles, and discloses a high-efficiency motorized spindle cooling jacket with combined inner and outer cooling flow channels, which comprises a cooling jacket shell and a cooling jacket main body, the cooling jacket shell is provided with a main water inlet and a water inlet port, and the outer surface of the cooling jacket main body is provided with an outer flow channel arranged along the axial direction. The inner surface of the cooling sleeve main body is provided with inner flow channels arranged along the circumferential direction, and the inner flow channel and the outer flow channel of the cooling sleeve main body are communicated through a radial through hole; the flow channels are arranged on the inner surface and the outer surface of the motorized spindle cooling sleeve body in the two different directions, so that all parts of a motorized spindle are evenly cooled, the cooling area is greatly increased, the effective heat dissipation rate is high, and the cooling effect is good.

Description

Technical Field

[0001] The utility model relates to an electric spindle cooling technology, in particular to a high-efficiency electric spindle cooling sleeve with a combination of inner and outer cooling channels. Background Art

[0002] The electric spindle cooling sleeve is used to cool the electric spindle. In mechanical processing, the electric spindle usually generates a lot of heat due to long-term high-speed operation. In order to ensure the normal operation of the electric spindle and extend its service life, it needs to be effectively cooled.

[0003] Using the electric spindle cooling sleeve to effectively cool the electric spindle can extend the service life of the electric spindle. Excessive spindle temperature will cause thermal expansion and contraction effects, which will affect the machining accuracy of the machine tool. Cooling with the cooling sleeve can reduce thermal deformation, improve machining accuracy and surface quality, and also reduce downtime and maintenance time caused by overheating, improve production efficiency, reduce energy consumption, and reduce production costs.

[0004] The working mode of the electric spindle cooling jacket is to cool the electric spindle through circulating coolant. The coolant absorbs the heat of the electric spindle during the flow process. The main body of the electric spindle cooling jacket is designed with internal and external cooling flow channel structures. The coolant circulates in the cooling flow channel to cover the entire surface of the electric spindle, thereby cooling the electric spindle.

[0005] Most traditional cooling channels are spirally arranged, and most of them only have channels on the outer surface of the cooling jacket body. The cooling area is small and the cooling efficiency is low, which cannot effectively reduce the cooling temperature of the electric spindle. With the development of electric spindle technology and the increase in electric spindle speed and power, it is necessary to design an electric spindle cooling jacket with high cooling efficiency, good cooling effect and reasonable cooling channels. Utility Model Content

[0006] The utility model aims to provide a high-efficiency electric spindle cooling sleeve with internal and external cooling channels, mainly to solve the problems raised in the above-mentioned background technology, improve the cooling efficiency of the electric spindle, and enhance the cooling effect of the electric spindle.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: The utility model provides a high-efficiency electric spindle cooling jacket with a combination of internal and external cooling channels, including a cooling jacket shell and a cooling jacket body, wherein the outer surface of the cooling jacket body is provided with an external channel arranged along the axial direction, and the inner surface of the cooling jacket body is provided with an internal channel arranged along the circumferential direction.

[0008] The cooling jacket shell is provided with a total water inlet and a water inlet port.

[0009] The cooling flow channel on the outer surface of the cooling jacket body includes a plurality of parallel flow channels arranged in parallel along the axial direction, the cooling flow channel on the inner surface of the cooling jacket body includes a plurality of parallel flow channels arranged in parallel along the circumferential direction, a U-shaped flow channel is arranged between two adjacent parallel flow channels on the outer surface, and they are connected in sequence to form an external flow channel, and the cooling flow channel on the inner surface includes a plurality of rectangular parallel flow channels arranged in parallel along the circumferential direction, and two adjacent rectangular parallel flow channels are connected in sequence through a vertical flow channel to form an internal flow channel.

[0010] The cooling jacket body is provided with radial through holes, which are respectively a water inlet and a water outlet. The inner and outer cooling channels of the cooling jacket body are connected through the through hole water inlet and water outlet provided on the cooling jacket body to form a complete cooling channel.

[0011] The inner surface of the cooling jacket shell is bonded to the outer surface of the cooling jacket body by means of sealant, and the inner side of the cooling jacket body is installed on the outer side of the electric spindle stator by means of interference fit.

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

[0013] The utility model designs flow channels on the inner and outer surfaces of the main body of the electric spindle cooling sleeve along two different directions, so that each part of the electric spindle can be cooled evenly, thereby increasing the cooling effect on the electric spindle.

[0014] The utility model discloses a cooling sleeve for an electric spindle having two adjacent parallel channels on the outer surface of the cooling sleeve. The U-shaped channel connection is arranged between the two adjacent parallel channels. This channel arrangement allows the coolant outside the channel to flow smoothly, reduces the risk of blockage, and enhances the cooling effect.

[0015] The flow channel designed on the inner surface of the main body of the electric spindle cooling sleeve designed by the utility model is rectangular in shape. The rectangular flow channel has a larger geometric surface area than other flow channels and can provide more heat exchange surfaces, thereby improving the heat transfer efficiency. The rectangular flow channel can also better control the flow velocity of the fluid, help reduce the turbulence and resistance of the fluid, thereby achieving more uniform fluid flow.

[0016] The total water inlet and outlet of the electric spindle cooling jacket designed by the utility model are arranged on the same end face, which can reduce the length of the pipeline and the use of connecting parts, save materials and costs, and reduce the risks of water leakage and maintenance.

[0017] The utility model designs two radial through holes between the inner and outer cooling channels, so that the two inner and outer cooling channels are connected, which is convenient for water inlet and outlet and reduces the manufacturing cost.

