Electric spindle protection structure

By designing components such as heat dissipation grooves, dustproof nets, fan blades, heat-conducting threaded rings and oil pumps on the electric spindle, the heat dissipation and lubrication problems of the electric spindle are solved, efficient ventilation, dustproofing and lubrication of the spindle are achieved, and the reliability and safety of the electric spindle are improved.

CN223325470UActive Publication Date: 2025-09-12WUXI AINOTE PRECISION MASCH CO LTD
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Patent Information

Application Number
CN202422254389.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-13
Publication Date
2025-09-12
Estimated Expiration
2034-09-13

AI Technical Summary

Technical Problem

Existing electric spindles lack effective ventilation and heat dissipation protection structures during use, resulting in excessive temperatures that damage electronic components, and inconvenience in injecting lubricating oil, which increases the operating burden.

Method used

An electric spindle protection structure is designed, which includes a shell, a heat dissipation slot, a dustproof net, a fan blade, a thermal conductive threaded ring, an oil storage box and an oil pump. The heat dissipation, dust protection and lubrication of the spindle are achieved through the combination of ventilation and heat dissipation of the heat dissipation slot, protection of the dustproof net, cooling of the fan blade, heat dissipation protection of the thermal conductive threaded ring and lubricating oil of the oil pump.

Benefits of technology

It effectively prevents the spindle from overheating and damage, prevents dust from entering, simplifies the lubricating oil injection process, reduces operating difficulties, and improves the reliability and safety of the electric spindle.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of motorized spindle protection, and discloses a motorized spindle protection structure which comprises two shells, a spindle is rotationally installed in inner cavities of the two shells through bearings, a plurality of heat dissipation grooves are formed in the two sides of each shell in a penetrating mode, and a first connecting block and a second connecting block are fixedly installed on the two sides of each shell at equal intervals respectively. A first clamping groove and a second clamping groove are formed in the tops of the first connecting block and the second connecting block in a penetrating mode correspondingly. Ventilation, heat dissipation and cooling can be conducted on the main shaft through the multiple heat dissipation grooves when the main shaft is used, and meanwhile during ventilation and heat dissipation, external dust and impurities can be prevented from entering the shell through the multiple heat dissipation grooves to damage the main shaft through the two dustproof nets; and the two dustproof nets move upwards to be separated in the inner cavities of the corresponding two groups of first clamping grooves and second clamping grooves, so that ventilation and dustproof protection can be performed on the main shaft, and meanwhile, an operator can conveniently disassemble the dustproof nets to clean dust and impurities.
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Description

Technical Field

[0001] The utility model relates to the technical field of electric spindle protection, in particular to an electric spindle protection structure. Background Art

[0002] The electric spindle, a new technology emerging in the field of CNC machine tools, integrates the machine tool spindle and spindle motor. Together with linear motor technology and high-speed tooling, it is ushering in a new era of high-speed machining. An electric spindle comprises the spindle itself and its accessories, including the spindle, high-frequency inverter, oil mist lubricator, cooling system, built-in encoder, and tool changer. The motor's rotor directly serves as the machine tool's spindle, while the spindle unit's housing serves as the motor base. Together with other components, the motor and spindle are integrated.

[0003] However, most electric spindles are not equipped with a ventilation and heat dissipation protection structure when in use. At the same time, the electric spindle will generate heat when it is in operation, which may cause the internal electronic components to be damaged due to excessive temperature during actual use, and also increase the excessive load during use to a certain extent. Moreover, when the electric spindle needs to be injected with lubricating oil, the operator needs to use external tools to inject the lubricating oil, which is inconvenient for the operator to inject the lubricating oil internally during actual use, and increases the workload of the operator. For this reason, we propose an electric spindle protection structure. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the utility model provides an electric spindle protection structure to solve the above-mentioned problems.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric spindle protection structure, comprising two outer shells, the inner cavities of the two outer shells are rotatably mounted with spindles through bearings, a plurality of heat dissipation slots are provided on both sides of the outer shells, a first connecting block and a second connecting block are fixedly mounted at equal distances on both sides of the outer shells, a first card slot and a second card slot are respectively provided on the tops of the first connecting block and the second connecting block, the first card slot and the second card slot form a group and there are two groups in total, a dustproof net is provided in the inner cavity of each group of the first card slot and the second card slot, an oil storage box is provided on the top of the outer shell, and an oil filling groove is provided on the top of the oil storage box.

