Bearing assembly tool and rotary fitting instrument

Abstract

The utility model discloses a bearing assembly tool, and belongs to the technical field of bearing assembly. Comprising a fixed seat; the crescent seat is arranged on the fixing seat, the center of the crescent seat protrudes upwards to form a positioning boss, and the two sides of the crescent seat are provided with an arc-shaped fixing boss and an arc-shaped groove respectively; and the jacking piece is provided with an arc-shaped jacking boss which can be inserted into the arc-shaped groove in a lifting mode, the arc-shaped fixing boss and the arc-shaped jacking boss define an annular structure, and the bearing inner ring and the bearing outer ring are located on the inner side and the outer side of the annular structure correspondingly. The utility model also discloses a rotary fitting instrument, which comprises a fitting turntable on which the bearing assembly tool is mounted; a first ball feeding mechanism, a first fitting mechanism, a second ball feeding mechanism and a second fitting mechanism. The lower-layer steel balls are sleeved through the first ball discharging mechanism and the first sleeving mechanism, the upper-layer steel balls are sleeved through the second ball discharging mechanism and the second sleeving mechanism, the whole process is carried out in a full-automatic mode, the sleeving efficiency is high, and the quality stability of the sleeved bearing is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing assembly, and in particular relates to a bearing assembly tool and a rotary sleeve fitting instrument. Background Art

[0002] During the bearing assembly process, steel balls need to be injected into the gap between the outer ring and the inner ring of the bearing to complete the assembly. However, the existing double-groove assembly is mainly done manually, which has high labor intensity for operators, low assembly efficiency and poor quality stability of the bearing after assembly. Utility Model Content

[0003] The utility model aims at the above problems existing in the prior art and proposes a bearing assembly tool and a rotary sleeve fitting instrument which can fully automatically complete the bearing sleeve fitting.

[0004] The utility model can be realized through the following technical solutions:

[0005] A bearing assembly tool, comprising:

[0006] Fixed seat;

[0007] A crescent seat, which is arranged on the fixing seat, the center position of the crescent seat protrudes upward to form a positioning boss, and the crescent seat is provided with an upwardly protruding arc-shaped fixing boss and an arc-shaped groove on both sides of the outer circumference of the positioning boss;

[0008] The lifting member has an arc-shaped lifting boss, which is inserted into the arc-shaped groove in a liftable manner, the arc-shaped fixing boss and the arc-shaped lifting boss are combined to form an annular structure, the outer ring of the bearing is sleeved outside the annular structure, and the inner ring of the bearing is located inside the annular structure.

[0009] As a further improvement of the utility model, a first positioning hole is opened at the center of the fixing seat, and a second positioning hole is opened at the center of the positioning boss. The second positioning hole is connected to the first positioning hole and is used to install a positioning guide rod. The inner ring of the bearing is placed on the positioning boss, and the positioning guide rod is inserted into the inner ring.

[0010] As a further improvement of the present invention, the height of the arc-shaped fixing boss is higher than the height of the positioning boss.

[0011] As a further improvement of the utility model, when the lifting member is lifted upward, the height of the arc-shaped lifting boss is higher than the height of the arc-shaped fixed boss;

[0012] When the lifting member is lowered and reset, the height of the arc-shaped lifting boss is lower than the height of the arc-shaped fixing boss.

[0013] A rotary sleeve fitting instrument, comprising:

[0014] The above-mentioned bearing assembly tool;

[0015] A fitting turntable, which is driven to rotate by a motor, and the bearing assembly tooling is provided in multiple numbers and evenly distributed on the fitting turntable;

[0016] A first ball lowering mechanism, a first sleeve closing mechanism, a second ball lowering mechanism and a second sleeve closing mechanism, wherein:

[0017] The first ball lowering mechanism and the first sleeve fitting mechanism are used to install the lower steel balls of the bearing and sleeve the bearing;

[0018] The second ball lowering mechanism and the second sleeve fitting mechanism are used to install the upper steel balls of the bearing and sleeve the bearing.

