Special thin-wall angular contact ball bearing for industrial robot

Abstract

The invention discloses a special thin-wall angular contact ball bearing for an industrial robot, and relates to the technical field of bearings, and the special thin-wall angular contact ball bearing comprises a bearing unit which comprises an outer ring, a rolling assembly arranged in the outer ring and an inner ring arranged at the bottom of the rolling assembly. When the bearing unit works and rotates, friction heat is generated between the outer ring and the interior due to rotation of the rolling assembly, the temperature rises, temperature airflow is disturbed through a rotating sleeve and a fan plate in the heat dissipation assembly, the heat is extruded to the position between a heat conduction sub-column and a sealing ring, then the heat is preliminarily guided out through a heat conduction ring for heat dissipation, and meanwhile the heat is absorbed and guided out through a heat conduction rod and the heat conduction ring; meanwhile, due to the labyrinth design of the dustproof assembly, dust is prevented from entering, temperature airflow is guided to be exhausted through the ventilation opening, heat dissipation is achieved, external cooling equipment is not needed, rotation of the bearing is not hindered, and the problems that the natural heat dissipation effect is poor, and a liquid cooling heat dissipation system is complex are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, and in particular to a thin-walled angular contact ball bearing specially used for industrial robots. Background Art

[0002] Thin-walled angular contact ball bearings for industrial robots bear large combined axial and radial loads as well as impact loads. Moreover, as industrial robots develop towards precision, high efficiency and compactness, thin-walled angular contact ball bearings for industrial robots must also be precise, high-speed, thin-walled and have a long service life.

[0003] The existing thin-walled angular contact ball bearings of industrial robots cannot solve the heat dissipation problem well when working at high intensity for a long time. At present, the natural heat dissipation effect is poor and the speed is slow, which can easily cause the bearings to break due to high temperature. Although liquid cooling has a better effect, it requires external equipment, and the internal pipeline installation hinders rotation. In addition, there are problems such as high cooling cost, complex system, low reliability, easy corrosion, leakage and blockage, environmental restrictions, and dust easily entering the interior, which affects the life and performance of the bearing and increases maintenance costs and failure risks. Summary of the invention

[0004] In view of the above-mentioned problems existing in the existing thin-wall angular contact ball bearings specially used for industrial robots, the present invention is proposed.

[0005] Therefore, the present invention provides a thin-walled angular contact ball bearing specially designed for industrial robots, the purpose of which is to solve the problems of poor natural heat dissipation effect, slow speed, easy bearing breakage due to high temperature, liquid cooling heat dissipation hindering rotation, high cooling cost, complex system, low reliability, easy corrosion, leakage and blockage, environmental restrictions, and dust easily entering the interior affecting the bearing life and performance, and increasing maintenance costs and failure risks.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a bearing unit comprises an outer ring, a rolling assembly arranged inside the outer ring, and an inner ring arranged at the bottom of the rolling assembly; The heat dissipation unit includes a heat dissipation component arranged on the rolling component and a ventilation and dustproof unit includes a sealing component arranged on the heat dissipation component and a dustproof component arranged on the sealing component, and the sealing component is connected to the inner ring.

[0007] As a preferred solution of the thin-walled angular contact ball bearing for industrial robots described in the present invention, the rolling assembly includes rolling balls rotatably arranged on the outer diameter, and rolling rings arranged on the outer diameter of the rolling balls, and the rolling rings are rotatably connected to the outer ring.

[0008] As a preferred solution of the thin-walled angular contact ball bearing for industrial robots described in the present invention, the heat dissipation component includes a heat-conducting rod arranged on the rolling ring, a rotating sleeve rotatably arranged on the heat-conducting rod, and a fan plate arranged on the outer diameter of the rotating sleeve, and the fan plate cooperates with the rolling ring.

[0009] As a preferred solution of the thin-walled angular contact ball bearing for industrial robots described in the present invention, a heat-conducting ring is arranged at one end of the heat-conducting rod, a heat-conducting column is arranged on the inner diameter of the heat-conducting ring, a heat-conducting ring is arranged at the bottom of the heat-conducting column, and the heat-conducting ring is rotatably connected to the inner ring.

