Automatic ball loading equipment of angular contact ball bearing for robot

Abstract

The utility model relates to the field of bearing machining, and particularly discloses automatic ball loading equipment of an angular contact ball bearing for a robot. The automatic ball loading equipment comprises a ball filling module and a mounting module, the ball filling module comprises a ball extruding die, a ball extruding surface is arranged on one side of the ball extruding die, and a ball conveying channel is formed in the ball extruding die; the mounting module comprises a clamping module and a rotary driving part, the clamping module comprises an upper die, a lower die and a clamping driving part, and a retainer clamping interval is formed between the upper die and the lower die; the clamping module at least has two position states, and in the first position state, the distance between the upper die and the lower die is increased to the filling distance of the retainer; and in the second position state, the distance between the upper die and the lower die is reduced to the clamping distance, and at the moment, the holder clamping interval is located on one side of the ball extrusion surface and is flush with a ball outlet of the ball conveying channel. The automatic ball loading equipment has the advantages of high assembly efficiency and high automation degree.

Description

Technical Field

[0001] The utility model relates to the field of bearing processing, in particular to an automatic ball loading device for angular contact ball bearings for robots. Background Art

[0002] Bearings are crucial components in mechanical equipment. Their primary function is to support rotating parts, bear loads, reduce friction during movement, and ensure rotational accuracy. Angular contact bearings typically consist of an inner ring, an outer ring, rolling elements, and a cage, with the cage used to hold the rolling elements in place.

[0003] The assembly of rolling elements is the core step in bearing assembly processing. For angular contact ball bearings, the assembly of rolling elements and cages is usually completed before leaving the factory. The ball pocket holes of the cage have a certain amount of locking, which can restrain the rolling elements during subsequent packaging and transportation.

[0004] In existing processing practices, the above-mentioned assembly operations are usually completed manually. The installation operation of the rolling body is difficult. The rolling body needs to be aligned with the ball pocket hole one by one, and the rolling body needs to be pressed to break through the lock and enter the ball pocket hole, which results in low assembly efficiency. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide an automatic ball loading device for angular contact ball bearings for robots, which has the advantages of high assembly efficiency and high degree of automation.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an automated ball loading device for angular contact ball bearings for robots, comprising a ball loading module and an installation module, wherein the ball loading module comprises a ball extrusion die, one side of which is provided with a ball extrusion surface; a ball delivery channel is provided in the ball extrusion die, and a ball outlet of the ball delivery channel is provided on the ball extrusion surface;

[0007] The mounting module includes a clamping module and a rotary drive member, the rotary drive member is used to drive the clamping module to rotate; the clamping module includes an upper mold, a lower mold and a clamping drive member, the upper mold and the lower mold are opposed to each other up and down, and a retainer clamping interval is formed between the upper mold and the lower mold; the clamping drive member is used to drive the upper mold and the lower mold to move up and down relative to each other, and the clamping module has at least two position states, in the first position state, the distance between the upper mold and the lower mold is increased to the retainer filling distance; in the second position state, the distance between the upper mold and the lower mold is reduced to the clamping distance, and the retainer clamping interval is now located on the side of the ball squeezing surface and aligned with the ball outlet of the ball delivery channel;

[0008] When the clamping module is in the second position, along the rotation direction of the clamping module, the distance between the edge of the clamping section of the retaining frame and the ball squeezing surface gradually decreases from the ball outlet of the ball delivery channel.

[0009] When performing the ball loading operation, the clamping module first enters the first position state, and the retaining frame is placed in the retaining frame clamping interval. Then the clamping module switches to the second position state, and the upper and lower molds achieve reliable clamping of the retaining frame.

[0010] A specific number of rolling elements are fed into the ball delivery channel. They contact the retainer through the ball outlet. As the retainer rotates, when the retainer's pockets align with the outlet, the rolling elements roll out of the delivery channel. Due to the locking margins in the pockets, the rolling elements can only partially enter the pockets. Driven by the pockets, the rolling elements rotate synchronously with the retainer. As the distance between the edge of the retainer's clamping zone and the ball-extruding surface gradually decreases from the ball outlet of the delivery channel, the pressure exerted by the ball-extruding surface on the rolling elements gradually increases as the rolling elements rotate with the retainer, eventually pushing the rolling elements past the locking margins and into the pockets, completing the loading of a single rolling element.