[0019] As a further improvement of the utility model, a fixing plate is provided on the combined turntable, and the first ball lowering mechanism and the second ball lowering mechanism have the same structure, and both include:

[0020] A supporting base plate mounted on the fixing plate;

[0021] A longitudinal slider module, which is vertically arranged and connected to the supporting base plate;

[0022] A connecting plate connected to the longitudinal slider module;

[0023] a lower ball member mounted on the connecting plate;

[0024] A lower ball cylinder is installed on the connecting plate. The cylinder shaft of the lower ball cylinder is connected with a lower ball push rod. The lower ball push rod is inserted into the lower ball part and is used to push the steel ball to fall.

[0025] As a further improvement of the utility model, the bottom of the lower ball piece has a lower ball head, which is inserted into the gap between the outer ring and the inner ring of the bearing, and the lower ball piece has a vertically opened ball pushing channel and an inclinedly opened ball entry channel, wherein:

[0026] The ball entry channel is used to be connected to the ball storage mechanism, and the steel balls in the ball storage mechanism are transported to the ball entry channel through a hose;

[0027] The bottom end of the ball entry channel is connected with the ball pushing channel, the lower ball push rod is inserted in the ball pushing channel, the ball pushing channel is connected with the lower ball head, the steel ball enters the ball pushing channel from the ball entry channel, and is pushed into the gap between the outer ring and the inner ring of the bearing along the lower ball head by the lower ball push rod.

[0028] As a further improvement of the utility model, the first sleeve-closing mechanism is composed of a first deflection-pushing assembly and a first ball-pressing assembly, wherein:

[0029] The first deflection pushing assembly is composed of a deflection pushing block, a slider rail module and a deflection pushing cylinder, and the deflection pushing cylinder drives the deflection pushing block to move to push the outer ring of the bearing and cause it to displace;

[0030] The first pressure ball assembly is composed of a pressure head, a slide rail and slider module, and a pressure head cylinder;

[0031] When the lower layer of steel balls is being fitted, the pressure head is driven downward by the pressure head cylinder to press the accumulated steel balls downward until they are spread out and distributed around. After the accumulated steel balls are spread out and distributed around, the pressure head, the push block, and the arc-shaped lifting boss are reset in sequence to complete the fitting of the lower layer of steel balls.

[0032] As a further improvement of the utility model, the second sleeve-fitting mechanism is composed of a second ball-pressing assembly, a second deflection-pushing assembly, and an inner ring positioning assembly, wherein:

[0033] The structures of the second pressure ball assembly and the second deflection pushing assembly are the same as those of the first pressure ball assembly and the second deflection pushing assembly, and the second pressure ball assembly and the second deflection pushing assembly are installed on the same horizontally arranged slide rail slider module;

[0034] The inner ring positioning assembly is provided with a push rod on the basis of the second push-off assembly, and the push rod is connected to the push block of the inner ring positioning assembly and is used to push forward until it abuts against the inner ring of the bearing;

[0035] When the upper steel balls are being put together, the second pushing-off assembly, the inner ring positioning assembly, and the inner ring positioning assembly act simultaneously, the second ball lowering assembly first puts the balls down, and then the second ball pressing assembly presses the balls. When the steel balls are spread out to the surroundings, the second ball pressing assembly, the second pushing-off assembly, and the inner ring positioning assembly are reset to complete the putting together of the upper steel balls.

[0036] As a further improvement of the utility model, an outer ring positioning assembly is also included, which includes:

[0037] A fixed base, which is installed at the bottom of the fixed plate;

[0038] A pushing cylinder connected to the fixed base;

[0039] The push plate and the outer ring baffle are both connected to the pushing cylinder. Before the ball is lowered, the push plate and the outer ring baffle are pushed by the cylinder until they abut against the outer ring of the bearing.