[0010] As a preferred solution of the thin-walled angular contact ball bearing for industrial robots described in the present invention, the sealing assembly includes a sealing ring arranged on the outer diameter of the heat-conducting ring, a sealing gasket 1 arranged inside the sealing ring, and a sealing gasket 2 arranged inside the sealing ring, and the sealing gasket 2 cooperates with the heat-conducting ring.

[0011] As a preferred solution of the thin-wall angular contact ball bearing for industrial robots described in the present invention, a vent is provided inside the sealing ring, and the vent is connected to the dustproof component.

[0012] As a preferred solution of the thin-walled angular contact ball bearing for industrial robots described in the present invention, the dustproof component includes an isolation piece arranged at one end of the sealing ring, a blocking plate arranged inside the isolation piece, and an inner plate arranged inside the isolation piece.

[0013] As a preferred solution of the thin-walled angular contact ball bearing for industrial robots described in the present invention, a ventilation groove 1 is arranged inside the baffle plate, and the ventilation groove 1 cooperates with the ventilation port.

[0014] As a preferred solution of the thin-wall angular contact ball bearing for industrial robots described in the present invention, a second ventilation groove is provided at the bottom of the inner plate, and the second ventilation groove cooperates with the first ventilation groove.

[0015] As a preferred solution of the thin-walled angular contact ball bearing for industrial robots described in the present invention, ventilation groove 1 on the surface of the baffle plate inside the isolation member cooperates with ventilation groove 2 on the surface of the inner plate to discharge the airflow in an S shape.

[0016] The beneficial effects of the present invention are as follows: when the bearing unit is working and rotating, friction heat is generated between the outer ring and the inner part due to the rotation of the rolling component, resulting in a temperature rise. The rotating sleeve and the fan plate inside the heat dissipation component disrupt the temperature airflow, and the heat is squeezed between the heat conduction partition and the sealing ring, and then the heat conduction ring preliminarily conducts the heat. At the same time, the heat conduction rod and the heat conduction ring absorb and conduct the heat. At the same time, the maze design of the dustproof component not only prevents dust from entering, but also guides the temperature airflow to be discharged through the vents, so as to achieve heat dissipation without the need for external cooling equipment and without hindering the rotation of the bearing. The problems of poor natural heat dissipation effect and complex liquid cooling system are effectively solved, the service life and working performance of the bearing are improved, the maintenance cost and failure risk are reduced, and the service life of the thin-walled angular contact ball bearings specially used for industrial robots is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The figure is a schematic diagram of the overall structure of the thin-wall angular contact ball bearing specially used for industrial robots of the present invention.

[0019] Figure 2 The figure is a schematic diagram of the internal structure of the thin-wall angular contact ball bearing specially used for industrial robots of the present invention.

[0020] Figure 3 The thin-walled angular contact ball bearing specially used for industrial robots of the present invention Figure 2 An enlarged schematic diagram of point A.

[0021] Figure 4 The figure is a schematic cross-sectional structure diagram of a thin-wall angular contact ball bearing specially used for industrial robots of the present invention.

[0022] Figure 5 The thin-walled angular contact ball bearing specially used for industrial robots of the present invention Figure 4 An enlarged schematic diagram of point B.

[0023] Figure 6 The exploded structural diagram of the thin-walled angular contact ball bearing specially used for industrial robots of the present invention is shown in FIG.

[0024] Figure 7 The exploded cross-sectional structure diagram of the thin-wall angular contact ball bearing specially used for industrial robots of the present invention.

[0025] Figure 8 The thin-walled angular contact ball bearing specially used for industrial robots of the present invention Figure 7 Enlarged schematic diagram of point C.

[0026] Explanation of the reference numerals: 100, bearing unit; 101, outer ring; 102, rolling assembly; 1021, rolling ring; 1022, rolling ball; 103, inner ring; 200, heat dissipation unit; 201, heat dissipation assembly; 2011, heat-conducting rod; 2012, rotating sleeve; 2013, fan plate; 2014, heat-conducting ring; 2015, heat-conducting partition; 2016, heat-conducting ring; 300, ventilation and dust-proof unit; 301, sealing assembly; 3011, sealing ring; 3012, vent; 3013, sealing gasket one; 3014, sealing gasket two; 302, dust-proof assembly; 3021, insulation piece; 3022, barrier plate; 3023, ventilation slot one; 3024, inner plate; 3025, ventilation slot two. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] Example 1, reference Figure 1 - Figure 2 , which is the first embodiment of the present invention, provides a thin-walled angular contact ball bearing specially used for industrial robots. The device includes: a bearing unit 100, a heat dissipation unit 200, and a ventilation and dust prevention unit 300.