[0018] In the cooling jacket body of the electric spindle designed by the utility model, the coolant enters from the water inlet flow channel and is divided at the radial through hole, one part continues to flow along the external flow channel of the cooling jacket body, and the other part enters the internal flow channel of the cooling jacket body through the radial through hole. After the coolant is cooled once in the internal flow channel, it enters the external flow channel through the water outlet and flows out from the main water outlet together with the coolant in the external flow channel, completing a complete cooling cycle. The arrangement of the cooling flow channel can make the temperature inside the electric spindle evenly distributed, with a high effective heat dissipation rate and a good cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the cooling jacket shell structure of the utility model.

[0020] Figure 2 for Figure 1 AA section view.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the cooling jacket main body of the utility model.

[0022] Figure 4 This is a schematic diagram of the main structure of the cooling jacket of the utility model.

[0023] Figure 5 for Figure 4 BB cross-sectional view.

[0024] Figure 6 for Figure 4 CC cross-sectional view.

[0025] Figure 7 This is a schematic diagram of the cooling jacket main body and cooling jacket shell structure of the utility model.

[0026] Figure 8 for Figure 7 DD cross-sectional view.

[0027] Markings in the figure: 1-main water inlet; 2-cooling jacket shell; 3-water inlet port; 4-cooling jacket body; 5-water outlet channel; 6-water inlet channel; 7-external channel; 8-water outlet; 9-water inlet; 10-internal channel; 11-main water outlet; 12-U-shaped channel. DETAILED DESCRIPTION

[0028] The specific technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0029] In an embodiment of the utility model, a high-efficiency electric spindle cooling jacket with an inner and outer cooling channel combination is disclosed, comprising a cooling jacket shell 2 and a cooling jacket body 4. The inner surface of the cooling jacket shell 2 and the outer surface of the cooling jacket body 4 are bonded by a sealant, and the cooling jacket body is installed on the outer side of the electric spindle stator by an interference fit.

[0030] like Figure 1 , 2 As shown, a main water inlet 1 and a water inlet port 3 are provided on the cooling jacket shell 2 .

[0031] like Figure 3 As shown, the outer surface of the cooling jacket body 4 is provided with a water inlet channel 6, a water outlet channel 5, and a plurality of external channels 7 arranged in parallel along the axial direction, and a U-shaped channel 12 is provided between two adjacent parallel channels for connection.

[0032] like Figure 5 , 6 As shown, the inner surface of the cooling jacket body 4 is provided with a plurality of internal flow channels 10 arranged in parallel along the circumferential direction, and a vertical flow channel is provided between two adjacent parallel flow channels for connection. The cooling jacket body 4 is provided with a water outlet 8 and a water inlet 9 to connect the external flow channel with the internal flow channel.

[0033] like Figure 7 As shown, a main water outlet 11 is provided at the top of the cooling jacket body 4 .

[0034] When the electric spindle cooling jacket of the utility model is working, the cooling jacket is first installed on the electric spindle, and then the coolant flows into the total water inlet 1 on the cooling jacket shell 2, and then the coolant flows into the water inlet port 3, and then the coolant flows into the cooling jacket body water inlet channel 6 to continue to flow. When the coolant contacts the water inlet 9 from the water inlet channel 6, the coolant will be divided at the water inlet 9, a part of which continues to flow along the cooling jacket body external flow channel 7, and the other part enters the cooling jacket body internal flow channel 10 through the water inlet 9. After the coolant is cooled once along the internal flow channel, it flows from the water outlet channel 5 to the total water outlet 11 through the water outlet 8 together with the coolant circulating in the external cooling cycle, completing a complete cooling cycle. The cooling channel arrangement makes the internal temperature distribution of the electric spindle uniform, the effective heat dissipation rate is high, and the cooling effect is good.

[0035] Compared with traditional cooling sleeves, the electric spindle cooling sleeve of the utility model can ensure that the coolant can flow through the electric spindle evenly by arranging cooling flow channels inside and outside, which can more effectively reduce the temperature of the electric spindle, improve working efficiency and life; and the arrangement of flow channels inside and outside can increase the contact area between the cooling medium and the electric spindle, improve heat transfer efficiency, speed up heat dissipation, and reduce the working temperature of the electric spindle.

Claims

1. A high-efficiency electric spindle cooling jacket with internal and external cooling channels, characterized in that: The invention comprises a cooling jacket shell (2) and a cooling jacket body (4); the outer surface of the cooling jacket body (4) is provided with an external flow channel (7) arranged along the axial direction; the inner surface of the cooling jacket body (4) is provided with an internal flow channel (10) arranged along the circumferential direction; the external flow channel (7) comprises a plurality of parallel flow channels arranged in parallel along the axial direction; the internal flow channel (10) comprises a plurality of rectangular parallel flow channels arranged in parallel along the circumferential direction; a U-shaped flow channel (12) is arranged between two adjacent parallel flow channels on the outer surface for connection; and two adjacent rectangular parallel flow channels of the internal flow channel (10) are connected in sequence through vertical flow channels to form a cooling flow channel.

2. The high-efficiency electric spindle cooling jacket with combined internal and external cooling channels according to claim 1, characterized in that: A total water inlet (1) and a water inlet port (3) are provided on the cooling jacket shell (2).

3. The high-efficiency electric spindle cooling jacket with combined internal and external cooling channels according to claim 1, characterized in that: The cooling jacket body (4) is provided with radial through holes, which are respectively a water inlet (9) and a water outlet (8); the inner and outer cooling channels of the cooling jacket body (4) are connected via the through hole water inlet (9) and the water outlet (8) provided on the cooling jacket body (4), thereby forming a complete cooling channel.

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