Connecting shaft type ball bearing assembling device

Abstract

According to the connecting shaft type ball bearing assembling device, a ball bearing device of the connecting shaft type ball bearing comprises a table plate, a pneumatic type driving structure is arranged on the upper portion of the table plate, and a positioning disc used for containing a turbocharger is arranged on the lower portion of the table plate; a driving rod of the pneumatic driving structure extends into the lower part of the bedplate; a pressure sensor, a pressing sleeve and a buffer spring are arranged on the driving rod; the buffer spring is used for providing elastic force for the pressing sleeve, and the pressing sleeve is used for pressing a bearing outer ring on the supercharger so as to generate a space for placing a ball and assemble the ball. The invention provides a connecting shaft type ball bearing assembling device which is specially used for assembling balls of a connecting shaft type ball bearing, is convenient to operate by a single person, and can well improve the assembling efficiency, save manpower and time and improve the competitiveness of enterprise products.

Description

Technical Field

[0001] The invention belongs to the technical field of turbocharger assembly devices, and in particular relates to a coupling type ball bearing assembly device. Background Art

[0002] The turbocharger is an important component of the current automobile engine system. It can allow more air to enter the cylinder and mix it with the fuel more fully for combustion, which can significantly increase the engine's power and torque, and also help improve fuel economy and reduce emissions.

[0003] The cantilever turbocharger is a type of turbocharger that has been commercialized. The coupling ball bearing assembly also requires the use of professional tools. It is difficult for one person to operate and has low production efficiency, which needs to be improved.

[0004] Based on the above problems, the present application further designs and improves the turbocharger assembly device. Summary of the invention

[0005] In response to the challenges in the above prior art, the present invention provides a coupling ball bearing assembly device, which is specially used for the assembly of coupling ball bearing balls. It is easy for one person to operate, can greatly improve assembly efficiency, save manpower time, and improve the competitiveness of enterprise products.

[0006] The present invention is solved by the following technical solutions.

[0007] A coupling ball bearing assembly device, the coupling ball bearing device comprises a table, the upper part of the table is provided with a pneumatic drive structure, the lower part of the table is provided with a positioning plate for placing a turbocharger; a drive rod of the pneumatic drive structure extends into the lower part of the table, and a pressure sensor, a clamping sleeve, and a buffer spring are provided on the drive rod; the buffer spring is used to provide elastic force to the clamping sleeve, and the clamping sleeve is used to compress the outer ring of the bearing on the turbocharger so as to create a space for placing the balls and assemble the balls.

[0008] In the coupling ball bearing of the turbocharger, the ball is limited by the limiting structure at both ends. This also means that during the assembly process, the ball needs to overcome the elastic force of the internal spring and generate assembly space before it can be placed. When operated by one person, the ball needs to be placed while the compression spring generates assembly space, which is difficult to operate. If it is operated manually, two people need to cooperate to operate. In this application, through the coupling ball bearing ball assembly device, one person can easily complete the coupling ball bearing assembly, and the production efficiency is effectively improved; when in use, the turbocharger is placed on the positioning plate, the pneumatic drive structure is pressed down, and the outer ring of the bearing is pressed down through the compression sleeve to generate space for the ball and assemble the ball, which is very convenient, and the setting of the pressure sensor can obtain pressure data in real time to avoid the outer ring tilting and lag and continue to press down to cause damage to parts.

[0009] In a preferred embodiment, a coupling-type ball bearing ball device is provided with a guide sleeve with a flared structure, and the guide sleeve is arranged below the clamping sleeve, so that the clamping sleeve can be moved downward and pressed on the outer ring of the bearing, thereby playing a good guiding function. In addition, the guide sleeve seals the air inlet passage of the compressor casing to prevent the balls from falling into the compressor impeller due to operating errors, avoids disassembly of the compressor casing to clean the balls, reduces repeated disassembly and reduces workload (the disassembly of the compressor casing of the supercharger with this structure requires the disassembly of the outer ring of the assembled coupling bearing; the balls that have fallen into the impeller can be removed only after the compressor casing is disassembled).

[0010] In a preferred embodiment, in a coupling-type ball bearing device, the pneumatic drive structure includes a cylinder body, a center rod is provided in the cylinder body, and a limit nut is provided on the center rod; the cylinder body is provided with a first air pipe and a second air pipe, and a matching throttle valve, and a reversing valve for controlling the direction of airflow. When in use, the reversing valve is used to conveniently control the lifting and lowering of the center rod, and the throttle valve is used to control the movement speed of the center rod.

[0011] In a preferred embodiment, a pressure display is provided on the table, and the pressure display signal is connected to the pressure sensor, which can display pressure data in real time to avoid the phenomenon of excessive downward pressure and continuous pressure after the parts are stuck.

[0012] In a preferred embodiment, an opening for inserting the balls is provided on the outer wall of the compression sleeve.

[0013] Compared with the prior art, the present invention has the following beneficial effects: it provides a coupling ball bearing assembly device, which is specially used for the assembly of coupling ball bearing balls, is easy to operate by one person, can greatly improve assembly efficiency, save manpower time, and improve the competitiveness of enterprise products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a stereoscopic diagram of a turbocharger involved in the present invention.