[0029] The bearing unit 100 includes an outer ring 101, a rolling assembly 102 disposed inside the outer ring 101, and an inner ring 103 disposed at the bottom of the rolling assembly 102; The heat dissipation unit 200 includes a heat dissipation component 201 arranged on the rolling component 102 and a ventilation and dustproof unit 300, including a sealing component 301 arranged on the heat dissipation component 201 and a dustproof component 302 arranged on the sealing component 301, and the sealing component 301 is connected to the inner ring 103. When the bearing unit 100 is working and rotating, the inner ring 103 rotates and moves along with the connected industrial robot, and the inner ring 103 starts to rotate for a long time between the inner ring 103 and the outer ring 101 with the internal rolling component 102, so that a large amount of heat begins to be generated inside the rolling component 102 due to friction, and when the rolling component 102 rotates along with the inner ring 103, the fan plate 2013 on the heat dissipation component 201 also starts to rotate due to the centrifugal force generated by the rotation of the rolling component 102, and during the continuous rotation of the fan plate 2013, the airflow generated inside the rolling component 102 begins to be disturbed, and at the same time, the fan plate 2013 The disturbed high-temperature airflow is squeezed to both sides, and the high-temperature airflow generated by the rolling component 102 is squeezed between the sealing component 301 and the heat dissipation component 201, and then the high-temperature airflow in the heat dissipation component 201 is squeezed and discharged through the sealing component 301, so as to enhance the heat dissipation effect inside the rolling component 102. At the same time, the dustproof component 302 assists in heat dissipation. Under the restriction of the S-shaped vent of the dustproof component 302, the high-temperature gas can be directly transported out, but the external dust and dust cannot enter the interior of the rolling component 102, thereby ensuring the smoothness of rotation inside the rolling component 102. The heat dissipation component 201 can also absorb and conduct the heat inside the rolling component 102, and transport the heat to the outside and cooperate with the sealing component 301 for double-layer heat dissipation, so as to achieve heat dissipation without the need for external cooling equipment and without hindering the rotation of the bearing. It effectively solves the problems of poor natural heat dissipation effect and complex liquid cooling system, and improves the service life and working performance of the bearing.

[0030] During use, when the bearing unit 100 rotates, the inner ring 103 rotates and moves along with the connected industrial robot, and the inner ring 103 starts to rotate for a long time between the inner ring 103 and the outer ring 101 with the internal rolling assembly 102, so that a large amount of heat begins to be generated inside the rolling assembly 102 due to friction, and in the process of the rolling assembly 102 rotating along with the inner ring 103, the fan plate 2013 on the heat dissipation assembly 201 also starts to rotate due to the centrifugal force generated by the rotation of the rolling assembly 102, and in the continuous rotation of the fan plate 2013, the airflow generated inside the rolling assembly 102 begins to be disturbed, and the disturbed high-temperature airflow is squeezed to both sides, and the high-temperature airflow generated by the rolling assembly 102 is squeezed to the sealing assembly 301 and the heat dissipation assembly 20 1, and then the high-temperature airflow in the heat dissipation component 201 is squeezed and discharged through the sealing component 301, so as to enhance the heat dissipation effect inside the rolling component 102, and at the same time the dustproof component 302 assists in heat dissipation. Under the restriction of the S-shaped vent of the dustproof component 302, the high-temperature gas can be directly transported out, but the external dust and dirt cannot enter the interior of the rolling component 102, thereby ensuring the smoothness of rotation inside the rolling component 102, and the heat dissipation component 201 can also absorb and conduct the heat inside the rolling component 102, and transport the heat to the outside and cooperate with the sealing component 301 for double-layer heat dissipation, so as to achieve heat dissipation without the need for external cooling equipment, without hindering the rotation of the bearing, and effectively solving the problems of poor natural heat dissipation effect and complex liquid cooling system, thereby improving the service life and working performance of the bearing.