[0040] Compared with the prior art, the utility model has the following beneficial effects:

[0041] 1. The lower steel balls are placed and sleeved by the first ball placing mechanism and the first sleeve sleeving mechanism, and the upper steel balls are placed and sleeved by the second ball placing mechanism and the second sleeve sleeving mechanism. The whole process is fully automated, with high sleeving efficiency and strong stability of bearing quality after sleeving, which reduces unnecessary pauses and manual intervention, not only improving production efficiency, but also reducing errors introduced by manual operation, which is the embodiment of modern intelligent manufacturing concepts;

[0042] 2. When the lower steel ball is being fitted, after the first ball-feeding mechanism injects the steel ball into the bearing, the turntable rotates to the first fitting station, and then the pressure head presses down vertically from the top of the arc-shaped fixed boss, so that the steel balls are dispersed around, and then the pushing block is driven by the pushing cylinder to move to push the outer ring of the bearing and cause it to displace, and the steel ball is squeezed to the side where the arc-shaped lifting boss is located, and the arc-shaped lifting boss is lifted upward, and the steel ball is smoothly pressed into the lower groove, completing the automatic fitting of the lower steel ball;

[0043] 3. When the upper steel balls are being put together, the second deflection pushing assembly, the inner ring positioning assembly and the inner ring positioning assembly are simultaneously operated, the second ball lowering assembly first puts the balls down, and then the second ball pressing assembly presses the balls. When the steel balls are spread out to the surroundings, the second ball pressing assembly, the second deflection pushing assembly and the inner ring positioning assembly are reset to complete the automatic closing of the upper steel balls.

[0044] 4. After two fittings, the bearing has completed its assembly operation. The turntable rotates it to the unloading station, and the unloading and handling module moves the bearing to the unloading channel to realize the fully automated assembly and unloading of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of the bearing assembly tool of the utility model;

[0046] Figure 2 It is a structural schematic diagram of the bearing assembly tool of the utility model when the inner and outer rings of the bearing are not installed;

[0047] Figure 3 It is a structural schematic diagram of the crescent seat of the utility model;

[0048] Figure 4 It is a structural schematic diagram of the rotary sleeve fitting device of the utility model;

[0049] Figure 5 It is a structural schematic diagram of the first ball lowering mechanism of the utility model;

[0050] Figure 6 It is a structural schematic diagram of the first ball pressing assembly of the utility model;

[0051] Figure 7 It is a structural schematic diagram of the second ball placing mechanism and the second ball pressing assembly of the utility model;

[0052] Figure 8 It is a structural schematic diagram of the outer ring positioning component of the utility model.

[0053] In the figure, 100, fixed seat; 110, crescent seat; 111, positioning boss; 112, arc-shaped fixed boss; 113, arc-shaped groove; 120, lifting member; 121, arc-shaped lifting boss; 122, lifting cylinder; 130, positioning guide rod;

[0054] 200, assembled turntable; 210, fixed plate;

[0055] 300, first ball lowering mechanism; 310, supporting bottom plate; 320, longitudinal slider module; 330, connecting plate; 340, lower ball member; 341, ball pushing channel; 342, ball entry channel; 350, lower ball cylinder; 360, lower ball push rod; 370, lower ball head; 371, lower ball channel;

[0056] 400, first sleeve closing mechanism; 410, first deflection pushing assembly; 411, deflection pushing block; 412, deflection pushing cylinder; 420, first pressure ball assembly; 421, pressure head; 422, pressure head cylinder;

[0057] 500, second ball placement mechanism;

[0058] 600, second sleeve-fitting mechanism; 610, second ball-pressing assembly; 620, second deflection-pushing assembly; 630, inner ring positioning assembly; 631, push rod; 640, double-station moving plate;

[0059] 700, outer ring positioning assembly; 710, fixed base; 720, pushing cylinder; 730, push plate; 740, outer ring baffle. DETAILED DESCRIPTION

[0060] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical method of the present invention, but the present invention is not limited to these embodiments.