[0015] Figure 2 It is a cross-sectional view of a turbocharger involved in the present invention.

[0016] Figure 3 for Figure 2 Magnified view of area A.

[0017] Figure 4 It is a schematic diagram of the coupling type ball bearing ball device in the present invention.

[0018] Figure 5 It is a partial enlarged view of the coupling ball bearing device.

[0019] Figure 6 This is a partial enlarged view before the ball is inserted.

[0020] Figure 7 This is a partial enlarged view of the ball insertion process.

[0021] Figure 8 This is a partial cross-sectional view after the ball is placed.

[0022] Fig. 9 It is a three-dimensional view of the compression sleeve in the coupling ball bearing device. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] In the following embodiments, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] Figure 1 FIG. 1 is a perspective view of a turbocharger 100 involved in the invention. Figure 2 As shown in its cross-sectional view, the turbocharger 100 is provided with an adjustable nozzle assembly 110 and a shaft assembly 120. Figure 3 As can be seen from the figure, the shaft system assembly 120 comprises a rotating shaft 21, a bearing outer ring 22, and a steel ball 23 limited therebetween.

[0026] See also Figures 3 to 9The coupling ball bearing assembly device involved in the present application comprises a table 51, the upper part of the table 51 is provided with a pneumatic drive structure, and the lower part of the table 51 is provided with a positioning plate 56 for placing a turbocharger; the driving rod of the pneumatic drive structure extends into the lower part of the table 51, and the driving rod is provided with a pressure sensor 53, a clamping sleeve 54, an assembly flange 58, and a buffer spring 59; the buffer spring 59 is used to provide a buffering elastic force to the clamping sleeve 54, and the clamping sleeve 54 is used to compress the outer ring 22 of the bearing on the turbocharger, so as to create a space for placing the ball 23 and assemble the ball 23. The outer ring 22 of the bearing is provided with a first limiting protrusion 221, and the rotating shaft 21 is provided with a second limiting protrusion 211, and the two together limit the ball 23 therein.

[0027] Specifically, in the coupling ball bearing device, the pneumatic drive structure includes a cylinder body 34, a center rod 41 is provided in the cylinder body 34, and a limit nut 42 is provided on the center rod 41; the cylinder body 34 is provided with a first air pipe 461 and a second air pipe 462, and a matching throttle valve 45 for adjusting air pressure, and a reversing valve 46 for controlling the direction of air flow, and the reversing valve 46 can be used to conveniently control the lifting and lowering of the center rod 41 during use. The platform 51 is provided with a pressure display 44, and the signal of the pressure display 44 is connected to the pressure sensor 53, which can display pressure data to avoid the phenomenon of continuous pressurization and damage to parts after getting stuck.

[0028] In addition, the coupling-type ball bearing device is provided with a guide sleeve 55 with a flared structure, and the guide sleeve 55 is arranged below the clamping sleeve 54, so that the clamping sleeve 54 can be pressed on the bearing outer ring 22 after moving downward, thereby playing a good guiding function; the guide sleeve 55 also completely seals the air inlet passage of the compression shell to prevent the balls from falling into the impeller from the air inlet passage during the ball installation process; the outer wall of the clamping sleeve 54 is provided with an opening 544 for placing the balls 23.

[0029] In the present application, the coupling ball bearing device can be operated by a single person. When in use, the turbocharger is placed on the positioning plate 56, the pneumatic drive structure is pressed down, and the outer ring 22 of the bearing is pressed down through the clamping sleeve 54 to create a space for placing the ball 23 and assemble the ball 23. It is very convenient, and the setting of the pressure sensor 53 can obtain pressure data in real time to avoid damage to parts due to continued pressure after the outer ring is stuck.

[0030] The coupling-type ball bearing device in the present application, when assembling the outer ring of the bearing, the outer ring of the bearing is pushed out by the internal bearing spring in the free state, the gap between the outer ring of the bearing and the rotating shaft is smaller than the ball diameter, and the ball cannot enter the rotating shaft raceway position; the intake pressure is adjusted by adjusting the throttle valve to control the running speed of the cylinder center rod, and the intake direction is adjusted by the manual reversing valve, that is, whether the gas enters the cylinder from pipe 1 or pipe 2 to control the up and down movement of the cylinder center rod; when moving downward, the clamping sleeve moves downward with the cylinder center rod, and the support spring under the bearing outer ring begins to compress under the pressure until the spring is completely compressed. At this time, the gap between the rotating shaft and the outer ring of the bearing is larger than the ball diameter. At this time, the ball is put in from the groove of the clamping sleeve, and the ball enters the rotating shaft raceway. Then the cylinder center rod is lifted, and the bearing outer ring moves upward under the action of the spring. At this time, since the gap between the rotating shaft shoulder and the bearing outer ring is smaller than the ball diameter, the ball is stuck in the rotating shaft raceway and the bearing outer ring raceway, and the assembly is completed to form a complete angular contact ball bearing.