[0031] Example 2, reference Figure 1 - Figure 6, which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the rolling assembly 102 includes a rolling ball 1022 rotatably arranged on the outer diameter of the inner ring 103, and a rolling ring 1021 arranged on the outer diameter of the rolling ball 1022, and the rolling ring 1021 is rotatably connected to the outer ring 101, and the heat dissipation assembly 201 includes a heat-conducting rod 2011 arranged on the rolling ring 1021, a rotating sleeve 2012 rotatably arranged on the heat-conducting rod 2011, and a fan plate 2013 arranged on the outer diameter of the rotating sleeve 2012, and the fan plate 2013 cooperates with the rolling ring 1021, and the heat-conducting rod 2011 A heat conducting ring 2014 is arranged at one end, a heat conducting partition 2015 is arranged on the inner diameter of the heat conducting ring 2014, a heat conducting ring 2016 is arranged at the bottom of the heat conducting partition 2015, and the heat conducting ring 2016 is rotatably connected with the inner ring 103. When the bearing unit 100 rotates, the inner ring 103 rotates and moves along with the connected industrial robot, and the inner ring 103 rotates with the internal rolling ball 1022. At the same time, the rolling ring 1021 on the outer diameter of the rolling ball 1022 also rotates along with the rolling ball 1022. During the rotation of the rolling ring 1021, the heat conducting rod 2011 and the heat conducting rod 2011 on the outer diameter are rotated. The rotating sleeve 2012 and the fan plate 2013 are driven by the centrifugal force generated by the rolling ring 1021 under the rotation of the rolling balls 1022 and the rolling ring 1021, and the rotating sleeve 2012 starts to rotate with the fan plate 2013 inside the inner ring 103 and the outer ring 101. When the fan plate 2013 rotates, the high-temperature airflow generated by the friction of the rolling balls 1022 between the inner ring 103 and the outer ring 101 is disturbed. At the same time, the fan plate 2013 squeezes the disturbed airflow to the two sides of the rolling ring 1021, thereby squeezing the high-temperature airflow generated by the rolling balls 1022 through the heat conduction partition 2 015 is transported to the sealing component 301, and with the cooperation of the sealing component 301, the high-temperature airflow begins to be transported to the outside, thereby performing the main heat dissipation treatment. At the same time, the heat-conducting ring 2014 can also absorb the heat generated by the rolling ball 1022, and then transfer it to the inside of the heat-conducting partition 2015 and the heat-conducting ring 2016, and the heat-conducting ring 2016 is connected to the outer inner ring 103, so that the heat is transported to the outside through the heat-conducting ring 2016 for secondary heat dissipation treatment. The cooperation of the heat-conducting ring 2016 and the fan plate 2013 can effectively dissipate the heat generated by the friction of the rolling ball 1022.

[0032] During use, when the bearing unit 100 is working and rotating, the inner ring 103 rotates and moves with the connected industrial robot, and the inner ring 103 rotates with the internal rolling ball 1022, and the rolling ring 1021 on the outer diameter of the rolling ball 1022 also rotates with the rolling ball 1022. During the rotation of the rolling ring 1021, the heat conducting rod 2011 and the rotating sleeve 2012 and the fan plate 2013 on the outer diameter of the heat conducting rod 2011 are driven by the centrifugal force generated by the rolling ring 1021, and the rotating sleeve 2012 begins to rotate with the fan plate 2013 inside the inner ring 103 and the outer ring 101, and while the fan plate 2013 rotates, the friction between the inner ring 103 and the outer ring 101 caused by the rolling ball 1022 is The high-temperature airflow generated by the rolling ball 1022 is disturbed, and the fan plate 2013 squeezes the disturbed airflow to the two sides of the rolling ring 1021, thereby squeezing the high-temperature airflow generated by the rolling ball 1022 and transporting it to the sealing component 301 through the heat-conducting partition 2015, and with the cooperation of the sealing component 301, the high-temperature airflow begins to be transported to the outside, thereby performing the main heat dissipation treatment, and at the same time, the heat-conducting ring 2014 can also absorb the heat generated by the rolling ball 1022, and then transfer it to the inside of the heat-conducting partition 2015 and the heat-conducting ring 2016, and the heat-conducting ring 2016 is connected to the outer inner ring 103, so that the heat is transported to the outside through the heat-conducting ring 2016 for secondary heat dissipation treatment, and the heat generated by the friction of the rolling ball 1022 can be effectively dissipated through the cooperation of the heat-conducting ring 2016 and the fan plate 2013.