[0011] As the cage rotates, the ball pocket holes of the cage are aligned with the ball outlets one by one, and the ball loading operation can be completed automatically one by one, which has the advantage of high assembly efficiency.

[0012] Preferably, the projection of the ball-extruding surface on a horizontal plane is an arc, and the retainer clamping section is cylindrical; when the clamping module is in the second position, the retainer clamping section is eccentrically disposed relative to the ball-extruding surface. The eccentricity allows for a set distance between the edge of the retainer clamping section and the ball-extruding surface.

[0013] Preferably, the diameter of the ball outlet of the ball delivery channel is recorded as D; when the clamping module is in the second position, the distance between the edge of the clamping interval of the retainer and the ball outlet of the ball delivery channel is 0.4~0.5D, and the minimum distance between the edge of the clamping interval of the retainer and the ball squeezing surface is 0.15~0.2D.

[0014] The distance between the edge of the retainer's clamping zone and the ball outlet of the ball delivery channel is sufficient to allow the rolling element to partially enter the ball pocket and rotate with the retainer without falling out. The minimum distance between the edge of the retainer's clamping zone and the ball-extruding surface is required to provide sufficient pressure on the rolling element to force it to break through the locking gap.

[0015] Preferably, the upper mold is located on one side of the ball extrusion surface and is rotatably arranged; the lower mold is movably arranged up and down relative to the upper mold, and the clamping drive member is used to drive the lower mold to move up and down and switch between the first position state and the second position state.

[0016] Preferably, the rotary drive member is connected to the upper die and is used to drive the upper die to rotate; the lower die is rotationally movably connected to the clamping drive member.

[0017] Preferably, the lower mold includes a lifting unit and a blocking unit, and the lifting unit is provided with a lifting platform; the blocking unit is annularly arranged on the outside of the lifting platform, and the blocking unit is movably arranged up and down relative to the lifting unit, and an elastic member is provided between the blocking unit and the lifting unit.

[0018] The setting of the enclosure unit can limit the position of the retaining frame, ensuring that the retaining frame is securely positioned during the loading process, while preventing the retaining frame from falling during the rising and clamping process.

[0019] Preferably, the ball extrusion mold is further provided with a ball delivery switch unit, and the ball delivery switch unit is used to control the opening and closing of the ball delivery channel.

[0020] Preferably, it further includes a ball delivery module, which includes a ball storage unit and a ball delivery assembly. The ball delivery assembly includes a ball delivery pipe, one end of which is connected to the ball storage unit, and the other end is connected to the ball delivery channel on the ball extrusion mold.

[0021] The ball feeding module can realize the automatic feeding of rolling elements, further improving the automation level of ball loading operation.

[0022] Preferably, the ball feeding assembly further comprises a ball counter and an indexing drive, wherein the ball counter is arranged between the ball storage unit and the ball feeding pipe; a ball counting channel is provided in the ball counter, and the indexing drive is used to control the connection and disconnection between the ball counting channel and the ball feeding pipe;

[0023] The outlet of the ball storage unit is provided with a ball storage switch unit, which is used to control the opening and closing of the outlet of the ball storage unit; when the ball counting channel is aligned with the ball storage unit, the ball storage switch unit is turned on.

[0024] The ball counter controls the number of rolling bodies delivered to the ball extrusion die each time according to the length of the ball extrusion channel, effectively avoiding insufficient or missed loading and ensuring the reliability of the ball loading operation.

[0025] Preferably, the number of the ball storage units is at least two, and the ball delivery module further comprises a ball selection drive unit, which is used to drive the ball delivery assembly to move so that the ball counter corresponds to one of the ball storage units.