[0031] The specific assembly process is as follows: 1. First, place the guide sleeve in the corresponding position of the compressor housing as a downward positioning and guiding device for the compression sleeve. The guide sleeve completely seals the compressor housing air inlet passage to prevent the balls from accidentally falling during placement and entering the compressor impeller through the air inlet passage and being unable to be taken out, resulting in re-disassembly. Then place the assembled compressor housing and shaft into the positioning plate. 2. Turn the manual reversing valve, and the cylinder starts to move under the action of air pressure. If the cylinder moves too fast, the throttle valve can be adjusted to control the intake pressure, thereby controlling the feed speed of the cylinder center rod; the cylinder center rod drives the parts installed on the rod to move downward until it contacts the outer ring of the bearing. At this time, the cylinder continues to move downward, and the outer ring of the bearing also overcomes the elastic force of the support spring under the action of the compression sleeve and continues to move downward until the spring is completely compressed. 3. In the clamped state, the outer ring of the bearing is offset from the shoulder of the shaft raceway. At this time, the gap between the two parts is enough for the ball to pass through. At this time, the ball is placed in the avoidance groove of the clamping sleeve. Only the gap at the avoidance groove is enough for the ball to pass through. The pressure value acting on the outer ring of the bearing is determined according to the performance parameters of the spring under the outer ring of the bearing. It is usually set to be greater than the spring compression force. The specific value needs to be determined according to the actual performance parameters of the spring. It is necessary to ensure that the spring is compacted without interference and is not damaged.

[0032] 5. The compression sleeve is fixed to the adapter flange by screws, so the compression sleeve can be quickly replaced when it is worn or assembled with other models, and it has high interchangeability; the compression sleeve can slide freely on the adapter flange shaft, so a spring is added. After the compression sleeve fixing screws are tightened, this spring has an elastic effect on the compression sleeve. This elastic force is about 10N greater than the pressure force of the bearing outer ring spring. Therefore, this spring will not deform when the bearing outer ring spring is deformed. When a large sticking force appears, this spring will deform to prevent the bearing outer ring and other parts from being damaged by force.

[0033] 6. The limit nut adjusts the travel range of the cylinder center rod. The limit block is made of POM plastic to prevent the sensor from colliding with the mounting plate and damaging the sensor when the cylinder center rod moves upward.

[0034] The coupling ball bearing device in this application has the following advantages: 1. The single-person quick assembly of the ball of the coupling ball bearing is realized; 2. The feed speed of the cylinder center rod can be adjusted by adjusting the air intake pressure of the control valve to prevent the collision of parts caused by rapid movement and damage; 3. The force acting on the outer ring of the bearing is displayed in real time to avoid excessive force damage to the parts due to tilting and jamming of the outer ring of the bearing during movement; 4. An over-pressure protection device is designed, and a spring is arranged between the sensor and the clamping sleeve. When the pressure is too high, the spring has a certain buffering effect to protect the parts, and the excessive pressure can be understood by observing the deformation of the spring; 5. The high interchangeability of the clamping sleeve can reduce costs; first, the clamping sleeve can be replaced separately after deformation after repeated use, which reduces costs; second, the clamping sleeve can be replaced separately when assembling other types of coupling ball bearings.

[0035] As described above, the present invention provides a coupling ball bearing assembly device, which is specially used for assembling coupling ball bearing balls, is easy to operate by one person, can greatly improve assembly efficiency, save manpower time, and improve the competitiveness of enterprise products.

[0036] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A coupling ball bearing assembly device, characterized in that: The shaft-connected ball bearing device comprises a platform (51), the upper portion of the platform (51) being provided with a pneumatic drive structure, and the lower portion of the platform (51) being provided with a positioning plate (56) for placing a turbocharger; The driving rod of the pneumatic driving structure extends into the lower part of the table (51), and the driving rod is provided with a pressure sensor (53), a compression sleeve (54), and a buffer spring (59); the buffer spring (59) is used to provide elastic force to the compression sleeve (54), and the compression sleeve (54) is used to compress the outer ring (22) of the bearing on the supercharger so as to create a space for placing the ball (23) and assemble the ball (23); The shaft-connected ball bearing device is provided with a guide sleeve (55) having a flared structure, and the guide sleeve (55) is arranged below the pressing sleeve (54) to facilitate the pressing sleeve (54) to press on the bearing outer ring (22) after moving downward.

2. A coupling ball bearing assembly device according to claim 1, characterized in that: In the shaft-connected ball bearing device, the pneumatic drive structure comprises a cylinder body (34), a center rod (41) is provided in the cylinder body (34), and a limit nut (42) is provided on the center rod (41); The cylinder body (34) is provided with a first air pipe (461) and a second air pipe (462), and a matching throttle valve (45), and is also provided with a reversing valve (46) for controlling the direction of airflow.

3. A coupling ball bearing assembly device according to claim 2, characterized in that: A pressure display (44) is provided on the platform (51), and a signal of the pressure display (44) is connected to the pressure sensor (53).

4. A coupling ball bearing assembly device according to claim 3, characterized in that: An opening (544) for receiving the ball (23) is provided on the outer wall of the compression sleeve (54).

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