[0008] Preferably, a circular ring is mounted on the middle portion of the main shaft, and a plurality of fan blades are evenly spaced on the outer ring of the circular ring. The fan blades do not contact the inner wall of the outer shell and are spaced a certain distance apart from each other.

[0009] Preferably, the shell is made of steel.

[0010] Preferably, the two dustproof nets are movably installed on one side of the housing in the corresponding first slot and second slot respectively.

[0011] Preferably, the outer ring of the main shaft is sleeved with a heat-conducting threaded ring, the material of the heat-conducting threaded ring is copper, and the outer ring of the heat-conducting threaded ring is threadedly connected to a heat dissipation protective sleeve.

[0012] Preferably, an L-shaped oil extraction pipe is sleeved between the left side of the oil filling tank and the top of the shell, and an oil extraction pump is sleeved in the middle of the L-shaped oil extraction pipe.

[0013] Preferably, heating rods are fixedly installed around the inner wall of the oil storage box.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the present invention provides an electric spindle protection structure with the following beneficial effects:

[0016] 1. The electric spindle protection structure can ventilate and cool the spindle when in use through a plurality of heat dissipation slots. At the same time, during ventilation and heat dissipation, two dustproof nets can prevent external dust and impurities from entering the shell through the plurality of heat dissipation slots and causing damage to the spindle. The two dustproof nets are moved upward and separated in the corresponding two groups of first card slots and second card slot cavities, thereby providing ventilation and dustproof protection for the spindle and making it convenient for operators to disassemble the dustproof nets to clean dust and impurities.

[0017] 2. The electric spindle protection structure can drive the ring to rotate when the spindle is in use. The ring can drive multiple fan blades arranged on its outer ring to rotate synchronously when the ring rotates. The spindle itself can drive the fan blades to rotate to blow air and dissipate heat for cooling, thereby reducing the energy-consuming work of heat dissipation protection for the spindle, and can prevent the spindle from being overheated when in use and causing unnecessary damage to internal electronic components. When the multiple fan blades are not in contact with the inner wall of the outer shell and are separated by a certain distance, the rotation of the fan blades can be prevented. By rotating the heat dissipation protective sleeve counterclockwise on the heat-conducting threaded ring, the heat dissipation protective sleeve can cover and protect the spindle when it is not in use, and can prevent the spindle from being exposed to the outside when not in use and causing collisions, resulting in bending and breakage and unable to be used normally. In addition, setting the heat-conducting threaded ring to copper can quickly absorb and conduct the heat generated by the spindle during operation, and dissipate the heat through the heat dissipation protective sleeve.

[0018] 3. The electric spindle protection structure fills the oil reservoir with lubricating oil through the oil filling groove, and then uses the oil pump to pump the lubricating oil in the oil reservoir into the outer shell through the L-shaped oil extraction pipe to lubricate the spindle. The operator does not need to use external tools to fill the spindle with oil, thereby preventing the spindle from rusting or not working properly due to insufficient lubricating oil, thereby effectively protecting the spindle. At the same time, the four heating rods can heat the lubricating oil in the oil reservoir to prevent the lubricating oil from solidifying and becoming unable to function normally when stored in the oil reservoir without filling the spindle with oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the main shaft structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the dustproof net of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the heat-conducting threaded ring of the utility model;

[0023] Figure 5 This is a structural diagram of the oil storage box of the utility model.

[0024] In the figure: 1. Housing; 2. Main shaft; 3. Ring; 4. Fan blades; 5. Heat dissipation groove; 6. First connecting block; 7. Second connecting block; 8. First slot; 9. Second slot; 10. Dustproof net; 11. Thermal conductive threaded ring; 12. Heat dissipation protective cover; 13. Oil storage box; 14. Oil filling tank; 15. L-shaped oil extraction pipe; 16. Oil extraction pump; 17. Heating rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-5, a motorized spindle protection structure, comprising two shells 1, the inner cavities of the two shells 1 are rotatably mounted with spindles 2 through bearings, a plurality of heat dissipation slots 5 are penetrated on both sides of the shell 1, a first connecting block 6 and a second connecting block 7 are fixedly mounted at equal distances on both sides of the shell 1, a first card slot 8 and a second card slot 9 are penetrated on the top of the first connecting block 6 and the second connecting block 7, a first card slot 8 and a second card slot 9 are respectively penetrated on the top, a first card slot 8 and a second card slot 9 form a group and there are two groups in total, a dustproof net 10 is provided in the inner cavity of each group of the first card slot 8 and the second card slot 9, an oil storage box 13 is provided on the top of the shell 1, and an oil filling groove 14 is provided on the top of the oil storage box 13.