[0061] like Figure 1-8 As shown, the utility model provides a bearing assembly tool, comprising:

[0062] Fixed seat 100;

[0063] A crescent seat 110 is disposed on the fixing seat 100. The center of the crescent seat 110 protrudes upward to form a positioning boss 111. The crescent seat 110 is provided with an upwardly protruding arc-shaped fixing boss 112 and an arc-shaped groove 113 on both sides of the outer circumference of the positioning boss 111;

[0064] A lifting member 120, wherein the lifting member 120 has an arc-shaped lifting boss 121, and the arc-shaped lifting boss 121 is inserted into the arc-shaped groove 113 in a liftable manner through a lifting cylinder 122 connected to the lifting member 120, and the arc-shaped fixed boss 112 and the arc-shaped lifting boss 121 are combined to form an annular structure, the outer ring of the bearing is sleeved outside the annular structure, and the inner ring of the bearing is located inside the annular structure;

[0065] By being surrounded by such an annular structure, the inner ring and the outer ring are constrained during the assembly process, ensuring the stability of the bearing during the subsequent assembly process, thereby improving the assembly accuracy and the quality of the finished product.

[0066] Preferably, a first positioning hole is opened at the center of the fixing seat 100, and a second positioning hole is opened at the center of the positioning boss 111. The second positioning hole is connected to the first positioning hole and is used to install the positioning guide rod 130. The inner ring of the bearing is placed on the positioning boss 111, and the positioning guide rod 130 is inserted into the inner ring, thereby ensuring the axial stability and center alignment of the inner ring.

[0067] Preferably, the height of the arc-shaped fixing boss 112 is higher than that of the positioning boss 111. Such a design facilitates the positioning of the inner and outer rings of the bearing on the one hand, and is used for the subsequent fitting of the upper and lower grooves of the bearing on the other hand.

[0068] Preferably, when the lifting member 120 is lifted upward, the height of the arc-shaped lifting boss 121 is higher than the height of the arc-shaped fixing boss 112;

[0069] When the lifting member 120 is lowered and reset, the height of the arc-shaped lifting boss 121 is lower than the height of the arc-shaped fixed boss 112 , and the subsequent bearing assembly is achieved by lifting and lowering the lifting member 120 .

[0070] A rotary sleeve fitting device is also provided, comprising:

[0071] The above-mentioned bearing assembly tool;

[0072] The assembly turntable 200 is driven by a motor to rotate, and the number of bearing assembly tools is multiple and evenly distributed on the assembly turntable 200;

[0073] The first ball placing mechanism 300, the first sleeve closing mechanism 400, the second ball placing mechanism 500 and the second sleeve closing mechanism 600, wherein:

[0074] The first ball lowering mechanism 300 and the first sleeve fitting mechanism 400 are used to install the lower steel balls of the bearing and sleeve the bearing;

[0075] The second ball lowering mechanism 500 and the second sleeve fitting mechanism 600 are used to install the upper steel balls of the bearing and sleeve the bearing.

[0076] The lower steel balls are placed and fitted by the first ball placing mechanism 300 and the first fitting mechanism 400, and the upper steel balls are placed and fitted by the second ball placing mechanism 500 and the second fitting mechanism 600. The whole process is fully automated, with high fitting efficiency and strong stability of the bearing quality after fitting, which reduces unnecessary pauses and manual intervention, thus improving production efficiency and reducing errors introduced by manual operation. It is a reflection of the concept of modern intelligent manufacturing.

[0077] Preferably, a fixing plate 210 is provided on the combined turntable 200, and the first ball lowering mechanism 300 and the second ball lowering mechanism 500 have the same structure, and both include:

[0078] A supporting base plate 310 mounted on the fixing plate 210;

[0079] A longitudinal slider module 320 , which is vertically arranged and connected to the supporting base plate 310 ;

[0080] A connecting plate 330 connected to the longitudinal slider module 320;

[0081] A lower ball member 340 mounted on the connecting plate 330;

[0082] The lower ball cylinder 350 is installed on the connecting plate 330. The cylinder shaft of the lower ball cylinder 350 is connected to the lower ball push rod 360. The lower ball push rod 360 is inserted into the lower ball part 340 and is used to push the steel ball to fall, so as to avoid the steel ball getting stuck during the falling process and ensure the smoothness and accuracy of the ball lowering process.