[0026] Different ball storage units can be used to store rolling elements of different specifications and can be selected according to the specifications of the cage, inner ring and outer ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of the automated ball loading equipment for angular contact ball bearings for robots according to this embodiment, wherein the clamping module is in the first position;

[0028] Figure 2This is a schematic structural diagram of the automated ball loading equipment for angular contact ball bearings for robots according to this embodiment, wherein the clamping module is in the second position;

[0029] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0030] Figure 4 This is a schematic structural diagram of the cooperation between the ball extrusion die and the cage in the automated ball loading equipment for angular contact ball bearings for robots in this embodiment;

[0031] Figure 5 This is a schematic structural diagram of a ball extrusion die in the automated ball loading equipment for angular contact ball bearings for robots in this embodiment;

[0032] Figure 6 This is a schematic diagram of the forward structure of the ball feeding module in the automated ball loading equipment for angular contact ball bearings for robots in this embodiment;

[0033] Figure 7 This is a schematic diagram of the side structure of the ball feeding module in the automated ball loading equipment for angular contact ball bearings for robots in this embodiment, where the ball counting channel is aligned with the ball storage unit;

[0034] Figure 8 This is a schematic diagram of the side structure of the ball feeding module in the automated ball loading equipment for angular contact ball bearings for robots in this embodiment, where the ball counting channel is aligned with the ball feeding pipe. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example

[0036] like Figure 1-Figure 5 As shown, an automated ball loading device for angular contact ball bearings for robots includes a ball loading module and an installation module. The ball loading module includes a ball extrusion die 8, one side of which is provided with a ball extrusion surface 82. A ball delivery channel 81 is provided within the die 8, and the ball outlet of the ball delivery channel 81 is provided on the ball extrusion surface 82. The die 8 is also provided with a ball delivery switch unit 1, which is used to control the opening and closing of the ball delivery channel 81.

[0037] like Figure 1-Figure 5As shown, the mounting module includes a clamping module and a rotary drive 2, wherein the rotary drive 2 is used to drive the clamping module to rotate. The clamping module includes an upper die 3, a lower die 10, and a clamping drive 6. The upper die 3 and the lower die 10 are opposed to each other, and a retainer clamping interval is formed between the upper die 3 and the lower die 10. The range of the retainer clamping interval should be understood as the space defined by the edge of the retainer 4 after the retainer is clamped. The edge position of the retainer clamping interval should be the position of the outer edge of the retainer after the retainer is clamped.

[0038] like Figure 1-Figure 5 As shown, the clamping drive 6 is used to drive the upper mold 3 and the lower mold 10 to move vertically relative to each other. The clamping module has at least two positions. In the first position, the distance between the upper mold 3 and the lower mold 10 is increased to the cage filling distance. In the second position, the distance between the upper mold 3 and the lower mold 10 is reduced to the clamping distance. At this time, the cage clamping area is located on the side of the ball squeezing surface 82 and aligned with the ball outlet of the ball delivery channel 81.

[0039] Specifically, such as Figure 1-Figure 5 As shown, the upper die 3 is positioned on one side of the ball extrusion surface 82 and is rotatably mounted. The lower die 10 is movably mounted relative to the upper die 3. The clamping drive 6 is used to drive the lower die 10 up and down and switch between a first position and a second position. The rotary drive 2 is connected to the upper die 3 and is used to drive the upper die 3 in rotation. The lower die 10 is rotatably mounted to the clamping drive 6.

[0040] Further, such as Figure 1 and Figure 2 As shown, the lower mold 10 includes a lifting unit 7 and a retaining unit 5. The lifting unit 7 is provided with a lifting platform. The retaining unit 5 is annularly arranged outside the lifting platform and is movable up and down relative to the lifting unit 7. An elastic member is provided between the retaining unit 5 and the lifting unit 7. The retaining unit 5 can limit the position of the retaining frame, ensuring that the retaining frame is securely positioned during the loading process and preventing the retaining frame from falling during the lifting and clamping process.