[0027] Furthermore, a ring 3 is provided in the middle of the main shaft 2, and a plurality of fan blades 4 are provided at equal distances on the outer ring of the ring 3. The fan blades 4 do not contact the inner wall of the outer shell 1 and are spaced a certain distance apart. Advantages: the main shaft 2 can drive the ring 3 to rotate when in use, and the ring 3 can drive the plurality of fan blades 4 provided on its outer ring to rotate synchronously when rotating. The main shaft 2 itself can be used to drive the fan blades 4 to rotate to blow air and dissipate heat for cooling, thereby reducing the energy-consuming work of heat dissipation protection of the main shaft 2, and preventing the main shaft 2 from being overheated during operation and causing unnecessary damage to the internal electronic components. When the plurality of fan blades 4 do not contact the inner wall of the outer shell 1 and are spaced a certain distance apart, the rotation of the fan blades 4 can be prevented from being hindered.

[0028] Furthermore, the material of the shell 1 is set to steel, which has the advantage that since steel itself has the excellent characteristic of being relatively hard, setting the material of the shell 1 to steel can increase the hardness of 1, and can effectively protect the main shaft 2, preventing the shell 1 from causing unnecessary damage to the main shaft 2 when it is hit by the outside world.

[0029] Furthermore, the two dustproof nets 10 are movably installed on one side of the shell 1 in the corresponding first card slot 8 and second card slot 9 respectively. The advantages are: the main shaft 2 can be ventilated, dissipated and cooled during use through the several heat dissipation slots 5. At the same time, during ventilation and heat dissipation, the two dustproof nets 10 can prevent external dust and impurities from passing through the several heat dissipation slots 5 into the shell 1 and causing damage to the main shaft 2, and the two dustproof nets 10 can be moved upward and separated in the corresponding two groups of first card slots 8 and second card slots 9 cavities, thereby not only providing ventilation and dustproof protection for the main shaft 2, but also making it convenient for the operator to disassemble the dustproof nets 10 to clean dust and impurities.

[0030] Furthermore, the outer ring of the main shaft 2 is sleeved with a heat-conducting threaded ring 11, and the material of the heat-conducting threaded ring 11 is copper. The outer ring of the heat-conducting threaded ring 11 is threadedly connected to a heat dissipation protective sleeve 12. Advantages: by rotating the heat-conducting protective sleeve 12 counterclockwise on the heat-conducting threaded ring 11, the heat-conducting protective sleeve 12 can cover and protect the main shaft 2 when the main shaft 2 is not in use, and can prevent the main shaft 2 from being exposed to the outside when not in use and causing collisions, resulting in bending and breaking and unable to be used normally. In addition, setting the heat-conducting threaded ring 11 to copper can quickly absorb and conduct the heat generated by the main shaft 2 during operation, and dissipate heat through the heat-conducting protective sleeve 12.

[0031] Furthermore, an L-shaped oil extraction pipe 15 is sleeved between the left side of the oil filling tank 14 and the top of the housing 1 , and an oil extraction pump 16 is sleeved in the middle of the L-shaped oil extraction pipe 15 .

[0032] Furthermore, heating rods 17 are fixedly installed around the inner wall of the oil storage box 13. The advantages are: lubricating oil is filled into the oil storage box 13 through the oil filling groove 14, and then the lubricating oil in the oil storage box 13 is pumped into the outer shell 1 through the L-shaped oil extraction pipe 15 by the oil pump 16 to lubricate the main shaft 2. The operator does not need to use external tools to fill the main shaft 2 with oil, thereby preventing the main shaft 2 from rusting or not being able to work normally due to insufficient lubricating oil, and thus effectively protecting the main shaft 2. At the same time, the lubricating oil in the oil storage box 13 can be heated by the four heating rods 17 to prevent the lubricating oil from solidifying and being unable to be used normally when stored in the oil storage box 13 without the need to fill the main shaft 2 with oil.