[0083] Furthermore, the lower ball member 340 has a vertically opened ball pushing channel 341 and an inclinedly opened ball entering channel 342, wherein:

[0084] The ball entry channel 342 is used to connect with a ball storage mechanism (not shown in the figure), and the steel balls in the ball storage mechanism are transported to the ball entry channel 342 through a hose;

[0085] The bottom end of the ball entry channel 342 is connected to the ball pushing channel 341, the lower ball push rod 360 is inserted in the ball pushing channel 341, the ball pushing channel 341 is connected to the lower ball head 370, the steel ball enters the ball pushing channel 341 from the ball entry channel 342, and is pushed into the gap between the outer ring and the inner ring of the bearing along the lower ball head 370 by the lower ball push rod 360.

[0086] Through the cooperation of the ball entry channel 342 and the ball pushing channel 341, combined with the connection between the hose and the ball storage mechanism, a continuous and automated process from storage to precise delivery of steel balls is realized. Under the action of gravity and the lower ball push rod 631, the steel ball slides from the inclined ball entry channel 342 into the vertical ball pushing channel 341, and is then pushed into the bearing gap by the lower ball push rod 360. This process is fast and reduces damage to the steel ball, thereby ensuring that the steel ball can be accurately filled into the designated position.

[0087] In addition, a lower ball head 370 is provided at the bottom of the lower ball part 340, and a lower ball channel 371 is opened in the lower ball head 370. The lower ball channel 371 and the ball pushing channel 341 are located on the same vertical line. The shape of the lower ball head 370 is set to an arc shape that is compatible with the outer ring of the bearing, and the lower ball head 370 and the top of the arc-shaped fixed boss 112. During the actual ball lowering process, the arc-shaped lifting boss 121 is pushed upward, thereby ensuring that the steel balls all fall on the side where the arc-shaped fixed boss 112 is located, so as to facilitate the subsequent fitting of the lower channel.

[0088] Preferably, the first sleeve-fitting mechanism 400 is composed of a first deflection pushing assembly 410 and a first ball pressing assembly 420, wherein:

[0089] The first deflection pushing assembly 410 is composed of a deflection pushing block 411, a slider rail module and a deflection pushing cylinder 412. The deflection pushing cylinder 412 drives the deflection pushing block 411 to move to push the outer ring of the bearing and cause it to displace.

[0090] The first pressure ball assembly 420 is composed of a pressure head 421, a slide rail and slider module, and a pressure head cylinder 422;

[0091] Specifically, after the first ball placing mechanism 300 injects the steel balls into the bearing, the turntable rotates to the first fitting station, and then the pressure head 421 presses down vertically from the top of the arc-shaped fixed boss 112, so that the steel balls are dispersed to the surroundings, and then the pushing block 411 is driven by the pushing cylinder 412 to move to push the outer ring of the bearing and cause it to displace, and the steel balls are squeezed to the side where the arc-shaped lifting boss 121 is located, and the arc-shaped lifting boss 121 is pushed upward, pressing the steel balls smoothly into the lower channel, completing the fitting operation of the lower steel balls, and then the pushing block 411 and the pressure head 421 are reset, and the turntable rotates to the second ball placing station.

[0092] Preferably, the second sleeve closing mechanism 600 is composed of a second ball pressing assembly 610, a second deflection pushing assembly 620, and an inner ring positioning assembly 630, wherein:

[0093] The structures of the second pressure ball assembly 610 and the second push-off assembly 620 are the same as those of the first pressure ball assembly 420 and the second push-off assembly 620, and the second pressure ball assembly 610 and the second push-off assembly 620 are installed on a double-station moving plate 640, and the double-station moving plate 640 is installed on a slide rail slider module arranged at the same level, and the second pressure ball assembly 610 and the second push-off assembly 620 realize the switching of the station through the slide rail slider assembly;

[0094] The inner ring positioning assembly 630 is additionally provided with a push rod 631 on the basis of the second push-off assembly 620. The push rod 631 is connected to the push block of the inner ring positioning assembly 630 and is used to push forward until it abuts against the inner ring of the bearing.

[0095] When the upper steel balls are being put together, the second pushing and deflecting assembly 620, the inner ring positioning assembly 630, and the inner ring positioning assembly 630 act simultaneously, the second ball lowering assembly first puts the balls down, and then the second ball pressing assembly 610 presses the balls. When the steel balls are spread out to the surroundings, the second ball pressing assembly 610, the second pushing and deflecting assembly 620, and the inner ring positioning assembly 630 are reset to complete the putting together of the upper steel balls.