[0041] When the clamping module is in its second position, the distance between the edge of the retainer's clamping zone and the ball-extruding surface 82 gradually decreases from the ball outlet of the ball delivery channel 81 along the clamping module's rotational direction. Specifically, the projection of the ball-extruding surface 82 on a horizontal plane is an arc, and the retainer's clamping zone is cylindrical. When the clamping module is in its second position, the retainer's clamping zone is eccentric relative to the ball-extruding surface 82. This eccentric setting allows for a precise distance between the edge of the retainer's clamping zone and the ball-extruding surface 82.

[0042] The diameter of the ball outlet of the ball delivery channel 81 is denoted as D. When the clamping module is in the second position, the distance between the edge of the retainer clamping section and the ball outlet of the ball delivery channel 81 is 0.4-0.5D, and the minimum distance between the edge of the retainer clamping section and the ball squeezing surface 82 is 0.15-0.2D. The distance between the edge of the retainer clamping section and the ball outlet of the ball delivery channel 81 is sufficient to allow the rolling element to partially enter the ball pocket and rotate with the retainer without falling. The minimum distance between the edge of the retainer clamping section and the ball squeezing surface 82 is required to provide sufficient pressure on the rolling element to force it to break through the locking amount.

[0043] When performing the ball loading operation, the clamping module first enters the first position state, and the retaining frame 4 is placed in the retaining frame clamping interval. Then the clamping module switches to the second position state, and the upper mold 3 and the lower mold 10 realize reliable clamping of the retaining frame.

[0044] A specific number of rolling elements are fed into the ball delivery channel 81. From the ball outlet, the rolling elements contact the retainer. As the retainer rotates, the retainer's pockets align with the outlet, and the rolling elements roll out of the ball delivery channel 81. Due to the locking margin of the pockets, the rolling elements can only partially enter the pockets. Driven by the pockets, the rolling elements rotate synchronously with the retainer. Because the distance between the edge of the retainer's clamping zone and the ball-extruding surface 82 gradually decreases from the ball outlet of the ball delivery channel 81, the pressure exerted by the ball-extruding surface 82 on the rolling elements gradually increases as the retainer rotates, eventually pushing the rolling elements past the locking margin and into the pockets, completing the loading of a single rolling element.

[0045] As the cage rotates, the ball pocket holes of the cage are aligned with the ball outlets one by one, and the ball loading operation can be completed automatically one by one, which has the advantage of high assembly efficiency.

[0046] Further, such as Figure 6-Figure 8 As shown, the machine also includes a ball feeding module, which includes a ball storage unit 12 and a ball feeding assembly. The ball feeding assembly includes a ball feeding pipe 9, one end of which is connected to the ball storage unit 12 and the other end is connected to the ball delivery channel 81 on the ball extrusion die 8. The ball feeding module can realize the automatic feeding of the rolling body, further improving the degree of automation of the ball loading operation.

[0047] Specifically, such as Figure 6-Figure 8 As shown, the ball feeding assembly further includes a ball counter 11 and an indexing drive 15. The ball counter 11 is positioned between the ball storage unit 12 and the ball feeding conduit 9. The ball counter 11 includes a ball counting channel, and the indexing drive 15 controls the connection between the ball counting channel and the ball feeding conduit 9. The ball counter 11 controls the number of rolling elements delivered to the ball extrusion die 8 at each time by adjusting the length of the ball extrusion channel, effectively preventing under- or missed loading and ensuring reliable ball loading.

[0048] like Figure 6-Figure 8 As shown, the outlet of the ball storage unit 12 is provided with a ball storage switch unit 14, which is used to control the opening and closing of the outlet of the ball storage unit 12. When the ball counting channel is aligned with the ball storage unit 12, the ball storage switch unit 14 is turned on.

[0049] As a specific implementation method, Figure 6-Figure 8 As shown, there are at least two ball storage units 12, and the ball delivery module also includes a ball selection drive unit 13, which is used to drive the ball delivery assembly to move, so that the ball counter 11 corresponds to one of the ball storage units 12. Different ball storage units 12 can be used to store rolling elements of different specifications, and are selected according to the specifications of the cage, inner ring, and outer ring.