[0033] The remaining structures are the same as those of Example 1.

[0034] Example 3, reference Figure 1 - Figure 8, which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: the sealing assembly 301 includes a sealing ring 3011 disposed on the outer diameter of the heat-conducting ring 2016, a sealing gasket 1 3013 disposed inside the sealing ring 3011, and a sealing gasket 2 3014 disposed inside the sealing ring 3011, and the sealing gasket 2 3014 cooperates with the heat-conducting ring 2016, and the sealing ring 3011 is provided with a vent 3012 inside, and the vent 3012 is connected to the dustproof assembly 302, when the bearing unit 100 is working and rotating, the rolling assembly 1 inside thereof 02 is also particularly important for dust prevention. When the heat dissipation component 201 effectively dissipates heat to the outside, the vents 3012 on the sealing ring 3011 cooperate with the heat dissipation of the heat dissipation component 201 to ensure that the heat dissipation component 201 can transfer heat to the outside. At the same time, the sealing gasket 1 3013 and the sealing gasket 2 3014 inside the sealing ring 3011 also seal and protect the internal heat dissipation component 201 and the rolling component 102, effectively preventing external dust from entering the inner ring 103 and the outer ring 101, causing the rolling component 102 to be affected during rotation, thereby causing damage.

[0035] Compared with the second embodiment, the dustproof component 302 further comprises an isolation member 3021 arranged at one end of the sealing ring 3011, a baffle plate 3022 arranged inside the isolation member 3021, and an inner plate 3024 arranged inside the isolation member 3021, a ventilation groove 1 3023 is arranged inside the baffle plate 3022, and the ventilation groove 1 3023 cooperates with the vent 3012, a ventilation groove 2 3025 is arranged at the bottom of the inner plate 3024, and the ventilation groove 2 3025 cooperates with the ventilation groove 1 3023, the ventilation groove 1 3023 on the surface of the baffle plate 3022 inside the isolation member 3021 cooperates with the ventilation groove 2 3025 on the surface of the inner plate 3024, The air flow is discharged in an S shape. When the heat dissipation component 201 dissipates heat to the outside, the high-temperature gas is transported to the inside of the isolation member 3021 through the ventilation groove 2 3025 on the inner plate 3024, then moves upward, passes through the ventilation groove 1 3023 on the blocking plate 3022 again, and is finally discharged through the vent 3012 on the sealing ring 3011. When the high-temperature gas passes through the ventilation groove 2 3025 and the ventilation groove 1 3023, an S-shaped route is formed, which can effectively discharge the gas. At the same time, the external dust and dirt will fall into the interior of the isolation member 3021 when passing through the interior of the isolation member 3021, so that the dust and dirt cannot fall into the interior of the rolling component 102.

[0036] During use, when the bearing unit 100 is working and rotating, it is also particularly important to prevent dust from the rolling assembly 102 inside it. When the heat dissipation assembly 201 effectively dissipates heat to the outside, the vent 3012 on the sealing ring 3011 cooperates with the heat dissipation of the heat dissipation assembly 201 to ensure that the heat dissipation assembly 201 can transfer heat to the outside. At the same time, the sealing gasket 1 3013 and the sealing gasket 2 3014 inside the sealing ring 3011 also seal and protect the internal heat dissipation assembly 201 and the rolling assembly 102, effectively preventing external dust from entering the inner ring 103 and the outer ring 101, causing the rolling assembly 102 to be affected during rotation, thereby causing damage. When the heat dissipation assembly 201 dissipates heat to the outside, the high-temperature gas is transported to the isolation member 3021 through the ventilation slot 2 3025 on the inner plate 3024. , and then moves upward, passes through ventilation slot 1 3023 on baffle plate 3022 again, and is finally discharged through vent 3012 on sealing ring 3011, so that high temperature gas forms an S-shaped route when passing through ventilation slot 2 3025 and ventilation slot 1 3023, which can effectively discharge the gas. At the same time, external dust and dirt will fall into the interior of isolation member 3021 when passing through the interior of isolation member 3021, so that dust and dirt cannot fall into the interior of rolling assembly 102. The maze design of dustproof assembly 302 not only prevents dust from entering, but also guides the warm airflow to be discharged through the vent, so as to achieve heat dissipation without external cooling equipment and without hindering the rotation of bearings. It effectively solves the problems of poor natural heat dissipation effect and complex liquid cooling system, improves the service life and working performance of bearings, and reduces maintenance costs and failure risks.