[0096] The specific assembly process of the upper steel ball is as follows:

[0097] 1. The second pressure ball assembly 610 is located at the top of the bearing, and the deflection block 411, the push rod 631, and the arc-shaped lifting boss 121 act simultaneously, wherein the deflection block 411 acts on the upper end of the outer ring of the bearing and pushes the outer ring of the bearing to deflect in the direction of the arc-shaped lifting boss 121, and the push rod 631 abuts against the inner ring of the bearing. At this time, a gap is formed between the inner ring of the bearing and the outer ring on one side of the arc-shaped lifting boss 121;

[0098] 2. The lower ball head 370 is inserted into the gap between the inner and outer rings of the bearing on one side of the arc-shaped lifting boss 121 and the steel ball is injected;

[0099] 3. The slide rail and slider module moves, and the second push-off assembly 620 is transferred to the top of the bearing. The pressure head 421 is inserted into the gap between the inner and outer rings of the bearing on one side of the arc-shaped lifting boss 121, and the steel ball is pressed into the upper groove of the bearing to complete the fitting operation of the upper steel ball. Then the push-off block 411, the push rod 631, and the arc-shaped lifting boss 121 are reset.

[0100] Preferably, an outer ring positioning assembly 700 is also included, which includes:

[0101] A fixed base 710, which is mounted on the bottom of the fixed plate 210;

[0102] A push cylinder 720 connected to the fixed base 710;

[0103] The push plate 730 and the outer ring baffle 740 are both connected to the push cylinder 720. The first ball placing station and the second ball placing station are both provided with the outer ring positioning assembly 700. Before the ball placing operation is performed, the push plate 730 and the outer ring baffle 740 are used to ensure the position stability of the outer ring of the bearing.

[0104] After two fittings, the bearing has completed its assembly operation. The turntable rotates it to the unloading station, and the unloading and handling module transports the bearing to the unloading channel (not shown in the figure), realizing the fully automated assembly of the bearing.

[0105] The technical means disclosed in the scheme of the utility model are not limited to the technical means disclosed by the above technical means, but also include technical solutions composed of any combination of the above technical features. The above is a specific implementation method of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

[0106] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0107] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0108] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0109] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A bearing assembly tool, characterized in that: include: Fixed seat; A crescent seat, which is arranged on the fixing seat, the center position of the crescent seat protrudes upward to form a positioning boss, and the crescent seat is provided with an upwardly protruding arc-shaped fixing boss and an arc-shaped groove on both sides of the outer circumference of the positioning boss; The lifting member has an arc-shaped lifting boss, which is inserted into the arc-shaped groove in a liftable manner, the arc-shaped fixing boss and the arc-shaped lifting boss are combined to form an annular structure, the outer ring of the bearing is sleeved outside the annular structure, and the inner ring of the bearing is located inside the annular structure.

2. A bearing assembly tool according to claim 1, characterized in that: A first positioning hole is provided at the center of the fixing seat, a second positioning hole is provided at the center of the positioning boss, the second positioning hole is connected to the first positioning hole and is used to install a positioning guide rod, the inner ring of the bearing is placed on the positioning boss, and the positioning guide rod is inserted into the inner ring.

3. A bearing assembly tool according to claim 1, characterized in that: The height of the arc-shaped fixing boss is higher than the height of the positioning boss.

4. A bearing assembly tool according to claim 1, characterized in that: When the lifting member is lifted upward, the height of the arc-shaped lifting boss is higher than the height of the arc-shaped fixing boss; When the lifting member is lowered and reset, the height of the arc-shaped lifting boss is lower than the height of the arc-shaped fixing boss.