[0050] In short, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automated ball loading device for angular contact ball bearings for robots, characterized by: It includes a ball filling module and an installation module. The ball filling module includes a ball squeezing mold, and a ball squeezing surface is provided on one side of the ball squeezing mold; a ball delivery channel is provided in the ball squeezing mold, and the ball outlet of the ball delivery channel is provided on the ball squeezing surface; The mounting module includes a clamping module and a rotary drive member, the rotary drive member is used to drive the clamping module to rotate; the clamping module includes an upper mold, a lower mold and a clamping drive member, the upper mold and the lower mold are opposed to each other up and down, and a retainer clamping interval is formed between the upper mold and the lower mold; the clamping drive member is used to drive the upper mold and the lower mold to move up and down relative to each other, and the clamping module has at least two position states, in the first position state, the distance between the upper mold and the lower mold is increased to the retainer filling distance; in the second position state, the distance between the upper mold and the lower mold is reduced to the clamping distance, and the retainer clamping interval is now located on the side of the ball squeezing surface and aligned with the ball outlet of the ball delivery channel; When the clamping module is in the second position, along the rotation direction of the clamping module, the distance between the edge of the clamping section of the retaining frame and the ball squeezing surface gradually decreases from the ball outlet of the ball delivery channel.

2. The automatic ball loading equipment according to claim 1, characterized in that: The projection of the spherical extrusion surface on the horizontal plane is in an arc shape, and the clamping section of the retainer is arranged in a cylindrical shape; when the clamping module is in the second position, the clamping section of the retainer is arranged eccentrically relative to the spherical extrusion surface.

3. The automated ball loading equipment according to claim 1, characterized in that: The diameter of the ball outlet of the ball delivery channel is recorded as D; when the clamping module is in the second position, the distance between the edge of the clamping interval of the retainer and the ball outlet of the ball delivery channel is 0.4~0.5D, and the minimum distance between the edge of the clamping interval of the retainer and the ball squeezing surface is 0.15~0.2D.

4. The automatic ball loading equipment according to claim 1, characterized in that: The upper die is located on one side of the ball extrusion surface and is rotatably arranged; the lower die is movably arranged up and down relative to the upper die, and the clamping drive member is used to drive the lower die to move up and down and switch between a first position state and a second position state.

5. The automatic ball loading equipment according to claim 4, characterized in that: The rotary driving member is connected to the upper die and is used to drive the upper die to rotate; the lower die is rotatably connected to the clamping driving member.

6. The automated ball loading equipment according to claim 4, characterized in that: The lower mold includes a lifting unit and a blocking unit. The lifting unit is provided with a lifting platform. The blocking unit is arranged in a ring outside the lifting platform. The blocking unit is movably arranged up and down relative to the lifting unit, and an elastic member is provided between the blocking unit and the lifting unit.

7. The automated ball loading equipment according to claim 1, characterized in that: The ball extrusion mold is also provided with a ball delivery switch unit, and the ball delivery switch unit is used to control the opening and closing of the ball delivery channel.

8. The automated ball loading equipment according to any one of claims 1 to 7, characterized in that: It also includes a ball feeding module, which includes a ball storage unit and a ball feeding assembly. The ball feeding assembly includes a ball feeding pipe, one end of which is connected to the ball storage unit, and the other end is connected to the ball delivery channel on the ball extrusion mold.

9. The automatic ball loading equipment according to claim 8, characterized in that: The ball feeding assembly further includes a ball counter and an indexing drive. The ball counter is arranged between the ball storage unit and the ball feeding pipe. A ball counting channel is provided in the ball counter. The indexing drive is used to control the connection between the ball counting channel and the ball feeding pipe. The outlet of the ball storage unit is provided with a ball storage switch unit, which is used to control the opening and closing of the outlet of the ball storage unit; when the ball counting channel is aligned with the ball storage unit, the ball storage switch unit is turned on.

10. The automatic ball loading equipment according to claim 9, characterized in that: The number of the ball storage units is at least two, and the ball delivery module further includes a ball selection drive unit, which is used to drive the ball delivery assembly to move so that the ball counter corresponds to one of the ball storage units.

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