[0037] The remaining structure is the same as that of Example 2.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A thin-walled angular contact ball bearing for industrial robots, characterized in that: include: A bearing unit (100) comprises an outer ring (101), a rolling assembly (102) arranged inside the outer ring (101), and an inner ring (103) arranged at the bottom of the rolling assembly (102); The heat dissipation unit (200) comprises a heat dissipation component (201) arranged on a rolling component (102), and a ventilation and dust prevention unit (300) comprises a sealing component (301) arranged on the heat dissipation component (201), and a dust prevention component (302) arranged on the sealing component (301), wherein the sealing component (301) is connected to the inner ring (103).

2. The thin-walled angular contact ball bearing for industrial robots according to claim 1, characterized in that: The rolling assembly (102) comprises a rolling ball (1022) rotatably arranged on the outer diameter of the inner ring (103), and a rolling ring (1021) arranged on the outer diameter of the rolling ball (1022), wherein the rolling ring (1021) is rotatably connected to the outer ring (101).

3. The thin-walled angular contact ball bearing for industrial robots according to claim 2, characterized in that: The heat dissipation component (201) comprises a heat-conducting rod (2011) arranged on a rolling ring (1021), a rotating sleeve (2012) rotatably arranged on the heat-conducting rod (2011), and a fan plate (2013) arranged on the outer diameter of the rotating sleeve (2012), wherein the fan plate (2013) cooperates with the rolling ring (1021).

4. The thin-walled angular contact ball bearing for industrial robots according to claim 3, characterized in that: A heat-conducting ring (2014) is provided at one end of the heat-conducting rod (2011), a heat-conducting column (2015) is provided on the inner diameter of the heat-conducting ring (2014), a heat-conducting ring (2016) is provided at the bottom of the heat-conducting column (2015), and the heat-conducting ring (2016) is rotatably connected to the inner ring (103).

5. The thin-walled angular contact ball bearing for industrial robots according to claim 4, characterized in that: The sealing assembly (301) comprises a sealing ring (3011) arranged on the outer diameter of a heat-conducting ring (2016), a sealing gasket 1 (3013) arranged inside the sealing ring (3011), and a sealing gasket 2 (3014) arranged inside the sealing ring (3011), wherein the sealing gasket 2 (3014) cooperates with the heat-conducting ring (2016).

6. The thin-walled angular contact ball bearing for industrial robots according to claim 5, characterized in that: A vent (3012) is provided inside the sealing ring (3011), and the vent (3012) is connected to the dustproof component (302).

7. The thin-walled angular contact ball bearing for industrial robots according to claim 6, characterized in that: The dustproof component (302) comprises an isolation piece (3021) arranged at one end of the sealing ring (3011), a blocking plate (3022) arranged inside the isolation piece (3021), and an inner plate (3024) arranged inside the isolation piece (3021).

8. The thin-walled angular contact ball bearing for industrial robots according to claim 7, characterized in that: A ventilation slot one (3023) is provided inside the blocking plate (3022), and the ventilation slot one (3023) cooperates with the ventilation opening (3012).

9. The thin-walled angular contact ball bearing for industrial robots according to claim 8, characterized in that: A second ventilation slot (3025) is provided at the bottom of the inner plate (3024), and the second ventilation slot (3025) cooperates with the first ventilation slot (3023).

10. The thin-walled angular contact ball bearing for industrial robots according to claim 9, characterized in that: The ventilation groove 1 (3023) on the surface of the blocking plate (3022) inside the isolation member (3021) cooperates with the ventilation groove 2 (3025) on the surface of the inner plate (3024) to discharge the airflow in an S shape.

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