5. A rotary sleeve fitting instrument, characterized in that: include: The bearing assembly tool as described in any one of claims 1 to 4 above; A fitting turntable, which is driven to rotate by a motor, and the bearing assembly tooling is provided in multiple numbers and evenly distributed on the fitting turntable; A first ball lowering mechanism, a first sleeve closing mechanism, a second ball lowering mechanism and a second sleeve closing mechanism, wherein: The first ball lowering mechanism and the first sleeve fitting mechanism are used to install the lower steel balls of the bearing and sleeve the bearing; The second ball lowering mechanism and the second sleeve fitting mechanism are used to install the upper steel balls of the bearing and sleeve the bearing.

6. A rotary sleeve fitting apparatus according to claim 5, characterized in that: The combined turntable is provided with a fixed plate, and the first ball lowering mechanism and the second ball lowering mechanism have the same structure, and both include: A supporting base plate mounted on the fixing plate; A longitudinal slider module, which is vertically arranged and connected to the supporting base plate; A connecting plate connected to the longitudinal slider module; a lower ball member mounted on the connecting plate; A lower ball cylinder is installed on the connecting plate. The cylinder shaft of the lower ball cylinder is connected with a lower ball push rod. The lower ball push rod is inserted into the lower ball part and is used to push the steel ball to fall.

7. A rotary sleeve fitting apparatus according to claim 6, characterized in that: The bottom of the lower ball part has a lower ball head, which is inserted into the gap between the outer ring and the inner ring of the bearing, and the lower ball part has a vertically opened ball pushing channel and an inclinedly opened ball entry channel, wherein: The ball entry channel is used to be connected to the ball storage mechanism, and the steel balls in the ball storage mechanism are transported to the ball entry channel through a hose; The bottom end of the ball entry channel is connected with the ball pushing channel, the lower ball push rod is inserted in the ball pushing channel, the ball pushing channel is connected with the lower ball head, the steel ball enters the ball pushing channel from the ball entry channel, and is pushed into the gap between the outer ring and the inner ring of the bearing along the lower ball head by the lower ball push rod.

8. The rotary sleeve fitting apparatus according to claim 5, characterized in that: The first sleeve-closing mechanism is composed of a first deflection pushing assembly and a first ball pressing assembly, wherein: The first deflection pushing assembly is composed of a deflection pushing block, a slider rail module and a deflection pushing cylinder, and the deflection pushing cylinder drives the deflection pushing block to move to push the outer ring of the bearing and cause it to displace; The first pressure ball assembly is composed of a pressure head, a slide rail and slider module, and a pressure head cylinder; When the lower layer of steel balls is being fitted, the pressure head is driven downward by the pressure head cylinder to press the accumulated steel balls downward until they are spread out and distributed around. After the accumulated steel balls are spread out and distributed around, the pressure head, the push block, and the arc-shaped lifting boss are reset in sequence to complete the fitting of the lower layer of steel balls.

9. A rotary sleeve fitting apparatus according to claim 8, characterized in that: The second sleeve-fitting mechanism is composed of a second ball pressing assembly, a second deflection pushing assembly, and an inner ring positioning assembly, wherein: The structures of the second pressure ball assembly and the second deflection pushing assembly are the same as those of the first pressure ball assembly and the second deflection pushing assembly, and the second pressure ball assembly and the second deflection pushing assembly are installed on the same horizontally arranged slide rail slider module; The inner ring positioning assembly is provided with a push rod on the basis of the second push-off assembly, and the push rod is connected to the push block of the inner ring positioning assembly and is used to push forward until it abuts against the inner ring of the bearing; When the upper steel balls are being put together, the second pushing-off assembly, the inner ring positioning assembly, and the inner ring positioning assembly act simultaneously, the second ball lowering mechanism first lowers the ball, and then the second ball pressing assembly presses the ball. When the steel balls are spread out to the surroundings, the second ball pressing assembly, the second pushing-off assembly, and the inner ring positioning assembly are reset to complete the putting together of the upper steel balls.

10. The rotary sleeve fitting device according to claim 6, characterized in that: Also included is an outer ring positioning assembly, which includes: A fixed base, which is installed at the bottom of the fixed plate; A pushing cylinder connected to the fixed base; The push plate and the outer ring baffle are both connected to the pushing cylinder. Before the ball is lowered, the push plate and the outer ring baffle are pushed by the cylinder until they abut against the outer ring of the bearing.

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