[0033] Working principle: When in use, first, the main shaft 2 can drive the ring 3 to rotate when it is in use. When the ring 3 rotates, it can drive the multiple fan blades 4 set on its outer ring to rotate synchronously. The main shaft 2 itself can drive the fan blades 4 to rotate to blow heat and cool down, thereby reducing the energy consumption of the heat dissipation protection of the main shaft 2, and preventing the main shaft 2 from being overheated during operation and causing unnecessary damage to the internal electronic components. In addition, when the multiple fan blades 4 are not in contact with the inner wall of the shell 1 and are separated by a certain distance, it can prevent the fan blades 4 from being obstructed. The spindle 2 is rotated, and the spindle 2 can be ventilated and cooled by a plurality of heat dissipation slots 5 when in use. At the same time, during ventilation and heat dissipation, two dust-proof nets 10 can be used to prevent external dust and impurities from entering the shell 1 through the plurality of heat dissipation slots 5 to cause damage to the spindle 2, and the two dust-proof nets 10 are moved upward to separate in the inner cavities of the two groups of first card slots 8 and second card slots 9, so that the spindle 2 can be ventilated and dust-proof protected while the operator can also conveniently disassemble the dust-proof nets 10 to clean dust and impurities. When the spindle 2 needs to be covered, The heat dissipation protective sleeve 12 can be rotated counterclockwise on the heat-conducting threaded ring 11. When the main shaft 2 is not in use, the heat dissipation protective sleeve 12 can cover and protect the main shaft 2, which can prevent the main shaft 2 from being exposed to the outside and causing collisions, resulting in bending and breaking and being unable to be used normally. In addition, the heat-conducting threaded ring 11 is made of copper material, which can quickly absorb and conduct the heat generated by the main shaft 2 during operation, and dissipate heat through the heat dissipation protective sleeve 12. When lubricating oil needs to be injected into the main shaft 2, lubricating oil can be added to the oil storage box 13 through the oil filling groove 14, and then the main shaft 2 can be cooled. The lubricating oil in the oil storage box 13 is pumped into the outer casing 1 through the oil pump 16 through the L-shaped oil suction pipe 15 to lubricate the main shaft 2. The operator does not need to use external tools to fill the main shaft 2 with oil, thereby preventing the main shaft 2 from rusting or not being able to work normally due to insufficient lubricating oil, thereby effectively protecting the main shaft 2. At the same time, the lubricating oil in the oil storage box 13 can be heated by four heating rods 17 to prevent the lubricating oil from solidifying and being unable to be used normally when stored in the oil storage box 13 without the need to fill the main shaft 2 with oil.

[0034] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric spindle protection structure, comprising two housings (1), characterized in that: The inner cavities of the two shells (1) are rotatably mounted with a main shaft (2) through bearings. A plurality of heat dissipation slots (5) are provided on both sides of the shell (1). A first connecting block (6) and a second connecting block (7) are fixedly mounted at equal distances on both sides of the shell (1). A first card slot (8) and a second card slot (9) are provided on the tops of the first connecting block (6) and the second connecting block (7). The first card slot (8) and the second card slot (9) form a group and two groups are provided in total. The inner cavity of each group of the first card slot (8) and the second card slot (9) is provided with a dustproof net (10). An oil storage box (13) is provided on the top of the shell (1), and an oil filling slot (14) is provided on the top of the oil storage box (13).

2. The electric spindle protection structure according to claim 1, characterized in that: A circular ring (3) is sleeved on the middle of the main shaft (2), and a plurality of fan blades (4) are evenly spaced on the outer ring of the circular ring (3). The fan blades (4) do not contact the inner wall of the outer shell (1) and are spaced a certain distance apart from each other.

3. The electric spindle protection structure according to claim 1, characterized in that: The shell (1) is made of steel.

4. The electric spindle protection structure according to claim 1, characterized in that: The two dustproof nets (10) are movably mounted on one side of the housing (1) in the corresponding first card slot (8) and second card slot (9).

5. The electric spindle protection structure according to claim 1, characterized in that: The outer ring of the main shaft (2) is sleeved with a heat-conducting threaded ring (11), the material of the heat-conducting threaded ring (11) is copper, and the outer ring of the heat-conducting threaded ring (11) is threadedly connected to a heat dissipation protective sleeve (12).

6. The electric spindle protection structure according to claim 1, characterized in that: An L-shaped oil extraction pipe (15) is sleeved between the left side of the oil filling groove (14) and the top of the shell (1), and an oil extraction pump (16) is sleeved in the middle of the L-shaped oil extraction pipe (15).

7. The electric spindle protection structure according to claim 1, characterized in that: Heating rods (17) are fixedly mounted around the inner wall of the oil storage box (13).